AirHint found the following cheapest return flights from Frankfurt (FRA) to Cologne (CGN) in May 2026 (see full year).
Return flights
| 27 May - 02 Jun | Ryanair | ||
| 28 May - 07 Jun | Ryanair | ||
| 27 May - 29 May | Ryanair | ||
| 24 May - 26 May | Condor | ||
| 24 May - 31 May | Condor | ||
| 25 May - 28 May | Lufthansa | ||
| 23 May - 24 May | Condor |
Also check the deals for one-way flights from Frankfurt to Cologne in May.
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