Flying With Pets: American, United, and Alaska Airlines Compared for 2026
[Published: August 22, 2026 | Last updated: August 22, 2026]
TL;DR
- American Airlines charges $150 each way for a cat or dog in the cabin, and the pet plus carrier can't weigh more than 20 lbs combined (BringFido, 2026).
- American no longer offers general cargo pet transport - checked pets are limited to active-duty military and State Department personnel, so large dogs need a different airline or a ground alternative (ExploreWithLora, 2026).
- United charges the same $150 each way but has no combined weight limit, only a carrier-size limit (PawsOnBoard, 2026).
- Alaska Airlines is the cheapest of the three for in-cabin pets at $100 each way, and it still runs a general cargo program called Pet Connect for larger dogs (Alaska Airlines, 2026).
- Snub-nosed breeds like pugs, bulldogs, and Persian cats are barred from cargo on every major U.S. carrier (Camli, 2026).
What Is the American Airlines Pet Policy?
American Airlines lets cats and small dogs fly in the cabin for $150 each way, and reserves checked-pet travel for active-duty military and State Department employees on orders (BringFido, 2026). Everyone else with a pet too big for the cabin has to book a different carrier or a ground pet-shipping service.
The in-cabin fee is paid at the airport counter on the day of travel, not online during booking (BestiePaws, 2026). Space is capped at roughly five to seven pet carriers per flight depending on the aircraft, so book the pet spot as soon as you book the ticket.
American Airlines Carrier and Weight Rules
The pet, including the carrier, can't weigh more than 20 lbs combined. A soft-sided carrier tops out at 18" x 11" x 11", and a hard-sided carrier at 19" x 13" x 9" (BringFido, 2026). Your dog needs to stand up, turn around, and lie down inside it without touching the sides.
A pet carrier no longer counts as your carry-on item - you can bring a full personal item or carry-on bag in addition to the carrier (BringFido, 2026). A 30-pound dog won't fit under the rules regardless of how it's positioned; American will deny boarding rather than make an exception (BaggagePolicies, 2026).
United Airlines Flying With Pets
United charges $150 each way for a pet in the cabin, and unlike American, it sets no combined weight cap - the only requirement is that the carrier fits under the seat (PawsOnBoard, 2026). That makes United a better fit for a heavier cat or a stocky small dog that would tip over American's 20-lb line.
United dropped its general cargo program in 2026; checked pet travel is now limited to active-duty military and State Department staff, mirroring American's policy (CaninCabCompany, 2026). Carrier limits are tight: a soft-sided carrier can't exceed 18" x 11" x 11", and on Boeing 737 MAX aircraft the carrier height can't exceed 10 inches (PawsOnBoard, 2026).
You can bring up to two pets per passenger on most planes, but the second pet needs its own carrier and an adjacent seat you purchase separately (BringFido, 2026). On smaller aircraft like the A319, A320, and 737 MAX 8/9, United only allows one pet per passenger.
United Airlines Booking and Seating Rules
Add a pet to a domestic booking through united.com or the My Trips section; international pet bookings require a phone call (TravelReadyPets, 2026). Pet owners can't sit in exit rows, the bulkhead row, or Premium Plus seating, since those rows don't have under-seat storage for a carrier.
Flying With Pets United Airlines: Fees at a Glance
| Item | United Airlines Detail |
|---|---|
| In-cabin fee | $150 each way, per pet (PawsOnBoard, 2026) |
| Weight limit | None - carrier must fit under the seat (PawsOnBoard, 2026) |
| Cargo/checked pets | Limited to active-duty military and State Department staff (CaninCabCompany, 2026) |
| Carrier max (soft) | 18" x 11" x 11" (PawsOnBoard, 2026) |
| Pets per passenger | Up to 2 on most aircraft, 1 on smaller jets (BringFido, 2026) |
Alaska Airlines Flying With Pets
Alaska Airlines charges $100 each way for an in-cabin pet, undercutting both American and United by $50 (BringFido, 2026). The airline calls its pet program Fur-st Class Care and markets itself as one of the more pet-friendly U.S. carriers because it still runs a general cargo option.
Larger dogs that don't fit in the cabin can fly through Alaska's Pet Connect cargo program in the climate-controlled baggage compartment, priced at $150 each way domestically and $200 for international routes (Sniffspot, 2026). That's a meaningful difference from American and United, which reserve checked-pet travel for military families only.
In-cabin carriers on Alaska top out at 17" x 11" x 9.5", and combined pet-and-carrier weight can't exceed 20 lbs (Passpaw, 2026). Odorous or noisy animals get routed to the baggage compartment regardless of size (Sniffspot, 2026).
Alaska Airlines Cargo (Pet Connect) Rules
Pet Connect crates need to be hard-sided, leak-proof, and large enough for the dog to stand, turn around, and lie down. Alaska's cargo program is available mainly on domestic routes plus Canada, Mexico, and Costa Rica (PawsportToAdventure, 2026). Fees within Hawaii drop to $35 each way for in-cabin pets flying entirely inside the state (BringFido, 2026).
American vs. United vs. Alaska: Pet Policy Comparison
| Airline | In-Cabin Fee | Weight Limit | Cargo for General Public | Cheapest Option |
|---|---|---|---|---|
| American Airlines | $150 each way | 20 lbs combined | No - military/State Dept. only | United or Alaska |
| United Airlines | $150 each way | None (carrier-size only) | No - military/State Dept. only | Alaska |
| Alaska Airlines | $100 each way | 20 lbs combined (cabin) | Yes - Pet Connect | Alaska |
Alaska is the clear pick on price and flexibility if your dog is too big for a cabin carrier. American and United both push large-dog owners toward ground transport or a pet-shipping company instead of checked cargo.
How to Fly With a Large Dog
A large dog can't fly in the cabin on any of these three airlines, since cabin space is capped at 20 lbs or a carrier that fits under the seat. Owners of big dogs have three realistic paths: Alaska's Pet Connect cargo program, a dedicated pet-shipping service, or ground transport.
Option 1: Alaska Airlines Pet Connect
This is the only general-public cargo option among the three airlines covered here. Book the crate space in advance, use a hard-sided kennel that meets IATA sizing, and check the route - Pet Connect isn't available on every Alaska route or during extreme heat and cold windows.
Option 2: A Pet Relocation or Ground Shipping Service
Companies like CitizenShipper connect owners with drivers who transport pets by ground, which avoids cargo-hold stress entirely (CitizenShipper, 2026). This costs more than a plane ticket but skips weather embargoes and pressurization concerns for brachycephalic or anxious dogs.
Option 3: Book Around the Restriction
Some owners split a road trip with overnight stops, or fly into a hub city and drive the final leg. This adds time but keeps the dog with a family member the entire way instead of separated in a cargo hold.
What Not to Do
Don't try to pass a large dog off as a smaller carrier-sized pet at the gate. Gate agents weigh the carrier, and a dog that doesn't fit results in denied boarding, not a warning (BaggagePolicies, 2026).
Frequently Asked Questions
What is the cheapest airline to fly with a pet: American, United, or Alaska?
Alaska Airlines is cheapest at $100 each way for an in-cabin pet. American and United both charge $150 each way (BringFido, 2026).
Can I check my dog as cargo on American or United Airlines?
No, unless you're active-duty military or State Department personnel on orders. Both airlines removed general-public cargo pet transport (ExploreWithLora, 2026; CaninCabCompany, 2026).
Does United Airlines have a weight limit for pets in the cabin?
No. United has no combined weight limit for cabin pets, only a carrier-size limit - the carrier must fit under the seat in front of you (PawsOnBoard, 2026).
How do I fly with a large dog that doesn't fit in a cabin carrier?
Use Alaska Airlines' Pet Connect cargo program, book a ground pet-shipping service, or drive the trip yourself. American and United no longer offer general cargo for large dogs.
Are snub-nosed breeds like pugs and bulldogs allowed to fly?
They're barred from cargo on American Airlines and similar carriers due to breathing risk at altitude, though they can still fly in the cabin if they meet the size and weight limits (Camli, 2026).
Do these airlines accept emotional support animals?
No. United no longer recognizes emotional support animals, and American and Alaska treat ESAs as regular pets subject to standard fees (CitizenShipper, 2026).
When do I pay the pet fee?
On American, the fee is paid at the airport counter on the day of travel. United and Alaska allow you to add the pet fee during online booking or through My Trips (BestiePaws, 2026; TravelReadyPets, 2026).
Key Takeaways
- Alaska Airlines is cheapest for cabin pets ($100 each way) and is the only one of the three with a general cargo option for large dogs.
- American and United both charge $150 each way and cap checked pets to military and State Department travelers.
- United has no weight limit for cabin pets - only American and Alaska cap combined pet-and-carrier weight at 20 lbs.
- A large dog that can't fit under the seat needs Alaska's Pet Connect, a ground pet-shipping service, or a road trip - not American or United cargo.
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