Personal-item bag · 15.4 × 12.6 × 5.9 in (39.1 × 32 × 15 cm)
Fits 5 cm (2 in) to spare on the depth
50 × 40 × 20 cm cabin bag: who uses it, and bags that fit
50 × 40 × 20 cm is 19.7 × 15.7 × 7.9 in, about 40 litres. No airline we track uses exactly this size, but it's a common size for bags sold as cabin bags.
A bag "fits" here when it has at least 1 cm (0.4 in) to spare on every side, turned whichever way works. 402 of the bags we track do; another 172 are within a centimeter.
Check your bag against 50 × 40 × 20 cm
Bags that fit 50 × 40 × 20 cm
Personal-item bag (251)
Personal-item bag · 16.5 × 11.8 × 5.9 in (41.9 × 30 × 15 cm)
Fits 5 cm (2 in) to spare on the depth
Personal-item bag · 16.5 × 11.8 × 5.9 in (41.9 × 30 × 15 cm)
Fits 5 cm (2 in) to spare on the depth
Personal-item bag · 17.7 × 12 × 5.9 in (45 × 30.5 × 15 cm)
Fits 5 cm (2 in) to spare on the length
Personal-item bag · 48 × 30 × 18 cm (18.9 × 11.8 × 7.1 in)
Fits 2 cm (0.8 in) to spare on the length
Personal-item bag · 42.9 × 29 × 16 cm (16.9 × 11.4 × 6.3 in)
Fits 4 cm (1.6 in) to spare on the depth
Personal-item bag · 41.9 × 28.4 × 15.2 cm (16.5 × 11.2 × 6 in)
Fits 4.8 cm (1.9 in) to spare on the depth
Personal-item bag · 34 × 19 × 15 cm (13.4 × 7.5 × 5.9 in)
Fits 5 cm (2 in) to spare on the depth
Personal-item bag · 41.4 × 27.9 × 15 cm (16.3 × 11 × 5.9 in)
Fits 5 cm (2 in) to spare on the depth
Tote (105)
Tote · 14.2 × 13 × 6.3 in (36.1 × 33 × 16 cm)
Fits 4 cm (1.6 in) to spare on the depth
Tote · 42 × 32 × 17 cm (16.5 × 12.6 × 6.7 in)
Fits 3 cm (1.2 in) to spare on the depth
Tote · 41.9 × 32 × 17 cm (16.5 × 12.6 × 6.7 in)
Fits 3 cm (1.2 in) to spare on the depth
Tote · 38.1 × 30 × 18 cm (15 × 11.8 × 7.1 in)
Fits 2 cm (0.8 in) to spare on the depth
Tote · 45 × 35.1 × 10.4 cm (17.7 × 13.8 × 4.1 in)
Fits 5 cm (2 in) to spare on the length
Tote · 14.5 × 14.3 × 6.5 in (36.8 × 36.2 × 16.5 cm)
Fits 3.5 cm (1.4 in) to spare on the depth
Tote · 17 × 11.8 × 5.5 in (43.2 × 29.8 × 14 cm)
Fits 6 cm (2.4 in) to spare on the depth
Tote · 17 × 11.8 × 5.5 in (43.2 × 29.8 × 14 cm)
Fits 6 cm (2.4 in) to spare on the depth
Tote · 17 × 11.8 × 5.5 in (43.2 × 29.8 × 14 cm)
Fits 6 cm (2.4 in) to spare on the depth
Duffel / weekender (10)
Duffel / weekender · 41.4 × 28.4 × 18.3 cm (16.3 × 11.2 × 7.2 in)
Fits 1.7 cm (0.7 in) to spare on the depth
Duffel / weekender · 40.6 × 25.4 × 18 cm (16 × 10 × 7.1 in)
Fits 2 cm (0.8 in) to spare on the depth
Duffel / weekender · 40 × 30 × 15 cm (15.7 × 11.8 × 5.9 in)
Fits 5 cm (2 in) to spare on the depth
Duffel / weekender · 14.5 × 9.3 × 6.8 in (36.8 × 23.5 × 17.1 cm)
Fits 2.9 cm (1.1 in) to spare on the depth
Duffel / weekender · 17.5 × 13.7 × 7 in (44.5 × 34.8 × 17.8 cm)
Fits 2.2 cm (0.9 in) to spare on the depth
Duffel / weekender · 43 × 31 × 19 cm (17 × 12.2 × 7.5 in)
Fits 1 cm (0.4 in) to spare on the depth
Duffel / weekender · 44 × 31.6 × 18.5 cm (17.3 × 12.4 × 7.3 in)
Fits 1.5 cm (0.6 in) to spare on the depth
Duffel / weekender · 49 × 31 × 19 cm (19.3 × 12.2 × 7.5 in)
Fits 1 cm (0.4 in) to spare on the length
Duffel / weekender · 41 × 24 × 16 cm (16.1 × 9.4 × 6.3 in)
Fits 4 cm (1.6 in) to spare on the depth
Travel backpack (33)
Travel backpack · 46 × 31 × 18 cm (18.1 × 12.2 × 7.1 in)
Fits 2 cm (0.8 in) to spare on the depth
Travel backpack · 46 × 31 × 18 cm (18.1 × 12.2 × 7.1 in)
Fits 2 cm (0.8 in) to spare on the depth
Travel backpack · 43 × 30 × 16 cm (16.9 × 11.8 × 6.3 in)
Fits 4 cm (1.6 in) to spare on the depth
Travel backpack · 47.5 × 32 × 17 cm (18.7 × 12.6 × 6.7 in)
Fits 2.5 cm (1 in) to spare on the length
Travel backpack · 17.7 × 12.8 × 6.5 in (45 × 32.5 × 16.5 cm)
Fits 3.5 cm (1.4 in) to spare on the depth
Travel backpack · 17.7 × 12.8 × 6.5 in (45 × 32.5 × 16.5 cm)
Fits 3.5 cm (1.4 in) to spare on the depth
Travel backpack · 17.7 × 12.8 × 6.5 in (45 × 32.5 × 16.5 cm)
Fits 3.5 cm (1.4 in) to spare on the depth
Travel backpack · 18.9 × 11.2 × 7.1 in (48 × 28.5 × 18 cm)
Fits 2 cm (0.8 in) to spare on the length
Travel backpack · 18.9 × 11.2 × 7.1 in (48 × 28.5 × 18 cm)
Fits 2 cm (0.8 in) to spare on the length
Under-seat roller (3)
Under-seat roller · 40 × 30 × 15 cm (15.7 × 11.8 × 5.9 in)
Fits 5 cm (2 in) to spare on the depth
Under-seat roller · 40 × 30 × 15 cm (15.7 × 11.8 × 5.9 in)
Fits 5 cm (2 in) to spare on the depth
Under-seat roller · 45 × 35 × 18 cm (17.7 × 13.8 × 7.1 in)
Fits 2 cm (0.8 in) to spare on the depth; we added 2 cm for wheels because the brand doesn’t say they’re included
Other common sizes
- 55 × 40 × 20 cm
- 45 × 36 × 20 cm
- 22 × 14 × 9 in
- 56 × 45 × 25 cm
- 40 × 30 × 20 cm
- 18 × 14 × 8 in
- 40 × 20 × 25 cm
- 40 × 30 × 15 cm
- 55 × 35 × 25 cm
- 56 × 36 × 23 cm
- 17 × 13 × 9 in
- 16 × 12 × 6 in
- 17 × 10 × 9 in
- 55 × 40 × 23 cm
- 40 × 30 × 25 cm
- 35 × 20 × 20 cm
Airline limits checked 5 October 2026; bag sizes are each brand's published dimensions. Airline staff have the final say at the gate.