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Cheap flights from Chicago O'Hare Intl Airport to St. Louis from $57

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to St. Louis departing on 3/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Chicago O'Hare Intl Airport to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from Chicago O'Hare Intl Airport to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Chicago O'Hare Intl Airport to St. Louis.

Cheap last minute flights

Planning a quick getaway from Chicago O'Hare Intl Airport to St. Louis? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to St. Louis, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Chicago O'Hare Intl Airport to St. Louis

Find recent round-trip train or bus tickets from Chicago O'Hare Intl Airport to St. Louis.

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
8:20 pm - 11:45 amORD-STL
15h 25m1 stop
12:15 pm - 7:40 amSTL-ORD
19h 25m1 stop
$104Southern / Mokulele
Find Deal
Sat, Jan 4 - Sat, Jan 11
8:20 pm - 7:55 pmORD-STL
23h 35m1 stop
12:15 pm - 7:40 amSTL-ORD
19h 25m1 stop
$105Southern / Mokulele
Find Deal
Sun, Jan 5 - Sun, Jan 12
8:20 pm - 11:45 amORD-STL
15h 25m1 stop
12:15 pm - 3:50 pmSTL-ORD
3h 35m1 stop
$106Southern / Mokulele
Find Deal
Sat, Jan 4 - Sat, Jan 11
8:20 pm - 7:55 pmORD-STL
23h 35m1 stop
5:05 pm - 9:52 amSTL-ORD
16h 47m1 stop
Wed, Jan 1 - Sat, Jan 18
3:05 pm - 4:21 pmORD-STL
1h 16mnonstop
5:45 am - 7:12 amSTL-ORD
1h 27mnonstop
$137American Airlines
Find Deal
Tue, Dec 10 - Wed, Dec 11
3:00 pm - 4:20 pmORD-STL
1h 20mnonstop
5:40 am - 7:08 amSTL-ORD
1h 28mnonstop
$138American Airlines
Find Deal
Tue, Jan 7 - Tue, Jan 14
9:35 am - 11:24 pmORD-STL
13h 49m1 stop
5:02 pm - 9:54 amSTL-ORD
16h 52m1 stop
$159Frontier
Find Deal
Thu, Dec 12 - Sun, Dec 15
7:45 pm - 3:21 pmORD-STL
19h 36m2 stops
12:15 pm - 3:50 pmSTL-ORD
3h 35m1 stop
Mon, Dec 16 - Fri, Dec 20
10:50 am - 12:19 pmORD-STL
1h 29mnonstop
5:00 am - 6:35 amSTL-ORD
1h 35mnonstop
$217United Airlines
Find Deal
Wed, Dec 18 - Sun, Dec 22
1:15 pm - 2:36 pmORD-STL
1h 21mnonstop
3:32 pm - 4:54 pmSTL-ORD
1h 22mnonstop
$292United Airlines
Find Deal
Fri, Feb 14 - Mon, Feb 17
8:25 am - 7:55 pmORD-STL
11h 30m1 stop
$57Southern / Mokulele
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Thu, Mar 27
8:20 pm - 7:55 pmORD-STL
23h 35m1 stop
$58Southern / Mokulele
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Sun, Mar 16
4:11 pm - 11:27 pmORD-STL
7h 16m1 stop
$64Frontier
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Sun, Jan 12
2:20 pm - 3:47 pmORD-STL
1h 27mnonstop
$69United Airlines
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Wed, Dec 25
7:25 am - 9:16 amORD-STL
25h 51m1 stop
$73Frontier
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Sun, Jan 26
8:45 pm - 10:09 pmORD-STL
1h 24mnonstop
$74American Airlines
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Thu, Jan 23
2:20 pm - 3:40 pmORD-STL
1h 20mnonstop
$84United Airlines
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Thu, Feb 13
1:40 pm - 11:14 pmORD-STL
9h 34m2 stops
$93Delta
Find Deal
Tue, Jan 7
4:58 pm - 11:14 pmORD-STL
6h 16m2 stops
$98Delta
Find Deal
Sat, Jan 11
8:20 am - 9:46 amORD-STL
1h 26mnonstop
$100American Airlines
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Wed, Dec 11
12:05 pm - 4:25 pmORD-STL
4h 20m1 stop
1:00 pm - 4:40 pmSTL-ORD
3h 40m1 stop
$239Southern / Mokulele
Find Deal
Sun, Nov 24 - Fri, Nov 29
7:05 am - 12:10 pmORD-STL
5h 05m1 stop
9:20 am - 7:37 amSTL-ORD
22h 17m1 stop
$240Southern / Mokulele
Find Deal
Mon, Nov 25 - Sun, Dec 1
12:30 pm - 12:10 pmORD-STL
23h 40m1 stop
9:20 am - 7:25 amSTL-ORD
22h 05m1 stop
$259Southern / Mokulele
Find Deal
Sun, Nov 24 - Tue, Nov 26
12:57 pm - 4:26 pmORD-STL
27h 29m2 stops
1:00 pm - 4:40 pmSTL-ORD
3h 40m1 stop
Sat, Nov 23 - Mon, Nov 25
10:25 am - 3:30 pmORD-STL
29h 05m3 stops
9:20 am - 7:25 amSTL-ORD
22h 05m1 stop
Mon, Nov 25 - Sun, Dec 1
9:40 am - 11:05 amORD-STL
1h 25mnonstop
3:44 pm - 5:05 pmSTL-ORD
1h 21mnonstop
$485American Airlines
Find Deal
Sun, Nov 24 - Fri, Nov 29
10:29 am - 5:51 pmORD-STL
7h 22m1 stop
3:44 pm - 5:05 pmSTL-ORD
1h 21mnonstop
$495American Airlines
Find Deal
Sun, Nov 24 - Fri, Nov 29
9:25 am - 2:59 pmORD-STL
5h 34m1 stop
11:25 am - 4:31 pmSTL-ORD
5h 06m1 stop
$504Delta
Find Deal
Mon, Nov 25 - Thu, Nov 28
3:34 pm - 9:55 pmORD-STL
6h 21m1 stop
6:00 am - 10:37 amSTL-ORD
4h 37m1 stop
$550Delta
Find Deal
Tue, Nov 26 - Fri, Nov 29
2:15 pm - 3:39 pmORD-STL
1h 24mnonstop
1:05 pm - 2:35 pmSTL-ORD
1h 30mnonstop
$663United Airlines
Find Deal
Sat, Nov 23 - Sun, Nov 24
8:45 pm - 10:09 pmORD-STL
1h 24mnonstop
5:45 am - 7:06 amSTL-ORD
1h 21mnonstop
$142American Airlines
Find Deal
Sun, Feb 9 - Wed, Feb 26
8:45 pm - 10:09 pmORD-STL
1h 24mnonstop
12:00 pm - 1:27 pmSTL-ORD
1h 27mnonstop
$143American Airlines
Find Deal
Thu, Jan 9 - Tue, Jan 14
8:45 pm - 10:09 pmORD-STL
1h 24mnonstop
5:40 am - 7:08 amSTL-ORD
1h 28mnonstop
$147American Airlines
Find Deal
Thu, Jan 9 - Mon, Jan 13
8:42 pm - 10:19 pmORD-STL
1h 37mnonstop
6:00 pm - 7:29 pmSTL-ORD
1h 29mnonstop
$148American Airlines
Find Deal
Mon, Jan 6 - Mon, Jan 13
3:00 pm - 4:20 pmORD-STL
1h 20mnonstop
5:45 am - 7:14 amSTL-ORD
1h 29mnonstop
$157American Airlines
Find Deal
Sat, Jan 11 - Sat, Jan 18
8:50 pm - 10:13 pmORD-STL
1h 23mnonstop
5:45 am - 7:07 amSTL-ORD
1h 22mnonstop
$207American Airlines
Find Deal
Thu, Dec 12 - Sun, Dec 15
8:50 pm - 10:13 pmORD-STL
1h 23mnonstop
5:45 am - 7:07 amSTL-ORD
1h 22mnonstop
$208American Airlines
Find Deal
Thu, Dec 12 - Sun, Dec 15
8:15 am - 9:36 amORD-STL
1h 21mnonstop
5:45 am - 7:14 amSTL-ORD
1h 29mnonstop
$217American Airlines
Find Deal
Thu, Dec 26 - Tue, Dec 31
12:55 pm - 2:25 pmORD-STL
1h 30mnonstop
6:30 am - 7:59 amSTL-ORD
1h 29mnonstop
$344United Airlines
Find Deal
Sat, Dec 7 - Sat, Dec 14
10:50 am - 12:12 pmORD-STL
1h 22mnonstop
5:33 pm - 6:55 pmSTL-ORD
1h 22mnonstop
$357United Airlines
Find Deal
Mon, Mar 10 - Sat, Mar 15

American Airlines flights from Chicago O'Hare Intl Airport to St. Louis

Our best American Airlines deals on Chicago O'Hare Intl Airport to St. Louis flight tickets
American Airlines
Dec 10
ORD3:05 pmChicago O'Hare Intl
1h 16m
STL4:21 pmLambert-St Louis
Dec 11
STL5:45 amLambert-St Louis
1h 27m
ORD7:12 amChicago O'Hare Intl
American Airlines
Jan 7
ORD3:00 pmChicago O'Hare Intl
1h 20m
STL4:20 pmLambert-St Louis
Jan 14
STL5:40 amLambert-St Louis
1h 28m
ORD7:08 amChicago O'Hare Intl
American Airlines
Jan 30
ORD8:45 pmChicago O'Hare Intl
1h 24m
STL10:09 pmLambert-St Louis
Feb 12
STL6:00 pmLambert-St Louis
1h 29m
ORD7:29 pmChicago O'Hare Intl

Delta flights from Chicago O'Hare Intl Airport to St. Louis

Our best Delta deals on Chicago O'Hare Intl Airport to St. Louis flight tickets
Delta
Jan 11
ORD6:15 amChicago O'Hare Intl
4h 39m
1 stop
STL10:54 amLambert-St Louis
Jan 18
STL6:30 amLambert-St Louis
6h 25m
1 stop
ORD12:55 pmChicago O'Hare Intl
Delta
Jan 7
ORD1:40 pmChicago O'Hare Intl
9h 34m
2 stops
STL11:14 pmLambert-St Louis
Jan 14
STL2:00 pmLambert-St Louis
4h 49m
1 stop
ORD6:49 pmChicago O'Hare Intl
Delta
Jan 11
ORD4:58 pmChicago O'Hare Intl
6h 16m
2 stops
STL11:14 pmLambert-St Louis
Jan 18
STL6:00 amLambert-St Louis
6h 55m
2 stops
ORD12:55 pmChicago O'Hare Intl

See travel insights to St. Louis from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, May is the cheapest month to fly from Chicago O'Hare Intl Airport to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $236. The month of March is another great option to travel to St. Louis, with average flight prices from Chicago O'Hare Intl Airport averaging around $238.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Saturday when prices can be found for as low as $238. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around $336. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Chicago O'Hare Intl Airport in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $242 when looking at flights departing in the afternoon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $287 per ticket.

What is the cheapest Chicago O'Hare Intl to Lambert-St Louis flight route?

Fly from Chicago O'Hare Intl to Lambert-St Louis for the best Chicago O'Hare Intl - Lambert-St Louis flight prices

How far in advance should I book a flight to St. Louis?

The best time to book a flight to St. Louis from Chicago O'Hare Intl Airport is 43 days out, which is when prices tend to be around $270. In the past 72 hours, momondo users found flights from Chicago O'Hare Intl Airport to St. Louis for as low as $117.

What cabin class options are available on Chicago O'Hare Intl to Lambert-St Louis flights?

There are 4 cabin classes available to choose from on Chicago O'Hare Intl to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Chicago O'Hare Intl Airport to St. Louis flights?

You could potentially save up to 17% on your flight if you consider stops on a Chicago O'Hare Intl Airport to St. Louis flight.

How have Chicago O'Hare Intl Airport to St. Louis flight prices changed over time?

As of November 2024, prices for Chicago O'Hare Intl Airport to St. Louis flights are approximately 11% more expensive when compared to flights at the same time last year.

When to book flights from Chicago O'Hare Intl Airport to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago O'Hare Intl Airport to St. Louis (ORD to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to St. Louis

Best Price Found

$57

Fastest flight time

1h 14m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Chicago O'Hare Intl Airport in the past 72 hours is $57. The best round-trip flight deal from Chicago O'Hare Intl Airport to St. Louis found on momondo in the last 72 hours is $104.
The fastest flight from Chicago O'Hare Intl Airport to St. Louis takes 1h 14m
Direct flights go from Chicago O'Hare Intl Airport to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • How far is Chicago O'Hare Intl to Lambert-St Louis by plane?

    A flight from Chicago O'Hare Intl to Lambert-St Louis will travel around 261.0 mi. By plane, this route typically takes 1h 14m.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Lambert-St Louis Airport?

    Prices for flights from Chicago O'Hare Intl Airport to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Chicago O'Hare Intl Airport to St. Louis?

  • What is the most popular airline from Chicago O'Hare Intl Airport to St. Louis?


Best airlines flying from Chicago O'Hare Intl Airport to St. Louis

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $115Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $128Free CancellationRating
7.4
9,172 reviews
Search United Airlines flights
Southern / MokulelePriceFrom $143Free CancellationRating
6.8
29 reviews
Search Southern / Mokulele flights
  • United Airlines Flights From Chicago O'Hare Intl Airport to St. Louis

    The lowest priced United Airlines flight from Chicago O'Hare Intl Airport to St. Louis from the last 72 hours was $128. Generally, United Airlines has 44 flights on this route every week with an average price of $308. United Airlines is rated 7.4/10 by our users.

  • American Airlines Flights From Chicago O'Hare Intl Airport to St. Louis

    American Airlines (7.2/10 from 10,000 reviews) operates around 17 flights from Chicago O'Hare Intl Airport to St. Louis in any given week. The average American Airlines airfare for this route is around $269, with deals from around $115 rare but found on momondo. Referenced prices are for round-trip Chicago O'Hare Intl Airport to St. Louis flight searches in the last 72 hours.


Why use momondo?

Why should I use momondo to find a flight deal from Chicago to St. Louis?

Finding the right flight to St. Louis from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

Can I find flights from Chicago to St. Louis with flexible booking policies on momondo?

Yes. All flights to St. Louis from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Chicago to St. Louis?

Once you have performed a search for Chicago to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Chicago to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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