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

SEA — KEF
12 Dec — 19 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 13/117:00 a.m. -
1 stop19h 00m
Thu 19/1112:00 p.m. -
1 stop32h 19m
Deal found 8/11C$ 676
Fri 4/127:00 a.m. -
1 stop19h 00m
Thu 10/1212:00 p.m. -
1 stop18h 43m
Deal found 9/11C$ 700
Wed 9/125:05 a.m. -
2 stops20h 55m
Mon 14/1212:00 p.m. -
3 stops19h 44m
Deal found 10/11C$ 706
Thu 12/1110:56 p.m. -
1 stop27h 04m
Thu 19/1112:00 p.m. -
1 stop19h 07m
Deal found 8/11C$ 708
Thu 3/124:04 p.m. -
2 stops33h 56m
Sat 12/1212:00 p.m. -
1 stop31h 44m
Deal found 8/11C$ 715
Tue 1/125:05 a.m. -
2 stops44h 55m
Mon 7/1212:00 p.m. -
1 stop18h 43m
Deal found 8/11C$ 723
Wed 11/1112:20 p.m. -
3 stops61h 40m
Thu 19/1112:00 p.m. -
2 stops17h 19m
Deal found 8/11C$ 731
Fri 13/1110:50 a.m. -
1 stop15h 10m
Thu 19/113:10 p.m. -
1 stop29h 50m
Deal found 10/11C$ 733

Find flight deals from Seattle to Keflavik Intl

Round-trip from

C$ 700

Popular in

August

Cheapest in

May

Average price

C$ 1,084

Good round-trip deal

C$ 766 or less

Good one-way deal

C$ 364 or less
United Airlines
  • United Airlines
  • 4/12-10/12
  • 2 total stops
  • 37h 43m total
  • Seattle to Reykjavik
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Highest demand for flights based on searches. 13% potential increase in price (C$ 226 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 53 potential savings vs. average RT price).
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Average for round-trip flights in November 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 2/12

6:15 a.m.-10:00 a.m.

3 stops19h 45m

Reykjavik Keflavik Intl

Thu 10/12

12:00 p.m.-11:44 p.m.

2 stops19h 44m

C$ 707
Quickest round-trip

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Wed 9/12

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$ 737

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Fri 11/12

6:15 a.m.-10:00 a.m.

2 stops19h 45m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 770

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sun 13/12

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

3 stops20h 55m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 770

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Wed 9/12

6:15 a.m.-10:00 a.m.

3 stops19h 45m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 770

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Fri 4/12

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

1 stop19h 00m

Reykjavik Keflavik Intl

Sun 6/12

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

1 stop28h 40m

C$ 777

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Wed 16/12

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$ 819

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Tue 17/11

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

3 stops37h 40m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 828

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sun 31/1

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

Nonstop7h 40m

Reykjavik Keflavik Intl

Thu 4/2

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

Nonstop8h 00m

C$ 842

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Mon 14/12

7:30 p.m.-10:00 a.m.

2 stops54h 30m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 862

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

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 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$ 775). Flying from Seattle to Reykjavik Keflavik Intl Airport in August is currently the most expensive (average of C$ 1,381). 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$ 842 and C$ 1,451 in December.
The cheapest round-trip price found within the last 5 days was C$ 700 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 1 outbound flight to Reykjavik Keflavik Intl per day.

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

    United Airlines, Icelandair, and Delta can get you from Seattle to Reykjavik Keflavik Intl Airport in just under 7h 40m. Your travel time can differ by up to 12h 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 most reliable airlines from Seattle to Reykjavik Keflavik Intl Airport?

    The top 3 most reliable airlines when flying from Seattle to Reykjavik Keflavik Intl Airport are airBaltic (100%), Icelandair (84%) and Alaska Airlines (80%).

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

    On average you can expect to pay C$ 753 for a flight from Seattle to Reykjavik Keflavik Intl Airport. The cheapest flight overall is C$ 277 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, May is the cheapest month in which you can book a flight from Seattle to Reykjavik Keflavik Intl Airport (average of C$ 775). Flying from Seattle to Reykjavik Keflavik Intl Airport in August is currently the most expensive (average of C$ 1,381). 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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