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Cheap flights from Denver to San Juan from $134

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 10/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Denver to San Juan

Cheap round-trip flights

Frontier Logo
6:00 am - 3:37 pmDEN-SJU
7h 37m1 stop
Frontier Logo
5:41 pm - 12:07 amSJU-DEN
8h 26m1 stop
$265Frontier
Find Deal
Fri, Oct 17 - Fri, Oct 24
Frontier Logo
11:59 pm - 3:22 pmDEN-SJU
13h 23m1 stop
Frontier Logo
12:28 am - 8:57 amSJU-DEN
10h 29m1 stop
$268Frontier
Find Deal
Fri, Sep 12 - Thu, Sep 18
Frontier Logo
12:04 am - 2:34 amDEN-SJU
24h 30m1 stop
Frontier Logo
1:06 pm - 8:57 amSJU-DEN
21h 51m1 stop
$269Frontier
Find Deal
Sun, Sep 14 - Wed, Sep 24
Frontier Logo
12:04 am - 8:31 pmDEN-SJU
18h 27m1 stop
Frontier Logo
3:39 am - 10:14 amSJU-DEN
8h 35m1 stop
$274Frontier
Find Deal
Mon, Sep 8 - Tue, Sep 16
Frontier Logo
12:59 am - 3:15 pmDEN-SJU
11h 16m1 stop
Frontier Logo
4:42 pm - 8:15 amSJU-DEN
18h 33m1 stop
$275Frontier
Find Deal
Thu, Nov 6 - Tue, Nov 11
Frontier Logo
6:55 pm - 9:52 amDEN-SJU
12h 57m1 stop
Frontier Logo
3:39 am - 10:14 amSJU-DEN
8h 35m1 stop
$276Frontier
Find Deal
Sat, Sep 13 - Tue, Sep 16
Frontier Logo
12:04 am - 2:34 amDEN-SJU
24h 30m1 stop
Frontier Logo
12:28 am - 8:57 amSJU-DEN
10h 29m1 stop
$277Frontier
Find Deal
Thu, Sep 11 - Thu, Sep 18
Frontier Logo
11:15 pm - 12:06 amDEN-SJU
21h 51m1 stop
Frontier Logo
10:09 pm - 8:33 amSJU-DEN
13h 24m1 stop
$278Frontier
Find Deal
Fri, Nov 7 - Sun, Nov 9
Logo
12:34 am - 7:56 pmDEN-SJU
17h 22m1 stop
Logo
9:06 pm - 9:07 amSJU-DEN
38h 01m2 stops
$302
Find Deal
Wed, Oct 22 - Mon, Oct 27
Logo
6:15 am - 4:23 pmDEN-SJU
8h 08m1 stop
Logo
9:06 pm - 8:33 amSJU-DEN
13h 27m1 stop
$332
Find Deal
Thu, Oct 23 - Sun, Oct 26

Frontier flights from Denver to San Juan

Our best Frontier deals on Denver to San Juan flight tickets
Frontier
Oct 17
DEN6:00 amDenver Intl
7h 37m
1 stop
SJU3:37 pmSan Juan Luis Munoz Marin Intl
Oct 24
SJU5:41 pmSan Juan Luis Munoz Marin Intl
8h 26m
1 stop
DEN12:07 amDenver Intl
$265
Find similar
Frontier
Sep 12
DEN11:59 pmDenver Intl
13h 23m
1 stop
SJU3:22 pmSan Juan Luis Munoz Marin Intl
Sep 18
SJU12:28 amSan Juan Luis Munoz Marin Intl
10h 29m
1 stop
DEN8:57 amDenver Intl
$268
Find similar
Frontier
Aug 8
DEN11:30 pmDenver Intl
22h 29m
1 stop
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Aug 12
SJU3:40 amSan Juan Luis Munoz Marin Intl
21h 31m
1 stop
DEN11:11 pmDenver Intl
$269
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 August 7, 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

Fri 10/17

6:00 am-3:37 pm

1 stop7h 37m

San Juan Luis Munoz Marin Intl

Fri 10/24

5:41 pm-12:07 am

1 stop8h 26m

$265

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

Thu 9/18

12:28 am-8:57 am

1 stop10h 29m

$268

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sun 9/14

12:04 am-2:34 am

1 stop24h 30m

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

Mon 9/8

12:04 am-8:31 pm

1 stop18h 27m

San Juan Luis Munoz Marin Intl

Tue 9/16

3:39 am-10:14 am

1 stop8h 35m

$274

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 11/6

12:59 am-3:15 pm

1 stop11h 16m

San Juan Luis Munoz Marin Intl

Tue 11/11

4:42 pm-8:15 am

1 stop18h 33m

$275

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sat 9/13

6:55 pm-9:52 am

1 stop12h 57m

San Juan Luis Munoz Marin Intl

Tue 9/16

3:39 am-10:14 am

1 stop8h 35m

$276

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 9/11

12:04 am-2:34 am

1 stop24h 30m

San Juan Luis Munoz Marin Intl

Thu 9/18

12:28 am-8:57 am

1 stop10h 29m

$277

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Fri 11/7

11:15 pm-12:06 am

1 stop21h 51m

San Juan Luis Munoz Marin Intl

Sun 11/9

10:09 pm-8:33 am

1 stop13h 24m

$278

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Wed 10/22

12:34 am-7:56 pm

1 stop17h 22m

San Juan Luis Munoz Marin Intl

Mon 10/27

9:06 pm-9:07 am

2 stops38h 01m

$302

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 10/23

6:15 am-4:23 pm

1 stop8h 08m

San Juan Luis Munoz Marin Intl

Sun 10/26

9:06 pm-8:33 am

1 stop13h 27m

$332

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 October, then September is your next best option. Flight prices from Denver to San Juan during September average around $324.

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 Thursday when prices can be found for as low as $653. The most expensive day to fly to San Juan is Saturday, with ticket prices averaging around $760.

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 $694 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 $454 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 $335 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

Best Price Found

$134

Fastest flight time

7h 30m

Direct flights

Every day

Airports in San Juan

1 airport
The best one-way flight to San Juan from Denver in the past 72 hours is $134. The best round-trip flight deal from Denver to San Juan found on momondo in the last 72 hours is $265.
The fastest flight from Denver to San Juan takes 7h 30m
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 37m.

  • 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 $133Free CancellationRating
5.8
3,231 reviews
Search Frontier flights
JetBluePriceFrom $276Free CancellationRating
7.2
2,915 reviews
Search JetBlue flights
SouthwestPriceFrom $446Free CancellationRating
8.0
4,244 reviews
Search Southwest flights
DeltaPriceFrom $475Free CancellationRating
8.0
7,985 reviews
Search Delta flights
United AirlinesPriceFrom $485Free CancellationRating
7.4
8,917 reviews
Search United Airlines flights
American AirlinesPriceFrom $491Free CancellationRating
7.2
10,000 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.

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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