Cheap Flights from IAD to SEA
The Cheapest Round-trip Tickets from to Seattle
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 23 August 2026 | 25 August 2026 | Direct |  | RT from 294 |
The Cheapest Flights for this Month from to Seattle
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 22 July 2026 | 3 August 2026 | 1 Stop |  | RT from 444 |
| 23 July 2026 | 4 August 2026 | 1 Stop | | RT from 440 |
| 24 July 2026 | 26 July 2026 | 1 Stop | | RT from 538 |
| 25 July 2026 | 5 August 2026 | 1 Stop |  | RT from 499 |
| 20 August 2026 | 23 August 2026 | 2 Stops |  | RT from 445 |
| 21 August 2026 | 23 August 2026 | 2 Stops | | RT from 407 |
| 23 August 2026 | 25 August 2026 | Direct | | RT from 294 |
The Cheapest Flights from to Seattle for the Year Ahead
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 23 July 2026 | 4 August 2026 | 1 Stop | | RT from 440 |
| 23 August 2026 | 25 August 2026 | Direct | | RT from 294 |