Cheap Flights from CHI to SEA
The Cheapest Round-trip Tickets from Chicago to Seattle
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 19 September 2026 | 21 September 2026 | Direct |  | RT from 303 |
The Cheapest Flights for this Month from Chicago to Seattle
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 2 September 2026 | 3 September 2026 | 1 Stop |  | RT from 367 |
| 3 September 2026 | 3 September 2026 | Direct | | RT from 428 |
| 15 September 2026 | 11 October 2026 | 1 Stop | | RT from 381 |
| 17 September 2026 | 20 September 2026 | 1 Stop | | RT from 316 |
| 18 September 2026 | 21 September 2026 | 1 Stop | | RT from 340 |
| 19 September 2026 | 21 September 2026 | Direct | | RT from 303 |
| 27 September 2026 | 2 October 2026 | 1 Stop | | RT from 320 |
| 3 October 2026 | 6 October 2026 | 1 Stop | | RT from 308 |
| 9 December 2026 | 16 December 2026 | 1 Stop | | RT from 346 |
The Cheapest Flights from Chicago to Seattle for the Year Ahead
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 19 September 2026 | 21 September 2026 | Direct | | RT from 303 |
| 3 October 2026 | 6 October 2026 | 1 Stop | | RT from 308 |
| 9 December 2026 | 16 December 2026 | 1 Stop | | RT from 346 |