Flight tickets from Denver International to San Juan

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Flight deals from Denver International to San Juan

Looking for a cheap last-minute deal or the best return flight from Denver International to San Juan? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Denver International to San Juan

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver International to San Juan flights are currently cheapest in March.

Direct flights from Denver International to San Juan

Alternative Denver International to San Juan routes

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

Denver to San Juan: Flight information

The things to know before you go.
Cheapest flight found₹ 7,299
Cheapest month to flyMarch
Average flight time5 hrs, 41 mins
Most popular airlineUnited
Average flights per week10

Finding cheap flights from Denver International 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 International to San Juan is ₹ 14,622. 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 41 minutes is the average flight time from Denver International to San Juan.
United flies direct from Denver International to San Juan.
As of March 2025, there are 9 flights per week flying from Denver International to San Juan.
The cheapest month to fly from Denver International to San Juan is usually March 2025.
If you're flying from Denver International Airport, 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 ₹ 14,622.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Denver International Airport to San Juan on Wednesday, 26 March 2025.
Yes – the average flight time is 5 hours and 41 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.
Currently, Frontier Airlines and United offer the cheapest flight tickets to San Juan.

Travelling from Denver International Airport (DEN) to San Juan: what you need to know

  • Around 6 hours 19 minutes is how long you can expect to be travelling on a direct flight from Denver International Airport to San Juan.

  • San Juan is 2 hours ahead of Denver, where Denver International Airport is located. San Juan operates on the UTC-4 timezone.

  • The most popular route is from Denver International Airport (DEN) to Luis Munoz Marin International Airport (SJU). You can select from 9 services every week between these two airports. If you want to get on your way as soon as possible, the earliest flight from DEN to SJU is the 09:46 United option. If you prefer to leave later in the day, the final departure is at 09:50 with United.

  • Give yourself enough time to catch your flight from DEN to San Juan. As a general rule, turn up two hours before international departures and an hour ahead for domestic flights.

  • If you're going away during a peak month like July, be at the airport even earlier. It's smart to arrive up to four hours before an international flight and two hours ahead of a domestic departure. Check-in and security lines will be longer during peak periods like Christmas, New Year and spring break.

  • Nonstop flights from Denver International Airport (DEN) to San Juan are available for booking. Luis Munoz Marin International Airport (SJU) will be where your journey ends.

  • Keep an eye out for offers from United. This airline has direct flights from Denver International Airport to San Juan.

  • We make it easy to book a flight from DEN to San Juan with a stopover. To see the options, uncheck 'Direct flights only.' Next, select a flight that has a stop long enough to see the sights of the city of your choice. Popular stopovers include:

    • Southwest Florida International Airport (RSW)

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • Orlando International Airport (MCO)

  • You can visit Puerto Rico for tourism purposes without a visa if you have a passport from United States. But before booking your cheap tickets from Denver International Airport to San Juan, make sure you have the latest information. Visa rules are subject to change, and you may need some travel documents if your trip is for work or other reasons.

  • DEN is about 40 kilometres from central Denver. If you're ride-sharing, driving or catching a cab from the centre, it'll take 34 minutes or so to get there, depending on the traffic. If you're taking public transport, expect the travel time to be approximately 1 hour and 31 minutes.

  • Booking a night at a hotel can take the hassle out of getting to the airport on time. If you're searching for a place to stay before your flight from Denver International Airport to San Juan, check out SpringHill Suites Denver Airport. It's an easy drive from DEN.

How to find the cheapest flights from Denver International Airport (DEN) to San Juan

  • The lowest price we've found for a one-way ticket from Denver International Airport to San Juan is ₹ 7,299. The cheapest price for a return flight is ₹ 14,622. Remember fares may change due to availability at the time of booking.

  • Book 9 months before your departure date. After crunching the numbers on our calendar, this is how far you'll want to book ahead to secure cheap tickets from DEN to San Juan.

  • Organise your trip for May. That's the cheapest month for tickets from Denver International Airport to San Juan. If you're flexible with your dates, use the 'Whole month' tool to see the cheapest price across every month.

  • Set up a Price Alert for flight tickets from DEN to San Juan. You don't need to look every day to find out if prices have fallen. We'll tell you when there's a change in price.

  • Play around with the filters to find your ideal trip. To see the 'Best,' 'Fastest' or 'Cheapest' flights from Denver International Airport to San Juan, use the 'Sort by' tool. You can also filter results by arrival and departure times, airline, and journey duration.

Airports in San Juan

Luis Munoz Marin International Airport (SJU)

Fernando Luis Ribas Dominicci Airport (SIG)

Best time to go to San Juan

  • It's time to plan your trip dates for your flight from Denver International Airport to San Juan. July is the most popular month to visit San Juan. If you want a more relaxed vibe, go in May.

  • Book your flight from Denver International Airport to San Juan for September to experience the city during its warmest month. Expect temperatures to range from 23ºC to 33ºC.

  • Search for cheap flights from DEN to San Juan in February if you like cooler conditions. Temperatures are at their lowest then, ranging between 20ºC and 28ºC on average.

More about San Juan

  • When it comes to searching for somewhere to rest your head, you'll find the best places to stay in San Juan right here. Check out these hotels after you've booked your flight from Denver International Airport to San Juan:

  • There are so many things to do and see in this city it can be tricky to work out where to begin. Castillo San Felipe del Morro, La Garita del morro de san juan bahia and Fortaleza Street are major attractions which should be on every San Juan itinerary.

Complete your San Juan trip with a car rental

  • Finding you a cheap flight from Denver International Airport to San Juan isn't our only cool trick. Check out our car rentals in San Juan and see the sights your way. We search for deals from trusted car rental providers and put them all in one place. You can instantly compare rates and then book with no fees.

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