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Cheap flights from Houston George Bush Intcntl Airport to St. Louis from $45

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
9:14 pm - 11:16 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
26h 02m2 stops Atlanta Hartsfield-Jackson Orlando
Frontier Logo
6:34 pm - 8:55 pmSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
26h 21m2 stops Atlanta Hartsfield-Jackson Orlando
$249Frontier
Fri, Nov 6 - Fri, Nov 13
Frontier Logo
6:05 am - 5:40 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
11h 35m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
6:44 pm - 3:30 pmSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
20h 46m2 stops Atlanta Hartsfield-Jackson Orlando
$255Frontier
Fri, Oct 30 - Mon, Nov 2
Frontier Logo
9:41 am - 12:12 amIAH  Houston George Bush Intcntl-STL Lambert-St Louis
14h 31m2 stops Atlanta Hartsfield-Jackson Orlando
Frontier Logo
12:02 pm - 8:46 amSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
20h 44m1 stop Atlanta Hartsfield-Jackson
$256Frontier
Sat, Dec 5 - Mon, Dec 7
Frontier Logo
3:52 pm - 11:59 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
8h 07m1 stop Orlando
Frontier Logo
1:20 pm - 12:25 amSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
11h 05m1 stop Orlando
$256Frontier
Tue, Nov 24 - Fri, Nov 27
American Airlines Logo
2:37 pm - 8:04 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
5h 27m1 stop Chicago O'Hare Intl
American Airlines Logo
5:29 pm - 12:09 amSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
6h 40m1 stop Chicago O'Hare Intl
$276American Airlines
Thu, Nov 19 - Wed, Nov 25
Delta Logo
6:28 pm - 12:05 amIAH  Houston George Bush Intcntl-STL Lambert-St Louis
5h 37m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:00 am - 1:33 pmSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
7h 33m1 stop Atlanta Hartsfield-Jackson
$276Delta
Fri, Dec 18 - Mon, Dec 21
Delta Logo
4:29 pm - 12:05 amIAH  Houston George Bush Intcntl-STL Lambert-St Louis
7h 36m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:15 pm - 11:59 pmSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
4h 44m1 stop Atlanta Hartsfield-Jackson
$276Delta
Fri, Dec 18 - Mon, Dec 21
United Airlines Logo
12:05 pm - 2:13 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
2h 08mnonstop
United Airlines Logo
2:55 pm - 5:19 pmSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
2h 24mnonstop
$292United Airlines
Sun, Nov 8 - Wed, Nov 11
United Airlines Logo
7:40 am - 9:45 amIAH  Houston George Bush Intcntl-STL Lambert-St Louis
2h 05mnonstop
United Airlines Logo
6:00 am - 8:21 amSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
2h 21mnonstop
$292United Airlines
Fri, Dec 11 - Sun, Dec 13
United Airlines Logo
8:07 pm - 10:06 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
1h 59mnonstop
United Airlines Logo
8:50 am - 11:08 amSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
2h 18mnonstop
$292United Airlines
Thu, Feb 18 - Sun, Feb 21

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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
Nov 6
IAH9:14 pmHouston George Bush Intcntl
26h 02m
2 stops
STL11:16 pmLambert-St Louis
Nov 13
STL6:34 pmLambert-St Louis
26h 21m
2 stops
IAH8:55 pmHouston George Bush Intcntl
$249
Frontier
Oct 30
IAH6:05 amHouston George Bush Intcntl
11h 35m
1 stop
STL5:40 pmLambert-St Louis
Nov 2
STL6:44 pmLambert-St Louis
20h 46m
2 stops
IAH3:30 pmHouston George Bush Intcntl
$255
Frontier
Nov 24
IAH3:52 pmHouston George Bush Intcntl
8h 07m
1 stop
STL11:59 pmLambert-St Louis
Nov 27
STL1:20 pmLambert-St Louis
11h 05m
1 stop
IAH12:25 amHouston George Bush Intcntl
$256

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

Our best Delta deals on Houston George Bush Intcntl Airport to St. Louis flight tickets
Delta
Dec 18
IAH6:28 pmHouston George Bush Intcntl
5h 37m
1 stop
STL12:05 amLambert-St Louis
Dec 21
STL6:00 amLambert-St Louis
7h 33m
1 stop
IAH1:33 pmHouston George Bush Intcntl
$276
Delta
Dec 8
IAH6:28 pmHouston George Bush Intcntl
5h 37m
1 stop
STL12:05 amLambert-St Louis
Dec 9
STL2:33 pmLambert-St Louis
7h 33m
1 stop
IAH10:06 pmHouston George Bush Intcntl
$285
Delta
Nov 11
IAH8:05 amHouston George Bush Intcntl
5h 18m
1 stop
STL1:23 pmLambert-St Louis
Nov 13
STL7:18 pmLambert-St Louis
4h 41m
1 stop
IAH11:59 pmHouston George Bush Intcntl
$314

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

Fri 11/6

9:14 pm-11:16 pm

2 stops26h 02m

Lambert-St Louis

Fri 11/13

6:34 pm-8:55 pm

2 stops26h 21m

$249

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Fri 10/30

6:05 am-5:40 pm

1 stop11h 35m

Lambert-St Louis

Mon 11/2

6:44 pm-3:30 pm

2 stops20h 46m

$255

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Sat 12/5

9:41 am-12:12 am

2 stops14h 31m

Lambert-St Louis

Mon 12/7

12:02 pm-8:46 am

1 stop20h 44m

$256

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Tue 11/24

3:52 pm-11:59 pm

1 stop8h 07m

Lambert-St Louis

Fri 11/27

1:20 pm-12:25 am

1 stop11h 05m

$256

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Thu 11/19

2:37 pm-8:04 pm

1 stop5h 27m

Lambert-St Louis

Wed 11/25

5:29 pm-12:09 am

1 stop6h 40m

$276

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Fri 12/18

6:28 pm-12:05 am

1 stop5h 37m

Lambert-St Louis

Mon 12/21

6:00 am-1:33 pm

1 stop7h 33m

$276

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Fri 12/18

4:29 pm-12:05 am

1 stop7h 36m

Lambert-St Louis

Mon 12/21

7:15 pm-11:59 pm

1 stop4h 44m

$276

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Sun 11/8

12:05 pm-2:13 pm

Nonstop2h 08m

Lambert-St Louis

Wed 11/11

2:55 pm-5:19 pm

Nonstop2h 24m

$292

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Fri 12/11

7:40 am-9:45 am

Nonstop2h 05m

Lambert-St Louis

Sun 12/13

6:00 am-8:21 am

Nonstop2h 21m

$292
Quickest round-trip

HoustonSt. Louis

IAH Houston George Bush Intcntl - STL Lambert-St Louis

IAHSTL

Houston George Bush Intcntl

Thu 2/18

8:07 pm-10:06 pm

Nonstop1h 59m

Lambert-St Louis

Sun 2/21

8:50 am-11:08 am

Nonstop2h 18m

$292

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 $292 to $590.
The lowest price recently found on this route was $249.

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

In general, January 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 $356. 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 $420.

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 $331. 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 $441. 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 $423 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 $554 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.

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

As of October 2026, prices for Houston George Bush Intcntl Airport to St. Louis flights are approximately 53% 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

$45

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 $45. The best round-trip flight deal from Houston George Bush Intcntl Airport to St. Louis found on momondo in the last 72 hours is $249.
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 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 57m 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 $128Free CancellationRating
5.5
2,539 reviews
Search Frontier flights
United AirlinesPriceFrom $251Free CancellationRating
7.4
10,362 reviews
Search United Airlines flights

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

    United Airlines operates around 32 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 $551, 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 10,362 reviews.

Traveling to a place near St. Louis?

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

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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