Cheap Flights from Houston (HOUA) to St Louis (STL)

Compare Houston to St Louis flight deals

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Flight deals from Houston to St Louis

Looking for a cheap last-minute deal or the best return flight from Houston to St Louis Airport? If you want to travel next month, return fares start from $352. Find the lowest prices on one-way and return tickets right here.

St Louis.$168 per passenger.Departing Tue, 4 Aug, returning Mon, 10 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Tue, 4 Aug, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Mon, 10 Aug, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $168, select.

St Louis.$352 per passenger.Departing Wed, 15 Jul, returning Sat, 15 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Wed, 15 Jul, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Sat, 15 Aug, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $352, select.

St Louis.$352 per passenger.Departing Wed, 17 Jun, returning Wed, 24 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Wed, 17 Jun, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Wed, 24 Jun, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $352, select.

St Louis.$352 per passenger.Departing Wed, 24 Jun, returning Wed, 1 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Wed, 24 Jun, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Wed, 1 Jul, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $352, select.

St Louis.$355 per passenger.Departing Tue, 21 Jul, returning Tue, 28 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Houston George Bush Intercntl. on Tue, 21 Jul, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Tue, 28 Jul, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $355, select.

St Louis.$385 per passenger.Departing Tue, 7 Jul, returning Tue, 4 Aug.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Houston Hobby on Tue, 7 Jul, arriving in St Louis.Inbound direct flight with Southwest Airlines departs from St Louis on Tue, 4 Aug, arriving in Houston Hobby.Price includes taxes and charges.From $385, select.

St Louis.$385 per passenger.Departing Wed, 4 Nov, returning Tue, 10 Nov.Return flight with United.Outbound direct flight with United departs from Houston George Bush Intercntl. on Wed, 4 Nov, arriving in St Louis.Inbound direct flight with United departs from St Louis on Tue, 10 Nov, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $385, select.

St Louis.$386 per passenger.Departing Wed, 24 Jun, returning Wed, 1 Jul.Return flight with United.Outbound direct flight with United departs from Houston George Bush Intercntl. on Wed, 24 Jun, arriving in St Louis.Inbound direct flight with United departs from St Louis on Wed, 1 Jul, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $386, select.

St Louis.$386 per passenger.Departing Tue, 13 Oct, returning Tue, 13 Oct.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Houston Hobby on Tue, 13 Oct, arriving in St Louis.Inbound direct flight with Southwest Airlines departs from St Louis on Tue, 13 Oct, arriving in Houston Hobby.Price includes taxes and charges.From $386, select.

St Louis.$386 per passenger.Departing Tue, 21 Jul, returning Tue, 28 Jul.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Houston Hobby on Tue, 21 Jul, arriving in St Louis.Inbound direct flight with Southwest Airlines departs from St Louis on Tue, 28 Jul, arriving in Houston Hobby.Price includes taxes and charges.From $386, select.

St Louis.$413 per passenger.Departing Wed, 16 Sep, returning Wed, 23 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Houston George Bush Intercntl. on Wed, 16 Sep, arriving in St Louis.Inbound indirect flight with Delta, departs from St Louis on Wed, 23 Sep, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $413, select.

St Louis.$415 per passenger.Departing Thu, 13 Aug, returning Tue, 18 Aug.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Houston Hobby on Thu, 13 Aug, arriving in St Louis.Inbound direct flight with Southwest Airlines departs from St Louis on Tue, 18 Aug, arriving in Houston Hobby.Price includes taxes and charges.From $415, select.

St Louis.$446 per passenger.Departing Mon, 19 Oct, returning Mon, 2 Nov.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Houston Hobby on Mon, 19 Oct, arriving in St Louis.Inbound direct flight with Southwest Airlines departs from St Louis on Mon, 2 Nov, arriving in Houston Hobby.Price includes taxes and charges.From $446, select.

St Louis.$482 per passenger.Departing Wed, 24 Jun, returning Fri, 26 Jun.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Houston Hobby on Wed, 24 Jun, arriving in St Louis.Inbound direct flight with Southwest Airlines departs from St Louis on Fri, 26 Jun, arriving in Houston Hobby.Price includes taxes and charges.From $482, select.

St Louis.$497 per passenger.Departing Wed, 16 Sep, returning Wed, 23 Sep.Return flight with United.Outbound direct flight with United departs from Houston George Bush Intercntl. on Wed, 16 Sep, arriving in St Louis.Inbound direct flight with United departs from St Louis on Wed, 23 Sep, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $497, select.

St Louis.$510 per passenger.Departing Tue, 29 Dec, returning Tue, 12 Jan.Return flight with United.Outbound direct flight with United departs from Houston George Bush Intercntl. on Tue, 29 Dec, arriving in St Louis.Inbound direct flight with United departs from St Louis on Tue, 12 Jan, arriving in Houston George Bush Intercntl..Price includes taxes and charges.From $510, select.

Find the cheapest month to fly from Houston to St Louis

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Houston to St Louis flights are currently cheapest in August.

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Direct flights from Houston to St Louis

Houston to St Louis: Alternative routes

Compare routes from Houston to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

Houston to St Louis: Flight information

The things to know before you go.

Cheapest flight found	$168
Cheapest month to fly	August
Average flight time	2 hrs, 7 mins
Most popular airline	Southwest Airlines
Average flights per week	161

Finding cheap flights from Houston to St Louis: Frequently asked questions

How much are return flights from Houston to St Louis?

The best price we found for a return flight from Houston to St Louis is $168. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Houston to St Louis?

2 hours and 6 minutes is the average flight time from Houston to St Louis.

Which airlines fly direct from Houston to St Louis?

Southwest Airlines, United and Virgin Australia fly direct from Houston to St Louis.

How many flights are there a week from Houston to St Louis?

As of May 2026, there are 161 flights per week flying from Houston to St Louis.

When is the cheapest time to fly from Houston to St Louis?

The cheapest month to fly from Houston to St Louis is usually August.

Which upcoming date is cheapest to fly from Houston to St Louis Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Houston to St Louis Airport on Tuesday, 4 August 2026.

Can I get a direct flight from Houston to St Louis Airport?

Yes – the average flight time is 2 hours and 6 minutes.

How can I find the best flight deal to St Louis?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Louis but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to St Louis?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.

Travelling from Houston to St Louis Lambert International Airport (STL): What you need to know

Your trip gets off the ground at one of Houston's main airports, Houston George Bush Intercontinental Airport (IAH) or Houston Hobby Airport (HOU). Explore your options for booking a flight from Houston to St Louis Lambert International Airport (STL) jetting off from either of these bases.
Book a direct Houston to St Louis Lambert International Airport flight and you'll be in the air for an average of 2 hours 5 minutes.
St Louis (where St Louis Lambert International Airport is located) and Houston share the UTC-6 timezone. You can plan your trip without factoring in timezone differences.
Houston George Bush Intercontinental Airport (IAH) to St Louis Lambert International Airport (STL) is the most popular route. There are 25 direct weekly departures to choose from. If you have things to do before heading off, hop on the last flight with United Airlines at 8:17pm. Opt for the first IAH to STL departure with United Airlines at 7:27am if getting there sooner works for you.
To ensure you catch your flight from Houston to STL, allow plenty of time to check in and drop off your luggage. Arriving two hours before international departures and an hour before domestic flights is the general travel rule.
If you're going away during a peak month like July, get to the airport even earlier. It's smart to arrive up to four hours before an international flight and two hours ahead of a domestic departure. Expect lines to be longer during holiday periods like Thanksgiving and spring break.

Airports in Houston

Houston George Bush Intercontinental Airport (IAH)

Go straight to your destination from Houston George Bush Intercontinental Airport (IAH). Direct flights from Houston to St Louis Lambert International Airport (STL) can be booked from here.
When departing from IAH, you can catch a direct flight from Houston to St Louis Lambert International Airport with United Airlines.
The majority of travellers prefer to book seats with United from IAH to STL.
United takes the lead in punctuality. A reliable 81.25% of its services on this route reach their destination on schedule.
The journey from central Houston to IAH takes around 1 hour 10 minutes on public transport. If you drive, ride-share or take a taxi, you'll cover the 40 kilometres in 30 minutes or so, depending on traffic.
Catching an early flight from Houston to St Louis Lambert International Airport? Avoid the hassle of rushing to the terminal (and get some extra shut-eye) by choosing one of these stays near Houston George Bush Intercontinental Airport:
Of all flights leaving Houston George Bush Intercontinental Airport, 79% land on time at their destination.
You'll find IAH at 16930 JFK Boulevard.

Houston Hobby Airport (HOU)

Looking to fly out of Houston Hobby Airport (HOU)? Direct Houston to St Louis Lambert International Airport (STL) plane tickets are available from here.
From HOU, direct flights from Houston to STL can be booked with Southwest Airlines.
Southwest Airlines is the most popular choice for travellers flying from HOU to STL.
Book with Southwest Airlines if being on time is your priority. Its flights between Houston Hobby Airport and St Louis Lambert International Airport arrive as scheduled 83.4% of the time.
You can arrive at HOU from central Houston in about 20 minutes by car, depending on traffic conditions. The journey on public transport takes roughly 50 minutes to cover the 19 kilometres or so.
Got an early start? You might like to check in to one of these hotels near Houston Hobby Airport the day before your Houston to STL flight:
79% of flights out of Houston Hobby Airport arrive according to schedule.
The street address for HOU is 7800 Airport Boulevard.

About St Louis Lambert International Airport (STL)

Consider staying in a hotel close to STL if you're catching a late flight from Houston to St Louis Lambert International Airport. Select one of these accommodation options and skip the long transfer:
Booking your ride around one week in advance of your Houston to St Louis Lambert International Airport flight can help you find the best deal.
STL is located at 10701 Lambert International Blvd..

Getting from St Louis Lambert International Airport (STL) to central St Louis

Central St Louis is around 24 kilometres from St Louis Lambert International Airport and takes about 25 minutes to reach by car. Explore your options for getting into the city, whether that's with a car hire, taxi or ride-share.
Travelling by public transport takes around 30 minutes.

How to find the cheapest flights from Houston to St Louis Lambert International Airport (STL)

$144 is the best price for a one-way ticket from Houston to St Louis Lambert International Airport. Return flights start from $168. These fares may change depending on demand and availability.
To find cheap flights from Houston to STL, book early. Airlines usually offer lower fares when flights are first released.
The 'Whole month' search tool will show you the cheapest Houston to St Louis Lambert International Airport tickets across each month. It's an easy way to snap up a bargain if your dates aren't set in stone.
Finding a cheap plane ticket from Houston to STL couldn't be easier with Price Alerts. Simply create one of these automatic alerts and we'll get in touch as soon as a lower fare pops up.
Save on your flight from Houston to St Louis Lambert International Airport by using filters. Select your ideal duration, number of stops and airlines, then sort the results by 'Cheapest' for the best deals.

The best time to fly from Houston to St Louis Lambert International Airport (STL)

July is when most people book flights from Houston to St Louis Lambert International Airport (STL). Visit St Louis in December for a more low-key escape.
Before locking in your Houston to STL plane ticket, consider the kind of weather you prefer. July is the warmest month in St Louis, with temperatures ranging from 17ºC (63ºF) to 33ºC (91ºF).
January has temperatures of between -7ºC (19ºF) and 8ºC (46ºF). Look for cheap tickets from Houston to St Louis Lambert International Airport around that time if you like cooler conditions.

More about St Louis

When it comes to searching for somewhere to lay your head, you'll find the best places to stay in St Louis right here. Check out these hotels once you've locked in your flight from Houston to St Louis Lambert International Airport:
Every great holiday has to include some sightseeing. The Gateway Arch, Saint Louis Arch and Museum at the Gateway Arch are attractions you won't want to skip in St Louis.

Explore more of the United States

You've visited St Louis, now it's time to discover other corners of the United States. Travel about 257 kilometres east to Evansville to check off its popular sights. From Mesker Park Zoo to Riverfront Park and Evansville Museum of Arts, History & Science, there's plenty to keep you on the go.
If you're interested in discovering another great destination in the United States, head for Columbia, about 177 kilometres west of St Louis. Museum of Art and Archaeology, Mizzou Botanic Garden and Francis Quadrangle are key reasons to visit.