Personal-item bag · 15.6 × 12.2 × 7.5 in (39.6 × 31 × 19.1 cm)
Fits 1.3 cm (0.5 in) to spare on the depth
18 × 14 × 8 in personal item: who uses it, and bags that fit
18 × 14 × 8 in is 45.7 × 35.6 × 20.3 cm, about 33 litres. It's the exact personal item limit on American Airlines (personal item), Frontier Airlines (personal item), Allegiant Air (personal item), Avianca (personal item), Viva Aerobus (personal item) and Philippine Airlines (personal item).
A bag "fits" here when it has at least 1 cm (0.4 in) to spare on every side, turned whichever way works. 249 of the bags we track do; another 210 are within a centimeter.
Check your bag against 18 × 14 × 8 in
Bags that fit 18 × 14 × 8 in
Personal-item bag (165)
Personal-item bag · 15.6 × 12.2 × 7.5 in (39.6 × 31 × 19.1 cm)
Fits 1.3 cm (0.5 in) to spare on the depth
Personal-item bag · 15.4 × 12.6 × 5.9 in (39.1 × 32 × 15 cm)
Fits 3.6 cm (1.4 in) to spare on the width
Personal-item bag · 16.5 × 11.8 × 5.9 in (41.9 × 30 × 15 cm)
Fits 3.8 cm (1.5 in) to spare on the length
Personal-item bag · 16.5 × 11.8 × 5.9 in (41.9 × 30 × 15 cm)
Fits 3.8 cm (1.5 in) to spare on the length
Personal-item bag · 16.9 × 11.4 × 6.3 in (42.9 × 29 × 16 cm)
Fits 2.8 cm (1.1 in) to spare on the length
Personal-item bag · 16.5 × 11.2 × 6 in (41.9 × 28.4 × 15.2 cm)
Fits 3.8 cm (1.5 in) to spare on the length
Personal-item bag · 13.4 × 7.5 × 5.9 in (34 × 19 × 15 cm)
Fits 5.3 cm (2.1 in) to spare on the depth
Personal-item bag · 16.3 × 11 × 5.9 in (41.4 × 27.9 × 15 cm)
Fits 4.3 cm (1.7 in) to spare on the length
Tote (68)
Tote · 14.2 × 13 × 6.3 in (36.1 × 33 × 16 cm)
Fits 2.5 cm (1 in) to spare on the width
Tote · 16.5 × 12.6 × 6.7 in (42 × 32 × 17 cm)
Fits 3.3 cm (1.3 in) to spare on the depth
Tote · 16.5 × 12.6 × 6.7 in (41.9 × 32 × 17 cm)
Fits 3.3 cm (1.3 in) to spare on the depth
Tote · 15 × 11.8 × 7.1 in (38.1 × 30 × 18 cm)
Fits 2.3 cm (0.9 in) to spare on the depth
Tote · 15.7 × 13 × 7.5 in (39.9 × 33 × 19.1 cm)
Fits 1.3 cm (0.5 in) to spare on the depth
Tote · 17 × 11.8 × 5.5 in (43.2 × 29.8 × 14 cm)
Fits 2.5 cm (1 in) to spare on the length
Tote · 17 × 11.8 × 5.5 in (43.2 × 29.8 × 14 cm)
Fits 2.5 cm (1 in) to spare on the length
Tote · 17 × 11.8 × 5.5 in (43.2 × 29.8 × 14 cm)
Fits 2.5 cm (1 in) to spare on the length
Tote · 16 × 12.5 × 5 in (40.6 × 31.8 × 12.7 cm)
Fits 3.8 cm (1.5 in) to spare on the width
Duffel / weekender (9)
Duffel / weekender · 16.3 × 11.2 × 7.2 in (41.4 × 28.4 × 18.3 cm)
Fits 2 cm (0.8 in) to spare on the depth
Duffel / weekender · 16 × 10 × 7.1 in (40.6 × 25.4 × 18 cm)
Fits 2.3 cm (0.9 in) to spare on the depth
Duffel / weekender · 40 × 30 × 15 cm (15.7 × 11.8 × 5.9 in)
Fits 5.3 cm (2.1 in) to spare on the depth
Duffel / weekender · 16 × 12.5 × 7.5 in (40.6 × 31.8 × 19.1 cm)
Fits 1.3 cm (0.5 in) to spare on the depth
Duffel / weekender · 14.5 × 9.3 × 6.8 in (36.8 × 23.5 × 17.1 cm)
Fits 3.2 cm (1.3 in) to spare on the depth
Duffel / weekender · 17 × 12.2 × 7.5 in (43 × 31 × 19 cm)
Fits 1.3 cm (0.5 in) to spare on the depth
Duffel / weekender · 17.3 × 12.4 × 7.3 in (44 × 31.6 × 18.5 cm)
Fits 1.7 cm (0.7 in) to spare on the length
Duffel / weekender · 41 × 24 × 16 cm (16.1 × 9.4 × 6.3 in)
Fits 4.3 cm (1.7 in) to spare on the depth
Duffel / weekender · 42.5 × 33 × 14.5 cm (16.7 × 13 × 5.7 in)
Fits 2.6 cm (1 in) to spare on the width
Travel backpack (5)
Travel backpack · 16.9 × 11.8 × 6.3 in (43 × 30 × 16 cm)
Fits 2.7 cm (1.1 in) to spare on the length
Travel backpack · 17 × 11 × 5.5 in (43 × 28 × 14 cm)
Fits 2.7 cm (1.1 in) to spare on the length
Travel backpack · 17 × 12.5 × 6 in (43.2 × 31.8 × 15.2 cm)
Fits 2.5 cm (1 in) to spare on the length
Travel backpack · 16.9 × 12.4 × 7 in (42.9 × 31.5 × 17.8 cm)
Fits 2.5 cm (1 in) to spare on the depth
Travel backpack · 17.5 × 12.6 × 6.5 in (44.5 × 32 × 16.5 cm)
Fits 1.3 cm (0.5 in) to spare on the length
Under-seat roller (2)
Under-seat roller · 40 × 30 × 15 cm (15.7 × 11.8 × 5.9 in)
Fits 5.3 cm (2.1 in) to spare on the depth
Under-seat roller · 40 × 30 × 15 cm (15.7 × 11.8 × 5.9 in)
Fits 5.3 cm (2.1 in) to spare on the depth
Other common sizes
- 55 × 40 × 20 cm
- 45 × 36 × 20 cm
- 22 × 14 × 9 in
- 56 × 45 × 25 cm
- 40 × 30 × 20 cm
- 40 × 20 × 25 cm
- 40 × 30 × 15 cm
- 50 × 40 × 20 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.