SJU - DEN

$124 Find Cheap Flights from San Juan to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Juan to Denver departing on 4/21. 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, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to Denver.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to Denver.
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Everything you should know

Cheapest round-trip
$237
Overall average: $365
Frontier
Thu 4/16Tue 4/21
SJU - DEN • 1 stop
Cheapest non-stop
$557
Typical prices: $696-$811
United Airlines
Thu 4/16Tue 4/21
SJU - DEN • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
San Juan Airport is efficient for departures.
DEN offers a 40-minute train ride to downtown.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
You can fly direct with United Airlines. Average duration is 6h 47m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg $323 (round-trip)
Shortest trip • 8h 35m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 21% price drop
Most popular
Good to know
Good to know
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Good to know
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Denver!
Flight Deals
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Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Juan to Denver 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 San Juan to Denver

Thu, Apr 16 - Tue, Apr 21
Frontier Logo
3:03 pm - 10:29 pm
SJU
-
DEN
9h 26m
1 stop
Frontier Logo
11:59 pm - 9:54 am
DEN
-
SJU
7h 55m
1 stop
$237Frontier
Thu, Apr 16 - Mon, Apr 27
Frontier Logo
3:19 pm - 10:59 pm
SJU
-
DEN
9h 40m
1 stop
Frontier Logo
11:59 pm - 9:54 am
DEN
-
SJU
7h 55m
1 stop
$240Frontier
Mon, Apr 13 - Sat, Apr 25
Frontier Logo
3:08 am - 5:23 pm
SJU
-
DEN
16h 15m
1 stop
Frontier Logo
11:59 pm - 2:08 pm
DEN
-
SJU
12h 09m
1 stop
$242Frontier
Thu, Apr 16 - Sat, Apr 25
Frontier Logo
6:30 am - 10:59 pm
SJU
-
DEN
18h 29m
1 stop
Frontier Logo
11:59 pm - 12:29 am
DEN
-
SJU
22h 30m
1 stop
$247Frontier
Thu, Apr 16 - Tue, Apr 21
Frontier Logo
11:30 am - 9:40 am
SJU
-
DEN
24h 10m
1 stop
Frontier Logo
11:59 pm - 9:54 am
DEN
-
SJU
7h 55m
1 stop
$248Frontier
Tue, Apr 7 - Wed, Apr 15
Frontier Logo
3:16 am - 11:09 pm
SJU
-
DEN
21h 53m
1 stop
Frontier Logo
11:59 pm - 11:29 pm
DEN
-
SJU
21h 30m
1 stop
$249Frontier
Wed, Apr 15 - Sat, Apr 25
Frontier Logo
10:54 am - 10:59 pm
SJU
-
DEN
14h 05m
1 stop
Frontier Logo
11:59 pm - 12:29 am
DEN
-
SJU
22h 30m
1 stop
$251Frontier
Wed, May 27 - Wed, Jun 3
Frontier Logo
6:41 pm - 8:27 am
SJU
-
DEN
15h 46m
1 stop
Frontier Logo
11:59 pm - 3:50 pm
DEN
-
SJU
13h 51m
1 stop
$259Frontier
Mon, Apr 13 - Sat, Apr 25
Frontier Logo
3:08 am - 10:29 pm
SJU
-
DEN
21h 21m
2 stops
Frontier Logo
11:59 pm - 2:08 pm
DEN
-
SJU
12h 09m
1 stop
$261Frontier
Fri, May 15 - Mon, May 18
Frontier Logo
4:11 pm - 12:09 am
SJU
-
DEN
9h 58m
1 stop
Frontier Logo
11:59 pm - 9:54 am
DEN
-
SJU
7h 55m
1 stop
$267Frontier
Booking Insights

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

Get data-powered insights and trends into flights from San Juan to Denver 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 San Juan to Denver?

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Juan Luis Munoz Marin Intl Airport to Denver, 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 San Juan Luis Munoz Marin Intl Airport to Denver is April, where tickets cost $365 (return) on average. On the other hand, the most expensive months are January and July, where the average cost of round-trip tickets is $571 and $516 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Juan Luis Munoz Marin Intl Airport to Denver, 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 San Juan Luis Munoz Marin Intl Airport to Denver, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Expert advice

Expert advice for your flight from San Juan to Denver

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on DEN

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.

Gabriel Leigh

Gabriel Leigh

Expert on SJU

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.

Good to know

Low seasonSeptember
Cheapest flight$124
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from San Juan to Denver

When to book flights from San Juan to Denver

Are your dates flexible? Find out the best times to travel from San Juan to Denver 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 San Juan to Denver flights

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

    In the last 3 days, the lowest price for a flight from San Juan Luis Munoz Marin Intl Airport to Denver was $124 for a one-way ticket and $237 for a round-trip.

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

    Yes, you’ll need a passport to travel to Denver from San Juan.

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

    The Boeing 737 MAX 9 is the aircraft model that flies most regularly on the San Juan to Denver flight route.

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

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between San Juan and Denver, with SkyTeam being the most commonly used for this route.

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

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

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

    The two airlines most popular with KAYAK users for flights from San Juan to Denver are Southwest and Delta. With an average price for the route of $580 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $560 and an overall rating of 7.9.

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

    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 San Juan to Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from San Juan 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 San Juan to Denver?

    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 Denver with an airline and back to San Juan with another airline. Booking your flights between San Juan and DEN 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 San Juan to Denver?

    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 Denver from San Juan 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 San Juan Luis Munoz Marin Intl Airport to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $276 or less one-way and $500 or less round-trip.

Prefer to fly direct from San Juan to Denver?

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

Direct departures

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

Direct returns

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

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

 
See real verified KAYAK customer reviews for airlines flying from San Juan to Denver. 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 San Juan to Denver? 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 4318 reviews
8.0Comfort
8.1Boarding
7.5Entertainment
8.6Crew
7.0Food
Airline reviews

Long layover between flights to Long Island from BWI - need better coordination between flights

4.0 OkayKenny, Mar 2026
TPA - BWI
Read more Southwest reviews

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

I realize they are still working out kinks with the new boarding process, but by the time I boarded in group 5, most of the bins were full. All airlines should better enforce small bags and jackets going under the seats until everyone has boarded.

WiFi was not working and didn’t have a beverage service

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

It’s always a great time flying with united airlines.

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

As great a red-eye flight as red-eye flights can be.

Both of my flights arrived early and check in process was smooth

Everything was on time Will use united again for sure

I just think it’s unfortunate that Airlines have completely abandoned the idea of serving any kind of decent or even real food on flights, not even on a four hour flight!? Those days are gone, I guess.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

Delayed by 1.5 hours. Terrible apologies, half hearted at best. It will be a LONG time until i book w Jet Blue again. Very disappointed.

Qatar does not answer phone calls and communicate with travelers about trip cancellations

The seats have so much room. They give great free snacks. Staff was so nice.

My check in was stressful. I somehow lost my seat from my original booking, the plane showed no availability/no seat when it was time to check-in. I called and was instructed to try to get a seat at the airport. I asked if it was a full flight and the travel agent said the site showed some seating but was not able to secure one for me. Why not? On my way to the airport the app finally revealed one available seat towards the back of the aircraft that I was able to book. It ended up being an overbooked flight, so glad I wasn't stuck.

Flights with JetBlue from San Diego to Boston are a miserable experience. The flight was delayed about 1.5 hours due to “weather” supposedly but the flights for other airlines left on time so it just have been some kind of weather that only affects JetBlue. I had a small carry on - purse. The crew stored it in a bin 2 rows down from me because they were using the bin next to my seat for other people’s stuff. The TV screen in the emergency row seats does not work. It just was awful from start to finish. When we landed, we had to sit inside the plane for a very long time because the plane had to be moved to a different gate.

They made me check my bag and I didn't need to as there was overhead space available. I paid for a seat towards the front of the plane and it didn't recline. I requested a refund and they declined to give me one.

I have to congratulate Kayak (and Dylan the Chatdeal agent) because because when we decided extended our trip in Florida by two days, there were many direct flights oprions back to Boston available on the Friday we wanted to fly on the JetBlue website, but once I canceled the original JetBlue flight on their website, those direct return options disappeared immediatley! I think it's a game JetBlue plays. . Luckily, I checked Kayak and they had a direct flight that wasn't appearing on JetBlue's website and so I booked it, and we were able to fly home direct through the Kayak booking when JetBlue was offering nothing (even though I have been a True Blue member for 20 years, and also am a Mosaic member). So much for loyalty- their algorithm for booking is like a shell game. JetBlue used to be a good company but now they're worse than anyone. Also I was originally booked this trip to Florida, two months before the departure date, I booked the trip on JetBlue's website and then after the payment part, they said there was a problem and that I needed to do the booking again, so when I immediately went to rebook , the price had gone up 30%! I called them and it sounded like they had heard this so many times before and the guy told me to check back in 10 minutes and the price would be back to where it was when I was booking- it but it never was. How could the price go up 30% in one minute two months before the flight???? They're playing a game with their customers. Anyways, I booked a cheaper flight then at a less convenient time. So fast forward two months the night before the 7 AM flight, they sent me an email at midnight when I was sleeping to let me know that my flight at 7 AM had been canceled. The only thing they offered was a flight that night from from a different airport (Providence) to a different airport in Florida (West Palm Beach) or a flight two days later. No compensation, nothing. They couldn't of tried to get another plane to the Boston airport? They had all night to do it. I passed on their ridiculous options and flew with Delta and it was a great experience. Of course, I had to pay a lot more booking on the same day, but JetBlue doesn't care. I put in a lengthy complaint with the agent who assured me someone would get back to me by email within three days and I haven't heard a thing. JetBlue used to be a good company but now they're among the worst. The only thing they still have is decent legroom, but the corporate bean counters will probably start taking that away too.

We were made to wait in the airport for six hours for a flight that was ultimately canceled.

It was a pretty smooth flight, I tend to get mini anxiety attacks during flights, however, this time was pretty smooth and I was able to relax. The only thing, I was having issues to connect to the Flyfi internet. I was not able to connect at all, I turned off my phone a couple times and didnt work.

Both flights were significantly delayed. The flight experience itself was great.

After changing the departure gate 5 times making us mo e from one side of the airport to the other and then back the flight was delayed nearly 2 hours. The male flight attendant had a bad attitude with the guest being condescending, disrespectful with people who were already on edge.

Easy boarding. Rows are smaller but that may be an older and bigger me now :)

It would have been nice if American tried to care.

American Airlines did everything they could with the high Spring Break crowd. I was frustrated to be changed from 1st class to a middle seat at the back of the plane. This has happened before, not sure booking 1st class and paying the extra actually works.

I booked 1st class, my flights were changed and I was sitting in the middle at the back of the plane. A far cry from the 1st class I purchased for my flights. I am grateful I arrived on time.

Movie selections were very limited. Meals were not f So good.

Older airplane with worn out seats. No entertainment system at all. Connecting to Wi-Fi was problematic and hit and miss.

AA is flying sub par aging 787's to Tokyo. I fly other 787's long haul and these are at the bottom. Seats don't work well, tray tables don't work well and were dirty. The flight was great, the plane was not.

There was no beverage service and the only time I saw a crew member walk through the cabin is when we were preparing to land.

Our flight was delayed 3 times and this is why I am giving such low reviews. Everything else was okay but being in the airport at 4:30pm for my initial flight at 7pm to not leave until after 9:30pm is insane,

Frontier line changes my flight schedule with out my authorization. They never ask me and with out my concern they cut off 4 hours of my vacation they force my to leave 4 hours early from Puerto Rico.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

Good- no snacks on a 4+ hour flight is painful but more painful was the lack of WiFi.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

The experience was good. No frills but I got there safe and sound and on time.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

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

Information on your arrival and departure airports