United Airlines UA

Last verified: 2026-05-26

Pet carrier in-cabin rules for United Airlines. Check the source and last-verified date before relying on these values for your trip.

BusinessUnder-seat space varies by aircraft

Max carrier size: 45.7 × 27.9 × 27.9 cm (18 × 11 × 11 in)
Max pet + carrier weight: Not published
Soft-sided: recommended

Soft carrier max 18x11x11 in (modelled). Hard carrier max 17.5x12x9 in. No published weight limit. Under-seat clearance varies by aircraft. Unverified cabin-specific fallback: no separate business in-cabin carrier rule found; copied from Economy as a conservative stand-in.

No official source on file Not verified

EconomyUnder-seat space varies by aircraft

Max carrier size: 45.7 × 27.9 × 27.9 cm (18 × 11 × 11 in)
Max pet + carrier weight: Not published
Soft-sided: recommended

Soft carrier max 18x11x11 in. Hard carrier max 17.5x12x9 in.

Source:United — Travelling with pets(united.com)Airline officialFresh reviewLast verified: 2026-05-26

FirstUnder-seat space varies by aircraft

Max carrier size: 45.7 × 27.9 × 27.9 cm (18 × 11 × 11 in)
Max pet + carrier weight: Not published
Soft-sided: recommended

Soft carrier max 18x11x11 in (modelled). Hard carrier max 17.5x12x9 in. No published weight limit. Under-seat clearance varies by aircraft. Unverified cabin-specific fallback: no separate first class in-cabin carrier rule found; copied from Economy as a conservative stand-in.

No official source on file Not verified

Premium economyUnder-seat space varies by aircraft

Max carrier size: 45.7 × 27.9 × 27.9 cm (18 × 11 × 11 in)
Max pet + carrier weight: Not published
Soft-sided: recommended

Soft carrier max 18x11x11 in (modelled). Hard carrier max 17.5x12x9 in. No published weight limit. Under-seat clearance varies by aircraft. Unverified cabin-specific fallback: no separate premium economy in-cabin carrier rule found; copied from Economy as a conservative stand-in.

No official source on file Not verified

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