Book a Flight With a Pet in 6 Steps
To book a flight with a pet, confirm pet acceptance and pet space with the operating airline for every segment, in both directions, before committing to a fare you can’t change. Then record the fee, any carry-on effect and check-in steps, and save written confirmation. A passenger seat doesn’t mean there’s space for your pet.
This guide shows how to book a flight with a pet traveling in the cabin. Service animals follow different rules. Don’t describe a pet as a service animal unless it qualifies under the applicable rules.
Before you start: what you need on hand
Have your pet’s details, the carrier’s measurements and your proposed flights ready, so the airline can give a yes or no answer.
- Species, breed or type, age and weight
- Carrier model, exterior dimensions and weight (see how to measure your pet and choose a carrier)
- Proposed dates and flight numbers, outbound and return
- Your booking reference, if you’ve already booked
Step 1: Identify the operating airline for each flight
Open the full itinerary and note which airline actually flies each segment. On a codeshare, the airline that sold the ticket may not be the one operating the flight, and the operating airline’s pet rules are the ones that apply.
If the selling airline can’t confirm the pet for a partner’s flight, contact the partner directly.
Step 2: Check eligibility before price
Confirm the route, species, carrier size and aircraft are accepted before comparing fares. A cheaper fare doesn’t help if the route excludes cabin pets.
Route exclusions are common. American Airlines, for example, says on its own pet page[1] that carry-on pets aren’t accepted on transatlantic or transpacific trips. Delta lists destinations[2] where cabin pets aren’t allowed, including the United Kingdom (both checked October 30, 2026). See flying with a dog or cat for a comparison.
Step 3: Secure the pet space
Find out how this airline confirms pet space, whether that can happen at the same time as booking, and how the confirmation is recorded. Airlines handle this differently:
| Airline (checked Oct 30, 2026) | How pets are added, per the airline’s own page |
|---|---|
| Delta | Contact Delta Reservations; cabin pets limited per flight, first come, first served |
| American | Add “carry-on pets” under Additional Services on aa.com or in the app; pay at the airport |
| Alaska | Call or chat with reservations; must be booked before the day of travel |
If the airline makes you buy the ticket first, read the fare’s change and cancellation terms before you pay. Don’t assume every airline offers a hold or free cancellation.
Step 4: Confirm the full charge and the carry-on effect
Ask for the pet fee for your route, its currency, when it’s collected, and whether a connection or stopover adds a charge. Then ask what the carrier does to your cabin baggage allowance.
Fees and baggage rules vary. Delta’s page lists[2] $150 one way within the US for tickets issued on or after April 8, 2025, collected at check-in, plus one personal item or carry-on alongside the kennel. Alaska counts the carrier toward your carry-on allowance. Write the answer next to the segment it applies to.
Step 5: Ask what happens if the itinerary changes
Ask whether the pet booking moves automatically when a flight is rescheduled, the aircraft changes or you’re rebooked after a cancellation. Smaller aircraft can have less under-seat space.
Step 6: Save the confirmation and recheck
Keep the reservation reference, the pet confirmation, the date and channel of contact, and any written airline reply. Recheck after any schedule change. Save a dated copy of the airline’s policy page too.
Copyable call or chat script
Hello. I’d like to travel with [species, breed/type, age, weight] in a [soft/hard] carrier measuring [L × W × H] and weighing [X] on [flight numbers and dates, outbound and return].
Please confirm, for every flight your airline operates on this itinerary: 1. That my pet is accepted and pet space is confirmed 2. The total pet fee, in which currency, and when it’s charged 3. What I can bring as carry-on alongside the carrier 4. The check-in procedure for travelers with pets 5. What happens to the pet booking if the flight or aircraft changes
Could you also add a note to my booking and send confirmation in writing?
Confirmation worksheet
One row per flight. The booking isn’t complete for your pet until every row says “confirmed.”
| Segment | Flight / date | Operating airline | Pet confirmed? (ref) | Fee and currency | Carry-on effect | Check-in steps | Contact date / channel |
|---|---|---|---|---|---|---|---|
| Out 1 | |||||||
| Out 2 | |||||||
| Return 1 | |||||||
| Return 2 |
Example: one unresolved row
Hypothetical example. An itinerary has a two-segment outbound trip and a nonstop return. The owner fills in three rows. The two outbound flights are confirmed, but the return, on a partner airline, isn’t: the selling airline can’t see the partner’s pet inventory. The owner contacts the partner, which confirms space and a different fee. Only then is the trip counted as booked for the pet.
The extra check on the return matters. In a December 2025 public post, a traveler described their dog’s carrier being challenged at check-in for a return flight after the outbound trip went smoothly (traveler account, r/delta[3]). One unverified story proves nothing about an airline, but it’s an easy mistake to avoid: confirm both directions.
Completion check
You’re ready to book a flight with a pet when you have:
- Every operating flight confirmed for your pet, both directions
- A carrier that meets each operating airline’s limits
- Document requirements identified (domestic and international); for international trips, see our international pet travel guide
- Fees and carry-on effects recorded per segment
- Check-in instructions noted
- Written confirmation saved
Frequently asked questions
Can I add my pet after I buy the ticket? Sometimes, but cabin pet space is limited and allocated first come, first served on some airlines. Confirm pet space before buying a non-refundable fare if you can.
Can I book my pet online? It depends on the airline. American lets you add[1] a carry-on pet in its app or on aa.com, while Delta and Alaska direct you to reservations.
Do I pay the pet fee when I book? Not always. Delta collects it at check-in[2], and American at the airport ticket counter. Ask your airline.
What if my flight is operated by another airline? Confirm the pet with that operating airline directly. Its rules and fees apply to its flight.
References
Every rule, fee and policy in this guide is attributed to the source below. We checked each source on October 30, 2026. Traveler accounts from Reddit are individual, unverified experiences, so we use them only to show the kinds of problems owners run into, never as evidence of a rule.
- American Airlines. Pets: carry-on and checked pet policy. Accessed October 30, 2026.
- Delta Air Lines. Pet travel overview. Accessed October 30, 2026.
- Reddit, r/delta. "Almost denied flight at check-in" (traveler post, December 2025; individual, unverified account). Accessed October 30, 2026.
- Alaska Airlines. Pets in cabin. Accessed October 30, 2026.
- U.S. Department of Transportation (DOT). Flying with a pet. Accessed October 30, 2026.
Rules, fees and policies change. This guide reflects sources checked on October 30, 2026, so confirm with the airline, authority or provider for your exact trip. We haven’t tested any product mentioned here, and the examples marked hypothetical aren’t real trips. This page contains no affiliate links.
