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Cheap flights from Houston to St. Louis from $59

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Houston to St. Louis departing on 10/22. 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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0 bags

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Cheap round-trip flights

United Airlines Logo
7:55 pm - 9:58 pmIAH-STL
2h 03mnonstop
United Airlines Logo
5:11 pm - 7:28 pmSTL-IAH
2h 17mnonstop
$117United Airlines
Find Deal
Sat, Oct 4 - Tue, Oct 7
Southwest Logo
5:05 am - 7:05 amHOU-STL
2h 00mnonstop
Southwest Logo
5:50 pm - 8:00 pmSTL-HOU
2h 10mnonstop
$133Southwest
Find Deal
Thu, Nov 6 - Sat, Nov 8
United Airlines Logo
8:35 am - 10:39 amIAH-STL
2h 04mnonstop
United Airlines Logo
8:20 am - 10:40 amSTL-IAH
2h 20mnonstop
$133United Airlines
Find Deal
Thu, Nov 6 - Tue, Nov 11
Southwest Logo
5:05 am - 7:05 amHOU-STL
2h 00mnonstop
Southwest Logo
10:20 pm - 12:30 amSTL-HOU
2h 10mnonstop
$149Southwest
Find Deal
Thu, Nov 6 - Sun, Nov 9
Frontier Logo
8:54 pm - 9:07 amIAH-STL
12h 13m1 stop
Frontier Logo
7:45 pm - 11:39 pmSTL-IAH
27h 54m1 stop
$157Frontier
Find Deal
Thu, Oct 30 - Mon, Nov 3
Frontier Logo
9:08 pm - 9:06 amIAH-STL
11h 58m1 stop
Frontier Logo
7:52 pm - 11:36 pmSTL-IAH
27h 44m1 stop
$158Frontier
Find Deal
Sat, Oct 4 - Tue, Oct 7
American Airlines Logo
9:04 am - 3:09 pmHOU-STL
6h 05m1 stop
American Airlines Logo
5:20 am - 9:42 amSTL-HOU
4h 22m1 stop
$159American Airlines
Find Deal
Sat, Oct 4 - Tue, Oct 7
American Airlines Logo
4:47 pm - 8:53 pmIAH-STL
4h 06m1 stop
American Airlines Logo
8:49 am - 1:35 pmSTL-IAH
4h 46m1 stop
$159American Airlines
Find Deal
Sat, Oct 18 - Sat, Oct 25
Delta Logo
6:00 am - 12:35 pmHOU-STL
6h 35m1 stop
Delta Logo
7:05 am - 1:27 pmSTL-HOU
6h 22m1 stop
$197Delta
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Thu, Nov 6 - Sat, Nov 8
Delta Logo
4:21 pm - 10:04 pmIAH-STL
5h 43m1 stop
Delta Logo
6:00 am - 10:54 amSTL-IAH
4h 54m1 stop
$197Delta
Find Deal
Tue, Oct 7 - Thu, Oct 9

American Airlines flights from Houston to St. Louis

Our best American Airlines deals on Houston to St. Louis flight tickets
American Airlines
Oct 4
HOU9:04 amHouston Hobby
6h 05m
1 stop
STL3:09 pmLambert-St Louis
Oct 7
STL5:20 amLambert-St Louis
4h 22m
1 stop
HOU9:42 amHouston Hobby
$159
Find similar
American Airlines
Oct 4
HOU2:33 pmHouston Hobby
3h 47m
1 stop
STL6:20 pmLambert-St Louis
Oct 6
STL5:11 amLambert-St Louis
4h 22m
1 stop
HOU9:33 amHouston Hobby
$164
Find similar
American Airlines
Jan 17
IAH12:26 pmHouston George Bush Intcntl
5h 57m
1 stop
STL6:23 pmLambert-St Louis
Jan 25
STL4:07 pmLambert-St Louis
5h 44m
1 stop
IAH9:51 pmHouston George Bush Intcntl
$167
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Frontier flights from Houston to St. Louis

Our best Frontier deals on Houston to St. Louis flight tickets
Frontier
Sep 18
IAH6:05 amHouston George Bush Intcntl
8h 59m
1 stop
STL3:04 pmLambert-St Louis
Sep 22
STL4:00 pmLambert-St Louis
5h 53m
1 stop
IAH9:53 pmHouston George Bush Intcntl
$152
Find similar
Frontier
Oct 30
IAH8:54 pmHouston George Bush Intcntl
12h 13m
1 stop
STL9:07 amLambert-St Louis
Nov 3
STL7:45 pmLambert-St Louis
27h 54m
1 stop
IAH11:39 pmHouston George Bush Intcntl
$157
Find similar
Frontier
Oct 4
IAH9:08 pmHouston George Bush Intcntl
11h 58m
1 stop
STL9:06 amLambert-St Louis
Oct 7
STL7:52 pmLambert-St Louis
27h 44m
1 stop
IAH11:36 pmHouston George Bush Intcntl
$158
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Houston to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Houston to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Sat 10/4

7:55 pm-9:58 pm

Nonstop2h 03m

Lambert-St Louis

Tue 10/7

5:11 pm-7:28 pm

Nonstop2h 17m

$117

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Thu 11/6

5:05 am-7:05 am

Nonstop2h 00m

Lambert-St Louis

Sat 11/8

5:50 pm-8:00 pm

Nonstop2h 10m

$133

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Thu 11/6

8:35 am-10:39 am

Nonstop2h 04m

Lambert-St Louis

Tue 11/11

8:20 am-10:40 am

Nonstop2h 20m

$133

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Thu 11/6

5:05 am-7:05 am

Nonstop2h 00m

Lambert-St Louis

Sun 11/9

10:20 pm-12:30 am

Nonstop2h 10m

$149

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Thu 10/30

8:54 pm-9:07 am

1 stop12h 13m

Lambert-St Louis

Mon 11/3

7:45 pm-11:39 pm

1 stop27h 54m

$157

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Sat 10/4

9:08 pm-9:06 am

1 stop11h 58m

Lambert-St Louis

Tue 10/7

7:52 pm-11:36 pm

1 stop27h 44m

$158

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Sat 10/4

9:04 am-3:09 pm

1 stop6h 05m

Lambert-St Louis

Tue 10/7

5:20 am-9:42 am

1 stop4h 22m

$159

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Sat 10/18

4:47 pm-8:53 pm

1 stop4h 06m

Lambert-St Louis

Sat 10/25

8:49 am-1:35 pm

1 stop4h 46m

$159

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Thu 11/6

6:00 am-12:35 pm

1 stop6h 35m

Lambert-St Louis

Sat 11/8

7:05 am-1:27 pm

1 stop6h 22m

$197

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Tue 10/7

4:21 pm-10:04 pm

1 stop5h 43m

Lambert-St Louis

Thu 10/9

6:00 am-10:54 am

1 stop4h 54m

$197

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Houston 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 typical price of a round-trip flight between Houston and St. Louis?

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

In general, April is the cheapest month to fly from Houston to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $264. The month of September is another great option to travel to St. Louis, with average flight prices from Houston averaging around $288.

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 Tuesday when prices can be found for as low as $303. 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 Sunday because tickets tend to average around $468. 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 Houston in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $360 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 $378 per ticket.

What is the cheapest Houston to Lambert-St Louis flight route?

Fly from Houston Hobby to Lambert-St Louis for the best Houston - Lambert-St Louis flight prices

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

You are more likely to see cheaper flights to St. Louis from Houston when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $350 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Houston for as low as $236 on momondo.

What cabin class options are available on Houston to Lambert-St Louis flights?

There are 4 cabin classes available to choose from on Houston 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.

Cheap Houston to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Houston to St. Louis

Fastest flight time

1h 55m

Direct flights

Every day

Airports in St. Louis

1 airport
The fastest flight from Houston to St. Louis takes 1h 55m
Direct flights go from Houston to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
Search flight deals

  • How far is Houston to Lambert-St Louis by plane?

    Houston and Lambert-St Louis are 679.6 mi apart from one another. Typically, this will take 1h 55m by plane in normal conditions.

  • When did momondo last update prices for flights from Houston to Lambert-St Louis Airport?

    Prices for flights from Houston to Lambert-St Louis Airport were last updated today.

  • How many operators does momondo search for flights from Houston to Lambert-St Louis Airport?

  • How old do you have to be to fly from Houston to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Houston to Lambert-St Louis Airport.

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

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Houston to St. Louis

Compare and see reviews for airlines that fly from Houston to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $106Free CancellationRating
5.8
3,177 reviews
Search Frontier flights
United AirlinesPriceFrom $161Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
American AirlinesPriceFrom $180Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $211Free CancellationRating
8.0
4,248 reviews
Search Southwest flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Fenton
Collinsville
Wentzville
Alton
St. Peters
Farmington
Festus
Glencoe
Clayton
Edwardsville
Eureka
Litchfield
Shrewsbury

Why use momondo?

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

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 St. Louis from Houston.

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

All flight searches from Houston to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to St. Louis from Houston. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Houston to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.

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