Icelandair Flight FI450 Deals & Information (2025/2026)

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Icelandair Flight 450 Route Deals From $250

The cheapest prices found with in the last 7 days for return flights were $239 and $250 for one-way flights to Heathrow for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jan 7 - Wed, Jan 14
KEF
Keflavik Intl.
LHR
Heathrow
$239 Roundtrip, found 4 days ago
$239
Roundtrip
found 4 days ago
Select Icelandair flight, departing Wed, Jan 7 from Keflavik Intl. to Heathrow, returning Wed, Jan 14, priced at $239 found 4 days ago

Frequently asked questions

What route does flight number FI450 take?
Flight number FI450 takes around 3 hours and 15 minutes to jet directly from Reykjavík–Keflavík Airport to Heathrow Airport (LHR). Sure, there's magic in the destination, but half the fun is in the journey!
What kind of plane is on flight number FI450?
There's a good chance you'll be traveling aboard the Boeing 767-300 if you're on flight FI450. Generally, this flight leaves from Reykjavík–Keflavík Airport and comes in to land at London Airport (LHR-Heathrow).
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 FI450 flight with Travelocity, please visit our Customer Service Portal.