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San Juan

$95+ 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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SJU
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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

Cheap 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 December 4, 2025.

This Frontier deal was found by Cheapflights users on 12/2. 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 12/512:59 amDEN - SJU
1 stop10h 59mFrontier
Sun 12/1412:00 pmSJU - DEN
1 stop11h 40mFrontier
Deal found 12/2$280
This Kiwi.com deal was found by Cheapflights users on 12/1. 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.
Sun 12/711:25 pmDEN - SJU
1 stop7h 12mFrontier
Sat 12/1311:05 amSJU - DEN
1 stop14h 59mFrontier
Deal found 12/1$282
This Kiwi.com deal was found by Cheapflights users on 12/3. 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.
Mon 12/87:00 amDEN - SJU
1 stop13h 56mMultiple Airlines
Fri 1/166:48 pmSJU - DEN
2 stops40h 23mMultiple Airlines
Deal found 12/3$284
This Kiwi.com deal was found by Cheapflights users on 12/2. 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.
Mon 12/157:00 amDEN - SJU
1 stop13h 56mFrontier
Mon 12/227:25 amSJU - DEN
2 stops23h 33mFrontier
Deal found 12/2$285
This Frontier deal was found by Cheapflights users on 12/2. 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 12/76:31 pmDEN - SJU
1 stop12h 24mFrontier
Mon 12/1511:05 amSJU - DEN
1 stop14h 59mFrontier
Deal found 12/2$286
This Super.com deal was found by Cheapflights users on 12/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:06 pmDEN - SJU
1 stop12h 10mFrontier
Wed 1/77:05 pmSJU - DEN
1 stop15h 55mFrontier
Deal found 12/3$287
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 12/1212:11 pmDEN - SJU
1 stop8h 03mMultiple Airlines
Mon 12/156:14 pmSJU - DEN
2 stops17h 13mMultiple Airlines
Deal found 12/3$289
This Kiwi.com deal was found by Cheapflights users on 12/4. 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.
Thu 12/117:00 amDEN - SJU
2 stops24h 33mMultiple Airlines
Sun 12/1412:00 pmSJU - DEN
1 stop11h 40mMultiple Airlines
Deal found 12/4$292
This Kiwi.com deal was found by Cheapflights users on 12/3. 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.
Wed 12/1011:25 pmDEN - SJU
1 stop7h 12mFrontier
Thu 12/257:00 amSJU - DEN
2 stops17h 49mFrontier
Deal found 12/3$294
This Kiwi.com deal was found by Cheapflights users on 12/2. 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 12/1911:59 pmDEN - SJU
1 stop21h 55mMultiple Airlines
Wed 12/247:30 amSJU - DEN
2 stops28h 08mMultiple Airlines
Deal found 12/2$295
This Kiwi.com deal was found by Cheapflights users on 12/3. 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.
Wed 12/318:45 pmDEN - SJU
2 stops22h 20mMultiple Airlines
Wed 1/77:05 pmSJU - DEN
1 stop15h 55mMultiple Airlines
Deal found 12/3$296

Find 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 December 4, 2025.

Round-trip from

$279
(Kiwi.com)

One-way from

$95
(Super.com)

Popular in

December

Cheapest in

August

Average price

$685
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. 15% potential increase in price ($93 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 4, 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

Thu 3/19

2:50 pm-2:27 am

1 stop9h 37m

San Juan Luis Munoz Marin Intl

Tue 3/24

3:26 am-1:44 pm

1 stop12h 18m

$348

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Tue 3/17

2:50 pm-2:27 am

1 stop9h 37m

San Juan Luis Munoz Marin Intl

Sat 3/21

3:26 am-1:44 pm

1 stop12h 18m

$444

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Tue 2/3

6:00 am-12:36 am

2 stops15h 36m

San Juan Luis Munoz Marin Intl

Fri 2/6

2:05 am-4:12 pm

2 stops17h 07m

$452

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 5/14

11:50 pm-1:10 pm

1 stop11h 20m

San Juan Luis Munoz Marin Intl

Mon 5/18

5:05 am-1:15 pm

2 stops10h 10m

$459

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Mon 2/2

6:00 am-9:00 pm

1 stop12h 00m

San Juan Luis Munoz Marin Intl

Fri 2/6

2:05 am-4:12 pm

2 stops17h 07m

$463

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Wed 2/11

12:55 pm-12:35 am

2 stops8h 40m

San Juan Luis Munoz Marin Intl

Wed 2/18

5:40 am-2:10 pm

2 stops11h 30m

$475

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 3/5

12:55 pm-12:35 am

2 stops8h 40m

San Juan Luis Munoz Marin Intl

Tue 3/10

5:15 am-3:20 pm

2 stops12h 05m

$477

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Fri 5/15

11:35 am-11:40 pm

2 stops10h 05m

San Juan Luis Munoz Marin Intl

Mon 5/18

5:35 am-2:05 pm

2 stops10h 30m

$477

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Mon 4/6

10:50 am-10:50 pm

1 stop10h 00m

San Juan Luis Munoz Marin Intl

Wed 4/15

8:20 am-4:20 pm

2 stops10h 00m

$477

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 3/5

7:45 am-9:00 pm

1 stop10h 15m

San Juan Luis Munoz Marin Intl

Tue 3/10

1:25 pm-6:12 pm

Nonstop6h 47m

$491

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 22 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 November 28, 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 December 4, 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 December 4, 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
4,250 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,250 reviews
Southwest
8.0
Very good
4,250 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,011 reviews
Southwest
8.0
Very good
4,250 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,066 reviews
Southwest
8.0
Very good
4,250 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,047 reviews
Southwest
8.0
Very good
4,250 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,091 reviews
Southwest
8.0
Very good
4,250 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 9h 37m. Fly via JetBlue, United Airlines, or Southwest 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 $149, was found to be the cheapest airline from Denver to San Juan.Alternate airlines to your destination round-trip include JetBlue and Delta. Users have found that Frontier is 69% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Denver to San Juan one-way?

    $81 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Delta and JetBlue, with prices starting from $174 and $179, respectively.

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

    The cheapest flight price from Denver to San Juan is $323. On average you can expect to pay $596. The most popular route, (Denver Intl - San Juan Luis Munoz Marin Intl), can usually be booked for $202.

  • 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.

  • 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 $27.

  • 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 Bayside Marketplace. Kaseya Center, Bayfront Park, and Bayside Marketplace are located about 6.2 mi, 6.4 mi, and 6.4 mi, respectively from Miami. Travelers can book a car rental at Miami for about $26 per day to make their sightseeing more efficient.

  • 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 Tampa. Charlotte 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$149Average$303FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$299Average$429FlexibilityNo cancel feeOn-time62%
DeltaCheapest$381Average$653FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$447Average$579FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$487Average$682FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$488Average$592FlexibilityNo cancel feeOn-time71%

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