Cheap Flights from St Louis to Chicago
No deal from St Louis to Chicago has cleared our price bar yet. What we have seen on the route is below.
Across 4 months of observations from St Louis to Chicago, the lowest round-trip fare we recorded was $108, in August. The typical fare was $174. August was the cheapest month we saw and July the dearest.
The most recent price we saw on this route was $117 on Southwest, seen Oct 14. It is an unverified observation and may have changed.
See every deal <a href="/from/st-louis">from St Louis</a>, <a href="/to/chicago">to Chicago</a>, or the return direction <a href="/from/chicago/to/st-louis">Chicago to St Louis</a>.
Latest price we saw: St Louis to Chicago
The most recent round-trip fare our sweep found on this route. It is not verified and may have changed since the date shown.
| From | Price | Per mile | Travel dates | Airline | Seen | Check price |
|---|---|---|---|---|---|---|
| St Louis (STL) to Chicago (MDW) | $117 | 23.2¢ | Nov 5 – Nov 11 | Southwest | Oct 14 | Check price |
Price history: St Louis to Chicago
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $117 | $184 | 43 |
| Sep 2026 | $117 | $201 | 23 |
| Aug 2026 | $108 | $170 | 95 |
| Jul 2026 | $141 | $141 | 1 |
Frequently asked questions
How many flight deals from St Louis to Chicago are on Sparkflights right now?
There are 0 verified deals from St Louis to Chicago on the board right now. The list refreshes hourly.
What is the lowest price ever seen from St Louis to Chicago?
The lowest fare we've recorded from St Louis to Chicago is $108, based on 162 price observations over 4 months.
How much does a flight from St Louis to Chicago cost?
The typical round-trip fare we observed from St Louis to Chicago is $174, against a recorded low of $108. These are observations, not quotes.
When is the cheapest month to fly St Louis to Chicago?
August was the cheapest month we observed from St Louis to Chicago and July the dearest, over 4 months of data.
What is the current price from St Louis to Chicago?
The most recent fare our sweep saw from St Louis to Chicago is $117, on Oct 14. It is an unverified observation rather than a verified deal, so check it before booking.