$349+ Cheap flights from Dulles Intl (IAD) to Keflavik Intl (KEF)
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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — KEF
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from Dulles Intl to Keflavik 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 Washington, D.C. Dulles Intl to Reykjavik Keflavik Intl are usually found in November or January, booked 76 days in advance, depart on a Monday or Sunday and return on a Tuesday
Cheap flight deals from Dulles Intl to Keflavik Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Dulles Intl to Keflavik IntlExplore the most affordable flight options available from Dulles Intl to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
Explore the most affordable flight options available from Dulles Intl to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/158:30 pm -
Nonstop5h 55m
Fri 9/257:50 pm -
Nonstop6h 25m
Deal found 9/9![Icelandair logo]()
$442
This FlightHub deal was found by Cheapflights users on 9/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:20 pm -
Nonstop5h 50m
Mon 9/214:50 pm -
Nonstop6h 30m
Deal found 9/7![Icelandair logo]()
$454
This Gotogate deal was found by Cheapflights users on 9/6. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2511:20 pm -
Nonstop5h 50m
Fri 10/24:50 pm -
Nonstop6h 30m
Deal found 9/6![Icelandair logo]()
$459
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:30 pm -
Nonstop5h 55m
Thu 10/14:50 pm -
Nonstop6h 30m
Deal found 9/9![Icelandair logo]()
$461
This Kiwi.com deal was found by Cheapflights users on 9/7. 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.
Tue 9/158:30 pm -
Nonstop5h 55m
Sun 9/204:50 pm -
Nonstop6h 30m
Deal found 9/7![Icelandair logo]()
$463
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Wed 9/98:30 pm -
Nonstop5h 55m
Sat 9/197:50 pm -
Nonstop6h 25m
Deal found 9/9![Icelandair logo]()
$464
This Icelandair deal was found by Cheapflights users on 9/7. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:20 pm -
Nonstop5h 50m
Thu 9/244:50 pm -
Nonstop6h 30m
Deal found 9/7![Icelandair logo]()
$465
This AirNGo deal was found by Cheapflights users on 9/6. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:30 pm -
Nonstop5h 55m
Sat 9/264:50 pm -
Nonstop6h 30m
Deal found 9/6![Icelandair logo]()
$470
This oojo deal was found by Cheapflights users on 9/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2711:20 pm -
Nonstop5h 50m
Fri 10/24:50 pm -
Nonstop6h 30m
Deal found 9/6![Icelandair logo]()
$471
This oojo deal was found by Cheapflights users on 9/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/288:30 pm -
Nonstop5h 55m
Fri 10/24:50 pm -
Nonstop6h 30m
Deal found 9/6![Icelandair logo]()
$472
This Cheapflightsfares deal was found by Cheapflights users on 9/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:40 pm -
Nonstop5h 50m
Sun 11/14:50 pm -
Nonstop6h 40m
Deal found 9/6![Icelandair logo]()
$473
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:30 pm -
Nonstop5h 55m
Fri 9/257:50 pm -
Nonstop6h 25m
Deal found 9/9![Icelandair logo]()
$474
Best flights from Dulles Intl to Keflavik IntlDiscover carefully curated flight deals from Dulles Intl to Keflavik Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from Dulles Intl to Keflavik Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This United Airlines deal was found by Cheapflights users on 9/7. 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 10/173:45 pm -
1 stop12h 10m
Mon 11/212:00 pm -
1 stop14h 13m
Deal found 9/7![United Airlines logo]()
$500
This United deal was found by Cheapflights users on 9/8. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/169:55 am -
1 stop18h 50m
Tue 10/2010:00 am -
2 stops29h 44m
Deal found 9/8![Multiple Airlines logo]()
$639
This Scandinavian Airlines deal was found by Cheapflights users on 9/6. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/78:30 pm -
2 stops33h 40m
Tue 11/1011:55 am -
2 stops34h 20m
Deal found 9/6![Scandinavian Airlines logo]()
$767
This United Airlines deal was found by Cheapflights users on 9/9. 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 9/1712:43 pm -
1 stop15h 12m
Mon 9/2111:30 am -
Nonstop6h 25m
Deal found 9/9![United Airlines logo]()
$504
This United Airlines deal was found by Cheapflights users on 9/5. 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 12/310:10 pm -
1 stop30h 50m
Thu 12/1012:00 pm -
1 stop14h 05m
Deal found 9/5![United Airlines logo]()
$507
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/305:29 pm -
1 stop12h 31m
Mon 11/212:00 pm -
1 stop17h 30m
Deal found 9/6![United Airlines logo]()
$607
This United Airlines deal was found by Cheapflights users on 9/9. 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 11/1710:47 pm -
1 stop30h 13m
Thu 11/2612:00 pm -
1 stop10h 24m
Deal found 9/9![United Airlines logo]()
$613
This United Airlines deal was found by Cheapflights users on 9/8. 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 10/148:15 am -
2 stops20h 30m
Tue 10/2010:00 am -
2 stops25h 43m
Deal found 9/8![United Airlines logo]()
$639
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/116:10 am -
1 stop22h 40m
Fri 10/169:15 am -
2 stops50h 08m
Deal found 9/6![United Airlines logo]()
$703
This United Airlines deal was found by Cheapflights users on 9/7. 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 9/273:47 pm -
1 stop13h 03m
Fri 10/29:15 am -
2 stops34h 46m
Deal found 9/7![United Airlines logo]()
$771
Last-minute flights from Dulles Intl to Keflavik IntlDiscover last-minute flight deals from Dulles Intl to Keflavik Intl. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to Keflavik Intl. Data last updated September 10, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 9/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:20 pm -
Nonstop5h 50m
Mon 9/214:50 pm -
Nonstop6h 30m
Deal found 9/7![Icelandair logo]()
$454
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 9/1211:20 pm -
Nonstop5h 50m
Sat 9/194:50 pm -
Nonstop6h 30m
Deal found 9/9![Icelandair logo]()
$464
This Icelandair deal was found by Cheapflights users on 9/7. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:20 pm -
Nonstop5h 50m
Thu 9/244:50 pm -
Nonstop6h 30m
Deal found 9/7![Icelandair logo]()
$465
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/158:30 pm -
Nonstop5h 55m
Fri 9/257:50 pm -
Nonstop6h 25m
Deal found 9/9![Icelandair logo]()
$442
This Kiwi.com deal was found by Cheapflights users on 9/7. 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.
Tue 9/158:30 pm -
Nonstop5h 55m
Sun 9/204:50 pm -
Nonstop6h 30m
Deal found 9/7![Icelandair logo]()
$463
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:30 pm -
Nonstop5h 55m
Fri 9/257:50 pm -
Nonstop6h 25m
Deal found 9/9![Icelandair logo]()
$474
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:30 pm -
Nonstop5h 55m
Thu 10/14:50 pm -
Nonstop6h 30m
Deal found 9/9![Icelandair logo]()
$461
This AirNGo deal was found by Cheapflights users on 9/6. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:30 pm -
Nonstop5h 55m
Sat 9/264:50 pm -
Nonstop6h 30m
Deal found 9/6![Icelandair logo]()
$470
This Gotogate deal was found by Cheapflights users on 9/6. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2511:20 pm -
Nonstop5h 50m
Fri 10/24:50 pm -
Nonstop6h 30m
Deal found 9/6![Icelandair logo]()
$459
This oojo deal was found by Cheapflights users on 9/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2711:20 pm -
Nonstop5h 50m
Fri 10/24:50 pm -
Nonstop6h 30m
Deal found 9/6![Icelandair logo]()
$471
This oojo deal was found by Cheapflights users on 9/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/288:30 pm -
Nonstop5h 55m
Fri 10/24:50 pm -
Nonstop6h 30m
Deal found 9/6![Icelandair logo]()
$472
This Cheapflightsfares deal was found by Cheapflights users on 9/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:40 pm -
Nonstop5h 50m
Sun 11/14:50 pm -
Nonstop6h 40m
Deal found 9/6![Icelandair logo]()
$473
One-way flights from Dulles Intl to Keflavik IntlSearch for one-way flight options from Dulles Intl to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
Search for one-way flight options from Dulles Intl to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1111:20 pm -
Nonstop5h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Icelandair logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 9/7. 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.
Wed 12/98:50 pm -
2 stops31h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$355
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/1511:25 am -
3 stops40h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$375
This Kiwi.com deal was found by Cheapflights users on 9/7. 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.
Mon 10/198:30 pm -
Nonstop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Icelandair logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Tue 10/208:30 pm -
Nonstop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Icelandair logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Sun 11/1510:30 pm -
2 stops31h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$381
This oojo deal was found by Cheapflights users on 9/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:30 pm -
Nonstop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Icelandair logo]()
$391
This oojo deal was found by Cheapflights users on 9/5. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:30 pm -
Nonstop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Icelandair logo]()
$402
This Mytrip deal was found by Cheapflights users on 9/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:30 pm -
Nonstop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Icelandair logo]()
$419
Find flight deals from Dulles Intl to Keflavik Intl
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Keflavik Intl (KEF). 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 September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $459 (Gotogate) |
One-way from | $349 (Cheapflightsfares) |
Popular in | June |
Cheapest in | November |
Average price | $618 |
Good round-trip deal | $578 or less |
Good one-way deal | $302 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles Intl to Keflavik 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 10, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Reykjavik Keflavik Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Tue 10/27
6:25 pm-10:50 am
3 stops36h 25m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$429
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Sat 9/19
8:15 am-7:55 am
2 stops19h 40m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$439
Quickest round-trip
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Wed 11/25
7:40 pm-6:30 am
Nonstop5h 50m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$443
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Thu 11/26
7:40 pm-6:30 am
Nonstop5h 50m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$443
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Tue 9/15
8:30 pm-6:25 am
Nonstop5h 55m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$491
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Fri 10/9
8:30 pm-6:25 am
Nonstop5h 55m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$498
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Sat 10/17
3:45 pm-7:55 am
1 stop12h 10m
Reykjavik Keflavik Intl
Mon 11/2
12:00 pm-9:13 pm
1 stop14h 13m
$500
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Thu 9/17
12:43 pm-7:55 am
1 stop15h 12m
Reykjavik Keflavik Intl
Mon 9/21
11:30 am-1:55 pm
Nonstop6h 25m
$504
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Thu 12/3
10:10 pm-10:00 am
1 stop30h 50m
Reykjavik Keflavik Intl
Thu 12/10
12:00 pm-9:05 pm
1 stop14h 05m
$507
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Wed 11/25
8:30 pm-5:20 pm
1 stop15h 50m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-7:00 pm
Nonstop0h 00m
$537
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Dulles Intl to Keflavik 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 Dulles Intl to Keflavik Intl in September.
| 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 Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Reykjavik Keflavik Intl Airport 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-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Reykjavik Keflavik Intl Airport 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-Reykjavik Keflavik 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 Washington, D.C. Dulles Intl Airport-Reykjavik Keflavik 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 Dulles Intl to Keflavik Intl
Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Dulles Intl with our price prediction graph.
IAD-KEF
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 Reykjavik Keflavik Intl Airport
Prices
Airlines
Delays
How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Reykjavik Keflavik Intl Airport?
The best time to book flights from Washington, D.C. Dulles Intl Airport to Reykjavik Keflavik Intl Airport is 75 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Reykjavik Keflavik Intl Airport?
Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Reykjavik Keflavik Intl Airport (average of $475). Flying from Washington, D.C. Dulles Intl Airport to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $722). 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 KEF?
Find hourly flight availability from Dulles Intl to Keflavik 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 10, 2026.
When flying from Washington, D.C. Dulles Intl Airport to Reykjavik Keflavik 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 Washington, D.C. to Reykjavik delayed?
About 13% of weekly flights between Washington, D.C. and Reykjavik have experienced delays in the past year, with the average delay time being 171 minutes.
What is the most punctual flight time for Washington, D.C. to Reykjavik flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night 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 Wednesday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Washington, D.C. to Reykjavik flights?
Over the last year, Icelandair have had the lowest number of delays on this route, with just 11% of flights being delayed.
The best insider tips for Washington, D.C. Dulles Intl Airport to Reykjavik Keflavik 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 Washington, D.C. Dulles Intl Airport to Reykjavik Keflavik Intl Airport trip
Our travel experts
Reviews of airlines servicing Keflavik Intl
Get insights into the airlines that provide service to Keflavik 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 Keflavik Intl. Reviews last updated September 10, 2026.
Peruse reviews from past customers who have flown with United Airlines and Icelandair from Washington, D.C. Dulles Intl Airport to Reykjavik Keflavik 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.
Food
6.7
Crew
8.1
Overall
7.4
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
IAD - TYS
Food
6.7
Crew
8.1
Overall
7.4
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
IAD - TYS
Food
6.7
Crew
8.1
Overall
7.4
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
IAD - TYS
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl to Keflavik 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 Reykjavik Keflavik Intl Airport?
Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locationsKeflavik
Hveragerdi
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Other flights to Keflavik Intl
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Dulles Intl and Keflavik Intl flights
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Top 2 airlines flying from Dulles Intl to Keflavik Intl
Discover the top 2 airlines that operate flights from Dulles Intl to Keflavik 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 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$361 | Average$618 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$499 | Average$834 | FlexibilityNo cancel fee | On-time69% |