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Cheap flights from St. Louis to Chicago O'Hare Intl Airport from $49

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Chicago O'Hare Intl Airport departing on 2/11. 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 St. Louis to Chicago

Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to Chicago 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 St. Louis to Chicago.

Cheap last minute flights

Planning a quick getaway from St. Louis to Chicago? 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 Chicago, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from St. Louis to Chicago

Find recent round-trip train or bus tickets from St. Louis to Chicago.

All round-trip flight deals to Chicago

The cheapest plane tickets to Chicago found on KAYAK recently.
5:30 pm - 6:55 pmSTL-ORD
1h 25mnonstop
2:20 pm - 3:40 pmORD-STL
1h 20mnonstop
$97United Airlines
Find Deal
Tue, Feb 11 - Tue, Feb 18
12:15 pm - 7:40 amSTL-ORD
19h 25m1 stop
8:25 am - 8:10 pmORD-STL
11h 45m1 stop
$102Southern / Mokulele
Find Deal
Sun, Feb 23 - Fri, Feb 28
5:15 pm - 4:10 pmSTL-ORD
22h 55m1 stop
9:25 pm - 8:10 pmORD-STL
22h 45m1 stop
$103Southern / Mokulele
Find Deal
Fri, Jan 31 - Sun, Feb 2
8:00 am - 9:36 amSTL-ORD
1h 36mnonstop
10:50 am - 12:16 pmORD-STL
1h 26mnonstop
$112United Airlines
Find Deal
Sat, Feb 8 - Tue, Feb 11
5:40 am - 7:08 amSTL-ORD
1h 28mnonstop
9:55 am - 11:23 amORD-STL
1h 28mnonstop
$127American Airlines
Find Deal
Thu, Jan 23 - Thu, Jan 30
5:40 am - 7:08 amSTL-ORD
1h 28mnonstop
8:45 pm - 10:09 pmORD-STL
1h 24mnonstop
$128American Airlines
Find Deal
Thu, Jan 9 - Mon, Jan 13
6:30 am - 12:55 pmSTL-ORD
6h 25m1 stop
9:46 am - 4:54 pmORD-STL
7h 08m1 stop
$176Delta
Find Deal
Thu, Jan 9 - Sat, Jan 11
10:22 am - 9:15 pmSTL-ORD
10h 53m2 stops
4:15 pm - 10:17 pmORD-STL
6h 02m1 stop
$181Delta
Find Deal
Tue, Feb 11 - Tue, Feb 18
5:20 am - 2:00 pmSTL-ORD
8h 40m2 stops
7:00 am - 2:50 pmORD-STL
7h 50m1 stop
$210Southwest
Find Deal
Sun, Feb 23 - Sat, Mar 1
11:15 am - 6:10 pmSTL-ORD
6h 55m2 stops
1:45 pm - 10:10 pmORD-STL
8h 25m1 stop
$271Southwest
Find Deal
Mon, Jan 6 - Thu, Jan 9
8:00 am - 9:36 amSTL-ORD
1h 36mnonstop
$49United Airlines
Find Deal
Tue, Feb 11
12:15 pm - 3:50 pmSTL-ORD
3h 35m1 stop
$53Southern / Mokulele
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Sun, Feb 9
8:52 pm - 5:05 amSTL-ORD
8h 13m1 stop
$54Frontier
Find Deal
Sat, Feb 22
12:15 pm - 3:50 pmSTL-ORD
3h 35m1 stop
$56Southern / Mokulele
Find Deal
Tue, Jan 14
1:02 pm - 2:35 pmSTL-ORD
1h 33mnonstop
$64United Airlines
Find Deal
Mon, Feb 3
6:00 am - 12:55 pmSTL-ORD
6h 55m2 stops
$93Delta
Find Deal
Thu, Jan 23
5:20 am - 2:00 pmSTL-ORD
8h 40m2 stops
$108Southwest
Find Deal
Thu, Feb 27
6:54 pm - 12:44 amSTL-ORD
5h 50m1 stop
$130Frontier
Find Deal
Mon, Feb 17
6:00 am - 12:55 pmSTL-ORD
6h 55m2 stops
$137Delta
Find Deal
Sun, Jan 26
11:15 am - 6:10 pmSTL-ORD
6h 55m2 stops
$138Southwest
Find Deal
Wed, Jan 1
1:00 pm - 4:32 pmSTL-ORD
3h 32m1 stop
10:59 am - 11:40 pmORD-STL
12h 41m1 stop
Mon, Dec 30 - Mon, Jan 6
1:00 pm - 4:32 pmSTL-ORD
3h 32m1 stop
12:05 pm - 4:25 pmORD-STL
4h 20m1 stop
$209Southern / Mokulele
Find Deal
Mon, Dec 30 - Thu, Jan 2
10:16 am - 11:37 amSTL-ORD
1h 21mnonstop
8:15 am - 9:36 amORD-STL
1h 21mnonstop
$369American Airlines
Find Deal
Mon, Dec 30 - Mon, Jan 6
2:27 pm - 7:24 pmSTL-ORD
4h 57m1 stop
8:42 pm - 10:19 pmORD-STL
1h 37mnonstop
$379American Airlines
Find Deal
Mon, Dec 30 - Mon, Jan 6
9:55 am - 6:10 pmSTL-ORD
8h 15m2 stops
7:30 am - 1:15 pmORD-STL
5h 45m1 stop
$479Southwest
Find Deal
Sun, Dec 29 - Tue, Dec 31
9:55 am - 6:10 pmSTL-ORD
8h 15m2 stops
7:30 am - 5:10 pmORD-STL
9h 40m2 stops
$544Southwest
Find Deal
Fri, Dec 27 - Wed, Jan 1
8:00 am - 9:36 amSTL-ORD
1h 36mnonstop
8:15 pm - 9:45 pmORD-STL
1h 30mnonstop
$551United Airlines
Find Deal
Mon, Dec 30 - Thu, Jan 2
10:13 am - 4:40 pmSTL-ORD
6h 27m1 stop
10:30 am - 10:06 pmORD-STL
11h 36m2 stops
$555Delta
Find Deal
Fri, Dec 27 - Tue, Dec 31
5:17 pm - 11:53 pmSTL-ORD
6h 36m1 stop
10:30 am - 10:06 pmORD-STL
11h 36m2 stops
$631Delta
Find Deal
Mon, Dec 30 - Wed, Jan 1
3:10 pm - 4:44 pmSTL-ORD
1h 34mnonstop
9:13 am - 10:47 amORD-STL
1h 34mnonstop
$663United Airlines
Find Deal
Thu, Dec 26 - Fri, Dec 27
11:30 am - 1:04 pmSTL-ORD
1h 34mnonstop
1:15 pm - 2:36 pmORD-STL
1h 21mnonstop
$97United Airlines
Find Deal
Tue, Feb 11 - Tue, Feb 18
8:00 am - 9:36 amSTL-ORD
1h 36mnonstop
10:50 am - 12:16 pmORD-STL
1h 26mnonstop
$112United Airlines
Find Deal
Sat, Feb 8 - Tue, Feb 11
5:40 am - 7:08 amSTL-ORD
1h 28mnonstop
9:55 am - 11:23 amORD-STL
1h 28mnonstop
$127American Airlines
Find Deal
Thu, Jan 23 - Thu, Jan 30
5:40 am - 7:08 amSTL-ORD
1h 28mnonstop
8:45 pm - 10:09 pmORD-STL
1h 24mnonstop
$128American Airlines
Find Deal
Thu, Jan 9 - Mon, Jan 13
3:10 pm - 4:34 pmSTL-ORD
1h 24mnonstop
8:45 pm - 10:09 pmORD-STL
1h 24mnonstop
$171American Airlines
Find Deal
Tue, Feb 4 - Fri, Feb 7
5:40 am - 7:08 amSTL-ORD
1h 28mnonstop
8:45 pm - 10:09 pmORD-STL
1h 24mnonstop
$186American Airlines
Find Deal
Thu, Jan 30 - Sun, Feb 2
12:00 pm - 1:22 pmSTL-ORD
1h 22mnonstop
8:45 pm - 10:03 pmORD-STL
1h 18mnonstop
$212American Airlines
Find Deal
Sat, Feb 15 - Mon, Feb 17
5:40 am - 7:08 amSTL-ORD
1h 28mnonstop
12:40 pm - 2:07 pmORD-STL
1h 27mnonstop
$213American Airlines
Find Deal
Fri, Jan 10 - Tue, Jan 14
11:04 am - 12:26 pmSTL-ORD
1h 22mnonstop
3:00 pm - 4:21 pmORD-STL
1h 21mnonstop
$232American Airlines
Find Deal
Sun, Feb 23 - Sat, Mar 1
6:30 am - 8:05 amSTL-ORD
1h 35mnonstop
8:15 pm - 9:45 pmORD-STL
1h 30mnonstop
$245United Airlines
Find Deal
Fri, Jan 31 - Sun, Feb 2

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

Our best American Airlines deals on St. Louis to Chicago O'Hare Intl Airport flight tickets
American Airlines
Jan 23
STL5:40 amLambert-St Louis
1h 28m
ORD7:08 amChicago O'Hare Intl
Jan 30
ORD9:55 amChicago O'Hare Intl
1h 28m
STL11:23 amLambert-St Louis
American Airlines
Jan 9
STL5:40 amLambert-St Louis
1h 28m
ORD7:08 amChicago O'Hare Intl
Jan 13
ORD8:45 pmChicago O'Hare Intl
1h 24m
STL10:09 pmLambert-St Louis
American Airlines
Feb 4
STL3:10 pmLambert-St Louis
1h 24m
ORD4:34 pmChicago O'Hare Intl
Feb 7
ORD8:45 pmChicago O'Hare Intl
1h 24m
STL10:09 pmLambert-St Louis

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

Our best Delta deals on St. Louis to Chicago O'Hare Intl Airport flight tickets
Delta
Jan 9
STL6:30 amLambert-St Louis
6h 25m
1 stop
ORD12:55 pmChicago O'Hare Intl
Jan 11
ORD9:46 amChicago O'Hare Intl
7h 08m
1 stop
STL4:54 pmLambert-St Louis
Delta
Feb 11
STL10:22 amLambert-St Louis
10h 53m
2 stops
ORD9:15 pmChicago O'Hare Intl
Feb 18
ORD4:15 pmChicago O'Hare Intl
6h 02m
1 stop
STL10:17 pmLambert-St Louis
Delta
Jan 9
STL6:00 amLambert-St Louis
6h 55m
2 stops
ORD12:55 pmChicago O'Hare Intl
Jan 13
ORD1:40 pmChicago O'Hare Intl
9h 34m
2 stops
STL11:14 pmLambert-St Louis

See travel insights to Chicago from

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

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 Chicago O'Hare Intl Airport?

The month of September is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from St. Louis averaging around $217.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Tuesday when prices can be found for as low as $222. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $305.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

Flying to Chicago O'Hare Intl Airport from St. Louis in the evening is the least expensive time of day to depart. momondo users have found prices as low as $231 when looking at flights departing in the evening. Try not to purchase tickets at noon because they tend to be around $289. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

In general, most travelers find the cheapest time to book a flight to Chicago O'Hare Intl Airport is about 58 days prior to their departure date when tickets on average are $267. Don’t hesitate to check prices now though because momondo users recently found tickets for as low as $98.

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

There are 4 cabin classes available to choose from on Lambert-St Louis to Chicago O'Hare Intl 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 St. Louis to Chicago O'Hare Intl Airport flights?

You could potentially save up to 8% on your flight if you consider stops on a St. Louis to Chicago O'Hare Intl Airport flight.

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

As of December 2024, prices for St. Louis to Chicago O'Hare Intl Airport flights are approximately 2% cheaper when compared to flights at the same time last year.

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

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

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

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

Best Price Found

$49

Fastest flight time

1h 16m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from St. Louis in the past 72 hours is $49. The best round-trip flight deal from St. Louis to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $97.
The fastest flight from St. Louis to Chicago O'Hare Intl Airport takes 1h 16m
Direct flights go from St. Louis to Chicago O'Hare Intl Airport every day.

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

    Lambert-St Louis and Chicago O'Hare Intl are 261.0 mi apart from one another. Typically, this will take 1h 16m by plane in normal conditions.

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

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

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


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

Compare and see reviews for airlines that fly from St. Louis to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $115Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Southern / MokulelePriceFrom $118Free CancellationRating
6.6
27 reviews
Search Southern / Mokulele flights
United AirlinesPriceFrom $119Free CancellationRating
7.4
9,006 reviews
Search United Airlines flights
  • United Airlines Flights From St. Louis to Chicago O'Hare Intl Airport

    The lowest priced United Airlines flight from St. Louis to Chicago O'Hare Intl Airport from the last 72 hours was $119. Generally, United Airlines has 40 flights on this route every week with an average price of $302. United Airlines is rated 7.4/10 by our users.

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

    American Airlines is also a popular choice for this route. American Airlines flight deals for St. Louis to Chicago O'Hare Intl Airport start from as low as $115 round-trip, depending on your selected dates, with average American Airlines deals seen on momondo around $259. American Airlines operates 16 flights to Chicago O'Hare Intl Airport from St. Louis in an average week. Users have rated it 7.2/10 across 10,000 reviews.


Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Chicago from St. Louis.

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

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

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

Once all potential St. Louis to Chicago flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of St. Louis to Chicago flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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