SJU - DEN

$149 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 9/1. 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
$326
Typical prices: $545-$302
Southwest
Tue 8/25Wed 9/30
SJU - DEN • 1 stop
Cheapest non-stop
$570
Typical prices: $711-$621
JetBlue
Thu 7/2Sun 7/5
SJU - DEN • Non-stop
Top airlines
Cheapest • from $326 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with United Airlines. Average duration is 6h 35m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $334 (round-trip)
Shortest trip • 8h 35m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 22% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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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Expert advice
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

Tue, Aug 25 - Wed, Sep 30
Southwest Logo
10:30 am - 4:05 pm
SJU
-
DEN
7h 35m
1 stop
Southwest Logo
8:05 am - 10:00 pm
DEN
-
SJU
11h 55m
1 stop
$326Southwest
Mon, Aug 10 - Tue, Aug 18
Frontier Logo
7:10 am - 8:03 pm
SJU
-
DEN
38h 53m
2 stops
Frontier Logo
5:15 pm - 6:26 am
DEN
-
SJU
11h 11m
1 stop
$334Frontier
Tue, Aug 4 - Tue, Aug 18
Frontier Logo
6:00 am - 8:03 pm
SJU
-
DEN
16h 03m
2 stops
Frontier Logo
5:15 pm - 6:26 am
DEN
-
SJU
11h 11m
1 stop
$339Frontier
Tue, Aug 4 - Tue, Aug 11
Frontier Logo
6:45 am - 9:03 am
SJU
-
DEN
28h 18m
2 stops
Frontier Logo
11:40 pm - 12:28 am
DEN
-
SJU
22h 48m
1 stop
$355Frontier
Tue, Aug 4 - Tue, Aug 11
Frontier Logo
8:37 pm - 8:07 am
SJU
-
DEN
13h 30m
1 stop
Frontier Logo
11:40 pm - 12:28 am
DEN
-
SJU
22h 48m
1 stop
$357Frontier
Wed, Aug 19 - Sun, Aug 23
Southwest Logo
10:30 am - 7:50 pm
SJU
-
DEN
11h 20m
2 stops
Southwest Logo
10:40 am - 10:45 pm
DEN
-
SJU
10h 05m
1 stop
$358Southwest
Tue, Aug 4 - Tue, Aug 18
Frontier Logo
6:45 am - 9:03 am
SJU
-
DEN
28h 18m
2 stops
Frontier Logo
5:15 pm - 6:26 am
DEN
-
SJU
11h 11m
1 stop
$369Frontier
Thu, Jul 2 - Sun, Jul 5
Frontier Logo
6:44 am - 10:59 pm
SJU
-
DEN
18h 15m
1 stop
Frontier Logo
6:05 am - 11:58 pm
DEN
-
SJU
15h 53m
1 stop
$371Frontier
Wed, Aug 5 - Tue, Aug 18
Frontier Logo
3:36 pm - 11:48 pm
SJU
-
DEN
10h 12m
1 stop
Frontier Logo
6:03 am - 4:34 pm
DEN
-
SJU
8h 31m
1 stop
$376Frontier
Tue, Aug 4 - Tue, Aug 18
Frontier Logo
6:45 am - 9:03 am
SJU
-
DEN
28h 18m
2 stops
Frontier Logo
5:15 pm - 6:26 am
DEN
-
SJU
11h 11m
1 stop
$378Frontier
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.

How much is a round-trip flight from San Juan Luis Munoz Marin Intl Airport to Denver?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Juan Luis Munoz Marin Intl Airport to Denver departing in August.

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 Friday 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 August, where tickets cost $398 (return) on average. On the other hand, the most expensive months are April and January, where the average cost of round-trip tickets is $667 and $571 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 13 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$149
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly and prices are also 1% lower on average.
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 5 days, the lowest price for a flight from San Juan Luis Munoz Marin Intl Airport to Denver was $149 for a one-way ticket and $326 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 8 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 $578 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $610 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 $344 or less one-way and $618 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.
7.9
SouthwestOverall score based on 4235 reviews
8.1Boarding
7.5Entertainment
8.6Crew
8.0Comfort
7.0Food
Airline reviews

It was great. The gate staff were very helpful in Portland when my son forgot his rolling bag and had to go back to get it just in time to make it on the plane. We really appreciate that. Great job!

10.0 ExcellentAnonymous, Jun 2026
DEN - ORF
Read more Southwest reviews

It was great. The gate staff were very helpful in Portland when my son forgot his rolling bag and had to go back to get it just in time to make it on the plane. We really appreciate that. Great job!

Airline is not very senior friendly. Flights are late, forcing us to run to the connecting flight. Food is awful. Wish they would go back to pretzels and peanuts. During flight, pressurization isn’t quite right and all of our ears get plugged. Everything is nickel and dime, charging for boarding, seat selection and legroom. While a screen at the desk in the gate area says check your roll on bag now for free due to space limitation, the employee at the desk will not check the bag without a $100 fee. Insane.

Kayak could’ve posted the correct gate number. Almost missed my flight.

Slow boarding, limited food and drink portions. Bad delays and turbulence

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

OKay. I sat in the back of the plane and it was really loud between babies and little kids, and adults who.like to talk a lot and loudly most of the flight.

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

Was fine, delayed and feels like southwest is always late

I don't know why flying out of Sarasota requires two plane changes.

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

Boarding was smooth and efficient. The only food was some pretzels, but it was a short flight. Not much to order if you were hungry.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

Late- that’s what United does best. Missed my connection, rebooked to a flight 17 hours later and had to spend $500 on a hotel. What did I get? A $15 meal voucher. What can you get in an airport for $15. I hate United so much.

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

Very friendly and helpful staff on board and United was excellent when I missed my onward flight due to the delay in London. Very well organised meant much less stress

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

The rear seat on the second leg should be illegal. There’s no way you should make somebody sit that close to the washroom. Very awkward.

Leave on time. We waited on the plane for hour hours and it was hot and smelly

Check in was easy. Flights were smooth. Flight attendants were courteous and friendly.

Two hours delay, probably one hour because they didn’t bring catering and they had to bring water in board. There a change of aircraft. But delays galore at CLT so it must be a CLT and/or AA operation issue. The 1 hr additional delays because nobody could bring 2 packs of water sooner is probably the best example of this airline operates

Crew was nice, aircraft dated, entertainment same. Internet is expensive and terribly slow. Food pretty bad

Horrible experience. Food was ridiculous, insufficient, and not appetizing at all. They served sugary granola bar for breakfast. Furthermore, my bags were delayed and delivered damaged and American made it impossible to file for damages. Furthermore, the flights were delayed causing unnecessary stress given the connecting flights. It was awful experience, would never want to fly American.

My flight times changed 4 times since I originally booked the flight. The last time being the day of flight - a 2 hour delay. This meant instead of getting into IAH at 9:30p, I got in at 2:30a. This was very disappointing!!!

Flight was delayed 5 hours. Initial reason for delay was 'maintenance' - which makes sense. Then, the additional 2 hours continued to say it was maintenance - when I know EWR had a 2 hour delay. AA did not say that. Additionally, when boarding, there was only one agent at the counter for a long time - until another came to help. After boarding, we had to wait another 45 minutes due to 'no catering'. So while we waited for catering, AA continued to board additional passengers - which seemed odd - and raised questions about what really was going on. I sat in First Class. During the flight, the flight crew allowed a significant number of non-First Class passengers to use the front bathroom - which created a very crowded environment in First Class which was uncomfortable. This also delayed First Class passengers from using the bathroom. Overall, horrible experience.

My table was broken so it made it difficult to eat the food during the service. I was also informed that my luggage did not make it with me to Phoenix. I live two hours away so this makes it even more stressful to try and arrange a time for pick up

The Charleston, WV airport was cute. Very good staff and small enough to feel comfortable. The plane had more leg room than bigger planes. Much more comfortable.

Another uncoordinated American experience. Always surprises me at DFW for them of all places. Have to take this flight as there are no other good time options. We knew from the start that something was wrong, but the pilot wouldn't tell us. I just watched my Kayak app grow the delay by 10 minutes as it went to 3.5 hours. They were uncoordinated with maintenance (as maintenance, when finally arriving, knew within 15 minutes the plane wasn't going. No 'sorry' or 'this is what is going on' comment. The pilot seemed unfazed / didn't care about the process we were going through.

JetBlue worker, Blythe, was so amazing at the DCA counter. If it wasn’t for her, I’m not sure we would’ve made it through. Please thank her!

They lost my luggage and refuse to help. Terrible airline. I've never experienced worse customer service in my life. Pretty much just told me too bad that I lost all my luggage, not caring that I am stuck in Europe for 2 weeks with absolutely nothing.

You should have had Wifi to make it much enjoyable.

The flight out was delayed from 3:40pm to 5pm and again to 8pm. We boarded after 5pm, had to disembark because they could not get the Engine started, then we switched gates and got a new plane and did not board until after 8pm.

The flight was delayed after already taxiing from the gate due to a malfunction. After 3 hours we were told the flight was canceled. The next flight available was Sunday. My daughter and I stayed overnight in the airport due to this issue. I was given a $12 meal voucher. Unacceptable

Whole experience was poor. Delayed 2 hours. Lied about the delays. Was all jet blues fault and tried to blame on air traffic control. Sent out other let trips and wouldn't allow people to switch aircraft.

My bag was not loaded on my flight. it was not communicated to me until i was waiting for my bag at my destination. there was no confirmation of when my bag was arriving and no way to track it.

Nice plane, clean, wifi available and movies. All the flight attendants were courteous.

The gate attendant in Boston had a high raspy voice and spoke much too fast to be understood. Not pleasant.

The flight was delayed for more than 3 hours the flight attendant was so angry, it was my first flight with JetBlue but i don’t think I flight with them again.

There weren't enough employees at check in took awhile to get bags checked. There wasn't a wheel chair for me, I was sent to someone who turns out to work for a different airline, if My flight hadn't been delayed I probably would have missed my flight as it was, by the time I arrived at my gate, they started boarding in about 15 minutes. I don't know who took me to my gate, definitely was not the normal people who take passengers to the gate. I'm guessing she may have been in a management position. I wish I knew her name, she went beyond to help me. With that said everyone was kind, and were doing the best they could. So, I choose to say it was an Adventure, stressful start, but good. In the end went well. The situation was not only difficult for passengers but the employee's.

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

It was an early flight and most people napped/slept and the crew let us which was nice.

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

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.

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

Information on your arrival and departure airports