DEN - SJU

$121 Find Cheap Flights from Denver to San Juan

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to San Juan departing on 8/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to San Juan Luis Munoz Marin Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to San Juan, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to San Juan, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Denver to San Juan (DEN-SJU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to San Juan that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to San Juan

Sat, Dec 6 - Thu, Dec 11
Frontier Logo
11:14 pm - 2:12 pmDEN-SJU
11h 58m1 stop
Frontier Logo
5:50 pm - 8:58 amSJU-DEN
18h 08m1 stop
$233Frontier
Find Deal
Wed, Dec 3 - Thu, Dec 11
Frontier Logo
12:51 am - 2:54 pmDEN-SJU
11h 03m1 stop
Frontier Logo
7:00 am - 8:58 amSJU-DEN
28h 58m1 stop
$243Frontier
Find Deal
Mon, Jul 21 - Tue, Jul 29
Frontier Logo
12:34 am - 6:31 pmDEN-SJU
15h 57m1 stop
Frontier Logo
7:34 pm - 8:21 amSJU-DEN
14h 47m1 stop
$247Frontier
Find Deal
Thu, Dec 4 - Thu, Dec 11
Frontier Logo
11:14 pm - 12:37 amDEN-SJU
22h 23m1 stop
Frontier Logo
7:00 am - 8:58 amSJU-DEN
28h 58m1 stop
$253Frontier
Find Deal
Fri, Aug 1 - Wed, Aug 6
Frontier Logo
12:34 am - 10:13 amDEN-SJU
7h 39m1 stop
Frontier Logo
8:15 am - 7:31 pmSJU-DEN
13h 16m1 stop
$255Frontier
Find Deal
Thu, Aug 21 - Tue, Aug 26
Frontier Logo
12:34 am - 8:02 pmDEN-SJU
17h 28m1 stop
Frontier Logo
8:13 pm - 1:13 pmSJU-DEN
19h 00m1 stop
$257Frontier
Find Deal
Sun, Aug 10 - Sat, Aug 16
Frontier Logo
12:23 am - 6:59 pmDEN-SJU
16h 36m1 stop
Frontier Logo
4:54 pm - 7:17 pmSJU-DEN
28h 23m1 stop
$260Frontier
Find Deal
Tue, Jul 22 - Tue, Jul 29
Frontier Logo
8:00 am - 6:02 pmDEN-SJU
8h 02m1 stop
Frontier Logo
12:59 am - 8:28 amSJU-DEN
9h 29m1 stop
$263Frontier
Find Deal
Thu, Aug 7 - Sat, Aug 16
Frontier Logo
8:52 am - 9:04 amDEN-SJU
22h 12m1 stop
Frontier Logo
11:20 am - 8:21 amSJU-DEN
23h 01m1 stop
$264Frontier
Find Deal
Sun, Aug 31 - Thu, Sep 4
Frontier Logo
9:02 am - 7:08 pmDEN-SJU
8h 06m1 stop
Frontier Logo
1:11 am - 8:57 amSJU-DEN
9h 46m1 stop
$265Frontier
Find Deal
Expert advice

Expert advice for your flight from Denver to San Juan

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
DEN

Use the West Security Checkpoint at DEN for faster screening, allowing liquids and laptops to stay in bags.

Read more about DENby Harriet Baskas
SJU

For quick city access from SJU, taxis or Uber are efficient options, taking about 25 minutes to Old San Juan.

Read more about SJUby Gabriel Leigh
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on DEN

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Gabriel Leigh

Gabriel Leigh

Expert on SJU

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Useful Info

KAYAK's insights & trends for Denver to San Juan flights

Get data-powered insights and trends into flights from Denver to San Juan to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Denver to San Juan?

The average price of all round-trip flights from Denver to San Juan Luis Munoz Marin Intl Airport clicked on KAYAK for each day over the last 12 months.

For Denver to San Juan, Thursday is the cheapest day to fly on average and Saturday is the most expensive. Flying from San Juan back to Denver, the best deals are generally found on Thursday, with Sunday being the most expensive.

What is the cheapest month to fly from Denver to San Juan Luis Munoz Marin Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to San Juan Luis Munoz Marin Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to San Juan Luis Munoz Marin Intl Airport is October, where tickets cost $304 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $685 and $561 respectively.

Can I save money by flying with a layover from Denver to San Juan Luis Munoz Marin Intl Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $1,304 on average.

How far in advance should I book a flight from Denver to San Juan Luis Munoz Marin Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to San Juan Luis Munoz Marin Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Denver to San Juan Luis Munoz Marin Intl Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

Good to know

Low seasonSeptember
High seasonMarch
Cheapest flight$121
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly with an average 26% increase in price.
Flight from Denver to San Juan

When to book flights from Denver to San Juan

Are your dates flexible? Find out the best times to travel from Denver to San Juan based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Denver to San Juan flights

  • What is the cheapest flight from Denver to San Juan Luis Munoz Marin Intl Airport?

    In the last 3 days, the lowest price for a flight from Denver to San Juan Luis Munoz Marin Intl Airport was $121 for a one-way ticket and $233 for a round-trip.

  • Do I need a passport to fly between Denver and San Juan?

    Yes

  • Which airports will I be using when flying from Denver to San Juan?

    Denver airport is called Denver Intl and the only airport in San Juan is San Juan Luis Munoz Marin Intl.

  • Which aircraft models fly most regularly from Denver to San Juan?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Denver to San Juan flight route.

  • Which airline alliances offer flights from Denver to San Juan?

    Star Alliance is the only airline alliance operating flights between Denver and San Juan.

  • On which days can I fly direct from Denver to San Juan?

    There are nonstop flights from Denver to San Juan on a daily basis.

  • Which is the best airline for flights from Denver to San Juan, Southwest or United Airlines?

    The two airlines most popular with KAYAK users for flights from Denver to San Juan are Southwest and United Airlines. With an average price for the route of $583 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $680 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Denver to San Juan?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to San Juan.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to San Juan?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Juan from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to San Juan?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Juan with an airline and back to Denver with another airline. Booking your flights between Denver and SJU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to San Juan?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Juan from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Denver to San Juan Luis Munoz Marin Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $368 or less one-way and $608 or less round-trip.

Prefer to fly direct from Denver to San Juan?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Denver Intl to San Juan Luis Munoz Marin Intl.
Find which airlines fly direct from Denver Intl Airport to San Juan Luis Munoz Marin Intl Airport, which days they fly and book direct flights.

Direct departures

Denver Intl to San Juan Luis Munoz Marin Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

San Juan Luis Munoz Marin Intl to Denver Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Reviews of the top 5 airlines serving from Denver to San Juan

 
See real verified KAYAK customer reviews for airlines flying from Denver to San Juan. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to San Juan? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4250 reviews
8.0Comfort
8.1Boarding
7.0Food
8.6Crew
7.6Entertainment
Airline reviews

It was one and half hour late... Not sure if any other experience matters.

4.0 OkaySudhir, Jul 2025LGA - MCI
Read more Southwest reviews

It was one and half hour late... Not sure if any other experience matters.

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

For my birthday trip this was my second time ever flying, this trip was the best.

after landing, we stay 2 hours on the taxi way before reaching the gate The airline and the crew were good though

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

Sat on tarmac for 2 hours and then missed my connecting flight

First time traveling on Southwest since bag fees were implemented. Usual good service. Just more expensive now.

Everything was on time. I was disappointed by the front section female, African American flight attendant. I did not see her name tag or would have identified by name not race. As passengers moved to the bathroom early in flight, she would say with a disdainful tone “I have to say the seat belt light is on” then go back to her book. Better trained flight attendants say something like be careful the seat belt light is on.

Cluster mess boarding. Can't wait for SWA reserved seating. Internet didn't seem to work on the plane.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

The seat and leg room was not good. The food and beverage service was good.

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

No food service almost missed because of first flight delays

There were mutliple delays. There was inconsistent, delayed, and poor communication regarding the delays.

flight was delayed for hours with no explanation. The plane was a very old aircraft.

Spend hours delayed with no food, water anything sitting on the aieplane with no ability to eat or use the restroom. My entire experience was the absolute worst. I will never fly jet Blue again.

It would have been nice if they had offered more than one set of snacks

Seats were not too comfortable; it was impossible to locate the underseat power outlet.

You get what you pay for with JetBlue. Every little thing costs more, you are nickel and dimed until the end. Entertainment doesn’t function. Flight attendants do the bare minimum.

The check in and boarding process was a bit of a cluster. Two people at the counter to check in, three random lines that nobody knew which was for what, and people kept getting shuffled from one line to another for no apparent reason because then they’d get shuffled back and end up getting out further back in the line than they were originally. I only had to hand my already checked bag over and it took 45 minutes. I was never assigned a seat so when I tried to board I was pulled out of line again while someone had to try to manually assign me a seat. During the flight I got up to go to the bathroom, and there was an attendant in the aisle offering pillows etc and it was a 30 min wait unbuckled standing by the bathrooms because she said I couldn’t go past her. First and last time flying jet blue to be honest.

Communication since no reason or explanation was given for 3 hrs delay

The flight departed more than 1 hour late. Leg room is bigger than most airlines

Flight was delayed several 3 hours - no reason was given and no communication what so ever.

The AA app really sucks ... Every flight & connecting flights were delayed over 30 mins. One connecting flight on American Eagle said it was delayed in its arrival ... when it was actually parked across from the gate for over 1 hr before they pulled it to the gate. Seats in the economy/ main cabin are packed together like sardines ... no leg room.

Initial flight was cancelled at the time of arrival to the airport, flight alternative requires switching from direct to flight with a layover, and the plane felt like it would split apart, it was so rattle-y.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

Flight was delayed again and again ultimately almost three hours getting us to our location at close to midnight by the time we got in and out of airport to destination. I had taken time off work to enjoy an evening at destination and that was now wasted

AA re-routed flight from HNL to LAX due to delay. My group of 3 with reserved seats in row 9 was broken up, with one assigned to a middle seat, another in the last row of the plane. Not happy. No explanation to the delay. No apologies. No compensation. Would have been nice to be offered an Admiral Club admission or a voucher for the extra 3 hours of layover in LAX. Could not hear the boarding gate announcements in LAX. Adjacent gate was boarding at the same time. Loud speakers were competing against each other. Barely made my boarding group.

Boarding gate in Honolulu was staffed with a great clerk with a soothing voice despite the flight delay of over an hour. Flight attendants in the plane were all grumpy, not pleasant looking bunch. Their sour attitude showed throughout the flight. Inly able to get a select few movies started. Most of the movie links in the “free entertainment” did not work.

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

The flight delay in Dallas created a domino effect that impacted all of the connecting flights. It also increased the number of connections. I missed my flight from Casablanca to Marrakech because of the tight turnaround when landing in Casablanca. . CMN airport was understaffed. Only one person could help while other employees were just watching him. It was an extremely frustrating situation. People were crying and slamming their palms on the counter when speaking to the customer service provider, Allabough (man’s name?). Allabough couldn’t change my flight in the system. simultaneously, I was on the call with America. Airlines customer service rep named Solomon that said he couldn’t change it either. So, I took a ONYA voyages train to from Casablanca to Marrakech to get there on Friday June 26. This was unpredictable trip.

The flight delay in Dallas created a domino effect that impacted all connecting flights, leading to an increase in the number of connections. As a result, I missed my flight from Casablanca to Marrakech due to the tight turnaround when landing in Casablanca. CMN Airport was understaffed; only one employee was available to assist passengers while others just stood by and watched. It was an extremely frustrating situation. Many passengers were crying and banging their hands on the counter while talking to customer service representative Allabough. Unfortunately, Allabough couldn’t change my flight in the system. At the same time, I was on the phone with an American Airlines customer service representative named Solomon, who said he couldn’t make the change either. So, I decided to take an ONYA Voyages train from Casablanca to Marrakech to reach my destination on Friday, June 26. It turned out to be an unpredictable trip.

The flight was fine and the crew awesome. The problem is ORD and AA. Computers went down, ORD fell apart and a 40 min flight turned into a 3 hour trip. Guess the answer is to not try and fly to ORD after noon. But, as I said, crew was awesome and did everything they could to lesson the flight time.

I’m not gonna fly Frontier Airlines because booking is not an option. No water or food is for high price, not equipped for health emergency incompetent crew for emergency services. Cheap airline shows it is cheaper in all service categories. Boarding is the best of all airlines!

Very bad! No good service delayed my second connection flight

Frontier is terrible. Paid for exit row, not given exit row, refused to refund fee.

2 hour delay due to late plane, wrong size plane causing overbooking, and people getting off and on the plane after boarding was completed.

The worst. We never made our connection and they did absolutely nothing to help us at the airport.

I never got to experience the flight because they delayed my first flight and I missed this one. Then Frontier didn't want to help me rebook a flight to get me to my final destination.

The Boarding process in Denver was chaotic, and since the line was so long, we were lined up very far from the gate. If there were any announcements from the gate staff, we didn't hear them. The flight attendants were spectacular. The only negative part of the flight was sitting by a 2 1/2 year old who was unruly and unfortunately had parents that matched his behaviors. Also, the restaurants in Denver on the E concourse, they didn't have food (passengers could only order 1 item on the entire menu) or the restaurants had 12-14 people waiting for orders to be prepared and another 6 people waiting to order. If you have a layover in Denver and need to grab food, be prepared to visit the shops with pre-packaged sandwiches, or you can visit another concourse but it may take a while to transit throughout the airport.

I liked the price of the flight and the chance to buy a seat with no person seated in the middle seat.. Also the flight was right on time.

Everything went as planned. Crew was great. Seats were still not that comfortable.

they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation

Everything you need to know for your flight from Denver to San Juan

Information on your arrival and departure airports

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