$181 Cheap Delta flights Seattle (SEA) to Rapid City (RAP)

Landing cheap one-way Delta Air Lines flights from SEA to RAP from $181 on Expedia is easy --- just filter by "Price (lowest to highest)." Or check out our budget-friendly round-trip fares from $269 for your next adventure.**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.

To find cheap Delta Air Lines fares from Seattle - Tacoma Intl. Airport (SEA) to Rapid City Regional Airport (RAP), start searching one to three months before your intended departure. Reserving 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 what you pay. Sunday tends to be the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your flight 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.

Search Delta Air Lines's earliest flights from SEA to RAP by using the "Early Morning" and "Morning" filters. Not only will you arrive sooner, early departures also have a 20% less chance of being 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.

Delta Air Lines makes flying from SEA to RAP enjoyable with a rewarding loyalty program and an excellent in-flight experience. You may even earn points with Delta SkyMiles. Don't forget to join 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.