Cheap flights
Cheap flights from United States to Chicago
Track the cheapest United States–Chicago fares — currently from €25.
Fares shown in EUR, observed from live searches.
Here's everything you need to book a cheap flight from United States to Chicago: the cheapest fares we've tracked, how prices change month to month, and a free alert that watches the route for you.
United States to Chicago flight prices by month
The cheapest month to fly United States to Chicago is Aug 2026, with fares from €25. Use the table below to find the cheapest time to travel.
| Month | Cheapest fare |
|---|---|
| Jul 2026 | €58 |
| Aug 2026Cheapest | €25 |
| Sep 2026Cheapest | €25 |
| Oct 2026 | €103 |
| Nov 2026 | €108 |
| Dec 2026 | €117 |
| Jan 2027 | €114 |
| Feb 2027 | €114 |
| Mar 2027 | €116 |
Popular destinations from United States
Frequently asked questions
How much is a flight from United States to Chicago?
The cheapest United States–Chicago fare we've tracked recently is €25 one-way. The lowest prices usually appear in Aug 2026.
What is the cheapest month to fly from United States to Chicago?
Aug 2026 is currently the cheapest month to fly from United States to Chicago, with fares from €25. See the month-by-month table above for the full year.
How far in advance should I book United States to Chicago?
For United States–Chicago, booking a few weeks to a few months ahead usually gives the best price. Flexible dates and mid-week departures help you save even more.
Can I set a price alert for United States to Chicago?
Yes — Flyozo watches the United States–Chicago route for free and emails you the moment the fare drops.
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Going the other way
Prices on this page are observed from live flight searches (59,721 recent fares), not estimates. Last updated Jul 30, 2026. Actual prices change constantly — always confirm on the booking site.