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Cheap flights from St. Louis to Houston 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 St. Louis to Houston departing on 11/20. 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
12:04 pm - 10:50 pmSTL-IAH
10h 46m1 stop
Frontier Logo
10:31 pm - 11:22 amIAH-STL
12h 51m1 stop
$143Frontier
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Thu, Dec 4 - Sun, Dec 7
Frontier Logo
10:25 am - 9:33 amSTL-IAH
23h 08m1 stop
Frontier Logo
2:09 pm - 9:07 amIAH-STL
18h 58m1 stop
$144Frontier
Find Deal
Mon, Nov 10 - Wed, Nov 12
Multiple Airlines Logo
5:11 pm - 8:54 amSTL-IAH
15h 43m1 stop
Multiple Airlines Logo
7:00 am - 10:33 pmIAH-STL
15h 33m2 stops
$150Multiple Airlines
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Wed, Jan 28 - Wed, Feb 4
Multiple Airlines Logo
7:43 pm - 10:37 amSTL-IAH
14h 54m1 stop
Multiple Airlines Logo
7:00 am - 10:33 pmIAH-STL
15h 33m1 stop
$153Multiple Airlines
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Wed, Jan 7 - Sun, Jan 11
American Airlines Logo
6:44 pm - 11:46 pmSTL-HOU
5h 02m1 stop
American Airlines Logo
5:40 am - 3:00 pmHOU-STL
9h 20m1 stop
$294American Airlines
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Tue, Dec 30 - Thu, Jan 1
Southwest Logo
5:25 am - 7:35 amSTL-HOU
2h 10mnonstop
Southwest Logo
9:40 pm - 11:35 pmHOU-STL
1h 55mnonstop
$313Southwest
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Mon, Dec 22 - Tue, Dec 30
Southwest Logo
10:15 am - 1:55 pmSTL-HOU
3h 40m1 stop
Southwest Logo
7:00 pm - 9:00 pmHOU-STL
2h 00mnonstop
$319Southwest
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Wed, Dec 3 - Tue, Dec 9
American Airlines Logo
9:36 am - 7:44 pmSTL-HOU
10h 08m1 stop
American Airlines Logo
5:40 am - 10:50 amHOU-STL
5h 10m1 stop
$336American Airlines
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Thu, Jan 1 - Sun, Jan 4
Delta Logo
5:12 pm - 10:33 pmSTL-HOU
5h 21m1 stop
Delta Logo
6:47 pm - 11:42 pmHOU-STL
4h 55m1 stop
$349Delta
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Sat, Dec 6 - Mon, Dec 8
Delta Logo
6:00 am - 1:28 pmSTL-HOU
7h 28m1 stop
Delta Logo
6:47 pm - 11:42 pmHOU-STL
4h 55m1 stop
$374Delta
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Thu, Dec 4 - Sun, Dec 7

Southwest flights from St. Louis to Houston

Our best Southwest deals on St. Louis to Houston flight tickets
Southwest
Dec 22
STL5:25 amLambert-St Louis
2h 10m
HOU7:35 amHouston Hobby
Dec 30
HOU9:40 pmHouston Hobby
1h 55m
STL11:35 pmLambert-St Louis
$313
Find similar
Southwest
Dec 3
STL10:15 amLambert-St Louis
3h 40m
1 stop
HOU1:55 pmHouston Hobby
Dec 9
HOU7:00 pmHouston Hobby
2h 00m
STL9:00 pmLambert-St Louis
$319
Find similar
Southwest
Dec 22
STL7:25 pmLambert-St Louis
2h 10m
HOU9:35 pmHouston Hobby
Dec 30
HOU6:30 pmHouston Hobby
3h 30m
1 stop
STL10:00 pmLambert-St Louis
$323
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Delta flights from St. Louis to Houston

Our best Delta deals on St. Louis to Houston flight tickets
Delta
Dec 6
STL5:12 pmLambert-St Louis
5h 21m
1 stop
HOU10:33 pmHouston Hobby
Dec 8
HOU6:47 pmHouston Hobby
4h 55m
1 stop
STL11:42 pmLambert-St Louis
$349
Find similar
Delta
Dec 4
STL6:00 amLambert-St Louis
7h 28m
1 stop
HOU1:28 pmHouston Hobby
Dec 7
HOU6:47 pmHouston Hobby
4h 55m
1 stop
STL11:42 pmLambert-St Louis
$374
Find similar
Delta
Nov 19
STL5:17 pmLambert-St Louis
5h 50m
1 stop
HOU11:07 pmHouston Hobby
Dec 2
HOU2:32 pmHouston Hobby
7h 25m
1 stop
STL9:57 pmLambert-St Louis
$401
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momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Houston 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 October 30, 2025.
Use the filters below to find and compare flights from St. Louis to Houston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Thu 12/4

12:04 pm-10:50 pm

1 stop10h 46m

Houston George Bush Intcntl

Sun 12/7

10:31 pm-11:22 am

1 stop12h 51m

$143

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Mon 11/10

10:25 am-9:33 am

1 stop23h 08m

Houston George Bush Intcntl

Wed 11/12

2:09 pm-9:07 am

1 stop18h 58m

$144

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Wed 1/28

5:11 pm-8:54 am

1 stop15h 43m

Houston George Bush Intcntl

Wed 2/4

7:00 am-10:33 pm

2 stops15h 33m

$150

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Wed 1/7

7:43 pm-10:37 am

1 stop14h 54m

Houston George Bush Intcntl

Sun 1/11

7:00 am-10:33 pm

1 stop15h 33m

$153

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Tue 12/30

6:44 pm-11:46 pm

1 stop5h 02m

Houston Hobby

Thu 1/1

5:40 am-3:00 pm

1 stop9h 20m

$294

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Mon 12/22

5:25 am-7:35 am

Nonstop2h 10m

Houston Hobby

Tue 12/30

9:40 pm-11:35 pm

Nonstop1h 55m

$313

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Wed 12/3

10:15 am-1:55 pm

1 stop3h 40m

Houston Hobby

Tue 12/9

7:00 pm-9:00 pm

Nonstop2h 00m

$319

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Thu 1/1

9:36 am-7:44 pm

1 stop10h 08m

Houston Hobby

Sun 1/4

5:40 am-10:50 am

1 stop5h 10m

$336

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Sat 12/6

5:12 pm-10:33 pm

1 stop5h 21m

Houston Hobby

Mon 12/8

6:47 pm-11:42 pm

1 stop4h 55m

$349

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Thu 12/4

6:00 am-1:28 pm

1 stop7h 28m

Houston Hobby

Sun 12/7

6:47 pm-11:42 pm

1 stop4h 55m

$374

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

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 Houston?

The month of September is, on average, the cheapest month to fly to Houston from St. Louis, with most prices found around $251. The month of August is another great option to travel to Houston, with average flight prices from St. Louis averaging around $287.

What is the cheapest day to depart on your flight to Houston?

On average, the least expensive day to fly to Houston from St. Louis is on a Monday. momondo users have found tickets for Monday departures for as low as $347. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Houston on Sunday is $496.

What is the cheapest time of day to depart on your flight to Houston?

Our data shows that the cheapest St. Louis to Houston flights are usually those with departure times in the evening. Our users have found flights to Houston in the evening for as low as $369. Try not to purchase tickets in the afternoon because they tend to be around $613. 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 flight route?

Fly from Lambert-St Louis to Houston Hobby for the best Lambert-St Louis - Houston flight prices

How far in advance should I book a flight to Houston?

You are more likely to see cheaper flights to Houston from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Houston for around $343 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Houston from St. Louis for as low as $266 on momondo.

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

There are 4 cabin classes available to choose from on Lambert-St Louis to Houston flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap St. Louis to Houston flight deals and tips

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

Fastest flight time

2h 10m

Direct flights

Every day

Airports in Houston

2 airports
The fastest flight from St. Louis to Houston takes 2h 10m
Direct flights go from St. Louis to Houston every day.
There are 2 airports near Houston: Houston George Bush Intcntl (IAH), Houston Hobby (HOU)
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  • How far is Lambert-St Louis to Houston by plane?

    A flight from Lambert-St Louis to Houston will travel around 679.6 mi. 2h 10m is a normal flight duration for this route.

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

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

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

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

    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.

  • What documentation or ID do you need to fly to Houston?

    The necessary travel and health documents for your Houston 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 St. Louis to Houston

Compare and see reviews for airlines that fly from St. Louis to Houston with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $112Free CancellationRating
5.8
3,122 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $127Free CancellationRating
6.3
8,116 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $167Free CancellationRating
7.2
11,035 reviews
Search American Airlines flights
SouthwestPriceFrom $177Free CancellationRating
8.0
4,243 reviews
Search Southwest flights
United AirlinesPriceFrom $177Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights

Why use momondo?

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

Finding the right flight to Houston from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Houston quick and easy, saving you time and money.

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

All flight searches from St. Louis to Houston on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for St. Louis to Houston flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Houston from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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