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Cheap flights from Seattle to Reykjavik Keflavik Intl Airport from C$ 602

SEA — KEF
1 Nov — 8 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 4/127:00 a.m. -
1 stop19h 00m
Thu 10/1212:00 p.m. -
1 stop18h 43m
Deal found 2/10C$ 702
Thu 12/1112:20 p.m. -
2 stops37h 40m
Thu 19/1112:00 p.m. -
1 stop15h 03m
Deal found 2/10C$ 725
Tue 15/122:35 p.m. -
Nonstop7h 40m
Sun 10/15:00 p.m. -
Nonstop8h 00m
Deal found 30/9C$ 775
Sun 18/107:00 p.m. -
Nonstop7h 25m
Sun 25/107:45 p.m. -
Nonstop7h 55m
Deal found 30/9C$ 842
Thu 1/105:59 p.m. -
1 stop30h 01m
Mon 5/109:30 a.m. -
1 stop34h 00m
Deal found 1/10C$ 866
Fri 2/1011:50 a.m. -
1 stop14h 40m
Fri 9/1011:25 a.m. -
1 stop18h 39m
Deal found 1/10C$ 876
Sat 17/107:15 a.m. -
1 stop19h 15m
Wed 21/1011:25 a.m. -
1 stop18h 39m
Deal found 1/10C$ 877
Tue 29/97:15 a.m. -
2 stops19h 15m
Sat 3/1011:25 a.m. -
1 stop18h 55m
Deal found 29/9C$ 883
Mon 28/910:40 p.m. -
1 stop27h 50m
Sun 4/109:30 a.m. -
1 stop21h 25m
Deal found 28/9C$ 884
Fri 16/1010:59 p.m. -
1 stop27h 31m
Fri 23/1011:25 a.m. -
1 stop15h 44m
Deal found 30/9C$ 891

Find flight deals from Seattle to Keflavik Intl

Round-trip from

C$ 725

One-way from

C$ 602

Popular in

August

Cheapest in

January

Average price

C$ 840

Good round-trip deal

C$ 693 or less

Good one-way deal

C$ 431 or less
United Airlines
  • United Airlines
  • 12/11-19/11
  • 3 total stops
  • 52h 43m total
  • Seattle to Reykjavik
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11/11-31/12
  • 11/11-31/12
  • 3 total stops
  • 59h 15m total
  • Seattle to Reykjavik
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Highest demand for flights based on searches. 13% potential increase in price (C$ 218 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

Wed 11/11

2:50 p.m.-10:05 a.m.

3 stops59h 15m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 602
Quickest round-trip

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Wed 11/11

2:35 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$ 713

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Thu 12/11

12:20 p.m.-10:00 a.m.

2 stops37h 40m

Reykjavik Keflavik Intl

Thu 19/11

12:00 p.m.-11:14 a.m.

2 stops31h 14m

C$ 725

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Mon 28/12

2:35 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$ 746

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Wed 11/11

2:50 p.m.-2:20 p.m.

1 stop15h 30m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 758

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sun 29/11

7:00 a.m.-10:00 a.m.

1 stop19h 00m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 785

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sun 15/11

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

1 stop15h 10m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 785

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sat 21/11

10:56 p.m.-10:00 a.m.

1 stop27h 04m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 809

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Mon 19/10

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$ 833

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sun 27/12

8:57 p.m.-6:15 a.m.

1 stop25h 18m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 881

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/9

Showing 1-10 of 19 resultsSorted by cheapest first
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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 89 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$ 708). Flying from Seattle to Reykjavik Keflavik Intl Airport in August is currently the most expensive (average of C$ 1,398). 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$ 638 and C$ 1,065 in December.
The cheapest round-trip price found within the last 5 days was C$ 702 on United Airlines (4 Dec-10 Dec).

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 37h 40m. 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$ 591 for a flight from Seattle to Reykjavik Keflavik Intl Airport. The cheapest flight overall is C$ 422 while the most popular route, (Seattle/Tacoma Intl - Reykjavik Keflavik Intl) is currently priced at C$ 726.

  • 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$ 708). Flying from Seattle to Reykjavik Keflavik Intl Airport in August is currently the most expensive (average of C$ 1,398). 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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