Cheap flights from Chicago to St Louis from $60 MDW, ORD, RFD → STL
Chicago Midway International Airport (MDW), O'Hare International Airport (ORD), Chicago Rockford International Airport (RFD) → Lambert-St. Louis International Airport (STL)
The cheapest return found recently is $483 with American Airlines, 5 Apr 2027 – 16 Apr 2027, found 2 days ago. The cheapest one-way found recently is $60 with Southwest Airlines, 9 Jan 2027, found 2 days ago.
- Cheapest one-way found recently
- $60, Southwest Airlines, found 2 days ago
- Cheapest return found recently
- $483, 5 Apr 2027 to 16 Apr 2027
- Cheapest month to fly
- January 2027, one-way fares from $60 found in the last 7 days
- Airlines with nonstop flights
- American Airlines, Southwest Airlines
- Shortest nonstop flight found
- 1 h 10 min
Return
Not enough comparable prices yet for a usual return price.
Cheapest return found recently
$483
5 Apr 2027 – 16 Apr 2027 · American Airlines
O'Hare International Airport (ORD) → Lambert-St. Louis International Airport (STL)
Leaves 10:38 p.m. · Return leaves 12:27 p.m. · 2 h 40 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Cheapest nonstop return
$483
5 Apr 2027 – 16 Apr 2027 · American Airlines
O'Hare International Airport (ORD) → Lambert-St. Louis International Airport (STL)
Leaves 10:38 p.m. · Return leaves 12:27 p.m. · 2 h 40 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Found recently, and the cheapest we hold
$483 5 Apr 2027 – 16 Apr 2027found 2 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 24 days, 9 Oct to 11 Nov, the cheapest return we saw each day was $219 to $494.
24 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Not enough comparable prices yet: we hold return fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other 11-night return fares leaving within 3 days of 5 Apr 2027 to compare.
Every date we hold
4 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 5 Apr 2027 – 16 Apr 2027 | $483 | American Airlines | O'Hare International Airport (ORD) → Lambert-St. Louis International Airport (STL) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
Airlines on the cheapest dates: American Airlines.
One-way
The cheapest one-way fare on each of 3 departure dates is usually $65 to $81.
Cheapest one-way found recently
$60
9 Jan 2027 · Southwest Airlines
Chicago Midway International Airport (MDW) → Lambert-St. Louis International Airport (STL)
Leaves 2:40 p.m. · 1 h 10 min trip
nonstop
found 2 days ago
Cheapest nonstop one-way
$60
9 Jan 2027 · Southwest Airlines
Chicago Midway International Airport (MDW) → Lambert-St. Louis International Airport (STL)
Leaves 2:40 p.m. · 1 h 10 min trip
nonstop
found 2 days ago
Found recently, and the cheapest we hold
$60 9 Jan 2027found 2 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 43 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $54 to $355.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 3 departure dates from 18 Nov to 9 Jan 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 9 Jan 2027 to compare.
Every date we hold
6 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 18 Nov | $92 | American Airlines | O'Hare International Airport (ORD) → Lambert-St. Louis International Airport (STL) | nonstop | found 5 days ago | Open this trip |
| 9 Dec | $70 | American Airlines | O'Hare International Airport (ORD) → Lambert-St. Louis International Airport (STL) | nonstop | found 4 days ago | Open this trip |
| 9 Jan 2027 | $60 | Southwest Airlines | Chicago Midway International Airport (MDW) → Lambert-St. Louis International Airport (STL) | nonstop | found 2 days ago | Open this trip |
Which month looks cheapest?
January 2027 is the cheapest month — from $60.
Airlines on the cheapest dates: American Airlines, Southwest Airlines.
Premium cabin fares from Chicago to St Louis
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 5 Apr 2027 – 16 Apr 2027 in another cabin: Premium economy · Business · First
Today's prices for 9 Jan 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Chicago to St Louis?
Return
Not enough history yet: in 24 days of return prices, 9 Oct to 11 Nov, fewer than 3 booking ranges had prices on 7 days or more.
One-way
Fares 14 to 29 days before departure were typically 42% lower than 7 to 13 days before departure.
From the cheapest one-way each day between 24 Sept and 11 Nov (43 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 7–13 days | $97 | $92 | +73% | 7 |
| 14–29 days | $56 | $54 | Cheapest seen | 27 |
| 30–59 days | $65 | $55 | +16% | 14 |
| 60–89 days | $72 | $57 | +29% | 27 |
Live price for these dates
The cheapest return found recently is for 5 Apr 2027 – 16 Apr 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Chicago to St Louis?
The cheapest return found recently is $483 with American Airlines, 5 Apr 2027 to 16 Apr 2027, found 2 days ago.
How much is a one-way flight from Chicago to St Louis?
The cheapest one-way found recently is $60 with Southwest Airlines, 9 Jan 2027, found 2 days ago. The cheapest one-way fare on each of 3 departure dates is usually $65 to $81.
What is the cheapest month to fly from Chicago to St Louis?
January 2027 is the cheapest month for a one-way, from $60, 9 Jan 2027, found 2 days ago.
How far ahead should I book a flight from Chicago to St Louis?
In 43 days of prices between 24 Sept and 11 Nov, one-way fares 14 to 29 days before departure were typically 42% lower than 7 to 13 days before departure.
Is there a direct flight from Chicago to St Louis?
Yes, the cheapest nonstop return found recently is $483 with American Airlines, 5 Apr 2027 to 16 Apr 2027, found 2 days ago. The cheapest nonstop one-way found recently is $60 with Southwest Airlines, 9 Jan 2027, found 2 days ago.
How long is the flight from Chicago to St Louis?
The cheapest nonstop one-way found recently, with Southwest Airlines on 9 Jan 2027, takes 1 h 10 min from Chicago Midway International Airport (MDW) to Lambert-St. Louis International Airport (STL).
Which airlines have the cheapest flights from Chicago to St Louis?
Between 18 Nov and 9 Jan 2027, American Airlines has the cheapest one-way on 2 of the 3 departure dates we hold, and Southwest Airlines on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work