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San Juan

$505+ 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — SJU
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheap 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 August 20, 2025.

Round-trip from

$505
(United Airlines)

Popular in

December

Cheapest in

April
From Rapid City to San Juan
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($228 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($64 potential savings vs. average RT price).
Search Deals

Find 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 August 20, 2025.

This United Airlines deal was found by Cheapflights users on 8/17. 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 9/168:32 amRAP - SJU
2 stops13h 25mUnited Airlines
Mon 9/221:05 amSJU - RAP
2 stops11h 17mUnited Airlines
Deal found 8/17$505
This American Airlines deal was found by Cheapflights users on 8/18. 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 11/55:34 amRAP - SJU
1 stop13h 01mAmerican Airlines
Sun 11/96:00 amSJU - RAP
2 stops18h 17mAmerican Airlines
Deal found 8/18$618
This United Airlines deal was found by Cheapflights users on 8/18. 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 11/58:45 amRAP - SJU
2 stops12h 51mUnited Airlines
Sat 11/82:05 amSJU - RAP
2 stops19h 38mUnited Airlines
Deal found 8/18$805

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 August 20, 2025.
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

Tue 9/16

8:32 am-11:57 pm

2 stops13h 25m

San Juan Luis Munoz Marin Intl

Mon 9/22

1:05 am-10:22 am

2 stops11h 17m

$505

Rapid CitySan Juan

RAP - SJU

RAPSJU

Rapid City

Sun 1/11

5:39 am-10:14 pm

1 stop13h 35m

San Juan Luis Munoz Marin Intl

Sun 1/18

6:45 am-8:11 pm

1 stop16h 26m

$515

Rapid CitySan Juan

RAP - SJU

RAPSJU

Rapid City

Wed 11/5

2:20 pm-1:41 pm

2 stops20h 21m

San Juan Luis Munoz Marin Intl

Sun 11/9

6:00 am-9:17 pm

2 stops18h 17m

$618

Rapid CitySan Juan

RAP - SJU

RAPSJU

Rapid City

Sun 1/11

7:05 am-4:36 pm

2 stops30h 31m

San Juan Luis Munoz Marin Intl

Sat 1/17

2:05 am-5:07 pm

2 stops18h 02m

$725

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

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 August 20, 2025.
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
8,928 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Crew

8.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,928 reviews
United Airlines
7.4
Good
8,928 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Crew

8.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,928 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Crew

8.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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?

    United Airlines and American Airlines can get you from Rapid City to San Juan in just under 13h 25m. Your travel time can differ by up to 10m. 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 American Airlines is currently your cheapest option to San Juan, with prices starting at $375. Another option worth looking into is United Airlines, starting at $464 round trip. These flights start at 43% 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.

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

    Currently, September is the cheapest month in which you can book a flight from Rapid City to San Juan (average of $254). Flying from Rapid City to San Juan in June is currently the most expensive (average of $339). 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

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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.
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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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$375Average$429FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$464Average$770FlexibilityNo cancel feeOn-time69%

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