The cheapest times to fly from KEF to BOS are

  • January 8th to April 1st (except the week of March 12th)
  • April 16th to April 29th
  • May 14th to July 1st (except the weeks of May 21st, June 11th, and June 18th)
  • August 6th to October 7th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from KEF to BOS is early to mid September. Prices can be as high as $984 for Saturday flights during mid December, or as low as $353 for Monday flights around early to mid September.


When to Fly to Boston

Flying from Keflavik/Reykjavik (KEF) to Boston, MA (BOS) will usually cost between $358 to $511 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid September with an average ticket price of $359. Due to high demand the most expensive time to fly is mid December, with an average price of $699. Planning your trip to low-cost times can easily save you $340 on economy flights and even more on first-class flights. Generally, any price below $422 can be considered a good price for a round-trip KEF to BOS flight.

See below for a graph of average weekly prices for the KEF to BOS route. All prices are for round-trip tickets in USD.

KEF to BOS Flight Prices

Compared to other flights, the KEF to BOS flight is much cheaper than the average and costs less than the average flight leaving from Reykjavík. The average price per mile (for a direct flight) is $0.11, which is far below average.


Flight Prices by Day of the Week

Monday is usually the cheapest day to fly to BOS, and Tuesday the cheapest day to fly back into KEF. Saturdays are the most expensive days to fly to Boston, and Wednesdays are the most expensive days to return to Reykjavík. Selecting flights on the least expensive days could save you up to $72 (14%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Monday and returning a week later will cost an average of $418. Return trip prices are from the BOS to KEF flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from KEF to BOS can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 5 hour 19 minutes may be realistic.


Flight Questions Answered

Still have questions about flying from KEF to BOS? We’ve got answers.

Which airlines fly this route?

You can find 15 major airlines flying this route most often: Air Canada, Air France, American, Austrian, British Airways, Delta, Finnair, Iberia, Icelandair, JetBlue, KLM, Lufthansa, SAS, Singapore Airlines, United, and potentially more during busy seasons.

How far away is it from Logan International Airport to Keflavik International Airport?

The distance between the two airports is roughly 2407 miles or 3874 kilometers.

How long does it take to fly from KEF to BOS?

The real-world flight time for a nonstop KEF to BOS flight is about 5 hour 19 minutes.

How many flights go between Keflavik/Reykjavik and Boston, MA?

It depends on the day of the week and the date, but a typical day might have around 46 available flights from KEF to BOS.


Airport Location Info


Departing Airport

Origination code KEF
Origination airport name Keflavik International Airport
City Keflavik/Reykjavik
Country Iceland
Latitude 64
Longitude -22.6

Return Airport

Destination code BOS
Destination airport name Logan International Airport
City Boston, MA
Country the United States
Latitude 42.4
Longitude -71


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.