$108 Find Cheap Flights from Puerto Rico to Denver - Compare and Save

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Cheap Flights from Puerto Rico to Denver

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Puerto Rico to Denver

Fri, Dec 4 - Tue, Dec 8
Frontier Logo
2:36 pm - 6:29 amSJU  San Juan Luis Munoz Marin Intl-DEN Denver Intl
18h 53m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
8:40 pm - 1:07 amDEN  Denver Intl-SJU San Juan Luis Munoz Marin Intl
25h 27m2 stops Dallas/Fort Worth Atlanta Hartsfield-Jackson
$224Frontier
Wed, Dec 2 - Mon, Dec 7
Frontier Logo
3:28 am - 9:50 pmSJU  San Juan Luis Munoz Marin Intl-DEN Denver Intl
21h 22m2 stops Miami Dallas/Fort Worth
Frontier Logo
8:40 pm - 1:58 amDEN  Denver Intl-SJU San Juan Luis Munoz Marin Intl
26h 18m2 stops Dallas/Fort Worth Miami
$227Frontier
Sat, Nov 21 - Sat, Nov 28
Multiple Airlines Logo
7:31 am - 8:06 pmSJU  San Juan Luis Munoz Marin Intl-DEN Denver Intl
15h 35m1 stop Fort Lauderdale
Multiple Airlines Logo
6:58 pm - 1:59 pmDEN  Denver Intl-SJU San Juan Luis Munoz Marin Intl
40h 01m2 stops Tampa Fort Lauderdale
$455Multiple Airlines
Wed, Apr 7 - Mon, Apr 12
Southwest Logo
5:05 am - 2:30 pmSJU  San Juan Luis Munoz Marin Intl-DEN Denver Intl
11h 25m2 stops Baltimore/Washington Grand Rapids Gerald R. Ford Intl
Southwest Logo
10:30 am - 11:50 pmDEN  Denver Intl-SJU San Juan Luis Munoz Marin Intl
11h 20m2 stops Detroit Metropolitan Wayne County Baltimore/Washington
$480Southwest
Wed, Apr 7 - Sun, Apr 11
Southwest Logo
5:35 am - 1:50 pmSJU  San Juan Luis Munoz Marin Intl-DEN Denver Intl
10h 15m2 stops Orlando Lambert-St Louis
Southwest Logo
12:15 am - 1:10 pmDEN  Denver Intl-SJU San Juan Luis Munoz Marin Intl
10h 55m1 stop Orlando
$480Southwest
Tue, Nov 17 - Fri, Nov 20
Multiple Airlines Logo
8:45 am - 10:04 pmSJU  San Juan Luis Munoz Marin Intl-DEN Denver Intl
16h 19m3 stops Fort Lauderdale Houston George Bush Intcntl Detroit Metropolitan Wayne County
Multiple Airlines Logo
9:17 pm - 4:14 pmDEN  Denver Intl-SJU San Juan Luis Munoz Marin Intl
15h 57m1 stop Minneapolis St Paul
$529Multiple Airlines
Tue, Feb 23 - Sun, Feb 28
United Airlines Logo
2:21 pm - 6:07 pmSJU  San Juan Luis Munoz Marin Intl-DEN Denver Intl
6h 46mnonstop
United Airlines Logo
9:46 am - 6:25 pmDEN  Denver Intl-SJU San Juan Luis Munoz Marin Intl
5h 39mnonstop
$627United Airlines
Mon, Dec 21 - Thu, Dec 31
United Airlines Logo
6:35 am - 10:17 amSJU  San Juan Luis Munoz Marin Intl-DEN Denver Intl
6h 42mnonstop
United Airlines Logo
9:46 am - 6:25 pmDEN  Denver Intl-SJU San Juan Luis Munoz Marin Intl
5h 39mnonstop
$627United Airlines
Tue, Dec 22 - Mon, Dec 28
American Airlines Logo
8:00 am - 3:32 pmSJU  San Juan Luis Munoz Marin Intl-DEN Denver Intl
10h 32m2 stops Miami Dallas/Fort Worth
American Airlines Logo
12:54 am - 11:42 amDEN  Denver Intl-SJU San Juan Luis Munoz Marin Intl
7h 48m1 stop Charlotte Douglas
$636American Airlines
Tue, Dec 8 - Sun, Dec 13
American Airlines Logo
9:38 am - 6:14 pmSJU  San Juan Luis Munoz Marin Intl-DEN Denver Intl
11h 36m2 stops Miami Dallas/Fort Worth
American Airlines Logo
10:12 am - 9:33 pmDEN  Denver Intl-SJU San Juan Luis Munoz Marin Intl
8h 21m1 stop Charlotte Douglas
$636American Airlines
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?

Based on KAYAK data, the cheapest day to fly to Denver is Thursday where round-trip tickets can be as cheap as $486. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $960 on average.

What is the cheapest month to fly to Denver?

The cheapest month for flights to Denver is February, where tickets cost $459 on average for return flights. On the other hand, the most expensive months are April and July, where the average cost of tickets from Puerto Rico is $667 and $621 respectively. For one-way flights, the best month to travel is August with an average price of $224.

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

The cheapest time of day to fly to Denver is generally in the afternoon, when round-trip flights cost $654 on average. The most expensive time of day to fly to Denver is generally in the morning, which is peak travel time and where the average cost of a ticket is $707.

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 $541 round-trip.

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

To get a below average price, you should book around 4 weeks before departure, which saves you about 18% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low season

June

Cheapest flight

$108
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly and prices are also 2% 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 $462. The cheapest price found on KAYAK in the last 2 weeks cost $194 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 $490

  • 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

 
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 4217 reviews
7.0Food
7.4Entertainment
8.1Boarding
8.6Crew
8.0Comfort
Airline reviews

Flight was delayed again. I fly out every other weekend and lately the flight is delayed 3 out of five times 🤷🏻‍♀️

6.0 GoodDelores, Oct 2026
Read more Southwest reviews

Flight was delayed again. I fly out every other weekend and lately the flight is delayed 3 out of five times 🤷🏻‍♀️

Southwest’s point to point system caused a 2 hour delay due to the crew being late from their inbound flight. Also, the WiFi and entertainment didn’t work on the plane.

The Southwest airline was ok. A big thank you to Kayak team (David), who worked with me on Sunday afternoon to rebook my travel from Burbank, CA, to CVG. My original flight on Sunday was delayed, so I had to cancel Sunday flight and rebook my travel to Monday. Could not have done it without help from David from Kayak team. Ante Soda GE Aerospace

Flight time kept changing and so did the gate. It was very frustrating

Friendly crew kept coming by to make sure all was ok, provide additional refreshments, etc.

Flight was delayed by 2 hours, meaning that a flight to Dwnver which should have arrived at 11pm came into the airport at 1 am. Made for a very long day.

Crew was rude, flight was late, wifi didn't work, no food, basically nothing about this flight was good.

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.

We waited in the airplane for over 45 min for a southwest employee to make the flight. This cause over half the plane to miss their connecting flight in Denver. When we confronted the desk upon arrival, they told us the only flight they had was the next day leaving at 8:50 pm!!! Or they offered to get us to Burbank or LA, but after that we were on our own to get back to Santa Barbara. I paid for a flight from sba to bna bna to sba. My re entry into mom mode has been 💯 rough because of southwest mistake with my flight. And now I’m leaving to Reno tomorrow for a vballl tournament and just discovered that my leg in Vegas has me and my 3 kids on a stand by flight even though I had booked these ticket last year November!! Do better southwest!

I appreciate the staff who allowed me to board though I arrived a little late! Regarding the assigned seating, I had booked my flight before this change and wasn't aware of the change at the time, and so I didn't select a seat at booking as I didn't realize it was relevant. Better communication about the change would have been helpful for preparing.

I need to note that this flight experience was generally fine but the boarding situation was absolutely a mess and there wasn’t any actual priority boarding. I rated the experience poorly because I’m am genuinely so frustrated with the crew on United taking the baggage space in first class. This flight it didn’t happen, but the last few flights (when I ironically don’t get an opportunity to provide feedback) have been spoiled because upon entering the first class cabin as one of the first few seated passengers, the overhead bins are full and ‘crew’’ tags are on the bags of those taking space. I don’t intend to infer some sort of a class or caste system but it’s absolutely ridiculous that the crew takes the overhead storage above and beyond their most loyal and lucrative customers. They should not even have economy space IMO. And I’ve gotten grief when I’ve noted to the crew the ridiculousness of the notion that the crew (who are the last off the plane) should have priority over flyers who pay. I hope you find a way to convey this message to United because it’s happening with increasing frequency and I intend to find a way to expose the specific crew members who are doing this on a flight by flight basis. (And I have a day job)

Seats needs to be wirer and food is very poor

Pretty much the exact same comments for this flight, there was crazy weather!

I have been flying united for a long time but now I’m done

1) United economy seats barely recline. 2) I have yet to get United WiFi to work, after numerous flights.

Return flight was perfect. All on time and no hiccups. However, going was another story. I don't blame United for the weather, but I am rather disappointed in its response to my getting stranded in my layover city for the night. United gave me a $20 food voucher. That's it. But besides this policy, the employees were incredibly helpful rerouting me to my final destination in Fort Lauderdale, FL. So overall, 8 out of 10. 10 out of 10 for flight comfort, inflight service and before flight service. 5 out of 10 for layover handling.

Santa Barbara is a super small and easy airport. Breezed through rental car return, breezed through Security, ordered a coffee and muffin and to my gate in less than 30 minutes. Maybe because it was a small airport we got the oldest plane. Hardly any overhead space and absolutely zero internet. Its NFL Sunday man! That hurt.

There were no vegan options for first class. Even though we were promised the satellite internet for free, we received NO wifi at all. Even though we were promised a 20-min early arrival, we ended up over 30 mins late.

Flight attendant incredibly rude. Stuck her finger in my drink and didn’t even have the courtesy to apologize.

food /beverage service was limited to one time which was unexpected for a flight that long. food wasn't very good.

It was so nice! I wish that we can have direct flights to El Salvador 😊😊

Fabulous! This was the first time we've flown with JetBlue and the entire experience was flawless!

Horrible. Flight was cancelled, jet blue app not working to rebook, no phone number available to call Jet Blue, 400 ish people in line for the help desk, stuck in Boston for 2 more days had to book new flight with a different airline and still not sure if I will be able to get any refund.

I will NEVER fly with this clown show airline again. Idiots. All of them. Unprepared. Unfriendly. Miserable employees. NEVER. EVER. AGAIN

Easy experience even with the outbound flight being delayed. The seating and space was comfortable and the crew seemed very nice and helpful.

Flight was smooth, amenities (entertainment options and power outlets) were good, sears decent)

Flight team was very courteous only complaint wS the boarding process and mandatory bag check

Disaster This is why I stick to delta You get what you pay for

Well, its a hit or miss when boarding most of the time your employees just let everyone enter immediately In one bum rush. Then out of know where tell the passengers only let A can enter then b then c etc. So make a decision and stick to it. Do it by alphabet and have famn strick compliance. Let the public know. That makes easier on passengers.

The pilots were awesome and got us there early. Great landing too. No complaints on the flight. Service - a young cabin crew woman was terrible as she seemed to hate her job and never smiled. Why do they hire people like that? Terrible. The cabin crew lead woman was wonderful - very professional (and more mature go figure)

My feedback from the trip to Columbia to Chicago was meant for Chicago to Denver.

Everything was delayed and the staff sent me to the wrong gate, causing me to miss one of my flights. I arrived at my destination 6 hours later than I was supposed to.

On the return flight, arriving in Denver we sat on the tarmac in Denver for over 20 minutes.

The flight was fine. It's the satellite terminal that supports American eagle flights is what sucks. There is only one food option and everything there is way overpriced. I mean I know it's airport pricing, but it's even crazier than that. I bought a sandwich in a plastic container for $18.

Don't change gate multiple times make people run across the airport. Announce delays in a timely manner. Have maintenance crew ready. Don't delay and keep passengers on the plane for 3 hrs. on tarmac.

The flight attendant use 1.5 hours to answer my call. My dirty food tray was unattended.

Our bags took a long time to get unloaded once we landed.

Terrible. The flight was delayed two hours due to weather. Then when we got on the plane, the first pilot ended up timing out and we had to wait for a second pilot. Second pile came on board and we tax it out. Had to return back to the gate because of an unruly passenger. Then the copilot timed out. Had to wait for new copilot. Also had to wait for maintenance to check for fuel. Then found out the second pilot timed out and we had to wait for a third pilot. Was ready to go and then needed maintenance again for another issue. In the end, it was 2 o’clock in the morning when they announced that the flight couldn’t go because the third pilot and the second copilot had timed out.

One of the best flights I’ve had. So smooth.

Because I can’t stand very long in one place, I was allowed to reword.

Air was off while waiting on the runway and the temperatures became very uncomfortably hot. Flight attendants were very loud and rude the entire flight.

I booked tickets from San Diego to Cincinnati months in advance to attend my sister’s wedding, a wedding where I was serving as the officiant. At 10:00 PM the night before my 6:00 AM flight (just 8 hours before departure), I received an alert that my first leg to Denver was delayed, causing me to miss my connecting flight to Cincinnati. When I called Frontier customer service, they informed me that they couldn't get me on any other flight that would get me there in time for the Saturday wedding, let alone the rehearsal dinner. Because I had a critical role in the wedding, I was forced to buy a last-minute ticket on another airline for three times the original price, it costing me well over $1,000 extra. Even with the emergency flight, I still missed the rehearsal dinner entirely. When I spoke with Frontier, they agreed to refund my original ticket, but showed zero care or accountability for the massive financial burden and distress they caused. Their "compensation” for causing me to spend an extra $1,000+ and miss an irreplaceable family event? A $75 Frontier voucher. Frontier completely dropped the ball. Their customer service showed zero empathy letting me know that it was Frontier who was the real victim by refunding my ticket price, and their reliability is non-existent. I will never fly Frontier again, and I strongly advise anyone who actually needs to arrive at their destination on time for an important event to book with literally any other airline.

I know Frontier is a “no-frills” airline. I understand the concept. However, I jumped on some tickets for our family vacation, expecting to play a bit of a game to figure out the family bags and not over spend. In the end, I got the short end of this deal by far. 1. I did not expect them to charge the baggage fee for each direction. It makes the fee look high-ish at a glance, but reasonable. Then when you get to checkout and realize you have to pay it twice to come home with your luggage, it becomes ridiculous. 2. The low checked bag weight limit. I am used to packing a 50lb bag with my preferred airline. Frontier’s artificially low 40lb limit more quickly triggers the extra weight fee, which almost DOUBLES the price of the bag if you go over ($79 for the bag/$75 for the next 10 lbs) 3. The fee for a carry-on bag is the same as a checked bag but with a lower size and weight limit. Make it make sense! 4. The seats are terrible. My 2.5 hour flight almost had me losing my mind. I’m 6’3” and my femurs barely fit in the space provided. My knees had to wiggle just right to jam into the crack next to the armrest of the seat in front of me. The cushioning was thin and inadequate. I am tall but I’m not a freak. These seats are unacceptable. 5. I overheard the woman next to me speaking with the gate agent about being charged a $25 fee for not checking in online - she checked in at the airport counter when she arrived. That’s ridiculous. She was old and in a wheelchair. She had a paper boarding pass, and was obviously not tech savvy. She should not be punished for that. 6. They do not have good placement in the terminals. It was always out on the end or down on a subfloor, and we had to walk out on the tarmac almost every time. In Denver. Their home airport! 7. Every time I loaded a new page on the website while buying my tickets or my bags, it was constantly trying to upsell me on some esoteric bundle. Like, a pop-up every time. Very annoying. 8. No screens in the boarding area (at least where we were) to confirm you’re in the right place. Just static gate number signs. I am sure these are standard practices for Frontier, and I should have read more about them before I purchased tickets, but as a result of this single round trip, I do not plan to ever use this cut-rate airline again. I would rather pay the normal amount for a ticket and be treated like a customer instead of a mark.

Great except upon arrival it took them a long time to open the doors

It was awful ....my first time flying on it and I will NEVER fly it again ....everything about it was terrible .....most especially the flight attendants

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!!!

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.

Traveling to a place near Denver?

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