SJU - IAD

$148 Find Cheap Flights from San Juan to Washington Dulles Airport - Compare and Save

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Everything you should know

Cheapest round-trip
$252
Typical prices: $271-$498
Frontier
Fri 11/23Tue 11/27
SJU - IAD • Non-stop
Cheapest one-way
$148
Typical prices: $177-$380
Frontier
Tue 2/6
SJU - IAD • 1 stop
Nonstop flights
Every day
You can fly direct with United Airlines and Frontier. Average duration is 4h 06m
Direct flights
+1
Direct flights
+1
When to book
17 weeks
in advance
Our data shows that travelers who book at least 17 weeks in advance save around 49% compared to booking last minute.
Insights
Insights
When to travel
February
Cheapest • 51% price drop
January
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Orlando (MCO)
Cheapest • Avg $222 (round-trip)
Newark (EWR)
Shortest trip • 7h 01m (one-way)
Insights
Insights
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We hope you love your trip to Washington, D.C. Dulles Intl Airport!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from San Juan to Dulles Intl (SJU-IAD)

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

Recent round-trip flight deals from San Juan to Dulles Intl

Mon, Nov 16 - Sat, Nov 21
Frontier Logo
3:55 am - 10:21 amSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
7h 26m1 stop Orlando
Frontier Logo
8:22 pm - 10:33 amIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
13h 11m1 stop Miami
$252Frontier
Sat, Dec 19 - Mon, Jan 4
Frontier Logo
8:28 am - 11:31 amSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
4h 03mnonstop
Frontier Logo
12:26 pm - 5:15 pmIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
3h 49mnonstop
$252Frontier
Wed, Nov 18 - Sat, Nov 21
Frontier Logo
3:55 pm - 11:43 pmSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
8h 48m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
8:22 pm - 10:33 amIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
13h 11m1 stop Miami
$252Frontier
Mon, Nov 23 - Sat, Nov 28
Frontier Logo
8:53 am - 12:10 pmSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
4h 17mnonstop
Frontier Logo
1:05 pm - 5:52 pmIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
3h 47mnonstop
$252Frontier
Wed, Dec 23 - Mon, Jan 4
American Airlines Logo
4:31 pm - 10:13 pmSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
6h 42m1 stop Charlotte Douglas
American Airlines Logo
6:01 am - 7:30 pmIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
12h 29m1 stop Miami
$306American Airlines
Thu, Feb 11 - Tue, Feb 16
American Airlines Logo
6:41 pm - 8:46 amSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
15h 05m1 stop Charlotte Douglas
American Airlines Logo
5:54 pm - 6:07 amIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
11h 13m1 stop Dallas/Fort Worth
$306American Airlines
Wed, Feb 10 - Sun, Feb 14
American Airlines Logo
5:50 pm - 8:46 amSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
15h 56m1 stop Charlotte Douglas
American Airlines Logo
12:21 pm - 6:07 amIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
16h 46m1 stop Dallas/Fort Worth
$306American Airlines
Mon, Nov 23 - Mon, Nov 30
United Airlines Logo
5:50 pm - 8:56 pmSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
4h 06mnonstop
United Airlines Logo
8:22 am - 1:15 pmIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
3h 53mnonstop
$351United Airlines
Mon, Nov 23 - Mon, Nov 30
United Airlines Logo
8:05 am - 11:09 amSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
4h 04mnonstop
United Airlines Logo
5:29 pm - 10:22 pmIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
3h 53mnonstop
$351United Airlines
Wed, Dec 23 - Tue, Jan 12
United Airlines Logo
8:05 am - 11:09 amSJU  San Juan Luis Munoz Marin Intl-IAD Washington, D.C. Dulles Intl
4h 04mnonstop
United Airlines Logo
8:22 am - 1:15 pmIAD  Washington, D.C. Dulles Intl-SJU San Juan Luis Munoz Marin Intl
3h 53mnonstop
$353United Airlines
Booking Insights

Price, demand and travel trends for San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

Round-trip flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport typically range from $271 to $498. The lowest price found in the past 5 days was $252, on Frontier.

What's the cheapest day of the week to fly from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

Based on deals KAYAK users found in the last 12 months, Friday is the cheapest day of the week to fly from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport. It’s 13% cheaper than the average day, while Monday is the most expensive, with prices 26% higher.

What’s the cheapest month to fly from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

•February is the cheapest month to fly from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport at $186 round-trip.
•March ($519) and August ($506) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 179% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport the cheapest?

Flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport are cheapest 17 weeks before departure. Booking in this window typically costs about 49% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Expert advice

Expert advice for your flight from San Juan to Dulles Intl

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines, Frontier and IAD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Gabriel Leigh

Gabriel Leigh

Expert on SJU

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more

Key details for San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport flights

Low season

September

Cheapest flight

$148
Beat the crowds with an average 57% drop in travelers.
The most popular month to fly with an average 43% increase in travelers.
One-way flight from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport

When to book flights from San Juan to Dulles Intl

Are your dates flexible? Find out the best times to travel from San Juan to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

    These are the earliest and latest flight times available from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport:

    • Earliest: departs at 8:05 am and lands at 12:11 pm
    • Latest: departs at 5:50 pm and lands at 9:56 pm.

    The flight takes about 4h 06m.

  • What cabin classes can I book on flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

    Two cabin classes are available on flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport:

    • Economy Class
    • First Class

  • How long is a flight from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

    A nonstop flight from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport takes 4h 06m, covering 1,573 miles.

  • Do I need a passport to fly from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport flight?

    Round-trip flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport range from $271 to $498, with an average of $383 over the past 12 months. Anything below $271 counts as a good deal.

  • How expensive are last-minute San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport flights?

    Last-minute fares on this route (booked within two weeks of departure) run 24% above the $383 route average. Book 17 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $222 round-trip via Orlando (MCO), compared to $392 for nonstop.

  • What is the standard checked-bag allowance on flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

    The Boeing 737 MAX 9 family is used most often on this route, operated mainly by United Airlines. Other aircraft seen on the route include Airbus A321neo variants.

  • How are flight departures from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport spread across the day?

    Morning is the busiest departure period on San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport flights, with 50% of flights leaving in that window. Evening departures account for 50%, afternoon flights for 0%, and night flights for 0%.

  • How are flight prices from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport looking right now?

    One-way fares from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport are currently lower than usual. Average one-way flight prices are about $157, which is 39% below the typical average for this route.

  • What car rental options are available at Washington, D.C. Dulles Intl Airport (IAD)?

    Washington, D.C. Dulles Intl Airport (IAD) hosts 5 major car rental companies, with daily rates averaging $70 for economy cars. Top options include:

    • Dollar
    • Hertz
    • Budget
    • Sixt
    • Thrifty

  • Which airports can I use when flying from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

    Flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport usually depart from San Juan Luis Munoz Marin Intl (SJU) and arrive at Washington, D.C. Dulles Intl (IAD).

  • Which airports do connecting flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport pass through?

    One-stop flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport most commonly connect through:

    • Charlotte Douglas (CLT) - 41% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 31% of one-stop connections
    • Newark (EWR) - 17% of one-stop connections
    • Orlando (MCO) - 10% of one-stop connections

  • Can I save money by using flexible dates for flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

    Yes. Flexible dates can save you up to 31% on flights from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport. Friday is the cheapest departure day at $335 round-trip on average, while Monday is the most expensive at $483, a difference of $148.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

    2 airlines operate flights between San Juan Luis Munoz Marin Intl Airport and Washington, D.C. Dulles Intl Airport. The airlines offering nonstop flights on this route include:

    • United Airlines
    • Frontier

  • How much time can I save by choosing a different layover airport from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport?

    Flying via Newark (EWR) gives the shortest average 1-stop total travel time at 7h 01m, compared with 7h 08m via Atlanta Hartsfield-Jackson (ATL) and 7h 15m via Charlotte Douglas (CLT).

  • What is the time difference between San Juan Luis Munoz Marin Intl Airport and Washington, D.C. Dulles Intl Airport?

    Washington, D.C. Dulles Intl Airport is 1 hour behind San Juan Luis Munoz Marin Intl Airport (Eastern Time vs Atlantic Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Washington, D.C. Dulles Intl Airport?

    Some of the most popular sights in Washington, D.C. Dulles Intl Airport are Walter E. Washington Convention Center, National Mall and Capital One Arena. These are among the most viewed places in Washington, D.C. Dulles Intl Airport on KAYAK.

  • Which airlines offer extra legroom and free seat selection on San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport flights?

    Among airlines operating San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport flights:

    • United Airlines: offers extra legroom; offers free seat selection
    • Frontier: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • United Airlines: a cabin bag and a checked bag in Economy Class
    • Frontier: a cabin bag in Economy Class class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

Your guide to booking San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Friday departure and avoid flying on Monday. On this route, Friday flights average $335, about $148 less than Monday fares (31% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 17 weeks before you fly. On this route, that window historically saves about 49% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport trip for February. Fares historically average $186 round-trip in that month - typically $333 less than the most expensive month, which is March (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Orlando Airport (MCO) can be cheaper than flying direct. The cheapest layover option averages $222 round-trip on this route - about $170 less than direct flights (based on the last 12 months).

Prefer to fly direct from San Juan to Washington Dulles Airport?

 
Find which airlines fly direct from San Juan Luis Munoz Marin Intl Airport to Washington, D.C. Dulles Intl Airport, which days they fly and book direct flights.

Direct departures

San Juan Luis Munoz Marin Intl to Washington, D.C. Dulles Intl

Monday

Frontier,United Airlines

Frontier,United Airlines

Tuesday

Frontier,United Airlines

Frontier,United Airlines

Wednesday

Frontier,United Airlines

Frontier,United Airlines

Thursday

United Airlines,Frontier

United Airlines,Frontier

Friday

Frontier,United Airlines

Frontier,United Airlines

Saturday

Frontier,United Airlines

Frontier,United Airlines

Sunday

Frontier,United Airlines

Frontier,United Airlines

See more direct flights

Direct returns

Washington, D.C. Dulles Intl to San Juan Luis Munoz Marin Intl

Monday

Frontier,United Airlines

Frontier,United Airlines

Tuesday

Frontier,United Airlines

Frontier,United Airlines

Wednesday

Frontier,United Airlines

Frontier,United Airlines

Thursday

United Airlines,Frontier

United Airlines,Frontier

Friday

Frontier,United Airlines

Frontier,United Airlines

Saturday

Frontier,United Airlines

Frontier,United Airlines

Sunday

Frontier,United Airlines

Frontier,United Airlines

See more direct flights

More options for your flight from San Juan to Dulles Intl

Complete your trip to Dulles Intl with a hotel stay or car rental

Car rentals in Washington, D.C.
Hotels in Washington, D.C.
Vacations in Washington, D.C.