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Cheap flights from Houston George Bush Intcntl Airport to St. Louis from $55

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 George Bush Intcntl Airport 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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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
8:07 pm - 8:59 amIAH-STL
12h 52m1 stop
Frontier Logo
12:07 pm - 9:47 pmSTL-IAH
9h 40m1 stop
$110Frontier
Find Deal
jue., dic. 4 - lun., dic. 8
Frontier Logo
8:49 am - 10:33 pmIAH-STL
13h 44m1 stop
Frontier Logo
10:47 am - 10:50 pmSTL-IAH
12h 03m1 stop
$111Frontier
Find Deal
jue., dic. 4 - lun., dic. 8
Frontier Logo
10:28 pm - 11:22 amIAH-STL
12h 54m1 stop
Frontier Logo
7:43 pm - 12:31 amSTL-IAH
28h 48m1 stop
$125Frontier
Find Deal
jue., dic. 11 - vie., dic. 12
Frontier Logo
6:45 am - 12:50 pmIAH-STL
6h 05m1 stop
Frontier Logo
3:46 pm - 11:39 pmSTL-IAH
7h 53m1 stop
$128Frontier
Find Deal
lun., feb. 2 - mié., feb. 4
Frontier Logo
8:07 pm - 10:33 pmIAH-STL
26h 26m1 stop
Frontier Logo
3:30 pm - 6:29 pmSTL-IAH
26h 59m1 stop
$129Frontier
Find Deal
mié., dic. 3 - dom., dic. 7
Frontier Logo
6:04 am - 2:29 pmIAH-STL
8h 25m1 stop
Frontier Logo
10:24 am - 9:39 amSTL-IAH
23h 15m1 stop
$144Frontier
Find Deal
jue., nov. 27 - dom., nov. 30
Frontier Logo
8:08 pm - 11:57 pmIAH-STL
27h 49m1 stop
Frontier Logo
4:13 pm - 6:29 pmSTL-IAH
26h 16m1 stop
$145Frontier
Find Deal
mié., nov. 26 - lun., dic. 1
Frontier Logo
11:48 am - 6:58 pmIAH-STL
7h 10m1 stop
Frontier Logo
4:13 pm - 9:39 amSTL-IAH
17h 26m1 stop
$151Frontier
Find Deal
jue., nov. 27 - dom., nov. 30
Frontier Logo
11:48 am - 10:02 amIAH-STL
22h 14m1 stop
Frontier Logo
7:43 pm - 10:53 amSTL-IAH
15h 10m1 stop
$154Frontier
Find Deal
vie., nov. 21 - lun., nov. 24
Frontier Logo
10:31 pm - 11:22 amIAH-STL
12h 51m1 stop
Frontier Logo
3:30 pm - 6:29 pmSTL-IAH
26h 59m1 stop
$155Frontier
Find Deal
dom., dic. 7 - mar., dic. 9

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
Dec 4
IAH8:07 pmHouston George Bush Intcntl
12h 52m
1 stop
STL8:59 amLambert-St Louis
Dec 8
STL12:07 pmLambert-St Louis
9h 40m
1 stop
IAH9:47 pmHouston George Bush Intcntl
$110
Find similar
Frontier
Dec 4
IAH8:49 amHouston George Bush Intcntl
13h 44m
1 stop
STL10:33 pmLambert-St Louis
Dec 8
STL10:47 amLambert-St Louis
12h 03m
1 stop
IAH10:50 pmHouston George Bush Intcntl
$111
Find similar
Frontier
Dec 11
IAH10:28 pmHouston George Bush Intcntl
12h 54m
1 stop
STL11:22 amLambert-St Louis
Dec 12
STL7:43 pmLambert-St Louis
28h 48m
1 stop
IAH12:31 amHouston George Bush Intcntl
$125
Find similar

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

Our best American Airlines deals on Houston George Bush Intcntl Airport to St. Louis flight tickets
American Airlines
Feb 14
IAH6:05 amHouston George Bush Intcntl
11h 58m
1 stop
STL6:03 pmLambert-St Louis
Feb 18
STL6:00 amLambert-St Louis
10h 28m
1 stop
IAH4:28 pmHouston George Bush Intcntl
$203
Find similar
American Airlines
Nov 24
IAH6:08 amHouston George Bush Intcntl
9h 04m
1 stop
STL3:12 pmLambert-St Louis
Nov 29
STL4:32 pmLambert-St Louis
6h 55m
1 stop
IAH11:27 pmHouston George Bush Intcntl
$343
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Houston George Bush Intcntl Airport 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 noviembre 13, 2025.
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

Fly to

Route

Depart

Return

Price

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

jue. 12/4

8:07 pm-8:59 am

1 stop12h 52m

Lambert-St Louis

lun. 12/8

12:07 pm-9:47 pm

1 stop9h 40m

$110

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

jue. 12/4

8:49 am-10:33 pm

1 stop13h 44m

Lambert-St Louis

lun. 12/8

10:47 am-10:50 pm

1 stop12h 03m

$111

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

jue. 12/11

10:28 pm-11:22 am

1 stop12h 54m

Lambert-St Louis

vie. 12/12

7:43 pm-12:31 am

1 stop28h 48m

$125

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

lun. 2/2

6:45 am-12:50 pm

1 stop6h 05m

Lambert-St Louis

mié. 2/4

3:46 pm-11:39 pm

1 stop7h 53m

$128

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

mié. 12/3

8:07 pm-10:33 pm

1 stop26h 26m

Lambert-St Louis

dom. 12/7

3:30 pm-6:29 pm

1 stop26h 59m

$129

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

jue. 11/27

6:04 am-2:29 pm

1 stop8h 25m

Lambert-St Louis

dom. 11/30

10:24 am-9:39 am

1 stop23h 15m

$144

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

mié. 11/26

8:08 pm-11:57 pm

1 stop27h 49m

Lambert-St Louis

lun. 12/1

4:13 pm-6:29 pm

1 stop26h 16m

$145

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

jue. 11/27

11:48 am-6:58 pm

1 stop7h 10m

Lambert-St Louis

dom. 11/30

4:13 pm-9:39 am

1 stop17h 26m

$151

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

vie. 11/21

11:48 am-10:02 am

1 stop22h 14m

Lambert-St Louis

lun. 11/24

7:43 pm-10:53 am

1 stop15h 10m

$154

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

dom. 12/7

10:31 pm-11:22 am

1 stop12h 51m

Lambert-St Louis

mar. 12/9

3:30 pm-6:29 pm

1 stop26h 59m

$155

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 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 May is another great option to travel to St. Louis, with average flight prices from Houston George Bush Intcntl Airport averaging around $337.

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 George Bush Intcntl Airport 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 $373 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

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 George Bush Intcntl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $382 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 George Bush Intcntl Airport for as low as $234 on momondo.

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

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

You could potentially save up to 1% 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 November 2025, prices for Houston George Bush Intcntl Airport to St. Louis flights are approximately 28% 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

$208

Fastest flight time

1h 57m

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 $208. The best round-trip flight deal from Houston George Bush Intcntl Airport to St. Louis found on momondo in the last 72 hours is $331.
The fastest flight from Houston George Bush Intcntl Airport to St. Louis takes 1h 57m
Direct flights go from Houston George Bush Intcntl Airport to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
Search flight deals

  • 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. 6h 05m 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 $109Free CancellationRating
5.8
3,114 reviews
Search Frontier flights
United AirlinesPriceFrom $177Free CancellationRating
7.4
9,015 reviews
Search United Airlines flights
American AirlinesPriceFrom $180Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights

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

    United Airlines operates around 22 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 $380, but momondo users have found United Airlines deals from Houston George Bush Intcntl Airport to St. Louis from as low as $177 round-trip. United Airlines has been scored 7.4/10 in 9,015 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
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?

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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