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

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The best prices from Houston to Lambert-St Louis Intl are usually found in August or September, booked 27 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

How to find the cheapest flight from
Houston (IAH) to Lambert-St Louis Intl (STL)

IAH - STL
Price
$249 - $375
STL
Temperature
44.6 - 89.6 °F
STL
Rainfall
2.2 - 5.1 inches

Popular in

March

High demand for flights, 13% potential price rise

Cheapest in

August

Best time to find cheap flights, 24% potential price drop

Round-trip from

$249

From Houston to Lambert-St Louis Intl

One-way from

$103

One-way flight from Houston to Lambert-St Louis Intl

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 Houston to Lambert-St Louis Intl?

Travelers have found that booking a Tuesday departure is the best way to save up to 11% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 61 days in advance, which can save you up to 33% on flights from Houston to Lambert-St Louis Intl compared to booking the week you need them. Waiting 61 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $143. For sooner than that we have options available in the next 3 days from $179.

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

Our data shows that June tends to be the cheapest month to fly to Lambert-St Louis Intl from Houston. Users have commonly found prices around $148 for the month, but tickets can be as low as $77. Due to multiple factors, prepare for potentially higher prices in July.

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

One of the essential ways to save on airfare from Houston to Lambert-St Louis Intl is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 12% on airfare.

Cheap flights from Houston to Lambert-St Louis Intl in February, March 2021

3 Mar - 9 Mar
$116pp
IAH
Houston George Bush Intcntl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
IAH
Houston George Bush Intcntl
2 Mar - 5 Mar
$118pp
IAH
Houston George Bush Intcntl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
IAH
Houston George Bush Intcntl
3 Mar - 5 Mar
$141pp
IAH
Houston George Bush Intcntl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
IAH
Houston George Bush Intcntl

Houston to Lambert-St Louis Intl 2021 flight deals

29 Apr - 2 May
$93pp
IAH
Houston George Bush Intcntl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
IAH
Houston George Bush Intcntl
28 Apr - 2 May
$98pp
IAH
Houston George Bush Intcntl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
IAH
Houston George Bush Intcntl
1 Apr - 6 Apr
$99pp
IAH
Houston George Bush Intcntl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
IAH
Houston George Bush Intcntl

Non-stop flights to Lambert-St Louis Intl from Houston

1 Apr - 6 Apr
$199pp
IAH
Houston George Bush Intcntl
United Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
United Airlines
Non-Stop
IAH
Houston George Bush Intcntl
13 Mar - 20 Mar
$219pp
IAH
Houston George Bush Intcntl
United Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
United Airlines
Non-Stop
IAH
Houston George Bush Intcntl
25 May - 30 May
$225pp
IAH
Houston George Bush Intcntl
United Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
United Airlines
Non-Stop
IAH
Houston George Bush Intcntl

Last minute flights from Houston to Lambert-St Louis Intl

3 Mar - 9 Mar
$116pp
IAH
Houston George Bush Intcntl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
IAH
Houston George Bush Intcntl
2 Mar - 5 Mar
$118pp
IAH
Houston George Bush Intcntl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
IAH
Houston George Bush Intcntl
3 Mar - 5 Mar
$141pp
IAH
Houston George Bush Intcntl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
IAH
Houston George Bush Intcntl

One-way flights to Lambert-St Louis Intl from Houston

9:40 am - 1:21 pm
Frontier
1 Stop
27h 41m
IAH - STL
Frontier
$103
Gotogate
4:00 pm - 3:51 pm
Multiple Airlines
3 Stops
47h 51m
IAH - STL
Multiple Airlines
$116
Kiwi.com
6:07 am - 8:15 am
United Airlines
Nonstop
2h 08m
IAH - STL
United Airlines
$120
United

Related info for your journey

Flight FAQs

From Houston to Lambert-St Louis Intl

Are flight prices decreasing from Houston to St Louis 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 Houston and St Louis 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 Houston George Bush Intcntl to Lambert-St Louis 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 Houston George Bush Intcntl to Lambert-St Louis 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 Houston George Bush Intcntl to Lambert-St Louis 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 Houston George Bush Intcntl to Lambert-St Louis have implemented new flexible cancellation policies.

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

Yes, there are multiple flights from Houston to Lambert-St Louis Intl for under $100. The cheapest flight booked recently is on Frontier for just $88, but on average you can expect to pay $138.

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

Cheapflights has at least 19 direct flights from Houston to Lambert-St Louis Intl under $200. A good price for a nonstop flight from Houston to Lambert-St Louis Intl is less than $322.

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

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

How popular is this flight route?

The Houston George Bush Intcntl to Lambert-St Louis flight path was viewed by 63 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 Houston or St Louis?

Expected rainfall in Houston is less than in St Louis. You can expect this to be the case over the next 14 days.

Is Houston weather warmer or cooler than St Louis?

Our data indicates that the weather will be 90 °F on average in the month of July. The temperature in St Louis is typically hotter than in Houston. If you're traveling when the temperature is at its warmest, push to plan early, as flight price and availability will have an impact on your travels. For the best results, search for flights well in advance or after peak season.

How long is the flight from Houston to Lambert-St Louis Intl?

There are many flights that can get you from Houston to Lambert-St Louis Intl in 6h 17m. Fly via Frontier to get the fastest option.

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

According to our current data, Frontier ($88), offers the cheapest pricing from Houston to Lambert-St Louis Intl. Users have found that Frontier is 73% cheaper than the other options available to this destination.

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

One-way options have recently been found by users for as low as $44 on Frontier. Another option is United Airlines, who have fights from $100.

Alternative routes for Houston to Lambert-St Louis Intl

Destination information for Lambert-St Louis Intl

Average temperature for February in Lambert-St Louis Intl
48.2 °F
Avg rainfall for February in Lambert-St Louis Intl
2.2 ″

Airports servicing Houston

Airports servicing St. Louis

Top 4 airlines flying from Houston to Lambert-St Louis Intl

Airline Cheapest Average Flexibility On-time COVID-19 safety
Frontier
$87 $218 No cancel fee 62%
Delta
$121 $308 No cancel fee N/A
American Airlines
$147 $334 No cancel fee 71%
United Airlines
$173 $412 No cancel fee 69%

Hourly flight availability from Houston to Lambert-St Louis Intl

Evening 6 PM to midnight 51% of IAH to STL departures
Morning 6 AM to noon 34% of IAH to STL departures
Afternoon Noon to 6 PM 14% of IAH to STL departures
Early morning Midnight to 6 AM 1% of IAH to STL departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Houston to Lambert-St Louis Intl
Sunday
8 daily flights
Monday
6 daily flights
Tuesday
5 daily flights
Wednesday
5 daily flights
Thursday
8 daily flights
Friday
8 daily flights
Saturday
5 daily flights
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