Which airlines let two pets share one carrier?
15 of the 62 airlines we track that take pets in the cabin allow two in one carrier, usually of the same species, of similar size, and within that airline's single weight limit. 2 more allow two pets per person in separate carriers. Everyone else allows one.
Two pets, one carrier
| Airline | Airline's wording | Source |
|---|---|---|
| Alaska Airlines | Up to 2 pets of the same species and similar size in one carrier; a second carrier only if you buy a second ticket for the adjacent seat. The carrier counts toward your carry-on allowance. | official page read 2026-09-24 |
| Alaska Horizon (Horizon Air) | Up to 2 pets of the same species and similar size in one carrier; a second carrier only if you buy a second ticket for the adjacent seat. The carrier counts toward your carry-on allowance. | official page read 2026-09-24 |
| Allegiant Air | 1 carrier per traveler (up to 2 pets per carrier); counts as 1 of your 2 carry-on items | official page read 2026-09-24 |
| Avelo Airlines | 1 pet carrier per passenger · up to 2 small cats/dogs/rabbits/birds per carrier · up to 8 pet carriers per scheduled flight | official page read 2026-09-05 |
| EL AL Israel Airlines | Up to two pets may travel in a single cage provided their combined weight does not exceed 9 kg and they can be kept together without disturbing each other; the number of pets allowed in the cabin is limited | official page read 2026-08-25 |
| Finnair | Maximum one pet carrier per customer, with up to two pets in that carrier; Finnair usually accepts only two customers with pets in cabin per flight | official page read 2026-08-25 |
| Hawaiian Airlines | 1 pet carrier per ticketed guest (may hold 2 puppies/kittens of the same breed, 8 weeks to 6 months old) | official page read 2026-09-05 |
| ITA Airways | One carrier, which may contain up to two animals of the same species provided the total weight stays within the limit | official page read 2026-08-25 |
| Lufthansa | Max 1 transport container per passenger; normally 1 animal per container, with exceptions allowing 2 animals (two young animals of comparable size min. 12 weeks, two fully grown animals of comparable size, or a mother with one young animal 0–6 weeks) — so max 2 animals per passenger | official page read 2026-08-25 |
| SAS Scandinavian Airlines | One pet carrier per traveler with up to two healthy pets of the same species; the carrier counts as your carry-on. No pets allowed in the cabin in Business on flights to or from North America and Asia, or on SAS charter flights | official page read 2026-08-25 |
| Southwest Airlines | 1 carrier per passenger; 2 same-species pets may share one compliant carrier | official page read 2026-09-24 |
| Swiss International Air Lines | "Per person maximum of 1 pet box is permitted" (filed SWISS tariff); SWISS's pets page states each passenger may take a maximum of two animals in an approved container | official page read 2026-08-25 |
| TAP Air Portugal | One carrier per passenger, which may contain up to two pets of the same species | official page read 2026-08-25 |
| Turkish Airlines | Two animals of the same species that are accustomed to each other may travel in the cabin in the same cage, provided their combined weight does not exceed 8 kg | official page read 2026-08-25 |
| Vueling | Up to 2 cats or dogs in the same carrier, provided they are of the same species and/or litter and do not exceed the permitted weight and size | official page read 2026-08-25 |
Two pets, separate carriers
| Airline | Airline's wording | Source |
|---|---|---|
| United Airlines | Up to 2 pets per person (2nd pet needs its own seat next to yours) — but only 1 pet per person on the A319, A320, A321neo, 737-800/MAX 8 and 737-900/MAX 9, which have less space under the middle seat | official page read 2026-09-23 |
| Etihad Airways | One pet per guest; two pets if travelling with another guest, provided they are from the same household and known to each other (a separate booking form is required for each) | official page read 2026-08-25 |
One pet per passenger
Aegean Airlines, Aeroméxico, Air Canada, Air Europa, Air France, Air Transat, American Airlines, American Eagle (regional, incl. Republic Airways), Asiana Airlines, Austrian Airlines, Avianca, Azul Linhas Aéreas, Breeze Airways, Brussels Airlines, Cape Air, Condor, Contour Airlines, Copa Airlines, Croatia Airlines, Delta Air Lines, Discover Airlines, Edelweiss, Eurowings, Frontier Airlines, GOL Linhas Aéreas, Iberia, JSX, JetBlue, KLM Royal Dutch Airlines, Korean Air, LATAM Airlines, LOT Polish Airlines, Mokulele Airlines, Norwegian, Pegasus Airlines, Porter Airlines, Royal Air Maroc, Saudia, Southern Airways Express, Sun Country Airlines, Transavia, Viva Aerobus, Volaris, WestJet, airBaltic.
Which carrier fits your airline?
Every airline sets its own under-seat size, so the right carrier depends on who you fly. Pick yours for the carriers that clear its published limit: Southwest Airlines · American Airlines · Delta Air Lines · United Airlines · Alaska Airlines · JetBlue · Frontier Airlines · Air Canada · WestJet · all airlines →
Flying over Thanksgiving or Christmas? Read the holiday pet-travel guide →
Carriers that clear the most airlines
Ranked by how many of the 58 airlines with a published cabin limit each one clears at its published size — the same computation behind every fit verdict on this site.
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Mr. Peanut's Gold Series Mini (Low-Profile)Petmate Soft-Sided Kennel Cab (Medium)Mr. Peanut's Gold Series Standard (Expandable)Common questions
Can two pets share one carrier on a plane?
On 15 of the airlines we track, yes: Alaska Airlines, Alaska Horizon (Horizon Air), Allegiant Air, Avelo Airlines, EL AL Israel Airlines, Finnair, Hawaiian Airlines, ITA Airways, Lufthansa, SAS Scandinavian Airlines, Southwest Airlines, Swiss International Air Lines, TAP Air Portugal, Turkish Airlines, Vueling. Most require the same species, a similar size, and that both fit within one weight limit.
Can I bring two pets in two carriers?
United Airlines and Etihad Airways allow two pets per person in separate carriers, with conditions (see their wording). Most other airlines allow one pet per passenger.