June is the cheapest month to fly this route, with average fares around $339 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $357 | $246 | ||
| June 2026 | $339 | $201 | Best | |
| July 2026 | $372 | $244 | ||
| August 2026 | $398 | $350 | Peak |
Departing on Monday offers the lowest average fares at $336. Thursday departures are the most expensive at $399, a difference of $63.
The best time to fly is June. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Reykjavik to London is June, with average round-trip fares around $339. The lowest fare found in June is $201.
Monday departures are the cheapest, averaging $336 round trip. The most expensive day is Thursday at $399.
Based on current pricing trends, booking for June travel offers the best value. Avoid August if possible, as fares average $398 compared to $339 in the cheapest month. July is a solid middle-ground option at $372.
Flying in June instead of August can save you approximately $59 per round trip. The cheapest month averages $339 while the most expensive averages $398.
Airlines, flight times, price calendar, and more for Reykjavik to London
View KEF → LHR Details