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Cheap flights from Seattle to Reykjavik Keflavik Intl Airport from C$ 674

SEA — KEF
29 Nov — 6 Dec1
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 13/112:30 p.m. -
1 stop11h 30m
Thu 19/1112:00 p.m. -
1 stop15h 03m
Deal found 28/10C$ 674
Fri 13/117:00 a.m. -
1 stop19h 00m
Sat 21/1112:00 p.m. -
1 stop19h 07m
Deal found 29/10C$ 688
Fri 4/125:05 a.m. -
2 stops20h 55m
Mon 14/1212:00 p.m. -
3 stops19h 44m
Deal found 30/10C$ 694
Fri 30/106:00 a.m. -
2 stops21h 00m
Mon 2/1112:00 p.m. -
2 stops29h 47m
Deal found 27/10C$ 695
Thu 12/1110:56 p.m. -
1 stop27h 04m
Thu 19/1112:00 p.m. -
1 stop19h 07m
Deal found 29/10C$ 696
Wed 11/113:49 p.m. -
2 stops58h 11m
Thu 19/1112:00 p.m. -
2 stops29h 47m
Deal found 29/10C$ 710
Wed 25/112:50 p.m. -
1 stop15h 30m
Thu 3/1212:00 p.m. -
1 stop18h 43m
Deal found 28/10C$ 713
Fri 13/1110:50 a.m. -
1 stop15h 10m
Thu 19/113:10 p.m. -
1 stop29h 50m
Deal found 29/10C$ 722

Find flight deals from Seattle to Keflavik Intl

Round-trip from

C$ 674

Popular in

August

Cheapest in

May

Average price

C$ 825

Good round-trip deal

C$ 753 or less

Good one-way deal

C$ 272 or less
United Airlines
  • United Airlines
  • 13/11-19/11
  • 2 total stops
  • 26h 33m total
  • Seattle to Reykjavik
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Highest demand for flights based on searches. 13% potential increase in price (C$ 215 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 52 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

Sat 3/4

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$ 717

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Fri 13/11

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

1 stop15h 10m

Reykjavik Keflavik Intl

Sun 15/11

3:20 p.m.-12:00 p.m.

1 stop28h 40m

C$ 762
Quickest round-trip

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Wed 11/11

2:30 p.m.-10:00 a.m.

1 stop11h 30m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 806

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sun 22/11

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$ 806

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Wed 25/11

8:30 a.m.-10:00 a.m.

2 stops17h 30m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 814

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Mon 11/1

2:35 p.m.-6:15 a.m.

Nonstop7h 40m

Reykjavik Keflavik Intl

Fri 15/1

5:00 p.m.-5:00 p.m.

Nonstop8h 00m

C$ 828

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sun 11/4

9:55 p.m.-9:30 a.m.

1 stop28h 35m

Reykjavik Keflavik Intl

Wed 28/4

11:25 a.m.-10:02 p.m.

1 stop17h 37m

C$ 890

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sun 11/4

9:55 p.m.-9:30 a.m.

1 stop28h 35m

Reykjavik Keflavik Intl

Wed 28/4

8:15 a.m.-6:38 p.m.

2 stops17h 23m

C$ 895

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Tue 1/12

5:28 p.m.-10:00 a.m.

2 stops32h 32m

Reykjavik Keflavik Intl

Mon 7/12

12:00 p.m.-10:43 p.m.

1 stop18h 43m

C$ 896

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Fri 4/12

5:05 a.m.-10:00 a.m.

2 stops20h 55m

Reykjavik Keflavik Intl

Sun 6/12

3:20 p.m.-12:00 p.m.

1 stop28h 40m

C$ 944

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/10

Showing 1-10 of 16 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 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, May is the cheapest month in which you can book a flight from Seattle to Reykjavik Keflavik Intl Airport (average of C$ 762). Flying from Seattle to Reykjavik Keflavik Intl Airport in August is currently the most expensive (average of C$ 1,361). 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 below average for this route at the moment.

Seattle to Reykjavik Keflavik Intl Airport flights typically cost between C$ 828 and C$ 1,427 in November.
The cheapest round-trip price found within the last 5 days was C$ 674 on United Airlines (13 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 0 outbound flights to Reykjavik Keflavik Intl per day.

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

    Icelandair and KLM can get you from Seattle to Reykjavik Keflavik Intl Airport in just under 7h 40m. Your travel time can differ by up to 20h 55m. Seattle and Reykjavik Keflavik Intl Airport are separated by a distance of 5807 km. This flight may include one or multiple stops.

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

    On average you can expect to pay C$ 677 for a flight from Seattle to Reykjavik Keflavik Intl Airport. The cheapest flight overall is C$ 272 while the most popular route, (Seattle/Tacoma Intl - Reykjavik Keflavik Intl) is currently priced at C$ 1,253.

  • 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, May is the cheapest month in which you can book a flight from Seattle to Reykjavik Keflavik Intl Airport (average of C$ 762). Flying from Seattle to Reykjavik Keflavik Intl Airport in August is currently the most expensive (average of C$ 1,361). 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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