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Cheap flights from Washington, D.C. Dulles Intl Airport to San José from £126

IAD — SJO
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dulles Intl to San José

Enter your travel dates to find the best prices.

Cheapest flights from Dulles Intl to San José

Tue 24/1115:37 -
1 stop16h 25m
Tue 1/1218:08 -
1 stop8h 11m
Deal found 14/11£291
Sat 14/1118:35 -
1 stop15h 15m
Thu 19/1116:15 -
1 stop7h 50m
Deal found 14/11£293
Thu 12/1101:16 -
1 stop8h 51m
Sun 15/1118:10 -
1 stop18h 48m
Deal found 11/11£296
Sat 28/1108:59 -
Nonstop5h 01m
Mon 7/1208:45 -
1 stop12h 57m
Deal found 10/11£302
Sat 28/1108:59 -
Nonstop5h 01m
Sat 5/1214:15 -
Nonstop4h 44m
Deal found 14/11£316
Thu 10/1215:30 -
1 stop18h 34m
Thu 17/1208:05 -
1 stop17h 49m
Deal found 11/11£337
Sat 14/1115:37 -
1 stop16h 25m
Fri 20/1112:04 -
1 stop14h 11m
Deal found 13/11£340
Sat 5/1218:00 -
1 stop13h 25m
Sat 12/1214:15 -
Nonstop4h 44m
Deal found 10/11£348
Mon 23/1106:00 -
1 stop8h 12m
Wed 25/1107:00 -
1 stop16h 41m
Deal found 11/11£349

Find flight deals from Dulles Intl to San José

Round-trip from

£291

One-way from

£126

Popular in

December

Cheapest in

April

Average price

£349
Copa Airlines
  • Copa Airlines
  • 24/11-1/12
  • 2 total stops
  • 24h 36m total
  • Washington, D.C. to San José
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United Airlines
  • United Airlines
  • 23/11-31/12
  • 1 total stop
  • 15h 39m total
  • Washington, D.C. to San José
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£34 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2026
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Cheapflights Fare Finder

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

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Price

Cheapest return flight

Washington, D.C.San José

IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl

IADSJO

Washington, D.C. Dulles Intl

Mon 23/11

06:00-20:39

1 stop15h 39m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£131
Fastest return journey

Washington, D.C.San José

IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl

IADSJO

Washington, D.C. Dulles Intl

Sat 6/2

08:59-13:00

Nonstop5h 01m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£168

Washington, D.C.San José

IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl

IADSJO

Washington, D.C. Dulles Intl

Fri 5/2

08:59-13:00

Nonstop5h 01m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£168

Washington, D.C.San José

IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl

IADSJO

Washington, D.C. Dulles Intl

Mon 5/4

22:22-12:21

2 stops15h 59m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£172

Washington, D.C.San José

IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl

IADSJO

Washington, D.C. Dulles Intl

Fri 4/12

09:29-08:32

1 stop24h 03m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£172

Washington, D.C.San José

IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl

IADSJO

Washington, D.C. Dulles Intl

Sun 31/1

22:28-12:15

1 stop14h 47m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£172

Washington, D.C.San José

IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl

IADSJO

Washington, D.C. Dulles Intl

Thu 26/11

09:25-08:32

1 stop24h 07m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£175

Washington, D.C.San José

IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl

IADSJO

Washington, D.C. Dulles Intl

Sat 13/2

13:04-12:15

1 stop24h 11m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£181

Washington, D.C.San José

IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl

IADSJO

Washington, D.C. Dulles Intl

Wed 2/12

18:41-08:32

1 stop14h 51m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£191

Washington, D.C.San José

IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl

IADSJO

Washington, D.C. Dulles Intl

Fri 5/3

06:30-20:39

1 stop15h 09m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£191

Flights are sorted by cheapest return flights first.

Deals found on 9/11

Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from Dulles Intl to San José

Have a flexible travel schedule? Discover the best time to fly to San José from Dulles Intl with our price prediction graph.
Estimated return price

Cheapflights Insights

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

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

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to San José, you should look to book at least 4 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, May is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San José (average of £288). Flying from Washington, D.C. Dulles Intl Airport to San José in December is currently the most expensive (average of £463). 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 IAD to SJO?

When flying from Washington, D.C. Dulles Intl Airport to San José, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Washington, D.C. Dulles Intl Airport to San José?

Airfare is typical for this route at the moment.

Washington, D.C. Dulles Intl Airport to San José flights typically cost between £291 and £482 in November.
The cheapest return price found within the last 5 days was £291 on Copa Airlines (24 Nov–1 Dec).

Related info for your journey

  • What airport do you fly into for flights to San José from Washington, D.C. Dulles Intl?

    If you book a flight to San José from Washington, D.C. Dulles Intl, you will be flying to Juan Santamaria Intl, which is the city’s only airport. San José Juan Santamaria Intl (SJO) is located 8.8 mi from the center of San José. There are 0 flights from Washington, D.C. Dulles Intl to Juan Santamaria Intl per day from 0 different airlines.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to San José?

    A quick flight from Washington, D.C. Dulles Intl Airport to San José can take about 15h 54m. United Airlines provides one of the quickest options available for as low as £368. The distance between Washington, D.C. Dulles Intl Airport and San José is about 2042 mi.

  • Can I find deals for flights from Dulles Intl to San José that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to San José flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to San José?

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

  • Can I find deals for business class flights from Dulles Intl to San José?

    Yes. Cheapflights offers flight deals from Dulles Intl to San José 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 Washington, D.C. Dulles Intl Airport to San José?

    Currently, May is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San José (average of £288). Flying from Washington, D.C. Dulles Intl Airport to San José in December is currently the most expensive (average of £463). 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

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