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Cheap flights from Washington, D.C. Dulles Intl Airport to San José from $108

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to San José departing on 3/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to San José

Cheap round-trip flights

Enter your travel dates to find the best prices.
Avianca Logo
11:55 pm - 3:50 am
IAD
-
SJO
4h 55mnonstop
Avianca Logo
5:10 pm - 10:35 pm
SJO
-
IAD
4h 25mnonstop
$238Avianca
Tue, Jan 20 - Tue, Jan 27
American Airlines Logo
5:46 pm - 12:43 pm
IAD
-
SJO
19h 57m2 stops
American Airlines Logo
2:54 pm - 10:58 am
SJO
-
IAD
19h 04m2 stops
$240American Airlines
Wed, Jan 21 - Thu, Jan 29
American Airlines Logo
5:46 pm - 12:43 pm
IAD
-
SJO
19h 57m2 stops
American Airlines Logo
4:02 pm - 12:36 pm
SJO
-
IAD
19h 34m2 stops
$241American Airlines
Wed, Feb 4 - Mon, Feb 9
Multiple Airlines Logo
1:25 am - 1:57 pm
IAD
-
SJO
13h 32m1 stop
Multiple Airlines Logo
4:15 pm - 12:10 am
SJO
-
IAD
6h 55m1 stop
$243Multiple Airlines
Tue, Jan 27 - Thu, Feb 5
Avianca Logo
4:15 pm - 11:40 pm
IAD
-
SJO
8h 25m1 stop
Avianca Logo
4:30 pm - 3:10 am
SJO
-
IAD
9h 40m1 stop
$244Avianca
Fri, Jan 30 - Fri, Feb 6
American Airlines Logo
7:01 am - 11:43 pm
IAD
-
SJO
17h 42m2 stops
American Airlines Logo
1:25 pm - 8:43 am
SJO
-
IAD
18h 18m2 stops
$245American Airlines
Sat, Feb 7 - Sun, Feb 15
American Airlines Logo
11:34 am - 12:45 pm
IAD
-
SJO
26h 11m1 stop
American Airlines Logo
3:04 pm - 1:35 pm
SJO
-
IAD
21h 31m2 stops
$246American Airlines
Wed, Feb 11 - Wed, Feb 18
American Airlines Logo
5:32 pm - 2:53 pm
IAD
-
SJO
22h 21m1 stop
American Airlines Logo
2:59 pm - 1:32 pm
SJO
-
IAD
20h 33m2 stops
$247American Airlines
Mon, Feb 23 - Wed, Mar 11
Multiple Airlines Logo
2:07 pm - 8:19 pm
IAD
-
SJO
8h 12m1 stop
Multiple Airlines Logo
4:20 pm - 1:15 am
SJO
-
IAD
6h 55m1 stop
$248Multiple Airlines
Tue, Mar 31 - Tue, Apr 14
Multiple Airlines Logo
5:37 pm - 1:15 pm
IAD
-
SJO
20h 38m1 stop
Multiple Airlines Logo
4:15 pm - 12:10 am
SJO
-
IAD
6h 55m1 stop
$249Multiple Airlines
Fri, Feb 27 - Mon, Mar 2

Avianca flights from Washington, D.C. Dulles Intl Airport to San José

Our best Avianca deals on Washington, D.C. Dulles Intl Airport to San José flight tickets
Avianca
Jan 20
IAD11:55 pmWashington, D.C. Dulles Intl
4h 55m
SJO3:50 amSan José Juan Santamaria Intl
Jan 27
SJO5:10 pmSan José Juan Santamaria Intl
4h 25m
IAD10:35 pmWashington, D.C. Dulles Intl
$238
Find similar
Avianca
Jan 30
IAD4:15 pmWashington, D.C. Dulles Intl
8h 25m
1 stop
SJO11:40 pmSan José Juan Santamaria Intl
Feb 6
SJO4:30 pmSan José Juan Santamaria Intl
9h 40m
1 stop
IAD3:10 amWashington, D.C. Dulles Intl
$244
Find similar
Avianca
Jan 21
IAD4:30 amWashington, D.C. Dulles Intl
7h 55m
1 stop
SJO11:25 amSan José Juan Santamaria Intl
Jan 27
SJO5:10 pmSan José Juan Santamaria Intl
4h 25m
IAD10:35 pmWashington, D.C. Dulles Intl
$252
Find similar

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

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to San José flight tickets
American Airlines
Jan 21
IAD5:46 pmWashington, D.C. Dulles Intl
21h 08m
2 stops
SJO1:54 pmSan José Juan Santamaria Intl
Feb 5
SJO6:00 amSan José Juan Santamaria Intl
16h 12m
2 stops
IAD11:12 pmWashington, D.C. Dulles Intl
$240
Find similar
American Airlines
Feb 7
IAD7:01 amWashington, D.C. Dulles Intl
17h 42m
2 stops
SJO11:43 pmSan José Juan Santamaria Intl
Feb 15
SJO1:25 pmSan José Juan Santamaria Intl
18h 18m
2 stops
IAD8:43 amWashington, D.C. Dulles Intl
$245
Find similar
American Airlines
Feb 11
IAD11:34 amWashington, D.C. Dulles Intl
26h 11m
1 stop
SJO12:45 pmSan José Juan Santamaria Intl
Feb 18
SJO3:04 pmSan José Juan Santamaria Intl
21h 31m
2 stops
IAD1:35 pmWashington, D.C. Dulles Intl
$246
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to San José 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 December 18, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to San José that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 1/20

11:55 pm-3:50 am

Nonstop4h 55m

San José Juan Santamaria Intl

Tue 1/27

5:10 pm-10:35 pm

Nonstop4h 25m

$238

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Wed 1/21

5:46 pm-12:43 pm

2 stops19h 57m

San José Juan Santamaria Intl

Thu 1/29

2:54 pm-10:58 am

2 stops19h 04m

$240

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Wed 2/4

5:46 pm-12:43 pm

2 stops19h 57m

San José Juan Santamaria Intl

Mon 2/9

4:02 pm-12:36 pm

2 stops19h 34m

$241

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 1/27

1:25 am-1:57 pm

1 stop13h 32m

San José Juan Santamaria Intl

Thu 2/5

4:15 pm-12:10 am

1 stop6h 55m

$243

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Fri 1/30

4:15 pm-11:40 pm

1 stop8h 25m

San José Juan Santamaria Intl

Fri 2/6

4:30 pm-3:10 am

1 stop9h 40m

$244

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Sat 2/7

7:01 am-11:43 pm

2 stops17h 42m

San José Juan Santamaria Intl

Sun 2/15

1:25 pm-8:43 am

2 stops18h 18m

$245

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Wed 2/11

11:34 am-12:45 pm

1 stop26h 11m

San José Juan Santamaria Intl

Wed 2/18

3:04 pm-1:35 pm

2 stops21h 31m

$246

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Mon 2/23

5:32 pm-2:53 pm

1 stop22h 21m

San José Juan Santamaria Intl

Wed 3/11

2:59 pm-1:32 pm

2 stops20h 33m

$247

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Tue 3/31

2:07 pm-8:19 pm

1 stop8h 12m

San José Juan Santamaria Intl

Tue 4/14

4:20 pm-1:15 am

1 stop6h 55m

$248

Washington, D.C.San José

IAD - SJO

IADSJO

Washington, D.C. Dulles Intl

Fri 2/27

5:37 pm-1:15 pm

1 stop20h 38m

San José Juan Santamaria Intl

Mon 3/2

4:15 pm-12:10 am

1 stop6h 55m

$249

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San José from

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

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 San José?

In general, October is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to San José. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $270. If you don’t want to visit San José in October, then you should wait until September to fly from Washington, D.C. Dulles Intl Airport, when ticket prices are also cheap, with an average price of $295.

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

On average, the least expensive day to fly to San José from Washington, D.C. Dulles Intl Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $350. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Washington, D.C. Dulles Intl Airport to San José on a Saturday will generally be more expensive and average around $668. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our data shows that the cheapest Washington, D.C. Dulles Intl Airport to San José flights are usually those with departure times in the evening. Our users have found flights to San José in the evening for as low as $404. Flights in the morning are often more expensive with an average ticket price of $790.

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

Fly from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl for the best Washington, D.C. Dulles Intl - San José Juan Santamaria Intl flight prices

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

You are more likely to see cheaper flights to San José 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 José for around $371 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San José from Washington, D.C. Dulles Intl Airport for as low as $329 on momondo.

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

There are 2 cabin classes available to choose from on Washington, D.C. Dulles Intl to San José Juan Santamaria 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 Washington, D.C. Dulles Intl Airport to San José flights?

You could potentially save up to 1% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to San José flight.

How have Washington, D.C. Dulles Intl Airport to San José flight prices changed over time?

As of December 2025, prices for Washington, D.C. Dulles Intl Airport to San José flights are approximately 42% cheaper when compared to flights at the same time last year.

When to book flights from Washington, D.C. Dulles Intl Airport to San José

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to San José according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to San José (IAD to SJO) 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 José

Best Price Found

$109

Fastest flight time

4h 55m

Direct flights

Mon, Tue, Wed, Fri and Sun

Airports in San José

1 airport
The best one-way flight to San José from Washington, D.C. Dulles Intl Airport in the past 72 hours is $109. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to San José found on momondo in the last 72 hours is $266.
The fastest flight from Washington, D.C. Dulles Intl Airport to San José takes 4h 55m
Direct flights go from Washington, D.C. Dulles Intl Airport to San José on Monday, Tuesday, Wednesday, Friday and Sunday. The only airline offering direct flights is Avianca.
There is 1 airport in San José. From Washington, D.C. Dulles Intl Airport there are direct flights to San José Juan Santamaria Intl (SJO).
Search flight deals

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

    Washington, D.C. Dulles Intl and San José Juan Santamaria Intl are 2045.0 mi apart from one another. In terms of flight time, this usually takes a little over 4h 55m.

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

    Prices for flights from Washington, D.C. Dulles Intl Airport to San José Juan Santamaria Intl Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to San José Juan Santamaria Intl Airport.

  • What documentation or ID do you need to fly to San José Juan Santamaria Intl Airport?

    The required travel and health documents for your San José Juan Santamaria Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San José Juan Santamaria Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to San José?

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

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to San José with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $174Free CancellationRating
7.9
8,007 reviews
Search Delta flights
Volaris El SalvadorPriceFrom $200Free CancellationRating
7.4
26 reviews
Search Volaris El Salvador flights
United AirlinesPriceFrom $235Free CancellationRating
7.4
9,091 reviews
Search United Airlines flights
American AirlinesPriceFrom $237Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
AviancaPriceFrom $243Free CancellationRating
6.6
2,490 reviews
Search Avianca flights
Copa AirlinesPriceFrom $245Free CancellationRating
7.6
1,556 reviews
Search Copa Airlines flights

  • Avianca Flights From Washington, D.C. Dulles Intl Airport to San José

    The lowest priced Avianca flight from Washington, D.C. Dulles Intl Airport to San José from the last 72 hours was $243. Generally, Avianca has 5 flights on this route every week with an average price of $381. Avianca is rated 6.6/10 by our users.

Traveling to a place near San José?

Book flights to San José if you plan to visit one of these locations
Manuel Antonio
Jacó
Monteverde
Alajuela
Heredia
Dominical
Santa Elena
Esterillos Este

Why use momondo?

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

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 José for you.

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

Yes. All flights to San José from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

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 José.

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

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

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