HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$259+ Cheap flights from Rapid City to San Diego (RAP - SAN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — SAN
Oct 29 — Nov 51
Wed 10/29
Wed 11/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Rapid City to San Diego with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Rapid City to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Rapid City (RAP) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$259
(United Airlines)

Popular in

November

Cheapest in

June

Average price

$338
Provider with most accurate pricing for Rapid City-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Rapid City-San Diego flights.
Search Deals
From Rapid City to San Diego
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($78 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Rapid City to San Diego

Cheapest flights from Rapid City to San Diego
Explore the most affordable flight options available from Rapid City to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 29, 2025.

This United Airlines deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/189:00 amRAP - SAN
1 stop6h 59mUnited Airlines
Sat 10/259:01 amSAN - RAP
1 stop4h 44mUnited Airlines
Deal found 9/27$259
This Delta deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/186:05 amRAP - SAN
1 stop7h 50mDelta
Sat 10/2511:44 amSAN - RAP
2 stops9h 52mDelta
Deal found 9/27$264
This United Airlines deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/144:35 pmRAP - SAN
2 stops8h 06mUnited Airlines
Sat 10/186:53 amSAN - RAP
1 stop4h 44mUnited Airlines
Deal found 9/28$294
This United Airlines deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/174:35 pmRAP - SAN
1 stop6h 40mUnited Airlines
Tue 10/216:53 amSAN - RAP
1 stop4h 44mUnited Airlines
Deal found 9/27$354
This United Airlines deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1511:15 amRAP - SAN
1 stop7h 03mUnited Airlines
Mon 10/276:47 pmSAN - RAP
1 stop18h 56mUnited Airlines
Deal found 9/27$407
This Delta deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/216:05 amRAP - SAN
2 stops13h 06mDelta
Mon 12/110:00 pmSAN - RAP
2 stops11h 22mDelta
Deal found 9/28$413

Cheapflights Fare Finder

 
Customize your flight search to find flights from Rapid City to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 29, 2025.
Use the filters below to find and compare flights from Rapid City to San Diego that are best for you.

Fly from

Rapid City

Fly to

San Diego

Route

Depart

Return

Price

Rapid CitySan Diego

RAP - SAN

RAPSAN

Rapid City

Sat 10/18

6:05 am-12:55 pm

1 stop7h 50m

San Diego

Sat 10/25

11:44 am-10:36 pm

2 stops9h 52m

$264

Rapid CitySan Diego

RAP - SAN

RAPSAN

Rapid City

Tue 10/14

4:35 pm-11:41 pm

2 stops8h 06m

San Diego

Sat 10/18

6:53 am-12:37 pm

1 stop4h 44m

$294

Rapid CitySan Diego

RAP - SAN

RAPSAN

Rapid City

Fri 10/17

4:35 pm-10:15 pm

1 stop6h 40m

San Diego

Tue 10/21

6:53 am-12:37 pm

1 stop4h 44m

$354

Rapid CitySan Diego

RAP - SAN

RAPSAN

Rapid City

Mon 11/3

4:34 pm-11:27 pm

1 stop7h 53m

San Diego

Tue 11/4

1:45 pm-10:36 pm

1 stop7h 51m

$389

Rapid CitySan Diego

RAP - SAN

RAPSAN

Rapid City

Tue 11/4

4:34 pm-11:27 pm

1 stop7h 53m

San Diego

Wed 11/5

1:45 pm-10:36 pm

1 stop7h 51m

$389

Rapid CitySan Diego

RAP - SAN

RAPSAN

Rapid City

Mon 11/3

8:45 am-3:00 pm

1 stop7h 15m

San Diego

Tue 11/4

12:43 pm-8:26 pm

1 stop6h 43m

$389

Rapid CitySan Diego

RAP - SAN

RAPSAN

Rapid City

Mon 10/13

5:50 pm-10:15 pm

1 stop5h 25m

$271

Rapid CitySan Diego

RAP - SAN

RAPSAN

Rapid City

Thu 10/9

5:30 am-9:12 am

1 stop4h 42m

$296

Rapid CitySan Diego

RAP - SAN

RAPSAN

Rapid City

Thu 10/9

2:26 pm-11:58 pm

2 stops10h 32m

$301

Rapid CitySan Diego

RAP - SAN

RAPSAN

Rapid City

Mon 10/13

6:05 am-3:19 pm

2 stops10h 14m

$404

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/29

Showing 1-10 of 11 results
1
2

Compare providers for flights from Rapid City to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Rapid City to San Diego in September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Rapid City-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Rapid City-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Rapid City-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Rapid City-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Rapid City-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Rapid City to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Rapid City with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Rapid City to San Diego

What is the cheapest month to book a flight from Rapid City to San Diego?

Currently, August is the cheapest month in which you can book a flight from Rapid City to San Diego (average of $286). Flying from Rapid City to San Diego in March is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated September 29, 2025.
Read reviews from past customers who have flown Delta and United Airlines from Rapid City to San Diego. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,964 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,964 reviews
Delta
8.0
Very good
7,964 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,924 reviews
Delta
8.0
Very good
7,964 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Rapid City to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Rapid City to San Diego?

    Airlines like Delta and United Airlines fly from Rapid City to San Diego in about 7h 50m. The time it takes to get you to your destination can typically vary by up to 16m. Rapid City and San Diego are separated by a distance of 1090 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Rapid City to San Diego round-trip?

    Cheapflights users have booked flights from Rapid City to San Diego round-trip from $184. Another airline that can offer you cheap pricing is Delta. United Airlines is priced at 52% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Rapid City to San Diego that include hotel bookings?

    Yes. In addition to deals on Rapid City to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Rapid City to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Rapid City to San Diego.

  • Can I find deals for business class flights from Rapid City to San Diego?

    Yes. Cheapflights offers flight deals from Rapid City to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Rapid City to San Diego?

    Currently, August is the cheapest month in which you can book a flight from Rapid City to San Diego (average of $286). Flying from Rapid City to San Diego in March is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
La Mesa
Poway
Lemon Grove
Imperial Beach
National City

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Rapid City to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
Sioux Falls to Las Vegas flights
Sioux Falls to Los Angeles flights
Sioux Falls to Ontario flights
Rapid City to Las Vegas flights
Sioux Falls to Sacramento flights
Sioux Falls to Palm Springs flights
Sioux Falls to San Diego flights
Sioux Falls to Santa Ana flights
Sioux Falls to San Francisco flights
Aberdeen to Las Vegas flights
Rapid City to Los Angeles flights
Sioux Falls to San Jose flights
Rapid City to Palm Springs flights
Rapid City to Sacramento flights
Sioux Falls to Burbank flights
Sioux Falls to Reno flights
Sioux Falls to Fresno flights
Rapid City to Ontario flights
Rapid City to San Jose flights
Sioux Falls to Long Beach flights
Rapid City to San Francisco flights
Sioux Falls to Oakland flights
Sioux Falls to Santa Barbara flights
Sioux Falls to Bakersfield flights
Sioux Falls to Monterey flights
Pierre to San Diego flights
Sioux Falls to Medford flights
Rapid City to Oakland flights
Rapid City to Long Beach flights
Rapid City to Burbank flights
Rapid City to Santa Ana flights
Pierre to Santa Ana flights
Rapid City to Yuma flights

Top 2 airlines flying from Rapid City to San Diego

Discover the top 2 airlines that operate flights from Rapid City to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$184Average$270FlexibilityNo cancel feeOn-time69%
DeltaCheapest$258Average$294FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.