United Airlines Pet Policy for Dogs in 2026
What dog owners need to know about United’s in-cabin rules, fees, carrier requirements, restrictions, and booking steps before flying.
United Airlines Pet Policy Overview
United Airlines allows small dogs to travel in the cabin on select flights when they remain in an approved carrier that fits under the seat. United no longer offers a standard checked-pet option for most travelers, so larger dogs generally need a separate cargo solution rather than passenger baggage transport.
Because United’s official pet pages are heavily JavaScript-rendered and do not expose all details in a text-friendly format, the most consistently verifiable current public information is that United accepts small pets in cabin for a $125 fee each way and requires the carrier to fit under the seat. United’s older PetSafe checked/cargo program is no longer presented as a standard public passenger option, so travelers with dogs too large for cabin travel should confirm alternatives directly with United before booking.
Last updated: 2026-03-25
How to Book Your Dog on United Airlines
- Start on united.com and search for a flight that works for your route and aircraft. Because pet space is limited, book as early as possible. 2. During booking, look for the option to add a pet in cabin. If the website does not show availability, contact United to confirm whether the flight can accept an in-cabin pet. 3. Before paying, make sure your dog is small enough to stay inside a closed carrier that fits under the seat in front of you for the full flight. 4. Review your route carefully. International and partner-airline itineraries can have extra restrictions, and some destinations have government import rules for dogs. 5. Pay the in-cabin pet fee of $125 each way when prompted or as directed by United. 6. On travel day, arrive early and bring your dog in the approved carrier. Expect airport staff to verify that the carrier fits requirements and that your dog can remain safely inside it. 7. Keep your dog in the carrier in the airport and onboard unless TSA screening requires temporary removal at security. 8. If your dog is too large for cabin travel, do not assume United will accept the dog as checked baggage; confirm alternatives with the airline before finalizing your trip.
United Airlines vs Other Airlines
| Feature | United Airlines | American Airlines | Delta Air Lines |
|---|---|---|---|
| In-Cabin Fee | $125 each way | $150 per kennel each way | $150 each way within U.S./Canada/Puerto Rico/U.S. Virgin Islands; $200 on many international routes |
| Cargo Fee | No standard public checked-pet option for most travelers | Varies through American Airlines Cargo; checked pets only for active-duty military and State Department personnel on official orders | Varies through Delta Cargo; checked pets generally limited to active-duty military and U.S. Foreign Service officers on transfer orders |
| Weight Limit | No published combined weight limit on United’s public pet pages | 20 lbs total for pet + carrier on select A321T aircraft; otherwise pet must fit carrier rules and under-seat space | No published combined weight limit; pet must fit comfortably in kennel under seat |
| Carrier Size | Must fit under seat; no single universal published dimension on United public pet pages | Soft-sided recommended: 18 x 11 x 11 in | Recommended soft-sided kennel: 18 x 11 x 11 in |
| Breeds Restricted | No general in-cabin breed list publicly published on the accessible United pages reviewed | Route and destination restrictions apply; no broad in-cabin breed list on main pet page | Destination restrictions apply; snub-nosed restrictions apply for checked/cargo contexts |
| Booking Method | Add pet during booking on united.com or contact United; limited spots | Add carry-on pet in aa.com or app, then pay at airport | Contact Delta Reservations after booking; first-come, first-served |
Frequently Asked Questions
Does United Airlines allow dogs in the cabin?
Yes. United allows small dogs in the cabin when they travel in an approved carrier that fits under the seat in front of you and space is available on the flight.
How much does United charge for a dog in the cabin?
United’s current publicly cited in-cabin pet fee is $125 each way.
Can my large dog fly as checked baggage on United?
Usually no. United does not present a standard checked-pet option for most passenger bookings on its public pet pages, so larger dogs generally cannot be checked like regular baggage.
Does United publish a pet-and-carrier weight limit?
United’s accessible public pet pages reviewed for this article do not publish a single combined pet-and-carrier weight limit. The practical rule is that your dog must fit comfortably inside a closed carrier under the seat.
What size pet carrier can I use on United?
United requires an in-cabin carrier that fits under the seat in front of you. Because under-seat space varies by aircraft, travelers should verify fit for their specific flight if they are close to the limit.
How do I reserve a pet spot on United?
Try adding your pet during booking on united.com. If the option is unavailable or unclear, contact United directly because pet capacity is limited and handled on a first-come, first-served basis.
Can I bring my dog on an international United flight?
Sometimes, but it depends on the destination, government import rules, and whether the itinerary is operated by United or a partner airline. Always confirm destination rules before booking.
What happens if my dog is too big for the carrier?
If your dog cannot stand, turn around, and remain comfortably inside the closed carrier under the seat, United can deny in-cabin travel. Since United does not offer a standard checked-pet option for most travelers, you should confirm alternatives before your trip.