AirHint found the following cheapest return flights from Houston (IAH) to Frankfurt (FRA) in May 2026 (see full year).
Return flights
| 03 May - 17 May | Delta | ||
| 19 May - 24 May | Delta | ||
| 25 May - 29 May | Condor | ||
| 26 May - 06 Jun | Aer Lingus | ||
| 30 May - 13 Jun | Spirit Airlines | ||
| 21 May - 24 May | British Airways | ||
| 19 May - 24 May | Lufthansa | direct |
Also check the deals for one-way flights from Houston to Frankfurt in May.
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