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San Juan

$335+ 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 3/24. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — SJU
Nov 21 — Nov 281
Fr 11/21
Fr 11/28
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 Oktober 22, 2025.

Round-trip from

$335
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$764
From Rapid City to San Juan
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($163 potential increase over avg. RT price).
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Cheapest flight prices on average. 12% potential price decrease ($74 potential savings vs. average RT price).
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Average for round-trip flights in October 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 Oktober 22, 2025.

This American Airlines deal was found by Cheapflights users on 10/22. 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.
Mo 11/175:18 amRAP - SJU
1 stop13h 17mAmerican Airlines
Mo 11/244:56 pmSJU - RAP
2 stops23h 16mAmerican Airlines
Deal found 10/22$475
This American Airlines deal was found by Cheapflights users on 10/22. 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.
Mi 11/51:42 pmRAP - SJU
2 stops17h 35mAmerican Airlines
So 11/97:15 amSJU - RAP
1 stop17h 02mAmerican Airlines
Deal found 10/22$599
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Mo 11/175:15 amRAP - SJU
2 stops12h 45mUnited Airlines
So 11/232:05 amSJU - RAP
2 stops15h 38mUnited Airlines
Deal found 10/22$665
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Mi 11/57:10 amRAP - SJU
1 stop8h 15mUnited Airlines
Sa 11/82:05 amSJU - RAP
2 stops13h 35mUnited Airlines
Deal found 10/20$747

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 Oktober 22, 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

Di 3/24

12:35 pm-3:55 am

1 stop13h 20m

San Juan Luis Munoz Marin Intl

Di 3/31

3:45 pm-11:32 am

2 stops21h 47m

$335

Rapid CitySan Juan

RAP - SJU

RAPSJU

Rapid City

Di 3/24

5:10 am-8:00 pm

2 stops12h 50m

San Juan Luis Munoz Marin Intl

Mo 3/30

1:05 am-11:13 am

2 stops12h 08m

$462

Rapid CitySan Juan

RAP - SJU

RAPSJU

Rapid City

Di 3/3

5:37 am-1:35 pm

2 stops28h 58m

San Juan Luis Munoz Marin Intl

Mi 3/4

6:50 pm-11:31 am

2 stops19h 41m

$479

Rapid CitySan Juan

RAP - SJU

RAPSJU

Rapid City

Di 3/3

5:20 am-10:22 pm

2 stops14h 02m

San Juan Luis Munoz Marin Intl

Mi 3/4

8:10 am-8:44 pm

2 stops15h 34m

$510

Rapid CitySan Juan

RAP - SJU

RAPSJU

Rapid City

Do 3/26

12:35 pm-3:55 am

1 stop13h 20m

San Juan Luis Munoz Marin Intl

Do 4/2

3:35 pm-11:32 am

2 stops21h 57m

$515

Rapid CitySan Juan

RAP - SJU

RAPSJU

Rapid City

Mi 11/5

1:42 pm-10:17 am

2 stops17h 35m

San Juan Luis Munoz Marin Intl

So 11/9

7:15 am-9:17 pm

1 stop17h 02m

$599

Rapid CitySan Juan

RAP - SJU

RAPSJU

Rapid City

Mo 11/17

5:15 am-9:00 pm

2 stops12h 45m

San Juan Luis Munoz Marin Intl

So 11/23

2:05 am-2:43 pm

2 stops15h 38m

$665

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

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 Oktober 22, 2025.
Read reviews from past customers who have flown United 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
8,990 reviews

Crew

8.1

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,990 reviews
United Airlines
7.4
Good
8,990 reviews

Crew

8.1

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

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. 1 airline has 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 12h 50m. Your travel time can differ by up to 30m. 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 is the cheapest airline to fly from Rapid City to San Juan round-trip?

    Flying on United Airlines is currently your cheapest option to San Juan, with prices starting at $464. This flight 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.

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 airline flying from Rapid City to San Juan

Discover the top airline 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 Oktober 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$464Average$719FlexibilityNo cancel feeOn-time69%

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