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Cheap flights from Washington, D.C. Dulles Intl Airport to San José from £127

IAD — SJO
27 Oct — 3 Nov1
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

Sat 31/1008:59 -
Nonstop5h 01m
Tue 3/1123:28 -
1 stop11h 16m
Deal found 24/9£282
Sun 29/1106:00 -
1 stop17h 15m
Fri 4/1207:00 -
1 stop16h 41m
Deal found 23/9£285
Thu 8/1002:25 -
1 stop8h 39m
Sat 17/1018:05 -
1 stop8h 15m
Deal found 25/9£287
Sat 31/1008:59 -
Nonstop5h 01m
Sat 7/1114:15 -
Nonstop4h 44m
Deal found 22/9£290
Thu 8/1016:34 -
1 stop17h 45m
Sun 11/1018:05 -
1 stop8h 15m
Deal found 25/9£291
Sat 31/1008:59 -
Nonstop5h 01m
Thu 5/1112:35 -
1 stop11h 02m
Deal found 22/9£297
Mon 28/906:15 -
1 stop8h 06m
Thu 1/1007:55 -
1 stop14h 35m
Deal found 25/9£300
Tue 29/908:30 -
1 stop13h 07m
Thu 1/1007:55 -
1 stop14h 35m
Deal found 25/9£301
Thu 8/1002:25 -
1 stop10h 33m
Mon 12/1014:48 -
1 stop11h 32m
Deal found 25/9£302
Sat 26/909:35 -
1 stop10h 49m
Sun 27/918:17 -
1 stop8h 03m
Deal found 25/9£306
Sun 27/909:35 -
1 stop25h 29m
Tue 6/1011:58 -
1 stop10h 34m
Deal found 24/9£315
Mon 28/916:34 -
1 stop20h 24m
Wed 21/1008:45 -
1 stop13h 47m
Deal found 25/9£316

Find flight deals from Dulles Intl to San José

Round-trip from

£282

One-way from

£127

Popular in

December

Cheapest in

January

Average price

£288
United Airlines
  • United Airlines
  • 31/10-3/11
  • 1 total stop
  • 16h 17m total
  • Washington, D.C. to San José
Search Deals
United Airlines
  • United Airlines
  • 24/10-31/12
  • 1 total stop
  • 16h 04m total
  • Washington, D.C. to San José
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£9 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

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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Route

Depart

Return

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

Wed 28/10

06:00-19:39

1 stop15h 39m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£127

Washington, D.C.San José

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

IADSJO

Washington, D.C. Dulles Intl

Tue 27/10

06:00-12:22

1 stop8h 22m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£176

Washington, D.C.San José

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

IADSJO

Washington, D.C. Dulles Intl

Thu 29/10

17:38-07:32

1 stop15h 54m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£176

Washington, D.C.San José

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

IADSJO

Washington, D.C. Dulles Intl

Wed 21/10

22:10-07:15

1 stop35h 05m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£188

Washington, D.C.San José

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

IADSJO

Washington, D.C. Dulles Intl

Wed 11/11

14:38-11:25

1 stop21h 47m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£188

Washington, D.C.San José

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

IADSJO

Washington, D.C. Dulles Intl

Sat 16/1

22:45-12:15

1 stop14h 30m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£191
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

Thu 31/12

08:59-13:00

Nonstop5h 01m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£219

Washington, D.C.San José

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

IADSJO

Washington, D.C. Dulles Intl

Thu 19/11

06:10-19:53

1 stop14h 43m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£221

Washington, D.C.San José

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

IADSJO

Washington, D.C. Dulles Intl

Fri 2/10

06:15-12:21

1 stop8h 06m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£232

Washington, D.C.San José

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

IADSJO

Washington, D.C. Dulles Intl

Fri 27/11

06:00-22:15

1 stop17h 15m

San José Juan Santamaria Intl

Wed 31/12

00:00-01:00

Nonstop0h 00m

£236

Flights are sorted by cheapest return flights first.

Deals found on 22/9

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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San José (average of £272). Flying from Washington, D.C. Dulles Intl Airport to San José in December is currently the most expensive (average of £427). 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 £211 and £294 in October.
The cheapest return price found within the last 5 days was £282 on United Airlines (31 Oct–3 Nov).

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 7h 54m. Copa Airlines provides one of the quickest options available for as low as £291. The distance between Washington, D.C. Dulles Intl Airport and San José is about 2042 mi. This flight may include one or multiple stops.

  • 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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San José (average of £272). Flying from Washington, D.C. Dulles Intl Airport to San José in December is currently the most expensive (average of £427). 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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