$166+ Cheap flights from Costa Rica 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — IAD
Oct 4 — Oct 111
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Costa Rica 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.Cheap flight deals from Costa Rica to Dulles Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Costa Rica to Dulles IntlExplore the most affordable flight options available from Costa Rica to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 4, 2026.
Explore the most affordable flight options available from Costa Rica to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 4, 2026.
This United Airlines deal was found by Cheapflights users on 9/3. 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 12/182:00 pm -
Nonstop4h 35m
Tue 12/2910:54 pm -
1 stop15h 16m
Deal found 9/3![United Airlines logo]()
$312
This United Airlines deal was found by Cheapflights users on 9/3. 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 12/1812:30 pm -
1 stop22h 24m
Wed 12/3010:45 pm -
1 stop16h 55m
Deal found 9/3![United Airlines logo]()
$317
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/241:20 pm -
1 stop9h 10m
Sun 9/276:15 am -
1 stop7h 55m
Deal found 9/1![United Airlines logo]()
$321
This United Airlines deal was found by Cheapflights users on 9/3. 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 12/182:00 pm -
Nonstop4h 35m
Fri 1/110:54 pm -
1 stop15h 16m
Deal found 9/3![United Airlines logo]()
$338
This American Airlines deal was found by Cheapflights users on 8/31. 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 10/12:18 pm -
1 stop28h 06m
Sat 10/107:15 pm -
2 stops20h 03m
Deal found 8/31![American Airlines logo]()
$341
This American Airlines deal was found by Cheapflights users on 9/3. 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 10/22:18 pm -
1 stop22h 00m
Sat 10/107:15 pm -
2 stops20h 28m
Deal found 9/3![American Airlines logo]()
$342
This United Airlines deal was found by Cheapflights users on 9/3. 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 12/192:00 pm -
Nonstop4h 35m
Wed 12/3010:54 pm -
1 stop15h 16m
Deal found 9/3![United Airlines logo]()
$343
This United Airlines deal was found by Cheapflights users on 9/3. 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 12/1812:30 pm -
1 stop11h 09m
Thu 12/3110:45 pm -
1 stop16h 55m
Deal found 9/3![United Airlines logo]()
$344
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/225:55 pm -
1 stop8h 25m
Thu 10/292:25 am -
1 stop6h 59m
Deal found 9/3![Copa Airlines logo]()
$346
This United Airlines deal was found by Cheapflights users on 9/3. 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 12/198:45 am -
1 stop14h 56m
Tue 12/2910:54 pm -
1 stop15h 16m
Deal found 9/3![United Airlines logo]()
$349
This United Airlines deal was found by Cheapflights users on 9/3. 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 12/188:45 am -
1 stop8h 51m
Sat 1/210:45 pm -
1 stop16h 55m
Deal found 9/3![United Airlines logo]()
$351
This United Airlines deal was found by Cheapflights users on 9/4. 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 11/72:15 pm -
Nonstop4h 44m
Thu 11/126:00 am -
1 stop15h 39m
Deal found 9/4![United Airlines logo]()
$361
Best flights from Costa Rica to Dulles IntlDiscover carefully curated flight deals from Costa Rica to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
Discover carefully curated flight deals from Costa Rica to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/241:20 pm -
1 stop9h 10m
Sun 9/276:15 am -
1 stop7h 55m
Deal found 9/1![United Airlines logo]()
$321
This American Airlines deal was found by Cheapflights users on 9/2. 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 1/123:30 pm -
2 stops26h 15m
Sun 1/177:15 pm -
1 stop18h 02m
Deal found 9/2![American Airlines logo]()
$336
This Copa Airlines deal was found by Cheapflights users on 9/4. 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 10/228:45 am -
1 stop17h 35m
Mon 10/262:25 am -
1 stop7h 54m
Deal found 9/4![Copa Airlines logo]()
$363
This Volaris deal was found by Cheapflights users on 8/31. 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 Volaris is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/244:15 pm -
1 stop11h 45m
Sun 1/36:40 am -
1 stop18h 19m
Deal found 8/31![Multiple Airlines logo]()
$382
This Faresmojo deal was found by Cheapflights users on 8/31. 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.
Fri 10/21:25 pm -
1 stop9h 16m
Sun 10/116:00 am -
1 stop7h 35m
Deal found 8/31![JetBlue logo]()
$411
This American Airlines deal was found by Cheapflights users on 8/31. 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 10/22:18 pm -
1 stop22h 00m
Sun 10/117:15 pm -
2 stops20h 03m
Deal found 8/31![American Airlines logo]()
$341
This United Airlines deal was found by Cheapflights users on 9/3. 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 12/198:45 am -
1 stop14h 56m
Tue 12/2910:54 pm -
1 stop15h 16m
Deal found 9/3![United Airlines logo]()
$349
This Copa Airlines deal was found by Cheapflights users on 9/1. 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.
Wed 10/288:44 am -
1 stop13h 53m
Sat 11/71:16 am -
1 stop10h 43m
Deal found 9/1![Copa Airlines logo]()
$363
This American Airlines deal was found by Cheapflights users on 9/3. 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 10/12:47 pm -
2 stops26h 12m
Sat 10/107:15 pm -
2 stops20h 28m
Deal found 9/3![American Airlines logo]()
$343
This Copa Airlines deal was found by Cheapflights users on 9/3. 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 10/234:08 am -
1 stop22h 12m
Sat 10/311:36 am -
1 stop11h 23m
Deal found 9/3![Copa Airlines logo]()
$363
This United Airlines deal was found by Cheapflights users on 9/1. 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 10/3011:35 am -
1 stop21h 53m
Mon 11/96:00 am -
1 stop8h 22m
Deal found 9/1![United Airlines logo]()
$366
This United Airlines deal was found by Cheapflights users on 9/1. 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 10/3011:35 am -
1 stop11h 02m
Sun 11/88:15 am -
1 stop25h 17m
Deal found 9/1![United Airlines logo]()
$366
This Copa Airlines deal was found by Cheapflights users on 8/30. 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.
Wed 10/218:45 am -
1 stop13h 47m
Thu 11/123:37 pm -
1 stop18h 30m
Deal found 8/30![Copa Airlines logo]()
$382
This United Airlines deal was found by Cheapflights users on 9/4. 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 10/31:20 pm -
1 stop27h 42m
Fri 10/910:40 pm -
1 stop14h 04m
Deal found 9/4![United Airlines logo]()
$375
This Copa Airlines deal was found by Cheapflights users on 8/31. 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.
Wed 3/32:20 pm -
1 stop12h 52m
Tue 3/91:14 am -
1 stop13h 06m
Deal found 8/31![Copa Airlines logo]()
$382
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/311:15 pm -
Nonstop4h 44m
Sat 11/78:25 am -
1 stop23h 00m
Deal found 9/3![United Airlines logo]()
$382
This United Airlines deal was found by Cheapflights users on 8/31. 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 9/171:25 pm -
1 stop9h 05m
Tue 10/2712:35 pm -
1 stop20h 57m
Deal found 8/31![United Airlines logo]()
$387
This United Airlines deal was found by Cheapflights users on 8/31. 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 11/212:35 pm -
1 stop9h 09m
Sat 11/78:59 am -
Nonstop5h 01m
Deal found 8/31![United Airlines logo]()
$387
This United Airlines deal was found by Cheapflights users on 9/1. 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 10/11:20 pm -
1 stop29h 47m
Sat 10/106:15 am -
1 stop7h 55m
Deal found 9/1![United Airlines logo]()
$420
Last-minute flights from Costa Rica to Dulles IntlDiscover last-minute flight deals from Costa Rica to Dulles Intl. Data last updated September 4, 2026 and is based on user searches.
Discover last-minute flight deals from Costa Rica to Dulles Intl. Data last updated September 4, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/241:20 pm -
1 stop9h 10m
Sun 9/276:15 am -
1 stop7h 55m
Deal found 9/1![United Airlines logo]()
$321
This American Airlines deal was found by Cheapflights users on 8/31. 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 10/12:18 pm -
1 stop28h 06m
Sat 10/107:15 pm -
2 stops20h 03m
Deal found 8/31![American Airlines logo]()
$341
This American Airlines deal was found by Cheapflights users on 9/3. 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 10/22:18 pm -
1 stop22h 00m
Sat 10/107:15 pm -
2 stops20h 28m
Deal found 9/3![American Airlines logo]()
$342
This American Airlines deal was found by Cheapflights users on 9/3. 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 10/32:47 pm -
2 stops27h 56m
Sat 10/107:15 pm -
2 stops20h 03m
Deal found 9/3![American Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/311:49 am -
1 stop21h 36m
Fri 10/96:45 am -
1 stop29h 59m
Deal found 9/3![United Airlines logo]()
$375
This American Airlines deal was found by Cheapflights users on 9/3. 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 10/152:44 pm -
2 stops28h 32m
Fri 10/237:13 pm -
2 stops20h 05m
Deal found 9/3![American Airlines logo]()
$362
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/225:55 pm -
1 stop8h 25m
Thu 10/292:25 am -
1 stop6h 59m
Deal found 9/3![Copa Airlines logo]()
$346
This Copa Airlines deal was found by Cheapflights users on 9/3. 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 10/228:45 am -
1 stop17h 35m
Mon 10/262:25 am -
1 stop7h 54m
Deal found 9/3![Copa Airlines logo]()
$363
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/221:25 pm -
1 stop27h 37m
Fri 11/610:10 pm -
1 stop33h 15m
Deal found 9/3![United Airlines logo]()
$366
This United Airlines deal was found by Cheapflights users on 9/1. 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 10/221:25 pm -
1 stop9h 05m
Sat 10/245:48 pm -
1 stop15h 27m
Deal found 9/1![United Airlines logo]()
$375
This United Airlines deal was found by Cheapflights users on 9/4. 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 10/267:45 am -
1 stop12h 59m
Sat 10/318:59 am -
Nonstop5h 01m
Deal found 9/4![United Airlines logo]()
$371
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/315:55 pm -
1 stop8h 20m
Fri 11/61:16 am -
1 stop8h 03m
Deal found 9/3![Copa Airlines logo]()
$377
One-way flights from Costa Rica to Dulles IntlSearch for one-way flight options from Costa Rica to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
Search for one-way flight options from Costa Rica to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
This American Airlines deal was found by Cheapflights users on 9/2. 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 9/252:18 pm -
1 stop22h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![American Airlines logo]()
$166
This United Airlines deal was found by Cheapflights users on 9/2. 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 11/205:20 pm -
1 stop13h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![United Airlines logo]()
$184
This United Airlines deal was found by Cheapflights users on 9/1. 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 12/232:00 pm -
Nonstop4h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![United Airlines logo]()
$187
This American Airlines deal was found by Cheapflights users on 9/1. 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 12/241:31 pm -
1 stop8h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![American Airlines logo]()
$190
This American Airlines deal was found by Cheapflights users on 9/2. 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 11/203:32 pm -
2 stops16h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![American Airlines logo]()
$200
This Justfly.com deal was found by Cheapflights users on 9/3. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/203:10 pm -
2 stops23h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Air Canada logo]()
$205
This United Airlines deal was found by Cheapflights users on 9/1. 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 12/242:00 pm -
Nonstop4h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![United Airlines logo]()
$208
This United Airlines deal was found by Cheapflights users on 9/2. 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 12/55:20 pm -
1 stop26h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![United Airlines logo]()
$212
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/18:45 am -
1 stop35h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![United Airlines logo]()
$223
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/188:45 am -
1 stop32h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![United Airlines logo]()
$226
This United Airlines deal was found by Cheapflights users on 9/2. 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 12/1812:35 pm -
1 stop9h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![United Airlines logo]()
$228
This United Airlines deal was found by Cheapflights users on 8/31. 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 12/291:15 am -
1 stop22h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![United Airlines logo]()
$234
Find flight deals from Costa Rica to Dulles Intl
Keep the following information in mind while searching for Costa Rica to Dulles Intl flight deals. Data was last updated September 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $312 (United Airlines) |
One-way from | $166 (American Airlines) |
Popular in | August |
Cheapest in | February |
Average price | $351 |
Good round-trip deal | $377 or less |
Good one-way deal | $181 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Costa Rica 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 September 4, 2026.
Use the filters below to find and compare flights from Costa Rica to Washington, D.C. Dulles Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LiberiaWashington, D.C.
LIR Liberia - IAD Washington, D.C. Dulles Intl
LIRIAD
Liberia
Fri 11/20
5:20 pm-7:20 am
1 stop13h 00m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$184
Quickest round-trip
LiberiaWashington, D.C.
LIR Liberia - IAD Washington, D.C. Dulles Intl
LIRIAD
Liberia
Wed 12/23
2:00 pm-7:35 pm
Nonstop4h 35m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$187
LiberiaWashington, D.C.
LIR Liberia - IAD Washington, D.C. Dulles Intl
LIRIAD
Liberia
Tue 1/19
5:15 pm-11:00 pm
1 stop28h 45m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$190
LiberiaWashington, D.C.
LIR Liberia - IAD Washington, D.C. Dulles Intl
LIRIAD
Liberia
Thu 12/24
2:00 pm-7:35 pm
Nonstop4h 35m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$208
LiberiaWashington, D.C.
LIR Liberia - IAD Washington, D.C. Dulles Intl
LIRIAD
Liberia
Mon 1/25
8:35 am-11:37 am
1 stop26h 02m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$212
LiberiaWashington, D.C.
LIR Liberia - IAD Washington, D.C. Dulles Intl
LIRIAD
Liberia
Sat 12/5
5:20 pm-8:33 pm
1 stop26h 13m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$212
LiberiaWashington, D.C.
LIR Liberia - IAD Washington, D.C. Dulles Intl
LIRIAD
Liberia
Thu 9/24
1:20 pm-9:07 pm
1 stop29h 47m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$215
San JoséWashington, D.C.
SJO San José Juan Santamaria Intl - IAD Washington, D.C. Dulles Intl
SJOIAD
San José Juan Santamaria Intl
Thu 10/1
8:45 am-10:07 pm
1 stop35h 22m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$223
San JoséWashington, D.C.
SJO San José Juan Santamaria Intl - IAD Washington, D.C. Dulles Intl
SJOIAD
San José Juan Santamaria Intl
Fri 9/18
8:45 am-7:05 pm
1 stop32h 20m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$226
San JoséWashington, D.C.
SJO San José Juan Santamaria Intl - IAD Washington, D.C. Dulles Intl
SJOIAD
San José Juan Santamaria Intl
Wed 12/23
2:15 pm-7:59 pm
Nonstop4h 44m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$228
Showing 1-10 of 37 resultsSorted by cheapest first
Best time to book a flight from Costa Rica to Dulles Intl
Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Costa Rica with our price prediction graph.
LIR-IAD
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 Costa Rica to Washington, D.C. Dulles Intl Airport
CR0-IAD
LIR-IAD
SJO-IAD
What is the cheapest month to book a flight from Costa Rica to Washington, D.C. Dulles Intl Airport?
Currently, October is the cheapest month in which you can book a flight from Costa Rica to Washington, D.C. Dulles Intl Airport (average of $256). Flying from Costa Rica to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $415). 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 CR to IAD?
Find hourly flight availability from Costa Rica 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 September 4, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Costa Rica to Washington, D.C. Dulles Intl Airport as you normally would.
How often are flights from Costa Rica to Washington, D.C. delayed?
About 15% of weekly flights between Costa Rica and Washington, D.C. have experienced delays in the past year, with the average delay time being 122 minutes.
What is the most punctual flight time for Costa Rica 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?
Thursday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Costa Rica to Washington, D.C. flights?
Over the last year, Avianca have had the lowest number of delays on this route, with just 13% of flights being delayed.
How far ahead should I book a flight from Costa Rica to Washington, D.C. Dulles Intl Airport?
To ensure you get the cheapest price possible for a flight from Costa Rica to Washington, D.C. Dulles Intl Airport, you should look to book at least 70 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.
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 September 4, 2026.
Read through reviews of airlines operating flights from Costa Rica to Washington, D.C. Dulles Intl Airport, such as Copa Airlines,United Airlines, andAvianca. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
6.9
Overall
7.6
Crew
8.1
Boarding
7.8
Entertainment
6.9
Comfort
7.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
PEI - PTY
Food
6.9
Overall
7.6
Crew
8.1
Boarding
7.8
Entertainment
6.9
Comfort
7.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
PEI - PTY
Food
6.9
Overall
7.6
Crew
8.1
Boarding
7.8
Entertainment
6.9
Comfort
7.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
PEI - PTY
Food
6.9
Overall
7.6
Crew
8.1
Boarding
7.8
Entertainment
6.9
Comfort
7.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
PEI - PTY
Related info for your journey
Find useful and relevant information for your journey from Costa Rica 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
Owings Mills
Arlington
Tysons
Lanham
Reston
Herndon
Rockville
Chantilly
Hyattsville
Fredericksburg
Woodbridge
Falls Church
Sterling
Hanover
Laurel
Oxon Hill
Clinton
Hunt Valley
Silver Spring
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Dulles Intl flight routes
Flights by cabin class
Other flight options
Popular flights
Alternative routes for Costa Rica to Dulles Intl
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Dulles Intl by adding a car rental and/or hotel reservation to your travel itinerary.
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 September 4, 2026.
Search flights from Costa Rica to Dulles Intl by cabin class
Find flights from Costa Rica to Dulles Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Costa Rica and Dulles Intl flights
Browse other Costa Rica and Dulles Intl flight options. Last updated on September 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Costa Rica to Dulles Intl
Discover the top 3 airlines that operate flights from Costa Rica 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 September 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$201 | Average$353 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$216 | Average$332 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$294 | Average$395 | FlexibilityNo cancel fee | On-time70% |