What airlines fly to Denver?

Frontier, United Airlines and American Airlines are the top three most popular airlines that fly to Denver from San Juan according to our data. Frontier is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 6 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from San Juan to Denver Intl?

Frontier is the most popular carrier operating from San Juan to Denver Intl

When did momondo last update prices for flights from San Juan to Denver Intl Airport?

Prices for flights from San Juan to Denver Intl Airport were last updated today.

How many operators does momondo search for flights from San Juan to Denver Intl Airport?

The number of operators available for flights from San Juan to Denver Intl Airport is 6 as of September 2025.

How old do you have to be to fly from San Juan to Denver Intl Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Juan to Denver Intl Airport.

What documentation or ID do you need to fly to Denver Intl Airport?

The required travel and health documents for your Denver Intl Airport 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 Denver Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$133 Cheap Flights from San Juan to Denver in 2025

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Find the cheapest flights from San Juan to Denver

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

6:22 am - 3:24 pmSJU-DEN

11h 02m1 stop

12:34 am - 7:56 pmDEN-SJU

17h 22m1 stop

$248Frontier

Find Deal

Wed, Oct 15 - Thu, Oct 23

6:22 am - 3:24 pmSJU-DEN

11h 02m1 stop

6:23 am - 12:29 amDEN-SJU

16h 06m2 stops

$252Frontier

Find Deal

Wed, Oct 15 - Fri, Oct 24

6:22 am - 1:08 amSJU-DEN

20h 46m1 stop

12:59 am - 3:03 amDEN-SJU

24h 04m2 stops

$263Frontier

Find Deal

Thu, Oct 23 - Tue, Oct 28

11:02 am - 4:48 pmSJU-DEN

8h 46m1 stop

12:51 am - 2:54 pmDEN-SJU

11h 03m1 stop

$264Frontier

Find Deal

Fri, Dec 5 - Sun, Dec 7

6:22 am - 3:24 pmSJU-DEN

11h 02m1 stop

10:29 pm - 2:30 amDEN-SJU

50h 01m2 stops

$266Frontier

Find Deal

Wed, Oct 8 - Mon, Oct 13

9:06 pm - 8:33 amSJU-DEN

13h 27m1 stop

12:59 am - 5:54 pmDEN-SJU

14h 55m2 stops

$267Frontier

Find Deal

Thu, Oct 23 - Wed, Oct 29

1:59 am - 8:58 amSJU-DEN

8h 59m1 stop

11:59 pm - 6:58 pmDEN-SJU

16h 59m1 stop

$268Frontier

Find Deal

Thu, Oct 9 - Fri, Oct 17

1:59 am - 8:58 amSJU-DEN

8h 59m1 stop

11:45 pm - 11:01 amDEN-SJU

9h 16m1 stop

$269Frontier

Find Deal

Wed, Oct 15 - Wed, Oct 22

1:59 am - 8:58 amSJU-DEN

8h 59m1 stop

7:38 pm - 2:59 pmDEN-SJU

17h 21m1 stop

$280

Find Deal

Fri, Oct 17 - Sat, Oct 25

1:59 am - 8:58 amSJU-DEN

8h 59m1 stop

9:19 pm - 8:40 pmDEN-SJU

21h 21m1 stop

$283

Find Deal

Fri, Oct 17 - Fri, Oct 24

Frontier flights from San Juan to Denver

Our best Frontier deals on San Juan to Denver flight tickets

Frontier

Oct 15

SJU6:22 amSan Juan Luis Munoz Marin Intl

11h 02m

1 stop

DEN3:24 pmDenver Intl

Oct 23

DEN12:34 amDenver Intl

17h 22m

1 stop

SJU7:56 pmSan Juan Luis Munoz Marin Intl

$248

Find similar

Frontier

Oct 15

SJU6:22 amSan Juan Luis Munoz Marin Intl

11h 02m

1 stop

DEN3:24 pmDenver Intl

Oct 24

DEN6:23 amDenver Intl

16h 06m

2 stops

SJU12:29 amSan Juan Luis Munoz Marin Intl

$252

Find similar

Frontier

Oct 23

SJU6:22 amSan Juan Luis Munoz Marin Intl

20h 46m

1 stop

DEN1:08 amDenver Intl

Oct 28

DEN12:59 amDenver Intl

24h 04m

2 stops

SJU3:03 amSan Juan Luis Munoz Marin Intl

$263

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San JuanDenver

SJU - DEN

SJUDEN

San Juan Luis Munoz Marin Intl

Wed 10/15

6:22 am-3:24 pm

1 stop11h 02m

Denver Intl

Thu 10/23

12:34 am-7:56 pm

1 stop17h 22m

$248

San JuanDenver

SJU - DEN

SJUDEN

San Juan Luis Munoz Marin Intl

Wed 10/15

6:22 am-3:24 pm

1 stop11h 02m

Denver Intl

Fri 10/24

6:23 am-12:29 am

2 stops16h 06m

$252

San JuanDenver

SJU - DEN

SJUDEN

San Juan Luis Munoz Marin Intl

Thu 10/23

6:22 am-1:08 am

1 stop20h 46m

Denver Intl

Tue 10/28

12:59 am-3:03 am

2 stops24h 04m

$263

San JuanDenver

SJU - DEN

SJUDEN

San Juan Luis Munoz Marin Intl

Fri 12/5

11:02 am-4:48 pm

1 stop8h 46m

Denver Intl

Sun 12/7

12:51 am-2:54 pm

1 stop11h 03m

$264

San JuanDenver

SJU - DEN

SJUDEN

San Juan Luis Munoz Marin Intl

Wed 10/8

6:22 am-3:24 pm

1 stop11h 02m

Denver Intl

Mon 10/13

10:29 pm-2:30 am

2 stops50h 01m

$266

San JuanDenver

SJU - DEN

SJUDEN

San Juan Luis Munoz Marin Intl

Thu 10/23

9:06 pm-8:33 am

1 stop13h 27m

Denver Intl

Wed 10/29

12:59 am-5:54 pm

2 stops14h 55m

$267

San JuanDenver

SJU - DEN

SJUDEN

San Juan Luis Munoz Marin Intl

Thu 10/9

1:59 am-8:58 am

1 stop8h 59m

Denver Intl

Fri 10/17

11:59 pm-6:58 pm

1 stop16h 59m

$268

San JuanDenver

SJU - DEN

SJUDEN

San Juan Luis Munoz Marin Intl

Wed 10/15

1:59 am-8:58 am

1 stop8h 59m

Denver Intl

Wed 10/22

11:45 pm-11:01 am

1 stop9h 16m

$269

San JuanDenver

SJU - DEN

SJUDEN

San Juan Luis Munoz Marin Intl

Fri 10/17

1:59 am-8:58 am

1 stop8h 59m

Denver Intl

Sat 10/25

7:38 pm-2:59 pm

1 stop17h 21m

$280

San JuanDenver

SJU - DEN

SJUDEN

San Juan Luis Munoz Marin Intl

Fri 10/17

1:59 am-8:58 am

1 stop8h 59m

Denver Intl

Fri 10/24

9:19 pm-8:40 pm

1 stop21h 21m

$283

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from San Juan to Denver

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

Prices

Airlines

Other information

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from San Juan is in February. Flight prices, which tend to average around $295, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in February, then you should wait until October to fly from San Juan, when ticket prices are also cheap, with an average price of $363.

What is the cheapest day to depart on your flight to Denver?

The cheapest day to depart on your flight to Denver is on a Thursday when prices can be found for as low as $551. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $875.

What is the cheapest time of day to depart on your flight to Denver?

The cheapest time of day to fly to Denver is in the evening when flights can be purchased for as low as $324. Flights at noon are often more expensive with an average ticket price of $637.

What is the cheapest San Juan to Denver Intl flight route?

Fly from San Juan Luis Munoz Marin Intl to Denver Intl for the best San Juan - Denver Intl flight prices

How far in advance should I book a flight to Denver?

You are more likely to see cheaper flights to Denver from San Juan when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $447 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from San Juan for as low as $295 on momondo.

What cabin class options are available on San Juan to Denver Intl flights?

There are 4 cabin classes available to choose from on San Juan to Denver Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap San Juan to Denver flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Juan to Denver

Fastest flight time	6h 10m
Direct flights	Every day
Airports in Denver	1 airport

The fastest flight from San Juan to Denver takes 6h 10m

Direct flights go from San Juan to Denver every day.

There is 1 airport near Denver: Denver Intl (DEN)

Search flight deals

How far is San Juan to Denver Intl by plane?
The distance between San Juan and Denver Intl is about 2735.5 mi. 8h 46m is a normal flight duration for this route.
When did momondo last update prices for flights from San Juan to Denver Intl Airport?
Prices for flights from San Juan to Denver Intl Airport were last updated today.
How many operators does momondo search for flights from San Juan to Denver Intl Airport?
The number of operators available for flights from San Juan to Denver Intl Airport is 6 as of September 2025.
How old do you have to be to fly from San Juan to Denver Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Juan to Denver Intl Airport.
What documentation or ID do you need to fly to Denver Intl Airport?
The required travel and health documents for your Denver Intl Airport 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 Denver Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from San Juan to Denver

Compare and see reviews for airlines that fly from San Juan to Denver with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $130	Free Cancellation	Rating 5.8 3,177 reviews	Search Frontier flights
JetBlue	PriceFrom $316	Free Cancellation	Rating 7.2 2,913 reviews	Search JetBlue flights
Delta	PriceFrom $381	Free Cancellation	Rating 7.9 7,960 reviews	Search Delta flights
Southwest	PriceFrom $397	Free Cancellation	Rating 8.0 4,248 reviews	Search Southwest flights
American Airlines	PriceFrom $484	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $486	Free Cancellation	Rating 7.4 8,937 reviews	Search United Airlines flights

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Why use momondo?

Why should I use momondo to find a flight deal from San Juan to Denver?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Juan to Denver. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from San Juan to Denver with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Denver from San Juan with this policy.

How can momondo help me find flights from San Juan to Denver?

Once all potential San Juan to Denver flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from San Juan to Denver right now. Can momondo alert me if prices change?

If you are not ready to book a flight from San Juan to Denver now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Denver and let you know when they change.