Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Puerto Rico to Washington, D.C. from $105

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Puerto Rico to Washington, D.C. departing on 2/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Puerto Rico to Washington, D.C.

Recent round-trip flight deals from Puerto Rico to Washington, D.C.

Enter your travel dates to find the best prices.
Frontier Logo
4:17 pm - 7:25 pm
SJU
-
IAD
4h 08mnonstop
Frontier Logo
8:20 pm - 1:05 am
IAD
-
SJU
3h 45mnonstop
$105Frontier
Sat, Feb 14 - Mon, Feb 16
Frontier Logo
4:17 pm - 7:25 pm
SJU
-
IAD
4h 08mnonstop
Frontier Logo
8:20 pm - 1:05 am
IAD
-
SJU
3h 45mnonstop
$106Frontier
Fri, Feb 13 - Sat, Feb 14
Frontier Logo
4:17 pm - 7:25 pm
SJU
-
IAD
4h 08mnonstop
Frontier Logo
8:20 pm - 1:05 am
IAD
-
SJU
3h 45mnonstop
$115Frontier
Fri, Feb 13 - Sat, Feb 21
Frontier Logo
4:17 pm - 7:25 pm
SJU
-
IAD
4h 08mnonstop
Frontier Logo
8:20 pm - 1:05 am
IAD
-
SJU
3h 45mnonstop
$116Frontier
Fri, Feb 13 - Mon, Feb 16
Frontier Logo
4:17 pm - 7:25 pm
SJU
-
IAD
4h 08mnonstop
Frontier Logo
8:20 pm - 1:05 am
IAD
-
SJU
3h 45mnonstop
$118Frontier
Fri, Feb 20 - Mon, Feb 23
Frontier Logo
4:17 pm - 7:25 pm
SJU
-
IAD
4h 08mnonstop
Frontier Logo
8:20 pm - 1:05 am
IAD
-
SJU
3h 45mnonstop
$138Frontier
Sat, Feb 14 - Mon, Feb 16
Frontier Logo
5:25 pm - 9:25 am
SJU
-
IAD
17h 00m
1 stop
Frontier Logo
8:20 pm - 1:05 am
IAD
-
SJU
3h 45mnonstop
$145Frontier
Wed, Feb 25 - Sat, Feb 28
Multiple Airlines Logo
3:42 am - 2:18 pm
BQN
-
IAD
11h 36m
2 stops
Multiple Airlines Logo
8:09 am - 1:57 am
IAD
-
BQN
17h 48m
1 stop
$324Multiple Airlines
Thu, Mar 5 - Mon, Mar 16
United Airlines Logo
10:30 am - 9:05 pm
CPX
-
IAD
11h 35m
2 stops
United Airlines Logo
8:27 am - 4:13 pm
IAD
-
CPX
7h 46m
1 stop
$2,446United Airlines
Thu, Mar 5 - Mon, Mar 9
United Airlines Logo
10:30 am - 12:28 am
CPX
-
IAD
38h 58m
3 stops
United Airlines Logo
6:00 am - 4:13 pm
IAD
-
CPX
10h 13m
2 stops
$2,637United Airlines
Thu, Mar 5 - Mon, Mar 9

Frontier flights from Puerto Rico to Washington, D.C. Dulles Intl Airport

Our best Frontier deals on Puerto Rico to Washington, D.C. Dulles Intl Airport flight tickets
Frontier
Feb 13
SJU4:17 pmSan Juan Luis Munoz Marin Intl
4h 08m
IAD7:25 pmWashington, D.C. Dulles Intl
Feb 14
IAD8:20 pmWashington, D.C. Dulles Intl
3h 45m
SJU1:05 amSan Juan Luis Munoz Marin Intl
$104
Frontier
Feb 14
SJU4:17 pmSan Juan Luis Munoz Marin Intl
4h 08m
IAD7:25 pmWashington, D.C. Dulles Intl
Feb 16
IAD8:20 pmWashington, D.C. Dulles Intl
3h 45m
SJU1:05 amSan Juan Luis Munoz Marin Intl
$105
Frontier
Feb 13
SJU4:17 pmSan Juan Luis Munoz Marin Intl
4h 08m
IAD7:25 pmWashington, D.C. Dulles Intl
Feb 14
IAD8:20 pmWashington, D.C. Dulles Intl
3h 45m
SJU1:05 amSan Juan Luis Munoz Marin Intl
$106

United Airlines flights from Puerto Rico to Washington, D.C. Dulles Intl Airport

Our best United Airlines deals on Puerto Rico to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
Feb 6
SJU8:10 amSan Juan Luis Munoz Marin Intl
4h 05m
IAD11:15 amWashington, D.C. Dulles Intl
Feb 8
IAD5:32 pmWashington, D.C. Dulles Intl
3h 50m
SJU10:22 pmSan Juan Luis Munoz Marin Intl
$265
United Airlines
Feb 6
SJU2:15 pmSan Juan Luis Munoz Marin Intl
7h 58m
1 stop
IAD9:13 pmWashington, D.C. Dulles Intl
Feb 8
IAD5:32 pmWashington, D.C. Dulles Intl
3h 50m
SJU10:22 pmSan Juan Luis Munoz Marin Intl
$270
United Airlines
Feb 25
BQN1:09 amAguadilla Borinquen
7h 10m
1 stop
IAD7:19 amWashington, D.C. Dulles Intl
Mar 2
IAD9:00 amWashington, D.C. Dulles Intl
13h 57m
2 stops
BQN11:57 pmAguadilla Borinquen
$432

momondo Fare Finder

 
Customize your flight search to find flights from Puerto Rico to Washington, D.C. Dulles Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from Puerto Rico to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Sat 2/14

4:17 pm-7:25 pm

Nonstop4h 08m

Washington, D.C. Dulles Intl

Mon 2/16

8:20 pm-1:05 am

Nonstop3h 45m

$105

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 2/13

4:17 pm-7:25 pm

Nonstop4h 08m

Washington, D.C. Dulles Intl

Sat 2/14

8:20 pm-1:05 am

Nonstop3h 45m

$106

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 2/13

4:17 pm-7:25 pm

Nonstop4h 08m

Washington, D.C. Dulles Intl

Sat 2/21

8:20 pm-1:05 am

Nonstop3h 45m

$115

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 2/13

4:17 pm-7:25 pm

Nonstop4h 08m

Washington, D.C. Dulles Intl

Mon 2/16

8:20 pm-1:05 am

Nonstop3h 45m

$116

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 2/20

4:17 pm-7:25 pm

Nonstop4h 08m

Washington, D.C. Dulles Intl

Mon 2/23

8:20 pm-1:05 am

Nonstop3h 45m

$118

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Sat 2/14

4:17 pm-7:25 pm

Nonstop4h 08m

Washington, D.C. Dulles Intl

Mon 2/16

8:20 pm-1:05 am

Nonstop3h 45m

$138

San JuanWashington, D.C.

SJU - IAD

SJUIAD

San Juan Luis Munoz Marin Intl

Wed 2/25

5:25 pm-9:25 am

1 stop17h 00m

Washington, D.C. Dulles Intl

Sat 2/28

8:20 pm-1:05 am

Nonstop3h 45m

$145

AguadillaWashington, D.C.

BQN - IAD

BQNIAD

Aguadilla Borinquen

Thu 3/5

3:42 am-2:18 pm

2 stops11h 36m

Washington, D.C. Dulles Intl

Mon 3/16

8:09 am-1:57 am

1 stop17h 48m

$324

CulebraWashington, D.C.

CPX - IAD

CPXIAD

Culebra

Thu 3/5

10:30 am-9:05 pm

2 stops11h 35m

Washington, D.C. Dulles Intl

Mon 3/9

8:27 am-4:13 pm

1 stop7h 46m

$2,446

CulebraWashington, D.C.

CPX - IAD

CPXIAD

Culebra

Thu 3/5

10:30 am-12:28 am

3 stops38h 58m

Washington, D.C. Dulles Intl

Mon 3/9

6:00 am-4:13 pm

2 stops10h 13m

$2,637

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Puerto Rico to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

In general, January is the cheapest month to fly from Puerto Rico to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $145. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $167.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Thursday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $324. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Puerto Rico to Washington, D.C. Dulles Intl Airport for around $664.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Puerto Rico in the morning is the least expensive time of day to depart. momondo users have found prices as low as $445 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $716 on average. Flights to Washington, D.C. Dulles Intl Airport from Puerto Rico at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Puerto Rico to Washington, D.C. Dulles Intl flight route?

Fly from San Juan Luis Munoz Marin Intl to Washington, D.C. Dulles Intl for the best Puerto Rico - Washington, D.C. Dulles Intl flight prices

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Puerto Rico when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $310 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Puerto Rico for as low as $175 on momondo.

What cabin class options are available on Puerto Rico to Washington, D.C. Dulles Intl flights?

There are 4 cabin classes available to choose from on Puerto Rico to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Puerto Rico to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 27% on your flight if you consider stops on a Puerto Rico to Washington, D.C. Dulles Intl Airport flight.

Cheap Puerto Rico to Washington, D.C. Dulles Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Puerto Rico to Washington, D.C. Dulles Intl Airport

Best Price Found

$297

Fastest flight time

3h 59m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from Puerto Rico in the past 72 hours is $297. The best round-trip flight deal from Puerto Rico to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $243.
The fastest flight from Puerto Rico to Washington, D.C. Dulles Intl Airport takes 3h 59m
Direct flights go from Puerto Rico to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

  • When did momondo last update prices for flights from Puerto Rico to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Puerto Rico to Washington, D.C. Dulles Intl Airport are updated daily.

  • How many operators does momondo search for flights from Puerto Rico to Washington, D.C. Dulles Intl Airport?

  • How old do you have to be to fly from Puerto Rico to Washington, D.C. Dulles Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Puerto Rico to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Puerto Rico to Washington, D.C. Dulles Intl Airport?

Best airlines flying from Puerto Rico to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Puerto Rico to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $67Free CancellationRating
5.7
3,051 reviews
Search Frontier flights
United AirlinesPriceFrom $198Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
American AirlinesPriceFrom $242Free CancellationRating
7.2
11,218 reviews
Search American Airlines flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Waldorf
Woodbridge
Tysons
Laurel
Colonial Beach
Silver Spring
Towson
Fredericksburg
Gaithersburg
Rockville
Manassas
Springfield
Sterling
Fairfax
Linthicum Heights

Why use momondo?

Why should I use momondo to find a flight deal from Puerto Rico to Washington, D.C.?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Puerto Rico to Washington, D.C. for you.

Can I find flights from Puerto Rico to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Washington, D.C. from Puerto Rico with this policy.

How can momondo help me find flights from Puerto Rico to Washington, D.C.?

Once you have performed a search for Puerto Rico to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Puerto Rico to Washington, D.C. right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Puerto Rico to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

An easier way to manage your Washington, D.C. Dulles Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 3/5
Thu 3/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Washington, D.C.