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Cheap flights from Denver to San Juan from $120

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 7/4. 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

Enter your travel dates to find the best prices.
Frontier Logo
6:00 am - 12:41 am
DEN
-
SJU
16h 41m
1 stop
Frontier Logo
9:00 am - 11:58 pm
SJU
-
DEN
16h 58m
1 stop
$242Frontier
Mon, Aug 10 - Sat, Aug 15
Frontier Logo
11:49 pm - 2:11 am
DEN
-
SJU
24h 22m
1 stop
Frontier Logo
9:00 am - 11:58 pm
SJU
-
DEN
16h 58m
1 stop
$245Frontier
Wed, Aug 12 - Sat, Aug 15
Frontier Logo
11:59 pm - 12:37 am
DEN
-
SJU
22h 38m
1 stop
Frontier Logo
8:50 am - 12:16 am
SJU
-
DEN
17h 26m
1 stop
$247Frontier
Sat, Jun 27 - Sat, Jul 4
Frontier Logo
6:05 am - 3:58 am
DEN
-
SJU
19h 53m
1 stop
Frontier Logo
6:31 pm - 11:00 pm
SJU
-
DEN
30h 29m
1 stop
$250Frontier
Thu, Jul 30 - Mon, Aug 3
Frontier Logo
12:59 pm - 5:34 pm
DEN
-
SJU
26h 35m
1 stop
Frontier Logo
7:30 am - 8:23 am
SJU
-
DEN
26h 53m
1 stop
$251Frontier
Tue, Aug 4 - Mon, Aug 10
Frontier Logo
3:10 pm - 2:11 am
DEN
-
SJU
9h 01m
1 stop
Frontier Logo
9:00 am - 11:58 pm
SJU
-
DEN
16h 58m
1 stop
$253Frontier
Tue, Jul 7 - Wed, Jul 15
Frontier Logo
3:10 pm - 2:11 am
DEN
-
SJU
9h 01m
1 stop
Frontier Logo
9:00 am - 11:58 pm
SJU
-
DEN
16h 58m
1 stop
$255Frontier
Tue, Jul 7 - Sat, Jul 25
Frontier Logo
6:00 am - 5:36 pm
DEN
-
SJU
9h 36m
1 stop
Frontier Logo
8:32 am - 12:16 am
SJU
-
DEN
17h 44m
1 stop
$256Frontier
Wed, Aug 12 - Wed, Aug 19
Frontier Logo
6:00 am - 5:36 pm
DEN
-
SJU
9h 36m
1 stop
Frontier Logo
2:36 pm - 11:04 pm
SJU
-
DEN
10h 28m
1 stop
$258Frontier
Thu, Aug 13 - Mon, Aug 17
Frontier Logo
6:00 am - 5:36 pm
DEN
-
SJU
9h 36m
1 stop
Frontier Logo
6:44 am - 2:58 pm
SJU
-
DEN
10h 14m
1 stop
$260Frontier
Thu, Aug 13 - Sun, Aug 16

Frontier flights from Denver to San Juan

Our best Frontier deals on Denver to San Juan flight tickets
Frontier
Aug 10
DEN6:00 amDenver Intl
16h 41m
1 stop
SJU12:41 amSan Juan Luis Munoz Marin Intl
Aug 15
SJU9:00 amSan Juan Luis Munoz Marin Intl
16h 58m
1 stop
DEN11:58 pmDenver Intl
$242
Frontier
Aug 12
DEN11:49 pmDenver Intl
24h 22m
1 stop
SJU2:11 amSan Juan Luis Munoz Marin Intl
Aug 15
SJU9:00 amSan Juan Luis Munoz Marin Intl
16h 58m
1 stop
DEN11:58 pmDenver Intl
$245
Frontier
Jun 27
DEN11:59 pmDenver Intl
22h 38m
1 stop
SJU12:37 amSan Juan Luis Munoz Marin Intl
Jul 4
SJU8:50 amSan Juan Luis Munoz Marin Intl
17h 26m
1 stop
DEN12:16 amDenver Intl
$247

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 May 14, 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

Cheapest round-trip

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Mon 8/10

6:00 am-12:41 am

1 stop16h 41m

San Juan Luis Munoz Marin Intl

Sat 8/15

9:00 am-11:58 pm

1 stop16h 58m

$242

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Wed 8/12

11:49 pm-2:11 am

1 stop24h 22m

San Juan Luis Munoz Marin Intl

Sat 8/15

9:00 am-11:58 pm

1 stop16h 58m

$245

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Sat 6/27

11:59 pm-12:37 am

1 stop22h 38m

San Juan Luis Munoz Marin Intl

Sat 7/4

8:50 am-12:16 am

1 stop17h 26m

$247

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 7/30

6:05 am-3:58 am

1 stop19h 53m

San Juan Luis Munoz Marin Intl

Mon 8/3

6:31 pm-11:00 pm

1 stop30h 29m

$250

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Tue 8/4

12:59 pm-5:34 pm

1 stop26h 35m

San Juan Luis Munoz Marin Intl

Mon 8/10

7:30 am-8:23 am

1 stop26h 53m

$251

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Tue 7/7

3:10 pm-2:11 am

1 stop9h 01m

San Juan Luis Munoz Marin Intl

Wed 7/15

9:00 am-11:58 pm

1 stop16h 58m

$253

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Tue 7/7

3:10 pm-2:11 am

1 stop9h 01m

San Juan Luis Munoz Marin Intl

Sat 7/25

9:00 am-11:58 pm

1 stop16h 58m

$255

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Wed 8/12

6:00 am-5:36 pm

1 stop9h 36m

San Juan Luis Munoz Marin Intl

Wed 8/19

8:32 am-12:16 am

1 stop17h 44m

$256

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 8/13

6:00 am-5:36 pm

1 stop9h 36m

San Juan Luis Munoz Marin Intl

Mon 8/17

2:36 pm-11:04 pm

1 stop10h 28m

$258
Quickest round-trip

DenverSan Juan

DEN - SJU

DENSJU

Denver Intl

Thu 8/13

6:00 am-5:36 pm

1 stop9h 36m

San Juan Luis Munoz Marin Intl

Sun 8/16

6:44 am-2:58 pm

1 stop10h 14m

$260

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 December, then July is your next best option. Flight prices from Denver to San Juan during July average around $145.

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 $620. The most expensive day to fly to San Juan is Saturday, with ticket prices averaging around $775.

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 from Denver 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 $496 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 $334 on momondo.

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

Frequently asked questions about flying from Denver to San Juan

  • 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 $187Free CancellationRating
5.6
2,953 reviews
Search Frontier flights
JetBluePriceFrom $272Free CancellationRating
7.1
2,975 reviews
Search JetBlue flights
DeltaPriceFrom $353Free CancellationRating
7.9
8,452 reviews
Search Delta flights
SouthwestPriceFrom $388Free CancellationRating
8.0
4,299 reviews
Search Southwest flights
American AirlinesPriceFrom $485Free CancellationRating
7.1
11,663 reviews
Search American Airlines flights
United AirlinesPriceFrom $487Free CancellationRating
7.4
9,712 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