AirHint found the following cheapest return flights from Denver (DEN) to Athens (ATH) in May 2026 (see full year).
Return flights
| 22 May - 29 May | WestJet | ||
| 29 May - 06 Jun | WestJet | ||
| 17 May - 24 May | Lufthansa | ||
| 24 May - 07 Jun | Frontier Airlines | ||
| 05 May - 12 May | Lufthansa | ||
| 20 May - 29 May | Icelandair | ||
| 30 May - 14 Jun | Frontier Airlines |
Also check the deals for one-way flights from Denver to Athens in May.
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