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Cheap flights from St. Louis to Houston from $69

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 5/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from St. Louis to Houston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
5:40 am - 7:50 am
STL
-
HOU
2h 10mnonstop
Southwest Logo
7:35 am - 9:35 am
HOU
-
STL
2h 00mnonstop
$277Southwest
Thu, Apr 9 - Sat, Apr 11
United Airlines Logo
6:00 am - 8:19 am
STL
-
IAH
2h 19mnonstop
United Airlines Logo
8:20 pm - 10:28 pm
IAH
-
STL
2h 08mnonstop
$277United Airlines
Thu, Apr 9 - Sat, Apr 11
Frontier Logo
8:16 pm - 12:48 am
STL
-
IAH
28h 32m
1 stop
Frontier Logo
10:33 pm - 9:48 am
IAH
-
STL
11h 15m
2 stops
$278Frontier
Fri, Apr 3 - Sun, Apr 5
Southwest Logo
10:25 am - 2:55 pm
STL
-
HOU
4h 30m
1 stop
Southwest Logo
10:35 am - 2:55 pm
HOU
-
STL
4h 20m
1 stop
$278Southwest
Wed, Apr 15 - Thu, Apr 16
Frontier Logo
8:08 pm - 12:44 am
STL
-
IAH
28h 36m
1 stop
Frontier Logo
5:34 pm - 7:23 pm
IAH
-
STL
25h 49m
1 stop
$281Frontier
Mon, Aug 3 - Sun, Aug 9
Southwest Logo
5:45 am - 11:45 am
STL
-
HOU
6h 00m
1 stop
Southwest Logo
3:40 pm - 8:00 pm
HOU
-
STL
4h 20m
1 stop
$282Southwest
Mon, Apr 27 - Tue, Apr 28
Multiple Airlines Logo
8:06 pm - 11:11 am
STL
-
IAH
15h 05m
2 stops
Multiple Airlines Logo
6:45 am - 7:21 pm
IAH
-
STL
12h 36m
1 stop
$283Multiple Airlines
Thu, Apr 23 - Sun, Apr 26
Southwest Logo
5:15 am - 7:30 am
STL
-
HOU
2h 15mnonstop
Southwest Logo
3:25 pm - 7:45 pm
HOU
-
STL
4h 20m
1 stop
$283Southwest
Sat, Apr 11 - Sat, Apr 18
Frontier Logo
4:54 pm - 7:02 am
STL
-
IAH
14h 08m
1 stop
Frontier Logo
6:45 am - 9:48 am
IAH
-
STL
27h 03m
1 stop
$286Frontier
Thu, Apr 2 - Sun, Apr 5
Southwest Logo
7:15 pm - 9:25 pm
STL
-
HOU
2h 10mnonstop
Southwest Logo
6:30 pm - 12:15 am
HOU
-
STL
5h 45m
1 stop
$287Southwest
Fri, Apr 17 - Mon, Apr 20

Southwest flights from St. Louis to Houston

Our best Southwest deals on St. Louis to Houston flight tickets
Southwest
Apr 9
STL7:15 pmLambert-St Louis
2h 10m
HOU9:25 pmHouston Hobby
Apr 13
HOU9:55 pmHouston Hobby
2h 00m
STL11:55 pmLambert-St Louis
$277
Southwest
Apr 15
STL10:25 amLambert-St Louis
4h 30m
1 stop
HOU2:55 pmHouston Hobby
Apr 16
HOU10:35 amHouston Hobby
4h 20m
1 stop
STL2:55 pmLambert-St Louis
$278
Southwest
Apr 27
STL5:45 amLambert-St Louis
6h 00m
1 stop
HOU11:45 amHouston Hobby
Apr 28
HOU3:40 pmHouston Hobby
4h 20m
1 stop
STL8:00 pmLambert-St Louis
$282

Delta flights from St. Louis to Houston

Our best Delta deals on St. Louis to Houston flight tickets
Delta
Apr 10
STL5:25 pmLambert-St Louis
6h 03m
1 stop
IAH11:28 pmHouston George Bush Intcntl
Apr 11
IAH6:53 pmHouston George Bush Intcntl
5h 05m
1 stop
STL11:58 pmLambert-St Louis
$297
Delta
May 3
STL6:00 amLambert-St Louis
6h 40m
1 stop
HOU12:40 pmHouston Hobby
May 16
HOU5:04 pmHouston Hobby
6h 55m
1 stop
STL11:59 pmLambert-St Louis
$366
Delta
May 19
STL9:15 amLambert-St Louis
6h 54m
1 stop
HOU4:09 pmHouston Hobby
May 20
HOU5:02 pmHouston Hobby
6h 57m
1 stop
STL11:59 pmLambert-St Louis
$385

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 March 23, 2026.
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

Cheapest round-trip
Quickest round-trip

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Thu 4/9

5:40 am-7:50 am

Nonstop2h 10m

Houston Hobby

Sat 4/11

7:35 am-9:35 am

Nonstop2h 00m

$277

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Thu 4/9

6:00 am-8:19 am

Nonstop2h 19m

Houston George Bush Intcntl

Sat 4/11

8:20 pm-10:28 pm

Nonstop2h 08m

$277

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Fri 4/3

8:16 pm-12:48 am

1 stop28h 32m

Houston George Bush Intcntl

Sun 4/5

10:33 pm-9:48 am

2 stops11h 15m

$278

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Wed 4/15

10:25 am-2:55 pm

1 stop4h 30m

Houston Hobby

Thu 4/16

10:35 am-2:55 pm

1 stop4h 20m

$278

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Mon 8/3

8:08 pm-12:44 am

1 stop28h 36m

Houston George Bush Intcntl

Sun 8/9

5:34 pm-7:23 pm

1 stop25h 49m

$281

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Mon 4/27

5:45 am-11:45 am

1 stop6h 00m

Houston Hobby

Tue 4/28

3:40 pm-8:00 pm

1 stop4h 20m

$282

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Thu 4/23

8:06 pm-11:11 am

2 stops15h 05m

Houston George Bush Intcntl

Sun 4/26

6:45 am-7:21 pm

1 stop12h 36m

$283

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Sat 4/11

5:15 am-7:30 am

Nonstop2h 15m

Houston Hobby

Sat 4/18

3:25 pm-7:45 pm

1 stop4h 20m

$283

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Thu 4/2

4:54 pm-7:02 am

1 stop14h 08m

Houston George Bush Intcntl

Sun 4/5

6:45 am-9:48 am

1 stop27h 03m

$286

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Fri 4/17

7:15 pm-9:25 pm

Nonstop2h 10m

Houston Hobby

Mon 4/20

6:30 pm-12:15 am

1 stop5h 45m

$287

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 typical price of a round-trip flight between St. Louis and Houston?

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 $292.

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 Thursday. momondo users have found tickets for Thursday departures for as low as $373. 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 $483.

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 $381. Try not to purchase tickets in the afternoon because they tend to be around $597. 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 George Bush Intcntl 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 $342 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 $245 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 05m

Direct flights

Mon, Wed, Thu, Fri, Sat and Sun

Airports in Houston

2 airports
The fastest flight from St. Louis to Houston takes 2h 05m
Direct flights go from St. Louis to Houston on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There are 2 airports in Houston. From St. Louis there are direct flights to Houston George Bush Intcntl (IAH), Houston Hobby (HOU).
Search flight deals

  • 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 05m 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
Spirit AirlinesPriceFrom $108Free CancellationRating
6.3
8,538 reviews
Search Spirit Airlines flights
FrontierPriceFrom $128Free CancellationRating
5.7
3,019 reviews
Search Frontier flights
United AirlinesPriceFrom $131Free CancellationRating
7.4
9,462 reviews
Search United Airlines flights
American AirlinesPriceFrom $167Free CancellationRating
7.1
11,488 reviews
Search American Airlines flights
SouthwestPriceFrom $179Free CancellationRating
8.0
4,324 reviews
Search Southwest 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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