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Cheap flights from Seattle to Reykjavik Keflavik Intl Airport from C$ 613

SEA — KEF
14 Nov — 21 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Keflavik Intl

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Keflavik Intl

Fri 16/1010:42 a.m. -
1 stop15h 08m
Thu 22/1012:00 p.m. -
2 stops17h 59m
Deal found 13/10C$ 687
Sun 8/117:00 a.m. -
1 stop19h 00m
Thu 19/1112:00 p.m. -
1 stop15h 03m
Deal found 14/10C$ 700
Sat 17/107:00 a.m. -
2 stops17h 55m
Sat 24/1012:00 p.m. -
1 stop13h 52m
Deal found 12/10C$ 704
Thu 15/105:07 p.m. -
1 stop32h 43m
Mon 19/1012:00 p.m. -
1 stop17h 53m
Deal found 11/10C$ 709
Wed 11/117:04 p.m. -
2 stops54h 56m
Mon 16/1112:00 p.m. -
1 stop15h 03m
Deal found 14/10C$ 723
Thu 15/105:07 p.m. -
1 stop32h 43m
Sun 18/1012:20 a.m. -
1 stop19h 00m
Deal found 12/10C$ 747
Fri 16/107:55 p.m. -
2 stops30h 35m
Thu 22/1011:25 a.m. -
2 stops19h 34m
Deal found 13/10C$ 862

Find flight deals from Seattle to Keflavik Intl

Round-trip from

C$ 700

One-way from

C$ 613

Popular in

December

Cheapest in

January

Average price

C$ 842

Good round-trip deal

C$ 693 or less

Good one-way deal

C$ 432 or less
United Airlines
  • United Airlines
  • 8/11-21/11
  • 2 total stops
  • 34h 03m total
  • Seattle to Reykjavik
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KLM
  • KLM
  • 22/10-31/12
  • 1 total stop
  • 14h 40m total
  • Seattle to Reykjavik
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Highest demand for flights based on searches. 7% potential increase in price (C$ 111 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 54 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Reykjavik Keflavik Intl.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Reykjavik Keflavik Intl.
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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Thu 22/10

11:50 a.m.-9:30 a.m.

1 stop14h 40m

Reykjavik Keflavik Intl

Wed 31/12

12:00 a.m.-4:00 p.m.

Nonstop0h 00m

C$ 613

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Tue 20/10

11:50 a.m.-9:30 a.m.

1 stop14h 40m

Reykjavik Keflavik Intl

Wed 31/12

12:00 a.m.-4:00 p.m.

Nonstop0h 00m

C$ 613

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Tue 13/4

11:15 a.m.-9:30 a.m.

1 stop15h 15m

Reykjavik Keflavik Intl

Wed 31/12

12:00 a.m.-4:00 p.m.

Nonstop0h 00m

C$ 630

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sun 11/4

7:15 a.m.-9:30 a.m.

1 stop19h 15m

Reykjavik Keflavik Intl

Wed 31/12

12:00 a.m.-4:00 p.m.

Nonstop0h 00m

C$ 630

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Mon 12/4

11:15 a.m.-9:30 a.m.

1 stop15h 15m

Reykjavik Keflavik Intl

Wed 31/12

12:00 a.m.-4:00 p.m.

Nonstop0h 00m

C$ 630

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sat 10/4

9:00 a.m.-9:30 a.m.

2 stops41h 30m

Reykjavik Keflavik Intl

Wed 31/12

12:00 a.m.-4:00 p.m.

Nonstop0h 00m

C$ 657

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Tue 13/4

10:45 a.m.-12:55 p.m.

3 stops43h 10m

Reykjavik Keflavik Intl

Wed 31/12

12:00 a.m.-4:00 p.m.

Nonstop0h 00m

C$ 684

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Wed 28/10

10:50 a.m.-10:00 a.m.

1 stop16h 10m

Reykjavik Keflavik Intl

Thu 5/11

12:00 p.m.-11:15 p.m.

2 stops19h 15m

C$ 707
Quickest round-trip

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Thu 29/10

3:35 p.m.-6:15 a.m.

Nonstop7h 40m

Reykjavik Keflavik Intl

Wed 31/12

12:00 a.m.-4:00 p.m.

Nonstop0h 00m

C$ 710

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Fri 30/10

8:02 a.m.-11:00 a.m.

2 stops43h 58m

Reykjavik Keflavik Intl

Wed 31/12

12:00 a.m.-4:00 p.m.

Nonstop0h 00m

C$ 731

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/10

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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.
Estimated round-trip price

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?

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 58 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Seattle to Reykjavik Keflavik Intl Airport (average of C$ 707). Flying from Seattle to Reykjavik Keflavik Intl Airport in December is currently the most expensive (average of C$ 1,387). 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.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Reykjavik Keflavik Intl Airport as you normally would.

How much does it cost to fly round-trip from Seattle to Reykjavik Keflavik Intl Airport?

Airfare is typical for this route at the moment.

Seattle to Reykjavik Keflavik Intl Airport flights typically cost between C$ 637 and C$ 1,064 in November.
The cheapest round-trip price found within the last 5 days was C$ 700 on United Airlines (8 Nov-19 Nov).

Related info for your journey

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

    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 3 outbound flights to Reykjavik Keflavik Intl per day.

  • How long is the flight from Seattle to Reykjavik Keflavik Intl Airport?

    United Airlines can get you from Seattle to Reykjavik Keflavik Intl Airport in just under 16h 10m. Your travel time can differ by up to . Seattle and Reykjavik Keflavik Intl Airport are separated by a distance of 5807 km.

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

    On average you can expect to pay C$ 631 for a flight from Seattle to Reykjavik Keflavik Intl Airport. The cheapest flight overall is C$ 431 while the most popular route, (Seattle/Tacoma Intl - Reykjavik Keflavik Intl) is currently priced at C$ 1,274.

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

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

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

    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.

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

    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.

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

    Currently, January is the cheapest month in which you can book a flight from Seattle to Reykjavik Keflavik Intl Airport (average of C$ 707). Flying from Seattle to Reykjavik Keflavik Intl Airport in December is currently the most expensive (average of C$ 1,387). 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.

See more FAQs

Travelling to a place near Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Keflavik
Hveragerdi
Grindavik

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