Introduction

For millions of travelers who rely on medical devices—from continuous glucose monitors and portable oxygen concentrators to powered wheelchairs—flying can present a daunting set of unknowns. Will the device count as a carry-on? Do I need special clearance? What if the battery dies mid-flight? Delta Air Lines has consistently ranked among the most accommodating U.S. carriers for passengers bringing life-sustaining equipment on board. The airline’s 2025 policy refresh sharpens existing rules around lithium batteries, streamlines the pre-approval process for oxygen concentrators, and reinforces training for frontline staff, so that passengers can move through the airport with fewer surprises.

This guide translates Delta’s official rules into an actionable playbook. You’ll find complete lists of approved devices, exact battery calculations you should make before packing, documentation checklists, and links to essential resources—helping you plan a flight where your health needs are met from the check-in counter to the arrival gate.

Medical Device Carry-On Allowance and General Policy

Delta’s policy is built on a simple principle: if a device is medically necessary, it should never cost you a baggage fee or force you to leave essential items behind. Approved medical equipment travels as an additional carry-on item that does not count against your usual allowance of one carry-on bag and one personal item. You can board with a roller suitcase, a backpack, and a CPAP case without paying extra. There is no fixed limit on the number of separate medical items—a traveler who needs both a portable oxygen concentrator and a feeding pump may carry both, along with their accessories, provided each is genuinely required during the trip or at the destination.

The exemption extends to accessories such as masks, tubing, AC power cords, spare cannulas, and even insulated cooling pouches for medication. If a device is too large for the overhead bin, Delta’s cabin crew will attempt to store it in an on-board closet or, if space permits, in an adjacent unused seat. While this is almost always manageable, giving the gate agent advance notice helps secure a spot, especially on crowded regional jets where closet space is limited.

Importantly, gate-checking a medical device that can be carried in the cabin does not incur a checked-bag fee, and Delta will return a gate-checked manual wheelchair to the jet bridge upon landing so you don’t need to navigate the terminal without it.

Approved Medical Equipment: A Comprehensive List

Delta’s list of permissible devices aligns with Federal Aviation Administration regulations and addresses common chronic conditions. Being clear on whether your specific model qualifies eliminates confusion during TSA screening and at the boarding door.

Respiratory and Oxygen Equipment

  • Portable Oxygen Concentrators (POCs). Only FAA-approved models are authorized for use in the cabin. The 2025 list includes the Inogen One G5, AirSep FreeStyle 5, SeQual Eclipse 5, OxLife Independence, and others. Delta updates its website regularly; if your device is new, verify the model number against the published list at least a week before departure. Registration is mandatory—you must submit an approval form through Delta’s accessibility portal or customer service line at least 48 hours ahead of your first flight.
  • CPAP, BiPAP, and APAP machines. These sleep-therapy devices are welcome in the cabin and may be used during flight on battery power. Although many aircraft offer in-seat power outlets, outlets are not guaranteed to be compatible with medical-grade plugs, nor are they consistently powered during taxi or turbulence. Always bring a charged external battery or a DC adapter with airline-safe connectors. Gel or liquid-filled masks follow the standard liquids exemption when declared.
  • Nebulizers and inhalers. Battery-operated nebulizers can be operated throughout the flight. Metered-dose inhalers and small compressor units present no restrictions; they simply need to be packed so that medication canisters are protected from accidental discharge.

Diabetes Management Devices

  • Insulin pumps and continuous glucose monitors (CGMs). Both can remain on your body continuously, including through metal detectors and body scanners. TSA officers are trained to offer an alternate pat-down rather than require you to disconnect from a pump or sensor. If you prefer an X-ray-free inspection for a manufacturer’s precaution, request a manual check before entering the screening lane.
  • Insulin pens, syringes, and testing kits. These supplies fly free of charge. Insulin vials and pre-filled pens, though liquid, are exempt from the 3.4-ounce container limit when declared at the checkpoint. Small sharps containers are permitted in carry-ons; Delta does not supply disposal units on board, so pack a travel-size container.
  • Glucose tablets, gels, and juice for lows. Medically necessary liquids such as juice boxes or glucose gel packs fall under the same exemption. Keep them in an accessible outer pocket so you can reach them without unpacking overhead bags.

Mobility and Assistive Devices

  • Canes, crutches, walkers, and folding manual wheelchairs. These may be stored in the cabin closet or in overhead bins, or gate-checked at no cost. If you gate-check a manual wheelchair, inform the gate agent that you need it brought to the aircraft door upon arrival—Delta makes this a standard service but a verbal reminder helps.
  • Battery-powered wheelchairs and mobility scooters. These must be checked at the ticket counter or gate. Before handing over a power chair, remove detachable parts like joysticks, headrests, and seat cushions; carry them on board to avoid damage. Delta’s ground crew will disconnect battery terminals and protect them, but travelers with lithium-ion batteries must confirm the watt-hour rating and obtain pre-approval if the battery exceeds 100 Wh.
  • Electric-powered knee scooters. As long as the battery is non-spillable or meets lithium limits, these devices can be gate-checked. The 2025 policy treats them identically to manual mobility aids for stowage purposes.

Other Essential Medical Devices

  • Feeding pumps, dialysis cyclers, and apnea monitors. Carry-on is permitted. If you intend to operate the device in flight, notify the Special Assistance team ahead of time so the crew is briefed. Most of these devices run on battery power; confirm that your batteries meet the watt-hour limits detailed below.
  • Epinephrine auto-injectors (EpiPens). No special approval is required. Keep them accessible—not buried in an overhead bin—and consider carrying two, as international connections may delay replacement.
  • Pulse oximeters, hearing aid chargers, and transcutaneous electrical nerve stimulation (TENS) units. All are treated as medical carry-on items. Hearing aids and their chargers are exempt even from the “electronic device off during takeoff” rule because they are medically essential.

Pre-Flight Approval and Documentation Requirements

Roughly half of all medical device travelers—those using oxygen, ventilators, or large batteries—must secure Delta’s approval before arriving at the airport. The process is designed to catch compatibility issues early, not to create barriers.

Portable Oxygen Concentrators: FAA-Approved Models and Registration

Every POC user must submit a Portable Oxygen Concentrator Approval Form. The form asks for the manufacturer, model number, battery specifications, and a signed physician’s statement confirming your fitness to travel and your liter-flow requirements. Delta’s medical desk cross-references your device against the FAA’s approved list; provided everything matches, the approval is usually confirmed within 24 hours. Carry a printed copy of the approval and the doctor’s letter, as gate agents may request them during boarding.

Devices with High-Capacity Batteries

Any medical device powered by a lithium-ion battery rated between 100 and 160 watt-hours (Wh) requires pre-approval. This category includes some bi‑level ventilators, older portable suction machines, and certain power wheelchair batteries. Call the Special Assistance line at 1-404-209-3434 with the battery label showing the Wh rating. Delta will note the approval in your reservation so that check-in agents are aware. Batteries exceeding 160 Wh are not permitted unless a dangerous goods exemption is issued—a rare path that needs to be initiated weeks in advance.

Submitting Your Request: Step-by-Step

  1. Gather documentation. Have clear photos of the device’s rating label (showing voltage and amp-hours or Wh), the doctor’s letter if respiratory support is involved, and your flight confirmation code.
  2. Use the Accessibility Request Portal. Delta’s online Accessible Travel Services page is the fastest route. Submitting electronically attaches the approval directly to your booking.
  3. Allow at least 48 hours. While same-day accommodations sometimes happen for simple CPAP notes, oxygen and battery approvals need manual review. Aim to submit a full week before travel to account for follow-up questions.
  4. Print confirmation. A paper copy of the approval confirmation and the doctor’s statement becomes a useful backup when airport Wi-Fi is unreliable.

Using Medical Devices During Your Flight

The cabin environment introduces unique constraints. Delta follows FAA guidelines that allow use of approved medical electronics from gate to gate, provided they don't emit radio signals that could interfere with navigation systems.

FAA-Compliant In-Flight Use Rules

FAA-approved POCs, insulin pumps, CGMs, and battery-operated CPAP devices may be used continuously, even during taxi, takeoff, and landing—unless the crew announces a full electronic-device restriction due to low-visibility procedures. Most non-transmitting medical devices fall into this category. The distinction is simple: if it doesn’t use Wi-Fi, Bluetooth, or cellular connectivity, it’s usually fine. For devices that do have wireless features, such as a CGM transmitter or a CPAP with a cellular modem, switch to airplane mode or turn off the radio while keeping the core function active.

Power Source Considerations: Battery vs. In-Seat Power

Delta’s fleet ranges from modern A220s with in-seat AC outlets to older 717s that offer only USB ports. Even when an AC outlet exists, the wattage may be insufficient for a medical device that draws high current. Sudden interruptions in aircraft power—common during generator switching at pushback—can briefly cut electricity, potentially resetting a ventilator or CPAP machine. For these reasons, Delta strongly recommends powering medical devices solely from their own FAA-compliant batteries. A rule of thumb: bring enough battery capacity to cover 150% of the scheduled flight time (including anticipated taxi, holding, and a potential diversion). That way, you’re never dependent on the aircraft’s electrical system.

Restrictions on Compressed Oxygen and Liquid Oxygen

FAA hazardous materials regulations bar both compressed gaseous oxygen cylinders and liquid oxygen canisters from cabin and cargo hold on Delta flights. If your physician prescribes oxygen but you cannot use a portable concentrator, Delta’s medical desk can coordinate with a home oxygen provider at your destination to have approved cylinders waiting for you at the airport. This arrangement must be made well before departure, and you’ll need to provide proof of your oxygen needs.

Battery Safety and Power Requirements (2025 Update)

The 2025 policy places sharper emphasis on battery documentation and safe storage, reflecting the FAA’s heightened concern about lithium-related fire incidents. While the basic limits haven’t changed, enforcement at check-in is now more consistent.

Lithium-Ion Battery Regulations for Carry-On

  • Batteries up to 100 Wh may be carried in unlimited numbers, provided each terminal is protected against short-circuiting. Most CPAP, POC, and nebulizer batteries are safely within this band.
  • Batteries between 100 Wh and 160 Wh require Delta approval and are limited to two spare batteries per passenger. This bracket covers larger ventilator packs and some mobility aid batteries.
  • Batteries above 160 Wh are prohibited without a dangerous goods exemption. Exemptions are rare for personal travel and require weeks of coordination.
  • All spare lithium batteries must travel in carry-on luggage. They cannot be placed in checked baggage under any circumstances.

Calculating Required Battery Life for Your Flight

A common mistake is bringing batteries that barely cover the scheduled block time. Delta’s recommendation: total flight time (gate departure to gate arrival) plus a minimum of three extra hours. For a 6-hour flight, you need at least 9 hours of runtime. If your device draws 40 Wh per hour, that’s 360 Wh total. With two 100 Wh batteries, you’d only have 200 Wh, which falls dangerously short. Do the math using your device’s rated power consumption or consult the manufacturer. Overestimate rather than underestimate, especially on routes prone to airborne holding delays.

Storing and Protecting Spare Batteries

Place loose batteries in original packaging, dedicated plastic cases, or use tape to cover exposed terminals. A battery with bare contacts can spark if a metal object bridges the terminals. Keep spare batteries in your personal item or medical device bag under the seat, not in an overhead bin. Overhead compartments experience shifting and jostling that could damage batteries. Alert a flight attendant immediately if you notice a battery swelling, overheating, or releasing a chemical odor; crew are trained to manage such events with containment bags and cooling protocols.

Transporting, Packing, and Storing Your Devices

How you pack medical equipment directly affects screening speed and onboard safety. A few proactive steps can save you from having bags pulled aside for extra inspection.

Labeling and Security Screening Tips

  • Attach a durable tag with your name, mobile number, and the words “MEDICAL DEVICE” to each piece of equipment. TSA officers recognize these tags and often expedite screening.
  • Remove the device from its carrying case before placing it on the X-ray conveyor. Just as with a laptop, a clear, unobstructed image helps the screener identify the item quickly. Place it in a separate bin if possible.
  • If your device’s manufacturer advises against X-ray exposure (as with some first-generation insulin pumps), inform the TSA officer and request a manual inspection. TSA’s medical conditions page confirms that officers must accommodate such requests.

Carry-On vs. Checked Medical Equipment

Small to mid-size devices—CPAP machines, POCs, nebulizers—must remain in the cabin. Only equipment that exceeds carry-on dimensions, such as full-size manual wheelchairs and mobility scooters, may be checked. If you gate-check a manual wheelchair, ask the gate agent to add a “return to jet bridge” tag so it’s brought to the aircraft door after landing. For powered chairs, remove and carry on joysticks, LCD screens, and head supports; these are the components most often damaged in cargo holds.

Checking Larger Equipment: Wheelchairs, Scooters, and Mobility Aids

Delta transports tens of thousands of mobility devices each month. Knowing the fine print protects your equipment from mishandling and helps you advocate for proper loading.

Manual and Battery-Powered Wheelchair Policies

  • Collapsible manual wheelchairs with non-spillable batteries (gel or absorbed electrolyte) are accepted for gate-checking. Delta does not charge for this service. You may wait on the jet bridge for the chair’s return; simply confirm with the gate agent.
  • Powered wheelchairs using sealed lead-acid, gel, or dry-cell batteries can be transported. At check-in, inform the agent of the battery type. Delta ground staff will disconnect and insulate the terminals for you. If your chair uses a lithium-ion battery, the Wh rating must fall within the 100–160 Wh band for approval; batteries over 160 Wh are not allowed. Always bring the battery’s safety data sheet.
  • Some wide-body aircraft have an on-board closet that can accommodate a folded manual chair. Ask the gate agent early in the boarding process whether space is available; this can save the wear of cargo loading.

International Travel Considerations

Not all overseas airports have the same accessibility infrastructure. When flying internationally, notify Delta’s Special Assistance team about your wheelchair’s dimensions, weight, and battery composition. They will coordinate with the arrival station to ensure an aisle chair is available for deplaning and that local ground staff are briefed on handling your device. Some countries require advance import documentation for mobility aids; check with the destination’s consulate and carry any necessary permits.

Traveling with Medications and Liquid Medical Supplies

Prescription drugs, over-the-counter medications, and medically necessary liquids receive broad leeway at security checkpoints, but preparedness avoids delays.

  • Keep all medications in their original pharmacy-labeled containers with your name, the drug name, and dosage. This meets TSA requirements and simplifies identification during secondary screening.
  • Liquid medications exceeding 3.4 ounces—including cough syrups, saline irrigation solutions, and tube-feeding formulas—may be carried in reasonable quantities. Declare them before screening begins and present them separately from your non-medical liquids.
  • Insulin, EpiPens, and other injectables that require cooling can be packed in an insulated bag with freezer packs or gel packs. Delta does not have refrigerators available for passenger medications on board, so bring enough cooling capacity to last from your departure gate through any potential delays. Freeze packs are subject to the same liquids exemption; if they are partially melted, TSA will allow them as long as they are clearly to keep medications cool.
  • Carry a letter from your prescribing physician, especially on international trips. Some nations have strict narcotics laws, and a doctor’s note can prevent customs misunderstandings. Include a list of generic drug names, as brand names may differ abroad.
  • Sharps containers: pack a small, puncture-proof container for used syringes and lancets. TSA permits these in carry-on luggage; Delta does not supply on-board sharps disposal.

A single itinerary with two short flights can present the biggest challenge: what happens if you or your checked mobility device don’t make the connection? Delta’s Special Assistance team can build an extra buffer into your itinerary upon request. When booking over the phone at 1-404-209-3434, ask the agent to apply a “medical connect time”—a longer minimum layover that gives you and the ground crew more time to transfer a wheelchair or scooter. If a tight connection is unavoidable, let the gate agent at your first departure know; they can radio ahead to have an aisle chair and assistance ready at the arrival gate.

For carry-on medical devices, treat connecting flights as a continuous power challenge. If your total travel time (including any unplanned holds) spans eight hours, your batteries must be sized accordingly. Never assume you can charge batteries during a short layover; gate outlet availability is unpredictable.

How to Request Special Assistance from Delta

Delta’s Special Assistance team can arrange wheelchair services, pre-boarding, golf carts for long concourses, and escorts between gates. Reaching out at least 48 hours before your first flight allows the team to place the required codes in your reservation.

Phone: 1-404-209-3434 (available daily, 7 a.m. to 10 p.m. Eastern Time)
Online: Visit the Accessible Travel Services portal to request a wheelchair, register a POC, and notify Delta about service animals in a single session.

At the airport, check in with the gate agent upon arrival, re-confirm that your medical device notation is visible on the reservation, and ask about the boarding sequence. Delta typically invites passengers requiring extra time to board first, giving you a quiet cabin to position equipment and settle in. If you need help lifting a device into an overhead bin, crew members are permitted to assist, but policies vary; a travel companion is the safest bet.

Why Delta’s Medical Device Policy Stands Out in 2025

Several U.S. carriers have tightened medical device rules in recent years—introducing dimensional limits on CPAP bags, restricting POC models, or adding fees for gate-checked wheelchairs. Delta continues to take a more passenger-friendly stance in ways that materially ease the journey.

  • No surcharges for medical cabin luggage. Devices fly completely free, and there are no rigid size or weight restrictions as long as the item can be safely stowed. A CPAP bag, a POC case, and a small cooler for insulin all ride without charge alongside your standard carry-on.
  • Pre-cleared device database. Once a POC or ventilator is approved for your profile, Delta retains the records for future trips. You may only need to re-verify the doctor’s note annually, cutting down repeat paperwork.
  • Flight crew training. Delta’s customer-facing staff receive recurrent training on handling medical devices, including where to stow equipment and how to interpret battery labels. This reduces the chance that a crew member will mistakenly ask you to check a device that should stay in the cabin.
  • Partnership with TSA Cares. Delta actively encourages travelers to use the TSA Cares helpline (1-855-787-2227) for tailored, sensitive screening assistance. TSA Cares can assign a passenger support specialist to meet you at the checkpoint, a service that works hand-in-glove with Delta’s pre-boarding procedures.

These practices make Delta a carrier of choice for passengers who cannot compromise on medical safety while flying.

What to Do If Your Device Is Lost or Damaged

Despite careful handling, damage to mobility equipment occurs occasionally. If you discover damage to a checked wheelchair or scooter, do not leave the airport. Go directly to the Delta baggage service office, located in the baggage claim area, and file a claim before you exit the secure zone. Photograph the damage with a timestamp. Delta’s policy prioritizes repairs: they may arrange on-the-spot rental of a temporary chair while your device is fixed. For devices that are beyond repair, Delta’s liability limit applies, so consider purchasing supplemental insurance that covers the full replacement cost of high-value power chairs.

For a lost carry-on medical device that was gate-checked inadvertently, the same baggage office can trace it using the tag number. Delta’s internal procedures require a search to be initiated immediately, and the Special Assistance desk can escalate the case.

Final Thoughts: Preparing for a Stress-Free Flight

The difference between a smooth journey and a chaotic one often lives in the details. For travelers with medical devices, that means double-checking your battery inventory against the flight plan, submitting POC forms well ahead of the 48-hour window, and packing a small “medical documents” folder with your doctor’s letter, device specifications, and Delta approval confirmations. Arrive at the airport with enough time to handle security without rushing—two hours for domestic flights, three for international—and communicate openly with gate agents about your needs.

Delta’s 2025 medical device policy rests on the principle that essential health equipment should never be a barrier to travel. By registering your device when required, abiding by FAA battery rules, and packing thoughtfully, you can focus on the purpose of your trip rather than on logistical worries. Whether it’s a short domestic hop or a long-haul overseas flight, Delta’s framework gives you the tools to travel safely and with confidence.