Cheap flights from San José to Washington, D.C. from $170

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San José to Washington, D.C. departing on 7/16. 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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Cheap round-trip flights

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Avianca Logo
5:25 pm - 2:15 am
SJO
-
IAD
6h 50m
1 stop
Avianca Logo
3:40 am - 8:30 am
IAD
-
SJO
6h 50m
1 stop
$286Avianca
Tue, Apr 28 - Sat, May 2
Avianca Logo
5:25 pm - 2:15 am
SJO
-
IAD
6h 50m
1 stop
Avianca Logo
4:10 am - 11:30 am
IAD
-
SJO
9h 20m
1 stop
$288Avianca
Tue, Apr 28 - Mon, May 4
Avianca Logo
3:10 pm - 4:20 am
SJO
-
IAD
11h 10m
1 stop
Avianca Logo
5:35 pm - 11:40 pm
IAD
-
SJO
8h 05m
1 stop
$289Avianca
Sun, May 17 - Sat, May 23
Volaris El Salvador Logo
4:17 pm - 12:37 pm
SJO
-
IAD
18h 20m
1 stop
Volaris El Salvador Logo
2:17 pm - 6:44 am
IAD
-
SJO
18h 27m
1 stop
$291Volaris El Salvador
Fri, Apr 3 - Sat, Apr 11
Copa Airlines Logo
2:21 pm - 4:21 am
SJO
-
IAD
12h 00m
1 stop
Copa Airlines Logo
4:38 pm - 7:12 am
IAD
-
SJO
16h 34m
1 stop
$296Copa Airlines
Sat, May 9 - Sat, May 16
Copa Airlines Logo
8:46 am - 4:22 am
SJO
-
IAD
17h 36m
1 stop
Copa Airlines Logo
2:21 am - 9:06 am
IAD
-
SJO
8h 45m
1 stop
$298Copa Airlines
Wed, Apr 15 - Fri, May 1
Copa Airlines Logo
6:19 pm - 4:22 am
SJO
-
IAD
8h 03m
1 stop
Copa Airlines Logo
4:38 pm - 7:12 am
IAD
-
SJO
16h 34m
1 stop
$300Copa Airlines
Wed, Apr 22 - Tue, May 5
Copa Airlines Logo
8:47 am - 4:21 am
SJO
-
IAD
17h 34m
1 stop
Copa Airlines Logo
6:26 am - 1:51 pm
IAD
-
SJO
9h 25m
1 stop
$301Copa Airlines
Wed, May 20 - Thu, Aug 20
American Airlines Logo
6:30 am - 11:59 pm
SJO
-
IAD
15h 29m
2 stops
American Airlines Logo
6:25 am - 11:30 am
IAD
-
SJO
7h 05m
1 stop
$303American Airlines
Wed, Apr 15 - Sat, May 2
Copa Airlines Logo
10:05 am - 4:21 am
SJO
-
IAD
16h 16m
1 stop
Copa Airlines Logo
6:26 am - 6:24 pm
IAD
-
SJO
13h 58m
1 stop
$304Copa Airlines
Wed, May 20 - Thu, Aug 20

Volaris El Salvador flights from San José to Washington, D.C. Dulles Intl Airport

Our best Volaris El Salvador deals on San José to Washington, D.C. Dulles Intl Airport flight tickets
Volaris El Salvador
Apr 3
SJO4:17 pmSan José Juan Santamaria Intl
18h 20m
1 stop
IAD12:37 pmWashington, D.C. Dulles Intl
Apr 11
IAD2:17 pmWashington, D.C. Dulles Intl
18h 27m
1 stop
SJO6:44 amSan José Juan Santamaria Intl
$291
Volaris El Salvador
Apr 1
SJO2:42 pmSan José Juan Santamaria Intl
19h 55m
1 stop
IAD12:37 pmWashington, D.C. Dulles Intl
Apr 5
IAD2:17 pmWashington, D.C. Dulles Intl
18h 27m
1 stop
SJO6:44 amSan José Juan Santamaria Intl
$364
Volaris El Salvador
Mar 25
SJO2:50 pmSan José Juan Santamaria Intl
7h 55m
1 stop
IAD12:45 amWashington, D.C. Dulles Intl
Apr 2
IAD2:17 pmWashington, D.C. Dulles Intl
18h 27m
1 stop
SJO6:44 amSan José Juan Santamaria Intl
$372

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

Our best American Airlines deals on San José to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines
Apr 15
SJO6:30 amSan José Juan Santamaria Intl
15h 29m
2 stops
IAD11:59 pmWashington, D.C. Dulles Intl
May 2
IAD6:25 amWashington, D.C. Dulles Intl
7h 05m
1 stop
SJO11:30 amSan José Juan Santamaria Intl
$303
American Airlines
Apr 28
SJO6:30 amSan José Juan Santamaria Intl
24h 19m
2 stops
IAD8:49 amWashington, D.C. Dulles Intl
May 3
IAD8:11 pmWashington, D.C. Dulles Intl
17h 14m
1 stop
SJO11:25 amSan José Juan Santamaria Intl
$319
American Airlines
Mar 31
SJO2:59 pmSan José Juan Santamaria Intl
20h 33m
2 stops
IAD1:32 pmWashington, D.C. Dulles Intl
Jun 3
IAD8:22 pmWashington, D.C. Dulles Intl
18h 46m
2 stops
SJO1:08 pmSan José Juan Santamaria Intl
$322

momondo Fare Finder

 
Customize your flight search to find flights from San José to Washington, D.C. Dulles Intl Airport 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 March 20, 2026.
Use the filters below to find and compare flights from San José to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Tue 4/28

5:25 pm-2:15 am

1 stop6h 50m

Washington, D.C. Dulles Intl

Sat 5/2

3:40 am-8:30 am

1 stop6h 50m

$286

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Tue 4/28

5:25 pm-2:15 am

1 stop6h 50m

Washington, D.C. Dulles Intl

Mon 5/4

4:10 am-11:30 am

1 stop9h 20m

$288

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Sun 5/17

3:10 pm-4:20 am

1 stop11h 10m

Washington, D.C. Dulles Intl

Sat 5/23

5:35 pm-11:40 pm

1 stop8h 05m

$289

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Fri 4/3

4:17 pm-12:37 pm

1 stop18h 20m

Washington, D.C. Dulles Intl

Sat 4/11

2:17 pm-6:44 am

1 stop18h 27m

$291

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Sat 5/9

2:21 pm-4:21 am

1 stop12h 00m

Washington, D.C. Dulles Intl

Sat 5/16

4:38 pm-7:12 am

1 stop16h 34m

$296

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Wed 4/15

8:46 am-4:22 am

1 stop17h 36m

Washington, D.C. Dulles Intl

Fri 5/1

2:21 am-9:06 am

1 stop8h 45m

$298

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Wed 4/22

6:19 pm-4:22 am

1 stop8h 03m

Washington, D.C. Dulles Intl

Tue 5/5

4:38 pm-7:12 am

1 stop16h 34m

$300

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Wed 5/20

8:47 am-4:21 am

1 stop17h 34m

Washington, D.C. Dulles Intl

Thu 8/20

6:26 am-1:51 pm

1 stop9h 25m

$301

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Wed 4/15

6:30 am-11:59 pm

2 stops15h 29m

Washington, D.C. Dulles Intl

Sat 5/2

6:25 am-11:30 am

1 stop7h 05m

$303

San JoséWashington, D.C.

SJO - IAD

SJOIAD

San José Juan Santamaria Intl

Wed 5/20

10:05 am-4:21 am

1 stop16h 16m

Washington, D.C. Dulles Intl

Thu 8/20

6:26 am-6:24 pm

1 stop13h 58m

$304

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 Washington, D.C. from

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

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

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

In general, November is the cheapest month to fly from San José to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $239. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of November, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $253.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Friday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $172. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from San José to Washington, D.C. Dulles Intl Airport for around $612.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from San José in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $291 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $381 on average. Flights to Washington, D.C. Dulles Intl Airport from San José at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from San José when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $310 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from San José for as low as $265 on momondo.

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

There are 3 cabin classes available to choose from on San José Juan Santamaria Intl to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of March 2026, prices for San José to Washington, D.C. Dulles Intl Airport flights are approximately 20% cheaper when compared to flights at the same time last year.

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

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

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

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

Fastest flight time

4h 41m

Direct flights

Mon, Tue, Wed, Fri and Sun
The fastest flight from San José to Washington, D.C. Dulles Intl Airport takes 4h 41m
Direct flights go from San José to Washington, D.C. Dulles Intl Airport on Monday, Tuesday, Wednesday, Friday and Sunday. There are no airlines offering direct flights.
  • How far is San José Juan Santamaria Intl to Washington, D.C. Dulles Intl by plane?

    The straight-line distance from San José Juan Santamaria Intl to Washington, D.C. Dulles Intl is 2045.0 mi. 4h 41m is a normal flight duration for this route.

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

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

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

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

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

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

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

Compare and see reviews for airlines that fly from San José to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
AviancaPriceFrom $201Free CancellationRating
6.5
2,503 reviews
Search Avianca flights
United AirlinesPriceFrom $216Free CancellationRating
7.4
9,454 reviews
Search United Airlines flights
American AirlinesPriceFrom $225Free CancellationRating
7.1
11,483 reviews
Search American Airlines flights
Copa AirlinesPriceFrom $277Free CancellationRating
7.5
1,573 reviews
Search Copa Airlines flights
  • Avianca Flights From San José to Washington, D.C. Dulles Intl Airport

    Avianca operates around 4 flights from San José to Washington, D.C. Dulles Intl Airport every week. The average price of these flights found in the last 72 hours has been $340, but momondo users have found Avianca deals from San José to Washington, D.C. Dulles Intl Airport from as low as $201 round-trip. Avianca has been scored 6.5/10 in 2,503 reviews.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Waldorf
Woodbridge
Colonial Beach
Laurel
Towson
Gaithersburg
Silver Spring
Fredericksburg
Rockville
Tysons
Manassas
Springfield
Linthicum Heights
Bethesda
Sterling

Why use momondo?

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

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

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

All flight searches from San José to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for San José to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Washington, D.C. from San José. 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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1 adult
Sun 4/19
Sun 4/26

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