£190 Cheap Flights from Seattle (SEA) to Reykjavik (KEF)

Popular airlines from Seattle-Tacoma International Airport (SEA) to Keflavik International Airport (KEF)

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Cheap Flights from Seattle (SEA) to Reykjavik (KEF)

Prices were available within the past 7 days and start at £190 for one-way flights and £331 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Icelandair
Virgin Atlantic
Virgin Atlantic
Icelandair
Icelandair
Virgin Atlantic
Air France
KLM
Lufthansa

Find the cheapest month to fly from Seattle (SEA) to Reykjavik (KEF)

September is typically the cheapest month to fly

From £289 - £681 per traveller.

Graph displaying average flight prices per month

Flight from Seattle to Reykjavik route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Keflavik Intl.
Airlines serving
Air Canada, Air France, British Airways, Brussels Airlines, Finnair, Icelandair, KLM, Lufthansa, Virgin Atlantic, WestJet
Return price
£330
Distance
5776 km
Average flight time
14 hours 28 mins

Compare flights from Seattle to Reykjavik easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Seattle to Reykjavik. Operating between them 6 flights per day, 20 airlines cover the route. And Alaska Airlines, Icelandair fly direct, getting you to Keflavik Intl. in just 21hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Seattle - Tacoma Intl. to Keflavik Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Seattle - Tacoma Intl. (SEA) to Keflavik Intl. (KEF)

The easiest way to view the best deals on flights from Seattle to Reykjavik today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Seattle - Tacoma Intl. to Keflavik Intl. start at just £331 and range up to £409.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Seattle and Reykjavik
  • booking your flight during February, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Seattle to Reykjavik flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Seattle - Tacoma Intl. to Keflavik Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from Sea-Tac Airport to Reykjavík–Keflavík Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip flight from SEA to Reykjavík–Keflavík Airport was £331. Fares this good don't last long, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from SEA to Keflavik Intl. Airport (KEF)?
Each air carrier has its own terms and conditions. If you do decide to cancel, follow the instructions on our Customer Service Portal.
How do I find cheap flights from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Sea-Tac Airport to KEF flights, you'll see a "no change fees" filter for you to select.
How far is the flight from SEA to Reykjavík–Keflavík Airport?
With a flight distance of 5,800 kilometres between Sea-Tac Airport and Keflavik Intl. Airport (KEF), this is a long-haul flight. Make sure you stay hydrated and move your legs from time to time.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF)?
Check out Icelandair (FI) if you want to fly directly from Seattle - Tacoma Intl. Airport (SEA) to KEF. This top airline operates 30 flights monthly, so you're sure to find one that fits your travel plans.
Are Sea-Tac Airport to Reykjavík–Keflavík Airport flight tickets cheaper when they're purchased at the last minute?
It is possible to pick up an awesome last-minute deal from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF), but it can also be hit-or-miss. As many airlines release seats up to 12 months in advance, it's worth keeping an eye on fares early and being ready to book when you spot a bargain. Expedia compares air carrier prices and updates flight deals often, so you can be certain you're always getting the latest offers.

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