Icelandair Flight BA455 Deals & Information (2025/2026)

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Icelandair Flight 455 Route Deals From $105

The cheapest prices found with in the last 7 days for return flights were $171 and $105 for one-way flights to Keflavik Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Dec 10 - Sun, Dec 14
LHR
Heathrow
KEF
Keflavik Intl.
$171 Roundtrip, found 4 hours ago
$171
Roundtrip
found 4 hours ago
Select Icelandair flight, departing Wed, Dec 10 from Heathrow to Keflavik Intl., returning Sun, Dec 14, priced at $171 found 4 hours ago
Thu, Nov 13 - Sun, Nov 16
LHR
Heathrow
KEF
Keflavik Intl.
$172 Roundtrip, found 2 days ago
$172
Roundtrip
found 2 days ago
Select Icelandair flight, departing Thu, Nov 13 from Heathrow to Keflavik Intl., returning Sun, Nov 16, priced at $172 found 2 days ago
Thu, Dec 4 - Thu, Dec 11
LHR
Heathrow
KEF
Keflavik Intl.
$178 Roundtrip, found 18 hours ago
$178
Roundtrip
found 18 hours ago
Select Icelandair flight, departing Thu, Dec 4 from Heathrow to Keflavik Intl., returning Thu, Dec 11, priced at $178 found 18 hours ago
Wed, Dec 10 - Sun, Dec 14
LHR
Heathrow
KEF
Keflavik Intl.
$178 Roundtrip, found 4 hours ago
$178
Roundtrip
found 4 hours ago
Select Icelandair flight, departing Wed, Dec 10 from Heathrow to Keflavik Intl., returning Sun, Dec 14, priced at $178 found 4 hours ago
Tue, Feb 3 - Sat, Feb 7
LHR
Heathrow
KEF
Keflavik Intl.
$184 Roundtrip, found 18 hours ago
$184
Roundtrip
found 18 hours ago
Select Icelandair flight, departing Tue, Feb 3 from Heathrow to Keflavik Intl., returning Sat, Feb 7, priced at $184 found 18 hours ago
Wed, Dec 10 - Sun, Dec 14
LHR
Heathrow
KEF
Keflavik Intl.
$184 Roundtrip, found 4 hours ago
$184
Roundtrip
found 4 hours ago
Select Icelandair flight, departing Wed, Dec 10 from Heathrow to Keflavik Intl., returning Sun, Dec 14, priced at $184 found 4 hours ago
Thu, Nov 13 - Sun, Nov 16
LHR
Heathrow
KEF
Keflavik Intl.
$186 Roundtrip, found 2 days ago
$186
Roundtrip
found 2 days ago
Select Icelandair flight, departing Thu, Nov 13 from Heathrow to Keflavik Intl., returning Sun, Nov 16, priced at $186 found 2 days ago
Wed, Mar 4 - Mon, Mar 9
LHR
Heathrow
KEF
Keflavik Intl.
$191 Roundtrip, found 1 day ago
$191
Roundtrip
found 1 day ago
Select Icelandair flight, departing Wed, Mar 4 from Heathrow to Keflavik Intl., returning Mon, Mar 9, priced at $191 found 1 day ago
Wed, Mar 4 - Mon, Mar 9
LHR
Heathrow
KEF
Keflavik Intl.
$198 Roundtrip, found 1 day ago
$198
Roundtrip
found 1 day ago
Select Icelandair flight, departing Wed, Mar 4 from Heathrow to Keflavik Intl., returning Mon, Mar 9, priced at $198 found 1 day ago
Thu, Dec 11 - Thu, Dec 18
LHR
Heathrow
KEF
Keflavik Intl.
$200 Roundtrip, just found
$200
Roundtrip
just found
Select Icelandair flight, departing Thu, Dec 11 from Heathrow to Keflavik Intl., returning Thu, Dec 18, priced at $200 just found
Thu, Dec 4 - Thu, Dec 11
LHR
Heathrow
KEF
Keflavik Intl.
$208 Roundtrip, found 18 hours ago
$208
Roundtrip
found 18 hours ago
Select Icelandair flight, departing Thu, Dec 4 from Heathrow to Keflavik Intl., returning Thu, Dec 11, priced at $208 found 18 hours ago
Fri, Nov 21 - Tue, Nov 25
LHR
Heathrow
KEF
Keflavik Intl.
$215 Roundtrip, found 6 hours ago
$215
Roundtrip
found 6 hours ago
Select Icelandair flight, departing Fri, Nov 21 from Heathrow to Keflavik Intl., returning Tue, Nov 25, priced at $215 found 6 hours ago

Frequently asked questions

What route does flight number FI455 take?
Flight number FI455 flies directly from Heathrow Airport (LHR) to Reykjavik Airport (KEF-Keflavik Intl.). During this journey, expect to be in the air for approximately 3 hours and 15 minutes. It pays to book ahead to lock in your favorite seat.
How often is FI455 on time?
Icelandair flight number FI455 between LHR and KEF runs on time 80% of the time — so you can relax knowing that you'll get to your destination ASAP. If the journey happens to be late, you're likely to wait about 18 minutes. This route has a star rating of 3.35.
What terminal does FI455 fly out of?
You'll likely be stepping aboard the plane at Terminal 2 if you're traveling on flight FI455 direct from London Airport (LHR-Heathrow) to KEF.
What kind of plane is on flight number FI455?
Prepare to cruise the skies aboard a Boeing 757-200 if you're booked on flight FI455. Nearly all flights from Heathrow Airport to Reykjavik Airport (KEF-Keflavik Intl.) operate using this type of aircraft.
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 FI455 flight with Travelocity, please visit our Customer Service Portal.