Cheap flights from St. Louis to Houston (STL - IAH)

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The best prices from Lambert-St Louis to Houston are usually found in July or August, booked 29 days in advance, depart on a Wednesday or Monday and return on a Wednesday

How to find the cheapest flight from
St. Louis (STL) to Houston (IAH)

All the information you need to plan the best STL to IAH flight in 2022: compare St. Louis to Houston flight prices with the expected peak season, weather and rainfall in Houston.
STL - IAH
Price
$176 - $369
IAH
Temperature
53.6 - 84.2 °F
IAH
Rainfall
3.2 - 5.9 inches

Popular in

March

High demand for flights, 20% potential price rise

Cheapest in

July

Best time to find cheap flights, 40% potential price drop

Round-trip from

$176

From Lambert-St Louis to Houston

One-way from

$161

One-way flight from Lambert-St Louis to Houston

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from St. Louis to Houston?

Users have found that flying from St. Louis to Houston on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

How far in advance should I book a flight from St. Louis to Houston?

Travelers have found it’s best to book a flight 27 days in advance to save up to 7% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 27 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to Houston 1-2 weeks in advance for as low as $300, or $329 for flights within the next 24 hours.

When is the cheapest time to fly from St. Louis to Houston (STL - IAH)?

Unlike at noon, when flights are generally more expensive, you can save up to 42% on flights from St. Louis to Houston by exploring options for tickets in the evening.

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

July is one of the best times of the year to fly to Houston from St. Louis. Prices for July average $295 per person but you can even find prices for as low as $156. The most expensive prices can be found in the month of March. Opting for a July flight can save you 25% on your journey compared to booking in March

Cheap flights from St. Louis to Houston in May, June 2022

The best prices found for STL to IAH flights for May, June
11 Jun - 12 Jun
$238pp
STL
Lambert-St Louis
United Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
United Airlines
Non-Stop
STL
Lambert-St Louis
17 Jun - 20 Jun
$247pp
STL
Lambert-St Louis
Multiple Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Delta
 
1 STOP
STL
Lambert-St Louis
16 Jun - 19 Jun
$268pp
STL
Lambert-St Louis
United Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
United Airlines
Non-Stop
STL
Lambert-St Louis

Lambert-St Louis to Houston 2022 flight deals

Cheap flights to Houston from St. Louis found for this year
11 Jun - 12 Jun
$238pp
STL
Lambert-St Louis
United Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
United Airlines
Non-Stop
STL
Lambert-St Louis
17 Jun - 20 Jun
$247pp
STL
Lambert-St Louis
Multiple Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Delta
 
1 STOP
STL
Lambert-St Louis
16 Jun - 19 Jun
$268pp
STL
Lambert-St Louis
United Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
United Airlines
Non-Stop
STL
Lambert-St Louis

Non-stop flights to Houston from St. Louis

Save time with St. Louis to Houston direct flight deals
11 Jun - 12 Jun
$238pp
STL
Lambert-St Louis
United Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
United Airlines
Non-Stop
STL
Lambert-St Louis
16 Jun - 19 Jun
$268pp
STL
Lambert-St Louis
United Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
United Airlines
Non-Stop
STL
Lambert-St Louis
10 Jun - 12 Jun
$282pp
STL
Lambert-St Louis
United Airlines
Non-Stop
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
United Airlines
Non-Stop
STL
Lambert-St Louis

Last minute flights from St. Louis to Houston

Late deals on round-trip flights to Houston from St. Louis, departing today and this week
31 May - 11 Jun
$338pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
United Airlines
Non-Stop
STL
Lambert-St Louis
1 Jun - 4 Jun
$339pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
United Airlines
Non-Stop
STL
Lambert-St Louis
1 Jun - 4 Jun
$345pp
STL
Lambert-St Louis
Frontier
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Frontier
 
1 STOP
STL
Lambert-St Louis

One-way flights to Houston from St. Louis

The cheapest one-way flights from St. Louis to Houston
3:10 am - 10:48 am
Delta
1 Stop
7h 38m
STL - IAH
Delta
$161
Delta
2:24 pm - 5:09 am
Frontier
1 Stop
14h 45m
STL - IAH
Frontier
$166
Kiwi.com
3:21 pm - 7:38 pm
American Airlines
1 Stop
4h 17m
STL - IAH
American Airlines

Related info for your journey

Useful info, stats and facts about <span class="emphasized">St. Louis</span> to <span class="emphasized">Houston</span> flights.

Flight FAQs

From St. Louis to Houston

What airport do you fly from for flights from St. Louis to Houston?

For a flight from St. Louis to Houston, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 3 outbound flights to Houston per day. 6 airlines have flights to Houston from Lambert-St Louis on a regular basis.

Which airlines flying from Lambert-St Louis to Houston have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like United Airlines, American Airlines, and Spirit Airlines flying from Lambert-St Louis to Houston have implemented new flexible cancellation policies.

Can I find flights from St. Louis to Houston for under $300 on Cheapflights?

Yes, there are multiple flights from St. Louis to Houston for under $300. The cheapest flight booked recently is on United Airlines for just $238, but on average you can expect to pay $294.

Are there nonstop flights from St. Louis to Houston for under $300 on Cheapflights?

Cheapflights has at least 20 direct flights from St. Louis to Houston under $300. A good price for a nonstop flight from St. Louis to Houston is less than $318.

Are there last-minute flights available from St. Louis to Houston for under $400?

There are currently 20+ open flights from St. Louis to Houston within the next 7 days for less than $400.

How popular is this St. Louis to Houston flight route?

Flights from Lambert-St Louis to Houston have been viewed 40 times in the past calendar month.

What are the cheapest airlines flying from St. Louis to Houston round-trip?

Currently priced at $238, United Airlines will fly you from St. Louis to Houston and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and American Airlines - these airlines can fly you to your destination from $302 and $315, respectively. United Airlines is priced at 19% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from St. Louis to Houston one-way?

To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $119. Spirit Airlines flights start at $146 while deals on Frontier start at $148 one-way.

What are the most reliable airlines from St. Louis to Houston?

Before booking your flight to Houston from St. Louis, check out the most reliable airlines to get you to your destination on time: SkyWest Airlines (90%), United Airlines (89%), ANA( 89%).

What are the cheapest flights from St. Louis to Houston?

The cheapest flight price from St. Louis to Houston is $109. On average you can expect to pay $306. The most popular route, (Lambert-St Louis - Houston Hobby), can usually be booked for $247.

What are the most popular airlines that fly from St. Louis to Houston?

The most popular airlines flying from St. Louis to Houston are Major Airline, American Airlines and Alaska Airlines. Something to consider prior to booking your flight.

COVID Restrictions

View COVID Travel Restrictions for Houston, TX

Do I need a COVID test to fly to Houston from St. Louis?

Information is based on travel restrictions for travel to Houston within the United States

Most visitors from Lambert-St Louis need to provide a negative COVID-19 test result and/or quarantine to enter Houston.

COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Houston.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Houston.

Do I need a test to fly back to St. Louis from Houston?

Returning to Lambert-St Louis from Houston

COVID-19 testing requirements
Visitors from Houston must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Lambert-St Louis.

Quarantine requirements
Visitors from Houston are not required to quarantine after entering Lambert-St Louis.

Hide COVID Travel Restrictions for Houston, TX

Alternative routes for St. Louis to Houston

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Houston

Things to know before you go - useful duration and weather info for your trip from St. Louis to Houston.
Flight duration from STL to Houston
2h 03m
Average temperature for May in Houston
77.0 °F

Airports servicing St. Louis

Airports servicing Houston

Top 5 airlines flying from Lambert-St Louis to Houston

The chart below displays the airlines Cheapflights users traveling from St. Louis to Houston choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Frontier
$95 $179 No cancel fee 62%
American Airlines
$104 $350 No cancel fee 71%
Spirit Airlines
$107 $206 No cancel fee 65%
Delta
$130 $348 No cancel fee N/A
United Airlines
$187 $308 No cancel fee 69%

Hourly flight availability from St. Louis to Houston

See what time of day planes typically take off from St. Louis towards Houston.
Early morning Midnight to 6 AM 48% of STL to IAH departures
Afternoon Noon to 6 PM 26% of STL to IAH departures
Morning 6 AM to noon 21% of STL to IAH departures
Evening 6 PM to midnight 5% of STL to IAH departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from St. Louis to Houston
See how many times per day planes take to the skies headed from St. Louis to Houston.
Sunday
4 daily flights
Monday
4 daily flights
Tuesday
4 daily flights
Wednesday
4 daily flights
Thursday
4 daily flights
Friday
4 daily flights
Saturday
0 flights
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