Cheap Flights from IAD to SEA
The Cheapest Round-trip Tickets from to Seattle
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 7 October 2025 | 11 October 2025 | Direct |  | RT from 324 |
The Cheapest Flights for this Month from to Seattle
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 13 February 2025 | 14 February 2025 | 1 Stop |  | RT from 559 |
| 1 July 2025 | 3 July 2025 | 1 Stop | | RT from 395 |
| 7 October 2025 | 11 October 2025 | Direct | | RT from 324 |
| 15 November 2025 | 16 November 2025 | Direct | | RT from 329 |
The Cheapest Flights from to Seattle for the Year Ahead
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 13 February 2025 | 14 February 2025 | 1 Stop | | RT from 559 |
| 1 July 2025 | 3 July 2025 | 1 Stop | | RT from 395 |
| 7 October 2025 | 11 October 2025 | Direct | | RT from 324 |
| 15 November 2025 | 16 November 2025 | Direct | | RT from 329 |