AirHint found the following cheapest return flights from Washington (IAD) to Frankfurt (FRA) in May 2026 (see full year).

Return flights

11 May - 25 May	Air France
05 May - 21 May	Air France
05 May - 19 May	Air France
13 May - 20 May	British Airways
08 May - 29 May	Air France
09 May - 31 May	Air France
08 May - 30 May	Air France
08 May - 31 May	Air France
10 May - 07 Jun	Air France
26 May - 09 Jun	Air France
24 May - 03 Jun	Air France
28 May - 12 Jun	Air France
29 May - 12 Jun	Air France
30 May - 12 Jun	Delta
21 May - 26 May	United

Also check the deals for one-way flights from Washington to Frankfurt in May.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Washington to Frankfurt in May from 533€

Return flights