$172+ Cheap flights from Keflavik Intl (KEF) to Heathrow (LHR)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
KEF — LHR
Aug 1 — Aug 81
Round-trip
1 adult, Economy
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Cheapest flights from Keflavik Intl to HeathrowExplore the most affordable flight options available from Keflavik Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2026.
Explore the most affordable flight options available from Keflavik Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2026.
This Booking.com deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:25 pm
KEF
- LHR
1 stop14h 10m
Scandinavian Airlines
Thu 8/135:30 pm
LHR
- KEF
1 stop14h 35m
Scandinavian Airlines
Deal found 6/27![Scandinavian Airlines logo]()
$234
This KLM deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:45 pm
KEF
- LHR
1 stop18h 15m
KLM
Wed 12/98:25 pm
LHR
- KEF
1 stop17h 20m
KLM
Deal found 6/30![KLM logo]()
$235
This Gotogate deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/211:30 am
KEF
- LHR
1 stop22h 05m
Multiple Airlines
Wed 12/98:35 pm
LHR
- KEF
Nonstop3h 15m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$243
This Scandinavian Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:00 pm
KEF
- LHR
1 stop12h 35m
Scandinavian Airlines
Wed 8/127:50 pm
LHR
- KEF
1 stop15h 35m
Scandinavian Airlines
Deal found 6/29![Scandinavian Airlines logo]()
$246
This Trip.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:45 am
KEF
- LHR
1 stop10h 50m
Scandinavian Airlines
Sun 8/236:40 am
LHR
- KEF
1 stop27h 35m
Scandinavian Airlines
Deal found 6/30![Scandinavian Airlines logo]()
$249
This KLM deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:45 pm
KEF
- LHR
1 stop16h 55m
KLM
Thu 12/106:30 am
LHR
- KEF
1 stop7h 15m
KLM
Deal found 6/30![KLM logo]()
$250
This Mytrip deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:35 pm
KEF
- LHR
1 stop14h 00m
Scandinavian Airlines
Sat 9/1910:35 am
LHR
- KEF
1 stop8h 10m
Scandinavian Airlines
Deal found 7/2![Scandinavian Airlines logo]()
$254
This Gotogate deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:05 pm
KEF
- LHR
1 stop21h 55m
Multiple Airlines
Sun 11/18:35 pm
LHR
- KEF
Nonstop3h 15m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$260
This Scandinavian Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/185:05 pm
KEF
- LHR
1 stop15h 15m
Scandinavian Airlines
Sat 9/263:35 pm
LHR
- KEF
1 stop19h 15m
Scandinavian Airlines
Deal found 6/28![Scandinavian Airlines logo]()
$262
This Trip.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/96:00 pm
KEF
- LHR
1 stop26h 40m
Scandinavian Airlines
Tue 8/187:50 pm
LHR
- KEF
1 stop16h 25m
Scandinavian Airlines
Deal found 6/28![Scandinavian Airlines logo]()
$263
This Booking.com deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:35 pm
KEF
- LHR
1 stop21h 25m
Scandinavian Airlines
Sun 8/306:40 pm
LHR
- KEF
1 stop16h 00m
Scandinavian Airlines
Deal found 6/27![Scandinavian Airlines logo]()
$264
Best flights from Keflavik Intl to HeathrowDiscover carefully curated flight deals from Keflavik Intl to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 2, 2026.
Discover carefully curated flight deals from Keflavik Intl to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 2, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/185:05 pm
KEF
- LHR
1 stop15h 15m
Scandinavian Airlines
Sat 9/263:35 pm
LHR
- KEF
1 stop19h 15m
Scandinavian Airlines
Deal found 6/28![Scandinavian Airlines logo]()
$262
This KLM deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:00 pm
KEF
- LHR
1 stop12h 00m
KLM
Wed 9/238:40 am
LHR
- KEF
1 stop11h 20m
KLM
Deal found 7/2![KLM logo]()
$294
This Icelandair deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:40 am
KEF
- LHR
Nonstop3h 15m
Icelandair
Sat 10/249:25 pm
LHR
- KEF
Nonstop3h 10m
Icelandair
Deal found 7/1![Icelandair logo]()
$449
This ITA Airways deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ITA Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:10 am
KEF
- LHR
1 stop17h 30m
Multiple Airlines
Wed 10/71:35 pm
LHR
- KEF
2 stops10h 50m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$458
This KLM deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/96:35 pm
KEF
- LHR
1 stop15h 10m
KLM
Tue 8/187:15 pm
LHR
- KEF
2 stops16h 10m
KLM
Deal found 6/28![KLM logo]()
$375
This KLM deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:00 pm
KEF
- LHR
1 stop12h 00m
KLM
Wed 10/218:55 pm
LHR
- KEF
2 stops14h 30m
KLM
Deal found 6/28![KLM logo]()
$430
This Icelandair deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/237:40 am
KEF
- LHR
Nonstop3h 15m
Icelandair
Tue 8/49:25 pm
LHR
- KEF
Nonstop3h 10m
Icelandair
Deal found 7/2![Icelandair logo]()
$484
This Icelandair deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:40 am
KEF
- LHR
Nonstop3h 15m
Icelandair
Tue 8/259:25 pm
LHR
- KEF
Nonstop3h 10m
Icelandair
Deal found 6/30![Icelandair logo]()
$497
This KLM deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:35 pm
KEF
- LHR
1 stop12h 05m
KLM
Thu 8/136:30 am
LHR
- KEF
2 stops12h 05m
KLM
Deal found 6/27![KLM logo]()
$469
This KLM deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:15 pm
KEF
- LHR
1 stop12h 45m
KLM
Mon 9/288:55 pm
LHR
- KEF
2 stops14h 30m
KLM
Deal found 6/29![KLM logo]()
$510
Last-minute flights from Keflavik Intl to HeathrowDiscover last-minute flight deals from Keflavik Intl to Heathrow. Data last updated July 2, 2026 and is based on user searches.
Discover last-minute flight deals from Keflavik Intl to Heathrow. Data last updated July 2, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/72:10 pm
KEF
- LHR
1 stop7h 00m
Multiple Airlines
Fri 7/106:00 am
LHR
- KEF
1 stop18h 20m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$351
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/912:10 am
KEF
- LHR
1 stop20h 30m
Multiple Airlines
Fri 7/178:05 pm
LHR
- KEF
1 stop13h 25m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$368
This Kiwi.com deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/912:10 am
KEF
- LHR
1 stop10h 15m
Austrian Airlines
Mon 7/139:05 am
LHR
- KEF
1 stop15h 15m
Austrian Airlines
Deal found 6/27![Austrian Airlines logo]()
$405
This Kiwi.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/912:10 am
KEF
- LHR
1 stop20h 30m
Austrian Airlines
Sun 7/199:05 am
LHR
- KEF
1 stop15h 15m
Austrian Airlines
Deal found 6/30![Austrian Airlines logo]()
$424
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1012:30 pm
KEF
- LHR
2 stops29h 50m
SWISS
Fri 7/178:05 pm
LHR
- KEF
1 stop13h 25m
SWISS
Deal found 7/1![SWISS logo]()
$328
This Super.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1012:30 pm
KEF
- LHR
2 stops29h 50m
Multiple Airlines
Mon 7/136:00 am
LHR
- KEF
1 stop18h 20m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$369
This Super.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1012:30 pm
KEF
- LHR
2 stops26h 55m
Multiple Airlines
Sun 7/126:00 am
LHR
- KEF
1 stop18h 20m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$372
This Mytrip deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1012:30 pm
KEF
- LHR
2 stops26h 55m
Multiple Airlines
Tue 7/286:00 am
LHR
- KEF
1 stop18h 20m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$407
This Booking.com deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/119:15 am
KEF
- LHR
1 stop9h 05m
SWISS
Fri 7/178:05 pm
LHR
- KEF
1 stop13h 25m
SWISS
Deal found 6/27![SWISS logo]()
$331
This FlightHub deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/119:15 am
KEF
- LHR
2 stops11h 55m
Multiple Airlines
Fri 7/178:05 pm
LHR
- KEF
1 stop13h 25m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$360
One-way flights from Keflavik Intl to HeathrowSearch for one-way flight options from Keflavik Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated July 2, 2026.
Search for one-way flight options from Keflavik Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated July 2, 2026.
This Travelocity deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/299:10 pm
KEF
- LHR
1 stop11h 00m
Iberia
Deal found 7/1![Iberia logo]()
$172
This FlightHub deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:15 am
KEF
- LHR
1 stop21h 20m
Scandinavian Airlines
Deal found 6/28![Scandinavian Airlines logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/291:10 am
KEF
- LHR
1 stop12h 05m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$174
This Expedia deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/165:35 pm
KEF
- LHR
1 stop23h 05m
Scandinavian Airlines
Deal found 7/2![Scandinavian Airlines logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2911:50 pm
KEF
- LHR
1 stop8h 30m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$178
This Scandinavian Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/286:30 pm
KEF
- LHR
1 stop15h 05m
Scandinavian Airlines
Deal found 6/30![Scandinavian Airlines logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/145:45 pm
KEF
- LHR
2 stops14h 50m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$182
This KLM deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/252:45 pm
KEF
- LHR
1 stop16h 55m
KLM
Deal found 6/28![KLM logo]()
$184
This Scandinavian Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2112:10 pm
KEF
- LHR
1 stop20h 25m
Scandinavian Airlines
Deal found 6/28![Scandinavian Airlines logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:25 pm
KEF
- LHR
2 stops14h 55m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$186
This Mytrip deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1911:50 am
KEF
- LHR
2 stops21h 20m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$187
This Booking.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/810:40 am
KEF
- LHR
Nonstop3h 10m
British Airways
Deal found 6/30![British Airways logo]()
$189
Find flight deals from Keflavik Intl to Heathrow
Discover tips and strategies to find the most affordable flight options for your journey from Keflavik Intl (KEF) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $234 (Booking.com) |
One-way from | $172 (Travelocity) |
Popular in | July |
Cheapest in | January |
Average price | $525 |
Good round-trip deal | $534 or less |
Good one-way deal | $282 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Keflavik Intl to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 2, 2026.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to London Heathrow Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ReykjavikLondon
KEF - LHR
KEFLHR
Reykjavik Keflavik Intl
Fri 9/18
5:05 pm-9:20 am
1 stop15h 15m
London Heathrow
Sat 9/26
3:35 pm-9:50 am
1 stop19h 15m
$262
ReykjavikLondon
KEF - LHR
KEFLHR
Reykjavik Keflavik Intl
Wed 9/16
8:00 pm-9:00 am
1 stop12h 00m
London Heathrow
Wed 9/23
8:40 am-7:00 pm
1 stop11h 20m
$294
ReykjavikLondon
KEF - LHR
KEFLHR
Reykjavik Keflavik Intl
Sun 8/9
6:35 pm-10:45 am
1 stop15h 10m
London Heathrow
Tue 8/18
7:15 pm-10:25 am
2 stops16h 10m
$375
ReykjavikLondon
KEF - LHR
KEFLHR
Reykjavik Keflavik Intl
Wed 10/14
8:00 pm-9:00 am
1 stop12h 00m
London Heathrow
Wed 10/21
8:55 pm-10:25 am
2 stops14h 30m
$430
Quickest round-trip
ReykjavikLondon
KEF - LHR
KEFLHR
Reykjavik Keflavik Intl
Mon 10/19
7:40 am-11:55 am
Nonstop3h 15m
London Heathrow
Sat 10/24
9:25 pm-11:35 pm
Nonstop3h 10m
$449
ReykjavikLondon
KEF - LHR
KEFLHR
Reykjavik Keflavik Intl
Tue 9/29
12:10 am-6:40 pm
1 stop17h 30m
London Heathrow
Wed 10/7
1:35 pm-11:25 pm
2 stops10h 50m
$458
ReykjavikLondon
KEF - LHR
KEFLHR
Reykjavik Keflavik Intl
Fri 8/7
6:35 pm-7:40 am
1 stop12h 05m
London Heathrow
Thu 8/13
6:30 am-5:35 pm
2 stops12h 05m
$469
ReykjavikLondon
KEF - LHR
KEFLHR
Reykjavik Keflavik Intl
Thu 7/23
7:40 am-11:55 am
Nonstop3h 15m
London Heathrow
Tue 8/4
9:25 pm-11:35 pm
Nonstop3h 10m
$484
ReykjavikLondon
KEF - LHR
KEFLHR
Reykjavik Keflavik Intl
Tue 8/18
7:40 am-11:55 am
Nonstop3h 15m
London Heathrow
Tue 8/25
9:25 pm-11:35 pm
Nonstop3h 10m
$497
ReykjavikLondon
KEF - LHR
KEFLHR
Reykjavik Keflavik Intl
Thu 9/24
7:15 pm-9:00 am
1 stop12h 45m
London Heathrow
Mon 9/28
8:55 pm-10:25 am
2 stops14h 30m
$510
Showing 1-10 of 20 resultsSorted by cheapest first
- Most accurate provider: When it comes to deals on Reykjavik Keflavik Intl Airport-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Reykjavik Keflavik Intl Airport-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Reykjavik Keflavik Intl Airport-London Heathrow Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Reykjavik Keflavik Intl Airport-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Reykjavik Keflavik Intl Airport-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Keflavik Intl to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from Keflavik Intl with our price prediction graph.
KEF-LHR
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Reykjavik Keflavik Intl Airport to London Heathrow Airport
Prices
Airlines
Delays
How often are flights from Reykjavik to London delayed?
About 8% of weekly flights between Reykjavik and London have experienced delays in the past year, with the average delay time being 123 minutes.
What is the most punctual flight time for Reykjavik to London flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Reykjavik to London flights?
Over the last year, Icelandair have had the lowest number of delays on this route, with just 7% of flights being delayed.
Reviews of airlines servicing Heathrow
Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated July 2, 2026.
Peruse reviews from past customers who have flown with Icelandair from Reykjavik Keflavik Intl Airport to London Heathrow Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
6.9
Overall
7.0
Boarding
7.2
Comfort
6.9
Crew
8.0
Food
6.2
Reviews
1 / 20
2.0
MediocreAlbert,Jun 2026
KEF - ZRH
Entertainment
6.9
Overall
7.0
Boarding
7.2
Comfort
6.9
Crew
8.0
Food
6.2
Reviews
1 / 20
2.0
MediocreAlbert,Jun 2026
KEF - ZRH
Related info for your journey
Find useful and relevant information for your journey from Keflavik Intl to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near London Heathrow Airport?
Book flights to London Heathrow Airport if you plan to visit one of these locationsIlford
Dorking
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Wembley
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough
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Top airline flying from Keflavik Intl to Heathrow
Discover the top airline that operate flights from Keflavik Intl to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$244 | Average$410 | FlexibilityNo cancel fee | On-time76% |