Seattle / Tacoma (SEA) to Reykjavik (Keflavik) (KEF) flight deal in economy from $491

Air CanadaACAir CanadaLufthansaLHLufthansaSwiss International Air LinesLXSwiss International Air LinesAustrian AirlinesOSAustrian AirlinesUnited AirlinesUAUnited Airlines
Round Trip•Economy
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
IcelandKEF

Keflavík International Airport

Reykjavik (Keflavik), Iceland
$1,028 USD
-52%$491 USD
Verified about 3 hours ago
Rare Availability
5% of dates checked are available within 10% of the lowest price

Friday, December 18th, 2026

8 round-trip options

Returning
Wed, Dec 23, 2026•5 Day Trip
$2,611 USD
Google Flights
Returning
Thu, Dec 24, 2026•6 Day Trip
$2,020 USD
Google Flights
Returning
Sat, Dec 26, 2026•8 Day Trip
$2,035 USD
Google Flights
Returning
Sun, Dec 27, 2026•9 Day Trip
$2,508 USD
Google Flights
Returning
Mon, Dec 28, 2026•10 Day Trip
$2,035 USD
Google Flights
Returning
Tue, Dec 29, 2026•11 Day Trip
$2,509 USD
Google Flights
Returning
Wed, Dec 30, 2026•12 Day Trip
$3,253 USD
Google Flights
Returning
Thu, Dec 31, 2026•13 Day Trip
$2,108 USD
Google Flights