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Cheap flights from Denver to San Juan from $90

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 1/21. 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
9:41 am - 11:59 pm
DEN
-
SJU
11h 18m1 stop
Frontier Logo
7:54 pm - 7:55 am
SJU
-
DEN
15h 01m1 stop
$205Frontier
Fri, Feb 6 - Sat, Feb 14
Frontier Logo
11:59 pm - 10:09 am
DEN
-
SJU
7h 10m1 stop
Frontier Logo
3:22 pm - 11:04 pm
SJU
-
DEN
9h 42m1 stop
$206Frontier
Sun, Mar 1 - Wed, Mar 11
Multiple Airlines Logo
12:59 am - 6:58 pm
DEN
-
SJU
14h 59m2 stops
Multiple Airlines Logo
9:41 pm - 8:20 am
SJU
-
DEN
12h 39m1 stop
$207Multiple Airlines
Sun, Mar 1 - Sat, Mar 14
Frontier Logo
1:33 pm - 1:57 am
DEN
-
SJU
9h 24m1 stop
Frontier Logo
6:00 am - 9:48 pm
SJU
-
DEN
18h 48m1 stop
$209Frontier
Sat, Feb 14 - Sun, Feb 22
Frontier Logo
6:32 pm - 10:24 am
DEN
-
SJU
12h 52m1 stop
Frontier Logo
10:59 am - 8:30 am
SJU
-
DEN
24h 31m1 stop
$210Frontier
Thu, Jan 22 - Sun, Jan 25
Frontier Logo
1:36 pm - 12:48 am
DEN
-
SJU
9h 12m1 stop
Frontier Logo
3:22 pm - 11:04 pm
SJU
-
DEN
9h 42m1 stop
$211Frontier
Thu, Mar 12 - Tue, Mar 17
Multiple Airlines Logo
9:05 pm - 6:58 pm
DEN
-
SJU
18h 53m2 stops
Multiple Airlines Logo
4:36 pm - 10:00 am
SJU
-
DEN
20h 24m1 stop
$212Multiple Airlines
Thu, Jan 22 - Tue, Jan 27
Frontier Logo
3:41 pm - 1:58 am
DEN
-
SJU
8h 17m1 stop
Frontier Logo
10:00 pm - 1:28 pm
SJU
-
DEN
17h 28m1 stop
$213Frontier
Thu, Mar 26 - Wed, Apr 1
Frontier Logo
11:59 pm - 12:43 am
DEN
-
SJU
21h 44m1 stop
Frontier Logo
7:03 pm - 8:00 pm
SJU
-
DEN
27h 57m1 stop
$214Frontier
Tue, Feb 24 - Sun, Mar 1
Multiple Airlines Logo
11:25 pm - 12:39 pm
DEN
-
SJU
10h 14m1 stop
Multiple Airlines Logo
11:52 am - 7:02 am
SJU
-
DEN
22h 10m2 stops
$215Multiple Airlines
Thu, Feb 19 - Tue, Feb 24

Frontier flights from Denver to San Juan

Our best Frontier deals on Denver to San Juan flight tickets
Frontier
Feb 6
DEN9:41 amDenver Intl
11h 18m
1 stop
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Feb 14
SJU7:54 pmSan Juan Luis Munoz Marin Intl
15h 01m
1 stop
DEN7:55 amDenver Intl
$205
Frontier
Mar 1
DEN11:59 pmDenver Intl
7h 10m
1 stop
SJU10:09 amSan Juan Luis Munoz Marin Intl
Mar 11
SJU3:22 pmSan Juan Luis Munoz Marin Intl
9h 42m
1 stop
DEN11:04 pmDenver Intl
$206
Frontier
Mar 10
DEN9:25 amDenver Intl
11h 20m
1 stop
SJU10:45 pmSan Juan Luis Munoz Marin Intl
Mar 16
SJU9:58 pmSan Juan Luis Munoz Marin Intl
12h 28m
1 stop
DEN8:26 amDenver Intl
$208

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 8, 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

Fri 2/6

9:41 am-11:59 pm

1 stop11h 18m

San Juan Luis Munoz Marin Intl

Sat 2/14

7:54 pm-7:55 am

1 stop15h 01m

$205

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sun 3/1

11:59 pm-10:09 am

1 stop7h 10m

San Juan Luis Munoz Marin Intl

Wed 3/11

3:22 pm-11:04 pm

1 stop9h 42m

$206

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sun 3/1

12:59 am-6:58 pm

2 stops14h 59m

San Juan Luis Munoz Marin Intl

Sat 3/14

9:41 pm-8:20 am

1 stop12h 39m

$207

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sat 2/14

1:33 pm-1:57 am

1 stop9h 24m

San Juan Luis Munoz Marin Intl

Sun 2/22

6:00 am-9:48 pm

1 stop18h 48m

$209

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 1/22

6:32 pm-10:24 am

1 stop12h 52m

San Juan Luis Munoz Marin Intl

Sun 1/25

10:59 am-8:30 am

1 stop24h 31m

$210

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 3/12

1:36 pm-12:48 am

1 stop9h 12m

San Juan Luis Munoz Marin Intl

Tue 3/17

3:22 pm-11:04 pm

1 stop9h 42m

$211

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 1/22

9:05 pm-6:58 pm

2 stops18h 53m

San Juan Luis Munoz Marin Intl

Tue 1/27

4:36 pm-10:00 am

1 stop20h 24m

$212

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 3/26

3:41 pm-1:58 am

1 stop8h 17m

San Juan Luis Munoz Marin Intl

Wed 4/1

10:00 pm-1:28 pm

1 stop17h 28m

$213

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Tue 2/24

11:59 pm-12:43 am

1 stop21h 44m

San Juan Luis Munoz Marin Intl

Sun 3/1

7:03 pm-8:00 pm

1 stop27h 57m

$214

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 2/19

11:25 pm-12:39 pm

1 stop10h 14m

San Juan Luis Munoz Marin Intl

Tue 2/24

11:52 am-7:02 am

2 stops22h 10m

$215

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 $356.

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 $634. The most expensive day to fly to San Juan is Saturday, with ticket prices averaging around $772.

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 $475 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 $329 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 $150Free CancellationRating
5.7
3,061 reviews
Search Frontier flights
JetBluePriceFrom $299Free CancellationRating
7.2
2,892 reviews
Search JetBlue flights
DeltaPriceFrom $335Free CancellationRating
7.9
8,031 reviews
Search Delta flights
SouthwestPriceFrom $448Free CancellationRating
8.0
4,250 reviews
Search Southwest flights
American AirlinesPriceFrom $485Free CancellationRating
7.2
11,096 reviews
Search American Airlines flights
United AirlinesPriceFrom $486Free CancellationRating
7.4
9,142 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.

An easier way to manage your San Juan trip

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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