How long is the flight from Puerto Rico to Washington, D.C. Dulles Intl Airport?

Departing from Puerto Rico to Washington, D.C. Dulles Intl Airport will take you 3h 52m. Puerto Rico and Washington, D.C. Dulles Intl Airport are separated by a distance of 1573 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the most popular routes from Puerto Rico to Washington, D.C. Dulles Intl Airport?

While some choose either Aguadilla Borinquen - Washington, D.C. Dulles Intl or Culebra - Washington, D.C. Dulles Intl, San Juan Luis Munoz Marin Intl - Washington, D.C. Dulles Intl is the most popular route from Puerto Rico to Washington, D.C. Dulles Intl Airport.

What are the cheapest flights from Puerto Rico to Washington, D.C. Dulles Intl Airport?

The cheapest flight price from Puerto Rico to Washington, D.C. Dulles Intl Airport is $143. On average you can expect to pay $508. The most popular route, (San Juan Luis Munoz Marin Intl - Washington, D.C. Dulles Intl), can usually be booked for $245.

Can I find deals for flights from Puerto Rico to Dulles Intl that include hotel bookings?

Yes. In addition to deals on Puerto Rico to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Puerto Rico to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Puerto Rico to Dulles Intl.

Can I find deals for business class flights from Puerto Rico to Dulles Intl?

Yes. Cheapflights offers flight deals from Puerto Rico to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$146+ Cheap Flights from Puerto Rico to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Puerto Rico to Dulles Intl

Cheapest

Best

Last-minute

One-way

Cheapest flights from Puerto Rico to Dulles Intl
Explore the most affordable flight options available from Puerto Rico to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 26, 2026.

Tue 10/278:45 am -

2 stops14h 58m

Tue 11/311:16 am -

2 stops12h 43m

Deal found 8/25

$287

Mon 9/213:55 pm -

2 stops25h 23m

Sun 9/277:50 am -

1 stop8h 16m

Deal found 8/22

$288

Thu 8/276:35 am -

1 stop13h 09m

Sun 8/306:09 pm -

1 stop22h 02m

Deal found 8/24

$289

Wed 9/26:35 am -

1 stop13h 09m

Tue 9/86:09 pm -

1 stop21h 08m

Deal found 8/21

$290

Wed 10/76:30 am -

1 stop10h 48m

Wed 10/147:50 am -

2 stops18h 03m

Deal found 8/26

$291

Fri 9/252:57 am -

1 stop7h 20m

Tue 9/299:04 pm -

1 stop18h 15m

Deal found 8/25

$293

Thu 9/36:35 am -

1 stop13h 09m

Thu 9/106:13 pm -

1 stop19h 21m

Deal found 8/23

$294

Tue 9/1510:42 am -

1 stop23h 35m

Sat 9/199:04 pm -

1 stop19h 02m

Deal found 8/23

$295

Tue 9/292:45 pm -

1 stop9h 25m

Tue 10/611:12 am -

1 stop6h 31m

Deal found 8/26

$296

Tue 10/205:11 pm -

1 stop7h 10m

Sun 10/257:50 am -

2 stops16h 18m

Deal found 8/26

$297

Fri 10/97:00 am -

1 stop13h 11m

Fri 10/166:36 pm -

2 stops14h 42m

Deal found 8/25

$298

Thu 9/177:00 am -

1 stop13h 09m

Tue 9/229:04 pm -

1 stop18h 15m

Deal found 8/26

$299

Best flights from Puerto Rico to Dulles Intl
Discover carefully curated flight deals from Puerto Rico to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 26, 2026.

Mon 10/194:55 pm -

Nonstop3h 52m

Wed 10/216:45 am -

1 stop7h 00m

Deal found 8/21

$342

Mon 9/2110:05 am -

1 stop24h 12m

Sat 10/39:33 am -

1 stop23h 45m

Deal found 8/24

$378

Wed 9/25:49 pm -

1 stop6h 45m

Sat 9/52:54 pm -

1 stop7h 35m

Deal found 8/21

$386

Fri 9/43:56 pm -

1 stop8h 48m

Mon 9/79:00 am -

Nonstop3h 54m

Deal found 8/22

$362

Mon 9/2110:05 am -

1 stop24h 12m

Thu 10/111:12 am -

1 stop22h 06m

Deal found 8/24

$378

Sat 9/54:55 pm -

Nonstop3h 52m

Tue 9/86:15 am -

1 stop7h 38m

Deal found 8/25

$362

Wed 11/45:50 pm -

Nonstop4h 06m

Sun 11/85:29 pm -

Nonstop3h 53m

Deal found 8/22

$427

Fri 10/234:55 pm -

Nonstop3h 52m

Mon 10/268:22 am -

Nonstop3h 53m

Deal found 8/22

$427

Thu 9/174:55 pm -

Nonstop3h 52m

Sun 9/209:00 am -

Nonstop3h 54m

Deal found 8/25

$427

Fri 10/94:55 pm -

Nonstop3h 52m

Sun 10/118:40 am -

Nonstop3h 54m

Deal found 8/23

$427

Thu 9/104:55 pm -

Nonstop3h 52m

Mon 9/146:15 am -

1 stop7h 30m

Deal found 8/21

$432

Wed 9/231:00 am -

1 stop6h 19m

Mon 9/288:40 am -

Nonstop3h 54m

Deal found 8/25

$432

Fri 9/251:25 pm -

1 stop9h 34m

Sun 9/278:40 am -

Nonstop3h 54m

Deal found 8/25

$432

Sat 10/31:25 pm -

1 stop8h 02m

Sun 10/118:40 am -

Nonstop3h 54m

Deal found 8/24

$432

Wed 9/2312:15 am -

2 stops11h 40m

Sun 9/276:15 am -

2 stops16h 54m

Deal found 8/24

$540

Wed 9/1612:15 am -

2 stops13h 40m

Sat 9/2612:40 pm -

2 stops10h 29m

Deal found 8/23

$540

Sun 1/311:09 am -

1 stop7h 10m

Fri 2/58:15 am -

1 stop14h 42m

Deal found 8/22

$690

Last-minute flights from Puerto Rico to Dulles Intl
Discover last-minute flight deals from Puerto Rico to Dulles Intl. Data last updated August 26, 2026 and is based on user searches.

Wed 8/266:35 am -

1 stop13h 09m

Fri 8/286:09 pm -

1 stop22h 02m

Deal found 8/23

$303

Thu 8/276:35 am -

1 stop13h 09m

Sun 8/306:09 pm -

1 stop22h 02m

Deal found 8/24

$289

Wed 9/26:35 am -

1 stop13h 09m

Tue 9/86:09 pm -

1 stop21h 08m

Deal found 8/21

$290

Wed 9/26:35 am -

1 stop13h 09m

Wed 9/96:13 pm -

1 stop19h 21m

Deal found 8/24

$300

Thu 9/36:35 am -

1 stop13h 09m

Thu 9/106:13 pm -

1 stop19h 21m

Deal found 8/23

$294

Tue 9/1510:42 am -

1 stop23h 35m

Sat 9/199:04 pm -

1 stop19h 02m

Deal found 8/23

$295

Thu 9/177:00 am -

1 stop13h 09m

Tue 9/229:04 pm -

1 stop18h 15m

Deal found 8/26

$299

Mon 9/213:55 pm -

2 stops25h 23m

Sun 9/277:50 am -

1 stop8h 16m

Deal found 8/22

$288

Tue 9/2212:59 am -

2 stops19h 10m

Wed 9/307:50 am -

1 stop7h 29m

Deal found 8/26

$297

Thu 9/243:41 pm -

1 stop7h 10m

Mon 9/287:57 am -

1 stop6h 53m

Deal found 8/24

$304

Fri 9/252:57 am -

1 stop7h 20m

Tue 9/299:04 pm -

1 stop18h 15m

Deal found 8/25

$293

Tue 9/292:45 pm -

1 stop9h 25m

Tue 10/611:12 am -

1 stop6h 31m

Deal found 8/26

$296

One-way flights from Puerto Rico to Dulles Intl
Search for one-way flight options from Puerto Rico to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated August 26, 2026.

Wed 9/98:45 am -

1 stop11h 24m

Deal found 8/24

$146

Sun 10/2512:59 am -

2 stops16h 14m

Deal found 8/26

$147

Tue 10/203:04 am -

2 stops21h 17m

Deal found 8/25

$148

Fri 9/113:55 pm -

1 stop18h 22m

Deal found 8/22

$149

Thu 9/107:00 am -

1 stop13h 09m

Deal found 8/22

$151

Sat 10/33:41 pm -

1 stop17h 01m

Deal found 8/26

$152

Wed 9/27:30 am -

1 stop13h 26m

Deal found 8/26

$153

Fri 9/257:00 am -

2 stops10h 56m

Deal found 8/26

$154

Fri 9/187:00 am -

1 stop13h 09m

Deal found 8/22

$155

Fri 9/47:30 am -

1 stop9h 34m

Deal found 8/24

$156

Fri 10/237:00 am -

1 stop13h 11m

Deal found 8/23

$157

Wed 9/23:10 am -

1 stop12h 57m

Deal found 8/25

$174

Find flight deals from Puerto Rico to Dulles Intl

Round-trip from	$287 (Frontier)
One-way from	$146 (Kiwi.com)
Popular in	August
Cheapest in	November
Average price	$384
Good round-trip deal	$506 or less
Good one-way deal	$259 or less

From Puerto Rico to Washington, D.C. Dulles Intl

Search Deals

One-way flight from Puerto Rico to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($41 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Price to beat on a round-trip flight from Puerto Rico to Washington, D.C. Dulles Intl.

Search Deals

Price to beat on a one-way flight from Puerto Rico to Washington, D.C. Dulles Intl.

Search Deals

Cheapflights Fare Finder

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

Cheapest round-trip

San JuanWashington, D.C.

SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl

SJUIAD

San Juan Luis Munoz Marin Intl

Mon 10/19

4:55 pm-8:47 pm

Nonstop3h 52m

Washington, D.C. Dulles Intl

Wed 10/21

6:45 am-1:45 pm

1 stop7h 00m

$342

San JuanWashington, D.C.

SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 9/4

3:56 pm-12:44 am

1 stop8h 48m

Washington, D.C. Dulles Intl

Mon 9/7

9:00 am-12:54 pm

Nonstop3h 54m

$362

San JuanWashington, D.C.

SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl

SJUIAD

San Juan Luis Munoz Marin Intl

Sat 9/5

4:55 pm-8:47 pm

Nonstop3h 52m

Washington, D.C. Dulles Intl

Tue 9/8

6:15 am-1:53 pm

1 stop7h 38m

$362

PonceWashington, D.C.

PSE Ponce Mercedita - IAD Washington, D.C. Dulles Intl

PSEIAD

Ponce Mercedita

Mon 9/21

10:05 am-10:17 am

1 stop24h 12m

Washington, D.C. Dulles Intl

Sat 10/3

9:33 am-9:18 am

1 stop23h 45m

$378

PonceWashington, D.C.

PSE Ponce Mercedita - IAD Washington, D.C. Dulles Intl

PSEIAD

Ponce Mercedita

Mon 9/21

10:05 am-10:17 am

1 stop24h 12m

Washington, D.C. Dulles Intl

Thu 10/1

11:12 am-9:18 am

1 stop22h 06m

$378

San JuanWashington, D.C.

SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl

SJUIAD

San Juan Luis Munoz Marin Intl

Wed 9/2

5:49 pm-12:34 am

1 stop6h 45m

Washington, D.C. Dulles Intl

Sat 9/5

2:54 pm-10:29 pm

1 stop7h 35m

$386

San JuanWashington, D.C.

SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl

SJUIAD

San Juan Luis Munoz Marin Intl

Wed 11/4

5:50 pm-8:56 pm

Nonstop4h 06m

Washington, D.C. Dulles Intl

Sun 11/8

5:29 pm-10:22 pm

Nonstop3h 53m

$427

Quickest round-trip

San JuanWashington, D.C.

SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 10/23

4:55 pm-8:47 pm

Nonstop3h 52m

Washington, D.C. Dulles Intl

Mon 10/26

8:22 am-12:15 pm

Nonstop3h 53m

$427

San JuanWashington, D.C.

SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl

SJUIAD

San Juan Luis Munoz Marin Intl

Thu 9/17

4:55 pm-8:47 pm

Nonstop3h 52m

Washington, D.C. Dulles Intl

Sun 9/20

9:00 am-12:54 pm

Nonstop3h 54m

$427

San JuanWashington, D.C.

SJU San Juan Luis Munoz Marin Intl - IAD Washington, D.C. Dulles Intl

SJUIAD

San Juan Luis Munoz Marin Intl

Fri 10/9

4:55 pm-8:47 pm

Nonstop3h 52m

Washington, D.C. Dulles Intl

Sun 10/11

8:40 am-12:34 pm

Nonstop3h 54m

$427

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/26

Showing 1-10 of 38 resultsSorted by cheapest first

Best time to book a flight from Puerto Rico to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Puerto Rico with our price prediction graph.

SJU-IAD

BQN-IAD

PSE-IAD

CPX-IAD

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Puerto Rico to Washington, D.C. Dulles Intl Airport

PR0-IAD

SJU-IAD

BQN-IAD

PSE-IAD

CPX-IAD

What is the cheapest month to book a flight from Puerto Rico to Washington, D.C. Dulles Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Puerto Rico to Washington, D.C. Dulles Intl Airport (average of $114). Flying from Puerto Rico to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $539). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PR to IAD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Puerto Rico to Washington, D.C. Dulles Intl Airport as you normally would.

Weekly flight availability from Puerto Rico to Washington, D.C. Dulles Intl Airport

The most flights from PR0 to IAD are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

How far ahead should I book a flight from Puerto Rico to Washington, D.C. Dulles Intl Airport?

Booking 9 days in advance of your planned departure date is, on average, the best time to get cheap flights from Puerto Rico to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from Puerto Rico to Washington, D.C. Dulles Intl Airport, such as United Airlines and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

10,121 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

United Airlines

7.4

Good

10,121 reviews

United Airlines

7.4

Good

10,121 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Frontier

5.6

Fair

2,647 reviews

United Airlines

7.4

Good

10,121 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

How long is the flight from Puerto Rico to Washington, D.C. Dulles Intl Airport?
Departing from Puerto Rico to Washington, D.C. Dulles Intl Airport will take you 3h 52m. Puerto Rico and Washington, D.C. Dulles Intl Airport are separated by a distance of 1573 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines to fly from Puerto Rico to Washington, D.C. Dulles Intl Airport one-way?
The cheapest airlines for a one-way flight from Puerto Rico to Washington, D.C. Dulles Intl Airport are Frontier ($59), United Airlines ($145), and Delta ($158).
What are the most popular routes from Puerto Rico to Washington, D.C. Dulles Intl Airport?
While some choose either Aguadilla Borinquen - Washington, D.C. Dulles Intl or Culebra - Washington, D.C. Dulles Intl, San Juan Luis Munoz Marin Intl - Washington, D.C. Dulles Intl is the most popular route from Puerto Rico to Washington, D.C. Dulles Intl Airport.
What are the cheapest flights from Puerto Rico to Washington, D.C. Dulles Intl Airport?
The cheapest flight price from Puerto Rico to Washington, D.C. Dulles Intl Airport is $143. On average you can expect to pay $508. The most popular route, (San Juan Luis Munoz Marin Intl - Washington, D.C. Dulles Intl), can usually be booked for $245.
Can I find deals for flights from Puerto Rico to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Puerto Rico to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Puerto Rico to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Puerto Rico to Dulles Intl.
Can I find deals for business class flights from Puerto Rico to Dulles Intl?
Yes. Cheapflights offers flight deals from Puerto Rico to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Puerto Rico to Washington, D.C. Dulles Intl Airport?
Currently, January is the cheapest month in which you can book a flight from Puerto Rico to Washington, D.C. Dulles Intl Airport (average of $114). Flying from Puerto Rico to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $539). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Alexandria

Owings Mills

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Tysons

Lanham

Reston

Herndon

Rockville

Chantilly

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Fredericksburg

Woodbridge

Falls Church

Sterling

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Laurel

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Oxon Hill

Clinton

Hunt Valley

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

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Dulles Intl flight routes

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Alternative routes for Puerto Rico to Dulles Intl

Luis Munoz Marin Intl to Baltimore flights

Santo Domingo to Dulles Intl flights

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Punta Cana to Baltimore flights

Port of Spain to Baltimore flights

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Kingston to Baltimore flights

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Kingston to Reagan-National flights

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Kingston to Dulles Intl flights

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Bridgetown to Baltimore flights

Aguadilla to Baltimore flights

Bridgetown to Reagan-National flights

Aguadilla to Reagan-National flights

Punta Cana to Reagan-National flights

Santiago de los Caballeros to Reagan-National flights

Top 2 airlines flying from Puerto Rico to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$76	Average$159	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$236	Average$418	FlexibilityNo cancel fee	On-time69%

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$146+ Cheap flights from Puerto Rico to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Puerto Rico to Dulles Intl

Cheapest flights from Puerto Rico to Dulles IntlExplore the most affordable flight options available from Puerto Rico to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 26, 2026.

Explore the most affordable flight options available from Puerto Rico to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 26, 2026.

Best flights from Puerto Rico to Dulles IntlDiscover carefully curated flight deals from Puerto Rico to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 26, 2026.

Discover carefully curated flight deals from Puerto Rico to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 26, 2026.

Last-minute flights from Puerto Rico to Dulles IntlDiscover last-minute flight deals from Puerto Rico to Dulles Intl. Data last updated August 26, 2026 and is based on user searches.

Discover last-minute flight deals from Puerto Rico to Dulles Intl. Data last updated August 26, 2026 and is based on user searches.

One-way flights from Puerto Rico to Dulles IntlSearch for one-way flight options from Puerto Rico to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated August 26, 2026.

Search for one-way flight options from Puerto Rico to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated August 26, 2026.

Find flight deals from Puerto Rico to Dulles Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Puerto Rico to Washington, D.C. Dulles Intl Airport that are best for you.

Best time to book a flight from Puerto Rico to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Puerto Rico with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from Puerto Rico to Washington, D.C. Dulles Intl Airport?

What is the cheapest time of day to fly from PR to IAD?

Find hourly flight availability from Puerto Rico to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 26, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Puerto Rico to Washington, D.C. Dulles Intl Airport as you normally would.

Weekly flight availability from Puerto Rico to Washington, D.C. Dulles Intl Airport

The most flights from PR0 to IAD are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

How far ahead should I book a flight from Puerto Rico to Washington, D.C. Dulles Intl Airport?

Booking 9 days in advance of your planned departure date is, on average, the best time to get cheap flights from Puerto Rico to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from Puerto Rico to Washington, D.C. Dulles Intl Airport, such as United Airlines and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from Puerto Rico to Washington, D.C. Dulles Intl Airport?

What are the cheapest airlines to fly from Puerto Rico to Washington, D.C. Dulles Intl Airport one-way?

What are the most popular routes from Puerto Rico to Washington, D.C. Dulles Intl Airport?

What are the cheapest flights from Puerto Rico to Washington, D.C. Dulles Intl Airport?

Can I find deals for flights from Puerto Rico to Dulles Intl that include hotel bookings?

How can I find direct flights from Puerto Rico to Dulles Intl?

Can I find deals for business class flights from Puerto Rico to Dulles Intl?

What is the cheapest month to book a flight from Puerto Rico to Washington, D.C. Dulles Intl Airport?

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Alternative routes for Puerto Rico to Dulles Intl

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Complete your trip

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Other flights to Dulles Intl

Explore flights to Dulles Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 26, 2026.

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Puerto Rico and Dulles Intl flights

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Cheapest flights from Puerto Rico to Dulles Intl
Explore the most affordable flight options available from Puerto Rico to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 26, 2026.

Best flights from Puerto Rico to Dulles Intl
Discover carefully curated flight deals from Puerto Rico to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 26, 2026.

Last-minute flights from Puerto Rico to Dulles Intl
Discover last-minute flight deals from Puerto Rico to Dulles Intl. Data last updated August 26, 2026 and is based on user searches.

One-way flights from Puerto Rico to Dulles Intl
Search for one-way flight options from Puerto Rico to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated August 26, 2026.