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Cheap flights from Denver to San Juan from $145

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 12/1. 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.
Multiple Airlines Logo
12:59 am - 3:21 pmDEN-SJU
11h 22m1 stop
Multiple Airlines Logo
10:42 am - 8:27 amSJU-DEN
24h 45m2 stops
$285Multiple Airlines
Find Deal
Sat, Dec 6 - Mon, Dec 15
Multiple Airlines Logo
12:59 am - 12:32 pmDEN-SJU
32h 33m2 stops
Multiple Airlines Logo
3:55 am - 5:34 pmSJU-DEN
16h 39m1 stop
$286Multiple Airlines
Find Deal
Fri, Dec 12 - Fri, Dec 19
Frontier Logo
11:59 pm - 12:42 pmDEN-SJU
9h 43m1 stop
Frontier Logo
3:58 am - 11:07 pmSJU-DEN
22h 09m1 stop
$287Frontier
Find Deal
Thu, Jan 15 - Sun, Jan 18
Frontier Logo
6:00 am - 5:00 pmDEN-SJU
8h 00m1 stop
Frontier Logo
2:29 am - 9:03 amSJU-DEN
9h 34m1 stop
$288Frontier
Find Deal
Sat, Feb 7 - Sun, Feb 15
Multiple Airlines Logo
9:34 am - 2:50 amDEN-SJU
14h 16m1 stop
Multiple Airlines Logo
3:54 am - 9:12 pmSJU-DEN
20h 18m2 stops
$289Multiple Airlines
Find Deal
Thu, Dec 11 - Sun, Dec 21
Multiple Airlines Logo
12:59 am - 8:39 pmDEN-SJU
16h 40m2 stops
Multiple Airlines Logo
3:55 am - 11:04 pmSJU-DEN
22h 09m1 stop
$290Multiple Airlines
Find Deal
Fri, Dec 12 - Tue, Dec 16
Frontier Logo
6:00 am - 1:24 amDEN-SJU
16h 24m1 stop
Frontier Logo
6:00 am - 9:11 pmSJU-DEN
18h 11m2 stops
$291Frontier
Find Deal
Sun, Jan 4 - Mon, Jan 19
Frontier Logo
11:25 pm - 11:50 pmDEN-SJU
21h 25m1 stop
Frontier Logo
3:55 am - 11:04 pmSJU-DEN
22h 09m1 stop
$292Frontier
Find Deal
Sat, Dec 13 - Tue, Dec 16
Multiple Airlines Logo
12:14 am - 7:13 pmDEN-SJU
15h 59m2 stops
Multiple Airlines Logo
7:01 pm - 7:15 amSJU-DEN
15h 14m1 stop
$293Multiple Airlines
Find Deal
Tue, Dec 30 - Sun, Jan 11
Multiple Airlines Logo
6:40 am - 11:35 pmDEN-SJU
13h 55m1 stop
Multiple Airlines Logo
6:00 am - 3:02 pmSJU-DEN
12h 02m2 stops
$294Multiple Airlines
Find Deal
Mon, Jan 19 - Fri, Jan 23

Frontier flights from Denver to San Juan

Our best Frontier deals on Denver to San Juan flight tickets
Frontier
Nov 18
DEN12:16 amDenver Intl
14h 38m
2 stops
SJU5:54 pmSan Juan Luis Munoz Marin Intl
Nov 23
SJU6:05 amSan Juan Luis Munoz Marin Intl
16h 26m
1 stop
DEN7:31 pmDenver Intl
$285
Find similar
Frontier
Nov 18
DEN12:16 amDenver Intl
14h 38m
2 stops
SJU5:54 pmSan Juan Luis Munoz Marin Intl
Nov 23
SJU6:05 amSan Juan Luis Munoz Marin Intl
16h 26m
1 stop
DEN7:31 pmDenver Intl
$286
Find similar
Frontier
Jan 15
DEN11:59 pmDenver Intl
9h 43m
1 stop
SJU12:42 pmSan Juan Luis Munoz Marin Intl
Jan 18
SJU3:58 amSan Juan Luis Munoz Marin Intl
22h 09m
1 stop
DEN11:07 pmDenver Intl
$287
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 November 14, 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

Sat 12/6

12:59 am-3:21 pm

1 stop11h 22m

San Juan Luis Munoz Marin Intl

Mon 12/15

10:42 am-8:27 am

2 stops24h 45m

$285

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Fri 12/12

12:59 am-12:32 pm

2 stops32h 33m

San Juan Luis Munoz Marin Intl

Fri 12/19

3:55 am-5:34 pm

1 stop16h 39m

$286

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 1/15

11:59 pm-12:42 pm

1 stop9h 43m

San Juan Luis Munoz Marin Intl

Sun 1/18

3:58 am-11:07 pm

1 stop22h 09m

$287

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sat 2/7

6:00 am-5:00 pm

1 stop8h 00m

San Juan Luis Munoz Marin Intl

Sun 2/15

2:29 am-9:03 am

1 stop9h 34m

$288

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 12/11

9:34 am-2:50 am

1 stop14h 16m

San Juan Luis Munoz Marin Intl

Sun 12/21

3:54 am-9:12 pm

2 stops20h 18m

$289

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Fri 12/12

12:59 am-8:39 pm

2 stops16h 40m

San Juan Luis Munoz Marin Intl

Tue 12/16

3:55 am-11:04 pm

1 stop22h 09m

$290

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sun 1/4

6:00 am-1:24 am

1 stop16h 24m

San Juan Luis Munoz Marin Intl

Mon 1/19

6:00 am-9:11 pm

2 stops18h 11m

$291

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sat 12/13

11:25 pm-11:50 pm

1 stop21h 25m

San Juan Luis Munoz Marin Intl

Tue 12/16

3:55 am-11:04 pm

1 stop22h 09m

$292

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Tue 12/30

12:14 am-7:13 pm

2 stops15h 59m

San Juan Luis Munoz Marin Intl

Sun 1/11

7:01 pm-7:15 am

1 stop15h 14m

$293

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Mon 1/19

6:40 am-11:35 pm

1 stop13h 55m

San Juan Luis Munoz Marin Intl

Fri 1/23

6:00 am-3:02 pm

2 stops12h 02m

$294

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 $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 $785.

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 $693 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 week ahead of your departure date. In general, you can expect to find flights to San Juan for around $492 when searching week 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 $378 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 47m.

  • 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 $148Free CancellationRating
5.8
3,112 reviews
Search Frontier flights
JetBluePriceFrom $337Free CancellationRating
7.2
2,906 reviews
Search JetBlue flights
DeltaPriceFrom $381Free CancellationRating
7.9
8,008 reviews
Search Delta flights
SouthwestPriceFrom $443Free CancellationRating
8.0
4,236 reviews
Search Southwest flights
United AirlinesPriceFrom $486Free CancellationRating
7.4
9,016 reviews
Search United Airlines flights
American AirlinesPriceFrom $494Free CancellationRating
7.2
11,050 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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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