Cheap Flights from CHI to SEA
The Cheapest Round-trip Tickets from Chicago to Seattle
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 17 August 2026 | 21 August 2026 | Direct |  | RT from 164 |
The Cheapest Flights for this Month from Chicago to Seattle
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 11 May 2026 | 13 May 2026 | 1 Stop |  | RT from 307 |
| 20 May 2026 | 25 May 2026 | Direct | | RT from 354 |
| 22 May 2026 | 27 May 2026 | 3 Stops |  | RT from 340 |
| 23 May 2026 | 27 May 2026 | 1 Stop | | RT from 282 |
| 28 May 2026 | 1 June 2026 | 2 Stops | | RT from 352 |
| 29 May 2026 | 31 May 2026 | Direct | | RT from 165 |
| 1 June 2026 | 4 June 2026 | 2 Stops | | RT from 313 |
| 4 June 2026 | 11 June 2026 | 1 Stop | | RT from 320 |
| 20 June 2026 | 30 June 2026 | 1 Stop | | RT from 284 |
| 21 June 2026 | 29 June 2026 | 1 Stop | | RT from 301 |
| 24 June 2026 | 28 June 2026 | 1 Stop | | RT from 278 |
| 13 August 2026 | 16 August 2026 | 1 Stop | | RT from 313 |
| 17 August 2026 | 21 August 2026 | Direct | | RT from 164 |
| 4 September 2026 | 11 September 2026 | Direct | | RT from 359 |
The Cheapest Flights from Chicago to Seattle for the Year Ahead
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 29 May 2026 | 31 May 2026 | Direct | | RT from 165 |
| 24 June 2026 | 28 June 2026 | 1 Stop | | RT from 278 |
| 17 August 2026 | 21 August 2026 | Direct | | RT from 164 |
| 4 September 2026 | 11 September 2026 | Direct | | RT from 359 |