$239 Cheap Delta flights Boston (BOS) to Rapid City (RAP)

Make use of the “Price (lowest to highest)” filter on Expedia to find cheap Delta Air Lines round-trip flights from $414 from BOS to RAP. Affordable one-way tickets from $239 are also available.**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 Rapid City are usually more affordable in the low-season months of January and November. Whether you’re searching for a round-trip or one-way ticket, you could land a better deal then.

To find cheap Delta Air Lines fares from Logan Intl. Airport (BOS) to Rapid City Regional Airport (RAP), 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 affect the overall price. Sunday tends to be 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.

Use our “Nonstop” filter when browsing for direct Delta Air Lines flights from BOS to RAP. It’s also a great way to compare other carriers offering the same direct route.

Sort your results by “Early Morning” and “Morning” to find the earliest departures from BOS to RAP. Setting 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.

Rapid City Regional Airport (RAP) is the main Rapid City hub for Delta Air Lines flights from Logan Intl. Airport (BOS).

With an excellent in-flight experience and a rewarding loyalty program, Delta Air Lines is a favorite for many passengers heading from BOS to RAP. Also, 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 trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

In most cases, you can cancel or reschedule your flight, although there may be a charge if you booked over 24 hours ago. Want to keep your options open? Make use of our “No cancel fee” or “Changes included” filter to find flights that won’t charge extra if you need to adjust your plans. To update your booking, go to “Trips,” select your flight and click on “Manage Booking” for more details.