July is the cheapest month to fly this route, with average fares around $507 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $552 | $457 | ||
| June 2026 | $511 | $457 | ||
| July 2026 | $507 | $487 | Best | |
| August 2026 | $582 | $487 | Peak |
Departing on Monday offers the lowest average fares at $475. Friday departures are the most expensive at $582, a difference of $107.
The best time to fly is July. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Boston to Reykjavik is July, with average round-trip fares around $507. The lowest fare found in July is $487.
Monday departures are the cheapest, averaging $475 round trip. The most expensive day is Friday at $582.
Based on current pricing trends, booking for July travel offers the best value. Avoid August if possible, as fares average $582 compared to $507 in the cheapest month. May is a solid middle-ground option at $552.
Flying in July instead of August can save you approximately $75 per round trip. The cheapest month averages $507 while the most expensive averages $582.
Airlines, flight times, price calendar, and more for Boston to Reykjavik
View BOS → KEF Details