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Cheap flights from Denver to San Juan from $104

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 11/14. 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
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
6:38 pm - 6:34 amDEN-SJU
8h 56m1 stop
Frontier Logo
9:37 pm - 7:55 amSJU-DEN
13h 18m1 stop
$280Frontier
Find Deal
Tue, Jan 6 - Wed, Jan 14
Multiple Airlines Logo
9:00 pm - 3:55 pmDEN-SJU
15h 55m2 stops
Multiple Airlines Logo
9:58 pm - 8:24 amSJU-DEN
13h 26m1 stop
$281Multiple Airlines
Find Deal
Thu, Dec 4 - Sat, Dec 20
Frontier Logo
12:59 am - 3:19 pmDEN-SJU
11h 20m1 stop
Frontier Logo
9:54 pm - 8:25 amSJU-DEN
13h 31m1 stop
$282Frontier
Find Deal
Fri, Nov 14 - Sat, Nov 22
Frontier Logo
12:59 am - 3:01 pmDEN-SJU
11h 02m1 stop
Frontier Logo
10:42 am - 8:56 amSJU-DEN
25h 14m2 stops
$283Frontier
Find Deal
Mon, Dec 1 - Thu, Dec 11
Frontier Logo
12:59 am - 3:01 pmDEN-SJU
11h 02m1 stop
Frontier Logo
9:58 pm - 8:24 amSJU-DEN
13h 26m1 stop
$284Frontier
Find Deal
Tue, Dec 2 - Sat, Dec 20
Frontier Logo
8:37 am - 1:32 amDEN-SJU
13h 55m2 stops
Frontier Logo
9:00 am - 6:26 pmSJU-DEN
12h 26m1 stop
$285Frontier
Find Deal
Sun, Nov 9 - Wed, Nov 19
Multiple Airlines Logo
8:00 am - 12:16 amDEN-SJU
13h 16m2 stops
Multiple Airlines Logo
7:15 am - 4:15 pmSJU-DEN
12h 00m1 stop
$286Multiple Airlines
Find Deal
Tue, Dec 9 - Thu, Dec 25
Frontier Logo
11:25 pm - 1:42 amDEN-SJU
23h 17m1 stop
Frontier Logo
7:00 am - 11:59 pmSJU-DEN
19h 59m2 stops
$287Frontier
Find Deal
Sun, Jan 11 - Sun, Jan 18
Frontier Logo
6:50 pm - 3:55 pmDEN-SJU
18h 05m2 stops
Frontier Logo
9:30 pm - 9:03 amSJU-DEN
14h 33m1 stop
$288Frontier
Find Deal
Wed, Nov 19 - Tue, Nov 25
Multiple Airlines Logo
9:00 pm - 5:33 pmDEN-SJU
17h 33m1 stop
Multiple Airlines Logo
11:38 am - 11:13 pmSJU-DEN
14h 35m2 stops
$289Multiple Airlines
Find Deal
Fri, Dec 5 - Tue, Dec 23

Frontier flights from Denver to San Juan

Our best Frontier deals on Denver to San Juan flight tickets
Frontier
Jan 6
DEN6:38 pmDenver Intl
8h 56m
1 stop
SJU6:34 amSan Juan Luis Munoz Marin Intl
Jan 14
SJU9:37 pmSan Juan Luis Munoz Marin Intl
13h 18m
1 stop
DEN7:55 amDenver Intl
$280
Find similar
Frontier
Nov 14
DEN12:59 amDenver Intl
11h 20m
1 stop
SJU3:19 pmSan Juan Luis Munoz Marin Intl
Nov 22
SJU9:54 pmSan Juan Luis Munoz Marin Intl
13h 31m
1 stop
DEN8:25 amDenver Intl
$282
Find similar
Frontier
Dec 1
DEN12:59 amDenver Intl
11h 02m
1 stop
SJU3:01 pmSan Juan Luis Munoz Marin Intl
Dec 11
SJU10:42 amSan Juan Luis Munoz Marin Intl
25h 14m
2 stops
DEN8:56 amDenver Intl
$283
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated October 23, 2025.
Use the filters below to find and compare flights from Denver to San Juan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Tue 1/6

6:38 pm-6:34 am

1 stop8h 56m

San Juan Luis Munoz Marin Intl

Wed 1/14

9:37 pm-7:55 am

1 stop13h 18m

$280

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 12/4

9:00 pm-3:55 pm

2 stops15h 55m

San Juan Luis Munoz Marin Intl

Sat 12/20

9:58 pm-8:24 am

1 stop13h 26m

$281

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Fri 11/14

12:59 am-3:19 pm

1 stop11h 20m

San Juan Luis Munoz Marin Intl

Sat 11/22

9:54 pm-8:25 am

1 stop13h 31m

$282

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Mon 12/1

12:59 am-3:01 pm

1 stop11h 02m

San Juan Luis Munoz Marin Intl

Thu 12/11

10:42 am-8:56 am

2 stops25h 14m

$283

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Tue 12/2

12:59 am-3:01 pm

1 stop11h 02m

San Juan Luis Munoz Marin Intl

Sat 12/20

9:58 pm-8:24 am

1 stop13h 26m

$284

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sun 11/9

8:37 am-1:32 am

2 stops13h 55m

San Juan Luis Munoz Marin Intl

Wed 11/19

9:00 am-6:26 pm

1 stop12h 26m

$285

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Tue 12/9

8:00 am-12:16 am

2 stops13h 16m

San Juan Luis Munoz Marin Intl

Thu 12/25

7:15 am-4:15 pm

1 stop12h 00m

$286

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sun 1/11

11:25 pm-1:42 am

1 stop23h 17m

San Juan Luis Munoz Marin Intl

Sun 1/18

7:00 am-11:59 pm

2 stops19h 59m

$287

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Wed 11/19

6:50 pm-3:55 pm

2 stops18h 05m

San Juan Luis Munoz Marin Intl

Tue 11/25

9:30 pm-9:03 am

1 stop14h 33m

$288

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Fri 12/5

9:00 pm-5:33 pm

1 stop17h 33m

San Juan Luis Munoz Marin Intl

Tue 12/23

11:38 am-11:13 pm

2 stops14h 35m

$289

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

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 cheapest month to fly to San Juan?

If you’re not able to fly to San Juan in August, then May is your next best option. Flight prices from Denver to San Juan during May average around $366.

What is the cheapest day to depart on your flight to San Juan?

The cheapest day to depart from Denver to San Juan is on a Tuesday when prices can be found for as low as $642. The most expensive day to fly to San Juan is Saturday, with ticket prices averaging around $805.

What is the cheapest time of day to depart on your flight to San Juan?

The cheapest time of day to fly to San Juan is in the afternoon when flights can be purchased for as low as $288. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $690 on average. Flights to San Juan from Denver in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

How far in advance should I book a flight to San Juan?

You are more likely to see cheaper flights to San Juan from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around $477 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from Denver for as low as $356 on momondo.

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

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

Cheap Denver to San Juan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to San Juan

Fastest flight time

5h 40m

Direct flights

Every day

Airports in San Juan

1 airport
The fastest flight from Denver to San Juan takes 5h 40m
Direct flights go from Denver to San Juan every day.
There is 1 airport near San Juan: San Juan Luis Munoz Marin Intl (SJU)
Search flight deals

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

    A flight from Denver Intl to San Juan will travel around 2735.5 mi. By plane, this route typically takes 7h 12m.

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

    Prices for flights from Denver Intl Airport to San Juan are refreshed on a daily basis.

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

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

    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.

  • What documentation or ID do you need to fly to San Juan?

    The required travel and health documents for your San Juan 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. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Denver to San Juan

Compare and see reviews for airlines that fly from Denver to San Juan with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $146Free CancellationRating
5.8
3,128 reviews
Search Frontier flights
JetBluePriceFrom $337Free CancellationRating
7.2
2,908 reviews
Search JetBlue flights
DeltaPriceFrom $381Free CancellationRating
7.9
7,981 reviews
Search Delta flights
SouthwestPriceFrom $448Free CancellationRating
8.0
4,237 reviews
Search Southwest flights
United AirlinesPriceFrom $486Free CancellationRating
7.4
8,991 reviews
Search United Airlines flights
American AirlinesPriceFrom $494Free CancellationRating
7.2
11,028 reviews
Search American Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Denver to San Juan. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to San Juan from Denver which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Juan from Denver.

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

Yes momondo offers price alerts on flights to San Juan from Denver. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your San Juan trip

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Sat 11/22
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Find better results for your trip to Puerto Rico

Fly into one of these airports located in San Juan

Airports listed have a maximum distance of 7.1 mi from San Juan
San Juan Isla Grande Airport
San Juan Luis Munoz Marin Intl Airport