SEA - KEF

$384 Find Cheap Flights from Seattle to Reykjavik

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 Reykjavik departing on 3/24. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Reykjavik Keflavik Intl Airport

 
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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$462
Typical prices: $515-$638
Icelandair
Tue 4/21Tue 4/28
SEA - KEF • Non-stop
Cheapest one-way
$381
Typical prices: $511-$558
Multiple Airlines
Tue 3/24
SEA - KEF • 3 stops
Top airlines
Icelandair
Cheapest • from $462 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Every day
You can fly direct with Icelandair. Average duration is 7h 42m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
New York (JFK)
Cheapest • Avg $506 (round-trip)
Calgary (YYC)
Shortest trip • 11h 10m (one-way)
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 53% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 32% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Reykjavik!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Reykjavik (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 Reykjavik 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Reykjavik

Tue, Apr 21 - Tue, Apr 28
Icelandair Logo
7:00 pm - 9:25 am
SEA
-
KEF
7h 25mnonstop
Icelandair Logo
4:50 pm - 5:55 pm
KEF
-
SEA
8h 05mnonstop
$462Icelandair
Sun, Mar 29 - Wed, Apr 8
Icelandair Logo
3:40 pm - 6:15 am
SEA
-
KEF
7h 35mnonstop
Icelandair Logo
4:50 pm - 5:55 pm
KEF
-
SEA
8h 05mnonstop
$463Icelandair
Mon, Apr 20 - Fri, Apr 24
Icelandair Logo
7:00 pm - 9:25 am
SEA
-
KEF
7h 25mnonstop
Icelandair Logo
7:45 pm - 8:40 pm
KEF
-
SEA
7h 55mnonstop
$475Icelandair
Sun, Mar 29 - Sun, Apr 5
Icelandair Logo
3:40 pm - 6:15 am
SEA
-
KEF
7h 35mnonstop
Icelandair Logo
7:45 pm - 8:40 pm
KEF
-
SEA
7h 55mnonstop
$477Icelandair
Tue, Apr 21 - Sun, Apr 26
Icelandair Logo
7:00 pm - 9:25 am
SEA
-
KEF
7h 25mnonstop
Icelandair Logo
7:45 pm - 8:40 pm
KEF
-
SEA
7h 55mnonstop
$479Icelandair
Mon, Apr 13 - Fri, Apr 24
Icelandair Logo
7:00 pm - 9:25 am
SEA
-
KEF
7h 25mnonstop
Icelandair Logo
7:45 pm - 8:40 pm
KEF
-
SEA
7h 55mnonstop
$480Icelandair
Sat, Apr 18 - Fri, Apr 24
Icelandair Logo
7:00 pm - 9:25 am
SEA
-
KEF
7h 25mnonstop
Icelandair Logo
7:45 pm - 8:40 pm
KEF
-
SEA
7h 55mnonstop
$481Icelandair
Tue, Apr 21 - Tue, Apr 28
Icelandair Logo
7:00 pm - 9:25 am
SEA
-
KEF
7h 25mnonstop
Icelandair Logo
4:50 pm - 5:55 pm
KEF
-
SEA
8h 05mnonstop
$484Icelandair
Tue, Mar 31 - Mon, Apr 6
Icelandair Logo
3:40 pm - 6:15 am
SEA
-
KEF
7h 35mnonstop
Icelandair Logo
7:45 pm - 8:40 pm
KEF
-
SEA
7h 55mnonstop
$485Icelandair
Tue, Apr 21 - Tue, Apr 28
Icelandair Logo
7:00 pm - 9:25 am
SEA
-
KEF
7h 25mnonstop
Icelandair Logo
4:50 pm - 5:55 pm
KEF
-
SEA
8h 05mnonstop
$487Icelandair
Booking Insights

KAYAK's insights & trends for Seattle to Reykjavik flights

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

How much is a round-trip flight from Seattle to Reykjavik Keflavik Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Reykjavik Keflavik Intl Airport departing in April.

What’s the cheapest day of the week to fly from Seattle to Reykjavik?

The average price of all round-trip flights from Seattle to Reykjavik Keflavik Intl Airport clicked on KAYAK for each day over the last 12 months.

When flying from Seattle to Reykjavik, you should consider leaving on a Wednesday and avoid Fridays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Fridays and the most expensive ones on Wednesdays.

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 round-trip 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 October, where tickets cost $425 (return) on average. On the other hand, the most expensive months are February and June, where the average cost of round-trip tickets is $787 and $707 respectively.

Can I save money by flying with a layover from Seattle to Reykjavik Keflavik Intl Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $606 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip 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 week.

To get a below average price on the flight from Seattle to Reykjavik Keflavik Intl Airport, you should book around 3 weeks before departure, which saves you about 53% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$381
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly with an average 4% increase in price.
Flight from Seattle to Reykjavik

When to book flights from Seattle to Reykjavik

Are your dates flexible? Find out the best times to travel from Seattle to Reykjavik 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 $381 for a one-way ticket and $462 for a round-trip.

  • Do I need a passport to fly between Seattle and Reykjavik?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Seattle and on arrival in Reykjavik.

  • 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: Air France, Virgin Atlantic, Delta, KLM, Scandinavian Airlines, Lufthansa, and United Airlines.

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

    The Airbus A330-900neo 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 nonstop flights from Seattle to Reykjavik on a daily basis.

  • Which is the best airline for flights from Seattle to Reykjavik, Alaska Airlines or Icelandair?

    The two airlines most popular with KAYAK users for flights from Seattle to Reykjavik are Alaska Airlines and Icelandair. With an average price for the route of $848 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Icelandair is also a great choice for the route, with an average price of $606 and an overall rating of 7.1.

  • 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 travelers 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. Booking your flights between Seattle and KEF can sometimes prove cheaper using this method.

  • 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.

KAYAK’s top tips for finding a cheap flight from Seattle to Reykjavik Keflavik Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $363 or less one-way and $515 or less round-trip.

Prefer to fly direct from Seattle to Reykjavik?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Seattle/Tacoma Intl to Reykjavik Keflavik Intl.
Find which airlines fly direct from Seattle/Tacoma Intl Airport to Reykjavik Keflavik Intl Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to Reykjavik Keflavik Intl

Monday

Icelandair

Icelandair

Tuesday

Icelandair

Icelandair

Wednesday

Icelandair

Icelandair

Thursday

Icelandair

Icelandair

Friday

Icelandair

Icelandair

Saturday

Icelandair

Icelandair

Sunday

Icelandair

Icelandair

See more direct flights

Direct returns

Reykjavik Keflavik Intl to Seattle/Tacoma Intl

Monday

Icelandair

Icelandair

Tuesday

Icelandair

Icelandair

Wednesday

Icelandair

Icelandair

Thursday

Icelandair

Icelandair

Friday

Icelandair

Icelandair

Saturday

Icelandair

Icelandair

Sunday

Icelandair

Icelandair

See more direct flights

Reviews of the top airlines flying from Seattle to Reykjavik

 
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 Reykjavik? 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.
8.0
Alaska AirlinesOverall score based on 11938 reviews
7.8Comfort
8.5Crew
7.0Entertainment
8.1Boarding
7.1Food
Airline reviews

The flight was too short. No snacks or drinks offered.

8.0 ExcellentGregory, Feb 2026
SEA - GEG
Read more Alaska Airlines reviews

The flight was too short. No snacks or drinks offered.

The flight attendant was friendly and attentive. Although our interaction was brief—- it made a difference. The crew was upfront about turbulence. I like the Maui pretzels.

Everything was good. Please have a wheat free option for snacks in the future.

They are always so great! Friendly, on time if not early, organized boarding process. Great price too.

Crew very courteous. Boarding was great. Slow to get baggage at Denver.

Lester and the rest of the crew were such a joy. Also, I want to thank the pilots for getting us there on time, and safely. My first amd only choice will always be Alaska Airlines.

Not delay for a few passengers. That was uncalled for. If idiots can't make the flight on time thats their fault. Why should I be punished for them? No more holding the plane for one or two people

I paid for the WiFi and it didn’t work during the whole flight

Impressed that Alaska Air(for our domestic flight) transferred our checked bags to EVA (for our international flights) so that we didn't have to handle them, & we just picked them up at our final destination.

I enjoyed the movie selection. I’m glad I saw ahead of time to bring personal ear buds. I don’t normally have them with me and airlines used to give them out.

Iceland Air severely damaged a checked bag. Additionally, the gate agent caused issues for many passengers who had standard-sized onboard bags that would have passed inspection by any other airline.

The staff was kind and helpful. There was no food, and you needed to bring your own earphones to use the entertainment, which I didn’t know.

Delays at check-in, seemed like they were short ground staff at the time and some passengers needed extra processing.

Food - Non-Existent. You pay for everything. It is strictly Pay-to-Play!

The Experience Was Torture Spend a few extra dollars and avoid Icelandair at all costs. There is absolutely no refreshments, no food, no drinks. Only water, coffee, tea are free and at only half a tiny cup. Entertainment is limited selection of films, shows and mostly outdated. The seats are smaller than usual, with no cushion, no pillows, no blankets. First time in my life have I witness an airline asking for donations in spare change for a charity. With all the money Icelandair saves by starving the passenger, they can afford to give this charity on their own.

If there was a disclaimer regarding food service or lack thereof, l missed it. If l had known l would have prepared better. Same with transferring at Reykjavik. No information about disembarking via stairs into rain, slush and puddles deep enough to swallow a foot. After being treated to haute cuisine restaurants and warm inviting environment during the flight, the airport is, let’s be kind, disappointing. Plane was comfortable, Airbus, staff were welcoming enough. I would likely try the route again. Maybe have a night and day in Iceland. Maybe not.

They had a 4 hour delay and left my luggage in Iceland and it didn’t arrive in Portland until 11/1

It was too cold in the plane my feet froze

Service was excellent. Food and drinks were very good except for a greasy lump of a donut at the end of the flight that left us both feeling internally disgusted.

Handling our luggage was the biggest issue - they lost it and we got it almost 3 days later. Really threw off the beginning of our trip and we really had to change our itinerary accordingly.

Everything you need to know for your flight from Seattle to Reykjavik

Information on your arrival and departure airports