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Luis Munoz Marin Intl

$122+ Cheap flights from Denver (DEN) to Luis Munoz Marin Intl (SJU)

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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SJU
Aug 26 — Sep 21
Tue 8/26
Tue 9/2
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to San Juan Luis Munoz Marin Intl are usually found in October or September, booked 22 days in advance, depart on a Thursday or Tuesday and return on a Thursday

Cheap flight deals from Denver to Luis Munoz Marin Intl

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Luis Munoz Marin Intl (SJU). 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 21, 2025.

Round-trip from

$244
(Frontier)

One-way from

$122
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$338

Good round-trip deal

$576 or less
From Denver Intl to San Juan Luis Munoz Marin Intl
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One-way flight from Denver Intl to San Juan Luis Munoz Marin Intl
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Highest demand for flights based on searches. 18% potential increase in price ($105 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Denver Intl to San Juan Luis Munoz Marin Intl.
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Find flight deals from Denver to Luis Munoz Marin Intl

Cheapest flights from Denver to Luis Munoz Marin Intl
Explore the most affordable flight options available from Denver to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2025.

This Frontier deal was found by Cheapflights users on 8/21. 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 11/1411:59 pmDEN - SJU
1 stop11h 43mFrontier
Wed 11/199:00 amSJU - DEN
1 stop11h 56mFrontier
Deal found 8/21$244
This FlightHub deal was found by Cheapflights users on 8/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2212:34 amDEN - SJU
1 stop17h 22mFrontier
Sun 10/265:54 pmSJU - DEN
1 stop8h 57mFrontier
Deal found 8/21$253
This Frontier deal was found by Cheapflights users on 8/19. 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 9/2612:59 amDEN - SJU
1 stop11h 12mFrontier
Sat 10/44:42 pmSJU - DEN
1 stop8h 31mFrontier
Deal found 8/19$255
This Mytrip deal was found by Cheapflights users on 8/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2212:04 amDEN - SJU
1 stop24h 30mFrontier
Wed 9/2412:28 amSJU - DEN
1 stop10h 29mFrontier
Deal found 8/20$259
This FlightHub deal was found by Cheapflights users on 8/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/127:01 pmDEN - SJU
1 stop29h 33mFrontier
Fri 9/267:50 pmSJU - DEN
1 stop15h 25mFrontier
Deal found 8/21$262
This FlightHub deal was found by Cheapflights users on 8/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:55 pmDEN - SJU
1 stop21h 50mFrontier
Mon 9/298:00 amSJU - DEN
1 stop31h 02mFrontier
Deal found 8/21$263
This Frontier deal was found by Cheapflights users on 8/21. 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 10/1712:59 amDEN - SJU
1 stop11h 29mFrontier
Sun 10/269:06 pmSJU - DEN
1 stop13h 27mFrontier
Deal found 8/21$264
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 9/206:59 pmDEN - SJU
1 stop16h 44mMultiple Airlines
Fri 10/37:50 pmSJU - DEN
1 stop15h 25mMultiple Airlines
Deal found 8/21$266
This Mytrip deal was found by Cheapflights users on 8/21. 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.
Sat 10/412:59 amDEN - SJU
1 stop11h 12mFrontier
Sun 10/129:06 pmSJU - DEN
1 stop13h 27mFrontier
Deal found 8/21$267
This Priceline deal was found by Cheapflights users on 8/19. 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 9/2411:19 amDEN - SJU
1 stop13h 15mFrontier
Sat 9/273:39 amSJU - DEN
1 stop21h 34mFrontier
Deal found 8/19$268
This FlightHub deal was found by Cheapflights users on 8/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/612:34 amDEN - SJU
1 stop21h 58mFrontier
Sat 11/157:30 amSJU - DEN
1 stop28h 13mFrontier
Deal found 8/21$270

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Luis Munoz Marin Intl 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 21, 2025.
Use the filters below to find and compare flights from Denver to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Denver

Fly to

Luis Munoz Marin Intl

Route

Depart

Return

Price

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Wed 9/17

11:19 am-8:02 am

1 stop18h 43m

San Juan Luis Munoz Marin Intl

Wed 9/24

1:06 pm-8:57 am

1 stop21h 51m

$269

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Fri 9/12

7:01 pm-11:59 pm

1 stop26h 58m

San Juan Luis Munoz Marin Intl

Thu 9/18

3:39 am-5:55 pm

1 stop16h 16m

$278

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sat 10/25

10:20 am-12:01 pm

1 stop23h 41m

San Juan Luis Munoz Marin Intl

Tue 10/28

12:29 pm-11:16 pm

1 stop12h 47m

$278

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Fri 11/7

12:16 am-11:19 am

1 stop8h 03m

San Juan Luis Munoz Marin Intl

Sun 11/16

7:30 am-8:43 am

1 stop28h 13m

$295

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Tue 9/16

10:01 am-8:56 pm

2 stops32h 55m

San Juan Luis Munoz Marin Intl

Tue 9/23

3:39 am-10:14 am

1 stop8h 35m

$305

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Fri 9/12

11:59 pm-3:22 pm

1 stop13h 23m

San Juan Luis Munoz Marin Intl

Wed 9/17

12:28 am-8:57 am

1 stop10h 29m

$316

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Fri 11/7

11:15 pm-12:41 am

1 stop22h 26m

San Juan Luis Munoz Marin Intl

Sat 11/8

3:59 am-8:15 am

1 stop31h 16m

$335

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Fri 9/26

12:59 am-8:56 pm

2 stops17h 57m

San Juan Luis Munoz Marin Intl

Sat 10/4

4:42 pm-11:13 pm

1 stop8h 31m

$356

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sat 1/24

11:59 pm-12:33 pm

1 stop9h 34m

San Juan Luis Munoz Marin Intl

Fri 1/30

2:00 pm-11:04 pm

1 stop12h 04m

$358

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Mon 1/12

6:45 am-7:05 pm

2 stops9h 20m

San Juan Luis Munoz Marin Intl

Wed 1/21

9:05 am-5:15 pm

1 stop11h 10m

$397

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 20 results
1
2

The best insider tips for Denver to San Juan Luis Munoz Marin Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Denver to San Juan Luis Munoz Marin Intl Airport trip
Airports
DEN

Use the A Line train for a quick 37-minute ride from Denver Union Station to DEN, avoiding traffic and parking fees.

Read more about DENby Emily Zemler
SJU

Opt for rideshare services like Uber at SJU for convenience and cashless payments, especially if taxis claim broken card machines.

Read more about SJUby Brandon Schultz
Our travel experts
Emily Zemler

Emily Zemler

Expert on DEN

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more
Brandon Schultz

Brandon Schultz

Expert on SJU

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

Best time to book a flight from Denver to Luis Munoz Marin Intl

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport

How far ahead should I book a flight from Denver to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Denver to Luis Munoz Marin Intl. Price data was last updated on August 8, 2025.

To ensure you get the cheapest price possible for a flight from Denver to San Juan Luis Munoz Marin Intl Airport, you should look to book at least 22 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Denver to San Juan Luis Munoz Marin Intl Airport?

Currently, September is the cheapest month in which you can book a flight from Denver to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Denver to San Juan Luis Munoz Marin Intl Airport 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.

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

Find hourly flight availability from Denver to Luis Munoz Marin Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 21, 2025.

It’s optimal to fly from Denver to San Juan Luis Munoz Marin Intl Airport in the afternoon. By choosing this option you can save up to 59% 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 Luis Munoz Marin Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Denver to Luis Munoz Marin Intl. Price data was last updated on August 17, 2025.

Travelers seeking maximum savings on their Denver to San Juan Luis Munoz Marin Intl Airport flight should consider departing on Monday afternoons 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 Luis Munoz Marin Intl

Get insights into the airlines that provide service to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl. Reviews last updated August 21, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Denver to San Juan Luis Munoz Marin Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,245 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

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
4,245 reviews
Southwest
8.0
Very good
4,245 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

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
7,981 reviews
Southwest
8.0
Very good
4,245 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

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
8,930 reviews
Southwest
8.0
Very good
4,245 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

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
10,000 reviews
Southwest
8.0
Very good
4,245 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

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
3,207 reviews
Southwest
8.0
Very good
4,245 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

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 Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl?

    If you book a flight to San Juan Luis Munoz Marin Intl 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 Luis Munoz Marin Intl per day from 6 different airlines.

  • How long is the flight from Denver to San Juan Luis Munoz Marin Intl Airport?

    Frontier can get you from Denver to San Juan Luis Munoz Marin Intl Airport in just under 18h 43m. Your travel time can differ by up to . The distance from Denver to San Juan Luis Munoz Marin Intl Airport is about 2730 mi.

  • What are the cheapest airlines flying from Denver to San Juan Luis Munoz Marin Intl Airport round-trip?

    Cheapflights users have booked flights from Denver to San Juan Luis Munoz Marin Intl Airport round-trip from $134. Other airlines that can offer you cheap pricing are JetBlue, from $276, and Delta, from $381. Frontier is priced at 70% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest flights from Denver to San Juan Luis Munoz Marin Intl Airport?

    The cheapest flight price from Denver to San Juan Luis Munoz Marin Intl Airport is $526. On average you can expect to pay $656. The most popular route, (Denver Intl - San Juan Luis Munoz Marin Intl), can usually be booked for $260.

  • Where are the most common layover locations when flying from Denver to San Juan Luis Munoz Marin Intl Airport?

    Denver to San Juan Luis Munoz Marin Intl Airport flights have a layover in Orlando most often. Miami sees the second most layovers for non-direct flights flying from Denver to San Juan Luis Munoz Marin Intl Airport. Tampa follows Miami in terms of the most frequent layover location on Denver to San Juan Luis Munoz Marin Intl Airport flights.

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

    Most Orlando visitors opt to spend their time experiencing 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 landing in Orlando looking to spend some time exploring during their layover can rent a car for about $34 per day.

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

    The majority of Miami visitors spend their time at Wynwood Art District, Bayfront Park, and Kaseya Center. Wynwood Art District, Bayfront Park, and Kaseya Center are located about 5.5 mi, 6.4 mi, and 6.2 mi, respectively from Miami. Those landing in Miami looking to spend some time exploring during their layover can rent a car for about $29 per day.

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

    Busch Gardens, University of South Florida Botanical Gardens, and Florida Aquarium are currently the most popular points of interest in Tampa. Busch Gardens, University of South Florida Botanical Gardens and Florida Aquarium are located about 7.9 mi, 8.7 mi, and 5.8 mi, respectively from Tampa if you are interested in checking them out. Those landing in Tampa looking to spend some time exploring during their layover can rent a car for about $33 per day.

  • Where are the least popular layover locations for Denver to San Juan Luis Munoz Marin Intl Airport flights?

    Of the flights from Denver to San Juan Luis Munoz Marin Intl Airport that have layovers, the fewest flights stop in Atlanta. Denver to San Juan Luis Munoz Marin Intl Airport flights stopping in Charlotte are the next rarest.

  • Can I find deals for flights from Denver to Luis Munoz Marin Intl that include hotel bookings?

    Yes. In addition to deals on Denver to Luis Munoz Marin Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Luis Munoz Marin Intl?

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

  • Can I find deals for business class flights from Denver to Luis Munoz Marin Intl?

    Yes. Cheapflights offers flight deals from Denver to Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from Denver to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Denver to San Juan Luis Munoz Marin Intl Airport 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

Traveling to a place near San Juan Luis Munoz Marin Intl Airport?

Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locations
Dorado
Fajardo
Rio Grande
Luquillo
Humacao

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Top 6 airlines flying from Denver to Luis Munoz Marin Intl

Discover the top 6 airlines that operate flights from Denver to Luis Munoz Marin Intl. 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 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$134Average$289FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$276Average$427FlexibilityNo cancel feeOn-time62%
DeltaCheapest$381Average$664FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$448Average$586FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$486Average$680FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$494Average$584FlexibilityNo cancel feeOn-time71%

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