$109 Cheap Delta flights St. Louis (STL) to Houston (IAH)

View $109 flight on Thu, Sep 4, 2025Opens in a new window

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$109 Cheap Delta flights St. Louis (STL) to Houston (IAH)

Prices were available within the past 7 days and start at $109 for one-way flights and $184 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Sep 17 - Sat, Sep 27
STL
St. Louis
IAH
Houston
$184 Roundtrip, found 3 hours ago
$184
Roundtrip
found 3 hours ago
Select Delta flight, departing Wed, Sep 17 from St. Louis to Houston, returning Sat, Sep 27, priced at $184 found 3 hours ago
Delta
Sat, Sep 13 - Sat, Sep 20
STL
St. Louis
IAH
Houston
$198 Roundtrip, found 10 hours ago
$198
Roundtrip
found 10 hours ago
Select Delta flight, departing Sat, Sep 13 from St. Louis to Houston, returning Sat, Sep 20, priced at $198 found 10 hours ago
Delta
Mon, Sep 15 - Thu, Sep 25
STL
St. Louis
IAH
Houston
$201 Roundtrip, found 3 hours ago
$201
Roundtrip
found 3 hours ago
Select Delta flight, departing Mon, Sep 15 from St. Louis to Houston, returning Thu, Sep 25, priced at $201 found 3 hours ago
Delta
Mon, Sep 15 - Thu, Sep 25
STL
St. Louis
IAH
Houston
$217 Roundtrip, found 3 hours ago
$217
Roundtrip
found 3 hours ago
Select Delta flight, departing Mon, Sep 15 from St. Louis to Houston, returning Thu, Sep 25, priced at $217 found 3 hours ago
Delta
Wed, Sep 17 - Sat, Sep 27
STL
St. Louis
IAH
Houston
$225 Roundtrip, found 3 hours ago
$225
Roundtrip
found 3 hours ago
Select Delta flight, departing Wed, Sep 17 from St. Louis to Houston, returning Sat, Sep 27, priced at $225 found 3 hours ago
Flights from St. Louis (STL) to Houston (IAH)
Origin airport
Lambert-St. Louis Intl.
Destination airport
George Bush Intercontinental
Airlines serving
American Airlines, Delta, Frontier Airlines, Spirit Airlines, United
Popular airline
American Airlines
Distance
667 mi
Average flight time
2 hours 12 mins

Frequently asked questions

How much is a Delta Air Lines flight from Lambert-St. Louis Intl. Airport (STL) to George Bush Intercontinental Airport (IAH)?
Set the "Price (lowest to highest)" filter on Expedia to find cheap Delta Air Lines return flights from $184 from STL to IAH. Affordable one-way tickets from $109 are available as well.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from STL to IAH with Delta Air Lines?
Look for round-trip or one-way flights to Houston in November or February. You could find a cheap fare with Delta Air Lines during these off-peak travel months.
What is the cheapest time to book flights from Lambert-St. Louis Intl. Airport (STL) to George Bush Intercontinental Airport (IAH) with Delta Air Lines?
Start searching one to three months before your departure to find cheaper fares on Delta Air Lines flights from Lambert-St. Louis Intl. Airport (STL) to George Bush Intercontinental Airport (IAH). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic journeys.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from Lambert-St. Louis Intl. Airport (STL) to George Bush Intercontinental Airport (IAH)?
Simply enter your dates, click search and tick the "Nonstop" filter on Expedia to find any direct flights from STL to IAH with Delta Air Lines or another carrier.
What is the earliest Delta Air Lines flight from STL to IAH?
Filter your results by "Morning" and "Early Morning" to browse the earliest flights from STL to IAH. Setting off early means flight cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in Houston?
Delta Air Lines flights from Lambert-St. Louis Intl. Airport (STL) to Houston arrive at George Bush Intercontinental Airport (IAH). This is the main entry point to this destination.
Why fly with Delta Air Lines from STL to IAH?
Offering an excellent in-flight experience and a rewarding loyalty program, Delta Air Lines is a top choice for many passengers flying from STL to IAH. Also, if you're a Delta SkyMiles and One Key™ member booking with Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can go toward future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Lambert-St. Louis Intl. Airport (STL) to George Bush Intercontinental Airport (IAH)?
Depending on your ticket type, a fee will generally apply if you modify or cancel your flight more than 24 hours after it's been confirmed. To secure plane tickets with more flexibility, select our "Changes included" and "No cancel fee" boxes while looking for flights. To learn more about canceling or modifying your reservation, go to "Trips," select your flight and click on "Manage Booking."

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