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Cheap Flights from Denver to San Juan

Compare Denver to San Juan flight deals

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Flight deals from Denver to San Juan

Looking for a cheap last-minute deal or the best return flight from Denver to San Juan? If you want to travel next month, return fares start from Rs48,846. Find the lowest prices on one-way and return tickets right here.
San Juan.Rs25,120 per passenger.Departing Sat, 18 Apr.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Sat, 18 Apr, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs25,120, select.
San Juan.Rs26,121 per passenger.Departing Fri, 15 May.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Fri, 15 May, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs26,121, select.
San Juan.Rs37,117 per passenger.Departing Wed, 25 Mar.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Wed, 25 Mar, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs37,117, select.
San Juan.Rs53,128 per passenger.Departing Tue, 16 Jun.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Denver International on Tue, 16 Jun, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs53,128, select.
San Juan.Rs57,221 per passenger.Departing Thu, 24 Sep.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Denver International on Thu, 24 Sep, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs57,221, select.
San Juan.Rs57,221 per passenger.Departing Sun, 4 Oct.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Denver International on Sun, 4 Oct, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs57,221, select.
San Juan.Rs57,330 per passenger.Departing Tue, 14 Jul.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Denver International on Tue, 14 Jul, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs57,330, select.
San Juan.Rs82,798 per passenger.Departing Fri, 27 Nov.One-way flight with Sun Country Airlines.Outbound indirect flight with Sun Country Airlines, departs from Denver International on Fri, 27 Nov, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs82,798, select.
San Juan.Rs97,274 per passenger.Departing Sun, 4 Oct.One-way flight with United.Outbound direct flight with United departs from Denver International on Sun, 4 Oct, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs97,274, select.
San Juan.Rs97,274 per passenger.Departing Thu, 24 Sep.One-way flight with United.Outbound direct flight with United departs from Denver International on Thu, 24 Sep, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs97,274, select.
San Juan.Rs97,283 per passenger.Departing Thu, 18 Jun.One-way flight with United.Outbound direct flight with United departs from Denver International on Thu, 18 Jun, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs97,283, select.
San Juan.Rs97,283 per passenger.Departing Mon, 4 May.One-way flight with United.Outbound direct flight with United departs from Denver International on Mon, 4 May, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs97,283, select.
San Juan.Rs97,451 per passenger.Departing Thu, 16 Apr.One-way flight with United.Outbound direct flight with United departs from Denver International on Thu, 16 Apr, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs97,451, select.
San Juan.Rs97,464 per passenger.Departing Tue, 14 Jul.One-way flight with United.Outbound direct flight with United departs from Denver International on Tue, 14 Jul, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs97,464, select.
San Juan.Rs140,550 per passenger.Departing Sat, 28 Mar.One-way flight with United.Outbound direct flight with United departs from Denver International on Sat, 28 Mar, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs140,550, select.
San Juan.Rs182,003 per passenger.Departing Sun, 20 Dec.One-way flight with United.Outbound indirect flight with United, departs from Denver International on Sun, 20 Dec, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From Rs182,003, select.

Find the cheapest month to fly from Denver to San Juan

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver to San Juan flights are currently cheapest in April.
Mar
from Rs37,117
Apr
from Rs25,120
May
from Rs26,121
Jun
from Rs53,128
Jul
from Rs57,330
Aug
Find prices
Sep
from Rs57,221
Oct
from Rs57,221
Nov
from Rs82,798
Dec
from Rs182,003
Jan
Find prices
Feb
Find prices

Direct flights from Denver to San Juan

Alternative Denver to San Juan routes

Looking for the cheapest, fastest or easiest route from Denver to San Juan? You could fly into the following airports instead.

San Juan Isla Grande

1km from central San Juan
Closest
Search flights

San Juan Luis Munoz Marin

11km from central San Juan
Cheapest
from Rs25,120
Search flights

Roosevelt Roads

55km from central San Juan
Search flights

Ponce

70km from central San Juan
from Rs106,553
Search flights

Vieques

82km from central San Juan
Search flights

Culebra

85km from central San Juan
from Rs76,629
Search flights

Denver to San Juan: Flight information

The things to know before you go.
Cheapest flight foundRs25,120
Cheapest month to flyApril
Average flight time5 hrs, 46 mins
Most popular airlineUnited
Average flights per week8

Check out these San Juan hotels

Ready to plan your stay? Other travellers rate these San Juan hotels for cleanliness, service and location.
352 Guest House Hotel Boutique
0.79 km from city centre
Rs119,772
Per night
Ayana Inn PR
5.71 km from city centre
Rs67,352
Per night
Apt by DW
5.41 km from city centre
Rs156,477
Per night
352 Guest House Hotel Boutique
0.79 km from city centre
Rs119,772
Per night
Ayana Inn PR
5.71 km from city centre
Rs67,352
Per night
Apt by DW
5.41 km from city centre
Rs156,477
Per night
Explore top-rated hotels

Finding cheap flights from Denver to San Juan: Frequently asked questions

There are 6 airports in San Juan: San Juan Isla Grande, San Juan Luis Munoz Marin, Roosevelt Roads, Ponce, Vieques, and Culebra.
The best price we found for a return flight from Denver to San Juan is Rs48,846. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
5 hours and 46 minutes is the average flight time from Denver to San Juan.
United flies direct from Denver to San Juan.
As of March 2026, there are 32 flights per week flying from Denver to San Juan.
The cheapest month to fly from Denver to San Juan is usually April.
If you're flying from Denver, the cheapest airport near San Juan is San Juan Luis Munoz Marin – which is 11.3 km away from the centre of San Juan. We've found flights into this airport from Rs48,846.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Denver to San Juan on Saturday, 11 April 2026.
Yes – the average flight time is 5 hours and 46 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Juan but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Juan is around 40 days in advance, so don’t leave your flight to the last minute.
In March, the average temperature is usually around 25°C. August is typically the warmest month in San Juan, when it usually averages around 29°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging 23°C. The rainiest month is September.
The cheapest airline that flies to San Juan is Frontier Airlines. And the cheapest airline that flies to San Juan Luis Munoz Marin Airport is United.

Flying from Denver to San Juan: what you need to know

  • Denver International Airport (DEN) is Denver's main airport. Explore your options for booking a flight from Denver to San Juan departing from here.

  • Disembark at Luis Munoz Marin International Airport (SJU), the major arrival point in San Juan.

  • Take a direct Denver to San Juan flight and you'll be flying for an average of 5 hours 40 minutes.

  • San Juan's timezone is UTC-4, which makes San Juan two hours ahead of Denver.

  • The busiest route for flights from Denver to San Juan is from Denver International Airport (DEN) to Luis Munoz Marin International Airport (SJU). You can select from six weekly services between these two airports. If you'd like to get going as soon as possible, the earliest flight from DEN to SJU is the 09:40 United Airlines service. If you have other commitments or plans on your day of travel, the final departure is at 09:50 with United Airlines.

  • Give yourself enough time to make your Denver to San Juan flight. A good rule of thumb is to arrive at least two hours before international departures and an hour ahead for domestic flights.

  • You can expect longer queues in popular months like July. Arriving up to four hours in advance for an international flight and two hours for a domestic departure will help ensure a smooth travel experience.

How to find the cheapest flights from Denver to San Juan

  • Rs25,120 is currently the lowest price for a one-way ticket from Denver to San Juan. A return flight starts from Rs48,846. These fares can change depending on availability.

  • Score cheap Denver to San Juan flights by booking two months ahead. According to our research, that's the ideal time frame for finding the biggest deals.

  • May is the best month for picking up an incredible deal on a plane ticket from Denver to San Juan. If you'd like to travel at a different time of year, the 'Whole month' tool will give you the lowest prices across every month.

  • There's no need to search every day to find out if fares have dropped when you create a Price Alert. We'll tell you the moment a better deal is available on cheap flights from Denver to San Juan.

  • Choose your ideal arrival and departure times, number of stops and airlines by using the filters. Alternatively, sort your Denver to San Juan flight results by 'Fastest,' 'Cheapest' or 'Best.'

Flying from Denver

Denver International Airport (DEN)

  • If you're searching for a direct flight from Denver to San Juan, you can depart from Denver International Airport (DEN). Get from DEN to Luis Munoz Marin International Airport (SJU) in one seamless journey.

  • United Airlines is a popular airline that offers direct Denver to San Juan plane tickets from DEN.

  • Consider adding a stopover to potentially save on your Denver to San Juan flight. Simply deselect 'Direct flights only' when browsing departures from Denver International Airport. Take a pause at one of these popular airports:

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • Orlando International Airport (MCO)

    • Southwest Florida International Airport (RSW)

  • The journey from central Denver to DEN takes about 1 hour 30 minutes on public transport. If you ride-share, drive or grab a cab, you'll cover the 31 kilometres in 35 minutes or so, depending on traffic.

  • Searching for a hotel to stay at before your flight from Denver to San Juan? Check out Baymont by Wyndham Denver International Airport. Enjoy a good night's rest here before heading to Denver International Airport.

  • 80.23% of flights leaving Denver International Airport arrive at their destination on schedule. Given its solid on-time performance, you're unlikely to face delays when setting off from DEN.

  • DEN's address is 8500 Pena Boulevard.

Arriving in San Juan

Luis Munoz Marin International Airport (SJU)

  • The distance from Luis Munoz Marin International Airport (SJU) to central San Juan is roughly 11 kilometres. It takes about 10 minutes to reach the centre driving.

  • If you're travelling by public transport, expect a journey time of about 55 minutes.

  • If you have a late flight from Denver to San Juan, nothing beats the convenience of staying close to the terminal. Grab your luggage from the carousel and then be showered and snoozing soon after at one of these accommodation options near SJU:

  • Follow your own route with a Luis Munoz Marin International Airport rental car. Pick up a set of wheels from Sixt, Ace Rent a Car or U-Save and find adventure across San Juan and beyond.

  • Booking your vehicle from Luis Munoz Marin International Airport about two weeks in advance boosts your odds of scoring a great price.

Fernando Luis Ribas Dominicci Airport (SIG)

  • Fernando Luis Ribas Dominicci Airport (SIG) is roughly 6 kilometres from central San Juan. After your flight from Denver to San Juan, it takes approximately 15 minutes to get to the heart of the city in a ride-share or cab.

  • You can expect the journey to take roughly 1 hour on public transport.

Best time to go to San Juan

  • May is the quietest month for flights from Denver to San Juan, while July is the most popular. Choose the ideal time to go to San Juan based on whether you want a laid-back vibe or a lively atmosphere.

  • The warmest month in San Juan is September, with temperatures ranging between 23ºC and 33ºC. Book your Denver to San Juan ticket then if that's your ideal forecast.

  • If you'd rather travel in cooler conditions, search for a cheap flight from Denver to San Juan in February when temperatures average between 20ºC and 28ºC.

More about San Juan

Explore more of Puerto Rico

  • You've done San Juan, now it's time to explore other parts of Puerto Rico. Journey about 10 kilometres west to Bayamon to tick off its leading sights. From Plazoleta Ignacio Zorrilla, La Plaza de la Bomba Puertorriqueña to Monumento a los Trovadores and Parque Palm Court, there's plenty to keep you on the go.

  • If you're interested in discovering another corner of Puerto Rico, consider Carolina, roughly 11 kilometres east of San Juan. Isla Verde Beach, Parque de Doble A Roberto Clemente Walker and Drone Zone Track are highlights.

Plan the rest of your trip from Denver to San Juan

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.