RAP to SFO, Rapid City Regional Airport to San Francisco International Airport Cheap Flights

Based on HopeGoo data, Delta Air Lines offers one-way fares as low as US$208 on Cheapest nonstop routes (e.g. RAP to SFO on Wed, Apr 22), while Delta Air Lines offers Cheapest nonstop round-trips from US$304 departing on Tue, Mar 3 and returning on Sat, Mar 7.

At the moment, several airlines serve connecting flights from Rapid City to San Francisco, including: United Airlines Selected airlines are based on historical data collected from flight bookings made by users on HopeGoo within the last 90 days.

By analyzing data from all airlines on the HopeGoo flight calendar, it looks like the best time to book a flight from Rapid City to San Francisco is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

To find best deals on flights from Rapid City to San Francisco, you can use various tools on HopeGoo: · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Apr 22, with one-way flights priced at just US$208. · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Delta Air Lines. · Set up price alerts to easily monitor ticket prices without having to check every day. · Check HopeGoo flight deals and promo codes frequently. · Avoid peak season unless you book very early. It seems the peak season for San Francisco travel is around December. · Get exclusive promo codes for HopeGoo app users.

The cheapest months to fly from Rapid City to San Francisco is August, when demand for travel is lower.

After crunching the numbers on our February flight calendar, it's currently cheapest to fly from Rapid City to San Francisco on February 28, 2026 with Delta Air Lines, with prices starting at US$268.

You can land at any one of the following hubs in San Francisco, with Rapid City Regional Airport to San Francisco International Airport (RAP-SFO) is by far the most common option on this route: San Francisco International Airport (SFO).

The time difference between San Francisco and Rapid City is 1h.

Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your HopeGoo, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.