Flying with a portable oxygen concentrator or CPAP machine is manageable — but only if you know the rules in advance. Airlines, the FAA, and TSA each have their own requirements, and missing any one of them can mean a denied boarding, confiscated equipment, or a flight spent without your therapy. This guide covers what you need to do, when to do it, and what to expect at every step.
As registered nurses who've helped hundreds of travelers with respiratory conditions navigate air travel, we've seen every scenario — from smooth departures to last-minute equipment crises. The difference is almost always preparation.
FAA-Approved Portable Oxygen Concentrators
The FAA maintains a list of approved portable oxygen concentrators (POCs) for in-flight use. Only POCs on this list may be used during flight. Before you book, confirm that your device is FAA-approved.
Current FAA-approved POCs include devices from AirSep, Invacare, Inogen, Philips Respironics, SeQual Technologies, and others. The FDA's current list is the authoritative source — check it at fda.gov or ask your equipment supplier to confirm your device's status. The list updates periodically as devices are added or removed.
Continuous flow vs. pulse dose matters. At cruising altitude (typically 8,000-equivalent cabin pressure), the decreased ambient oxygen concentration means your oxygen needs may differ from sea level. Many POCs deliver pulse-dose (on-demand) oxygen, not continuous flow. If your physician has prescribed continuous flow oxygen, confirm that your POC can meet that delivery mode in flight — not all can. Consult your pulmonologist before flying if your oxygen prescription has changed recently or if your condition is unstable.
Oxygen cylinders (tanks) are prohibited. FAA regulations prohibit passengers from bringing their own gaseous or liquid oxygen cylinders on board. POCs are the only approved option for in-flight use. Compressed oxygen is available through medical oxygen programs offered by some airlines — but this is airline-supplied, not passenger-provided, and requires advance arrangement.
Airline Notification: 48-72 Hours Minimum
Most airlines require advance notice before you board with oxygen or CPAP equipment. The general requirement is 48-72 hours before departure, but requirements vary by airline and some require more notice for international flights. Contact the airline's special services or medical services department — not the general reservations line.
What airlines typically require for POC passengers:
- Physician's statement confirming the medical necessity of supplemental oxygen, the prescribed flow rate, and that you are stable enough to travel by air
- Written confirmation that the POC you're bringing is FAA-approved (model name and manufacturer)
- Proof that you have sufficient battery capacity for 150% of flight time (more on this below)
- For some airlines, a completed airline-specific medical form (the MEDA form, or equivalent)
CPAP machines typically require less documentation, but should still be disclosed to the airline at booking. Most airlines allow CPAP machines as an extra carry-on, free of charge, in addition to your regular baggage allowance — but this policy must be confirmed with your specific carrier, particularly for international flights where different rules may apply.
Codeshare and connecting flights. If your itinerary involves multiple airlines (a codeshare, or a connection on a partner carrier), notify every airline operating a segment — not just the one you booked through. Requirements and approved device lists may differ between carriers. Do this early.
Battery Regulations: The 150% Rule
For POC battery requirements, the standard is 150% of flight time in battery capacity. If your flight is 5 hours, you need at least 7.5 hours of battery life.
For complex itineraries — multi-leg flights with connections, potential delays — calculate based on the worst-case scenario: longest total travel time, not just the scheduled flight. A 4-hour flight with a 2-hour connection is 6 hours of travel, requiring 9 hours of battery capacity.
Lithium battery watt-hour limits:
- Batteries up to 100Wh (watt-hours) are allowed in carry-on without airline approval
- Batteries from 100-160Wh require airline approval but are generally permitted
- Batteries over 160Wh are generally prohibited in carry-on and may require special cargo arrangements
Most POC batteries fall in the 100-160Wh range. Know your battery's watt-hour rating — it's on the battery label or in the device manual. Carry the documentation and be prepared to show it at security or at the gate if asked.
Bring more battery than you think you need. Delays happen. A flight pushed back 3 hours plus a 6-hour flight time means 9 hours of use. Bring backup batteries and confirm your POC supports multiple battery packs.
TSA Screening with Breathing Equipment
TSA screening with oxygen and CPAP equipment is manageable once you know what to expect.
CPAP machines must be removed from bags for X-ray screening. Place the CPAP in a bin separately, similar to a laptop. Use a clear plastic bag or dedicated CPAP bag to keep it clean during screening. Bring a printed copy of your prescription — TSA agents may ask, and having it prevents delays.
POCs require special handling. Inform the TSA officer before the screening process begins that you are traveling with a portable oxygen concentrator. POCs typically pass through X-ray screening, but the screening officer may need to conduct additional inspection. Inform them of the device name and that it is FAA-approved. Keep the device with you at all times — do not check it.
Request a TSA Notification Card. TSA offers a free notification card for travelers with disabilities or medical conditions. It doesn't exempt you from screening but allows you to discreetly communicate your condition to the officer before screening begins. Request one at tsa.gov.
TSA Cares program. TSA Cares provides advance screening assistance for travelers with disabilities or medical conditions. Call 1-855-787-2227 at least 72 hours before your flight to arrange for a TSA Cares Passenger Support Specialist to meet you at the checkpoint. This is particularly helpful for travelers who are anxious about the screening process or need assistance with equipment management during screening.
In-Flight Setup: What to Expect
Once you're on board, a few things to know:
Seat location matters for POC users. Avoid bulkhead seats, exit rows, and seats without under-seat storage — you need to keep your POC within reach and powered. Aisle seats near the front of the cabin are generally best. Reserve this seat when you notify the airline of your POC use — special services can often block an appropriate seat.
Cabin oxygen levels at altitude. Commercial aircraft cabins are pressurized to an equivalent of 6,000-8,000 feet above sea level. For most healthy travelers this is imperceptible. For travelers with COPD, pulmonary fibrosis, heart failure, or severe anemia, this reduced oxygen partial pressure can meaningfully affect oxygenation. Discuss pre-flight oxygen assessments with your pulmonologist if you have moderate-to-severe lung disease. A hypoxic challenge test (simulated altitude oxygen testing) is sometimes ordered for travelers whose in-flight oxygenation is uncertain.
Humidity and dryness. Aircraft cabins have very low humidity (typically 10-20%). For CPAP users, this can worsen upper airway drying and mask fit issues. If your CPAP has a heated humidifier, bring distilled water and use it. If you use a mask seal or nasal rinse before bed at home, do the same inflight and at the hotel. Dry cabin air also thickens secretions — stay well hydrated on travel days.
Coordinate with cabin crew. Before pushback, introduce yourself to a flight attendant and confirm they're aware of your equipment. This is not legally required, but it means the crew knows who you are if you need assistance mid-flight, and it allows them to facilitate power access if your seat has an in-seat power outlet.
International Travel Considerations
International travel with respiratory equipment adds layers of logistics that domestic travel does not.
Voltage and plug compatibility. CPAP machines and POC chargers typically support 100-240V (check the label — it will say "100-240V, 50/60Hz"). This means the device itself will work worldwide, but you need a plug adapter for the destination country's outlet format. Bring the right adapter, and carry a universal adapter as a backup.
Oxygen equipment at your destination. If you use supplemental oxygen at your destination (in your hotel room, not just in flight), arrange this in advance. This is not something to figure out on arrival. Medical oxygen suppliers exist in most international destinations, but they require advance booking, prescription documentation, and specific equipment arrangements. Your travel advisor should coordinate this as part of the booking process.
International airline requirements vary. European carriers, Asian carriers, and carriers in the Middle East and South America each have their own medical equipment policies. Some require their own approved device lists; others accept the FAA list. Some require more than 48-72 hours notice; some require a form completed by a physician in a specific format. Research every carrier on your itinerary before booking.
Documentation for customs. Some countries require documentation for importing medical equipment — even temporarily as a traveler. A physician letter describing the equipment as medically necessary personal equipment, combined with the device's prescription documentation, typically satisfies customs requirements. For extended stays or complex destinations, confirm requirements with the destination country's embassy.
Managing CPAP with Jet Lag
Jet lag disrupts sleep architecture, which can worsen CPAP effectiveness in the first few days at a new destination.
- Keep your CPAP schedule consistent. Set up your CPAP at your first hotel check-in, even if it's afternoon at the destination and you're only napping. Establishing the routine early helps your body recognize sleep signals faster.
- Distilled water. Many destinations have hard water that can damage CPAP humidifiers over time. Carry a small supply of distilled water for the first night; most hotel concierges can source more.
- Mask hygiene. Extended travel days mean more facial oil and residue buildup. Bring mask wipes (CPAP-specific, not household wipes which can degrade silicone) for daily cleaning during transit.
- Altitude at your destination. If you're traveling to high-altitude destinations (Denver, Cusco, Bogotá, Swiss Alps), consult your sleep medicine physician about adjusting your CPAP pressure settings for altitude. Pressure that works at sea level may need adjustment at 8,000 feet. Some newer CPAP models have auto-adjusting altitude compensation — confirm whether yours does.
Communicating Your Needs to Cabin Crew
Flight attendants are trained in basic first aid but are not medical professionals. When you board with respiratory equipment, a brief, direct conversation with the crew goes a long way:
- Tell them you're traveling with a POC or CPAP, where it is, and that it's FAA-approved
- If you need any assistance during the flight (monitoring oxygen saturation, accessing a power outlet, help if you experience respiratory distress), say so clearly at the beginning
- Carry a card or note explaining your condition and your equipment — cabin crew can relay this to any medical professional on board if needed
- Ask about the power outlet availability in your seat before the flight if you need to charge your device inflight
Plan This Before You Book the Flight
The logistics for flying with oxygen or CPAP equipment are not complicated once they're organized — but they require lead time. The physician letter needs to be requested weeks in advance. The airline notification has a deadline. The battery calculation has to account for the full itinerary, not just the longest flight.
WanderWell's RN travel advisors handle these arrangements for our clients — from coordinating with airlines about POC requirements to connecting travelers with oxygen suppliers at international destinations. If you're planning travel with respiratory equipment and want someone who has done this before to manage the details, contact us to start planning.