Frankfurt FRA Germany Iceland Icelandair London London Gatwick LGW Norwegian Air Reykjavik Iceland KEF Seattle Seattle SEA Airport

Icelandair $484 Seattle to London, $551 Frankfurt Oct-Dec 2017

Norwegian has nonstop flights from Seattle to London Gatwick LGW for $433 round trip. But add another $90 each way, if you want a checked bag, assigned seat and meals or $45 if you want any single one of these paid extras.

Icelandair has Seattle to LGW at $484 round trip or $551 to Frankfurt for travel October to December 2017. Icelandair tickets include checked bag and free self-selected seat and non-alcohol beverages.

Food on Icelandair flights is extra and can be pre-ordered online or purchased on board.

A stopover in Iceland can be added for as little as $10 to $20 more.

Icelandair   Seattle SEA – Keflavik KEF – London Gatwick LGW – KEF – SEA

$484.19 round trip  Thu Oct 19 – Fri Nov 3

SEA-LGW $484 FI Oct

Icelandair   Seattle SEA – Keflavik KEF – Frankfurt, Germany FRA – KEF – SEA

$551.53 round trip  Sat Oct 28 – Fri Nov 3

SEA-FRA $552 FI Oct28-Nov3

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