$175 Cheap Flights from Rapid City (RAP) to San Diego (SAN)

View $175 flight on Wed, Aug 13, 2025Opens in a new window

Popular airlines from Rapid City Regional Airport (RAP) to San Diego Intl. Airport (SAN)

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Cheap Flights from Rapid City to San Diego (RAP-SAN)

Prices were available within the past 7 days and start at $175 for one-way flights and $254 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Aug 14 - Tue, Aug 19
RAP
Rapid City
SAN
San Diego
$254 Roundtrip, found 7 hours ago
$254
Roundtrip
found 7 hours ago
Select United flight, departing Thu, Aug 14 from Rapid City to San Diego, returning Tue, Aug 19, priced at $254 found 7 hours ago
American Airlines
Fri, Aug 1 - Sat, Aug 16
RAP
Rapid City
SAN
San Diego
$259 Roundtrip, found 3 hours ago
$259
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Fri, Aug 1 from Rapid City to San Diego, returning Sat, Aug 16, priced at $259 found 3 hours ago
Delta
Sat, Sep 6 - Sat, Sep 13
RAP
Rapid City
SAN
San Diego
$259 Roundtrip, found 11 hours ago
$259
Roundtrip
found 11 hours ago
Select Delta flight, departing Sat, Sep 6 from Rapid City to San Diego, returning Sat, Sep 13, priced at $259 found 11 hours ago
American Airlines
Thu, Aug 14 - Tue, Aug 19
RAP
Rapid City
SAN
San Diego
$264 Roundtrip, found 7 hours ago
$264
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Thu, Aug 14 from Rapid City to San Diego, returning Tue, Aug 19, priced at $264 found 7 hours ago
Delta
Wed, Sep 17 - Tue, Sep 30
RAP
Rapid City
SAN
San Diego
$269 Roundtrip, found 19 hours ago
$269
Roundtrip
found 19 hours ago
Select Delta flight, departing Wed, Sep 17 from Rapid City to San Diego, returning Tue, Sep 30, priced at $269 found 19 hours ago
Delta
Thu, Aug 28 - Sat, Sep 6
RAP
Rapid City
SAN
San Diego
$274 Roundtrip, found 22 hours ago
$274
Roundtrip
found 22 hours ago
Select Delta flight, departing Thu, Aug 28 from Rapid City to San Diego, returning Sat, Sep 6, priced at $274 found 22 hours ago
Delta
Sun, Oct 19 - Wed, Oct 29
RAP
Rapid City
SAN
San Diego
$279 Roundtrip, found 19 hours ago
$279
Roundtrip
found 19 hours ago
Select Delta flight, departing Sun, Oct 19 from Rapid City to San Diego, returning Wed, Oct 29, priced at $279 found 19 hours ago
United
Wed, Aug 13 - Wed, Aug 20
RAP
Rapid City
SAN
San Diego
$282 Roundtrip, found 4 days ago
$282
Roundtrip
found 4 days ago
Select United flight, departing Wed, Aug 13 from Rapid City to San Diego, returning Wed, Aug 20, priced at $282 found 4 days ago
United
Sat, Aug 30 - Fri, Sep 5
RAP
Rapid City
SAN
San Diego
$284 Roundtrip, found 22 hours ago
$284
Roundtrip
found 22 hours ago
Select United flight, departing Sat, Aug 30 from Rapid City to San Diego, returning Fri, Sep 5, priced at $284 found 22 hours ago
Delta
Tue, Oct 14 - Wed, Oct 29
RAP
Rapid City
SAN
San Diego
$284 Roundtrip, found 19 hours ago
$284
Roundtrip
found 19 hours ago
Select Delta flight, departing Tue, Oct 14 from Rapid City to San Diego, returning Wed, Oct 29, priced at $284 found 19 hours ago

Find the cheapest month to fly from Rapid City (RAP) to San Diego (SAN)

May is typically the cheapest month to fly

From $254 - $490 per traveler.

Graph displaying average flight prices per month

Alternative airports near San Diego

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Diego Intl. SAN. Cheapest and Closest option available. Average driving time to city center is 5 minutes. Flights from $284
SAN
San Diego Intl.
CheapestClosest
Average driving time to city center5 min
Flights from $284
Flights from Rapid City (RAP) to San Diego (SAN)
Origin airport
Rapid City Regional
Destination airport
San Diego Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$254
Distance
1090 mi
Average flight time
7 hours 16 mins

Rapid City to San Diego Flights

The cheapest times to fly from Rapid City to San Diego

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Rapid City to San Diego are during the month of August. You can find some of the cheapest flights from Rapid City to San Diego with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Rapid City to San Diego

Sunday is one of the best days to book for cheap flights from Rapid City to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Rapid City to San Diego

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Rapid City to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from $175 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Rapid City to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Rapid City to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Rapid City Regional Airport (RAP) to San Diego Intl. Airport (SAN) cost?
Discover the latest flight deals from RAP to SAN by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from RAP to SAN?
The cheapest flights from RAP to SAN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from RAP to SAN?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from RAP to SAN. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Rapid City Regional Airport (RAP) to San Diego Intl. Airport (SAN)?
Nonstop flights from Rapid City Regional Airport (RAP) to San Diego Intl. Airport (SAN) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from RAP to SAN?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Rapid City Regional Airport (RAP) to San Diego Intl. Airport (SAN)?
Choose a flight from Rapid City Regional Airport (RAP) to San Diego Intl. Airport (SAN) that takes off before 3 PM to reduce the risk of cancellations and delays. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Rapid City Regional Airport (RAP) to San Diego Intl. Airport (SAN) last-minute?
Booking your flight from RAP to SAN right before your getaway is generally more expensive. But if you're flexible with your travel dates and times, you could grab a cheap last-minute fare.
Is it cheaper to book a RAP to SAN flight and hotel package?
You'll generally save money by booking a RAP to SAN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After choosing your preferred accommodations and flights, consider other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Rapid City Regional Airport (RAP) to San Diego Intl. Airport (SAN)?
Typically, you're able to cancel or reschedule your RAP to SAN flight. However, additional charges may apply, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you'd like further information, head to our Customer Service portal.

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*Available to One Key members.