Direct (nonstop) flights from Seattle to Reykjavik
2 airlines fly nonstop from Seattle Tacoma International (SEA) to Keflavík International Airport (KEF). It's 3,621 miles (5,828 km), about 7h 35m in the air. Operated by Alaska Airlines, Icelandair.
Alaska Airlines
Icelandair
Route data last updated: May 26, 2026
Airlines with non-stop flights
AS
Alaska Airlines
Alternative Routes
Other ways to fly from Seattle to Reykjavik with one stop · direct emits 554 kg CO₂ per passenger
Looking for the return flight?
KEF → SEA: Flights from Reykjavik to SeattleOther direct flights from Seattle
Direct flights from Reykjavik (KEF)
Frequently Asked Questions
How long is the direct flight from Seattle to Reykjavik?
A nonstop flight from Seattle (SEA) to Reykjavik (KEF) takes approximately 7 hours and 35 minutes. The distance is 3,621 miles (5,828 km).
Which airlines fly nonstop from Seattle to Reykjavik?
2 airlines: Alaska Airlines, Icelandair.
Is there a nonstop flight from Seattle to Reykjavik?
Yes. 2 airlines: Alaska Airlines, Icelandair.
How far is Seattle from Reykjavik?
The flight distance from Seattle to Reykjavik is 3,621 miles (5,828 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as London to New York.
What is the time difference between Seattle and Reykjavik?
Reykjavik is 7 hours ahead of Seattle. (America/Los_Angeles vs Atlantic/Reykjavik.)
Will I experience jet lag flying from Seattle to Reykjavik?
Probably — 7-hour time difference means moderate jet lag. Expect about 1 day of adjustment per hour of shift. Flying eastward is generally harder to adjust to.
What type of aircraft flies from Seattle to Reykjavik?
At 7h 35m, this route typically uses wide-body aircraft — Boeing 777, 787, or Airbus A330/A350. Varies by airline.
Do I need a visa to travel from USA to Iceland?
Depends on your passport. Check with the Iceland embassy or an official visa portal before booking — requirements change.
What is the carbon footprint of a flight from Seattle to Reykjavik?
Roughly 554 kg CO2 per passenger one-way. That's about the same as driving 2,770 km.
Is the return flight from Reykjavik to Seattle also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Seattle to Reykjavik?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. For long-haul, booking 2-3 months out tends to help. Use "Check Prices" above to compare.
How early should I arrive at Seattle Tacoma International for this flight?
3 hours before departure for international flights. You need time for check-in, security, and immigration.