Carrying an EpiPen
Through Airport Security
The short version: yes, you can bring it, in your carry-on, at every major airport in the world. The longer, more useful version is what to have ready before you reach the checkpoint, so a routine screening doesn't turn into a delay you didn't need.
Before you leave for the airport
Three things make screening faster everywhere: the medication in its original pharmacy packaging with the prescription label attached, a doctor's letter or prescription copy confirming the diagnosis and the need to carry it, and the auto-injector packed in your carry-on, never in checked luggage. A checked bag sits in an unpressurized, temperature-uncontrolled cargo hold for the length of the flight, which is a real problem for a temperature-sensitive medication and does nothing to help you if a reaction starts mid-flight.
Most allergists recommend carrying at least two auto-injectors, since some reactions need a second dose. If you're traveling long-haul or through multiple connections, a third is reasonable, kept in a separate bag or pocket from the other two so a single lost or damaged bag doesn't leave you without any. Check the expiration date before you pack. If it will expire while you're away, get it refilled before you leave rather than relying on an expired dose or trying to source a replacement abroad.
At the security checkpoint
Tell the screening officer you're carrying a medically necessary item as you reach the checkpoint, rather than waiting for it to be flagged. Most travelers are asked to place it in a separate tray for screening. You can request a visual inspection instead of sending it through the X-ray, but most allergy organizations, including FARE, actually recommend the X-ray: there's no credible evidence that standard airport X-ray or CT scanning affects epinephrine's effectiveness, and a visual inspection carries a small but real risk of the device being mishandled, dropped, or accidentally triggered by an officer unfamiliar with how it works.
Officers in busier or less English-fluent airports may not immediately recognize the device. Having the pharmacy label visible and a doctor's letter ready resolves most questions in seconds. The final decision at any checkpoint rests with the officer on duty, so build in a few extra minutes at security on a route or airport you haven't used before, rather than cutting it close.
The liquid-limit exemption, by region
| Region | Standard liquid limit | Medical exemption |
|---|---|---|
| United States (TSA) | 3.4oz (100ml) per container | Medically necessary liquids exempt in reasonable quantities; declare at the checkpoint for inspection. |
| United Kingdom | 100ml per container | Medically necessary liquids exempt above 100ml; declare with supporting documentation (GP letter or prescription). |
| European Union | 100ml per container | Liquids needed for medical purposes during the trip are a standard exemption category under EU aviation security rules. |
| Canada | 100ml per container | Essential medical items are exempt from the standard liquids bag requirement; declare to the screening officer. |
| Japan | 100ml per container | Auto-injectors can be carried and used on board without advance notice; inform the checkpoint officer and bring a prescription or doctor's note. |
The pattern holds across nearly every country with a modern security framework: a standard liquid cap exists, and medically necessary items are a recognized exemption from it. What varies is how much documentation an individual officer asks for on the day, which is exactly what a pharmacy-labeled box and a doctor's letter are for.
Get emergency medical coverage that includes anaphylaxis treatment abroad before you fly.
Get a SafetyWing Quote →What the airline's own medical kit actually has
This is worth being precise about, since a lot of travel content states it incorrectly. A US law passed in 2024 (the FAA Reauthorization Act, Section 368) directed the Federal Aviation Administration to review whether airline emergency medical kits should be updated to include epinephrine in a form a non-medical crew member can administer, such as an auto-injector. That review had a two-year deadline. As of mid-2026, that deadline has passed without a final rule, and the standing legal requirement for US airlines is still epinephrine in vial form, which needs a trained medical professional on board to draw up and inject correctly. A small number of carriers, Southwest among them, have voluntarily started stocking auto-injectors ahead of any final rule, but this isn't yet the norm across the industry, in the US or internationally.
The practical takeaway doesn't change regardless of how that rulemaking eventually lands: don't treat the airline's medical kit as your plan. Carry your own auto-injector, know where it is at all times during the flight, and tell the cabin crew about a severe allergy when you board so they know to check on you if something starts.
Landing: declaring medication at customs
Most destinations don't require you to formally declare a small personal supply of prescription medication on arrival, but a few do. Thailand and India are two relevant examples for travelers using this site, both of which ask arriving passengers to declare prescription drugs. Rules like this change, and enforcement in practice often differs from what's written, so check current customs guidance for your specific destination before you fly rather than assuming your last trip's experience still applies.
Carrying a prescription copy or doctor's letter covers you either way: it answers a customs question in seconds if asked, and costs nothing if you're never asked at all.
Frequently asked questions
Can I bring an EpiPen through airport security?
Yes. Security agencies in the US, UK, EU, and most other countries treat epinephrine auto-injectors as medically necessary items, exempt from standard carry-on liquid limits. Keep it in original pharmacy packaging with the prescription label visible, declare it, and carry a doctor's letter, especially for international travel.
Does an EpiPen count toward the 100ml liquid limit?
No. In the US, UK, and EU, medically necessary liquid medication is exempt from the standard 100ml (3.4oz) restriction, provided you declare it at the checkpoint. Bring supporting documentation, since the officer on duty makes the final call.
Do airlines carry epinephrine auto-injectors in their own medical kits?
Not reliably, as of mid-2026. US law still requires only vial-form epinephrine in airline medical kits, which needs a trained professional to administer. A 2024 law directed the FAA to review updating this, but the review deadline passed without a final rule. A few airlines, including Southwest, have added auto-injectors voluntarily. Always carry your own regardless.
Do I need to declare my EpiPen at customs when I land?
Some countries require it, including Thailand and India, which ask travelers to declare prescription medication on arrival. Most destinations don't formally require this for a small personal supply, but a prescription copy or doctor's letter resolves any customs question quickly either way.