AirHint found the following cheapest one-way flights from Washington (IAD) to Barcelona (BCN) in August 2026 (see full year).
One-Way flights
| 17 Aug | TAP | ||
| 04 Aug | TAP | ||
| 05 Aug | TAP | ||
| 21 Aug | TAP | ||
| 08 Aug | TAP | ||
| 04 Aug | Lufthansa | direct | |
| 05 Aug | Lufthansa | direct | |
| 17 Aug | Lufthansa | direct | |
| 21 Aug | United | direct |
Also check the deals for return flights from Washington to Barcelona in August.
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