AirHint found the following cheapest one-way flights from Washington (IAD) to Frankfurt (FRA) in September 2026 (see full year).
One-Way flights
| 17 Sep | TAP | ||
| 18 Sep | Icelandair | ||
| 05 Sep | TAP | ||
| 15 Sep | SWISS | ||
| 12 Sep | Icelandair | ||
| 15 Sep | Lufthansa | direct | |
| 05 Sep | United | direct | |
| 18 Sep | United | direct | |
| 17 Sep | United | direct | |
| 12 Sep | Lufthansa | direct |
Also check the deals for return flights from Washington to Frankfurt in September.
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