Cheap Flights from IAD to SEA
The Cheapest Round-trip Tickets from to Seattle
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 2 June 2026 | 8 June 2026 | Direct |  | RT from 376 |
The Cheapest Flights for this Month from to Seattle
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 27 March 2026 | 29 March 2026 | 2 Stops |  | RT from 864 |
| 11 April 2026 | 15 April 2026 | Direct | | RT from 417 |
| 2 June 2026 | 8 June 2026 | Direct | | RT from 376 |
| 10 June 2026 | 13 June 2026 | Direct |  | RT from 480 |
| 13 June 2026 | 20 June 2026 | 1 Stop | | RT from 572 |
| 17 June 2026 | 4 July 2026 | 1 Stop |  | RT from 516 |
| 17 July 2026 | 20 July 2026 | 1 Stop | | RT from 504 |
The Cheapest Flights from to Seattle for the Year Ahead
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 27 March 2026 | 29 March 2026 | 2 Stops | | RT from 864 |
| 11 April 2026 | 15 April 2026 | Direct | | RT from 417 |
| 2 June 2026 | 8 June 2026 | Direct | | RT from 376 |
| 17 July 2026 | 20 July 2026 | 1 Stop | | RT from 504 |