Trip.com
>
Flights
>
Flights to United States
>
Flights to Texas
>
Flights to Houston
>
St. Louis to Houston flight
>
St. Louis Lambert International Airport to George Bush Intercontinental Airport flight

Explore the cheapest one-way and round-trip flights from St. Louis Lambert International Airport to George Bush Intercontinental Airport over the next 90 days, with one-way fares from US$47 and round-trip from US$149. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        STL 14:55
        2h 24m
        Nonstop
        IAH 17:19
        St. Louis - Houston | Sat, Oct 31 | United Airlines
        HOU 17:30
        2h
        Nonstop
        STL 19:30
        Houston - St. Louis | Tue, Nov 3 |
        US$247 US$343
        28% off
        28% off
        US$343 US$247
      • STL 06:15
        2h 12m
        Nonstop
        IAH 08:27
        St. Louis - Houston | Thu, Oct 15 | United Airlines
        HOU 07:15
        2h
        Nonstop
        STL 09:15
        Houston - St. Louis | Mon, Oct 19 |
        US$260 US$343
        24% off
        24% off
        US$343 US$260
      • STL 16:19
        8h 21m
        1 stop
        IAH 00:40
        St. Louis - Houston | Wed, Oct 21 | Frontier Airlines
        IAH 22:40
        20h 17m
        1 stop
        STL 18:57
        Houston - St. Louis | Fri, Oct 23 | Frontier Airlines
        US$149 US$343
        56% off
        56% off
        US$343 US$149
      • STL 13:28
        15h 42m
        1 stop
        IAH 05:10
        St. Louis - Houston | Mon, Nov 9 | Frontier Airlines
        IAH 12:19
        5h 21m
        1 stop
        STL 17:40
        Houston - St. Louis | Wed, Nov 11 | Frontier Airlines
        US$150
        56% off
        US$343 US$150
      • STL 17:59
        6h 26m
        1 stop
        IAH 00:25
        St. Louis - Houston | Sat, Nov 21 | Frontier Airlines
        IAH 20:19
        27h 40m
        1 stop
        STL 23:59
        Houston - St. Louis | Mon, Nov 23 | Frontier Airlines
        US$165
        52% off
        US$343 US$165
      • STL 19:59
        13h 53m
        1 stop
        IAH 09:52
        St. Louis - Houston | Fri, Nov 6 | Frontier Airlines
        IAH 12:19
        5h 21m
        1 stop
        STL 17:40
        Houston - St. Louis | Wed, Nov 11 | Frontier Airlines
        US$174
        49% off
        US$343 US$174
      • STL 13:28
        15h 42m
        1 stop
        IAH 05:10
        St. Louis - Houston | Mon, Nov 16 | Frontier Airlines
        IAH 21:43
        17h 40m
        1 stop
        STL 15:23
        Houston - St. Louis | Tue, Nov 17 | Frontier Airlines
        US$175
        49% off
        US$343 US$175
      • STL 16:30
        16h 57m
        1 stop
        IAH 09:27
        St. Louis - Houston | Thu, Oct 22 | Frontier Airlines
        IAH 06:05
        11h 35m
        1 stop
        STL 17:40
        Houston - St. Louis | Mon, Oct 26 | Frontier Airlines
        US$179
        48% off
        US$343 US$179
      • STL 14:29
        8h 1m
        1 stop
        IAH 22:30
        St. Louis - Houston | Wed, Oct 7 | Frontier Airlines
        IAH 12:07
        5h 33m
        1 stop
        STL 17:40
        Houston - St. Louis | Wed, Oct 14 | Frontier Airlines
        US$180
        48% off
        US$343 US$180
      • STL 16:30
        29h 8m
        1 stop
        IAH 21:38
        St. Louis - Houston | Thu, Oct 8 | Frontier Airlines
        IAH 20:35
        26h 38m
        1 stop
        STL 23:13
        Houston - St. Louis | Thu, Oct 15 | Frontier Airlines
        US$184
        46% off
        US$343 US$184
      • STL 19:42
        13h 54m
        1 stop
        IAH 09:36
        St. Louis - Houston | Sat, Oct 10 | Frontier Airlines
        IAH 10:31
        8h 26m
        1 stop
        STL 18:57
        Houston - St. Louis | Sat, Oct 17 | Frontier Airlines
        US$187
        45% off
        US$343 US$187
      • STL 19:59
        13h 53m
        1 stop
        IAH 09:52
        St. Louis - Houston | Fri, Oct 30 | Frontier Airlines
        IAH 06:40
        8h 43m
        1 stop
        STL 15:23
        Houston - St. Louis | Wed, Nov 4 | Frontier Airlines
        US$190
        45% off
        US$343 US$190
      • STL 19:42
        13h 54m
        1 stop
        IAH 09:36
        St. Louis - Houston | Sat, Oct 24 | Frontier Airlines
        IAH 16:49
        19h 44m
        1 stop
        STL 12:33
        Houston - St. Louis | Thu, Oct 29 | Frontier Airlines
        US$192
        44% off
        US$343 US$192
      • STL 13:00
        17h 25m
        1 stop
        HOU 14:00
        St. Louis - Houston | Wed, Oct 7 | Normal Airline
        HOU 15:00
        6h
        Nonstop
        STL 16:00
        Houston - St. Louis | Fri, Oct 9 | Normal Airline
        More cheap flights
        More cheap flights
      • Cheapest nonstop
        STL 15:12
        2h 13m
        Nonstop
        IAH 17:25
        St. Louis - Houston | Mon, Oct 19 | United Airlines
        US$142 US$189
        25% off
        25% off
        US$189 US$142
      • STL 06:15
        2h 12m
        Nonstop
        IAH 08:27
        St. Louis - Houston | Wed, Oct 7 | United Airlines
        US$143 US$189
        24% off
        24% off
        US$189 US$143
      • STL 18:34
        27h 39m
        1 stop
        IAH 22:13
        St. Louis - Houston | Mon, Nov 9 | Frontier Airlines
        US$47 US$189
        75% off
        75% off
        US$189 US$47
      • STL 18:44
        12h 39m
        1 stop
        IAH 07:23
        St. Louis - Houston | Wed, Nov 4 | Frontier Airlines
        US$48
        75% off
        US$189 US$48
      • STL 18:44
        16h 50m
        1 stop
        IAH 11:34
        St. Louis - Houston | Mon, Nov 2 | Frontier Airlines
        US$53
        72% off
        US$189 US$53
      • STL 18:44
        12h 39m
        1 stop
        IAH 07:23
        St. Louis - Houston | Wed, Oct 28 | Frontier Airlines
        US$55
        71% off
        US$189 US$55
      • STL 18:35
        12h 44m
        1 stop
        IAH 07:19
        St. Louis - Houston | Fri, Oct 23 | Frontier Airlines
        US$56
        70% off
        US$189 US$56
      • STL 18:44
        12h 39m
        1 stop
        IAH 07:23
        St. Louis - Houston | Fri, Nov 6 | Frontier Airlines
        US$56
        70% off
        US$189 US$56
      • STL 14:29
        8h 1m
        1 stop
        IAH 22:30
        St. Louis - Houston | Wed, Oct 7 | Frontier Airlines
        US$59
        69% off
        US$189 US$59
      • STL 18:35
        17h 15m
        1 stop
        IAH 11:50
        St. Louis - Houston | Mon, Nov 30 | Frontier Airlines
        US$60
        68% off
        US$189 US$60
      • STL 18:35
        12h 44m
        1 stop
        IAH 07:19
        St. Louis - Houston | Mon, Oct 19 | Frontier Airlines
        US$63
        67% off
        US$189 US$63
      • STL 18:44
        12h 39m
        1 stop
        IAH 07:23
        St. Louis - Houston | Wed, Nov 18 | Frontier Airlines
        US$64
        66% off
        US$189 US$64
      • STL 18:35
        12h 48m
        1 stop
        IAH 07:23
        St. Louis - Houston | Mon, Oct 26 | Frontier Airlines
        US$66
        65% off
        US$189 US$66
      • STL 18:44
        27h 9m
        1 stop
        IAH 21:53
        St. Louis - Houston | Fri, Oct 30 | Frontier Airlines
        US$88
        53% off
        US$189 US$88
      • STL 13:00
        17h 25m
        1 stop
        HOU 14:00
        St. Louis - Houston | Wed, Oct 7 | Normal Airline
        More cheap flights
        More cheap flights

Displayed flight fares from St. Louis Lambert International Airport to George Bush Intercontinental Airport are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Which airline offers the cheapest flights from St. Louis Lambert International Airport to George Bush Intercontinental Airport?

The cheapest airline flying from St. Louis Lambert International Airport to George Bush Intercontinental Airport is Frontier Airlines (from US$50) among 4 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From US$50
Delta Air Lines
From US$94
American Airlines
From US$119
United Airlines
From US$141

Find more flights and airlines

What is the flight schedule from St. Louis Lambert International Airport to George Bush Intercontinental Airport?

Check on the flight schedule from St. Louis to Houston to find the flight that matches your travel plan.

Flight info.
Departure
Arrival
Weekly Schedule

  1. AA1959

    St. Louis Lambert International Airport

    08:30

    STL

    2h

    Nonstop

    10:30

    DFW

    S M T W T F S
    Search

  2. AA1397

    Dallas Fort Worth International Airport

    12:04

    DFW

    1h 13m

    Nonstop

    13:17

    IAH

    S - T W T F S

  3. AA2761

    St. Louis Lambert International Airport

    18:43

    STL

    2h 2m

    Nonstop

    20:45

    DFW

    S M T W T F S
    Search

  4. AA3023

    Dallas Fort Worth International Airport

    22:46

    DFW

    1h 12m

    Nonstop

    23:58

    IAH

    S M T W T F S

  5. AA2299

    St. Louis Lambert International Airport

    12:47

    STL

    1h 55m

    Nonstop

    14:42

    DFW

    - M T - - F -
    Search

  6. AA3481

    Dallas Fort Worth International Airport

    18:02

    DFW

    1h 24m

    Nonstop

    19:26

    IAH

    S M T W T F S

  7. AA2208

    St. Louis Lambert International Airport

    11:31

    STL

    1h 28m

    Nonstop

    12:59

    ORD

    S M T W T F S
    Search

  8. AA3039

    O'Hare International Airport

    13:50

    ORD

    2h 53m

    Nonstop

    16:43

    IAH

    S M T W T F S

  9. AA1926

    St. Louis Lambert International Airport

    07:23

    STL

    1h 27m

    Nonstop

    08:50

    ORD

    S M T W T F S
    Search

  10. AA2504

    O'Hare International Airport

    07:21

    ORD

    2h 53m

    Nonstop

    10:14

    IAH

    S M T W T F S

  11. DL1102

    St. Louis Lambert International Airport

    14:25

    STL

    1h 35m

    Nonstop

    17:00

    ATL

    S M T W T F S
    Search

  12. DL1284

    Hartsfield–Jackson Atlanta International Airport

    19:53

    ATL

    2h 17m

    Nonstop

    21:10

    IAH

    S M T W T F S

  13. DL1524

    St. Louis Lambert International Airport

    06:00

    STL

    1h 40m

    Nonstop

    08:40

    ATL

    S M T W T F S
    Search

  14. DL2709

    Hartsfield–Jackson Atlanta International Airport

    12:15

    ATL

    2h 18m

    Nonstop

    13:33

    IAH

    S M T W T F S

  15. F94567

    St. Louis Lambert International Airport

    19:42

    STL

    2h 27m

    Nonstop

    21:09

    DEN

    - - T - T F -
    Search

  16. F93228

    Denver International Airport

    18:36

    DEN

    2h 28m

    Nonstop

    22:04

    IAH

    S - - W T F S

  17. DL1102

    St. Louis Lambert International Airport

    14:25

    STL

    1h 35m

    Nonstop

    17:00

    ATL

    S M T W T F S
    Search

  18. DL1892

    Hartsfield–Jackson Atlanta International Airport

    20:29

    ATL

    2h 8m

    Nonstop

    21:37

    IAH

    S M T W T - S
Find more flights and airlines

About St. Louis Lambert International Airport and George Bush Intercontinental Airport

Learn about St. Louis Lambert International Airport (STL) and George Bush Intercontinental Airport (IAH) — including location, terminals, transportation, and travel tips.

Flight distance 1,076.39 km
Cheapest one-way ticket price US$47
Cheapest return ticket price US$149

FAQs for St. Louis Lambert International Airport to George Bush Intercontinental Airport Flights

  • How long is the flight from St. Louis Lambert International Airport to George Bush Intercontinental Airport?

    St. Louis Lambert International Airport to George Bush Intercontinental Airport takes about 1 hour 43 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 4 daily flights from St. Louis Lambert International Airport (STL) to George Bush Intercontinental Airport (IAH).
  • The earliest flight from St. Louis Lambert International Airport to George Bush Intercontinental Airport departs at 06:15, and the last departs at 15:13, with about 9 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from St. Louis Lambert International Airport (STL) to George Bush Intercontinental Airport (IAH) is quite popular. Without considering departure times or holidays, tickets cost around US$328 in October, the most expensive month to book this route.
  • The earliest flight departs from St. Louis Lambert International Airport at 06:15 and arrives in George Bush Intercontinental Airport at 08:34.
  • The latest flight departs from St. Louis Lambert International Airport at 17:11 and arrives in George Bush Intercontinental Airport at 19:28.
  • United Airlines is a very popular airline operating an average of 807 flights per month.
  • One-way flights from St. Louis Lambert International Airport to George Bush Intercontinental Airport currently start from US$47, and round-trip fares start from US$149. The current lowest fare is a Frontier Airlines flight departing on Mon, Nov 9; prices may vary depending on availability.
  • Yes. United Airlines operate direct flights from St. Louis Lambert International Airport to George Bush Intercontinental Airport, with an average flight time of 1 hour 37 minutes, and around 27 weekly flights. Actual flight frequency may vary by season.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from St. Louis Lambert International Airport to George Bush Intercontinental Airport is US$202. Prices may vary depending on the departure date, airline, and availability.
  • St. Louis Lambert International Airport to George Bush Intercontinental Airport operates around 27 weekly flights, mainly by United Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter St. Louis Lambert International Airport and George Bush Intercontinental Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

Popular Destinations

Note: Prices shown on this page are the estimated lowest prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.