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Cheap flights from Seattle to Reykjavik Keflavik Intl Airport from C$ 676

SEA — KEF
20 Sep — 27 Sep1
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

Mon 12/103:40 p.m. -
Nonstop7h 35m
Fri 23/107:45 p.m. -
Nonstop7h 55m
Deal found 20/8C$ 813
Mon 12/103:40 p.m. -
Nonstop7h 35m
Thu 5/115:00 p.m. -
Nonstop8h 00m
Deal found 19/8C$ 815
Fri 30/103:35 p.m. -
Nonstop7h 40m
Thu 5/115:00 p.m. -
Nonstop8h 00m
Deal found 20/8C$ 816
Thu 20/811:25 p.m. -
Nonstop7h 35m
Tue 25/810:40 a.m. -
Nonstop8h 05m
Deal found 20/8C$ 829
Sat 22/811:25 p.m. -
Nonstop7h 35m
Thu 27/84:50 p.m. -
Nonstop8h 05m
Deal found 21/8C$ 831
Thu 20/811:25 p.m. -
Nonstop7h 35m
Mon 31/810:40 a.m. -
Nonstop8h 05m
Deal found 21/8C$ 833
Fri 25/95:45 a.m. -
2 stops18h 15m
Thu 1/109:30 a.m. -
1 stop18h 06m
Deal found 19/8C$ 835
Thu 24/95:59 p.m. -
1 stop30h 01m
Thu 1/109:30 a.m. -
1 stop34h 28m
Deal found 18/8C$ 838
Fri 25/95:45 a.m. -
2 stops18h 15m
Thu 1/109:30 a.m. -
1 stop32h 09m
Deal found 21/8C$ 840
Wed 30/96:00 a.m. -
1 stop18h 00m
Thu 15/1011:25 a.m. -
1 stop15h 44m
Deal found 18/8C$ 848
Sat 22/87:15 a.m. -
1 stop19h 15m
Thu 27/89:30 a.m. -
1 stop18h 20m
Deal found 19/8C$ 852
Wed 30/95:45 a.m. -
2 stops18h 15m
Thu 15/1011:25 a.m. -
1 stop18h 39m
Deal found 16/8C$ 853

Find flight deals from Seattle to Keflavik Intl

Round-trip from

C$ 813

One-way from

C$ 676

Popular in

August

Cheapest in

May

Average price

C$ 1,346

Good round-trip deal

C$ 790 or less

Good one-way deal

C$ 348 or less
Icelandair
  • Icelandair
  • 12/10-23/10
  • Nonstop
  • 15h 30m total
  • Seattle to Reykjavik
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1/10
  • 1/10
  • 3 total stops
  • 41h 25m total
  • Seattle to Reykjavik
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Highest demand for flights based on searches. 13% potential increase in price (C$ 199 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 49 potential savings vs. average RT price).
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Average for round-trip flights in August 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

Sat 17/10

7:00 p.m.-9:25 a.m.

Nonstop7h 25m

Reykjavik Keflavik Intl

Wed 21/10

4:50 p.m.-5:55 p.m.

Nonstop8h 05m

C$ 813

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sat 9/1

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

Nonstop7h 40m

Reykjavik Keflavik Intl

Tue 19/1

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

Nonstop8h 00m

C$ 816

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sat 9/1

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

Nonstop7h 40m

Reykjavik Keflavik Intl

Thu 14/1

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

Nonstop8h 00m

C$ 816

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Thu 1/10

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

1 stop18h 00m

Reykjavik Keflavik Intl

Tue 6/10

11:25 a.m.-11:04 p.m.

1 stop18h 39m

C$ 848

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Thu 24/9

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$ 855

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Mon 14/9

10:40 p.m.-9:30 a.m.

1 stop27h 50m

Reykjavik Keflavik Intl

Fri 18/9

11:25 a.m.-8:21 p.m.

1 stop15h 56m

C$ 1,030

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Wed 2/9

5:13 p.m.-8:50 a.m.

1 stop32h 37m

Reykjavik Keflavik Intl

Wed 9/9

9:15 a.m.-3:46 p.m.

2 stops37h 31m

C$ 1,060

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Wed 30/9

11:13 p.m.-7:55 a.m.

2 stops25h 42m

Reykjavik Keflavik Intl

Thu 15/10

12:00 p.m.-6:52 p.m.

1 stop13h 52m

C$ 1,060

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Tue 1/12

6:51 p.m.-10:00 a.m.

2 stops31h 09m

Reykjavik Keflavik Intl

Mon 7/12

12:00 p.m.-6:59 p.m.

1 stop14h 59m

C$ 1,062
Cheapest one-way
Quickest one-way

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sat 29/8

6:35 p.m.-9:00 a.m.

Nonstop7h 25m

C$ 722

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/8

Showing 1-10 of 18 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, May is the cheapest month in which you can book a flight from Seattle to Reykjavik Keflavik Intl Airport (average of C$ 751). Flying from Seattle to Reykjavik Keflavik Intl Airport in August is currently the most expensive (average of C$ 1,346). 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$ 948 and C$ 1,428 in October.
The cheapest round-trip price found within the last 5 days was C$ 813 on Icelandair (12 Oct-23 Oct).

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?

    Icelandair and Delta can get you from Seattle to Reykjavik Keflavik Intl Airport in just under 7h 25m. Your travel time can differ by up to 10h 35m. 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$ 679 for a flight from Seattle to Reykjavik Keflavik Intl Airport. The cheapest flight overall is C$ 290 while the most popular route, (Seattle/Tacoma Intl - Reykjavik Keflavik Intl) is currently priced at C$ 703.

  • 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$ 751). Flying from Seattle to Reykjavik Keflavik Intl Airport in August is currently the most expensive (average of C$ 1,346). 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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Can Cheapflights notify me if prices for flights from Seattle to Keflavik Intl become cheaper?

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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