Question 1

What are the cheapest airlines flying from Seattle to Reykjavik Keflavik Intl Airport round-trip?

Accepted Answer

According to our current data, United Airlines (C$ 556), Icelandair (C$ 562), and Delta (C$ 579) offers the cheapest pricing from Seattle to Reykjavik Keflavik Intl Airport. You may be able to fly from Seattle to Reykjavik Keflavik Intl Airport for 43% less than the average price by searching for these airlines.

Question 2

What are the cheapest airlines to fly from Seattle to Reykjavik Keflavik Intl Airport one-way?

Accepted Answer

To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at C$ 498. United Airlines flights start at C$ 541 while deals on Lufthansa start at C$ 631 one-way.

Question 3

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

Accepted Answer

The price you pay for your flight from Seattle to Reykjavik Keflavik Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 47 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Question 4

What is the cheapest month to book a flight from Seattle to Reykjavik Keflavik Intl Airport?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Seattle to Reykjavik Keflavik Intl Airport (average of C$ 268). Flying from Seattle to Reykjavik Keflavik Intl Airport in December is currently the most expensive (average of C$ 593). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 5

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

Accepted Answer

Travelers seeking maximum savings on their Seattle to Reykjavik Keflavik Intl Airport flight should consider departing on Thursday at noon when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Question 6

Weekly flight availability from Seattle to Reykjavik Keflavik Intl Airport

Accepted Answer

The most flights from SEA to KEF are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

Question 7

E

Accepted Answer

In terms of precipitation, rainfall in Reykjavik Keflavik Intl Airport ranges from 40.0 - 80.0 mm per month. January is typically the wettest month, when rainfall can reach 80.0 mm. May is typically the driest time to visit Reykjavik Keflavik Intl Airport when rainfall is around 40.0 mm.

Question 8

E

Accepted Answer

If weather is an important factor for your trip to Reykjavik Keflavik Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 11.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

Question 9

What are the cheapest flights from Seattle to Reykjavik Keflavik Intl Airport?

Accepted Answer

On average you can expect to pay C$ 604 for a flight from Seattle to Reykjavik Keflavik Intl Airport. The cheapest flight overall is C$ 310 while the most popular route, (Seattle/Tacoma Intl - Reykjavik Keflavik Intl) is currently priced at C$ 579.

Question 10

What is the cheapest day to fly round-trip from Seattle to Reykjavik Keflavik Intl Airport?

Accepted Answer

Departing on a Sunday is a good option for securing a great price. You can expect to save up to 23% when planning your travel around this day of the week.

Question 11

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

Accepted Answer

Users have found that booking a flight from Seattle to Reykjavik Keflavik Intl Airport at least 24 days early can save you up to 17% on average compared to booking a flight this week. If booking 24 days before your flight isn’t an option for you, users have found flights from Seattle to Reykjavik Keflavik Intl Airport for as little as C$ 750 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as C$ 773 for flights departing within the next 3 days.

Question 12

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

Accepted Answer

The best pricing can be found in the month of August. Prices to Reykjavik Keflavik Intl Airport from Seattle average C$ 990. You can even find prices in August for less than C$ 990, as users have found deals to Reykjavik Keflavik Intl Airport from as low as C$ 560. The month of December appears to be one of the more expensive times to travel to Reykjavik Keflavik Intl Airport from Seattle. Flying in the targeted month can save you up to 10%.

Question 13

What is the cheapest time of day to fly from SEA to KEF?

Accepted Answer

It’s typically best to fly out from Seattle to Reykjavik Keflavik Intl Airport in the morning. Doing so could potentially save you 19% on the flight price compared to flying at noon, which is usually more expensive.

Question 14

What airport do you fly from for flights from Seattle to Reykjavik Keflavik Intl?

Accepted Answer

Seattle/Tacoma Intl (SEA), located 18.4 km from the city centre, is the airport you fly out of when you book flights from Seattle to Reykjavik Keflavik Intl. 0 airlines have flights from Seattle/Tacoma Intl to Reykjavik Keflavik Intl on a regular basis. Booking flights from Seattle/Tacoma Intl to Reykjavik Keflavik Intl should not be difficult; the airport handles an average of 6 outbound flights to Reykjavik Keflavik Intl per day.

Question 15

Can I find deals for flights from Seattle to Keflavik Intl that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Seattle to Keflavik Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

Question 16

How can I find direct flights from Seattle to Keflavik Intl?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Keflavik Intl.

Question 17

Can I find deals for business class flights from Seattle to Keflavik Intl?

Accepted Answer

Yes. Cheapflights offers flight deals from Seattle to Keflavik Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 18

How does Cheapflights help users find flights from Seattle to Keflavik Intl?

Accepted Answer

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Keflavik Intl from Seattle today with Cheapflights!

Question 19

Why should you use Cheapflights to find cheap flight tickets from Seattle to Keflavik Intl?

Accepted Answer

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Keflavik Intl for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Question 20

Can Cheapflights find flights from Seattle to Keflavik Intl with no change fees?

Accepted Answer

Yes! Cheapflights helps users easily find flights from Seattle to Keflavik Intl with no change fees.

Question 21

Can Cheapflights notify me if prices for flights from Seattle to Keflavik Intl become cheaper?

Accepted Answer

Not ready to book yet? You can track prices for flights from Seattle to Keflavik Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

Round-trip from	C$ 556
One-way from	C$ 453
Popular in	December
Cheapest in	October
Average price	C$ 982
Good round-trip deal	C$ 680 or less
Good one-way deal	C$ 370 or less

Cheap flights from Seattle to Reykjavik Keflavik Intl Airport from C$ 453

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Seattle to Keflavik Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Seattle to Keflavik Intl

Cheapest flights from Seattle to Keflavik IntlExplore the most affordable flight options available from Seattle to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 July 2025.

Explore the most affordable flight options available from Seattle to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Reykjavik Keflavik Intl Airport that are best for you.

Best time to book a flight from Seattle to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Seattle with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Reykjavik Keflavik Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Keflavik Intl. Price data was last updated on 27 June 2025.

What is the cheapest month to book a flight from Seattle to Reykjavik Keflavik Intl Airport?

What is the cheapest time of day to fly from SEA to KEF?

Find hourly flight availability from Seattle to Keflavik Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 1 July 2025.

Weekly flight availability from Seattle to Reykjavik Keflavik Intl Airport

Explore weekly flight availability from Seattle to Keflavik Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 1 July 2025.

Reviews of airlines servicing Keflavik Intl

Check out reviews from past customers who have flown with Delta,KLM, andSWISS from Seattle to Reykjavik Keflavik Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Keflavik Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Seattle to Reykjavik Keflavik Intl?

What are the cheapest airlines flying from Seattle to Reykjavik Keflavik Intl Airport round-trip?

What are the cheapest airlines to fly from Seattle to Reykjavik Keflavik Intl Airport one-way?

What are the cheapest flights from Seattle to Reykjavik Keflavik Intl Airport?

Can I find deals for flights from Seattle to Keflavik Intl that include hotel bookings?

How can I find direct flights from Seattle to Keflavik Intl?

Can I find deals for business class flights from Seattle to Keflavik Intl?

What is the cheapest month to book a flight from Seattle to Reykjavik Keflavik Intl Airport?

Travelling to a place near Seattle?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Complete your trip

Complete your trip to Keflavik Intl by adding a car rental and/or hotel reservation to your travel itinerary.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Keflavik Intl?

Why should you use Cheapflights to find cheap flight tickets from Seattle to Keflavik Intl?

Can Cheapflights find flights from Seattle to Keflavik Intl with no change fees?

Can Cheapflights notify me if prices for flights from Seattle to Keflavik Intl become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Seattle to Keflavik Intl
Explore the most affordable flight options available from Seattle to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 July 2025.