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Cheap flights from Seattle to Reykjavik Keflavik Intl Airport from C$ 523

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KEF
12 Jan — 19 Jan1
1 adult

Cheap flight deals from Seattle to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Keflavik Intl (KEF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 7 January 2025.

Round-trip from

C$ 962

One-way from

C$ 523

Popular in

December

Cheapest in

May

Average price

C$ 1,141
Delta
  • Delta
  • 2/4-10/4
  • 2 total stops
  • 33h 50m total
  • Seattle to Reykjavik
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WestJet
  • WestJet
  • 14/6
  • 2 total stops
  • 33h 51m total
  • Seattle to Reykjavik
Search Deals
High demand for flights, 1% potential price rise
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Best time to find cheap flights, 0% potential price drop
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Average for round-trip flights in January 2025
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Find flight deals from Seattle to Keflavik Intl

Cheapest flights from Seattle to Keflavik Intl
Explore the most affordable flight options available from Seattle to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 January 2025.

Wed 2/47:15 a.m.SEA - KEF
1 stop19h 15mDelta
Thu 10/411:25 a.m.KEF - SEA
1 stop14h 35mDelta
Deal found 7/1C$ 962
Mon 31/32:15 p.m.SEA - KEF
1 stop15h 50mLufthansa
Mon 7/412:25 a.m.KEF - SEA
2 stops26h 56mLufthansa
Deal found 7/1C$ 973
Tue 29/411:15 a.m.SEA - KEF
1 stop15h 15mMultiple Airlines
Thu 8/511:25 a.m.KEF - SEA
1 stop18h 00mMultiple Airlines
Deal found 7/1C$ 976
Mon 31/38:20 p.m.SEA - KEF
2 stops28h 40mBritish Airways
Mon 7/48:45 a.m.KEF - SEA
2 stops21h 20mBritish Airways
Deal found 7/1C$ 980
Sun 14/911:50 p.m.SEA - KEF
2 stops24h 10mUnited Airlines
Fri 3/1010:00 a.m.KEF - SEA
3 stops36h 05mUnited Airlines
Deal found 7/1C$ 1,008
Wed 22/103:45 p.m.SEA - KEF
Nonstop7h 30mIcelandair
Wed 12/115:05 p.m.KEF - SEA
Nonstop7h 55mIcelandair
Deal found 7/1C$ 1,039
Wed 1/107:05 a.m.SEA - KEF
1 stop18h 25mWestJet
Sat 11/109:50 a.m.KEF - SEA
2 stops33h 43mWestJet
Deal found 7/1C$ 1,052
Fri 2/57:20 a.m.SEA - KEF
1 stop19h 10mKLM
Fri 9/58:50 a.m.KEF - SEA
2 stops20h 35mKLM
Deal found 7/1C$ 1,061
Tue 21/108:20 p.m.SEA - KEF
2 stops28h 40mFinnair
Mon 17/1110:00 a.m.KEF - SEA
2 stops33h 20mFinnair
Deal found 7/1C$ 1,066
Wed 2/47:15 a.m.SEA - KEF
1 stop19h 15mAir France
Tue 8/411:25 a.m.KEF - SEA
2 stops38h 34mAir France
Deal found 7/1C$ 1,088

Find flights from Seattle to Keflavik Intl within your budget

Customize your flight search to find flights from Seattle to Keflavik Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 7 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Wed 2/4

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

1 stop19h 15m

Reykjavik Keflavik Intl

Thu 10/4

11:25 a.m.-7:00 p.m.

1 stop14h 35m

C$ 962

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Mon 31/3

2:15 p.m.-1:05 p.m.

1 stop15h 50m

Reykjavik Keflavik Intl

Mon 7/4

12:25 a.m.-8:21 p.m.

2 stops26h 56m

C$ 973

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Tue 29/4

11:15 a.m.-9:30 a.m.

1 stop15h 15m

Reykjavik Keflavik Intl

Thu 8/5

11:25 a.m.-10:25 p.m.

1 stop18h 00m

C$ 976

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Mon 31/3

8:20 p.m.-8:00 a.m.

2 stops28h 40m

Reykjavik Keflavik Intl

Mon 7/4

8:45 a.m.-11:05 p.m.

2 stops21h 20m

C$ 980

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Tue 27/5

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

Nonstop7h 25m

Reykjavik Keflavik Intl

Mon 2/6

7:45 p.m.-8:40 p.m.

Nonstop7h 55m

C$ 1,055

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Wed 14/5

1:30 p.m.-4:30 p.m.

2 stops20h 00m

Reykjavik Keflavik Intl

Mon 19/5

8:45 a.m.-4:00 p.m.

1 stop14h 15m

C$ 1,058

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Fri 2/5

7:20 a.m.-9:30 a.m.

1 stop19h 10m

Reykjavik Keflavik Intl

Fri 9/5

8:50 a.m.-10:25 p.m.

2 stops20h 35m

C$ 1,061

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Wed 2/4

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

1 stop19h 15m

Reykjavik Keflavik Intl

Tue 8/4

11:25 a.m.-6:59 p.m.

2 stops38h 34m

C$ 1,088

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Mon 26/5

7:05 a.m.-8:30 a.m.

1 stop18h 25m

Reykjavik Keflavik Intl

Tue 3/6

9:50 a.m.-2:09 p.m.

2 stops35h 19m

C$ 1,104

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Mon 16/6

6:31 a.m.-8:35 a.m.

2 stops19h 04m

Reykjavik Keflavik Intl

Sat 28/6

10:00 a.m.-11:16 a.m.

1 stop32h 16m

C$ 1,298

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 19 results
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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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Seattle to Keflavik Intl

Get recent, data-driven insights about flights from Seattle to Keflavik Intl including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Seattle to Reykjavik Keflavik Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Keflavik Intl. Price data was last updated on 3 January 2025.

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 26 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, January is the cheapest month in which you can book a flight from Seattle to Reykjavik Keflavik Intl Airport (average of C$ 268). Flying from Seattle to Reykjavik Keflavik Intl Airport in December is currently the most expensive (average of C$ 593). 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?

Find hourly flight availability from Seattle to Keflavik Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 January 2025.

It’s typically best to fly out from Seattle to Reykjavik Keflavik Intl Airport in the morning. Doing so could potentially save you 13% on the flight price compared to flying at noon, which is usually more expensive.

Rainfall in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Reykjavik Keflavik Intl Airport ranges from 40.0 - 80.0 mm per month. January is typically the wettest month, when rainfall can reach 80.0 mm. May is typically the driest time to visit Reykjavik Keflavik Intl Airport when rainfall is around 40.0 mm.

Temperature in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Reykjavik Keflavik Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 11.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

Reviews of airlines servicing Keflavik Intl

Get insights into the airlines that provide service to Keflavik Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Keflavik Intl. Reviews last updated 7 January 2025.
Delta
8.0
Very good
8,503 reviews
Check prices

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,503 reviews
Delta
8.0
Very good
8,503 reviews
Check prices

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,337 reviews
Delta
8.0
Very good
8,503 reviews
Check prices

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.7
Good
1,281 reviews
Delta
8.0
Very good
8,503 reviews
Check prices

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.5
Good
1,590 reviews
Delta
8.0
Very good
8,503 reviews
Check prices

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,487 reviews
Delta
8.0
Very good
8,503 reviews
Check prices

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Keflavik Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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.

  • What are the cheapest airlines flying from Seattle to Reykjavik Keflavik Intl Airport round-trip?

    According to our current data, Delta (C$ 962), Lufthansa (C$ 973), and British Airways (C$ 980) offers the cheapest pricing from Seattle to Reykjavik Keflavik Intl Airport. You may be able to fly from Seattle to Reykjavik Keflavik Intl Airport for 12% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Seattle to Reykjavik Keflavik Intl Airport one-way?

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at C$ 523. Lufthansa flights start at C$ 686 while deals on SWISS start at C$ 688 one-way.

  • 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 Alaska Airlines (93%), Icelandair (93%) and airBaltic (78%).

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

    On average you can expect to pay C$ 777 for a flight from Seattle to Reykjavik Keflavik Intl Airport. The cheapest flight overall is C$ 390 while the most popular route, (Seattle/Tacoma Intl - Reykjavik Keflavik Intl) is currently priced at C$ 969.

  • 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, January is the cheapest month in which you can book a flight from Seattle to Reykjavik Keflavik Intl Airport (average of C$ 268). Flying from Seattle to Reykjavik Keflavik Intl Airport in December is currently the most expensive (average of C$ 593). 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.

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