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Cheap flights from Seattle to Reykjavik Keflavik Intl Airport from C$ 731

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 27/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KEF
11 Feb — 18 Feb1
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 6 February 2025.

Round-trip from

C$ 933

One-way from

C$ 731

Popular in

December

Cheapest in

May

Average price

C$ 1,063

Good round-trip deal

C$ 759 or less

Good one-way deal

C$ 474 or less
Lufthansa
  • Lufthansa
  • 3/3-12/3
  • 4 total stops
  • 94h 25m total
  • Seattle to Reykjavik
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KLM
  • KLM
  • 27/4
  • 1 total stop
  • 15h 06m total
  • Seattle to Reykjavik
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease (C$ 10 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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.
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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 6 February 2025.

Mon 3/32:00 p.m.SEA - KEF
2 stops39h 20mLufthansa
Wed 12/32:15 p.m.KEF - SEA
2 stops55h 05mLufthansa
Deal found 6/2C$ 933
Tue 8/47:10 a.m.SEA - KEF
1 stop19h 20mMultiple Airlines
Thu 17/411:25 a.m.KEF - SEA
1 stop18h 19mMultiple Airlines
Deal found 6/2C$ 938
Thu 1/511:24 a.m.SEA - KEF
1 stop15h 06mAir France
Thu 8/511:25 a.m.KEF - SEA
2 stops39h 59mAir France
Deal found 6/2C$ 940
Sun 20/47:18 a.m.SEA - KEF
1 stop19h 12mDelta
Mon 28/411:25 a.m.KEF - SEA
1 stop15h 38mDelta
Deal found 6/2C$ 941
Sun 23/26:50 p.m.SEA - KEF
1 stop32h 05mBritish Airways
Thu 6/311:40 a.m.KEF - SEA
1 stop31h 40mBritish Airways
Deal found 5/2C$ 956
Tue 19/87:20 a.m.SEA - KEF
1 stop18h 15mUnited Airlines
Tue 26/812:00 p.m.KEF - SEA
1 stop17h 29mUnited Airlines
Deal found 6/2C$ 1,010
Tue 4/36:50 p.m.SEA - KEF
2 stops30h 25mFinnair
Tue 11/310:00 a.m.KEF - SEA
2 stops38h 55mFinnair
Deal found 6/2C$ 1,036
Sat 16/811:30 p.m.SEA - KEF
Nonstop7h 30mIcelandair
Sat 23/810:30 a.m.KEF - SEA
Nonstop7h 55mIcelandair
Deal found 6/2C$ 1,089
Tue 15/412:55 p.m.SEA - KEF
2 stops36h 25mSWISS
Thu 24/49:05 a.m.KEF - SEA
2 stops40h 56mSWISS
Deal found 6/2C$ 1,120
Sat 24/59:20 p.m.SEA - KEF
2 stops27h 55mWestJet
Thu 29/59:35 a.m.KEF - SEA
1 stop17h 53mWestJet
Deal found 6/2C$ 1,209

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 6 February 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Mon 3/3

2:00 p.m.-1:20 p.m.

2 stops39h 20m

Reykjavik Keflavik Intl

Wed 12/3

2:15 p.m.-2:20 p.m.

2 stops55h 05m

C$ 933

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Tue 8/4

7:10 a.m.-9:30 a.m.

1 stop19h 20m

Reykjavik Keflavik Intl

Thu 17/4

11:25 a.m.-10:44 p.m.

1 stop18h 19m

C$ 938

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Thu 1/5

11:24 a.m.-9:30 a.m.

1 stop15h 06m

Reykjavik Keflavik Intl

Thu 8/5

11:25 a.m.-8:24 p.m.

2 stops39h 59m

C$ 940

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Sun 20/4

7:18 a.m.-9:30 a.m.

1 stop19h 12m

Reykjavik Keflavik Intl

Mon 28/4

11:25 a.m.-8:03 p.m.

1 stop15h 38m

C$ 941

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Sun 23/2

6:50 p.m.-10:55 a.m.

1 stop32h 05m

Reykjavik Keflavik Intl

Thu 6/3

11:40 a.m.-11:20 a.m.

1 stop31h 40m

C$ 956

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Tue 4/3

6:50 p.m.-9:15 a.m.

2 stops30h 25m

Reykjavik Keflavik Intl

Tue 11/3

10:00 a.m.-5:55 p.m.

2 stops38h 55m

C$ 1,036

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Tue 25/2

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

Nonstop7h 40m

Reykjavik Keflavik Intl

Wed 5/3

5:05 p.m.-5:00 p.m.

Nonstop7h 55m

C$ 1,106

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Tue 15/4

12:55 p.m.-8:20 a.m.

2 stops36h 25m

Reykjavik Keflavik Intl

Thu 24/4

9:05 a.m.-7:01 p.m.

2 stops40h 56m

C$ 1,120

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Sat 24/5

9:20 p.m.-8:15 a.m.

2 stops27h 55m

Reykjavik Keflavik Intl

Thu 29/5

9:35 a.m.-8:28 p.m.

1 stop17h 53m

C$ 1,209

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Wed 30/7

5:07 a.m.-8:30 a.m.

2 stops20h 23m

Reykjavik Keflavik Intl

Sat 9/8

10:00 a.m.-12:08 a.m.

2 stops21h 08m

C$ 1,239

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/2

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 31 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 44 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 6 February 2025.

It’s typically best to fly out from Seattle to Reykjavik Keflavik Intl Airport in the morning. Doing so could potentially save you 18% on the flight price compared to flying in the afternoon, 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 6 February 2025.
See what other customers who have flown with Emirates, Alaska Airlines and Delta from Seattle to Reykjavik have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.1
Very good
3,303 reviews
Check prices

Crew

8.3

Boarding

8.1

Comfort

8.0

Food

7.9

Overall

8.1

Entertainment

8.2

Reviews

1 / 20

4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Emirates
8.1
Very good
3,303 reviews
Emirates
8.1
Very good
3,303 reviews
Check prices

Crew

8.3

Boarding

8.1

Comfort

8.0

Food

7.9

Overall

8.1

Entertainment

8.2

Reviews

1 / 20

4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Alaska Airlines
8.0
Very good
9,696 reviews
Emirates
8.1
Very good
3,303 reviews
Check prices

Crew

8.3

Boarding

8.1

Comfort

8.0

Food

7.9

Overall

8.1

Entertainment

8.2

Reviews

1 / 20

4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Delta
8.0
Very good
8,396 reviews
Emirates
8.1
Very good
3,303 reviews
Check prices

Crew

8.3

Boarding

8.1

Comfort

8.0

Food

7.9

Overall

8.1

Entertainment

8.2

Reviews

1 / 20

4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

KLM
7.8
Good
1,332 reviews
Emirates
8.1
Very good
3,303 reviews
Check prices

Crew

8.3

Boarding

8.1

Comfort

8.0

Food

7.9

Overall

8.1

Entertainment

8.2

Reviews

1 / 20

4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Finnair
7.6
Good
1,284 reviews
Emirates
8.1
Very good
3,303 reviews
Check prices

Crew

8.3

Boarding

8.1

Comfort

8.0

Food

7.9

Overall

8.1

Entertainment

8.2

Reviews

1 / 20

4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

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 0 outbound flights 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, Lufthansa (C$ 933), Air France (C$ 940), and Delta (C$ 941) 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 14% 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 KLM, which is currently one of the cheapest options available, starting at C$ 731. WestJet flights start at C$ 744 while deals on Icelandair start at C$ 773 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 (90%), Icelandair (90%) and airBaltic (79%).

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

    On average you can expect to pay C$ 1,723 for a flight from Seattle to Reykjavik Keflavik Intl Airport. The cheapest flight overall is C$ 474 while the most popular route, (Seattle/Tacoma Intl - Reykjavik Keflavik Intl) is currently priced at C$ 1,069.

  • 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.

See more FAQs

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