Airline vs airline · Checked October 29, 2026
Alaska vs United: baggage rules compared
Carry-on, personal item, checked bag and check-in deadlines for Alaska Airlines and United Airlines, from each airline's own website.
The short version
- The carry-on limits are about the same size on Alaska and United.
| Alaska | United | |
|---|---|---|
| Carry-on size | 22 x 14 x 9 in / about 56 x 36 x 23 cm | 22 x 14 x 9 in / 56 x 35 x 23 cm |
| Carry-on weight | No published limit | No published limit |
| Carry-on on the cheapest fare | Included | Included (Not included in Basic Economy on most routes) |
| Personal item | No size published, must fit under the seat | 17 x 10 x 9 in / 43 x 25 x 22 cm |
| Checked bag size | 62 in (157 cm) in total | 158 cm (62 in) in total |
| Checked bag weight | 23 kg (50 lb) per bag in economy | 23 kg (50 lb) per bag in economy, 45 kg (100 lb) max for any bag |
| Online check-in opens | 24 hours before | 24 hours before |
| Bag drop closes | 40 min before | Not published |
| At the gate by | Not published | Not published |
| Power banks | Standard 100 Wh / 160 Wh rules | Standard 100 Wh / 160 Wh rules |
Carry-on that fits both
22 x 13.8 x 9.1 in (56 x 35 x 23 cm)
The smallest limit on each side
Personal item that fits both
Under the seat
One airline doesn't publish a size
Flying both on one trip? The trip checker shows which airline sets each limit, and the gate card keeps the rules on your phone.
Will your bag fit?
Measure with wheels, handles and pockets included. The order of the sides doesn't matter.
Questions people ask
Is the Alaska carry-on bigger than United?
The carry-on limits are about the same size on Alaska and United.
What carry-on size fits both Alaska and United?
A bag no bigger than 22 x 13.8 x 9.1 in (56 x 35 x 23 cm) fits both carry-on limits. Check weight limits too.