Cheap flights from St. Louis to Chicago-O'Hare
Cheap return flights from St. Louis to Chicago-O'Hare
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
Chicago-O'Hare flight facts
What you need to know
What are the cheapest airlines?
- Southwest Airlines
- American Airlines
- United Airlines
These airlines usually offer the cheapest flights from St. Louis to Chicago-O'Hare.
What airlines fly indirectly?
- Delta Airlines
- Alaska Airlines
- Spirit Airlines
These airlines fly from St. Louis to Chicago-O'Hare, but you’ll have at least one layover.
How long is the flight?
1 hour 15 minutes
This is the shortest flight time from St. Louis to Chicago-O'Hare.
Alternative flights from the UK to Chicago-O'Hare
Check out prices for other routes
Alternative flights from St. Louis
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the St. Louis/Chicago-O'Hare route. There are around 35 flights on any given week from the UK to Chicago-O'Hare and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from St. Louis to Chicago-O'Hare
Tips and advice from our flight experts
You've searched for flights from St. Louis to Chicago-O'Hare. We've found 25 flights and compared them to give you the best offer. Southwest Airlines is usually the cheapest for this route, so keep an eye on them. The cheapest offer we've found is a one way ticket for £44 from St. Louis to Chicago-O'Hare on 02/03/2026 at 14:35.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 5 airlines that operate the 500 km flight from St. Louis to Chicago-O'Hare.
To find the best offers, book at least 2-3 months in advance or look for last-minute deals. Consider flying with Southwest Airlines, which is popular and offers an average flight duration of 1 hour 15 minutes. After selecting an offer, fill out your information and payment. Don't forget to check our flight + hotel service to save time and money!
Other popular destinations near Chicago-O'Hare
Where other people are flying to
