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

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The best prices from St Louis to Houston are usually found in July or August, booked 23 days in advance, depart on a Saturday or Tuesday and return on a Tuesday

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 2021: compare St Louis to Houston flight prices with the expected peak season, weather and rainfall in Houston.
STL - IAH
Price
$184 - $359
IAH
Temperature
59 - 86 °F

Popular in

December

High demand for flights, 14% potential price rise

Cheapest in

July

Best time to find cheap flights, 41% potential price drop

Round-trip from

$184

From St Louis to Houston

One-way from

$145

One-way flight from 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?

Departing on a Friday is a good option for securing a great price. You can expect to save up to 29% when planning your travel around this day of the week.

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

Users have found that booking a flight from St Louis to Houston at least 44 days early can save you up to 26% on average compared to booking a flight this week. If booking 44 days before your flight isn’t an option for you, users have found flights from St Louis to Houston for as little as $118 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $157 for flights departing within the next 3 days.

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

The best pricing can be found in the month of February. Prices to Houston from St Louis average $134. You can even find prices in February for less than $134, as users have found deals to Houston from as low as $68. The month of December appears to be one of the more expensive times to travel to Houston from St Louis. Flying in the targeted month can save you up to 46%.

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

It’s optimal to fly from St Louis to Houston in the evening. By choosing this option you can save up to 46% on the cost of your flight, compared to a flight at noon.

Cheap flights from St Louis to Houston in May, June 2021

The best prices found for STL to IAH flights for May, June
14 May - 17 May
$119pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
15 May - 19 May
$123pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
16 May - 18 May
$129pp
STL
Lambert-St Louis
Frontier
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Frontier
 
1 STOP
STL
Lambert-St Louis

St Louis to Houston 2021 flight deals

Cheap flights to Houston from St Louis found for this year
14 May - 17 May
$119pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
15 May - 19 May
$123pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
16 May - 18 May
$129pp
STL
Lambert-St Louis
Frontier
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Frontier
 
1 STOP
STL
Lambert-St Louis

Non-stop flights to Houston from St Louis

Save time with St Louis to Houston direct flight deals
26 Sep - 2 Oct
$219pp
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
8 Oct - 10 Oct
$239pp
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
23 May - 30 May
$255pp
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
14 May - 17 May
$119pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
15 May - 19 May
$123pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
16 May - 18 May
$129pp
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
2:00 am - 6:48 am
Delta
1 Stop
4h 48m
STL - IAH
Delta
$145
Delta
12:42 pm - 8:31 pm
American Airlines
1 Stop
7h 49m
STL - IAH
American Airlines
10:46 am - 3:39 am
Multiple Airlines
2 Stops
16h 53m
STL - IAH
Multiple Airlines
$149
Kiwi.com

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

Are flight prices decreasing from St Louis to Houston due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both St Louis and Houston for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Lambert-St Louis to Houston George Bush Intcntl to control the spread of COVID-19?

Delta is one of the many airlines that have implemented additional safety measures to control the spread of COVID-19. Some of the new policies that have been implemented to accommodate travelers flying from Lambert-St Louis to Houston George Bush Intcntl are improved sanitation, HEPA filters, mask requirements, social distance seating (for a limited time), and pre-flight testing for antibodies and symptoms. Policies will vary by airline.

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

United Airlines, Frontier, and American Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

What airports do I use to fly from St. Louis to Houston?

Booking a flight from Lambert-St Louis (STL) to Houston George Bush Intcntl (IAH) is your only option if you wish to fly from St. Louis to Houston. On a typical day, there are 5 flights from Lambert-St Louis to George Bush Intcntl, all of which are around 1h 57m for a nonstop flight. You can also purchase a plane ticket from 5 airlines when you book a flight from Lambert-St Louis to Houston.

Can I find flights from St Louis to Houston for under $200 on Cheapflights?

Yes, there are multiple flights from St Louis to Houston for under $200. The cheapest flight booked recently is on Multiple Airlines for just $119, but on average you can expect to pay $152.

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 $323.

Are there last-minute flights available from St Louis to Houston for under $200?

There are currently 20+ open flights from St Louis to Houston within the next 7 days for less than $200.

How popular is this flight route?

The Lambert-St Louis to Houston George Bush Intcntl flight path was viewed by 40 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

Does it rain more in St Louis or Houston?

In St Louis, there will be same rainfall in St Louis compared to Houston over the next 18 days.

Is St Louis weather warmer or cooler than Houston?

We forecast the temperature to be around the 90 °F's in July, on average. The temperature in Houston is generally colder than in St Louis. Book flights in a timely manner in correlation to your departure date.

How long is the flight from St Louis to Houston?

Departing from St Louis to Houston will take you 11h 26m. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

Cheapflights users have booked flights from St Louis to Houston round-trip from $153. Another airline that can offer you cheap pricing is Frontier. Users have found that Spirit Airlines is 50% cheaper than the other options available to this destination.

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

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $56. Spirit Airlines flights start at $115 while deals on United Airlines start at $120 one-way.

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.
Average temperature for May in Houston
77.0 °F

Airports servicing St. Louis

Airports servicing Houston

Top 4 airlines flying from 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
$101 $226 No cancel fee 62%
American Airlines
$171 $343 No cancel fee 71%
Delta
$236 $390 No cancel fee N/A
United Airlines
$174 $392 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 52% of STL to IAH departures
Morning 6 AM to noon 24% of STL to IAH departures
Afternoon Noon to 6 PM 24% of STL to IAH departures
Evening 6 PM to midnight 0% 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
6 daily flights
Monday
6 daily flights
Tuesday
7 daily flights
Wednesday
7 daily flights
Thursday
2 daily flights
Friday
6 daily flights
Saturday
7 daily flights
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