$180 Cheap Delta flights St. Louis (STL) to Great Falls (GTF)

You can discover cheap return Delta Air Lines flights from $360 from STL to GTF by organizing your results from “Price (lowest to highest)” on Expedia. Or search for deals from $180 for a one-way journey.**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.

Browse for return or one-way flights to Great Falls in January or February. You could find a cheap fare with Delta Air Lines during these off-peak travel months.

To find cheap Delta Air Lines fares from Lambert-St. Louis Intl. Airport (STL) to Great Falls Intl. Airport (GTF), 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 influence the cost. Sunday tends to be the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey 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.

To find out if there’s a direct trip from STL to GTF with Delta Air Lines or any other airlines, select the “Nonstop” filter when browsing for flights.

Browse Delta Air Lines’s earliest flights from STL to GTF by checking the “Morning” and “Early Morning” filters. Not only will you get to where you’re going sooner, early departures are also 20% less likely to be canceled.**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.

Great Falls Intl. Airport (GTF) is the primary Great Falls gateway for Delta Air Lines flights from Lambert-St. Louis Intl. Airport (STL).

Heading from STL to GTF with Delta Air Lines means enjoying a range of perks, such as a rewarding loyalty program and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to spend on select future travel purchases. That’s on top of the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

It’s generally possible to cancel or change your flight, although there may be a charge if you made your booking more than 24 hours ago. Prefer to keep your options open? Use our “Changes included” and “No cancel fee” filters to find flights that won’t penalize you if you have to revise your plans. To modify your booking, head to “Trips,” select your flight and click on “Manage Booking” for more information.