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Cheap flights from Houston to St. Louis from $63

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 1/14. 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

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Frontier Logo
8:45 am - 11:33 pmIAH-STL
14h 48m1 stop
Frontier Logo
3:46 pm - 11:39 pmSTL-IAH
7h 53m1 stop
$129Frontier
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Wed, Jan 28 - Sat, Jan 31
Multiple Airlines Logo
8:19 pm - 11:11 amIAH-STL
14h 52m1 stop
Multiple Airlines Logo
4:45 pm - 11:11 amSTL-IAH
18h 26m1 stop
$132Multiple Airlines
Find Deal
Fri, Jan 23 - Mon, Jan 26
Frontier Logo
6:05 am - 2:48 pmIAH-STL
8h 43m1 stop
Frontier Logo
5:11 pm - 10:01 amSTL-IAH
16h 50m1 stop
$142Frontier
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Fri, Jan 9 - Sun, Jan 11
Multiple Airlines Logo
8:45 am - 11:33 pmIAH-STL
14h 48m1 stop
Multiple Airlines Logo
12:12 pm - 11:58 pmSTL-IAH
11h 46m2 stops
$151Multiple Airlines
Find Deal
Wed, Jan 28 - Sat, Jan 31
Frontier Logo
8:49 am - 10:33 pmIAH-STL
13h 44m1 stop
Frontier Logo
3:30 pm - 6:29 pmSTL-IAH
26h 59m1 stop
$164Frontier
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Thu, Dec 11 - Tue, Dec 16
Multiple Airlines Logo
8:19 pm - 11:11 amIAH-STL
14h 52m1 stop
Multiple Airlines Logo
8:22 pm - 3:08 pmSTL-IAH
18h 46m2 stops
$165Multiple Airlines
Find Deal
Fri, Jan 23 - Mon, Jan 26
American Airlines Logo
10:13 am - 7:22 pmHOU-STL
9h 09m1 stop
American Airlines Logo
7:00 am - 3:47 pmSTL-HOU
8h 47m1 stop
$225American Airlines
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Thu, Dec 25 - Thu, Jan 1
American Airlines Logo
4:55 pm - 10:59 pmHOU-STL
6h 04m1 stop
American Airlines Logo
7:00 am - 3:50 pmSTL-HOU
8h 50m1 stop
$261American Airlines
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Tue, Jan 13 - Tue, Feb 17
Southwest Logo
5:40 am - 7:35 amHOU-STL
1h 55mnonstop
Southwest Logo
2:25 pm - 6:15 pmSTL-HOU
3h 50m1 stop
$287Southwest
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Tue, Jan 13 - Tue, Feb 17
Southwest Logo
12:55 pm - 5:10 pmHOU-STL
4h 15m1 stop
Southwest Logo
9:50 am - 3:45 pmSTL-HOU
5h 55m2 stops
$298Southwest
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Tue, Jan 13 - Tue, Feb 17

Delta flights from Houston to St. Louis

Our best Delta deals on Houston to St. Louis flight tickets
Delta
Jan 8
HOU5:45 amHouston Hobby
5h 17m
1 stop
STL11:02 amLambert-St Louis
Jan 12
STL3:45 pmLambert-St Louis
6h 48m
1 stop
HOU10:33 pmHouston Hobby
$387
Find similar
Delta
Dec 8
HOU6:47 pmHouston Hobby
4h 55m
1 stop
STL11:42 pmLambert-St Louis
Jan 13
STL9:59 amLambert-St Louis
6h 11m
1 stop
HOU4:10 pmHouston Hobby
$390
Find similar
Delta
Jan 8
HOU5:45 amHouston Hobby
5h 17m
1 stop
STL11:02 amLambert-St Louis
Jan 12
STL3:45 pmLambert-St Louis
6h 48m
1 stop
HOU10:33 pmHouston Hobby
$398
Find similar

Southwest flights from Houston to St. Louis

Our best Southwest deals on Houston to St. Louis flight tickets
Southwest
Jan 13
HOU5:40 amHouston Hobby
1h 55m
STL7:35 amLambert-St Louis
Feb 17
STL2:25 pmLambert-St Louis
3h 50m
1 stop
HOU6:15 pmHouston Hobby
$287
Find similar
Southwest
Jan 13
HOU12:55 pmHouston Hobby
4h 15m
1 stop
STL5:10 pmLambert-St Louis
Feb 17
STL9:50 amLambert-St Louis
5h 55m
2 stops
HOU3:45 pmHouston Hobby
$298
Find similar
Southwest
Jan 28
HOU12:55 pmHouston Hobby
4h 15m
1 stop
STL5:10 pmLambert-St Louis
Jan 31
STL4:45 pmLambert-St Louis
2h 15m
HOU7:00 pmHouston Hobby
$303
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 November 26, 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

Wed 1/28

8:45 am-11:33 pm

1 stop14h 48m

Lambert-St Louis

Sat 1/31

3:46 pm-11:39 pm

1 stop7h 53m

$129

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Fri 1/23

8:19 pm-11:11 am

1 stop14h 52m

Lambert-St Louis

Mon 1/26

4:45 pm-11:11 am

1 stop18h 26m

$132

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Fri 1/9

6:05 am-2:48 pm

1 stop8h 43m

Lambert-St Louis

Sun 1/11

5:11 pm-10:01 am

1 stop16h 50m

$142

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Wed 1/28

8:45 am-11:33 pm

1 stop14h 48m

Lambert-St Louis

Sat 1/31

12:12 pm-11:58 pm

2 stops11h 46m

$151

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Thu 12/11

8:49 am-10:33 pm

1 stop13h 44m

Lambert-St Louis

Tue 12/16

3:30 pm-6:29 pm

1 stop26h 59m

$164

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Fri 1/23

8:19 pm-11:11 am

1 stop14h 52m

Lambert-St Louis

Mon 1/26

8:22 pm-3:08 pm

2 stops18h 46m

$165

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Thu 12/25

10:13 am-7:22 pm

1 stop9h 09m

Lambert-St Louis

Thu 1/1

7:00 am-3:47 pm

1 stop8h 47m

$225

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Tue 1/13

4:55 pm-10:59 pm

1 stop6h 04m

Lambert-St Louis

Tue 2/17

7:00 am-3:50 pm

1 stop8h 50m

$261

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Tue 1/13

5:40 am-7:35 am

Nonstop1h 55m

Lambert-St Louis

Tue 2/17

2:25 pm-6:15 pm

1 stop3h 50m

$287

HoustonSt. Louis

HOU - STL

HOUSTL

Houston Hobby

Tue 1/13

12:55 pm-5:10 pm

1 stop4h 15m

Lambert-St Louis

Tue 2/17

9:50 am-3:45 pm

2 stops5h 55m

$298

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 cheapest month to fly to St. Louis?

In general, September 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 $249. The month of October is another great option to travel to St. Louis, with average flight prices from Houston averaging around $262.

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 $285. 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 $428. 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 $339 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 $371 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 $343 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 $284 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 $109Free CancellationRating
5.8
3,099 reviews
Search Frontier flights
United AirlinesPriceFrom $149Free CancellationRating
7.4
9,046 reviews
Search United Airlines flights
American AirlinesPriceFrom $180Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
SouthwestPriceFrom $202Free CancellationRating
8.0
4,254 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
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
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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