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 USD
| Annual Avg. Price | 174 USD |
| March 2026 | 48 USD |
| April 2026 | 87 USD |
| May 2026 | 27 USD |
| June 2026 | 83 USD |
| July 2026 | 128 USD |
| August 2026 | 104 USD |
| September 2026 | 42 USD |
| October 2026 | 246 USD |
| November 2026 | 220 USD |
| December 2026 | 220 USD |
| January 2027 | 80 USD |
| February 2027 | 798 USD |
Major airports in Illinois
Illinois - popular routes
- Mexico City to Chicago from $169
- New York to Chicago from $49
- Guadalajara to Chicago from $176
- Dallas to Chicago from $71
- Houston to Chicago from $49
- Atlanta to Chicago from $34
- Los Angeles to Chicago from $319
- Morelia to Chicago from $278
- Orlando to Chicago from $66
- Philadelphia to Chicago from $84
- León to Chicago from $454
- Tampa to Chicago from $53
- San Francisco to Chicago from $283
- Miami to Chicago from $49
- Denver to Chicago from $61
- Phoenix to Chicago from $58
- Seattle to Chicago from $123
- Monterrey to Chicago from $151
- Las Vegas to Chicago from $99
- Washington, D.C. to Chicago from $33
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