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Cheap flights from St. Louis to Houston from $70

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Houston departing on 4/26. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:29 pm - 8:51 am
STL
-
IAH
14h 22m
1 stop
Multiple Airlines Logo
4:30 pm - 11:25 pm
IAH
-
STL
6h 55m
1 stop
$280Multiple Airlines
jeu., avr. 9 - sam., avr. 11
Frontier Logo
8:08 pm - 10:42 am
STL
-
IAH
14h 34m
1 stop
Frontier Logo
5:34 pm - 7:23 pm
IAH
-
STL
25h 49m
1 stop
$281Frontier
lun., août 3 - dim., août 9
Frontier Logo
11:25 am - 5:19 pm
STL
-
IAH
5h 54m
1 stop
Frontier Logo
1:58 pm - 6:50 am
IAH
-
STL
16h 52m
2 stops
$282Frontier
jeu., avr. 16 - dim., avr. 19
Frontier Logo
3:33 pm - 8:50 am
STL
-
IAH
17h 17m
2 stops
Frontier Logo
6:00 am - 8:55 am
IAH
-
STL
26h 55m
1 stop
$283Frontier
jeu., mai 7 - dim., mai 10
Frontier Logo
6:33 pm - 7:34 am
STL
-
IAH
13h 01m
1 stop
Frontier Logo
9:00 pm - 7:23 pm
IAH
-
STL
22h 23m
2 stops
$286Frontier
jeu., mai 28 - dim., mai 31
Multiple Airlines Logo
8:06 pm - 11:42 am
STL
-
IAH
15h 36m
1 stop
Multiple Airlines Logo
1:58 pm - 11:19 pm
IAH
-
STL
9h 21m
1 stop
$287Multiple Airlines
ven., avr. 17 - lun., avr. 20
Multiple Airlines Logo
8:23 pm - 12:53 pm
STL
-
IAH
16h 30m
2 stops
Multiple Airlines Logo
10:44 am - 7:32 pm
IAH
-
STL
8h 48m
1 stop
$288Multiple Airlines
ven., mai 1 - lun., mai 4
Frontier Logo
5:27 pm - 10:50 pm
STL
-
IAH
5h 23m
1 stop
Frontier Logo
6:00 am - 7:23 pm
IAH
-
STL
37h 23m
2 stops
$289Frontier
mer., mai 6 - dim., mai 10
Frontier Logo
12:17 pm - 9:14 pm
STL
-
IAH
8h 57m
1 stop
Frontier Logo
6:45 am - 7:21 pm
IAH
-
STL
12h 36m
1 stop
$290Frontier
lun., avr. 6 - jeu., avr. 16
Frontier Logo
4:59 pm - 7:02 am
STL
-
IAH
14h 03m
1 stop
Frontier Logo
9:17 pm - 12:19 pm
IAH
-
STL
15h 02m
1 stop
$291Frontier
ven., avr. 10 - sam., avr. 11

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

Our best Frontier deals on St. Louis to Houston George Bush Intcntl Airport flight tickets
Frontier
Aug 3
STL8:08 pmLambert-St Louis
14h 34m
1 stop
IAH10:42 amHouston George Bush Intcntl
Aug 9
IAH5:34 pmHouston George Bush Intcntl
25h 49m
1 stop
STL7:23 pmLambert-St Louis
$281
Frontier
Apr 16
STL11:25 amLambert-St Louis
5h 54m
1 stop
IAH5:19 pmHouston George Bush Intcntl
Apr 19
IAH1:58 pmHouston George Bush Intcntl
16h 52m
2 stops
STL6:50 amLambert-St Louis
$282
Frontier
May 7
STL3:33 pmLambert-St Louis
17h 17m
2 stops
IAH8:50 amHouston George Bush Intcntl
May 10
IAH6:00 amHouston George Bush Intcntl
26h 55m
1 stop
STL8:55 amLambert-St Louis
$283

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

Our best United Airlines deals on St. Louis to Houston George Bush Intcntl Airport flight tickets
United Airlines
Apr 21
STL6:00 amLambert-St Louis
2h 19m
IAH8:19 amHouston George Bush Intcntl
Apr 21
IAH8:20 pmHouston George Bush Intcntl
2h 08m
STL10:28 pmLambert-St Louis
$306
United Airlines
May 19
STL6:00 amLambert-St Louis
2h 18m
IAH8:18 amHouston George Bush Intcntl
May 20
IAH7:25 amHouston George Bush Intcntl
2h 05m
STL9:30 amLambert-St Louis
$311
United Airlines
Apr 23
STL6:00 amLambert-St Louis
2h 19m
IAH8:19 amHouston George Bush Intcntl
Apr 27
IAH8:20 pmHouston George Bush Intcntl
2h 08m
STL10:28 pmLambert-St Louis
$317

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Houston George Bush Intcntl Airport 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 mars 28, 2026.
Use the filters below to find and compare flights from St. Louis to Houston George Bush Intcntl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

jeu. 4/9

6:29 pm-8:51 am

1 stop14h 22m

Houston George Bush Intcntl

sam. 4/11

4:30 pm-11:25 pm

1 stop6h 55m

$280

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

lun. 8/3

8:08 pm-10:42 am

1 stop14h 34m

Houston George Bush Intcntl

dim. 8/9

5:34 pm-7:23 pm

1 stop25h 49m

$281

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

jeu. 4/16

11:25 am-5:19 pm

1 stop5h 54m

Houston George Bush Intcntl

dim. 4/19

1:58 pm-6:50 am

2 stops16h 52m

$282

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

jeu. 5/7

3:33 pm-8:50 am

2 stops17h 17m

Houston George Bush Intcntl

dim. 5/10

6:00 am-8:55 am

1 stop26h 55m

$283

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

jeu. 5/28

6:33 pm-7:34 am

1 stop13h 01m

Houston George Bush Intcntl

dim. 5/31

9:00 pm-7:23 pm

2 stops22h 23m

$286

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

ven. 4/17

8:06 pm-11:42 am

1 stop15h 36m

Houston George Bush Intcntl

lun. 4/20

1:58 pm-11:19 pm

1 stop9h 21m

$287

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

ven. 5/1

8:23 pm-12:53 pm

2 stops16h 30m

Houston George Bush Intcntl

lun. 5/4

10:44 am-7:32 pm

1 stop8h 48m

$288

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

mer. 5/6

5:27 pm-10:50 pm

1 stop5h 23m

Houston George Bush Intcntl

dim. 5/10

6:00 am-7:23 pm

2 stops37h 23m

$289

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

lun. 4/6

12:17 pm-9:14 pm

1 stop8h 57m

Houston George Bush Intcntl

jeu. 4/16

6:45 am-7:21 pm

1 stop12h 36m

$290

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

ven. 4/10

4:59 pm-7:02 am

1 stop14h 03m

Houston George Bush Intcntl

sam. 4/11

9:17 pm-12:19 pm

1 stop15h 02m

$291

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 Houston from

How to get the cheapest flight ticket from St. Louis to Houston George Bush Intcntl Airport

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 St. Louis and Houston George Bush Intcntl Airport?

What is the cheapest month to fly to Houston George Bush Intcntl Airport?

The month of January is, on average, the cheapest month to fly to Houston George Bush Intcntl Airport from St. Louis, with most prices found around $236. If you are unable to visit Houston George Bush Intcntl Airport during the month of January, then departing from St. Louis during the month August is also very affordable. Most momondo users find prices during this month for around $303.

What is the cheapest day to depart on your flight to Houston George Bush Intcntl Airport?

The cheapest day to depart from St. Louis to Houston George Bush Intcntl Airport is on a Friday. Travelers who choose to depart for Houston George Bush Intcntl Airport on a Friday will often find tickets for as low as $489. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Houston George Bush Intcntl Airport on Monday is $601.

What is the cheapest time of day to depart on your flight to Houston George Bush Intcntl Airport?

Our data shows that the cheapest St. Louis to Houston George Bush Intcntl Airport flights are usually those with departure times in the morning. Our users have found flights to Houston George Bush Intcntl Airport in the morning for as low as $555. Try not to purchase tickets at noon because they tend to be around $730. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

How far in advance should I book a flight to Houston George Bush Intcntl Airport?

You are more likely to see cheaper flights to Houston George Bush Intcntl Airport from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Houston George Bush Intcntl Airport for around $376 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Houston George Bush Intcntl Airport from St. Louis for as low as $286 on momondo.

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

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

No. A direct flight is the cheapest option for a flight between St. Louis to Houston George Bush Intcntl Airport.

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

As of March 2026, prices for St. Louis to Houston George Bush Intcntl Airport flights are approximately 64% more expensive when compared to flights at the same time last year.

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

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

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

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

Best Price Found

$197

Fastest flight time

2h 15m

Direct flights

Every day
The best one-way flight to Houston George Bush Intcntl Airport from St. Louis in the past 72 hours is $197. The best round-trip flight deal from St. Louis to Houston George Bush Intcntl Airport found on momondo in the last 72 hours is $366.
The fastest flight from St. Louis to Houston George Bush Intcntl Airport takes 2h 15m
Direct flights go from St. Louis to Houston George Bush Intcntl Airport every day.
Search flight deals

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

    Lambert-St Louis and Houston George Bush Intcntl are 664.5 mi apart from one another. In terms of flight time, this usually takes a little over 2h 15m.

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

    Prices for flights from Lambert-St Louis Airport to Houston George Bush Intcntl Airport are refreshed on a daily basis.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Houston George Bush Intcntl Airport.

  • What documentation or ID do you need to fly to Houston George Bush Intcntl Airport?

    The necessary travel and health documents for your Houston George Bush Intcntl 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.

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

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

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

Compare and see reviews for airlines that fly from St. Louis to Houston George Bush Intcntl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $153Free CancellationRating
5.7
3,013 reviews
Search Frontier flights
American AirlinesPriceFrom $167Free CancellationRating
7.1
11,514 reviews
Search American Airlines flights
United AirlinesPriceFrom $215Free CancellationRating
7.4
9,500 reviews
Search United Airlines flights

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

    United Airlines flies from St. Louis to Houston George Bush Intcntl Airport around 5 times per week, with 9,500 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from St. Louis to Houston George Bush Intcntl Airport in the last 72 hours was $215 (round-trip), much lower than the average airfare cost of $407 for United Airlines flights on this route.

Traveling to a place near Houston?

Book flights to Houston if you plan to visit one of these locations
Katy
The Woodlands
Conroe
Humble
Cypress
Spring
Montgomery
Jersey Village
Tomball
Livingston

Why use momondo?

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

It is quick and easy to find St. Louis to Houston flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Houston that suits you.

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

Yes. momondo enables you to select and highlight flights to Houston from St. Louis with this policy.

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

Once all potential St. Louis to Houston flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of St. Louis to Houston flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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