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Cheap flights from Denver to San Juan from $111

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 1/31. 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

Enter your travel dates to find the best prices.
Frontier Logo
11:25 pm - 2:35 am
DEN
-
SJU
24h 10m
1 stop
Frontier Logo
6:00 am - 9:11 am
SJU
-
DEN
30h 11m
1 stop
$203Frontier
Wed, Feb 18 - Mon, Mar 2
Frontier Logo
6:20 pm - 2:53 am
DEN
-
SJU
29h 33m
1 stop
Frontier Logo
6:00 am - 8:21 am
SJU
-
DEN
29h 21m
1 stop
$204Frontier
Wed, Feb 18 - Mon, Feb 23
Frontier Logo
9:20 am - 1:29 pm
DEN
-
SJU
26h 09m
1 stop
Frontier Logo
3:09 pm - 11:08 pm
SJU
-
DEN
9h 59m
1 stop
$211Frontier
Tue, Mar 31 - Tue, Apr 7
Frontier Logo
10:44 am - 12:41 am
DEN
-
SJU
10h 57m
1 stop
Frontier Logo
11:55 am - 9:42 pm
SJU
-
DEN
12h 47m
1 stop
$212Frontier
Thu, Feb 26 - Fri, Feb 27
Frontier Logo
11:59 pm - 10:19 am
DEN
-
SJU
8h 20m
1 stop
Frontier Logo
6:07 pm - 10:30 am
SJU
-
DEN
18h 23m
1 stop
$214Frontier
Fri, Apr 10 - Mon, Apr 13
Frontier Logo
11:25 pm - 2:29 am
DEN
-
SJU
24h 04m
1 stop
Frontier Logo
11:55 am - 9:42 pm
SJU
-
DEN
12h 47m
1 stop
$217Frontier
Sat, Feb 14 - Fri, Feb 20
Frontier Logo
11:25 pm - 2:29 am
DEN
-
SJU
24h 04m
1 stop
Frontier Logo
2:54 am - 9:42 pm
SJU
-
DEN
21h 48m
1 stop
$218Frontier
Sat, Feb 14 - Thu, Feb 19
Frontier Logo
11:59 pm - 2:58 am
DEN
-
SJU
23h 59m
1 stop
Frontier Logo
6:39 pm - 8:26 am
SJU
-
DEN
15h 47m
1 stop
$220Frontier
Thu, Mar 5 - Tue, Mar 10
Frontier Logo
7:24 pm - 2:58 am
DEN
-
SJU
28h 34m
1 stop
Frontier Logo
3:08 am - 11:09 pm
SJU
-
DEN
22h 01m
1 stop
$221Frontier
Thu, Mar 5 - Sun, Mar 8
Frontier Logo
12:59 am - 3:06 pm
DEN
-
SJU
11h 07m
1 stop
Frontier Logo
10:04 am - 11:09 pm
SJU
-
DEN
15h 05m
1 stop
$223Frontier
Tue, Feb 24 - Wed, Mar 11

Frontier flights from Denver to San Juan

Our best Frontier deals on Denver to San Juan flight tickets
Frontier
Feb 18
DEN11:25 pmDenver Intl
24h 10m
1 stop
SJU2:35 amSan Juan Luis Munoz Marin Intl
Feb 23
SJU6:00 amSan Juan Luis Munoz Marin Intl
29h 21m
1 stop
DEN8:21 amDenver Intl
$203
Frontier
Feb 7
DEN11:20 amDenver Intl
9h 39m
1 stop
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Feb 20
SJU3:53 amSan Juan Luis Munoz Marin Intl
22h 06m
1 stop
DEN10:59 pmDenver Intl
$204
Frontier
Feb 21
DEN11:59 pmDenver Intl
10h 28m
1 stop
SJU1:27 pmSan Juan Luis Munoz Marin Intl
Feb 25
SJU5:25 pmSan Juan Luis Munoz Marin Intl
17h 30m
1 stop
DEN7:55 amDenver Intl
$205

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 January 21, 2026.
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

Wed 2/18

11:25 pm-2:35 am

1 stop24h 10m

San Juan Luis Munoz Marin Intl

Mon 3/2

6:00 am-9:11 am

1 stop30h 11m

$203

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Wed 2/18

6:20 pm-2:53 am

1 stop29h 33m

San Juan Luis Munoz Marin Intl

Mon 2/23

6:00 am-8:21 am

1 stop29h 21m

$204

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Tue 3/31

9:20 am-1:29 pm

1 stop26h 09m

San Juan Luis Munoz Marin Intl

Tue 4/7

3:09 pm-11:08 pm

1 stop9h 59m

$211

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 2/26

10:44 am-12:41 am

1 stop10h 57m

San Juan Luis Munoz Marin Intl

Fri 2/27

11:55 am-9:42 pm

1 stop12h 47m

$212

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Fri 4/10

11:59 pm-10:19 am

1 stop8h 20m

San Juan Luis Munoz Marin Intl

Mon 4/13

6:07 pm-10:30 am

1 stop18h 23m

$214

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sat 2/14

11:25 pm-2:29 am

1 stop24h 04m

San Juan Luis Munoz Marin Intl

Fri 2/20

11:55 am-9:42 pm

1 stop12h 47m

$217

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sat 2/14

11:25 pm-2:29 am

1 stop24h 04m

San Juan Luis Munoz Marin Intl

Thu 2/19

2:54 am-9:42 pm

1 stop21h 48m

$218

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 3/5

11:59 pm-2:58 am

1 stop23h 59m

San Juan Luis Munoz Marin Intl

Tue 3/10

6:39 pm-8:26 am

1 stop15h 47m

$220

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 3/5

7:24 pm-2:58 am

1 stop28h 34m

San Juan Luis Munoz Marin Intl

Sun 3/8

3:08 am-11:09 pm

1 stop22h 01m

$221

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Tue 2/24

12:59 am-3:06 pm

1 stop11h 07m

San Juan Luis Munoz Marin Intl

Wed 3/11

10:04 am-11:09 pm

1 stop15h 05m

$223

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 typical price of a round-trip flight between Denver and San Juan?

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 $358.

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 $623. The most expensive day to fly to San Juan is Saturday, with ticket prices averaging around $770.

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 $323 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

2 airports
The fastest flight from Denver to San Juan takes 5h 40m
Direct flights go from Denver to San Juan every day.
There are 2 airports in San Juan. From Denver there are direct flights to 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 5h 40m.

  • 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 $154Free CancellationRating
5.7
3,057 reviews
Search Frontier flights
JetBluePriceFrom $299Free CancellationRating
7.2
2,890 reviews
Search JetBlue flights
DeltaPriceFrom $328Free CancellationRating
7.9
8,088 reviews
Search Delta flights
SouthwestPriceFrom $439Free CancellationRating
8.0
4,266 reviews
Search Southwest flights
American AirlinesPriceFrom $485Free CancellationRating
7.2
11,173 reviews
Search American Airlines flights
United AirlinesPriceFrom $486Free CancellationRating
7.4
9,191 reviews
Search United 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