IAH - STL

$45 Find Cheap Flights from Houston George Bush Airport to St. Louis - Compare and Save

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Everything you should know

Cheapest round-trip
$255
Typical prices: $350-$673
Frontier
Tue 10/30Fri 11/2
IAH - STL • 1 stop
Cheapest non-stop
$292
Typical prices: $396-$721
United Airlines
Thu 11/8Sun 11/11
IAH - STL • Non-stop
Nonstop flights
You can fly direct with United Airlines. Average duration is 2h 08m
Direct flights
+1
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 11 weeks in advance save around 60% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 20% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $214 (round-trip)
Shortest trip • 4h 16m (one-way)
Insights
Insights
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We hope you love your trip to St. Louis!

Cheap Flights from George Bush Intcntl to St. Louis (IAH-STL)

 

Cheap flights from George Bush Intcntl to St. Louis with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Fri, Nov 6 - Fri, Nov 13
Frontier Logo
9:14 pm - 11:16 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
26h 02m2 stops Atlanta Hartsfield-Jackson Orlando
Frontier Logo
6:34 pm - 8:55 pmSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
26h 21m2 stops Atlanta Hartsfield-Jackson Orlando
$249Frontier
Fri, Oct 30 - Mon, Nov 2
Frontier Logo
6:05 am - 5:40 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
11h 35m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
6:44 pm - 3:30 pmSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
20h 46m2 stops Atlanta Hartsfield-Jackson Orlando
$255Frontier
Sat, Dec 5 - Mon, Dec 7
Frontier Logo
9:41 am - 12:12 amIAH  Houston George Bush Intcntl-STL Lambert-St Louis
14h 31m2 stops Atlanta Hartsfield-Jackson Orlando
Frontier Logo
12:02 pm - 8:46 amSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
20h 44m1 stop Atlanta Hartsfield-Jackson
$256Frontier
Tue, Nov 24 - Fri, Nov 27
Frontier Logo
3:52 pm - 11:59 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
8h 07m1 stop Orlando
Frontier Logo
1:20 pm - 12:25 amSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
11h 05m1 stop Orlando
$256Frontier
Thu, Nov 19 - Wed, Nov 25
American Airlines Logo
2:37 pm - 8:04 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
5h 27m1 stop Chicago O'Hare Intl
American Airlines Logo
5:29 pm - 12:09 amSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
6h 40m1 stop Chicago O'Hare Intl
$276American Airlines
Fri, Dec 18 - Mon, Dec 21
Delta Logo
6:28 pm - 12:05 amIAH  Houston George Bush Intcntl-STL Lambert-St Louis
5h 37m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:00 am - 1:33 pmSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
7h 33m1 stop Atlanta Hartsfield-Jackson
$276Delta
Fri, Dec 18 - Mon, Dec 21
Delta Logo
4:29 pm - 12:05 amIAH  Houston George Bush Intcntl-STL Lambert-St Louis
7h 36m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:15 pm - 11:59 pmSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
4h 44m1 stop Atlanta Hartsfield-Jackson
$276Delta
Sun, Nov 8 - Wed, Nov 11
United Airlines Logo
12:05 pm - 2:13 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
2h 08mnonstop
United Airlines Logo
2:55 pm - 5:19 pmSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
2h 24mnonstop
$292United Airlines
Fri, Dec 11 - Sun, Dec 13
United Airlines Logo
7:40 am - 9:45 amIAH  Houston George Bush Intcntl-STL Lambert-St Louis
2h 05mnonstop
United Airlines Logo
6:00 am - 8:21 amSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
2h 21mnonstop
$292United Airlines
Thu, Feb 18 - Sun, Feb 21
United Airlines Logo
8:07 pm - 10:06 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
1h 59mnonstop
United Airlines Logo
8:50 am - 11:08 amSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
2h 18mnonstop
$292United Airlines

Price, demand and travel trends for Houston George Bush Intcntl Airport to St. Louis flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Houston George Bush Intcntl Airport to St. Louis?

Round-trip flights from Houston George Bush Intcntl Airport to St. Louis typically range from $350 to $673. The lowest price found in the past 5 days was $255, on Frontier.

What's the cheapest day of the week to fly from Houston George Bush Intcntl Airport to St. Louis?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Houston George Bush Intcntl Airport to St. Louis. It’s 29% cheaper than the average day, while Monday is the most expensive, with prices 63% higher.

What’s the cheapest month to fly from Houston George Bush Intcntl Airport to St. Louis?

•October is the cheapest month to fly from Houston George Bush Intcntl Airport to St. Louis at $369 round-trip.
•March ($673) and April ($668) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 82% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Houston George Bush Intcntl Airport to St. Louis the cheapest?

Flights from Houston George Bush Intcntl Airport to St. Louis are cheapest 11 weeks before departure. Booking in this window typically costs about 60% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice for your flight from George Bush Intcntl to St. Louis

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
John Walton

John Walton

Expert on IAH

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Key details for Houston George Bush Intcntl Airport to St. Louis flights

Low season

January

Cheapest flight

$45
Beat the crowds with an average 23% drop in travelers.
The most popular month to fly with an average 34% increase in travelers.
One-way flight from Houston George Bush Intcntl Airport to St. Louis

When to book flights from George Bush Intcntl to St. Louis

Are your dates flexible? Find out the best times to travel from George Bush Intcntl to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Houston George Bush Intcntl Airport to St. Louis flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from Houston George Bush Intcntl Airport to St. Louis?

    These are the earliest and latest flight times available from Houston George Bush Intcntl Airport to St. Louis:

    • Earliest: departs at 7:25 am and lands at 9:33 am
    • Latest: departs at 8:24 pm and lands at 10:32 pm.

    The flight takes about 2h 08m.

  • What cabin classes can I book on flights from Houston George Bush Intcntl Airport to St. Louis?

    Two cabin classes are available on flights from Houston George Bush Intcntl Airport to St. Louis:

    • Economy Class
    • First Class

  • How long is a flight from Houston George Bush Intcntl Airport to St. Louis?

    A nonstop flight from Houston George Bush Intcntl Airport to St. Louis takes 2h 08m, covering 668 miles.

  • Do I need a passport to fly from Houston George Bush Intcntl Airport to St. Louis?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Houston George Bush Intcntl Airport to St. Louis flight?

    Round-trip flights from Houston George Bush Intcntl Airport to St. Louis range from $350 to $673, with an average of $460 over the past 12 months. Anything below $350 counts as a good deal.

  • How expensive are last-minute Houston George Bush Intcntl Airport to St. Louis flights?

    Last-minute fares on this route (booked within two weeks of departure) run 58% above the $460 route average. Book 11 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Houston George Bush Intcntl Airport to St. Louis?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $214 round-trip via Orlando (MCO), compared to $490 for nonstop.

  • What is the standard checked-bag allowance on flights from Houston George Bush Intcntl Airport to St. Louis?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$80 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Houston George Bush Intcntl Airport to St. Louis?

    The Embraer 175 (Enhanced Winglets) family is used most often on this route, operated mainly by United Airlines. Other aircraft seen on the route include Canadair (Bombardier) Regional Jet CRJ-550 variants.

  • How are flight departures from Houston George Bush Intcntl Airport to St. Louis spread across the day?

    Afternoon is the busiest departure period on Houston George Bush Intcntl Airport to St. Louis flights, with 50% of flights leaving in that window. Morning departures account for 25%, evening flights for 25%, and night flights for 0%.

  • Have flight prices from Houston George Bush Intcntl Airport to St. Louis changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $255 to $1,014. That means the highest observed fare was about 4x higher than the lowest one.

  • How are flight prices from Houston George Bush Intcntl Airport to St. Louis looking right now?

    One-way fares from Houston George Bush Intcntl Airport to St. Louis are currently lower than usual. Average one-way flight prices are about $86, which is 65% below the typical average for this route.

  • What car rental options are available at Lambert-St Louis Airport (STL)?

    Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates starting from around $31 for economy cars. Top options include:

    • Hertz
    • Budget
    • Alamo
    • Enterprise Rent-A-Car
    • Payless

  • Which airports can I use when flying from Houston George Bush Intcntl Airport to St. Louis?

    Flights from Houston George Bush Intcntl Airport to St. Louis usually depart from Houston George Bush Intcntl (IAH) and arrive at Lambert-St Louis (STL).

  • Which airports do connecting flights from Houston George Bush Intcntl Airport to St. Louis pass through?

    One-stop flights from Houston George Bush Intcntl Airport to St. Louis most commonly connect through:

    • Atlanta Hartsfield-Jackson (ATL) - 60% of one-stop connections
    • Dallas/Fort Worth (DFW) - 17% of one-stop connections
    • Orlando (MCO) - 11% of one-stop connections
    • Denver Intl (DEN) - 9% of one-stop connections

  • Can I save money by using flexible dates for flights from Houston George Bush Intcntl Airport to St. Louis?

    Yes. Flexible dates can save you up to 57% on flights from Houston George Bush Intcntl Airport to St. Louis. Wednesday is the cheapest departure day at $328 round-trip on average, while Monday is the most expensive at $754, a difference of $426.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from Houston George Bush Intcntl Airport to St. Louis?

    Only United Airlines operates flights between Houston George Bush Intcntl Airport and St. Louis.

  • How much time can I save by choosing a different layover airport from Houston George Bush Intcntl Airport to St. Louis?

    Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time at 4h 16m, compared with 9h 03m via Atlanta Hartsfield-Jackson (ATL) and 11h 34m via Orlando (MCO).

  • What popular places can I visit in St. Louis?

    Some of the most popular sights in St. Louis are Busch Stadium, Enterprise Center and America's Center Convention Complex. These are among the most viewed places in St. Louis on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Houston George Bush Intcntl Airport to St. Louis flights?

    Among airlines operating Houston George Bush Intcntl Airport to St. Louis flights:

    • United Airlines: offers extra legroom; offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Houston George Bush Intcntl Airport to St. Louis flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • United Airlines: a cabin bag and a checked bag in Economy Class
    • JetBlue: a cabin bag in Economy Class class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

  • What are the transport options from STL to downtown St. Louis?

    Hop on the RED line MetroLink light rail from either Exit Door 1 of Terminal 1 or the parking garage in Terminal 2 to St. Louis Proper. Alternatively, Go BEST Express links the airport to various destinations. They offer door-to-door and shared-ride shuttle services. Metered taxis are accessible from Terminal 2, close to Exit Door 12, and Terminal 1, adjacent to Exit Door 14.

  • Are there facilities for passengers towing along with their kids at STL?

    Are you traveling with children to St. Louis? Since children sometimes become agitated in airports, why not make a pit stop at St. Louis International's Play Port close to gate C3? The Play Port is a great spot for kids to blow off steam after their trip. It has transportation-themed play spaces such as an air traffic control tower, a miniature plane, and a MetroLink train.

  • What are the dining options at St. Louis Lambert International Airport (STL)?

    Visitors to STL who are hungry have several options. Grounded in Concourse A offers gourmet burgers and more. Do you prefer Artisan pizza? Pay a visit to Pizza Studio in Concourse A. Three Kings Public House, Schlafly, and Missouri Vineyards are your best bets for local cuisines and drinks. They provide a wide range of regional fare and drinks that are bound to impress.

  • What is there to do at IAH?

    If your flight from IAH to STL is delayed, why don’t you take a stroll in IAH and take in the numerous artworks by Texan-based artists displayed at the airport? These exhibits range from sculptures to photographs and can be found at Terminal D, Levels M, 2, and 1, Terminal A, Levels 1 and 2, and Terminal E's Levels 1 and 2.

Your guide to booking Houston George Bush Intcntl Airport to St. Louis flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Monday. On this route, Wednesday flights average $328, about $426 less than Monday fares (56% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 11 weeks before you fly. On this route, that window historically saves about 60% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Houston George Bush Intcntl Airport to St. Louis trip for October. Fares historically average $369 round-trip in that month - typically $304 less than the most expensive month, which is March (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Orlando Airport (MCO) can be cheaper than flying direct. The cheapest layover option averages $214 round-trip on this route - about $276 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Lambert-St Louis Airport.

    • Renaissance St. Louis Airport Hotel
    • Drury Inn & Suites St. Louis Airport
    • DoubleTree by Hilton St. Louis Airport
  • If you need to loosen up before your flight from Houston George Bush Airport (IAH), use one of the massage chairs at Terminals A, B, C, D, and E. A 5-minute deep-tissue massage is available for a modest fee. You can also indulge yourself at the Xpress Spa in Terminal A. Spa services include massages, facials, manicures, and pedicures.
  • Passengers bringing their four-legged buddy to IAH will be glad to hear that pet relief zones are both within and outside the primary terminals. These include locations near Gate B1 in Terminal B and Gate E12 in Terminal E.
  • If you are booking a flight from Houston George Bush Airport to St. Louis (STL), you are most likely to fly into STL. The airport features two terminals (1 and 2) with five concourses, A-E. STL offers a complimentary shuttle service that operates every 8-12min between the two terminals, stopping at the BusPort in between terminal stops. Shuttles depart from Exit Door 12 of either terminal.
  • Many passengers like to lounge as they wait for their plane to depart. The United Club has locations in Terminals A, B, C, and E, and the KLM Lounge and Centurion Lounge in Terminal D of IAH. All are easily accessible on paid entry.
  • Single-stop flights from George Bush Intercontinental Airport (IAH) to St. Louis are eco-friendlier than direct flights. Approximately 1,017 kg of carbon is emitted per person on this route. American Airlines is the most-sustainable airline on this route, which releases 53% less carbon.

Prefer to fly direct from Houston George Bush Airport to St. Louis?

 
Find which airlines fly direct from Houston George Bush Intcntl Airport to Lambert-St Louis Airport, which days they fly and book direct flights.

Direct departures

Houston George Bush Intcntl to Lambert-St Louis

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Lambert-St Louis to Houston George Bush Intcntl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

More options for your flight from George Bush Intcntl to St. Louis

Complete your trip to St. Louis with a hotel stay or car rental