Find flights
Deals
Insights
When to book
FAQs & Tips
Direct Flights
Airlines

SEA - KEF

Find cheap flights from Seattle to Reykjavik from C$ 492

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Keflavik Intl departing on 5/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Fri 7/6
Fri 14/6

Search hundreds of travel sites at once for deals on flights to Reykjavik

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Reykjavik, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Reykjavik, as well as popular online travel agencies
In the last 7 days, travellers have searched 43,707,506 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheap flight deals from Seattle to Keflavik Intl (SEA-KEF)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Keflavik Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
11:59 p.m. - 8:30 a.m.SEA-KEF
25h 31m1 stop
10:00 a.m. - 10:00 a.m.KEF-SEA
31h 00m2 stops
C$ 701
Find Deal
Mon, 16 Sep - Mon, 23 Sep
12:30 a.m. - 8:30 a.m.SEA-KEF
25h 00m1 stop
10:00 a.m. - 10:00 a.m.KEF-SEA
31h 00m2 stops
C$ 708
Find Deal
Sat, 10 Aug - Sun, 25 Aug
5:15 p.m. - 8:30 a.m.SEA-KEF
32h 15m1 stop
10:00 a.m. - 10:51 a.m.KEF-SEA
31h 51m1 stop
C$ 709United Airlines
Find Deal
Fri, 16 Aug - Sat, 24 Aug
7:40 a.m. - 8:35 a.m.SEA-KEF
17h 55m1 stop
10:00 a.m. - 9:25 p.m.KEF-SEA
18h 25m1 stop
C$ 711Air Canada
Find Deal
Sat, 27 Jul - Mon, 19 Aug
6:45 p.m. - 7:00 a.m.SEA-KEF
29h 15m2 stops
10:00 a.m. - 10:00 a.m.KEF-SEA
31h 00m2 stops
C$ 713
Find Deal
Mon, 16 Sep - Mon, 23 Sep
11:53 a.m. - 7:00 a.m.SEA-KEF
12h 07m1 stop
11:00 a.m. - 7:31 p.m.KEF-SEA
15h 31m1 stop
C$ 715United Airlines
Find Deal
Mon, 23 Sep - Tue, 1 Oct
6:30 a.m. - 7:00 a.m.SEA-KEF
17h 30m1 stop
11:25 a.m. - 7:31 p.m.KEF-SEA
15h 06m1 stop
C$ 730Delta
Find Deal
Mon, 12 Aug - Fri, 23 Aug
11:15 p.m. - 6:20 a.m.SEA-KEF
24h 05m1 stop
11:25 a.m. - 7:23 p.m.KEF-SEA
14h 58m1 stop
C$ 749Delta
Find Deal
Wed, 4 Sep - Thu, 3 Oct
6:55 p.m. - 9:15 a.m.SEA-KEF
7h 20mdirect
7:45 p.m. - 8:35 p.m.KEF-SEA
7h 50mdirect
C$ 1,002Icelandair
Find Deal
Wed, 18 Sep - Thu, 26 Sep
11:00 p.m. - 1:25 p.m.SEA-KEF
7h 25mdirect
10:30 a.m. - 11:20 a.m.KEF-SEA
7h 50mdirect
C$ 1,020Icelandair
Find Deal
Mon, 12 Aug - Mon, 26 Aug

Flights from Seattle to Keflavik Intl - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to Keflavik Intl to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Seattle to Reykjavik Keflavik Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to Reykjavik Keflavik Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Seattle to Reykjavik Keflavik Intl Airport is January, where tickets cost C$ 824 on average. On the other hand, the most expensive months are September and December, where the average cost of tickets is C$ 1,405 and C$ 1,182 respectively.

How far in advance should I book a flight from Seattle to Reykjavik Keflavik Intl Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to Reykjavik Keflavik Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Seattle to Reykjavik Keflavik Intl Airport, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 31 days before departure.

Which airlines provide the cheapest flights from Seattle to Reykjavik?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from Seattle to Reykjavik found by KAYAK users in the last 72 hours was for C$ 709 on United Airlines, followed by Air Canada (C$ 711). One-way flight deals have also been found from as low as C$ 492 on WestJet and from C$ 738 on Icelandair.

Which airlines fly direct between Seattle and Reykjavik Keflavik Intl Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Seattle to Reykjavik Keflavik Intl Airport.
There is just one airline that flies from Seattle to Reykjavik Keflavik Intl Airport direct and that is Icelandair. The best one-way deal found from Icelandair for the route is C$ 957.

How many flights are there between Seattle and Reykjavik Keflavik Intl Airport per day?

Each day, there are 3 nonstop flights that take off from Seattle and land in Reykjavik Keflavik Intl Airport, with an average flight time of 7h 23m. The most common departure time is 6:00 p.m. and most flights take off at night. Each week, there are 21 flights and there are the same amount of flights each day 3.

Which cabin class options are there for flights between Seattle and Reykjavik Keflavik Intl Airport?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 2 cabin class options for the route. These are Business and Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Seattle to Reykjavik take?

Direct flights cover the 9,346 km separating Seattle to Reykjavik in about 7h 20m.

What’s the earliest departure time from Seattle to Reykjavik?

Early birds can take the earliest flight from Seattle at 3:50 pm and will be landing in Reykjavik Keflavik Intl Airport at 6:15 am.

What’s the latest departure time from Seattle to Reykjavik?

If you prefer to fly at night, the latest flight from Seattle to Reykjavik Keflavik Intl Airport jets off at 11:00 pm and lands at 1:25 pm.

Good to know

Low season

December

High season

August

Cheapest flight

C$ 492
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly (1% more expensive on average)
Flight from Seattle to Reykjavik

When to book flights from Seattle to Keflavik Intl

Are your dates flexible? Find out the best times to travel from Seattle to Keflavik Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Seattle to Reykjavik flights

  • What is the cheapest flight from Seattle to Reykjavik Keflavik Intl Airport?

    In the last 3 days, the lowest price for a flight from Seattle to Reykjavik Keflavik Intl Airport was C$ 359 for a one-way ticket and C$ 512 for a round-trip.

  • Which airports will I be using when flying from Seattle to Reykjavik?

    When flying out of Seattle you will be using Seattle/Tacoma Intl. You will be landing at Reykjavik, also known as Reykjavik Keflavik Intl.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to Reykjavik?

    All the following airlines offer inflight Wi-Fi service on the Seattle to Reykjavik flight route: Lufthansa, United Airlines, Delta, Air France, American Airlines, and Virgin Atlantic.

  • Which aircraft models fly most regularly from Seattle to Reykjavik?

    The Boeing 787-9 Dreamliner is the aircraft model that flies most regularly on the Seattle to Reykjavik flight route.

  • Which airline alliances offer flights from Seattle to Reykjavik?

    oneworld is the only airline alliance operating flights between Seattle and Reykjavik.

  • On which days can I fly direct from Seattle to Reykjavik?

    There are direct flights from Seattle to Reykjavik on a daily basis.

  • How does KAYAK find such low prices on flights from Seattle to Reykjavik?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Reykjavik.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Reykjavik?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reykjavik from Seattle is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Reykjavik?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Reykjavik with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Reykjavik?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Reykjavik from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from Seattle to Reykjavik

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 805 or less one-way and C$ 826 or less round-trip.

Prefer to fly non-stop from Seattle to Reykjavik?

Find which airlines fly direct from Seattle/Tacoma Intl to Keflavik Intl, which days they fly and book direct flights.

Nonstop departures

Seattle/Tacoma Intl to Reykjavik Keflavik Intl

Monday

Alaska Airlines, Icelandair

Alaska Airlines, Icelandair

Tuesday

Alaska Airlines, Icelandair, airBaltic

Alaska Airlines, Icelandair, +1 more

Wednesday

Alaska Airlines, Icelandair

Alaska Airlines, Icelandair

Thursday

Alaska Airlines, Icelandair, airBaltic

Alaska Airlines, Icelandair, +1 more

Friday

Alaska Airlines, Icelandair, airBaltic

Alaska Airlines, Icelandair, +1 more

Saturday

Alaska Airlines, Icelandair

Alaska Airlines, Icelandair

Sunday

Alaska Airlines, Icelandair, airBaltic

Alaska Airlines, Icelandair, +1 more

See more nonstop flights

Nonstop returns

Reykjavik Keflavik Intl to Seattle/Tacoma Intl

Monday

Alaska Airlines, Icelandair, airBaltic

Alaska Airlines, Icelandair, +1 more

Tuesday

Alaska Airlines, Icelandair

Alaska Airlines, Icelandair

Wednesday

Alaska Airlines, Icelandair, airBaltic

Alaska Airlines, Icelandair, +1 more

Thursday

Alaska Airlines, Icelandair

Alaska Airlines, Icelandair

Friday

Alaska Airlines, Icelandair, airBaltic

Alaska Airlines, Icelandair, +1 more

Saturday

Alaska Airlines, Icelandair, airBaltic

Alaska Airlines, Icelandair, +1 more

Sunday

Alaska Airlines, Icelandair

Alaska Airlines, Icelandair

See more nonstop flights
See more nonstop flights

Top airline flying from Seattle to Keflavik Intl

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Reykjavik. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Keflavik Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
IcelandairOverall score based on 1329 reviews
7.1Boarding
6.2Food
6.8Comfort
7.1Entertainment
7.9Crew
Airline reviews

Decent service - nice seats. Crew were not overly attentive but can’t complain overall for the money

8.0 ExcellentFreddie, May 2024ORD - KEF
Read more about Icelandair reviews

Decent service - nice seats. Crew were not overly attentive but can’t complain overall for the money

Very nice flight, easy connections in Keflavík, and friendly crew.

I will never fly this airline again. Checking in was poor , we had to go back to the check in counter at Raleigh - Durham international airport three times because they didn’t issue my boarding pass but rather duplicated my husband’s twice which caused a big headache at the passport control at the airport which triggered security alert and wouldn’t let us pass through we we had to wait for long time to be able to explain and clear everything after talking to the supervisor.. No food on the plane , not even crackers. No food was offered to buy ether . No ear phone was provided . Very little time to make from one plane to another and nobody to assist with smooth transition. Flight itself , we felt safe so thank you to the pilots . But customer service was terrible . We spent $ 2500 on 2 tickets, so I cannot say that service was consistent with the price .

Seats are way too much now with these new airplanes especially long flights like we had. I was 7 month pregnant and in a lot of discomfort due to small seats.

Food was horrible. This wasn’t business class. No leg space, can’t sleep in row position, huge delay

I liked how easy my transfers between flights in Keflavik were. I would have appreciated more food options in Keflavik.

The plane was flaming hot! Could not breathe. Everyone coughing from heat. Awful.

My biggest problem was the flight from KEF to DUB was delayed, which caused me to miss my connecting flight in DUB and we were forced into an unplanned 10-hour layover in DUB. Crew and boarding staff were all very friendly but this was a real inconvenience and especially uncomfortable for my disabled wife.

Not much! This was my first flight with Iceland air and unfortunately it wasn’t what I have expected. My luggage is lost nothing as of yet where it was left. Not a good service at all!!

The seat size was more like a domestic than an international flight. In fact, i would compare the ammenities, quality and service to a short hall ryan air flight, which was unexpected for an international flight. The plane was extremely hot so sleeping was difficult. My biggest complaint was that they are very strict on carry on luggage only allowing it to weigh 10kg/22lb. I try to limit myself to a carryon so i don't have to mess with bagage claim, but the wieght restriction made it impossible. I have never had a carry on weight restriction (at least enforced) on an international flight. Will not be including them in future searches.

Book cheap flights from Seattle to Reykjavik

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Reykjavik found on KAYAK in the last 72 hours.
5/8Mon
1 stopWestJet
18h 15mSEA-KEF
C$ 492
22/8Thu
2 stopsWestJet
33h 45mSEA-KEF
C$ 522
13/5Mon
directIcelandair
7h 20mSEA-KEF
C$ 738
3/7Wed
1 stopKLM
19h 20mSEA-KEF
C$ 745
21/8Wed
1 stopDelta
23h 30mSEA-KEF
C$ 759
13/8Tue
1 stopDelta
23h 30mSEA-KEF
C$ 760
14/5Tue
1 stopKLM
19h 20mSEA-KEF
C$ 813
26/6Wed
1 stopUnited Airlines
25h 00mSEA-KEF
C$ 915
22/8Thu
3 stopsUnited Airlines
35h 05mSEA-KEF
C$ 970
27/5Mon
directIcelandair
7h 25mSEA-KEF
C$ 1,917

Search by stops

Search by airline

Search by price

Last minute flights from Seattle to Keflavik Intl

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Seattle to Reykjavik that are departing in the next 10 days.
10/5Fri
multi-stopDelta
19h 20mSEA-KEF
17/5Fri
multi-stopDelta
17h 53mKEF-SEA
C$ 1,311
9/5Thu
multi-stopDelta
13h 32mSEA-KEF
15/5Wed
multi-stopDelta
20h 35mKEF-SEA
C$ 1,365
9/5Thu
multi-stopUnited Airlines
35h 05mSEA-KEF
15/5Wed
multi-stopUnited Airlines
13h 45mKEF-SEA
C$ 1,372
10/5Fri
multi-stopAir France
14h 55mSEA-KEF
17/5Fri
multi-stopAir France
18h 00mKEF-SEA
C$ 1,380
9/5Thu
multi-stopUnited Airlines
32h 49mSEA-KEF
14/5Tue
multi-stopUnited Airlines
17h 27mKEF-SEA
C$ 1,382
9/5Thu
multi-stopAustrian Airlines
33h 05mSEA-KEF
14/5Tue
multi-stopAustrian Airlines
25h 35mKEF-SEA
C$ 1,427
9/5Thu
multi-stopAustrian Airlines
32h 14mSEA-KEF
14/5Tue
multi-stopAustrian Airlines
25h 35mKEF-SEA
C$ 1,428
9/5Thu
multi-stopLufthansa
26h 09mSEA-KEF
13/5Mon
multi-stopLufthansa
19h 00mKEF-SEA
C$ 1,446
10/5Fri
multi-stopAir France
38h 31mSEA-KEF
17/5Fri
multi-stopAir France
18h 00mKEF-SEA
C$ 1,487
10/5Fri
multi-stop
15h 40mSEA-KEF
16/5Thu
multi-stop
25h 35mKEF-SEA
C$ 7,568

Search by stops

Search by airline

Search by price

Seattle - Reykjavik Flights

Departure:

Seattle (undefined)United States

Destination:

Reykjavik (KEF)Iceland

Cabin classes:

C$ 4,605
C$ 3,243
C$ 685

Browse origins:

  • Flights » 
  • Seattle

Browse destinations:

  • Flights » 
  • Worldwide » 
  • Reykjavik-Keflavik Airport