Which airline has the best punctuality record on Washington, D.C. to San Juan flights?

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 16% of their flights experiencing any sort of delay.

What day of the week experiences the fewest flight delays on this route?

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

How often are flights from Washington, D.C. to San Juan delayed?

Historically, on average around 19% of flights between Washington, D.C. and San Juan have experienced a delay on any given week. The average delay length over the past 12 months has been 120 minutes.

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to San Juan?

United Airlines is the most popular carrier operating from Washington, D.C. Dulles Intl to San Juan

What airlines fly to San Juan?

United Airlines, Frontier and Delta are the top three most popular airlines that fly to San Juan from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to San Juan. Keep in mind that there are 6 different airlines that fly to San Juan on a routine basis, so you have a few additional options to choose from.

What is the most punctual flight time for Washington, D.C. to San Juan flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to San Juan?

Prices for flights from Washington, D.C. Dulles Intl Airport to San Juan are refreshed on a daily basis.

How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to San Juan?

As of December 2025, there are 6 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to San Juan.

How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to San Juan?

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 Washington, D.C. Dulles Intl Airport to San Juan.

What documentation or ID do you need to fly to San Juan?

The travel and health documents required for your trip to San Juan 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 San Juan. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$98 Cheap Flights from Washington, D.C. Dulles Intl Airport to San Juan in 2025/26

Q: What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and San Juan?

Prices are currently low for flights on this route. Typical prices usually range from $302 to $582. The lowest price recently found on this route was $179.

Q: How many flights depart from Washington, D.C. Dulles Intl Airport to San Juan on average per day?

As of December 2025, 5 flights take off from Washington, D.C. Dulles Intl Airport and land in San Juan each day. The most common flight departure time for this route is 5:00PM, with 55% of daily flights taking off in the afternoon.

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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to San Juan

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:19 pm - 12:13 am

IAD

SJU

3h 54mnonstop

2:57 pm - 6:10 pm

SJU

IAD

4h 13mnonstop

$179Frontier

Thu, Jan 8 - Sat, Jan 10

10:03 am - 5:08 pm

IAD

SJU

6h 05m1 stop

6:55 am - 2:15 pm

SJU

IAD

8h 20m1 stop

$180Frontier

Sat, Jan 10 - Thu, Jan 15

11:37 am - 1:57 am

IAD

SJU

13h 20m1 stop

7:54 pm - 8:22 pm

SJU

IAD

25h 28m1 stop

$181Frontier

Sat, Feb 14 - Sat, Feb 21

7:19 pm - 12:13 am

IAD

SJU

3h 54mnonstop

6:55 am - 2:15 pm

SJU

IAD

8h 20m1 stop

$182Frontier

Fri, Jan 9 - Sun, Jan 18

8:35 am - 11:26 pm

IAD

SJU

13h 51m1 stop

3:11 pm - 6:19 pm

SJU

IAD

4h 08mnonstop

$183Frontier

Sun, Jan 11 - Fri, Jan 16

8:26 pm - 1:20 am

IAD

SJU

3h 54mnonstop

10:47 pm - 11:28 am

SJU

IAD

13h 41m2 stops

$184Frontier

Sun, Jan 4 - Fri, Jan 9

11:37 am - 1:57 am

IAD

SJU

13h 20m1 stop

4:17 pm - 7:25 pm

SJU

IAD

4h 08mnonstop

$185Frontier

Sat, Feb 14 - Mon, Feb 16

8:20 pm - 1:05 am

IAD

SJU

3h 45mnonstop

4:25 pm - 7:20 am

SJU

IAD

15h 55m1 stop

$186Frontier

Sat, Feb 14 - Thu, Feb 19

4:17 pm - 9:02 pm

IAD

SJU

3h 45mnonstop

6:55 am - 2:15 pm

SJU

IAD

8h 20m1 stop

$187Frontier

Sat, Jan 17 - Sun, Jan 18

7:19 pm - 12:13 am

IAD

SJU

3h 54mnonstop

4:35 pm - 11:43 am

SJU

IAD

20h 08m1 stop

$188Frontier

Fri, Jan 9 - Tue, Jan 13

Frontier flights from Washington, D.C. Dulles Intl Airport to San Juan

Our best Frontier deals on Washington, D.C. Dulles Intl Airport to San Juan flight tickets

Frontier

Jan 8

IAD7:19 pmWashington, D.C. Dulles Intl

3h 54m

SJU12:13 amSan Juan Luis Munoz Marin Intl

Jan 10

SJU2:57 pmSan Juan Luis Munoz Marin Intl

4h 13m

IAD6:10 pmWashington, D.C. Dulles Intl

$179

Find similar

Frontier

Jan 8

IAD1:46 pmWashington, D.C. Dulles Intl

6h 51m

1 stop

SJU9:37 pmSan Juan Luis Munoz Marin Intl

Jan 14

SJU7:34 pmSan Juan Luis Munoz Marin Intl

13h 30m

1 stop

IAD8:04 amWashington, D.C. Dulles Intl

$180

Find similar

Frontier

Dec 30

IAD8:15 pmWashington, D.C. Dulles Intl

3h 54m

SJU1:09 amSan Juan Luis Munoz Marin Intl

Jan 7

SJU7:26 pmSan Juan Luis Munoz Marin Intl

18h 35m

1 stop

IAD1:01 pmWashington, D.C. Dulles Intl

$181

Find similar

American Airlines flights from Washington, D.C. Dulles Intl Airport to San Juan

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to San Juan flight tickets

American Airlines

Feb 9

IAD6:00 amWashington, D.C. Dulles Intl

15h 26m

1 stop

SJU10:26 pmSan Juan Luis Munoz Marin Intl

Feb 18

SJU7:30 amSan Juan Luis Munoz Marin Intl

16h 18m

1 stop

IAD10:48 pmWashington, D.C. Dulles Intl

$225

Find similar

American Airlines

Dec 30

IAD6:35 amWashington, D.C. Dulles Intl

6h 19m

1 stop

SJU1:54 pmSan Juan Luis Munoz Marin Intl

Jan 16

SJU8:20 amSan Juan Luis Munoz Marin Intl

9h 56m

1 stop

IAD5:16 pmWashington, D.C. Dulles Intl

$233

Find similar

American Airlines

Dec 30

IAD6:35 amWashington, D.C. Dulles Intl

6h 19m

1 stop

SJU1:54 pmSan Juan Luis Munoz Marin Intl

Jan 9

SJU5:55 pmSan Juan Luis Munoz Marin Intl

6h 17m

1 stop

IAD11:12 pmWashington, D.C. Dulles Intl

$246

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Thu 1/8

7:19 pm-12:13 am

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Sat 1/10

2:57 pm-6:10 pm

Nonstop4h 13m

$179

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 1/10

10:03 am-5:08 pm

1 stop6h 05m

San Juan Luis Munoz Marin Intl

Thu 1/15

6:55 am-2:15 pm

1 stop8h 20m

$180

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 2/14

11:37 am-1:57 am

1 stop13h 20m

San Juan Luis Munoz Marin Intl

Sat 2/21

7:54 pm-8:22 pm

1 stop25h 28m

$181

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Fri 1/9

7:19 pm-12:13 am

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Sun 1/18

6:55 am-2:15 pm

1 stop8h 20m

$182

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 1/11

8:35 am-11:26 pm

1 stop13h 51m

San Juan Luis Munoz Marin Intl

Fri 1/16

3:11 pm-6:19 pm

Nonstop4h 08m

$183

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sun 1/4

8:26 pm-1:20 am

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Fri 1/9

10:47 pm-11:28 am

2 stops13h 41m

$184

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 2/14

11:37 am-1:57 am

1 stop13h 20m

San Juan Luis Munoz Marin Intl

Mon 2/16

4:17 pm-7:25 pm

Nonstop4h 08m

$185

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 2/14

8:20 pm-1:05 am

Nonstop3h 45m

San Juan Luis Munoz Marin Intl

Thu 2/19

4:25 pm-7:20 am

1 stop15h 55m

$186

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Sat 1/17

4:17 pm-9:02 pm

Nonstop3h 45m

San Juan Luis Munoz Marin Intl

Sun 1/18

6:55 am-2:15 pm

1 stop8h 20m

$187

Washington, D.C.San Juan

IAD - SJU

IADSJU

Washington, D.C. Dulles Intl

Fri 1/9

7:19 pm-12:13 am

Nonstop3h 54m

San Juan Luis Munoz Marin Intl

Tue 1/13

4:35 pm-11:43 am

1 stop20h 08m

$188

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Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

Delays

Other information

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and San Juan?

What is the cheapest month to fly to San Juan?

If you’re not able to fly to San Juan in June, then October is your next best option. Flight prices from Washington, D.C. Dulles Intl Airport to San Juan during October average around $310.

What is the cheapest day to depart on your flight to San Juan?

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to San Juan is on a Tuesday when prices can be found for as low as $365. The most expensive day to fly to San Juan is Saturday, with ticket prices averaging around $458.

What is the cheapest time of day to depart on your flight to San Juan?

The cheapest time of day to fly to San Juan is at noon when flights can be purchased for as low as $238. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $427 on average. Flights to San Juan from Washington, D.C. Dulles Intl Airport in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Washington, D.C. Dulles Intl to San Juan flight route?

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

How far in advance should I book a flight to San Juan?

You are more likely to see cheaper flights to San Juan from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around $405 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from Washington, D.C. Dulles Intl Airport for as low as $326 on momondo.

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

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

Cheap Washington, D.C. Dulles Intl Airport to San Juan flight deals and tips

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

Fastest flight time	3h 45m
Direct flights	Every day
Airports in San Juan	2 airports

The fastest flight from Washington, D.C. Dulles Intl Airport to San Juan takes 3h 45m

Direct flights go from Washington, D.C. Dulles Intl Airport to San Juan every day.

There are 2 airports in San Juan. From Washington, D.C. Dulles Intl Airport there are direct flights to San Juan Luis Munoz Marin Intl (SJU).

Search flight deals

How far is Washington, D.C. Dulles Intl to San Juan by plane?
San Juan is 1569.0 mi away from Washington, D.C. Dulles Intl. By plane, this route typically takes 3h 45m.
When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to San Juan?
Prices for flights from Washington, D.C. Dulles Intl Airport to San Juan are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to San Juan?
As of December 2025, there are 6 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to San Juan.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to San Juan?
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 Washington, D.C. Dulles Intl Airport to San Juan.
What documentation or ID do you need to fly to San Juan?
The travel and health documents required for your trip to San Juan 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 San Juan. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Washington, D.C. Dulles Intl Airport to San Juan

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to San Juan with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $104	Free Cancellation	Rating 5.7 3,069 reviews	Search Frontier flights
Delta	PriceFrom $148	Free Cancellation	Rating 7.9 8,012 reviews	Search Delta flights
Spirit Airlines	PriceFrom $151	Free Cancellation	Rating 6.3 8,201 reviews	Search Spirit Airlines flights
JetBlue	PriceFrom $168	Free Cancellation	Rating 7.2 2,898 reviews	Search JetBlue flights
American Airlines	PriceFrom $219	Free Cancellation	Rating 7.2 11,058 reviews	Search American Airlines flights
United Airlines	PriceFrom $267	Free Cancellation	Rating 7.4 9,114 reviews	Search United Airlines flights

Why use momondo?

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

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 Washington, D.C. to San Juan for you.

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

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

How can momondo help me find flights from Washington, D.C. to San Juan?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to San Juan.

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

Yes momondo offers price alerts on flights to San Juan from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to Puerto Rico

Fly into one of these airports located in San Juan

San Juan Isla Grande Airport

San Juan Luis Munoz Marin Intl Airport

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Flights from Washington, D.C. Dulles Intl to Wilmington New Hanover County

Flights from Washington, D.C. Dulles Intl to Asheville Regional

Cheap flights from Washington, D.C. Dulles Intl Airport to San Juan from $104

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Frontier flights from Washington, D.C. Dulles Intl Airport to San Juan

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Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to San Juan flight tickets

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

See travel insights to San Juan from

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

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and San Juan?

What is the cheapest month to fly to San Juan?

If you’re not able to fly to San Juan in June, then October is your next best option. Flight prices from Washington, D.C. Dulles Intl Airport to San Juan during October average around $310.

What is the cheapest day to depart on your flight to San Juan?

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to San Juan is on a Tuesday when prices can be found for as low as $365. The most expensive day to fly to San Juan is Saturday, with ticket prices averaging around $458.

What is the cheapest time of day to depart on your flight to San Juan?

What is the cheapest Washington, D.C. Dulles Intl to San Juan flight route?

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

How far in advance should I book a flight to San Juan?

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

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

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to San Juan?

United Airlines is the most popular carrier operating from Washington, D.C. Dulles Intl to San Juan

What airlines fly to San Juan?

How often are flights from Washington, D.C. to San Juan delayed?

Historically, on average around 19% of flights between Washington, D.C. and San Juan have experienced a delay on any given week. The average delay length over the past 12 months has been 120 minutes.

What is the most punctual flight time for Washington, D.C. to San Juan flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Washington, D.C. to San Juan flights?

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 16% of their flights experiencing any sort of delay.

How many flights depart from Washington, D.C. Dulles Intl Airport to San Juan on average per day?

As of December 2025, 5 flights take off from Washington, D.C. Dulles Intl Airport and land in San Juan each day. The most common flight departure time for this route is 5:00PM, with 55% of daily flights taking off in the afternoon.

How many flights depart from Washington, D.C. Dulles Intl Airport to San Juan on average per week?

As of December 2025, 35 flights take off from Washington, D.C. Dulles Intl Airport and land in San Juan each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

Cheap Washington, D.C. Dulles Intl Airport to San Juan flight deals and tips

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

Fastest flight time

Direct flights

Airports in San Juan

How far is Washington, D.C. Dulles Intl to San Juan by plane?

When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to San Juan?

How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to San Juan?

How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to San Juan?

What documentation or ID do you need to fly to San Juan?

Best airlines flying from Washington, D.C. Dulles Intl Airport to San Juan

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to San Juan with momondo

Why use momondo?

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

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

How can momondo help me find flights from Washington, D.C. to San Juan?

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

An easier way to manage your San Juan 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Puerto Rico

Fly into one of these airports located in San Juan

Airports listed have a maximum distance of 7.1 mi from San Juan