Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Houston from $63

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 6/8. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Houston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:38 pm - 10:42 am
STL
-
IAH
15h 04m
1 stop
Frontier Logo
8:53 pm - 6:51 pm
IAH
-
STL
21h 58m
1 stop
$250Frontier
Sat, Jun 27 - Tue, Jun 30
Frontier Logo
5:06 pm - 7:23 am
STL
-
IAH
14h 17m
1 stop
Frontier Logo
8:55 pm - 5:37 pm
IAH
-
STL
20h 42m
1 stop
$253Frontier
Fri, Jul 3 - Mon, Jul 6
Frontier Logo
7:38 pm - 9:13 pm
STL
-
IAH
25h 35m
1 stop
Frontier Logo
7:24 pm - 11:49 pm
IAH
-
STL
28h 25m
1 stop
$254Frontier
Thu, Jun 11 - Sat, Jun 13
Frontier Logo
5:27 pm - 10:07 am
STL
-
IAH
16h 40m
1 stop
Frontier Logo
10:05 pm - 5:30 pm
IAH
-
STL
19h 25m
2 stops
$257Frontier
Fri, Jun 5 - Mon, Jun 8
Frontier Logo
5:27 pm - 7:34 am
STL
-
IAH
14h 07m
1 stop
Frontier Logo
10:51 am - 8:55 am
IAH
-
STL
22h 04m
2 stops
$258Frontier
Mon, Jun 1 - Fri, Jun 5
Frontier Logo
6:33 pm - 7:20 am
STL
-
IAH
12h 47m
1 stop
Frontier Logo
8:55 pm - 8:57 am
IAH
-
STL
12h 02m
1 stop
$259Frontier
Sun, Jul 5 - Fri, Jul 10
Frontier Logo
8:08 pm - 10:44 am
STL
-
IAH
14h 36m
1 stop
Frontier Logo
8:50 pm - 8:11 pm
IAH
-
STL
23h 21m
1 stop
$260Frontier
Fri, May 29 - Sun, May 31
Frontier Logo
5:06 pm - 7:23 am
STL
-
IAH
14h 17m
1 stop
Frontier Logo
9:58 pm - 8:52 am
IAH
-
STL
34h 54m
2 stops
$261Frontier
Fri, Jun 12 - Mon, Jun 15
Frontier Logo
5:27 pm - 7:34 am
STL
-
IAH
14h 07m
1 stop
Frontier Logo
9:00 pm - 2:31 pm
IAH
-
STL
17h 31m
2 stops
$262Frontier
Mon, Jun 1 - Wed, Jun 3
Frontier Logo
5:27 pm - 7:34 am
STL
-
IAH
14h 07m
1 stop
Frontier Logo
5:40 pm - 8:55 am
IAH
-
STL
15h 15m
2 stops
$264Frontier
Mon, Jun 1 - Sun, Jun 7

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
Jun 27
STL7:38 pmLambert-St Louis
15h 04m
1 stop
IAH10:42 amHouston George Bush Intcntl
Jun 30
IAH8:53 pmHouston George Bush Intcntl
21h 58m
1 stop
STL6:51 pmLambert-St Louis
$250
Frontier
Jul 3
STL5:06 pmLambert-St Louis
14h 17m
1 stop
IAH7:23 amHouston George Bush Intcntl
Jul 6
IAH8:55 pmHouston George Bush Intcntl
20h 42m
1 stop
STL5:37 pmLambert-St Louis
$253
Frontier
Jun 11
STL7:38 pmLambert-St Louis
25h 35m
1 stop
IAH9:13 pmHouston George Bush Intcntl
Jun 13
IAH7:24 pmHouston George Bush Intcntl
28h 25m
1 stop
STL11:49 pmLambert-St Louis
$254

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
Jun 1
STL8:35 amLambert-St Louis
2h 17m
IAH10:52 amHouston George Bush Intcntl
Jun 1
IAH8:30 pmHouston George Bush Intcntl
2h 15m
STL10:45 pmLambert-St Louis
$291
United Airlines
Jun 2
STL6:14 amLambert-St Louis
2h 17m
IAH8:31 amHouston George Bush Intcntl
Jun 9
IAH8:30 pmHouston George Bush Intcntl
2h 15m
STL10:45 pmLambert-St Louis
$304
United Airlines
Jun 1
STL8:35 amLambert-St Louis
2h 17m
IAH10:52 amHouston George Bush Intcntl
Jun 2
IAH8:00 amHouston George Bush Intcntl
2h 07m
STL10:07 amLambert-St Louis
$311

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 May 12, 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

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Sat 6/27

7:38 pm-10:42 am

1 stop15h 04m

Houston George Bush Intcntl

Tue 6/30

8:53 pm-6:51 pm

1 stop21h 58m

$250

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Fri 7/3

5:06 pm-7:23 am

1 stop14h 17m

Houston George Bush Intcntl

Mon 7/6

8:55 pm-5:37 pm

1 stop20h 42m

$253

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Thu 6/11

7:38 pm-9:13 pm

1 stop25h 35m

Houston George Bush Intcntl

Sat 6/13

7:24 pm-11:49 pm

1 stop28h 25m

$254

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Fri 6/5

5:27 pm-10:07 am

1 stop16h 40m

Houston George Bush Intcntl

Mon 6/8

10:05 pm-5:30 pm

2 stops19h 25m

$257

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Mon 6/1

5:27 pm-7:34 am

1 stop14h 07m

Houston George Bush Intcntl

Fri 6/5

10:51 am-8:55 am

2 stops22h 04m

$258
Quickest round-trip

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Sun 7/5

6:33 pm-7:20 am

1 stop12h 47m

Houston George Bush Intcntl

Fri 7/10

8:55 pm-8:57 am

1 stop12h 02m

$259

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Fri 5/29

8:08 pm-10:44 am

1 stop14h 36m

Houston George Bush Intcntl

Sun 5/31

8:50 pm-8:11 pm

1 stop23h 21m

$260

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Fri 6/12

5:06 pm-7:23 am

1 stop14h 17m

Houston George Bush Intcntl

Mon 6/15

9:58 pm-8:52 am

2 stops34h 54m

$261

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Mon 6/1

5:27 pm-7:34 am

1 stop14h 07m

Houston George Bush Intcntl

Wed 6/3

9:00 pm-2:31 pm

2 stops17h 31m

$262

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Mon 6/1

5:27 pm-7:34 am

1 stop14h 07m

Houston George Bush Intcntl

Sun 6/7

5:40 pm-8:55 am

2 stops15h 15m

$264

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $305.

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 $491. 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 $558. Try not to purchase tickets in the afternoon because they tend to be around $646. 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 from St. Louis 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 $388 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 $281 on momondo.

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 May 2026, prices for St. Louis to Houston George Bush Intcntl Airport flights are approximately 39% cheaper 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

$238

Fastest flight time

2h 12m

Direct flights

Every day
The best one-way flight to Houston George Bush Intcntl Airport from St. Louis in the past 72 hours is $238. The best round-trip flight deal from St. Louis to Houston George Bush Intcntl Airport found on momondo in the last 72 hours is $436.
The fastest flight from St. Louis to Houston George Bush Intcntl Airport takes 2h 12m
Direct flights go from St. Louis to Houston George Bush Intcntl Airport every day.
Search flight deals

Frequently asked questions about flying from St. Louis to Houston George Bush Intcntl Airport

  • 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 12m.

  • 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
5.6
2,951 reviews
Search Frontier flights
American AirlinesPriceFrom $167Free CancellationRating
7.1
11,662 reviews
Search American Airlines flights
United AirlinesPriceFrom $215Free CancellationRating
7.4
9,701 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 19 times per week, with 9,701 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 $413 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
Spring
Cypress
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.

An easier way to manage your Houston George Bush Intcntl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 6/11
Thu 6/18
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Houston