Icelandair Flight BA455 Deals & Information (2025/2026)

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Icelandair Flight 455 Route Deals From $156

The cheapest prices found with in the last 7 days for return flights were $206 and $156 for one-way flights to Keflavik Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Nov 6 - Thu, Nov 13
LHR
Heathrow
KEF
Keflavik Intl.
$206 Roundtrip, found 2 days ago
$206
Roundtrip
found 2 days ago
Select Icelandair flight, departing Thu, Nov 6 from Heathrow to Keflavik Intl., returning Thu, Nov 13, priced at $206 found 2 days ago
Fri, Apr 24 - Wed, Apr 29
LHR
Heathrow
KEF
Keflavik Intl.
$211 Roundtrip, found 5 days ago
$211
Roundtrip
found 5 days ago
Select Icelandair flight, departing Fri, Apr 24 from Heathrow to Keflavik Intl., returning Wed, Apr 29, priced at $211 found 5 days ago
Mon, Nov 3 - Fri, Nov 7
LHR
Heathrow
KEF
Keflavik Intl.
$212 Roundtrip, found 10 hours ago
$212
Roundtrip
found 10 hours ago
Select Icelandair flight, departing Mon, Nov 3 from Heathrow to Keflavik Intl., returning Fri, Nov 7, priced at $212 found 10 hours ago
Fri, Mar 6 - Wed, Mar 11
LHR
Heathrow
KEF
Keflavik Intl.
$220 Roundtrip, found 4 days ago
$220
Roundtrip
found 4 days ago
Select Icelandair flight, departing Fri, Mar 6 from Heathrow to Keflavik Intl., returning Wed, Mar 11, priced at $220 found 4 days ago
Thu, Oct 2 - Thu, Oct 9
LHR
Heathrow
KEF
Keflavik Intl.
$225 Roundtrip, found 22 hours ago
$225
Roundtrip
found 22 hours ago
Select Icelandair flight, departing Thu, Oct 2 from Heathrow to Keflavik Intl., returning Thu, Oct 9, priced at $225 found 22 hours ago
Sun, May 17 - Fri, May 22
LHR
Heathrow
KEF
Keflavik Intl.
$228 Roundtrip, found 20 hours ago
$228
Roundtrip
found 20 hours ago
Select Icelandair flight, departing Sun, May 17 from Heathrow to Keflavik Intl., returning Fri, May 22, priced at $228 found 20 hours ago
Thu, Nov 20 - Mon, Nov 24
LHR
Heathrow
KEF
Keflavik Intl.
$236 Roundtrip, found 5 days ago
$236
Roundtrip
found 5 days ago
Select Icelandair flight, departing Thu, Nov 20 from Heathrow to Keflavik Intl., returning Mon, Nov 24, priced at $236 found 5 days ago
Fri, Apr 24 - Wed, Apr 29
LHR
Heathrow
KEF
Keflavik Intl.
$239 Roundtrip, found 5 days ago
$239
Roundtrip
found 5 days ago
Select Icelandair flight, departing Fri, Apr 24 from Heathrow to Keflavik Intl., returning Wed, Apr 29, priced at $239 found 5 days ago
Mon, Mar 2 - Mon, Mar 9
LHR
Heathrow
KEF
Keflavik Intl.
$240 Roundtrip, found 4 days ago
$240
Roundtrip
found 4 days ago
Select Icelandair flight, departing Mon, Mar 2 from Heathrow to Keflavik Intl., returning Mon, Mar 9, priced at $240 found 4 days ago
Wed, Nov 19 - Mon, Nov 24
LHR
Heathrow
KEF
Keflavik Intl.
$242 Roundtrip, found 5 days ago
$242
Roundtrip
found 5 days ago
Select Icelandair flight, departing Wed, Nov 19 from Heathrow to Keflavik Intl., returning Mon, Nov 24, priced at $242 found 5 days ago
Thu, Dec 11 - Sun, Dec 14
LHR
Heathrow
KEF
Keflavik Intl.
$243 Roundtrip, found 3 days ago
$243
Roundtrip
found 3 days ago
Select Icelandair flight, departing Thu, Dec 11 from Heathrow to Keflavik Intl., returning Sun, Dec 14, priced at $243 found 3 days ago
Sun, Oct 5 - Thu, Oct 9
LHR
Heathrow
KEF
Keflavik Intl.
$245 Roundtrip, found 13 hours ago
$245
Roundtrip
found 13 hours ago
Select Icelandair flight, departing Sun, Oct 5 from Heathrow to Keflavik Intl., returning Thu, Oct 9, priced at $245 found 13 hours ago
Wed, Nov 26 - Sat, Nov 29
LHR
Heathrow
KEF
Keflavik Intl.
$250 Roundtrip, found 1 day ago
$250
Roundtrip
found 1 day ago
Select Icelandair flight, departing Wed, Nov 26 from Heathrow to Keflavik Intl., returning Sat, Nov 29, priced at $250 found 1 day ago
Mon, Nov 17 - Mon, Nov 24
LHR
Heathrow
KEF
Keflavik Intl.
$253 Roundtrip, found 1 day ago
$253
Roundtrip
found 1 day ago
Select Icelandair flight, departing Mon, Nov 17 from Heathrow to Keflavik Intl., returning Mon, Nov 24, priced at $253 found 1 day ago
Tue, May 19 - Thu, May 28
LHR
Heathrow
KEF
Keflavik Intl.
$255 Roundtrip, found 14 hours ago
$255
Roundtrip
found 14 hours ago
Select Icelandair flight, departing Tue, May 19 from Heathrow to Keflavik Intl., returning Thu, May 28, priced at $255 found 14 hours ago
Fri, Oct 10 - Tue, Oct 14
LHR
Heathrow
KEF
Keflavik Intl.
$255 Roundtrip, found 1 hour ago
$255
Roundtrip
found 1 hour ago
Select Icelandair flight, departing Fri, Oct 10 from Heathrow to Keflavik Intl., returning Tue, Oct 14, priced at $255 found 1 hour 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.