$149 Cheap Delta flights Boston (BOS) to Kalispell (FCA)

Scoring cheap one-way Delta Air Lines flights from BOS to FCA from $149 on Expedia is simple — just filter by “Price (lowest to highest).” Alternatively, check out our budget-friendly round-trip fares from $297 for your next break.**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.

Delta Air Lines flights to Kalispell are typically more affordable in the off-peak months of January and December. Whether you need a one-way or a return ticket, you could score a better deal then.

For cheap Delta Air Lines fares from Logan Intl. Airport (BOS) to Glacier Park Intl. Airport (FCA), start searching one to three months before your planned 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 the price 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 booking your trip 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.

Fill in your dates, click search and select the “Nonstop” filter on Expedia to browse any direct flights from BOS to FCA with Delta Air Lines or another airline.

Sort your results by “Early Morning” and “Morning” to find the earliest flights from BOS to FCA. Heading off early means you’re less likely to experience 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.

Catch a Delta Air Lines flight from Logan Intl. Airport (BOS) to Kalispell, and you’ll likely land at Glacier Park Intl. Airport (FCA). This is the airline’s primary hub in this city.

Offering an excellent in-flight experience and a rewarding loyalty program, Delta Air Lines is a top choice for many passengers flying from BOS to FCA. Plus, if you’re a Delta SkyMiles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be used on future getaways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are usually free within 24 hours of making a booking, but your airline may charge a fee after that. For more details about modifying your flights, check out your “Trips,” select your flight and click on “Manage Booking.” If you’d like the flexibility to change your plans without being charged, check the “Changes included” and “No cancel fee” filters when planning your next adventure.