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 2021: compare St. Louis to Houston flight prices with the expected peak season, weather and rainfall in Houston.
STL - HO1
Price
$176 - $369
HO1
Temperature
53.6 - 84.2 °F
HO1
Precipitation
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

S/ 176

From Lambert-St Louis to Houston

One-way from

$40

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?

Tuesday is generally a great day to depart. Flying on this day could help you save up to 10%.

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

To save on the cost of your flight from St. Louis to Houston, book at least 27 days before your planned departure. Booking around this time can save you about 7% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $300 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $329.

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 July

When is the cheapest time to fly from St. Louis to Houston (STL - HO1)?

One of the essential ways to save on airfare from St. Louis to Houston is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 42% on airfare.

Cheap flights from St. Louis to Houston in September, October 2021

The best prices found for STL to IAH flights for September, October
18 Oct - 20 Oct
$85pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
5 Oct - 6 Oct
$87pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
6 Oct - 9 Oct
$93pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis

Lambert-St Louis to Houston 2021 flight deals

Cheap flights to Houston from St. Louis found for this year
18 Oct - 20 Oct
$85pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
5 Oct - 6 Oct
$87pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
12 Nov - 15 Nov
$91pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis

Non-stop flights to Houston from St. Louis

Save time with St. Louis to Houston direct flight deals
20 Oct - 26 Oct
$187pp
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
22 Oct - 25 Oct
$192pp
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
6 Oct - 9 Oct
$197pp
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
1 Oct - 4 Oct
$95pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
27 Sep - 28 Sep
$103pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
1 Oct - 4 Oct
$107pp
STL
Lambert-St Louis
Spirit Airlines
   
2 STOPS
IAH
Houston George Bush Intcntl
IAH
Houston George Bush Intcntl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis

One-way flights to Houston from St. Louis

The cheapest one-way flights from St. Louis to Houston
3:00 am - 7:17 am
Spirit Airlines
1 Stop
28h 17m
STL - IAH
Spirit Airlines
$40
FareScan
6:40 am - 7:02 am
Spirit Airlines
1 Stop
24h 22m
STL - IAH
Spirit Airlines
$42
FareScan
3:00 am - 5:41 pm
Spirit Airlines
1 Stop
14h 41m
STL - IAH
Spirit Airlines
$46
Gotogate

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. 5 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, Frontier, and American Airlines flying from Lambert-St Louis to Houston have implemented new flexible cancellation policies.

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.

Can I find flights from St. Louis to Houston for under $100 on Cheapflights?

Yes, there are multiple flights from St. Louis to Houston for under $100. The cheapest flight booked recently is on Spirit Airlines for just $85, but on average you can expect to pay $103.

Are there nonstop flights from St. Louis to Houston for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from St. Louis to Houston under $200. A good price for a nonstop flight from St. Louis to Houston is less than $256.

Are there last-minute flights available from St. Louis to Houston for under $100?

There are currently 20+ open flights from St. Louis to Houston within the next 7 days for less than $100.

What days are nonstop flights available from St. Louis to Houston?

Nonstop flights can be found on the following days: Saturday.

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.

How many flights depart from St. Louis to Houston on average per day?

Travelers can expect 4 flights from St. Louis to Houston on average per day.
Early Morning (Midnight to 6am) - 100% of flight departures

How long is the flight from St. Louis to Houston?

There are many flights that can get you from St. Louis to Houston in 24h 22m. Fly via Spirit Airlines to get the fastest option. St. Louis and Houston are separated by a distance of 671 mi.

What is the cheapest airline to fly from St. Louis to Houston round-trip?

Currently priced at $85, Spirit Airlines will fly you from St. Louis to Houston and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. Spirit Airlines is priced at 71% lower than the current average price of a flight leaving 3 months from now.

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: ANA (93%), Copa Airlines (92%), Mesa Airlines( 89%).

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

The cheapest flight price from St. Louis to Houston is $96. On average you can expect to pay $530. The most popular route, (Lambert-St Louis - Houston Hobby), can usually be booked for $85.

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 Delta. 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 72 hours 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 72 hours 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.
Average temperature for September in Houston
82.4 °F

Airports servicing St. Louis

Airports servicing Houston

Top 4 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
$98 $226 No cancel fee 62%
Delta
$169 $352 No cancel fee N/A
American Airlines
$171 $374 No cancel fee 71%
United Airlines
$174 $375 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 47% of STL to IAH departures
Morning 6 AM to noon 35% of STL to IAH departures
Afternoon Noon to 6 PM 12% of STL to IAH departures
Evening 6 PM to midnight 6% 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
0 flights
Monday
5 daily flights
Tuesday
4 daily flights
Wednesday
4 daily flights
Thursday
5 daily flights
Friday
5 daily flights
Saturday
0 flights
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