Check the IAH Depart tab online for current security wait times to plan your arrival at the airport efficiently.
Round-trip from | $157 (Frontier) |
---|---|
One-way from | $53 (Priceline) |
Popular in | February |
Cheapest in | August |
Average price | $352 |
Good round-trip deal | $340 or less |
Good one-way deal | $233 or less |
Fly from
Fly to
Route
Depart
Return
Price
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Mon 9/8
6:05 am-3:04 pm
1 stop8h 59m
Lambert-St Louis
Thu 9/18
4:00 pm-9:52 pm
1 stop5h 52m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Thu 9/11
6:23 am-1:35 pm
1 stop7h 12m
Lambert-St Louis
Thu 9/11
4:00 pm-9:52 pm
1 stop5h 52m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Thu 8/21
7:00 am-1:32 pm
1 stop6h 32m
Lambert-St Louis
Sun 8/24
2:30 pm-7:43 pm
1 stop5h 13m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Wed 9/10
7:00 am-2:37 pm
1 stop7h 37m
Lambert-St Louis
Wed 9/17
6:04 am-12:08 pm
1 stop6h 04m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Mon 9/1
6:05 am-12:56 pm
1 stop6h 51m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Wed 8/6
8:30 pm-9:52 am
1 stop13h 22m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Thu 8/21
7:50 am-10:01 am
Nonstop2h 11m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Wed 8/13
7:00 am-2:41 pm
1 stop7h 41m
Booking 65 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 Sunday (17 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).
Comfort
Boarding
Entertainment
Crew
Overall
Food
Reviews
Kim,May 2025
PIH - SLC
Comfort
Boarding
Entertainment
Crew
Overall
Food
Reviews
Kim,May 2025
PIH - SLC
Comfort
Boarding
Entertainment
Crew
Overall
Food
Reviews
Kim,May 2025
PIH - SLC
Comfort
Boarding
Entertainment
Crew
Overall
Food
Reviews
Kim,May 2025
PIH - SLC
Comfort
Boarding
Entertainment
Crew
Overall
Food
Reviews
Kim,May 2025
PIH - SLC
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$109 | Average$203 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$180 | Average$306 | FlexibilityNo cancel fee | On-time71% | |
Cheapest$243 | Average$391 | FlexibilityNo cancel fee | On-time69% |