Cheap flights from Seattle to Keflavik

Round-trip
Economy
Seattle (SEA)
Reykjavik (KEF)
Depart
Return
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How to find the cheapest flight from
Seattle (SEA) to Keflavik (KEF)

All the information you need to plan the best SEA to KEF flight in 2021: compare Seattle to Keflavik flight prices with the expected peak season, weather and rainfall in Keflavik.
SEA - KEF
Price
C$ 719 - C$ 901
KEF
Temperature
3 - 14 °C
KEF
Rainfall
21 - 94 mm

Popular in

December

High demand for flights, 10% potential price rise

Cheapest in

February

Best time to find cheap flights, 12% potential price drop

Round-trip from

C$ 719

From Seattle to Keflavik

One-way from

C$ 641

One-way flight from Seattle to Keflavik

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
How far in advance should I book a flight from Seattle to Keflavik?

To save up to 56% on this flight, we recommend booking at least 33 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Seattle to Keflavik from C$ 852 1-2 weeks out and tickets from C$ 1,143 for flights departing within the next 72 hours.

Cheap flights from Seattle to Keflavik in April, May 2021

The best prices found for SEA to KEF flights for April, May
17 May - 1 Jun
C$ 650pp
SEA
Seattle/Tacoma Intl
Icelandair
Direct
KEF
Reykjavik Keflavik Intl
KEF
Reykjavik Keflavik Intl
Icelandair
Direct
SEA
Seattle/Tacoma Intl
31 May - 5 Jun
C$ 679pp
SEA
Seattle/Tacoma Intl
Icelandair
Direct
KEF
Reykjavik Keflavik Intl
KEF
Reykjavik Keflavik Intl
Icelandair
Direct
SEA
Seattle/Tacoma Intl
29 May - 11 Jun
C$ 681pp
SEA
Seattle/Tacoma Intl
Delta
 
1 STOP
KEF
Reykjavik Keflavik Intl
KEF
Reykjavik Keflavik Intl
Delta
 
1 STOP
SEA
Seattle/Tacoma Intl

Seattle to Keflavik 2021 flight deals

Cheap flights to Keflavik from Seattle found for this year
29 Jun - 21 Aug
C$ 624pp
SEA
Seattle/Tacoma Intl
Icelandair
Direct
KEF
Reykjavik Keflavik Intl
KEF
Reykjavik Keflavik Intl
Icelandair
Direct
SEA
Seattle/Tacoma Intl
22 Nov - 30 Nov
C$ 628pp
SEA
Seattle/Tacoma Intl
Delta
 
1 STOP
KEF
Reykjavik Keflavik Intl
KEF
Reykjavik Keflavik Intl
Delta
 
1 STOP
SEA
Seattle/Tacoma Intl
22 Nov - 30 Nov
C$ 633pp
SEA
Seattle/Tacoma Intl
Delta
   
2 STOPS
KEF
Reykjavik Keflavik Intl
KEF
Reykjavik Keflavik Intl
Delta
   
2 STOPS
SEA
Seattle/Tacoma Intl

Direct flights to Keflavik from Seattle

Save time with Seattle to Keflavik direct flight deals
29 Jun - 21 Aug
C$ 624pp
SEA
Seattle/Tacoma Intl
Icelandair
Direct
KEF
Reykjavik Keflavik Intl
KEF
Reykjavik Keflavik Intl
Icelandair
Direct
SEA
Seattle/Tacoma Intl
4 Jul - 21 Aug
C$ 650pp
SEA
Seattle/Tacoma Intl
Icelandair
Direct
KEF
Reykjavik Keflavik Intl
KEF
Reykjavik Keflavik Intl
Icelandair
Direct
SEA
Seattle/Tacoma Intl
1 Aug - 16 Aug
C$ 651pp
SEA
Seattle/Tacoma Intl
Icelandair
Direct
KEF
Reykjavik Keflavik Intl
KEF
Reykjavik Keflavik Intl
Icelandair
Direct
SEA
Seattle/Tacoma Intl

One-way flights to Keflavik from Seattle

The cheapest one-way flights from Seattle to Keflavik
11:50 a.m. - 2:15 a.m.
Icelandair
Direct
7h 25m
SEA - KEF
Icelandair
C$ 641
3:55 a.m. - 2:10 a.m.
Multiple Airlines
1 stop
15h 15m
SEA - KEF
Multiple Airlines
C$ 768
4:30 a.m. - 8:10 a.m.
Lufthansa
2 stops
20h 40m
SEA - KEF
Lufthansa
C$ 1,234
Lufthansa

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">Keflavik</span> flights.

Flight FAQs

From Seattle to Keflavik

Can I find flights from Seattle to Keflavik for under C$ 628 on Cheapflights?

Yes, there are multiple flights from Seattle to Keflavik for under C$ 628. The cheapest flight booked recently is on Icelandair for just C$ 624, but on average you can expect to pay C$ 689.

Which airlines flying from Seattle/Tacoma Intl to Reykjavik Keflavik Intl have flexible cancellations due to COVID-19?

Some of our airline partners flying from Seattle/Tacoma Intl to Reykjavik Keflavik Intl have new flexible policies in place due to COVID-19. Icelandair and United Airlines are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like Icelandair with this kind of flexibility.

Are there direct flights from Seattle to Keflavik for under C$ 628 on Cheapflights?

Cheapflights has 20 direct flights from Seattle to Keflavik under C$ 628. A good price for a direct flight from Seattle to Keflavik is less than C$ 726.

Does it rain more in Seattle or Keflavik?

Seattle will have greater rainfall in 0 compared to Keflavik over the next 20 days.

Is Seattle weather warmer or cooler than Keflavik?

Temperatures around the 25 °C's can be experienced in July. The weather in Keflavik is colder than in Seattle. Plan for potential changes in flight availability as peak weather approaches in this location.

How long is the flight from Seattle to Keflavik?

A quick flight from Seattle to Keflavik can take about 7h 25m. Icelandair provides one of the quickest options available for as low as C$ 625. This flight may include one or multiple stops.

What are the cheapest airlines to flying from Seattle to Keflavik round-trip?

Cheapflights users have booked flights from Seattle to Keflavik round-trip from C$ 625. Other airlines that can offer you cheap pricing are Delta, from C$ 682, and United Airlines, from C$ 699. Users have found that Icelandair is 23% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Seattle to Keflavik one-way?

To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at C$ 641. Delta flights start at C$ 684 while deals on Lufthansa start at C$ 1,234 one-way.

Related searches

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Rent a Car

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Destination information for Keflavik

Things to know before you go - useful duration and weather info for your trip from Seattle to Keflavik.
Today's exchange rate
C$ 1 = 101 kr
Flight duration
7h 40m
Average temperature for April in Keflavik
6.0 °C
Avg rainfall for April in Keflavik
39.0 mm

Airports servicing Seattle

Airports servicing Reykjavik

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