$157 Cheap Delta flights St. Louis (STL) to Billings (BIL)

Landing cheap one-way Delta Air Lines flights from STL to BIL from $157 on Expedia couldn’t be simpler — just filter by “Price (lowest to highest).” Or check out our affordable return fares from $313 for your next exciting getaway.**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.

Search for one-way or return flights to Billings in January or November. You could find an affordable fare with Delta Air Lines during these off-peak times.

Search for affordable Delta Air Lines flights from Lambert-St. Louis Intl. Airport (STL) to Logan Intl. Airport (BIL) one to three months prior to your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and itinerary, the best day to book a domestic flight is generally Sunday and the most expensive day tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**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 see if there’s a direct route from STL to BIL with Delta Air Lines or any other airlines, check the “Nonstop” box when browsing for tickets.

Find Delta Air Lines’s earliest flights from STL to BIL by selecting our “Early Morning” and “Morning” filters. Not only will you arrive 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.

Logan Intl. Airport (BIL) is the primary Billings gateway for Delta Air Lines flights from Lambert-St. Louis Intl. Airport (STL).

Delta Air Lines makes traveling from STL to BIL enjoyable with an excellent in-flight experience and a rewarding loyalty program. You even have the chance to collect points with Delta SkyMiles. Be sure to sign up to our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your fare type, a fee will generally apply if you change or cancel your flight more than 24 hours after it has been confirmed. To secure flexible plane tickets, select our “Changes included” and “No cancel fee” boxes when searching for flights. For more information on changing or canceling your reservation, go to “Trips,” select your flight and click on “Manage Booking.”