Check security wait times on the IAH website to plan your departure efficiently.
Most accurate provider | FlightHub 3 stars |
---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $220 (Frontier) |
One-way from | $88 (Cheapflightsfares) |
Popular in | February |
Cheapest in | August |
Average price | $435 |
Good round-trip deal | $276 or less |
Good one-way deal | $187 or less |
Fly from
Fly to
Route
Depart
Return
Price
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Sat 5/24
4:46 pm-11:44 pm
1 stop6h 58m
Lambert-St Louis
Sun 5/25
5:45 pm-10:29 am
1 stop16h 44m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Fri 5/16
5:53 pm-9:15 am
2 stops15h 22m
Lambert-St Louis
Sun 5/18
10:10 am-7:53 am
1 stop21h 43m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Fri 5/16
5:53 pm-9:15 am
2 stops15h 22m
Lambert-St Louis
Sun 5/18
7:30 am-7:34 pm
2 stops36h 04m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Wed 5/21
7:55 pm-10:03 pm
Nonstop2h 08m
Lambert-St Louis
Wed 5/28
6:15 am-8:33 am
Nonstop2h 18m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Mon 6/23
5:00 am-9:18 am
1 stop4h 18m
Lambert-St Louis
Tue 7/1
7:46 am-5:30 pm
1 stop9h 44m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Thu 6/12
7:10 am-2:37 pm
1 stop7h 27m
Lambert-St Louis
Mon 6/16
7:10 pm-11:59 pm
1 stop4h 49m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Thu 5/29
5:54 pm-12:04 am
2 stops30h 10m
Lambert-St Louis
Sun 6/1
6:18 pm-6:14 pm
1 stop23h 56m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Sat 5/24
4:46 pm-11:44 pm
1 stop6h 58m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Wed 5/28
8:44 pm-9:15 am
1 stop12h 31m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Mon 5/19
8:24 am-6:41 pm
2 stops10h 17m
Provider | Price Accuracy | Trust Score* |
---|---|---|
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*2 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy1 star | Trust Score*3 stars |
Booking 24 days in advance of your planned departure date is, on average, the best time to get cheap flights from Houston George Bush Intcntl Airport to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, August is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to St. Louis (average of $311). Flying from Houston George Bush Intcntl Airport to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
When flying from Houston George Bush Intcntl Airport to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 12% versus a flight in the morning.
Travelers seeking maximum savings on their Houston George Bush Intcntl Airport to St. Louis flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from IAH to STL are scheduled on a Monday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).
In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.
If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).
Comfort
Entertainment
Crew
Overall
Food
Boarding
Reviews
Anonymous,Apr 2025
LAS - STS
Comfort
Entertainment
Crew
Overall
Food
Boarding
Reviews
Anonymous,Apr 2025
LAS - STS
Comfort
Entertainment
Crew
Overall
Food
Boarding
Reviews
Anonymous,Apr 2025
LAS - STS
Comfort
Entertainment
Crew
Overall
Food
Boarding
Reviews
Anonymous,Apr 2025
LAS - STS
Comfort
Entertainment
Crew
Overall
Food
Boarding
Reviews
Anonymous,Apr 2025
LAS - STS
Comfort
Entertainment
Crew
Overall
Food
Boarding
Reviews
Anonymous,Apr 2025
LAS - STS
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$109 | Average$180 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$244 | Average$391 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$250 | Average$290 | FlexibilityNo cancel fee | On-time71% |