Cheap Flights from San Juan Luis Munoz Marin to Washington Dulles

Compare San Juan Luis Munoz Marin to Washington Dulles flight deals

Find the cheapest month or even day of the year to fly to Washington Dulles

Book the best Washington Dulles fare with no extra fees

Flight deals from San Juan Luis Munoz Marin to Washington Dulles

Looking for a cheap last-minute deal or the best return flight from San Juan Luis Munoz Marin Airport to Washington Dulles Airport? If you want to travel next month, return fares start from ر.ق.‏ 1,175. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from San Juan Luis Munoz Marin to Washington Dulles

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Juan Luis Munoz Marin to Washington Dulles flights are currently cheapest in June.

Direct flights from San Juan Luis Munoz Marin to Washington Dulles

San Juan to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight foundر.ق.‏ 448
Cheapest month to flyJune
Average flight time4 hrs, 2 mins
Most popular airlineAir Canada
Average flights per week28

Finding cheap flights from San Juan Luis Munoz Marin to Washington Dulles: Frequently asked questions

The best price we found for a return flight from San Juan Luis Munoz Marin to Washington Dulles is ر.ق.‏ 836. 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.
4 hours and 2 minutes is the average flight time from San Juan Luis Munoz Marin to Washington Dulles.
Air Canada and United fly direct from San Juan Luis Munoz Marin to Washington Dulles.
As of May 2026, there are 28 flights per week flying from San Juan Luis Munoz Marin to Washington Dulles.
The cheapest month to fly from San Juan Luis Munoz Marin to Washington Dulles is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Juan Luis Munoz Marin Airport to Washington Dulles Airport on Tuesday, 11 August 2026.
Yes – the average flight time is 4 hours and 2 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 Washington Dulles 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 Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines and United offer the cheapest flight tickets to Washington Dulles.

Flying from Luis Munoz Marin International Airport (SJU) to Washington Dulles International Airport (IAD): what you need to know

  • Around 4 hours is how long you can expect to be in the air on a direct flight from Luis Munoz Marin International Airport to Washington Dulles International Airport.

  • Washington DC's timezone is UTC-4, which is the same as San Juan.

  • You can choose from 11 weekly Luis Munoz Marin International Airport to Washington Dulles International Airport flights. The 07:25 departure with United Airlines is the earliest flight you can take. United Airlines operates the last service of the day at 17:50.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules worth sticking to. Be at the airport with enough time to catch your SJU to IAD flight.

  • During popular months such as July, it's best to get to the airport earlier than usual. Arrive two hours before domestic departures and four hours ahead for international flights whenever you're flying during a peak period in general.

  • United Airlines offers direct flights from Luis Munoz Marin International Airport to Washington Dulles International Airport. Book with this popular carrier, then get ready to see the sights in Washington DC — and maybe even more of United States if your schedule allows.

  • United Airlines is the most frequently booked airline on this route.

  • United Airlines stands out as the most punctual carrier for SJU to IAD flights, with 80.46% of services arriving as scheduled.

  • If you want to split up your journey, simply deselect 'Direct flights only' when searching for your ticket from Luis Munoz Marin International Airport to Washington Dulles International Airport. These are the most popular stopovers between SJU and IAD:

    • Punta Cana International Airport

    • Orlando International Airport

    • Hartsfield-Jackson Atlanta International Airport

How to find the cheapest flights from Luis Munoz Marin International Airport (SJU) to Washington Dulles International Airport (IAD)

  • Right now, ر.ق.‏ 448 is the cheapest price we've seen for a one-way Luis Munoz Marin International Airport to Washington Dulles International Airport flight. The best price for a return ticket is ر.ق.‏ 836. Bear in mind that fares can change due to demand at the time of booking.

  • Book seven months before you travel. After crunching the numbers on our calendar, this is how far you should book ahead to find cheap tickets from SJU to IAD.

  • Organise your trip for June. That's the cheapest month for flights from Luis Munoz Marin International Airport to Washington Dulles International Airport. If you're flexible with your dates, use the 'Whole month' tool to see the cheapest price across each month.

  • Finding cheap flights from SJU to IAD is a breeze with Price Alerts. All you need to do is set up one of these automatic alerts and we'll let you know when a new deal comes up.

  • Secure the right flight for you by using the filters. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Luis Munoz Marin International Airport to Washington Dulles International Airport, use the 'Sort by' function. You can also filter results by airline, arrival and departure times, and number of stops.

Handy information about Luis Munoz Marin International Airport (SJU)

  • When it comes to the on-time performance of Luis Munoz Marin International Airport, 73.65% of flights arrive within the expected timeframe.

  • Luis Munoz Marin International Airport is around 8 kilometres from central San Juan. If you're driving, catching a cab or ride-sharing from the centre, it'll take 10 minutes or so to arrive, depending on the traffic.

  • The trip when using public transport usually takes 55 minutes.

  • Get your break off to a leisurely start by staying near SJU. Whether you've booked an early flight from Luis Munoz Marin International Airport to Washington Dulles International Airport or just don't want to be rushed, these stays are ideal:

Arriving at Washington Dulles International Airport (IAD)

Getting from Washington Dulles International Airport (IAD) to central Washington DC

  • You'll find IAD at 1 Saarinen Circle.

  • From Washington Dulles International Airport, Washington DC is approximately 56 kilometres away. It takes around 50 minutes to drive to the centre.

  • Travelling to the centre by public transport will take you roughly 3 hours 25 minutes.

When to fly to Washington Dulles International Airport (IAD)

  • It's time to pick your dates for your flight from Luis Munoz Marin International Airport to Washington Dulles International Airport. April is the most popular month to head to Washington DC. If you're after a more laid-back vibe, go in January.

  • The warmest month in Washington DC is July, with the temperature ranging between 19ºC and 33ºC. Book your flights from Luis Munoz Marin International Airport to Washington Dulles International Airport in this month if this is the type of weather you like.

  • January sees average temperatures of between -6ºC and 10ºC. Search for cheap tickets from SJU to IAD around that time if you like travelling in cooler conditions.

Explore more of United States

  • New York is just one of the many cities in United States waiting to be discovered once you've seen Washington DC. Around 322 kilometres away to the north-east, top sights here include Statue of Liberty, Central Park and Empire State Building.

  • If you're ready to explore another great destination in United States, head for Philadelphia, about 193 kilometres north-east of Washington DC. Liberty Bell, Independence Hall and Philadelphia Museum of Art are key reasons to visit.

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