$168+ Cheap flights from Dulles Intl (IAD) to San José (SJO)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SJO
Sep 21 — Sep 281
Round-trip
1 adult, Economy
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Find cheap flights from Dulles Intl to San José with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to San José Juan Santamaria Intl are usually found in October or September, booked 5 days in advance, depart on a Thursday or Tuesday and return on a Tuesday
Cheap flight deals from Dulles Intl to San José
Cheapest
Best
Last-minute
One-way
Cheapest flights from Dulles Intl to San JoséExplore the most affordable flight options available from Dulles Intl to San José. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.
Explore the most affordable flight options available from Dulles Intl to San José. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.
This Faresmojo deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:40 am -
Nonstop6h 50m
Mon 8/314:35 pm -
Nonstop7h 40m
Deal found 8/17![Avianca logo]()
$363
This Avianca deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/273:40 am -
1 stop6h 50m
Tue 9/15:25 pm -
1 stop6h 50m
Deal found 8/18![Avianca logo]()
$364
This Copa Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/84:34 pm -
1 stop20h 24m
Mon 9/145:55 pm -
1 stop8h 25m
Deal found 8/17![Copa Airlines logo]()
$366
This Avianca deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/263:40 am -
1 stop6h 50m
Tue 9/15:25 pm -
1 stop6h 50m
Deal found 8/17![Avianca logo]()
$367
This United Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/278:37 am -
1 stop12h 16m
Sat 10/311:15 pm -
Nonstop4h 44m
Deal found 8/21![United Airlines logo]()
$368
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:25 am -
1 stop7h 54m
Thu 10/810:03 am -
1 stop12h 29m
Deal found 8/18![Copa Airlines logo]()
$371
This Kiwi.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/32:25 am -
1 stop7h 54m
Fri 10/910:03 am -
1 stop12h 29m
Deal found 8/17![Copa Airlines logo]()
$372
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:59 am -
Nonstop5h 01m
Sun 11/87:30 am -
1 stop14h 45m
Deal found 8/18![United Airlines logo]()
$374
This Avianca deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/53:40 am -
1 stop6h 50m
Sun 10/113:10 pm -
1 stop11h 10m
Deal found 8/17![Avianca logo]()
$376
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:00 am -
1 stop8h 22m
Mon 11/92:25 pm -
1 stop9h 12m
Deal found 8/18![United Airlines logo]()
$378
Best flights from Dulles Intl to San JoséDiscover carefully curated flight deals from Dulles Intl to San José that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
Discover carefully curated flight deals from Dulles Intl to San José that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
This Copa Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/11:19 am -
1 stop12h 02m
Tue 2/162:14 pm -
1 stop12h 02m
Deal found 8/21![Copa Airlines logo]()
$366
This Avianca deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/243:40 am -
1 stop6h 50m
Fri 10/25:05 am -
1 stop8h 50m
Deal found 8/20![Avianca logo]()
$388
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2310:25 pm -
1 stop15h 57m
Wed 11/2511:28 pm -
1 stop11h 16m
Deal found 8/18![United Airlines logo]()
$498
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/133:00 pm -
1 stop8h 15m
Sat 12/193:55 pm -
1 stop7h 25m
Deal found 8/19![Delta logo]()
$513
This Copa Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/184:34 pm -
1 stop16h 36m
Fri 9/258:45 am -
1 stop13h 47m
Deal found 8/20![Copa Airlines logo]()
$366
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/1210:05 am -
1 stop23h 27m
Fri 1/228:45 am -
1 stop11h 27m
Deal found 8/17![United Airlines logo]()
$498
This United Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/78:59 am -
Nonstop5h 01m
Sat 11/142:15 pm -
Nonstop4h 44m
Deal found 8/21![United Airlines logo]()
$618
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/138:59 am -
Nonstop5h 01m
Sun 1/241:15 am -
1 stop18h 57m
Deal found 8/17![United Airlines logo]()
$628
This United Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/58:57 am -
Nonstop4h 58m
Sat 12/122:30 pm -
Nonstop4h 43m
Deal found 8/20![United Airlines logo]()
$678
This United Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/168:59 am -
Nonstop5h 01m
Fri 1/229:05 am -
1 stop11h 08m
Deal found 8/20![United Airlines logo]()
$680
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/136:30 am -
1 stop7h 45m
Sat 12/192:15 pm -
Nonstop4h 44m
Deal found 8/18![United Airlines logo]()
$693
Last-minute flights from Dulles Intl to San JoséDiscover last-minute flight deals from Dulles Intl to San José. Data last updated August 22, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to San José. Data last updated August 22, 2026 and is based on user searches.
This Faresmojo deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:40 am -
Nonstop6h 50m
Mon 8/314:35 pm -
Nonstop7h 40m
Deal found 8/17![Avianca logo]()
$363
This Copa Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/252:25 am -
1 stop7h 54m
Thu 8/2710:03 am -
1 stop16h 18m
Deal found 8/18![Copa Airlines logo]()
$386
This Avianca deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/263:40 am -
1 stop6h 50m
Tue 9/15:25 pm -
1 stop6h 50m
Deal found 8/17![Avianca logo]()
$367
This Avianca deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/273:40 am -
1 stop6h 50m
Tue 9/15:25 pm -
1 stop6h 50m
Deal found 8/18![Avianca logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/272:25 am -
1 stop8h 39m
Wed 9/26:17 pm -
1 stop8h 03m
Deal found 8/18![Copa Airlines logo]()
$385
This Kiwi.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/52:25 am -
1 stop7h 54m
Mon 9/145:55 pm -
1 stop8h 25m
Deal found 8/17![Copa Airlines logo]()
$372
This Copa Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/84:34 pm -
1 stop20h 24m
Mon 9/145:55 pm -
1 stop8h 25m
Deal found 8/17![Copa Airlines logo]()
$366
This Copa Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/104:34 pm -
1 stop16h 36m
Sat 12/125:53 pm -
1 stop8h 26m
Deal found 8/18![Copa Airlines logo]()
$387
This American Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:14 am -
2 stops15h 53m
Fri 9/186:00 am -
2 stops25h 55m
Deal found 8/17![American Airlines logo]()
$383
This Avianca deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/293:40 am -
1 stop6h 50m
Tue 10/65:25 pm -
1 stop6h 50m
Deal found 8/19![Avianca logo]()
$384
One-way flights from Dulles Intl to San JoséSearch for one-way flight options from Dulles Intl to San José. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
Search for one-way flight options from Dulles Intl to San José. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
This American Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:27 am -
2 stops11h 26m
Deal found 8/18![American Airlines logo]()
$168
This American Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:35 am -
2 stops11h 46m
Deal found 8/19![American Airlines logo]()
$170
This American Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:30 pm -
2 stops25h 29m
Deal found 8/18![American Airlines logo]()
$173
This Delta deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:00 am -
1 stop8h 05m
Deal found 8/20![Delta logo]()
$178
This American Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/243:08 pm -
1 stop24h 52m
Deal found 8/17![American Airlines logo]()
$182
This American Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:15 pm -
2 stops27h 52m
Deal found 8/17![American Airlines logo]()
$188
This American Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/174:41 pm -
2 stops20h 45m
Deal found 8/17![American Airlines logo]()
$190
This Kissandfly.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/36:40 am -
1 stop18h 19m
Deal found 8/18![Multiple Airlines logo]()
$193
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/910:40 pm -
1 stop14h 58m
Deal found 8/18![United Airlines logo]()
$195
Find flight deals from Dulles Intl to San José
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to San José (SJO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $364 (Avianca) |
One-way from | $168 (American Airlines) |
Popular in | December |
Cheapest in | October |
Average price | $472 |
Good round-trip deal | $591 or less |
Good one-way deal | $467 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles Intl 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, Cheapflights users made 7,457,451 searches. Data last updated August 22, 2026.
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
Cheapest round-trip
Washington, D.C.San José
IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl
IADSJO
Washington, D.C. Dulles Intl
Mon 2/1
1:19 am-12:21 pm
1 stop12h 02m
San José Juan Santamaria Intl
Tue 2/16
2:14 pm-3:16 am
1 stop12h 02m
$366
Washington, D.C.San José
IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl
IADSJO
Washington, D.C. Dulles Intl
Fri 9/18
4:34 pm-7:10 am
1 stop16h 36m
San José Juan Santamaria Intl
Fri 9/25
8:45 am-12:32 am
1 stop13h 47m
$366
Washington, D.C.San José
IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl
IADSJO
Washington, D.C. Dulles Intl
Thu 9/24
3:40 am-8:30 am
1 stop6h 50m
San José Juan Santamaria Intl
Fri 10/2
5:05 am-3:55 pm
1 stop8h 50m
$388
Washington, D.C.San José
IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl
IADSJO
Washington, D.C. Dulles Intl
Mon 11/23
10:25 pm-1:22 pm
1 stop15h 57m
San José Juan Santamaria Intl
Wed 11/25
11:28 pm-11:44 am
1 stop11h 16m
$498
Washington, D.C.San José
IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl
IADSJO
Washington, D.C. Dulles Intl
Tue 1/12
10:05 am-8:32 am
1 stop23h 27m
San José Juan Santamaria Intl
Fri 1/22
8:45 am-9:12 pm
1 stop11h 27m
$498
Washington, D.C.San José
IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl
IADSJO
Washington, D.C. Dulles Intl
Sun 12/13
3:00 pm-10:15 pm
1 stop8h 15m
San José Juan Santamaria Intl
Sat 12/19
3:55 pm-12:20 am
1 stop7h 25m
$513
Washington, D.C.San José
IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl
IADSJO
Washington, D.C. Dulles Intl
Sat 11/7
8:59 am-1:00 pm
Nonstop5h 01m
San José Juan Santamaria Intl
Sat 11/14
2:15 pm-7:59 pm
Nonstop4h 44m
$618
Washington, D.C.San José
IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl
IADSJO
Washington, D.C. Dulles Intl
Wed 1/13
8:59 am-1:00 pm
Nonstop5h 01m
San José Juan Santamaria Intl
Sun 1/24
1:15 am-9:12 pm
1 stop18h 57m
$628
Quickest round-trip
Washington, D.C.San José
IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl
IADSJO
Washington, D.C. Dulles Intl
Sat 12/5
8:57 am-12:55 pm
Nonstop4h 58m
San José Juan Santamaria Intl
Sat 12/12
2:30 pm-8:13 pm
Nonstop4h 43m
$678
Washington, D.C.San José
IAD Washington, D.C. Dulles Intl - SJO San José Juan Santamaria Intl
IADSJO
Washington, D.C. Dulles Intl
Sat 1/16
8:59 am-1:00 pm
Nonstop5h 01m
San José Juan Santamaria Intl
Fri 1/22
9:05 am-9:13 pm
1 stop11h 08m
$680
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Dulles Intl to San José
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to San José in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San José flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-San José flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-San José flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-San José flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-San José flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
IAD-SJO
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to San José
Prices
More
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, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San José (average of $270). Flying from Washington, D.C. Dulles Intl Airport to San José in December is currently the most expensive (average of $484). 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?
Find hourly flight availability from Dulles Intl to San José. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 22, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to San José as you normally would.
What’s the top layover airport for flights from Washington, D.C. Dulles Intl Airport to San José?
Share of 1-stop round-trip flights from Washington, D.C. Dulles Intl Airport to San José chosen by Cheapflights users in the past 12 months, using the same layover each way.
Houston (IAH) – chosen by Cheapflights users on 33% of 1-stop itineraries from Washington, D.C. Dulles Intl Airport to San José on Cheapflights.
What’s the cheapest layover airport for flights from Washington, D.C. Dulles Intl Airport to San José?
Average round-trip fare for 1-stop flights from Washington, D.C. Dulles Intl Airport to San José, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Houston (IAH) is the most affordable 1-stop option, with an average round-trip price of $286.
What’s the fastest layover option from Washington, D.C. Dulles Intl Airport to San José?
Shortest average travel time for 1-stop one-way flights from Washington, D.C. Dulles Intl Airport to San José, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via San Salvador (SAL) have the shortest average one-way travel time for 1-stop routes: 6h 35m.
Which airport typically offers the quickest layover for flights from Washington, D.C. Dulles Intl Airport to San José?
Average layover duration for 1-stop one-way flights from Washington, D.C. Dulles Intl Airport to San José, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via San Salvador (SAL) offer the fastest connection on this route, with an average layover time of 1h 00m.
Reviews of airlines servicing San José
Get insights into the airlines that provide service to San José. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San José. Reviews last updated August 22, 2026.
Read reviews from past customers who have flown Delta,Copa Airlines, andUnited Airlines from Washington, D.C. Dulles Intl Airport to San José. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Food
7.2
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.8
Reviews
1 / 20
10.0
ExcellentSalvador,Aug 2026
PHL - DTW
Entertainment
7.8
Food
7.2
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.8
Reviews
1 / 20
10.0
ExcellentSalvador,Aug 2026
PHL - DTW
Entertainment
7.8
Food
7.2
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.8
Reviews
1 / 20
10.0
ExcellentSalvador,Aug 2026
PHL - DTW
Entertainment
7.8
Food
7.2
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.8
Reviews
1 / 20
10.0
ExcellentSalvador,Aug 2026
PHL - DTW
Entertainment
7.8
Food
7.2
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.8
Reviews
1 / 20
10.0
ExcellentSalvador,Aug 2026
PHL - DTW
Entertainment
7.8
Food
7.2
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.8
Reviews
1 / 20
10.0
ExcellentSalvador,Aug 2026
PHL - DTW
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl to San José. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San José?
Book flights to San José if you plan to visit one of these locationsAlajuela
Jacó
Heredia
Dominical
Manuel Antonio
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Dulles Intl and San José flights
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Top 5 airlines flying from Dulles Intl to San José
Discover the top 5 airlines that operate flights from Dulles Intl to San José. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated August 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$186 | Average$409 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$230 | Average$395 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$239 | Average$395 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$240 | Average$394 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$248 | Average$547 | FlexibilityNo cancel fee | On-time69% |