Keflavik International (KEF) to Heathrow (LHR).
| Departure | Return | Price |
|---|---|---|
| 06/13/2026 | 06/19/2026 | $201 |
| 06/13/2026 | 06/22/2026 | $212 |
| 06/19/2026 | 06/27/2026 | $225 |
| 06/13/2026 | 06/21/2026 | $229 |
| 06/19/2026 | 06/26/2026 | $230 |
| 06/13/2026 | 06/20/2026 | $233 |
| 06/15/2026 | 06/22/2026 | $236 |
| 07/04/2026 | 07/10/2026 | $244 |
| 06/19/2026 | 06/28/2026 | $245 |
| 05/24/2026 | 05/31/2026 | $246 |
Based on current fares, June is the cheapest month to fly from Reykjavik to London, with average fares around $339 round trip (as low as $201).
See the full month-by-month and day-of-week price analysis
Best Time to Fly KEF → LHRDeparture date prices (economy, round trip). Green = cheap, red = expensive.
The cheapest month to fly from Reykjavik to London is June, with average round-trip fares around $339. Fares in June start as low as $201. The most expensive month is August, averaging $398.
A nonstop flight from Reykjavik to London takes approximately 3h.
The cheapest flight from Reykjavik to London currently starts at $201 round trip in economy class.
The average round-trip flight price from Reykjavik to London is $403 in economy class.
The distance is 1183 miles (1903 km). with a nonstop flight time of about 3h. The lowest fare currently available is $201 departing in June. The average round-trip fare is $403.
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