Icelandair Flight 450 Deals & Information (2026/2027)

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Icelandair Flight 450 Route Deals From $171

The cheapest prices found with in the last 7 days for return flights were $281 and $171 for one-way flights to Heathrow for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Oct 7 - Sat, Oct 10
KEF
Keflavik Intl.
LHR
Heathrow
$281 Roundtrip, found 6 days ago
$281
Roundtrip
found 6 days ago
Select Icelandair flight, departing Wed, Oct 7 from Keflavik Intl. to Heathrow, returning Sat, Oct 10, priced at $281 found 6 days ago
Mon, May 18 - Sun, May 31
KEF
Keflavik Intl.
LHR
Heathrow
$331 Roundtrip, found 1 hour ago
$331
Roundtrip
found 1 hour ago
Select Icelandair flight, departing Mon, May 18 from Keflavik Intl. to Heathrow, returning Sun, May 31, priced at $331 found 1 hour ago
Mon, May 18 - Sun, May 31
KEF
Keflavik Intl.
LHR
Heathrow
$353 Roundtrip, found 1 hour ago
$353
Roundtrip
found 1 hour ago
Select Icelandair flight, departing Mon, May 18 from Keflavik Intl. to Heathrow, returning Sun, May 31, priced at $353 found 1 hour ago
Fri, Jun 26 - Tue, Jul 7
KEF
Keflavik Intl.
LHR
Heathrow
$409 Roundtrip, just found
$409
Roundtrip
just found
Select Icelandair flight, departing Fri, Jun 26 from Keflavik Intl. to Heathrow, returning Tue, Jul 7, priced at $409 just found
Fri, Jun 26 - Tue, Jul 7
KEF
Keflavik Intl.
LHR
Heathrow
$433 Roundtrip, just found
$433
Roundtrip
just found
Select Icelandair flight, departing Fri, Jun 26 from Keflavik Intl. to Heathrow, returning Tue, Jul 7, priced at $433 just found

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.