$119 Cheap Delta flights Houston (IAH) to St. Louis (STL)

View $119 flight on Wed, Oct 29, 2025Opens in a new window

$119 Cheap Delta flights Houston (IAH) to St. Louis (STL)

Prices were available within the past 7 days and start at $119 for one-way flights and $208 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Oct 1 - Sun, Oct 5
IAH
Houston
STL
St. Louis
$208 Roundtrip, found 5 days ago
$208
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Oct 1 from Houston to St. Louis, returning Sun, Oct 5, priced at $208 found 5 days ago
Delta
Tue, Nov 11 - Sat, Nov 15
IAH
Houston
STL
St. Louis
$237 Roundtrip, found 2 hours ago
$237
Roundtrip
found 2 hours ago
Select Delta flight, departing Tue, Nov 11 from Houston to St. Louis, returning Sat, Nov 15, priced at $237 found 2 hours ago
Flights from Houston (IAH) to St. Louis (STL)
Origin airport
George Bush Intercontinental
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, Spirit Airlines, United
Popular airline
American Airlines
Distance
667 mi
Average flight time
2 hours 11 mins

Frequently asked questions

How much is a Delta Air Lines flight from George Bush Intercontinental Airport (IAH) to Lambert-St. Louis Intl. Airport (STL)?
You'll discover cheap return Delta Air Lines flights from $208 from IAH to STL by sorting your results from "Price (lowest to highest)" on Expedia. Or look for bargains from $119 for a one-way trip.**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 IAH to STL with Delta Air Lines?
January is one of the most affordable months to travel to St. Louis with Delta Air Lines. You could also find great prices on one-way and return fares in February.
What is the cheapest time to book flights from George Bush Intercontinental Airport (IAH) to Lambert-St. Louis Intl. Airport (STL) with Delta Air Lines?
For cheap Delta Air Lines fares from George Bush Intercontinental Airport (IAH) to Lambert-St. Louis Intl. Airport (STL), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact what you pay. Sunday is generally the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by choosing to book on a Sunday.**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 George Bush Intercontinental Airport (IAH) to Lambert-St. Louis Intl. Airport (STL)?
Select our "Nonstop" filter when searching for direct Delta Air Lines flights from IAH to STL. It's also a great way to compare other carriers offering the same nonstop trip.
What is the earliest Delta Air Lines flight from IAH to STL?
Find Delta Air Lines's earliest flights from IAH to STL by selecting the "Early Morning" and "Morning" filters. Not only will you get to your destination sooner, early departures also experience 20% fewer cancellations.**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 St. Louis?
Lambert-St. Louis Intl. Airport (STL) is the primary St. Louis gateway for Delta Air Lines flights from George Bush Intercontinental Airport (IAH).
Why fly with Delta Air Lines from IAH to STL?
Delta Air Lines makes traveling from IAH to STL more enjoyable with a rewarding loyalty program and an excellent in-flight experience. You also have the chance to earn points with Delta SkyMiles. Remember to sign up to our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*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 George Bush Intercontinental Airport (IAH) to Lambert-St. Louis Intl. Airport (STL)?
Changes are often free within 24 hours of making a booking, but your airline may charge you after that. For more information about modifying your reservation, check out your "Trips," select your flight and click on "Manage Booking." If you'd like the flexibility to make changes without additional charges, apply the "Changes included" or "No cancel fee" filter when organizing your next adventure.

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*Available to One Key members.