$218+ Cheap flights from San José (SJO) to Dulles Intl (IAD)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — IAD
Nov 23 — Nov 301
Round-trip
1 adult, Economy
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Find cheap flights from San José to Dulles Intl 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 San José Juan Santamaria Intl to Washington, D.C. Dulles Intl are usually found in February or August, booked 45 days in advance, depart on a Tuesday or Thursday and return on a Tuesday
Cheap flight deals from San José to Dulles Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from San José to Dulles IntlExplore the most affordable flight options available from San José to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 24, 2026.
Explore the most affordable flight options available from San José to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 24, 2026.
This Copa Airlines deal was found by Cheapflights users on 10/21. 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.
Tue 11/103:59 am -
1 stop22h 16m
Fri 11/131:16 am -
1 stop8h 03m
Deal found 10/21![Copa Airlines logo]()
$363
This Avianca deal was found by Cheapflights users on 10/21. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:45 pm -
1 stop6h 30m
Thu 11/52:30 am -
1 stop7h 05m
Deal found 10/21![Avianca logo]()
$364
This Avianca deal was found by Cheapflights users on 10/21. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/29:45 am -
1 stop6h 30m
Tue 12/84:25 pm -
1 stop8h 15m
Deal found 10/21![Avianca logo]()
$365
This Avianca deal was found by Cheapflights users on 10/20. 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.
Tue 10/275:10 am -
1 stop8h 45m
Sat 11/74:25 pm -
1 stop8h 15m
Deal found 10/20![Avianca logo]()
$366
This Avianca deal was found by Cheapflights users on 10/23. 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 11/117:45 pm -
1 stop6h 30m
Tue 11/242:30 am -
1 stop12h 25m
Deal found 10/23![Avianca logo]()
$367
This United Airlines deal was found by Cheapflights users on 10/24. 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 12/271:15 am -
1 stop22h 26m
Wed 1/135:53 pm -
1 stop27h 46m
Deal found 10/24![United Airlines logo]()
$370
This United Airlines deal was found by Cheapflights users on 10/24. 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 12/192:15 pm -
Nonstop4h 44m
Wed 12/308:59 am -
Nonstop5h 01m
Deal found 10/24![United Airlines logo]()
$371
This American Airlines deal was found by Cheapflights users on 10/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:20 am -
2 stops16h 10m
Mon 11/167:09 pm -
2 stops20h 40m
Deal found 10/20![American Airlines logo]()
$373
This Avianca deal was found by Cheapflights users on 10/21. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/15:10 am -
1 stop8h 45m
Tue 11/32:30 am -
1 stop7h 05m
Deal found 10/21![Avianca logo]()
$374
This Avianca deal was found by Cheapflights users on 10/22. 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 12/39:45 am -
1 stop6h 30m
Sun 12/63:00 am -
1 stop6h 50m
Deal found 10/22![Avianca logo]()
$375
This Avianca deal was found by Cheapflights users on 10/20. 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.
Sat 10/245:05 am -
1 stop8h 50m
Mon 11/24:25 pm -
1 stop8h 15m
Deal found 10/20![Avianca logo]()
$376
This American Airlines deal was found by Cheapflights users on 10/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/82:46 pm -
1 stop21h 47m
Sun 11/157:09 pm -
2 stops18h 52m
Deal found 10/21![American Airlines logo]()
$379
Best flights from San José to Dulles IntlDiscover carefully curated flight deals from San José to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 24, 2026.
Discover carefully curated flight deals from San José to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 24, 2026.
This United Airlines deal was found by Cheapflights users on 10/24. 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 11/101:55 pm -
1 stop8h 30m
Sat 11/1412:40 pm -
1 stop10h 20m
Deal found 10/24![United Airlines logo]()
$366
This American Airlines deal was found by Cheapflights users on 10/24. 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.
Sun 1/243:56 pm -
2 stops22h 44m
Sat 1/304:13 pm -
2 stops23h 43m
Deal found 10/24![American Airlines logo]()
$426
This United Airlines deal was found by Cheapflights users on 10/22. 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 12/252:15 pm -
Nonstop4h 44m
Thu 12/316:00 am -
1 stop13h 16m
Deal found 10/22![United Airlines logo]()
$382
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Tue 12/222:15 pm -
Nonstop4h 44m
Mon 1/1110:33 pm -
1 stop34h 59m
Deal found 10/20![United Airlines logo]()
$388
This United Airlines deal was found by Cheapflights users on 10/21. 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 12/299:05 am -
1 stop13h 16m
Thu 12/316:00 am -
1 stop15h 39m
Deal found 10/21![United Airlines logo]()
$388
This United Airlines deal was found by Cheapflights users on 10/23. 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 12/261:25 pm -
1 stop10h 13m
Wed 12/308:59 am -
Nonstop5h 01m
Deal found 10/23![United Airlines logo]()
$388
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/198:45 am -
1 stop14h 52m
Tue 11/2412:37 pm -
1 stop8h 16m
Deal found 10/22![United Airlines logo]()
$388
This United Airlines deal was found by Cheapflights users on 10/22. 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 12/1912:35 pm -
1 stop11h 06m
Fri 1/110:54 pm -
1 stop24h 38m
Deal found 10/22![United Airlines logo]()
$388
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Mon 12/2811:28 pm -
1 stop22h 53m
Fri 1/18:59 am -
Nonstop5h 01m
Deal found 10/21![United Airlines logo]()
$388
This United Airlines deal was found by Cheapflights users on 10/20. 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 12/262:15 pm -
Nonstop4h 44m
Fri 1/18:59 am -
Nonstop5h 01m
Deal found 10/20![United Airlines logo]()
$403
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Sun 12/271:25 pm -
1 stop19h 37m
Mon 1/46:00 am -
1 stop17h 32m
Deal found 10/21![United Airlines logo]()
$413
This United Airlines deal was found by Cheapflights users on 10/24. 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 1/242:15 pm -
Nonstop4h 44m
Sat 1/308:59 am -
Nonstop5h 01m
Deal found 10/24![United Airlines logo]()
$413
Last-minute flights from San José to Dulles IntlDiscover last-minute flight deals from San José to Dulles Intl. Data last updated October 24, 2026 and is based on user searches.
Discover last-minute flight deals from San José to Dulles Intl. Data last updated October 24, 2026 and is based on user searches.
This Avianca deal was found by Cheapflights users on 10/21. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:45 pm -
1 stop6h 30m
Mon 11/24:25 pm -
1 stop8h 15m
Deal found 10/21![Avianca logo]()
$375
This Avianca deal was found by Cheapflights users on 10/20. 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.
Tue 10/275:10 am -
1 stop8h 45m
Sat 11/74:25 pm -
1 stop8h 15m
Deal found 10/20![Avianca logo]()
$366
This Avianca deal was found by Cheapflights users on 10/21. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:45 pm -
1 stop6h 30m
Thu 11/52:30 am -
1 stop7h 05m
Deal found 10/21![Avianca logo]()
$364
This Avianca deal was found by Cheapflights users on 10/22. 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.
Sun 11/17:45 pm -
1 stop6h 30m
Thu 11/54:25 pm -
1 stop8h 15m
Deal found 10/22![Avianca logo]()
$365
This Avianca deal was found by Cheapflights users on 10/21. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/15:10 am -
1 stop8h 45m
Tue 11/32:30 am -
1 stop7h 05m
Deal found 10/21![Avianca logo]()
$374
This American Airlines deal was found by Cheapflights users on 10/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:20 am -
2 stops16h 10m
Mon 11/167:09 pm -
2 stops20h 40m
Deal found 10/20![American Airlines logo]()
$373
This American Airlines deal was found by Cheapflights users on 10/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/82:46 pm -
1 stop21h 47m
Sun 11/157:09 pm -
2 stops18h 52m
Deal found 10/21![American Airlines logo]()
$379
This Copa Airlines deal was found by Cheapflights users on 10/21. 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.
Tue 11/103:59 am -
1 stop22h 16m
Fri 11/131:16 am -
1 stop8h 03m
Deal found 10/21![Copa Airlines logo]()
$363
This Avianca deal was found by Cheapflights users on 10/23. 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 11/117:45 pm -
1 stop6h 30m
Tue 11/242:30 am -
1 stop12h 25m
Deal found 10/23![Avianca logo]()
$367
This United Airlines deal was found by Cheapflights users on 10/21. 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 11/212:15 pm -
Nonstop4h 44m
Sat 11/288:59 am -
Nonstop5h 01m
Deal found 10/21![United Airlines logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 11/262:18 pm -
1 stop8h 15m
Thu 12/31:18 am -
1 stop8h 00m
Deal found 10/24![Copa Airlines logo]()
$370
One-way flights from San José to Dulles IntlSearch for one-way flight options from San José to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 24, 2026.
Search for one-way flight options from San José to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 24, 2026.
This BusinessClass deal was found by Cheapflights users on 10/20. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:54 pm -
2 stops16h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![GOL logo]()
$218
This United Airlines deal was found by Cheapflights users on 10/23. 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 12/2811:28 pm -
1 stop22h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![United Airlines logo]()
$224
This CheapOair deal was found by Cheapflights users on 10/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/123:00 pm -
1 stop13h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$227
This United Airlines deal was found by Cheapflights users on 10/24. 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 12/216:40 am -
1 stop22h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![United Airlines logo]()
$228
This Booking.com deal was found by Cheapflights users on 10/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/203:00 pm -
1 stop13h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$231
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Wed 1/202:25 pm -
2 stops29h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![United Airlines logo]()
$233
This United Airlines deal was found by Cheapflights users on 10/20. 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 11/146:40 am -
1 stop23h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![United Airlines logo]()
$234
This American Airlines deal was found by Cheapflights users on 10/22. 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 10/293:01 pm -
2 stops27h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![American Airlines logo]()
$238
This American Airlines deal was found by Cheapflights users on 10/22. 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 11/26:20 am -
2 stops16h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![American Airlines logo]()
$243
Find flight deals from San José to Dulles Intl
Discover tips and strategies to find the most affordable flight options for your journey from San José (SJO) to Dulles Intl (IAD). 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 October 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $362 (Avianca) |
One-way from | $218 (BusinessClass) |
Popular in | July |
Cheapest in | February |
Average price | $354 |
Good round-trip deal | $395 or less |
Good one-way deal | $369 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from San José to Dulles Intl 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 October 24, 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
Cheapest round-trip
Quickest round-trip
San JoséWashington, D.C.
SJO San José Juan Santamaria Intl - IAD Washington, D.C. Dulles Intl
SJOIAD
San José Juan Santamaria Intl
Wed 2/10
2:15 pm-7:59 pm
Nonstop4h 44m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$218
San JoséWashington, D.C.
SJO San José Juan Santamaria Intl - IAD Washington, D.C. Dulles Intl
SJOIAD
San José Juan Santamaria Intl
Wed 1/13
2:15 pm-7:59 pm
Nonstop4h 44m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$229
San JoséWashington, D.C.
SJO San José Juan Santamaria Intl - IAD Washington, D.C. Dulles Intl
SJOIAD
San José Juan Santamaria Intl
Mon 12/21
2:15 pm-7:59 pm
Nonstop4h 44m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$229
San JoséWashington, D.C.
SJO San José Juan Santamaria Intl - IAD Washington, D.C. Dulles Intl
SJOIAD
San José Juan Santamaria Intl
Sat 11/21
2:15 pm-7:59 pm
Nonstop4h 44m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$229
San JoséWashington, D.C.
SJO San José Juan Santamaria Intl - IAD Washington, D.C. Dulles Intl
SJOIAD
San José Juan Santamaria Intl
Fri 11/13
2:37 pm-12:41 am
1 stop9h 04m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$233
San JoséWashington, D.C.
SJO San José Juan Santamaria Intl - IAD Washington, D.C. Dulles Intl
SJOIAD
San José Juan Santamaria Intl
Wed 12/2
11:28 pm-10:54 pm
1 stop22h 26m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$233
San JoséWashington, D.C.
SJO San José Juan Santamaria Intl - IAD Washington, D.C. Dulles Intl
SJOIAD
San José Juan Santamaria Intl
Wed 11/25
9:40 am-4:08 pm
1 stop29h 28m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$233
San JoséWashington, D.C.
SJO San José Juan Santamaria Intl - IAD Washington, D.C. Dulles Intl
SJOIAD
San José Juan Santamaria Intl
Thu 10/29
10:28 pm-4:35 pm
1 stop16h 07m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$234
San JoséWashington, D.C.
SJO San José Juan Santamaria Intl - IAD Washington, D.C. Dulles Intl
SJOIAD
San José Juan Santamaria Intl
Sun 12/13
11:28 pm-9:13 pm
1 stop20h 45m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$234
San JoséWashington, D.C.
SJO San José Juan Santamaria Intl - IAD Washington, D.C. Dulles Intl
SJOIAD
San José Juan Santamaria Intl
Tue 11/10
1:55 pm-11:25 pm
1 stop8h 30m
Washington, D.C. Dulles Intl
Sat 11/14
12:40 pm-10:00 pm
1 stop10h 20m
$366
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from San José to Dulles Intl
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 San José to Dulles Intl in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San José-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San José-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San José-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San José-Washington, D.C. Dulles Intl Airport 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 San José-Washington, D.C. Dulles Intl Airport 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 San José to Dulles Intl
Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from San José with our price prediction graph.
SJO-IAD
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 San José to Washington, D.C. Dulles Intl Airport
Prices
Delays
How far ahead should I book a flight from San José to Washington, D.C. Dulles Intl Airport?
Booking 71 days in advance of your planned departure date is, on average, the best time to get cheap flights from San José to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from San José to Washington, D.C. Dulles Intl Airport?
Currently, February is the cheapest month in which you can book a flight from San José to Washington, D.C. Dulles Intl Airport (average of $305). Flying from San José to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of $417). 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 SJO to IAD?
Find hourly flight availability from San José to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 24, 2026.
When flying from San José to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How often are flights from San José to Washington, D.C. delayed?
About 14% of weekly flights between San José and Washington, D.C. have experienced delays in the past year, with the average delay time being 128 minutes.
What is the most punctual flight time for San José to Washington, D.C. flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on San José to Washington, D.C. flights?
Over the last year, Avianca have had the lowest number of delays on this route, with just 12% of flights being delayed.
The best insider tips for San José to Washington, D.C. Dulles Intl Airport flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your San José to Washington, D.C. Dulles Intl Airport trip
Our travel experts
Reviews of airlines servicing Dulles Intl
Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated October 24, 2026.
Peruse reviews from past customers who have flown with Copa Airlines,United Airlines, andAvianca from San José to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
6.9
Overall
7.6
Comfort
7.4
Crew
8.1
Food
7.0
Boarding
7.8
Reviews
1 / 20
4.0
OkayPaul,Jun 2025
PTY - MIA
Entertainment
6.9
Overall
7.6
Comfort
7.4
Crew
8.1
Food
7.0
Boarding
7.8
Reviews
1 / 20
4.0
OkayPaul,Jun 2025
PTY - MIA
Entertainment
6.9
Overall
7.6
Comfort
7.4
Crew
8.1
Food
7.0
Boarding
7.8
Reviews
1 / 20
4.0
OkayPaul,Jun 2025
PTY - MIA
Entertainment
6.9
Overall
7.6
Comfort
7.4
Crew
8.1
Food
7.0
Boarding
7.8
Reviews
1 / 20
4.0
OkayPaul,Jun 2025
PTY - MIA
Related info for your journey
Find useful and relevant information for your journey from San José to Dulles Intl. 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 Washington, D.C. Dulles Intl Airport?
Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locationsAlexandria
Chantilly
Woodbridge
Arlington
Owings Mills
Lanham
Sterling
Reston
Herndon
Hyattsville
Rockville
Springfield
Fredericksburg
Falls Church
Tysons
Towson
Oxon Hill
Laurel
Clinton
Hunt Valley
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Other flights to Dulles Intl
Explore flights to Dulles Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 24, 2026.
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San José and Dulles Intl flights
Browse other San José and Dulles Intl flight options. Last updated on October 24, 2026.
Other flights from San José
Browse through other flights departing from San José. Flights are based on user searches made on Cheapflights and were last updated on October 24, 2026.
Popular flight searches
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Top 3 airlines flying from San José to Dulles Intl
Discover the top 3 airlines that operate flights from San José to Dulles Intl. 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 October 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$201 | Average$361 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$216 | Average$352 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$294 | Average$404 | FlexibilityNo cancel fee | On-time70% |