The week before I flew with Fig for the first time, I made three separate calls to my vet's office to confirm I had everything. Still showed up at the airport convinced I'd missed something. (I hadn't. But the anxiety was real.)
Pet travel documentation is one of those areas where getting it wrong can mean getting turned away — from the check-in counter, from the gate, or at your destination's customs. Getting it right is not complicated, but you have to know what to ask for and when to ask for it.
Domestic Flights: What You Actually Need
For flights within most countries, the documentation list is shorter than people expect.
Health certificate — This is the big one. A certificate from a licensed veterinarian stating that your pet has been examined and appears healthy for travel. Most airlines require this, and most require it to be issued within a specific window before your flight — typically 7-10 days.
That timing matters. You can't get the certificate two weeks before your flight and call it done. The exam has to happen close to your travel date. Schedule the vet appointment as part of your travel prep, and confirm your specific airline's timeframe requirement when you book.
Rabies vaccination proof — Most airlines require proof of current rabies vaccination, separate from the health certificate (though some vets include it in the health certificate documentation). Have the physical certificate or a dated receipt from your vet.
Airline-specific forms — Some airlines have their own forms in addition to the standard health certificate. Check your specific airline's pet travel page, not just a general checklist. This is the thing people most often miss.
That's generally it for domestic travel. No passport, no microchip requirement (for most domestic routes), no special permits.
International Flights: A Very Different Situation
International pet travel documentation is genuinely complex, and the preparation timeline is weeks to months — not days.
Microchip — Most countries that accept pet imports require ISO 15-digit microchipping. If your pet already has a microchip, confirm it's the correct standard. If they don't, this needs to happen before any other documentation — vaccination records often need to be recorded after the microchip is in place to be valid.
Official health certificate / government-endorsed paperwork — Many countries require health certificates endorsed by a government veterinary authority, not just a private vet. In the US, this means USDA-accredited vets and USDA endorsement. This adds time and steps — you can't just schedule a regular vet appointment and get what you need.
Destination country import requirements — This is where research is essential. Each country has its own requirements: which vaccines are required and in what timeframe, whether specific parasites need to be treated, whether a waiting period applies after vaccination, whether quarantine is mandatory on arrival. Some countries are relatively straightforward. Others have strict import protocols that require months of advance preparation.
Titer testing — Some destinations (notably including many island nations and countries trying to maintain rabies-free status) require a blood titer test proving that your pet's rabies vaccination has produced adequate antibodies. These tests need to be done at approved laboratories, results need to meet specific thresholds, and there's often a minimum waiting period after a passing test before travel is permitted — commonly around 90 days, though some destinations (Australia and New Zealand, for instance) require closer to six months. The exact window depends entirely on where you're headed, so confirm the current number with your destination country's official guidance before you plan around it.
Getting the Timing Right
The document expiration timing is the part that catches people off guard.
For domestic travel: book the vet appointment for your health certificate about one week before your flight date. Earlier is too early.
For international travel: work backward from your travel date accounting for every requirement. If your destination requires a titer test with a 90-day waiting period after a passing result, you need to have that result 90+ days before you travel. Which means your vaccination needs to happen before that. Which means planning needs to start six months out or more. Check the pet passports and microchips for international travel piece for more on this process.
Keeping Your Records Organized
My approach: a dedicated folder (physical or digital) for each pet that includes their vaccination history, any previous health certificates, microchip registration confirmation, and vet contact information. When travel comes up, I can pull it and see immediately what's current.
This also helps at the vet appointment — they can see the full history and issue the health certificate accurately without having to reconstruct records from scratch.
For the broader context of flying logistics, the flying with pets complete guide covers everything from carrier selection to airport day; and cabin vs cargo for your pet is worth reading if you haven't settled that question yet.
Frequently Asked Questions
Can any vet issue the health certificate, or does it need to be a specific type?
For domestic flights, a licensed veterinarian can generally issue the health certificate. For international travel that requires government endorsement (like USDA endorsement in the US), the vet must be accredited by the relevant government authority. If you're traveling internationally, specifically ask whether your regular vet is accredited for this, or ask for a referral to one who is.
What if my health certificate expires before I fly because of a flight delay or cancellation?
This is a real headache. If your flight is significantly delayed and your certificate expires, you'll need a new vet appointment and new paperwork. This is one argument for scheduling the vet appointment as close to the original departure date as possible, and for having travel insurance that covers pet-related disruptions if you're making a complicated international trip.
Does my pet need documentation for the return trip too?
Yes, if you're returning to a country with import requirements. This can sometimes mean a local vet examination at your destination to get a health certificate for re-entry. Plan for this in advance — don't assume getting out was the hard part.
Are digital copies of documents accepted?
Some airlines accept digital documentation and some don't. Have physical copies as backup regardless. At the check-in counter, I've never been in a situation where a physical document wasn't accepted. Digital-only risks a connectivity or device issue at exactly the wrong moment.
My pet has never needed a health certificate for travel before — has something changed?
Documentation requirements have become more consistently enforced over the past several years, and airlines have updated their pet policies multiple times. Even if you flew with your pet before without specific documentation, don't assume that experience reflects current requirements. Check directly with your airline and for international travel, with the destination country's agricultural authority.