Icelandair Flight FI645 Deals & Information (2024/2025)

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Icelandair Flight 645 Route Deals From $403

The cheapest prices found with in the last 7 days for return flights were $503 and $403 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Aug 5 - Sun, Aug 11
KEF
Keflavik Intl.
IAD
Washington Dulles Intl.
$503 Roundtrip, found 1 day ago
$503
Roundtrip
found 1 day ago
Select Icelandair flight, departing Mon, Aug 5 from Keflavik Intl. to Washington Dulles Intl., returning Sun, Aug 11, priced at $503 found 1 day ago
Tue, Jun 11 - Wed, Jul 31
KEF
Keflavik Intl.
IAD
Washington Dulles Intl.
$513 Roundtrip, found 1 day ago
$513
Roundtrip
found 1 day ago
Select Icelandair flight, departing Tue, Jun 11 from Keflavik Intl. to Washington Dulles Intl., returning Wed, Jul 31, priced at $513 found 1 day ago
Tue, Jun 25 - Sun, Jun 30
KEF
Keflavik Intl.
IAD
Washington Dulles Intl.
$513 Roundtrip, found 17 hours ago
$513
Roundtrip
found 17 hours ago
Select Icelandair flight, departing Tue, Jun 25 from Keflavik Intl. to Washington Dulles Intl., returning Sun, Jun 30, priced at $513 found 17 hours ago
Fri, Nov 8 - Sun, Nov 17
KEF
Keflavik Intl.
IAD
Washington Dulles Intl.
$523 Roundtrip, found 9 hours ago
$523
Roundtrip
found 9 hours ago
Select Icelandair flight, departing Fri, Nov 8 from Keflavik Intl. to Washington Dulles Intl., returning Sun, Nov 17, priced at $523 found 9 hours ago

Frequently asked questions

What route does flight number FI645 take?
Flight number FI645 flies non-stop from Reykjavik Airport (KEF-Keflavik Intl.) to Washington, DC Airport (IAD-Washington Dulles Intl.). During this journey, you can expect to be in the air for 6 hours and 20 minutes. Book ahead to get your preferred seat.
What kind of plane is on flight number FI645?
The route for flight number FI645 is almost always KEF to Washington, DC Airport (IAD-Washington Dulles Intl.), and the Boeing 767-300 is the type of aircraft you’ll probably be flying on.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your FI645 flight with Travelocity, please visit our Customer Service Portal.