$174 Find Cheap Flights from Puerto Rico to Denver - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Denver departing on 8/30. 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

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These are the airlines KAYAK users have selected most often from within our search results for flights to Denver
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Cheap Flights from Puerto Rico to Denver

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

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
Tue, Aug 4 - Tue, Aug 18
Frontier Logo
3:36 pm - 2:19 pm
SJU
-
DEN
24h 43m
1 stop
Frontier Logo
5:15 pm - 6:26 am
DEN
-
SJU
11h 11m
1 stop
$370Frontier
Tue, Aug 4 - Tue, Aug 18
Frontier Logo
8:37 pm - 8:07 am
SJU
-
DEN
13h 30m
1 stop
Frontier Logo
5:15 pm - 6:26 am
DEN
-
SJU
11h 11m
1 stop
$371Frontier
Tue, Jul 14 - Sun, Jul 19
Multiple Airlines Logo
3:10 am - 11:00 pm
BQN
-
DEN
21h 50m
1 stop
Multiple Airlines Logo
11:59 pm - 1:42 pm
DEN
-
BQN
11h 43m
2 stops
$602Multiple Airlines
Thu, Aug 27 - Wed, Sep 9
JetBlue Logo
5:33 pm - 9:34 am
BQN
-
DEN
18h 01m
2 stops
JetBlue Logo
3:15 pm - 10:39 pm
DEN
-
BQN
29h 24m
1 stop
$632JetBlue
Booking Insights

KAYAK's insights & trends for flights to Denver

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

What is the cheapest day to fly to Denver?

The average price of all round-trip flights to Denver clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to Denver is Thursday where round-trip tickets can be as cheap as $537. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $987 on average.

What is the cheapest month to fly to Denver?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights 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 to Denver is April, where tickets cost $121 on average for return flights. On the other hand, the most expensive months are June and July, where the average cost of tickets from Puerto Rico is $260 and $243 respectively. For one-way flights, the best month to travel is December with an average price of $71.

What is the cheapest time of day to fly to Denver?

The average price for all round-trip flights to Denver depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Denver is generally in the afternoon, when round-trip flights cost $634 on average. The most expensive time of day to fly to Denver is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $634.

What is a good deal for flights to Denver?

If you’re looking for cheap airfare to Denver, 25% of our users found tickets to Denver for the following prices or less: From San Juan Luis Munoz Marin Intl Airport $618 round-trip.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights 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, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$174
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

FAQs - booking Denver flights

  • How far is Denver Intl Airport from central Denver?

    The city center of Denver is 18 miles from Denver Intl Airport.

  • What is the name of Denver’s airport?

    All flights to Denver land at Denver Intl Airport. The airport code is DEN,and it can also be referred to as Denver or Denver Intl.

  • How much is a flight to Denver?

    On average, a flight to Denver costs $532. The cheapest price found on KAYAK in the last 2 weeks cost $287 and departed from San Juan Luis Munoz Marin Intl Airport.

  • How does KAYAK find such low prices on flights 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 to Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to 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 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Denver

  • Looking for cheap airfare to Denver? 25% of our users found round-trip tickets to Denver for the following prices or less: From San Juan Luis Munoz Marin Intl $705
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Denver flight deals.

Reviews of the top 5 airlines serving from Puerto Rico to Denver

 
See real verified KAYAK customer reviews for airlines flying to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Puerto Rico to Denver. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with 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 4237 reviews
8.6Crew
7.0Food
7.5Entertainment
8.1Boarding
8.0Comfort
Airline reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

2.0 MediocreMatthew, Jun 2026
CVG - MDW
Read more Southwest reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

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 entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

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.

Agency very bad had to cancelled my booking too many changes in the flight changed my flight to 1 week

Trash. Sat on the runway for 40 mins…missed connecting flight because of it now I’m stuck. Thanks…a whole fkn lot.

The flight was delayed significantly and we sat on runway after landing for awhile. Best thing was the flight attendant, Jenny, in first class, who was very professional and attentive. She was excellent - the rest of the flight was not.

The plane was comfortable but the crew wasn’t friendly.

Awfully rude American worker at door when we started boarding flight. Then, walk into a blazing hot airplane with no air conditioning until twenty minutes into the flight. Free entertainment was non existent! My husband, along with the fellow passenger in our row, and I could not get entertainment to work, no WIFI! Really?? Been flying American a long time. Was very disappointed.

Flight was delayed by 6 hours... the level of incompetence was truly astounding. I won't be flying American Airlines again. I don't care if AA is direct and there is a layover with another airline, I'll take the layover.

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

I tried to book a flight with Jet Blue. Your third party company hijacked my attempt with a website that looked like I was booking with Jet Blue. I realized it when I paid. I tried to cancel and was told by a man in India that there were no refunds. $735 stolen, Thanks Kayak!

It was inexplicably canceled and we are stuck in LA, haven't gotten home and it has been an inconvenience having lost work (on unpaid leave for my husband).

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.

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.

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Everything you need to know for your flight to Denver

Information on the airport you'll fly into in Denver