$78 Cheap United flights San Juan (SJU) to Washington (IAD)

View $78 flight on Thu, Oct 16, 2025Opens in a new window

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$78 Cheap United flights San Juan (SJU) to Washington (IAD)

Prices were available within the past 7 days and start at $78 for one-way flights and $151 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Oct 16 - Fri, Oct 17
SJU
San Juan
IAD
Washington
$151 Roundtrip, found 2 days ago
$151
Roundtrip
found 2 days ago
Select United flight, departing Thu, Oct 16 from San Juan to Washington, returning Fri, Oct 17, priced at $151 found 2 days ago
United
Thu, Oct 16 - Fri, Oct 17
SJU
San Juan
IAD
Washington
$155 Roundtrip, found 2 days ago
$155
Roundtrip
found 2 days ago
Select United flight, departing Thu, Oct 16 from San Juan to Washington, returning Fri, Oct 17, priced at $155 found 2 days ago
United
Thu, Oct 16 - Mon, Oct 20
SJU
San Juan
IAD
Washington
$156 Roundtrip, just found
$156
Roundtrip
just found
Select United flight, departing Thu, Oct 16 from San Juan to Washington, returning Mon, Oct 20, priced at $156 just found
United
Thu, Oct 16 - Mon, Oct 20
SJU
San Juan
IAD
Washington
$161 Roundtrip, just found
$161
Roundtrip
just found
Select United flight, departing Thu, Oct 16 from San Juan to Washington, returning Mon, Oct 20, priced at $161 just found
United
Thu, Oct 16 - Mon, Oct 20
SJU
San Juan
IAD
Washington
$165 Roundtrip, just found
$165
Roundtrip
just found
Select United flight, departing Thu, Oct 16 from San Juan to Washington, returning Mon, Oct 20, priced at $165 just found
United
Fri, Jul 11 - Sun, Jul 13
SJU
San Juan
IAD
Washington
$171 Roundtrip, found 9 hours ago
$171
Roundtrip
found 9 hours ago
Select United flight, departing Fri, Jul 11 from San Juan to Washington, returning Sun, Jul 13, priced at $171 found 9 hours ago
Flights from San Juan (SJU) to Washington (IAD)
Origin airport
Luis Munoz Marin Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, United
Popular airline
United
Distance
1574 mi
Average flight time
3 hours 58 mins

Frequently asked questions

How much is a United Airlines flight from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD)?
Make use of the "Price (lowest to highest)" filter on Expedia to look for cheap United Airlines round-trip flights from $151 from SJU to IAD. Affordable one-way options from $78 are available as well.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SJU to IAD with United Airlines?
United Airlines flights to Washington are often cheaper in the off-peak months of January and February. Whether you need a round-trip or one-way ticket, you could score a better deal then.
What is the cheapest time to book flights from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD) with United Airlines?
Landing the best United Airlines deals from SJU to IAD is typically all about timing. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. To top it off, you can pocket 17% on average by buying your tickets on a Sunday rather than a Friday, which is often the most expensive day to book.* It's a good idea to start checking out flights about one month before your travel dates.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD)?
United Airlines operates direct flights from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD), with 14 weekly departures. Simply apply the "Nonstop" and "Airline" filters during your search on Expedia to show all direct United Airlines flights to IAD.
How long does it take to fly from SJU to IAD with United Airlines?
From wheels-up to touchdown, a direct United Airlines flight from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD) takes approximately 4h.
Which day of the week has the most United Airlines flights from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD)?
Thursday has the most United Airlines flights from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD). With 2 daily departures, this is the best day to book something that will suit your schedule.
What is the earliest United Airlines flight from SJU to IAD?
The first flight from SJU to IAD with United Airlines departs at 8:10AM UTC-4. You'll touch down at 11:10AM UTC-5. The final United Airlines flight of the day leaves at 5:50PM UTC-4 and arrives at 8:50PM UTC-5. With around 20% fewer cancellations for morning departures, jetting out early is usually the smartest choice.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Washington?
When taking off from Luis Munoz Marin Intl. Airport (SJU) to Washington with United Airlines, you'll most likely arrive at Washington Dulles Intl. Airport (IAD). This is the airline's main hub here. Other nearby airports like Ronald Reagan Washington National Airport (DCA) and Baltimore Washington Intl. Thurgood Marshall Airport (BWI) may offer cheaper tickets, so it's a good idea to explore all options on Expedia.
Why fly with United Airlines from SJU to IAD?
A rewarding loyalty program and the ability to collect points through United Mileage Plus are the start of the reasons to leave from SJU to IAD with United Airlines. Plus, when you sign up to Expedia's free One Key™ program, you can receive OneKeyCash™* alongside any airline loyalty program earnings. It's yours to use wherever your next trip takes you.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does United Airlines fly from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD)?
United Airlines generally uses Boeing 737 MAX 9 planes for flights from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD). Remember that aircraft type can vary depending on operational requirements, so the plane you'll be on might be different on your day of travel.
Can I change or cancel my United Airlines flight from Luis Munoz Marin Intl. Airport (SJU) to Washington Dulles Intl. Airport (IAD)?
Changes are generally free within 24 hours of booking, but your airline may charge a fee after that. For further details about altering your flights, check out your "Trips," select your flight and click on "Manage Booking." If you want the freedom to change your itinerary without additional costs, apply the "Changes included" or "No cancel fee" filter when organizing your next escape.

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