
Cheap flights to Illinois, United States

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Cheapest month to fly to Illinois
Explore price trends for trips to Illinois
Showing prices in GBP
| Annual Avg. Price | 308 GBP |
| March 2026 | 245 GBP |
| April 2026 | 250 GBP |
| May 2026 | 323 GBP |
| June 2026 | 296 GBP |
| July 2026 | 408 GBP |
| August 2026 | 320 GBP |
| September 2026 | 276 GBP |
| October 2026 | 317 GBP |
| November 2026 | 319 GBP |
| December 2026 | 316 GBP |
| January 2027 | 317 GBP |
| February 2027 | 308 GBP |
Major airports in Illinois
Illinois - popular routes
- London to Chicago from £619
- Mexico City to Chicago from £124
- New York to Chicago from £36
- Guadalajara to Chicago from £129
- Dallas to Chicago from £52
- Atlanta to Chicago from £25
- Los Angeles to Chicago from £233
- Houston to Chicago from £36
- León to Chicago from £333
- Orlando to Chicago from £48
- San Francisco to Chicago from £207
- Philadelphia to Chicago from £61
- Tampa to Chicago from £39
- Miami to Chicago from £36
- Monterrey to Chicago from £111
- Seattle to Chicago from £90
- Las Vegas to Chicago from £73
- Calgary to Chicago from £94
- Phoenix to Chicago from £42
- Denver to Chicago from £45
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