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San Juan

$446+ Cheap flights from Rapid City (RAP) to San Juan

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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — SJU
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap flight deals from Rapid City to San Juan

Cheapest flights from Rapid City to San Juan
Explore the most affordable flight options available from Rapid City to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This United Airlines deal was found by Cheapflights users on 1/19. 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 5/55:20 am
RAP
-
SJU
1 stop10h 18m
United Airlines
Fri 5/81:40 pm
SJU
-
RAP
1 stop8h 48m
United Airlines
Deal found 1/19$446
This American Airlines deal was found by Cheapflights users on 1/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/81:08 pm
RAP
-
SJU
1 stop7h 53m
American Airlines
Sun 4/125:45 am
SJU
-
RAP
2 stops18h 13m
American Airlines
Deal found 1/19$531
This United Airlines deal was found by Cheapflights users on 1/19. 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.
Thu 2/265:20 am
RAP
-
SJU
2 stops12h 40m
United Airlines
Tue 3/38:05 am
SJU
-
RAP
2 stops15h 39m
United Airlines
Deal found 1/19$586
This American Airlines deal was found by Cheapflights users on 1/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/265:31 am
RAP
-
SJU
1 stop15h 00m
American Airlines
Tue 3/312:46 pm
SJU
-
RAP
2 stops13h 05m
American Airlines
Deal found 1/19$626
This United Airlines deal was found by Cheapflights users on 1/20. 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 2/48:00 am
RAP
-
SJU
2 stops13h 36m
United Airlines
Sat 2/72:05 am
SJU
-
RAP
2 stops16h 17m
United Airlines
Deal found 1/20$743
This United Airlines deal was found by Cheapflights users on 1/20. 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 3/177:00 am
RAP
-
SJU
2 stops14h 36m
United Airlines
Tue 3/247:05 am
SJU
-
RAP
2 stops15h 29m
United Airlines
Deal found 1/20$1,036

Find flight deals from Rapid City to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Rapid City (RAP) to San Juan (PR1). 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 January 21, 2026.

Round-trip from

$446
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$373
From Rapid City to San Juan
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($163 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 13% potential price decrease ($76 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Rapid City to San Juan 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 January 21, 2026.
Use the filters below to find and compare flights from Rapid City to San Juan that are best for you.

Fly from

Rapid City

Fly to

San Juan

Route

Depart

Return

Price

Rapid CitySan Juan

RAP - SJU

RAPSJU

Rapid City

Wed 4/8

1:08 pm-11:01 pm

1 stop7h 53m

San Juan Luis Munoz Marin Intl

Sun 4/12

5:45 am-9:58 pm

2 stops18h 13m

$531

Rapid CitySan Juan

RAP - SJU

RAPSJU

Rapid City

Thu 2/26

5:20 am-9:00 pm

2 stops12h 40m

San Juan Luis Munoz Marin Intl

Tue 3/3

8:05 am-8:44 pm

2 stops15h 39m

$586

Rapid CitySan Juan

RAP - SJU

RAPSJU

Rapid City

Thu 2/26

5:31 am-11:31 pm

1 stop15h 00m

San Juan Luis Munoz Marin Intl

Tue 3/3

12:46 pm-10:51 pm

2 stops13h 05m

$626

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

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

Have a flexible travel schedule? Discover the best time to fly to San Juan 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 Juan
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. 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 Juan. Reviews last updated January 21, 2026.
Read reviews from past customers who have flown United Airlines and American Airlines from Rapid City to San Juan. 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.
United Airlines
7.4
Good
9,191 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,191 reviews
United Airlines
7.4
Good
9,191 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.2
Good
11,174 reviews
United Airlines
7.4
Good
9,191 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

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

  • What airport do you fly from for flights from Rapid City to San Juan?

    For a flight from Rapid City to San Juan, you will be flying from Rapid City. Rapid City (RAP) is just 9.0 mi from the center of the city. Rapid City is the only Rapid City airport and it handles 0 outbound flights to San Juan per day. 2 airlines have flights to San Juan from Rapid City on a regular basis.

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

    American Airlines and United Airlines can get you from Rapid City to San Juan in just under 7h 53m. Your travel time can differ by up to 4h 47m. The distance between Rapid City and San Juan is about 2774 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 Juan round-trip?

    Flying on United Airlines is currently your cheapest option to San Juan, with prices starting at $373. Another option worth looking into is American Airlines, starting at $375 round trip. These flights start at 41% lower than the current average price 3 months from now.

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

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

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

    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 Juan.

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

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

See more FAQs

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Alternative routes for Rapid City to San Juan

See prices for flight routes from nearby airports that may be better suited for you.
Sioux Falls to Luis Munoz Marin Intl flights
Rapid City to Luis Munoz Marin Intl flights

Top 2 airlines flying from Rapid City to San Juan

Discover the top 2 airlines that operate flights from Rapid City to San Juan. 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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$373Average$758FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$375Average$590FlexibilityNo cancel feeOn-time71%

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