| Clue | Source | Date |
|---|---|---|
| Budget flight company founded in 1984 (7) | ||
| No-frills flight company (7) | ||
| Budget flight company (7) | ||
| Cheap flight company (7) | ||
| Low-cost airline based in Dublin | The Guardian Weekend | 14 Oct 2023 |
| Low-cost carrier whose CEO is Michael O'Leary | The Times Specialist Sunday | 07 May 2023 |
| Budget flight operator based in Swords, Dublin | The Times Specialist Sunday | 21 Oct 2018 |
| Economic European carrier named after its founder Christopher |