$362+ Cheap flights from Dulles Intl (IAD) to Keflavik Intl (KEF)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — KEF
Oct 2 — Oct 91
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 2, 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 2, 2026.
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:30 pm -
Nonstop5h 55m
Mon 9/144:50 pm -
Nonstop6h 30m
Deal found 8/30![Icelandair logo]()
$420
This Kiwi.com deal was found by Cheapflights users on 8/29. 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
Tue 9/154:50 pm -
Nonstop6h 30m
Deal found 8/29![Icelandair logo]()
$429
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:30 pm -
Nonstop5h 55m
Fri 9/184:50 pm -
Nonstop6h 30m
Deal found 8/30![Icelandair logo]()
$430
This Icelandair 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:30 pm -
Nonstop5h 55m
Fri 9/187:50 pm -
Nonstop6h 25m
Deal found 9/2![Icelandair logo]()
$431
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:30 pm -
Nonstop5h 55m
Sat 9/127:50 pm -
Nonstop6h 25m
Deal found 9/1![Icelandair logo]()
$432
This Flightnetwork 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:30 pm -
Nonstop5h 55m
Sun 9/204:50 pm -
Nonstop6h 30m
Deal found 8/31![Icelandair logo]()
$434
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:20 pm -
Nonstop5h 50m
Wed 9/307:50 pm -
Nonstop6h 25m
Deal found 8/30![Icelandair logo]()
$439
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/138:30 pm -
Nonstop5h 55m
Sun 9/204:50 pm -
Nonstop6h 30m
Deal found 8/30![Icelandair logo]()
$440
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:20 pm -
Nonstop5h 50m
Sat 9/264:50 pm -
Nonstop6h 30m
Deal found 9/1![Icelandair logo]()
$441
This Cheapflightsfares 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 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 9/1![Icelandair logo]()
$442
This oojo 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 oojo 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 8/31![Icelandair logo]()
$452
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/138:30 pm -
Nonstop5h 55m
Sat 9/194:50 pm -
Nonstop6h 30m
Deal found 9/2![Icelandair logo]()
$454
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 2, 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 2, 2026.
This Cheapflightsfares 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 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 9/2![Icelandair logo]()
$442
This United Airlines deal was found by Cheapflights users on 8/29. 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 9/1210:35 pm -
Nonstop5h 55m
Fri 9/189:15 am -
2 stops34h 46m
Deal found 8/29![United Airlines logo]()
$491
This United 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:13 am -
1 stop22h 37m
Tue 9/1510:00 am -
2 stops25h 43m
Deal found 9/2![Multiple Airlines logo]()
$501
This Icelandair deal was found by Cheapflights users on 8/29. 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.
Tue 10/138:30 pm -
Nonstop5h 55m
Thu 10/224:50 pm -
Nonstop6h 30m
Deal found 8/29![Icelandair logo]()
$486
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 9/1110:35 pm -
Nonstop5h 55m
Tue 9/1510:00 am -
2 stops34h 01m
Deal found 9/2![United Airlines logo]()
$495
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.
Wed 9/168:35 am -
1 stop18h 25m
Sun 9/2011:30 am -
Nonstop6h 25m
Deal found 8/31![United Airlines logo]()
$497
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.
Tue 10/209:45 am -
1 stop18h 10m
Sat 10/2410:00 am -
1 stop9h 25m
Deal found 9/1![United Airlines logo]()
$498
This United Airlines deal was found by Cheapflights users on 8/29. 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 9/1010:35 pm -
Nonstop5h 55m
Wed 9/169:15 am -
1 stop29h 58m
Deal found 8/29![United Airlines logo]()
$504
This United Airlines deal was found by Cheapflights users on 8/29. 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 9/1110:35 pm -
Nonstop5h 55m
Fri 9/189:15 am -
1 stop9h 45m
Deal found 8/29![United Airlines logo]()
$504
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 9/1810:35 pm -
Nonstop5h 55m
Mon 9/2110:00 am -
2 stops25h 43m
Deal found 9/2![United Airlines logo]()
$508
Last-minute flights from Dulles Intl to Keflavik IntlDiscover last-minute flight deals from Dulles Intl to Keflavik Intl. Data last updated September 2, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to Keflavik Intl. Data last updated September 2, 2026 and is based on user searches.
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:30 pm -
Nonstop5h 55m
Sat 9/127:50 pm -
Nonstop6h 25m
Deal found 9/1![Icelandair logo]()
$432
This Kiwi.com deal was found by Cheapflights users on 8/29. 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
Tue 9/154:50 pm -
Nonstop6h 30m
Deal found 8/29![Icelandair logo]()
$429
This Icelandair 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:30 pm -
Nonstop5h 55m
Thu 9/174:50 pm -
Nonstop6h 30m
Deal found 9/2![Icelandair logo]()
$431
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:30 pm -
Nonstop5h 55m
Mon 9/144:50 pm -
Nonstop6h 30m
Deal found 8/30![Icelandair logo]()
$420
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:30 pm -
Nonstop5h 55m
Fri 9/184:50 pm -
Nonstop6h 30m
Deal found 8/30![Icelandair logo]()
$430
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:20 pm -
Nonstop5h 50m
Sat 9/264:50 pm -
Nonstop6h 30m
Deal found 9/1![Icelandair logo]()
$441
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/138:30 pm -
Nonstop5h 55m
Sun 9/277:50 pm -
Nonstop6h 25m
Deal found 9/1![Icelandair logo]()
$439
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/138:30 pm -
Nonstop5h 55m
Sun 9/204:50 pm -
Nonstop6h 30m
Deal found 8/30![Icelandair logo]()
$440
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/138:30 pm -
Nonstop5h 55m
Sat 9/194:50 pm -
Nonstop6h 30m
Deal found 9/2![Icelandair logo]()
$454
This oojo 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 oojo 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 8/31![Icelandair logo]()
$452
This Flightnetwork 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:30 pm -
Nonstop5h 55m
Sun 9/204:50 pm -
Nonstop6h 30m
Deal found 8/31![Icelandair logo]()
$434
This Cheapflightsfares 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 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 9/1![Icelandair logo]()
$442
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 2, 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 2, 2026.
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/289:55 am -
1 stop18h 50m
Deal found 8/30![Air Canada logo]()
$362
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/143:50 pm -
1 stop12h 55m
Deal found 8/30![Multiple Airlines logo]()
$363
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/203:50 pm -
2 stops13h 10m
Deal found 8/30![Multiple Airlines logo]()
$376
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:40 pm -
Nonstop5h 50m
Deal found 9/2![Icelandair logo]()
$385
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/13:50 pm -
3 stops36h 00m
Deal found 9/1![Multiple Airlines logo]()
$391
This Kiwi.com deal was found by Cheapflights users on 8/29. 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.
Fri 10/235:05 pm -
2 stops38h 35m
Deal found 8/29![Multiple Airlines logo]()
$398
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:30 pm -
Nonstop5h 55m
Deal found 9/2![Icelandair logo]()
$402
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:30 pm -
Nonstop5h 55m
Deal found 9/2![Icelandair logo]()
$404
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 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $420 (FlightHub) |
One-way from | $362 (Mytrip) |
Popular in | June |
Cheapest in | November |
Average price | $615 |
Good round-trip deal | $568 or less |
Good one-way deal | $298 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 2, 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
Quickest round-trip
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Wed 9/16
8:30 pm-6:25 am
Nonstop5h 55m
Reykjavik Keflavik Intl
Fri 9/25
7:50 pm-10:15 pm
Nonstop6h 25m
$442
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Tue 10/13
8:30 pm-6:25 am
Nonstop5h 55m
Reykjavik Keflavik Intl
Thu 10/22
4:50 pm-7:20 pm
Nonstop6h 30m
$486
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Sat 9/12
10:35 pm-8:30 am
Nonstop5h 55m
Reykjavik Keflavik Intl
Fri 9/18
9:15 am-4:01 pm
2 stops34h 46m
$491
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Fri 9/11
10:35 pm-8:30 am
Nonstop5h 55m
Reykjavik Keflavik Intl
Tue 9/15
10:00 am-4:01 pm
2 stops34h 01m
$495
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Wed 9/16
8:35 am-7:00 am
1 stop18h 25m
Reykjavik Keflavik Intl
Sun 9/20
11:30 am-1:55 pm
Nonstop6h 25m
$497
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Tue 10/20
9:45 am-7:55 am
1 stop18h 10m
Reykjavik Keflavik Intl
Sat 10/24
10:00 am-3:25 pm
1 stop9h 25m
$498
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Fri 9/11
6:13 am-8:50 am
1 stop22h 37m
Reykjavik Keflavik Intl
Tue 9/15
10:00 am-7:43 am
2 stops25h 43m
$501
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Thu 9/10
10:35 pm-8:30 am
Nonstop5h 55m
Reykjavik Keflavik Intl
Wed 9/16
9:15 am-11:13 am
1 stop29h 58m
$504
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Fri 9/11
10:35 pm-8:30 am
Nonstop5h 55m
Reykjavik Keflavik Intl
Fri 9/18
9:15 am-3:00 pm
1 stop9h 45m
$504
Washington, D.C.Reykjavik
IAD Washington, D.C. Dulles Intl - KEF Reykjavik Keflavik Intl
IADKEF
Washington, D.C. Dulles Intl
Fri 9/18
10:35 pm-8:30 am
Nonstop5h 55m
Reykjavik Keflavik Intl
Mon 9/21
10:00 am-7:43 am
2 stops25h 43m
$508
Showing 1-10 of 18 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 2, 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 2, 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.
Overall
7.4
Comfort
7.3
Entertainment
7.1
Crew
8.1
Boarding
7.7
Food
6.6
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
IAD - TYS
Overall
7.4
Comfort
7.3
Entertainment
7.1
Crew
8.1
Boarding
7.7
Food
6.6
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
IAD - TYS
Overall
7.4
Comfort
7.3
Entertainment
7.1
Crew
8.1
Boarding
7.7
Food
6.6
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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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 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$359 | Average$614 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$499 | Average$819 | FlexibilityNo cancel fee | On-time69% |