Check security wait times on IAH's website to ensure a smooth departure experience.

Round-trip from | $132 (Kiwi.com) |
|---|---|
One-way from | $63 (Trip.com) |
Popular in | November |
Cheapest in | September |
Average price | $398 |
Fly from
Fly to
Route
Depart
Return
Price
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Tue 2/3
8:45 am-11:33 pm
1 stop14h 48m
Lambert-St Louis
Tue 2/10
3:49 pm-7:04 pm
1 stop27h 15m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Wed 2/18
9:18 pm-9:26 pm
1 stop24h 08m
Lambert-St Louis
Mon 2/23
3:49 pm-6:28 pm
1 stop26h 39m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Tue 2/3
4:35 pm-11:33 pm
2 stops30h 58m
Lambert-St Louis
Tue 2/10
3:49 pm-11:11 am
1 stop19h 22m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Fri 1/16
5:18 pm-6:51 am
1 stop13h 33m
Lambert-St Louis
Mon 1/19
5:11 pm-11:11 am
1 stop18h 00m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Thu 1/22
8:18 pm-10:23 am
1 stop14h 05m
Lambert-St Louis
Sun 1/25
5:42 pm-9:00 am
1 stop15h 18m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Thu 1/22
8:18 pm-11:33 pm
1 stop27h 15m
Lambert-St Louis
Thu 1/29
10:01 pm-8:56 pm
1 stop22h 55m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Thu 1/22
8:19 pm-10:23 am
1 stop14h 04m
Lambert-St Louis
Sun 1/25
9:27 pm-12:19 am
2 stops26h 52m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Sat 2/21
11:02 am-11:59 pm
1 stop12h 57m
Lambert-St Louis
Wed 2/25
4:51 pm-11:32 pm
1 stop6h 41m
HoustonSt. Louis
HOU - STL
HOUSTL
Houston Hobby
Tue 2/10
2:35 pm-4:30 pm
Nonstop1h 55m
Lambert-St Louis
Wed 2/11
7:55 pm-10:10 pm
Nonstop2h 15m
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Tue 2/10
7:55 pm-10:00 pm
Nonstop2h 05m
Lambert-St Louis
Wed 2/11
6:00 am-8:30 am
Nonstop2h 30m
Booking 86 days in advance of your planned departure date is, on average, the best time to get cheap flights from Houston to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, October is the cheapest month in which you can book a flight from Houston to St. Louis (average of $117). Flying from Houston to St. Louis in November is currently the most expensive (average of $242). 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.
One of the essential ways to save on airfare from Houston to St. Louis is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 16% on airfare.
Travelers seeking maximum savings on their Houston to St. Louis flight should consider departing on Friday afternoons 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.
Entertainment
Crew
Comfort
Overall
Boarding
Food
Reviews
Ila,Mar 2025
HOU - DAL
Entertainment
Crew
Comfort
Overall
Boarding
Food
Reviews
Ila,Mar 2025
HOU - DAL
Entertainment
Crew
Comfort
Overall
Boarding
Food
Reviews
Ila,Mar 2025
HOU - DAL
Entertainment
Crew
Comfort
Overall
Boarding
Food
Reviews
Ila,Mar 2025
HOU - DAL
Entertainment
Crew
Comfort
Overall
Boarding
Food
Reviews
Ila,Mar 2025
HOU - DAL
St. Louis Lambert International Airport is located 14 miles from the downtown district in St. Louis. You’ll sometimes see it listed as Lambert Field. This airport is the busiest and the biggest one in the state of Missouri. There is a second airport in the city or located close to the city but the majority of flights arrive at Lambert. There is a connected railway though if it’s needed for a traveler to make it to the other airport.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$109 | Average$242 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$149 | Average$378 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$180 | Average$401 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$198 | Average$368 | FlexibilityNo cancel fee | On-time63% |