Under the seat
43 × 25 × 22 cm
The personal item is quoted in inches: 9 by 10 by 17.
UA Cabin allowance · October 2026
United Airlines, as the airline publishes it.
Two slots, two sets of numbers. The under-seat box travels free of charge on most fares; the locker is where the fare starts to matter.
Overhead locker
56 × 35 × 22 cm
No weight ceiling is published; the bag has to pass the airport sizer instead.
No weight ceiling published
The under-seat fit
2 bags on this shelf clear United Airlines under the seat.
KMG-01
palamea Backpack 40 x 20 x 25 cm for Ryanair Aeroplane Travel Backpack, Expandable…
40 × 25 × 20 cm · under-seat class · 4.7 / 5
Clears 6 of 18under-seat frames
$70.58
KMG-02
SZLX Ryanair Cabin Bags 40x20x25 Underseat Carry On Bag Easyjet Cabin Bag 45x36x20…
40 × 25 × 20 cm · under-seat class · 4.6 / 5
Clears 6 of 18under-seat frames
$68.10
The locker fit
7 bags clear the United Airlines locker.
KMG-01
CADOLIM Ryanair/Wizzair Vacuum Backpack Hand Luggage Airplane with Pump Travel…
40 × 30 × 20 cm · under-seat class · 5 / 5
Clears 5 of 18under-seat frames
$59.55
KMG-02
WOUIYO Ryanair Hand Luggage 40 x 30 x 20, 24L Travel Hand Luggage Backpack
40 × 30 × 20 cm · under-seat class · 4.7 / 5
Clears 5 of 18under-seat frames
$79.13
KMG-03
BARRENS Hand Luggage Backpack 40 x 30 x 20 cm - Waterproof Travel Backpack for…
40 × 30 × 20 cm · under-seat class · 4.7 / 5
Clears 5 of 18under-seat frames
$80.60
KMG-04
Cabin Max Manhattan Rucksack 40x30x20 cm, 24 l, recycelter Stoff, Fluggenehmigt, Wizz…
40 × 30 × 20 cm · under-seat class · 4.6 / 5
Clears 5 of 18under-seat frames
$53.47
KMG-05
Telura for Ryanair Cabin Bags 40x30x20, Expandable Travel Backpack
40 × 30 × 20 cm · under-seat class · 4.6 / 5
Clears 5 of 18under-seat frames
$63.10
KMG-06
palamea Backpack 40 x 20 x 25 cm for Ryanair Aeroplane Travel Backpack, Expandable…
40 × 25 × 20 cm · under-seat class · 4.7 / 5
Clears 6 of 18under-seat frames
$70.58
KMG-07
SZLX Ryanair Cabin Bags 40x20x25 Underseat Carry On Bag Easyjet Cabin Bag 45x36x20…
40 × 25 × 20 cm · under-seat class · 4.6 / 5
Clears 6 of 18under-seat frames
$68.10