Cheap Flights from IAD to CHI
The Cheapest Round-trip Tickets from to Chicago
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 19 September 2026 | 22 September 2026 | Direct |  | RT from 179 |
The Cheapest Flights for this Month from to Chicago
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 2 September 2026 | 5 September 2026 | 1 Stop | | RT from 301 |
| 4 September 2026 | 8 September 2026 | 1 Stop | | RT from 317 |
| 11 September 2026 | 13 September 2026 | 1 Stop | | RT from 277 |
| 18 September 2026 | 22 September 2026 | 1 Stop | | RT from 184 |
| 19 September 2026 | 22 September 2026 | 1 Stop | | RT from 179 |
| 27 September 2026 | 28 September 2026 | 1 Stop | | RT from 213 |
| 2 October 2026 | 4 October 2026 | 1 Stop | | RT from 247 |
| 8 October 2026 | 11 October 2026 | 1 Stop | | RT from 263 |
| 29 October 2026 | 1 November 2026 | Direct |  | RT from 289 |
The Cheapest Flights from to Chicago for the Year Ahead
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 19 September 2026 | 22 September 2026 | 1 Stop | | RT from 179 |
| 2 October 2026 | 4 October 2026 | 1 Stop | | RT from 247 |