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San Juan

$77+ Cheap flights from Denver (DEN) to San Juan

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SJU
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to San Juan are usually found in August or May, booked 15 days in advance, depart on a Thursday or Tuesday and return on a Thursday

Find flight deals from Denver to San Juan

Cheapest flights from Denver to San Juan
Explore the most affordable flight options available from Denver to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.

This Frontier deal was found by Cheapflights users on 10/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/71:42 pmDEN - SJU
2 stops18h 37mFrontier
Thu 11/139:00 amSJU - DEN
2 stops15h 09mFrontier
Deal found 10/13$275
This Kiwi.com deal was found by Cheapflights users on 10/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/111:04 amDEN - SJU
2 stops13h 59mMultiple Airlines
Fri 11/144:08 pmSJU - DEN
1 stop27h 30mMultiple Airlines
Deal found 10/13$276
This Frontier deal was found by Cheapflights users on 10/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1011:14 pmDEN - SJU
1 stop11h 58mFrontier
Wed 12/1711:05 amSJU - DEN
1 stop9h 02mFrontier
Deal found 10/13$277
This Frontier deal was found by Cheapflights users on 10/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:02 pmDEN - SJU
1 stop12h 53mFrontier
Wed 12/1711:05 amSJU - DEN
1 stop9h 02mFrontier
Deal found 10/14$278
This Frontier deal was found by Cheapflights users on 10/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/249:19 pmDEN - SJU
2 stops15h 09mFrontier
Wed 10/299:00 amSJU - DEN
1 stop11h 26mFrontier
Deal found 10/13$279
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:31 pmDEN - SJU
1 stop12h 24mFrontier
Sun 12/141:59 amSJU - DEN
1 stop9h 24mFrontier
Deal found 10/14$280
This Frontier deal was found by Cheapflights users on 10/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2412:59 amDEN - SJU
1 stop11h 29mFrontier
Sat 11/13:04 amSJU - DEN
1 stop15h 01mFrontier
Deal found 10/15$281
This Frontier deal was found by Cheapflights users on 10/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/89:05 pmDEN - SJU
2 stops15h 09mFrontier
Thu 11/139:00 amSJU - DEN
2 stops15h 09mFrontier
Deal found 10/13$283
This Frontier deal was found by Cheapflights users on 10/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2510:00 amDEN - SJU
1 stop14h 30mFrontier
Tue 10/2812:29 pmSJU - DEN
1 stop12h 47mFrontier
Deal found 10/14$284
This Frontier deal was found by Cheapflights users on 10/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/212:34 amDEN - SJU
1 stop12h 36mFrontier
Fri 11/1412:29 pmSJU - DEN
2 stops23h 34mFrontier
Deal found 10/13$285
This Priceline deal was found by Cheapflights users on 10/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:59 pmDEN - SJU
1 stop13h 00mFrontier
Mon 12/810:42 amSJU - DEN
1 stop25h 01mFrontier
Deal found 10/15$286

Cheap flight deals from Denver to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) 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 October 16, 2025.

Round-trip from

$275
(Frontier)

One-way from

$77
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$486
From Denver Intl to San Juan
Search Deals
One-way flight from Denver Intl to San Juan
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($83 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver 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 October 16, 2025.
Use the filters below to find and compare flights from Denver to San Juan that are best for you.

Fly from

Denver

Fly to

San Juan

Route

Depart

Return

Price

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Tue 12/30

10:40 pm-2:17 pm

1 stop12h 37m

San Juan Luis Munoz Marin Intl

Wed 1/7

2:45 pm-10:25 pm

1 stop10h 40m

$333

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Mon 12/8

12:40 pm-12:35 am

2 stops8h 55m

San Juan Luis Munoz Marin Intl

Sun 12/14

6:10 am-4:05 pm

2 stops12h 55m

$477

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Wed 11/12

7:46 am-9:00 pm

1 stop10h 14m

San Juan Luis Munoz Marin Intl

Tue 11/18

2:05 am-8:34 am

1 stop9h 29m

$495

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Mon 12/15

8:40 pm-10:25 am

2 stops10h 45m

San Juan Luis Munoz Marin Intl

Wed 12/24

8:55 am-3:55 pm

2 stops10h 00m

$497

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Wed 12/3

12:04 pm-11:59 pm

1 stop8h 55m

San Juan Luis Munoz Marin Intl

Sun 12/21

3:44 pm-10:33 pm

1 stop9h 49m

$515

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Fri 12/12

12:05 pm-1:25 am

2 stops10h 20m

San Juan Luis Munoz Marin Intl

Mon 12/22

7:30 am-3:00 pm

2 stops10h 30m

$525

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sun 12/14

12:05 pm-1:25 am

2 stops10h 20m

San Juan Luis Munoz Marin Intl

Thu 12/25

8:55 am-4:55 pm

2 stops11h 00m

$525

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 11/27

6:00 am-7:35 pm

2 stops10h 35m

San Juan Luis Munoz Marin Intl

Tue 12/2

8:55 am-4:55 pm

2 stops11h 00m

$545

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 11/20

12:20 pm-11:56 pm

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Wed 11/26

3:25 pm-9:44 pm

1 stop9h 19m

$575

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Tue 1/6

11:59 pm-1:17 pm

1 stop10h 18m

San Juan Luis Munoz Marin Intl

Wed 1/14

2:25 pm-6:12 pm

Nonstop6h 47m

$581

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Showing 1-10 of 21 results
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Best time to book a flight from Denver to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Denver 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 Denver to San Juan

How far ahead should I book a flight from Denver to San Juan?

Use this chart to determine the optimal time to book a round-trip flight from Denver to San Juan. Price data was last updated on October 10, 2025.

The best time to book flights from Denver to San Juan is 15 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Denver to San Juan?

Currently, April is the cheapest month in which you can book a flight from Denver to San Juan (average of $130). Flying from Denver to San Juan in June is currently the most expensive (average of $273). 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.

What is the cheapest time of day to fly from DEN to SJU?

Find hourly flight availability from Denver to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 16, 2025.

It’s optimal to fly from Denver to San Juan in the evening. By choosing this option you can save up to 56% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Denver to San Juan?

Use this chart to determine the cheapest time to fly round-trip from Denver to San Juan. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Denver to San Juan flight should consider departing on Wednesday evenings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 October 16, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Denver 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.
Southwest
8.0
Very good
4,241 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,984 reviews
Southwest
8.0
Very good
4,241 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,982 reviews
Southwest
8.0
Very good
4,241 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,043 reviews
Southwest
8.0
Very good
4,241 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,137 reviews
Southwest
8.0
Very good
4,241 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Denver 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 Denver to San Juan?

    If you book a flight to San Juan from Denver, you will be flying from Denver Intl, which is the city’s only airport. Denver Intl (DEN) is located 18.5 mi from the center of Denver. There are 0 flights from Denver Intl to San Juan per day from 6 different airlines.

  • How long is the flight from Denver to San Juan?

    There are many flights that can get you from Denver to San Juan in 8h 55m. Fly via JetBlue, Southwest, or United Airlines to get the fastest option. The distance from Denver to San Juan is about 2730 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Denver to San Juan round-trip?

    Frontier, at $146, was found to be the cheapest airline from Denver to San Juan.Alternate airlines to your destination round-trip include Delta and JetBlue. Users have found that Frontier is 69% cheaper than the other options available to this destination.

  • What are the cheapest flights from Denver to San Juan?

    The cheapest flight price from Denver to San Juan is $303. On average you can expect to pay $540. The most popular route, (Denver Intl - San Juan Luis Munoz Marin Intl), can usually be booked for $199.

  • Where are the most common layover locations when flying from Denver to San Juan?

    Of the flights from Denver to San Juan that have layovers, most of them stop in Orlando. Miami sees the next most layovers on Denver to San Juan flights. Charlotte comes in third as the most popular layover location on Denver to San Juan flights.

  • What are some popular things to do or see while on a layover in Orlando?

    The majority of Orlando visitors spend their time at Walt Disney World Resort, Universal Orlando Resort, and International Drive. Travelers on a layover in Orlando can visit Walt Disney World Resort, Universal Orlando Resort, and International Drive, by traveling 16.2 mi, 10.2 mi, and 9.9 mi, respectively after landing at Orlando. Those on a layover in Orlando in need of a rental car can book one at Orlando for about $24.

  • What are some popular points of interest to see during a layover in Miami?

    Most Miami visitors opt to spend their time at Kaseya Center, Bayfront Park, and Wynwood Art District. Kaseya Center, Bayfront Park, and Wynwood Art District are located about 6.2 mi, 6.4 mi, and 5.5 mi, respectively from Miami. Travelers can book a car rental at Miami for about $21 per day to make their sightseeing more efficient.

  • What are points of interest worth seeing during a layover in Charlotte?

    Carowind, NASCAR Hall of Fame, and Mint Museum Uptown are currently the most popular points of interest in Charlotte. Carowind, NASCAR Hall of Fame and Mint Museum Uptown are located about 8.2 mi, 5.7 mi, and 5.4 mi, respectively from Charlotte Douglas if you are interested in checking them out. Travelers in need of a car in Charlotte can rent one for about $45 per day.

  • Where are the least popular layover locations for Denver to San Juan flights?

    Of the flights from Denver to San Juan that have layovers, the fewest flights stop in Atlanta. Tampa sees the next fewest layovers on Denver to San Juan flights.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Denver 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 Denver to San Juan?

    Currently, April is the cheapest month in which you can book a flight from Denver to San Juan (average of $130). Flying from Denver to San Juan in June is currently the most expensive (average of $273). 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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Top 6 airlines flying from Denver to San Juan

Discover the top 6 airlines that operate flights from Denver 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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$146Average$299FlexibilityNo cancel feeOn-time62%
DeltaCheapest$335Average$654FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$337Average$433FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$449Average$591FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$487Average$684FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$494Average$585FlexibilityNo cancel feeOn-time71%

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