United Airlines

North AmericaFull-ServiceStar Alliance

Carry-On Size Limit

22" × 14" × 9"

56 × 36 × 23 cm

Length22" / 56 cm

Width14" / 36 cm

Height9" / 23 cm

Linear Total45" / 114 cm

18 kg

40 lbs

17" × 10" × 9"

43 × 25 × 23 cm

Each dimension (L, W, H) is checked individually against the limit.

What size carry-on does United Airlines allow?: United Airlines allows carry-on bags with maximum dimensions of 22" × 14" × 9" (56 × 36 × 23 cm). The maximum weight is 18 kg (40 lbs).
Does United Airlines allow a personal item?: Yes, United Airlines allows a personal item up to 17" × 10" × 9" (43 × 25 × 23 cm) in addition to the carry-on bag.
What happens if my bag is too big for United Airlines?: If your carry-on exceeds United Airlines's size limits, you may be required to check it at the gate, which could incur additional fees. We recommend checking your bag dimensions before traveling.
Does United Airlines measure carry-on bags strictly?: Enforcement varies by airline and airport. United Airlines generally enforces limits at busy airports and peak times. Always include wheels, handles, and pockets in your measurements.