Verified comparison
| Airline | Free limit | Result | Stated weight |
|---|---|---|---|
| Ryanair | 40 × 30 × 20 cm | Exact fit | No separate max on cited policy |
| Wizz Air | 40 × 30 × 20 cm | Exact fit | 10 kg |
| easyJet | 45 × 36 × 20 cm | Fits | 15 kg |
| Vueling | 40 × 30 × 20 cm | Exact fit | No separate max in cited summary |
Exact fit means zero spare space. A front pocket, wheel or handle extending beyond 40 × 30 × 20 cm can change the result. Measure the packed bag.
Is it the same as an overhead cabin bag?
No. On the airlines above, these measurements describe the small piece that goes under the seat. A second overhead trolley normally requires a separate fare, add-on or qualifying entitlement.
40 × 30 × 20 versus 40 × 30 × 15
The 20 cm bag has roughly one-third more nominal volume than the 15 cm baseline. It fits the four airlines verified here, but 40 × 30 × 15 cm remains the more conservative choice when travelling across airlines outside this list.