Question 1

Which airlines fly direct from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?

Accepted Answer

Enter KEF to SEA and your travel dates, then apply the 'Nonstop' filter to see only direct flights.

Question 2

How do I find cheap flights from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?

Accepted Answer

To find a cheap flight from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

Question 3

What is the best airline to fly with from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?

Accepted Answer

The best airline to fly with from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will differ from traveller to traveller. If you like to fly early, FI offers early morning flights. If price is the most important factor, FI typically offers the lowest fares. DL offers the most daily flights from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), which is brilliant if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.

Question 4

What is the best time to fly from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?

Accepted Answer

The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.

Question 5

How many flights per day from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?

Accepted Answer

There are approximately 3 nonstop flights per day from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.). For even more choice, look at flights that include layovers, as there are around 26 connecting flights per day. Some common connection points include Frankfurt Intl. (FRA), O'Hare Intl. (ORD), and Pearson Intl. (YYZ).

Question 6

What is the earliest flight from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?

Accepted Answer

The earliest flight from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically departs at approximately 12:10 AM local time. This service is operated by Austrian Airlines and Lufthansa, and it is a seasonal service active in May. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

Question 7

What day of the week has the most flights from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?

Accepted Answer

You'll typically find the most flights from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) on a Monday, with around 21 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Delta Air Lines, Icelandair, and British Airways. Compared to other days, Mondays offer notably more flight options.

Question 8

What are the most popular departure times for flights from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?

Accepted Answer

The most popular departure times for flights from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are in the morning, from 9am to 12pm. About 39% of passengers prefer this time. Many major carriers, including Delta, British Airways and Alaska Airlines, offer flights during this window. This timing works well because it allows you to start your travel day a bit later and arrive in Seattle with plenty of time to settle in.

Question 9

How long does it take to fly from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?

Accepted Answer

A nonstop flight from KEF to SEA typically takes around 8 hours, covering approximately 3,610 miles. Connecting flights on this route usually add 16 hours 20 minutes to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.

Question 10

Can you fly business or first class from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?

Accepted Answer

Select the "Business class" and "First class" filters when looking for KEF to SEA flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.

Question 11

How do I earn miles on a Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?

Accepted Answer

It's easy to earn miles on a Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

Question 12

What airports do you fly into for Seattle from Keflavik Intl. (KEF)?

Accepted Answer

From Keflavik Intl. (KEF), you can fly directly into Seattle - Tacoma Intl. (SEA) to reach Seattle. Some flights may connect through major hubs like Frankfurt Intl. (FRA), Franz Josef Strauss Intl. (MUC), Pearson Intl. (YYZ) before reaching Seattle. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Question 13

Is it cheaper to buy a plane ticket from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?

Accepted Answer

Typically, booking a last minute flight from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Question 14

Is it cheaper to book a Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?

Accepted Answer

Securing a Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

Question 15

Can I cancel or change the date of my flight from Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?

Accepted Answer

If you booked your Reykjavik (KEF-Keflavik Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Origin airport	Keflavik Intl.
Destination airport	Seattle - Tacoma Intl.
Airlines serving	Air Canada, Air France, Alaska Airlines, American Airlines, British Airways, Finnair, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Virgin Atlantic
Return price	£417
Distance	5776 km

Flight 1

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

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

Frequently asked questions

Travel information

Explore a world of travel with Expedia

£216 Cheap Flights from Reykjavik (KEF) to Seattle (SEA)