Boston BOS Copenhagen Copenhagen CPH Iceland Icelandair London London Gatwick LGW Oslo Oslo OSL Paris Paris Charles de Gaulle Airport CDG Stockholm ARN Stockholm Sweden

Icelandair Boston to London $388, Copenhagen $348, Oslo $356, Stockholm $392, Paris $487

Icelandair has put Boston to Europe on sale for several cities during January to March 2017. Probably the best deal is $388 round trip to London LGW. Fares range from $348 to Copenhagen, Denmark; $356 to Oslo, Norway and $392 to Stockholm, Sweden for nearly every date January 5 to March 31. Paris for $487 is also a great price, but Paris seems to be on sale frequently these days.

Icelandair  Boston BOS – Reykjavik, Iceland KEF – London Gatwick LGW

$388.25 round trip  Fri Feb 10 – Sun Feb 19

BOS-LGW $388 FI Feb 8-17

Icelandair operates like a legacy carrier with free carry-on, free checked bag and no charge for seat assignment. On top of that is the option to book a near free stopover in Iceland when booking your ticket. Winter tends to be a better time for seeing the aurora borealis-northern lights in Iceland.

Boston to London Iceland Stopover Ticket

Icelandair  Boston BOS – Reykjavik, Iceland KEF (4 night stopover) – London Gatwick LGW (7 nights) – KEF – Boston BOS

$404.27 round trip  Mon Feb 6 – Sun Feb 19

BOS-KEF-LGW $404 FI Feb 6-19

Ticket price increases $16 from $388 to $404 when you add a stopover in Iceland. My searches for stopover tickets this past year show a fare increase of $5 to $20 when an Iceland stopover is added to the ticket.

Iceland row

Keflavik Airport, Iceland (July 2015). I flew WOW from Boston, unfortunately before they also allowed free stopovers in Iceland.