Find flights
Deals
When to book
FAQs

Cheap flights from Seattle to Reykjavik Keflavik Intl Airport from C$ 604

SEA — KEF
17 Oct — 24 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

Sun 4/1012:00 p.m. -
1 stop12h 00m
Fri 16/1011:25 a.m. -
1 stop18h 39m
Deal found 13/9C$ 660
Tue 15/911:50 a.m. -
1 stop14h 40m
Mon 21/99:30 a.m. -
1 stop21h 25m
Deal found 14/9C$ 678
Wed 16/911:50 a.m. -
1 stop14h 40m
Wed 23/99:30 a.m. -
1 stop14h 15m
Deal found 14/9C$ 679
Fri 9/109:35 p.m. -
2 stops52h 55m
Fri 16/1011:25 a.m. -
1 stop15h 44m
Deal found 14/9C$ 686
Sat 17/1011:50 a.m. -
1 stop14h 40m
Sat 24/1011:25 a.m. -
1 stop18h 39m
Deal found 14/9C$ 759
Fri 16/109:45 a.m. -
2 stops16h 45m
Fri 23/1011:25 a.m. -
1 stop18h 39m
Deal found 12/9C$ 766
Fri 16/1010:59 p.m. -
1 stop27h 31m
Sat 24/1011:25 a.m. -
1 stop18h 39m
Deal found 12/9C$ 770
Thu 17/912:00 p.m. -
1 stop12h 00m
Thu 24/911:25 a.m. -
1 stop18h 55m
Deal found 14/9C$ 778
Fri 9/109:35 p.m. -
2 stops52h 55m
Wed 21/1011:25 a.m. -
2 stops29h 38m
Deal found 14/9C$ 785

Find flight deals from Seattle to Keflavik Intl

Round-trip from

C$ 660

One-way from

C$ 604

Popular in

August

Cheapest in

May

Average price

C$ 983

Good round-trip deal

C$ 699 or less

Good one-way deal

C$ 428 or less
Delta
  • Delta
  • 4/10-16/10
  • 2 total stops
  • 30h 39m total
  • Seattle to Reykjavik
Search Deals
13/12-31/12
  • 13/12-31/12
  • 3 total stops
  • 37h 05m total
  • Seattle to Reykjavik
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 221 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Reykjavik Keflavik Intl.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Reykjavik Keflavik Intl.
Search Deals

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 17/10

7:15 a.m.-9:30 a.m.

1 stop19h 15m

Reykjavik Keflavik Intl

Sat 24/10

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

1 stop18h 39m

C$ 759

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Tue 6/10

6:00 a.m.-9:30 a.m.

2 stops20h 30m

Reykjavik Keflavik Intl

Thu 15/10

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

1 stop18h 39m

C$ 766

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sun 29/11

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

2 stops20h 55m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 768

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sat 31/10

11:59 p.m.-10:00 a.m.

2 stops27h 01m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 768

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sat 28/11

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

2 stops44h 55m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 800

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Fri 30/10

7:04 p.m.-10:00 a.m.

2 stops55h 56m

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 30/11

3:49 p.m.-10:00 a.m.

2 stops58h 11m

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

Sat 26/12

11:58 p.m.-10:00 a.m.

2 stops26h 02m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 817

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Sat 27/2

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$ 840
Quickest round-trip

SeattleReykjavik

SEA Seattle/Tacoma Intl - KEF Reykjavik Keflavik Intl

SEAKEF

Seattle/Tacoma Intl

Thu 15/10

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

Nonstop7h 25m

Reykjavik Keflavik Intl

Wed 31/12

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

Nonstop0h 00m

C$ 840

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/9

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

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$ 760). Flying from Seattle to Reykjavik Keflavik Intl Airport in August is currently the most expensive (average of C$ 1,365). 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$ 876 and C$ 1,121 in October.
The cheapest round-trip price found within the last 5 days was C$ 660 on Delta (4 Oct-16 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 3 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 19h 15m. Your travel time can differ by up to 1h 15m. 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$ 586 for a flight from Seattle to Reykjavik Keflavik Intl Airport. The cheapest flight overall is C$ 414 while the most popular route, (Seattle/Tacoma Intl - Reykjavik Keflavik Intl) is currently priced at C$ 711.

  • 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$ 760). Flying from Seattle to Reykjavik Keflavik Intl Airport in August is currently the most expensive (average of C$ 1,365). 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

Browse thousands of different options on Cheapflights for your next trip

Fly with Cheapflights

How does Cheapflights help users find flights from Seattle to Keflavik Intl?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Keflavik Intl from Seattle today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Seattle to Keflavik Intl?

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Keflavik Intl for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Seattle to Keflavik Intl with no change fees?

Yes! Cheapflights helps users easily find flights from Seattle to Keflavik Intl with no change fees.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.