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Cheap flights from Seattle to Reykjavik Keflavik Intl Airport from C$ 770

SEA — KEF
4 Oct — 11 Oct1
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

Wed 9/912:00 p.m. -
1 stop12h 00m
Sun 20/99:30 a.m. -
1 stop14h 15m
Deal found 4/9C$ 770
Thu 31/122:35 p.m. -
Nonstop7h 40m
Fri 29/15:00 p.m. -
Nonstop8h 00m
Deal found 31/8C$ 802
Tue 20/107:00 p.m. -
Nonstop7h 25m
Mon 8/25:00 p.m. -
Nonstop8h 00m
Deal found 1/9C$ 812
Sun 25/103:35 p.m. -
Nonstop7h 40m
Sun 7/25:00 p.m. -
Nonstop8h 00m
Deal found 1/9C$ 813
Tue 29/122:35 p.m. -
Nonstop7h 40m
Mon 1/25:00 p.m. -
Nonstop8h 00m
Deal found 31/8C$ 816
Wed 30/122:35 p.m. -
Nonstop7h 40m
Sun 31/15:00 p.m. -
Nonstop8h 00m
Deal found 31/8C$ 817
Wed 4/112:35 p.m. -
Nonstop7h 40m
Thu 12/115:00 p.m. -
Nonstop8h 00m
Deal found 3/9C$ 830
Fri 25/93:40 p.m. -
Nonstop7h 35m
Wed 30/94:50 p.m. -
Nonstop8h 05m
Deal found 4/9C$ 834
Fri 25/95:45 a.m. -
2 stops18h 15m
Thu 1/109:30 a.m. -
1 stop21h 25m
Deal found 2/9C$ 838
Tue 3/112:35 p.m. -
Nonstop7h 40m
Wed 11/115:00 p.m. -
Nonstop8h 00m
Deal found 3/9C$ 844
Wed 30/912:00 p.m. -
1 stop12h 00m
Mon 5/109:30 a.m. -
1 stop21h 25m
Deal found 31/8C$ 849

Find flight deals from Seattle to Keflavik Intl

Round-trip from

C$ 802

Popular in

August

Cheapest in

May

Average price

C$ 947

Good round-trip deal

C$ 657 or less

Good one-way deal

C$ 424 or less
Icelandair
  • Icelandair
  • 31/12-30/1
  • Nonstop
  • 15h 40m total
  • Seattle to Reykjavik
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Highest demand for flights based on searches. 13% potential increase in price (C$ 204 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 50 potential savings vs. average RT price).
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Average for round-trip flights in September 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
Quickest round-trip

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Mon 28/9

3:40 p.m.-6:15 a.m.

Nonstop7h 35m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 831

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Thu 15/10

8:40 a.m.-6:15 a.m.

1 stop14h 35m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 837

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Tue 22/9

6:51 p.m.-6:15 a.m.

1 stop28h 24m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 855

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Mon 28/9

11:59 p.m.-7:00 a.m.

1 stop24h 01m

Reykjavik Keflavik Intl

Mon 5/10

9:30 a.m.-11:55 p.m.

1 stop21h 25m

C$ 857

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Mon 28/9

5:50 p.m.-9:30 a.m.

2 stops32h 40m

Reykjavik Keflavik Intl

Mon 5/10

11:25 a.m.-11:20 p.m.

1 stop18h 55m

C$ 867

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Wed 16/9

6:00 a.m.-7:00 a.m.

1 stop18h 00m

Reykjavik Keflavik Intl

Wed 23/9

11:25 a.m.-11:20 p.m.

1 stop18h 55m

C$ 868

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Fri 25/9

5:45 a.m.-7:00 a.m.

2 stops18h 15m

Reykjavik Keflavik Intl

Tue 29/9

9:30 a.m.-8:59 a.m.

2 stops30h 29m

C$ 874

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Mon 28/9

12:00 p.m.-7:55 a.m.

3 stops36h 55m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 961

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Thu 15/10

12:16 p.m.-8:50 a.m.

3 stops37h 34m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 965

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sun 4/10

5:45 a.m.-9:30 a.m.

2 stops20h 45m

Reykjavik Keflavik Intl

Mon 12/10

11:25 a.m.-2:50 p.m.

2 stops34h 25m

C$ 997

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

Showing 1-10 of 14 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 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, May is the cheapest month in which you can book a flight from Seattle to Reykjavik Keflavik Intl Airport (average of C$ 752). Flying from Seattle to Reykjavik Keflavik Intl Airport in August is currently the most expensive (average of C$ 1,352). 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$ 849 and C$ 1,055 in December.
The cheapest round-trip price found within the last 5 days was C$ 802 on Icelandair (31 Dec-29 Jan).

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 6 outbound flights to Reykjavik Keflavik Intl per day.

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

    Delta and Virgin Atlantic can get you from Seattle to Reykjavik Keflavik Intl Airport in just under 14h 40m. Your travel time can differ by up to 6h 05m. 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$ 611 for a flight from Seattle to Reykjavik Keflavik Intl Airport. The cheapest flight overall is C$ 349 while the most popular route, (Seattle/Tacoma Intl - Reykjavik Keflavik Intl) is currently priced at C$ 704.

  • 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$ 752). Flying from Seattle to Reykjavik Keflavik Intl Airport in August is currently the most expensive (average of C$ 1,352). 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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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.

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