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San Juan

$429+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — SJU
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
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 March 31, 2025.

Round-trip from

$429
(American Airlines)

Popular in

December

Cheapest in

April

Average price

$654
From Rapid City to San Juan
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($90 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($43 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
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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 March 31, 2025.

This American Airlines deal was found by Cheapflights users on 3/31. 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.
Sun 5/184:35 pmRAP - SJU
1 stop10h 37mAmerican Airlines
Sat 5/313:35 pmSJU - RAP
2 stops21h 44mAmerican Airlines
Deal found 3/31$429
This United Airlines deal was found by Cheapflights users on 3/31. 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 4/295:15 amRAP - SJU
1 stop10h 15mUnited Airlines
Tue 5/67:45 amSJU - RAP
2 stops16h 31mUnited Airlines
Deal found 3/31$455
This Mytrip deal was found by Cheapflights users on 3/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1810:12 pmRAP - SJU
2 stops22h 23mMultiple Airlines
Fri 5/301:33 amSJU - RAP
2 stops45h 44mMultiple Airlines
Deal found 3/31$628

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 March 31, 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

Sun 5/18

4:35 pm-5:12 am

1 stop10h 37m

San Juan Luis Munoz Marin Intl

Sat 5/31

3:35 pm-11:19 am

2 stops21h 44m

$429

Rapid CitySan Juan

RAP - SJU

RAPSJU

Rapid City

Tue 4/29

5:15 am-5:30 pm

1 stop10h 15m

San Juan Luis Munoz Marin Intl

Tue 5/6

7:45 am-10:16 pm

2 stops16h 31m

$455

Rapid CitySan Juan

RAP - SJU

RAPSJU

Rapid City

Sun 5/18

10:12 pm-10:35 pm

2 stops22h 23m

San Juan Luis Munoz Marin Intl

Fri 5/30

1:33 am-9:17 pm

2 stops45h 44m

$628

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

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

Rainfall in San Juan by month

Plan your trip to San Juan by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit San Juan when rainfall is around 2.2 in.

Temperature in San Juan by month

Plan your trip to San Juan by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

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 March 31, 2025.
United Airlines
7.4
Good
8,614 reviews

Crew

8.1

Entertainment

7.0

Food

6.6

Comfort

7.3

Overall

7.4

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
8,614 reviews
United Airlines
7.4
Good
8,614 reviews

Crew

8.1

Entertainment

7.0

Food

6.6

Comfort

7.3

Overall

7.4

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
8,614 reviews

Crew

8.1

Entertainment

7.0

Food

6.6

Comfort

7.3

Overall

7.4

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.

  • 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 $429. Another option worth looking into is United Airlines, starting at $455 round trip. These flights start at 30% 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 December is currently the most expensive (average of $336). 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.
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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$328Average$774FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$334Average$526FlexibilityNo cancel feeOn-time71%
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