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Cheap flights from Denver to San Juan from $119

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to San Juan departing on 5/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Denver to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
11:59 pm - 2:08 pm
DEN
-
SJU
12h 09m
1 stop
Frontier Logo
3:21 am - 8:24 am
SJU
-
DEN
31h 03m
1 stop
$248Frontier
Sat, Apr 25 - Sun, May 3
Frontier Logo
11:59 pm - 12:29 am
DEN
-
SJU
22h 30m
1 stop
Frontier Logo
1:59 am - 11:09 pm
SJU
-
DEN
23h 10m
1 stop
$253Frontier
Sat, Apr 18 - Fri, Apr 24
Frontier Logo
6:00 am - 6:49 pm
DEN
-
SJU
10h 49m
1 stop
Frontier Logo
11:00 am - 9:40 am
SJU
-
DEN
24h 40m
1 stop
$259Frontier
Sat, Apr 11 - Tue, Apr 14
Frontier Logo
11:59 pm - 9:54 am
DEN
-
SJU
7h 55m
1 stop
Frontier Logo
6:00 am - 10:19 am
SJU
-
DEN
30h 19m
2 stops
$263Frontier
Mon, Apr 20 - Fri, Apr 24
Frontier Logo
11:59 pm - 11:29 pm
DEN
-
SJU
21h 30m
1 stop
Frontier Logo
3:08 am - 8:21 am
SJU
-
DEN
31h 13m
1 stop
$269Frontier
Wed, Apr 15 - Tue, Apr 21
Frontier Logo
11:49 pm - 1:17 am
DEN
-
SJU
23h 28m
1 stop
Frontier Logo
11:00 am - 9:40 am
SJU
-
DEN
24h 40m
1 stop
$270Frontier
Wed, Apr 8 - Tue, Apr 14
Multiple Airlines Logo
11:59 pm - 9:54 am
DEN
-
SJU
7h 55m
1 stop
Multiple Airlines Logo
7:00 am - 9:40 am
SJU
-
DEN
28h 40m
1 stop
$273Multiple Airlines
Tue, Apr 14 - Tue, Apr 21
Frontier Logo
3:32 pm - 2:01 am
DEN
-
SJU
8h 29m
1 stop
Frontier Logo
6:00 am - 1:40 pm
SJU
-
DEN
33h 40m
2 stops
$274Frontier
Mon, Apr 20 - Fri, Apr 24
Multiple Airlines Logo
10:30 am - 11:58 pm
DEN
-
SJU
35h 28m
2 stops
Multiple Airlines Logo
11:00 am - 9:40 am
SJU
-
DEN
24h 40m
1 stop
$276Multiple Airlines
Tue, Apr 7 - Tue, Apr 14
Frontier Logo
6:00 am - 8:49 pm
DEN
-
SJU
12h 49m
1 stop
Frontier Logo
6:00 am - 8:57 am
SJU
-
DEN
28h 57m
2 stops
$277Frontier
Sat, Apr 11 - Fri, Apr 17

Frontier flights from Denver to San Juan Luis Munoz Marin Intl Airport

Our best Frontier deals on Denver to San Juan Luis Munoz Marin Intl Airport flight tickets
Frontier
Apr 25
DEN11:59 pmDenver Intl
12h 09m
1 stop
SJU2:08 pmSan Juan Luis Munoz Marin Intl
May 3
SJU3:21 amSan Juan Luis Munoz Marin Intl
31h 03m
1 stop
DEN8:24 amDenver Intl
$248
Frontier
Apr 18
DEN11:59 pmDenver Intl
22h 30m
1 stop
SJU12:29 amSan Juan Luis Munoz Marin Intl
Apr 24
SJU1:59 amSan Juan Luis Munoz Marin Intl
23h 10m
1 stop
DEN11:09 pmDenver Intl
$253
Frontier
Apr 11
DEN6:00 amDenver Intl
10h 49m
1 stop
SJU6:49 pmSan Juan Luis Munoz Marin Intl
Apr 14
SJU11:00 amSan Juan Luis Munoz Marin Intl
24h 40m
1 stop
DEN9:40 amDenver Intl
$259

momondo Fare Finder

 
Customize your flight search to find flights from Denver to San Juan Luis Munoz Marin Intl Airport 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, momondo users made 832,500 searches. Data last updated March 18, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sat 4/25

11:59 pm-2:08 pm

1 stop12h 09m

San Juan Luis Munoz Marin Intl

Sun 5/3

3:21 am-8:24 am

1 stop31h 03m

$248

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sat 4/18

11:59 pm-12:29 am

1 stop22h 30m

San Juan Luis Munoz Marin Intl

Fri 4/24

1:59 am-11:09 pm

1 stop23h 10m

$253
Quickest round-trip

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sat 4/11

6:00 am-6:49 pm

1 stop10h 49m

San Juan Luis Munoz Marin Intl

Tue 4/14

11:00 am-9:40 am

1 stop24h 40m

$259

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Mon 4/20

11:59 pm-9:54 am

1 stop7h 55m

San Juan Luis Munoz Marin Intl

Fri 4/24

6:00 am-10:19 am

2 stops30h 19m

$263

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Wed 4/15

11:59 pm-11:29 pm

1 stop21h 30m

San Juan Luis Munoz Marin Intl

Tue 4/21

3:08 am-8:21 am

1 stop31h 13m

$269

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Wed 4/8

11:49 pm-1:17 am

1 stop23h 28m

San Juan Luis Munoz Marin Intl

Tue 4/14

11:00 am-9:40 am

1 stop24h 40m

$270

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Tue 4/14

11:59 pm-9:54 am

1 stop7h 55m

San Juan Luis Munoz Marin Intl

Tue 4/21

7:00 am-9:40 am

1 stop28h 40m

$273

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Mon 4/20

3:32 pm-2:01 am

1 stop8h 29m

San Juan Luis Munoz Marin Intl

Fri 4/24

6:00 am-1:40 pm

2 stops33h 40m

$274

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Tue 4/7

10:30 am-11:58 pm

2 stops35h 28m

San Juan Luis Munoz Marin Intl

Tue 4/14

11:00 am-9:40 am

1 stop24h 40m

$276

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sat 4/11

6:00 am-8:49 pm

1 stop12h 49m

San Juan Luis Munoz Marin Intl

Fri 4/17

6:00 am-8:57 am

2 stops28h 57m

$277

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Juan from

How to get the cheapest flight ticket from Denver to San Juan Luis Munoz Marin Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Denver and San Juan Luis Munoz Marin Intl Airport?

What is the cheapest month to fly to San Juan Luis Munoz Marin Intl Airport?

If you aren’t able to travel to San Juan Luis Munoz Marin Intl Airport during the month of August, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $377.

What is the cheapest day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

On average, the least expensive day to fly to San Juan Luis Munoz Marin Intl Airport from Denver is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $606. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from Denver because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $764.

What is the cheapest Denver Intl to San Juan Luis Munoz Marin Intl flight route?

Fly from Denver Intl to San Juan Luis Munoz Marin Intl for the best Denver Intl - San Juan Luis Munoz Marin Intl flight prices

How far in advance should I book a flight to San Juan Luis Munoz Marin Intl Airport?

You are more likely to see cheaper flights to San Juan Luis Munoz Marin Intl Airport from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan Luis Munoz Marin Intl Airport for around $487 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan Luis Munoz Marin Intl Airport from Denver for as low as $354 on momondo.

What cabin class options are available on Denver Intl to San Juan Luis Munoz Marin Intl flights?

There are 4 cabin classes available to choose from on Denver Intl to San Juan Luis Munoz Marin Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Denver to San Juan Luis Munoz Marin Intl Airport flight prices changed over time?

As of March 2026, prices for Denver to San Juan Luis Munoz Marin Intl Airport flights are approximately 1% more expensive when compared to flights at the same time last year.

When to book flights from Denver to San Juan Luis Munoz Marin Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to San Juan Luis Munoz Marin Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Denver to San Juan Luis Munoz Marin Intl Airport (DEN to SJU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to San Juan Luis Munoz Marin Intl Airport

Best Price Found

$378

Fastest flight time

5h 40m

Direct flights

Every day
The best one-way flight to San Juan Luis Munoz Marin Intl Airport from Denver in the past 72 hours is $378. The best round-trip flight deal from Denver to San Juan Luis Munoz Marin Intl Airport found on momondo in the last 72 hours is $614.
The fastest flight from Denver to San Juan Luis Munoz Marin Intl Airport takes 5h 40m
Direct flights go from Denver to San Juan Luis Munoz Marin Intl Airport every day.
Search flight deals

  • How far is Denver Intl to San Juan Luis Munoz Marin Intl by plane?

    Denver Intl and San Juan Luis Munoz Marin Intl are 2741.9 mi apart from one another. Flights usually cover this in 5h 40m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Denver Intl Airport to San Juan Luis Munoz Marin Intl Airport?

    Prices for flights from Denver Intl Airport to San Juan Luis Munoz Marin Intl Airport were last updated today.

  • How many operators does momondo search for flights from Denver Intl Airport to San Juan Luis Munoz Marin Intl Airport?

  • How old do you have to be to fly from Denver Intl Airport to San Juan Luis Munoz Marin Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport to San Juan Luis Munoz Marin Intl Airport.

  • What documentation or ID do you need to fly to San Juan Luis Munoz Marin Intl Airport?

    The required travel and health documents for your San Juan Luis Munoz Marin Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Juan Luis Munoz Marin Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Denver to San Juan Luis Munoz Marin Intl Airport?

  • What is the most popular airline from Denver to San Juan Luis Munoz Marin Intl Airport?

Best airlines flying from Denver to San Juan Luis Munoz Marin Intl Airport

Compare and see reviews for airlines that fly from Denver to San Juan Luis Munoz Marin Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $181Free CancellationRating
5.7
3,024 reviews
Search Frontier flights
JetBluePriceFrom $272Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
DeltaPriceFrom $328Free CancellationRating
7.9
8,288 reviews
Search Delta flights
SouthwestPriceFrom $376Free CancellationRating
8.0
4,320 reviews
Search Southwest flights
American AirlinesPriceFrom $485Free CancellationRating
7.1
11,470 reviews
Search American Airlines flights
United AirlinesPriceFrom $486Free CancellationRating
7.4
9,434 reviews
Search United Airlines flights

  • United Airlines Flights From Denver to San Juan Luis Munoz Marin Intl Airport

    United Airlines operates around 7 flights from Denver to San Juan Luis Munoz Marin Intl Airport every week. The average price of these flights found in the last 72 hours has been $665, but momondo users have found United Airlines deals from Denver to San Juan Luis Munoz Marin Intl Airport from as low as $486 round-trip. United Airlines has been scored 7.4/10 in 9,434 reviews.

Traveling to a place near San Juan?

Book flights to San Juan if you plan to visit one of these locations
Carolina
Fajardo
Dorado
Luquillo
Caguas
Rio Grande
Humacao
Bayamón

Why use momondo?

Why should I use momondo to find a flight deal from Denver to San Juan?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Juan from Denver.

Can I find flights from Denver to San Juan with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San Juan from Denver with this policy.

How can momondo help me find flights from Denver to San Juan?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Denver to San Juan.

I’m not ready to book a flight from Denver to San Juan right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Denver to San Juan flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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