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Cheap flights from Houston George Bush Intcntl Airport to St. Louis from $61

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Houston George Bush Intcntl Airport to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:28 am - 1:10 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
6h 42m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
2:29 pm - 10:30 pmSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
8h 01m1 stop Atlanta Hartsfield-Jackson
$124Frontier
Wed, Sep 23 - Wed, Sep 30
Frontier Logo
6:05 am - 5:40 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
11h 35m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
6:35 pm - 7:19 amSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
12h 44m1 stop Atlanta Hartsfield-Jackson
$128Frontier
Wed, Oct 14 - Mon, Oct 19
Frontier Logo
9:04 pm - 1:10 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
16h 06m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
2:29 pm - 7:17 amSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
16h 48m1 stop Atlanta Hartsfield-Jackson
$129Frontier
Tue, Sep 22 - Mon, Sep 28
Frontier Logo
6:28 am - 1:10 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
6h 42m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
2:29 pm - 7:17 amSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
16h 48m1 stop Atlanta Hartsfield-Jackson
$130Frontier
Wed, Sep 16 - Mon, Sep 21
United Airlines Logo
11:58 am - 2:10 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
2h 12mnonstop
United Airlines Logo
6:15 am - 8:27 amSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
2h 12mnonstop
$217United Airlines
Sat, Oct 10 - Tue, Oct 13
United Airlines Logo
8:00 am - 10:10 amIAH  Houston George Bush Intcntl-STL Lambert-St Louis
2h 10mnonstop
United Airlines Logo
3:12 pm - 5:25 pmSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
2h 13mnonstop
$217United Airlines
Tue, Sep 22 - Mon, Sep 28
United Airlines Logo
8:00 am - 10:10 amIAH  Houston George Bush Intcntl-STL Lambert-St Louis
2h 10mnonstop
United Airlines Logo
11:15 am - 1:32 pmSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
2h 17mnonstop
$217United Airlines
Tue, Sep 15 - Wed, Sep 16
American Airlines Logo
6:50 pm - 12:27 amIAH  Houston George Bush Intcntl-STL Lambert-St Louis
5h 37m1 stop Chicago O'Hare Intl
American Airlines Logo
5:43 am - 9:29 amSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
3h 46m1 stop Dallas/Fort Worth
$237American Airlines
Mon, Sep 21 - Mon, Sep 28
American Airlines Logo
7:34 am - 12:35 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
5h 01m1 stop Chicago O'Hare Intl
American Airlines Logo
11:31 am - 4:43 pmSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
5h 12m1 stop Chicago O'Hare Intl
$237American Airlines
Wed, Oct 14 - Wed, Oct 21
American Airlines Logo
11:40 am - 7:25 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
7h 45m1 stop Chicago O'Hare Intl
American Airlines Logo
11:32 am - 4:43 pmSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
5h 11m1 stop Chicago O'Hare Intl
$237American Airlines
Thu, Nov 26 - Tue, Dec 1

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Frontier flights from Houston George Bush Intcntl Airport to St. Louis

Our best Frontier deals on Houston George Bush Intcntl Airport to St. Louis flight tickets
Frontier
Sep 23
IAH6:28 amHouston George Bush Intcntl
6h 42m
1 stop
STL1:10 pmLambert-St Louis
Sep 30
STL2:29 pmLambert-St Louis
8h 01m
1 stop
IAH10:30 pmHouston George Bush Intcntl
$124
Frontier
Oct 14
IAH6:05 amHouston George Bush Intcntl
11h 35m
1 stop
STL5:40 pmLambert-St Louis
Oct 19
STL6:35 pmLambert-St Louis
12h 44m
1 stop
IAH7:19 amHouston George Bush Intcntl
$128
Frontier
Sep 22
IAH9:04 pmHouston George Bush Intcntl
16h 06m
1 stop
STL1:10 pmLambert-St Louis
Sep 28
STL2:29 pmLambert-St Louis
16h 48m
1 stop
IAH7:17 amHouston George Bush Intcntl
$129

United Airlines flights from Houston George Bush Intcntl Airport to St. Louis

Our best United Airlines deals on Houston George Bush Intcntl Airport to St. Louis flight tickets
United Airlines
Sep 21
IAH8:15 pmHouston George Bush Intcntl
2h 15m
STL10:30 pmLambert-St Louis
Sep 28
STL6:15 amLambert-St Louis
2h 12m
IAH8:27 amHouston George Bush Intcntl
$217
United Airlines
Oct 9
IAH8:15 pmHouston George Bush Intcntl
2h 15m
STL10:30 pmLambert-St Louis
Oct 13
STL11:10 amLambert-St Louis
2h 15m
IAH1:25 pmHouston George Bush Intcntl
$236
United Airlines
Sep 7
IAH8:00 amHouston George Bush Intcntl
2h 10m
STL10:10 amLambert-St Louis
Sep 14
STL6:15 amLambert-St Louis
2h 12m
IAH8:27 amHouston George Bush Intcntl
$435

momondo Fare Finder

 
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to St. Louis that are best for you.

Fly from

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Route

Depart

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Price

Cheapest round-trip

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Wed 9/23

6:28 am-1:10 pm

1 stop6h 42m

Lambert-St Louis

Wed 9/30

2:29 pm-10:30 pm

1 stop8h 01m

$124

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Wed 10/14

6:05 am-5:40 pm

1 stop11h 35m

Lambert-St Louis

Mon 10/19

6:35 pm-7:19 am

1 stop12h 44m

$128

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Tue 9/22

9:04 pm-1:10 pm

1 stop16h 06m

Lambert-St Louis

Mon 9/28

2:29 pm-7:17 am

1 stop16h 48m

$129

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Wed 9/16

6:28 am-1:10 pm

1 stop6h 42m

Lambert-St Louis

Mon 9/21

2:29 pm-7:17 am

1 stop16h 48m

$130

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Sat 10/10

11:58 am-2:10 pm

Nonstop2h 12m

Lambert-St Louis

Tue 10/13

6:15 am-8:27 am

Nonstop2h 12m

$217
Quickest round-trip

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Tue 9/22

8:00 am-10:10 am

Nonstop2h 10m

Lambert-St Louis

Mon 9/28

3:12 pm-5:25 pm

Nonstop2h 13m

$217

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Tue 9/15

8:00 am-10:10 am

Nonstop2h 10m

Lambert-St Louis

Wed 9/16

11:15 am-1:32 pm

Nonstop2h 17m

$217

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Mon 9/21

6:50 pm-12:27 am

1 stop5h 37m

Lambert-St Louis

Mon 9/28

5:43 am-9:29 am

1 stop3h 46m

$237

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Wed 10/14

7:34 am-12:35 pm

1 stop5h 01m

Lambert-St Louis

Wed 10/21

11:31 am-4:43 pm

1 stop5h 12m

$237

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Thu 11/26

11:40 am-7:25 pm

1 stop7h 45m

Lambert-St Louis

Tue 12/1

11:32 am-4:43 pm

1 stop5h 11m

$237

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 George Bush Intcntl 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 typical price of a round-trip flight between Houston George Bush Intcntl Airport and St. Louis?

Prices are currently low for flights on this route.

Typical prices usually range from $264 to $571.
The lowest price recently found on this route was $124.

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

In general, October is the cheapest month to fly from Houston George Bush Intcntl Airport to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $317. The month of November is another great option to travel to St. Louis, with average flight prices from Houston George Bush Intcntl Airport averaging around $323.

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 Wednesday when prices can be found for as low as $306. 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 Friday because tickets tend to average around $416. 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 George Bush Intcntl Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $402 when looking at flights departing in the morning. In the evening is when there is more demand to fly to St. Louis, so prices are often more expensive at around $517 per ticket.

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

Fly from Houston George Bush Intcntl to Lambert-St Louis for the best Houston George Bush Intcntl - Lambert-St Louis flight prices

What cabin class options are available on Houston George Bush Intcntl Airport to St. Louis flights?

There are 4 cabin classes available to choose from on Houston George Bush Intcntl Airport to 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 Houston George Bush Intcntl Airport to St. Louis flights?

You could potentially save up to 21% on your flight if you consider stops on a Houston George Bush Intcntl Airport to St. Louis flight.

How have Houston George Bush Intcntl Airport to St. Louis flight prices changed over time?

As of August 2026, prices for Houston George Bush Intcntl Airport to St. Louis flights are approximately 152% more expensive when compared to flights at the same time last year.

When to book flights from Houston George Bush Intcntl Airport to St. Louis

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

Cheap Houston George Bush Intcntl Airport to St. Louis (IAH to STL) flight deals and tips

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

Best Price Found

$61

Fastest flight time

1h 59m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Houston George Bush Intcntl Airport in the past 72 hours is $61. The best round-trip flight deal from Houston George Bush Intcntl Airport to St. Louis found on momondo in the last 72 hours is $124.
The fastest flight from Houston George Bush Intcntl Airport to St. Louis takes 1h 59m
Direct flights go from Houston George Bush Intcntl Airport to St. Louis every day.
There is 1 airport in St. Louis. From Houston George Bush Intcntl Airport there are direct flights to Lambert-St Louis (STL).
Search flight deals

Frequently asked questions about flying from Houston George Bush Intcntl Airport to St. Louis

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

    The straight-line distance from Houston George Bush Intcntl to Lambert-St Louis is 664.5 mi. 1h 59m is a normal flight duration for this route.

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

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

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

  • How old do you have to be to fly from Houston George Bush Intcntl Airport 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 George Bush Intcntl Airport to Lambert-St Louis Airport.

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

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Houston George Bush Intcntl Airport to St. Louis?

  • What is the most popular airline from Houston George Bush Intcntl Airport to St. Louis?

Best airlines flying from Houston George Bush Intcntl Airport to St. Louis

Compare and see reviews for airlines that fly from Houston George Bush Intcntl Airport to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $111Free CancellationRating
5.6
2,647 reviews
Search Frontier flights
United AirlinesPriceFrom $251Free CancellationRating
7.4
10,121 reviews
Search United Airlines flights

  • United Airlines Flights From Houston George Bush Intcntl Airport to St. Louis

    United Airlines operates around 17 flights from Houston George Bush Intcntl Airport to St. Louis every week. The average price of these flights found in the last 72 hours has been $502, but momondo users have found United Airlines deals from Houston George Bush Intcntl Airport to St. Louis from as low as $251 round-trip. United Airlines has been scored 7.4/10 in 10,121 reviews.

Traveling to a place near St. Louis?

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

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Houston to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Houston to St. Louis flights to just show those with 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 simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from Houston and alert you when they change.

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