Find Cheap Flights from Seattle/Tacoma Intl to Reykjavik Keflavik Intl (SEA - KEF)

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Fri 1/19
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Good to Know

Low Season:
October
Best time to beat the crowds
2%
expected price decrease
High Season:
December
Most popular time to fly
2%
expected price increase
Average Price:
$935
(avg. price over the last 2 weeks)
Good Deal:
$596
or less (round trip)

When to Book Flights from Seattle/Tacoma Intl to Reykjavik Keflavik Intl

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $595 or less.
The cheapest flight from Seattle/Tacoma Intl to Reykjavik Keflavik Intl was found 85 days before departure, on average.
Book at least 5 weeks before departure in order to get a below-average price.
Morning departure is around 43% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Seattle/Tacoma Intl to Reykjavik Keflavik Intl Flights

How long does a flight from Seattle/Tacoma Intl to Reykjavik Keflavik Intl take?
An average nonstop flight takes 7h 15m, covering a distance of 3611 miles.
How many flights are there between Seattle/Tacoma Intl and Reykjavik Keflavik Intl?
There are 14 (nonstop) flights between Seattle/Tacoma Intl and Reykjavik Keflavik Intl per week, averaging 2 per day.
Which airlines provide the cheapest flights from Seattle/Tacoma Intl to Reykjavik Keflavik Intl?
In the past 3 days, the cheapest round-trip tickets were found on Icelandair ($530), Multiple Airlines ($552) and American Airlines ($582).
Do I need a passport to fly between Seattle/Tacoma Intl and Reykjavik Keflavik Intl?
Yes.
Which airlines fly most frequently between Seattle/Tacoma Intl and Reykjavik Keflavik Intl?
Icelandair (2 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Seattle/Tacoma Intl to Reykjavik Keflavik Intl?
For Seattle/Tacoma Intl to Reykjavik Keflavik Intl, Sunday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from Reykjavik Keflavik Intl back to Seattle/Tacoma Intl, the best deals are generally found on Tuesday, with Sunday being the most expensive.

Book cheap flights from Seattle/Tacoma Intl to Reykjavik Keflavik Intl (round-trip)

Airports
Origin
Seattle
$530
only
$530
Destination
Reykjavik
$530
only
$530
Sun, Apr 15
SEA
KEF
7h 15m
Wed, Apr 18
KEF
SEA
7h 45m
Trip: 4 days
7.5GoodShow reviews
Overall 7.5 Good
Based on 190 reviews
Overall
7.6
Boarding
7.3
Comfort
7.4
Crew
8.1
Entertainment
7.7
Food
6.3
SEA
KEF
Good 7.0

The handling of the missed connection and rebooking on another flight.Great frequent updates from the ground crew RE the delay in departure.

Flight crew moderately friendly.

SEA
KEF
Mediocre 3.0

Have to pay for food. Uncomfortable seats.

SEA
KEF
Mediocre 3.3

And super uncomfortably tight seating. Thank goodness for sleeping pills

SEA
KEF
Okay 5.6

The movie selection was good.

The seats are horrible. The only seats that are more uncomfortable are on Frontier, and these are Frontier seats with an extra “pad” on top. There was also no leg room whatsoever. I think my tray table was also slanted because I set my drink down on it and it slid right off into my lap.

SEA
KEF
Excellent 10.0

The aircraft, crew, and entertainment were excellent. We knew that food was available for sale so we prepared a picnic lunch. All of the usual soft drinks were complementary. Boarding was organized and timely at both locations.

Cold weather and snow on Iceland meant that all aircraft needed to be de iced which took up some time. That is not the fault of the airline.

Tue, Mar 6
SEA
KEF
14h 05m
Fri, Mar 9
KEF
SEA
16h 25m
Trip: 4 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Jul 31
SEA
KEF
19h 15m
Tue, Aug 21
KEF
SEA
16h 50m
Trip: 22 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27289 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
SJU
MIA
Okay 5.0

The crew are always excellent.

The comfort is horrible. Airline companies keep shrinking the seats and charging more. Also they keep serving less food. And flight changes.

DCA
MIA
Excellent 10.0

The wait time for the connection was not too long. But on the way back to the US, I almost missed my flight from Miami to Washington-DC because I didint have enough time to go though imigration and also had to wait for my luggages. Thank you!

PDX
DFW
Excellent 8.6

Seats smaller than before.

ORD
LGA
Okay 5.3

Gates, delays, changes

Boarding was a mess. No opportunity for priority boarding. Flight crew no help. Just another hum drum experience.

CLT
LHR
Okay 5.0

We didn’t crash

Pushed out of my seat by huge man next to me who ate smelly crisps and farted most of the trip

Fri, Jun 1
SEA
KEF
12h 10m
Thu, Jun 7
KEF
SEA
11h 30m
Trip: 7 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 15283 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
ATL
CTG
Mediocre 2.0

---

Delayed, for close to 6 hours and missed our connection

MSP
CUN
Good 6.0

Flight was fine. They were especially generous with the snacks.

My one complaint is the bathroom layout of the A320. Two tiny closet bathrooms in the back for all of coach and a much larger one much larger one first class (which is like 5 rows with a mesh curtain for separation). The coach bathrooms are so small a normal person can barely get in and turn around to close the door. I question whether a larger person would be able to actually use them. I also saw the flight attendant actively turn away coach passengers trying to use the first class bathroom when it was open (not standing in the aisle or anything annoying like that). That's ridiculous to have 2 tiny bathrooms for all of coach and also to make people walk all the way to the back of the plane when you are seated much closer to the first class bathroom.

ATL
HOU
Excellent 10.0

Nice flight and good staff and service

BWI
ATL
Okay 5.0

The crew was very nice and attentative.

The amount of delays causing us to miss our connection and be stuck in another city for a night before getting to our destination the next day(hopefully).

IAD
DTW
Mediocre 2.0

Seeing as I’m still waiting for my flight, more than five hours later I am not inclined to rank it highly. This airport is an embarrassment and I will try my best to never fly Delta again. Weather is no excuse for this.

Tue, May 15
SEA
KEF
7h 15m
Tue, May 22
KEF
SEA
7h 45m
Trip: 8 days
7.5GoodShow reviews
Overall 7.5 Good
Based on 190 reviews
Overall
7.6
Boarding
7.3
Comfort
7.4
Crew
8.1
Entertainment
7.7
Food
6.3
SEA
KEF
Good 7.6

Stopover at Rejyavik and the Icelandic cultural experience on board

SEA
KEF
Mediocre 3.0

Have to pay for food. Uncomfortable seats.

SEA
KEF
Mediocre 3.0

It was very cold in the cabin.

SEA
KEF
Okay 4.0

The airline charged me $95 to check a single bag after refusing to honor the fee I paid to a third party when I booked the flight. Avoid Icelandair and Justfly.

SEA
KEF
Excellent 10.0

The aircraft, crew, and entertainment were excellent. We knew that food was available for sale so we prepared a picnic lunch. All of the usual soft drinks were complementary. Boarding was organized and timely at both locations.

Cold weather and snow on Iceland meant that all aircraft needed to be de iced which took up some time. That is not the fault of the airline.

Sat, Feb 3
SEA
KEF
14h 05m
Sat, Feb 10
KEF
SEA
15h 07m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Jun 4
SEA
KEF
17h 40m
Wed, Jun 20
KEF
SEA
15h 20m
Trip: 17 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 15283 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
LIM
ATL
Excellent 8.0

The crew, food, plane, everything was excellent

ATL
HOU
Excellent 10.0

Nice flight and good staff and service

IAD
DTW
Mediocre 2.0

Seeing as I’m still waiting for my flight, more than five hours later I am not inclined to rank it highly. This airport is an embarrassment and I will try my best to never fly Delta again. Weather is no excuse for this.

BWI
ATL
Okay 5.0

The crew was very nice and attentative.

The amount of delays causing us to miss our connection and be stuck in another city for a night before getting to our destination the next day(hopefully).

ATL
CTG
Mediocre 2.0

---

Delayed, for close to 6 hours and missed our connection

Mon, May 7
SEA
KEF
7h 15m
Mon, May 21
KEF
SEA
7h 45m
Trip: 15 days
7.5GoodShow reviews
Overall 7.5 Good
Based on 190 reviews
Overall
7.6
Boarding
7.3
Comfort
7.4
Crew
8.1
Entertainment
7.7
Food
6.3
SEA
KEF
Excellent 10.0

The aircraft, crew, and entertainment were excellent. We knew that food was available for sale so we prepared a picnic lunch. All of the usual soft drinks were complementary. Boarding was organized and timely at both locations.

Cold weather and snow on Iceland meant that all aircraft needed to be de iced which took up some time. That is not the fault of the airline.

SEA
KEF
Mediocre 3.0

Have to pay for food. Uncomfortable seats.

SEA
KEF
Excellent 8.0

Seats weren't too cramped, flight was smooth

Entertainment: Not a huge selection of recent movies or any games

SEA
KEF
Mediocre 3.0

It was very cold in the cabin.

SEA
KEF
Good 7.6

Stopover at Rejyavik and the Icelandic cultural experience on board

Mon, Jul 30
SEA
KEF
21h 05m
Thu, Aug 9
KEF
SEA
15h 19m
Trip: 11 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27289 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
ORD
LGA
Okay 5.3

Gates, delays, changes

Boarding was a mess. No opportunity for priority boarding. Flight crew no help. Just another hum drum experience.

SJU
MIA
Okay 5.0

The crew are always excellent.

The comfort is horrible. Airline companies keep shrinking the seats and charging more. Also they keep serving less food. And flight changes.

MIA
GUA
Mediocre 2.3

Nothing, American Airlines is the worst major airline now.

The staff in Miami Airport is really bad, worst attitude I have seen, old planes, not comfortable, definetly the worst major airline now.

CLT
LHR
Okay 5.0

We didn’t crash

Pushed out of my seat by huge man next to me who ate smelly crisps and farted most of the trip

LAX
MIA
Excellent 10.0

Courteous and efficient service, good communication from employees.

Rude passengers reclining all the way without notice.

Mon, Jul 2
SEA
KEF
10h 40m
Wed, Jul 11
KEF
SEA
18h 07m
Trip: 10 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 15283 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
IAD
ATL
Excellent 8.0

My flight was canceled but Delta rebooked me on a flight leaving at about the same time as my original flight, which arrived just a little later than originally anticipated

My original flight was canceled

LIM
ATL
Excellent 8.0

The crew, food, plane, everything was excellent

MSP
CUN
Good 6.0

Flight was fine. They were especially generous with the snacks.

My one complaint is the bathroom layout of the A320. Two tiny closet bathrooms in the back for all of coach and a much larger one much larger one first class (which is like 5 rows with a mesh curtain for separation). The coach bathrooms are so small a normal person can barely get in and turn around to close the door. I question whether a larger person would be able to actually use them. I also saw the flight attendant actively turn away coach passengers trying to use the first class bathroom when it was open (not standing in the aisle or anything annoying like that). That's ridiculous to have 2 tiny bathrooms for all of coach and also to make people walk all the way to the back of the plane when you are seated much closer to the first class bathroom.

DCA
ATL
Excellent 10.0

Very grateful they moved me to an earlier flight when mine was delayed due to weather. Impressed with entertainment options.

SCL
ATL
Good 7.0

Customs officials are incredibly un-helpful and slow. I almost missed the next flight because of how slow was that part. I hope Delta can speak up for the passengers, because we cannot express that to these rude people.

Sun, Mar 4
SEA
KEF
21h 15m
Fri, Mar 9
KEF
SEA
7h 50m
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Jun 20
SEA
KEF
21h 05m
Thu, Jul 12
KEF
SEA
14h 39m
Trip: 23 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27289 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
ORD
MCO
Okay 4.6

American continues to surprise through their lack of consideration and cheapness Prefer to have seat empty on the front rather than move passengers that are loyal frequent flyers. The most important point for American is you have to pay for everything including for flight status. No longer miles flew but how much you pay them

ORD
LGA
Okay 5.3

Gates, delays, changes

Boarding was a mess. No opportunity for priority boarding. Flight crew no help. Just another hum drum experience.

CLT
LHR
Okay 5.0

We didn’t crash

Pushed out of my seat by huge man next to me who ate smelly crisps and farted most of the trip

LIM
CLO
Excellent 8.0

The entertainment screens did not work in my seat and my wife's seat.

DUB
PHL
Excellent 8.6

Smooth boarding, the crew was really nice (and it didn't hurt that they were generous with the wine).

Mon, Jan 29
SEA
KEF
7h 20m
Mon, Mar 5
KEF
SEA
7h 50m
Trip: 36 days
7.5GoodShow reviews
Overall 7.5 Good
Based on 190 reviews
Overall
7.6
Boarding
7.3
Comfort
7.4
Crew
8.1
Entertainment
7.7
Food
6.3
SEA
KEF
Okay 5.6

The movie selection was good.

The seats are horrible. The only seats that are more uncomfortable are on Frontier, and these are Frontier seats with an extra “pad” on top. There was also no leg room whatsoever. I think my tray table was also slanted because I set my drink down on it and it slid right off into my lap.

SEA
KEF
Good 7.6

Stopover at Rejyavik and the Icelandic cultural experience on board

SEA
KEF
Excellent 10.0

The people, the small town, fully deck out for the Holidays Beautiful old buildings. Stayed at the Radison Blu! Fabulous, room came with over the top The Blue Lagoon natural spa! I will go again just for that.

Cold! But beautiful! I want to go in the summer next time. Expensive!

SEA
KEF
Okay 4.0

The airline charged me $95 to check a single bag after refusing to honor the fee I paid to a third party when I booked the flight. Avoid Icelandair and Justfly.

SEA
KEF
Excellent 9.6

Free Hot drink, Headrest entertainment

No peanuts...I dont really care

Tue, Apr 10
SEA
KEF
7h 15m
Sat, Apr 21
KEF
SEA
7h 45m
Trip: 12 days
7.5GoodShow reviews
Overall 7.5 Good
Based on 190 reviews
Overall
7.6
Boarding
7.3
Comfort
7.4
Crew
8.1
Entertainment
7.7
Food
6.3
SEA
KEF
Excellent 10.0

The aircraft, crew, and entertainment were excellent. We knew that food was available for sale so we prepared a picnic lunch. All of the usual soft drinks were complementary. Boarding was organized and timely at both locations.

Cold weather and snow on Iceland meant that all aircraft needed to be de iced which took up some time. That is not the fault of the airline.

SEA
KEF
Good 7.0

The handling of the missed connection and rebooking on another flight.Great frequent updates from the ground crew RE the delay in departure.

Flight crew moderately friendly.

SEA
KEF
Excellent 10.0

The people, the small town, fully deck out for the Holidays Beautiful old buildings. Stayed at the Radison Blu! Fabulous, room came with over the top The Blue Lagoon natural spa! I will go again just for that.

Cold! But beautiful! I want to go in the summer next time. Expensive!

SEA
KEF
Mediocre 3.0

It was very cold in the cabin.

SEA
KEF
Okay 4.0

The airline charged me $95 to check a single bag after refusing to honor the fee I paid to a third party when I booked the flight. Avoid Icelandair and Justfly.

Sun, Mar 18
SEA
KEF
7h 20m
Mon, Mar 26
KEF
SEA
7h 45m
Trip: 9 days
7.5GoodShow reviews
Overall 7.5 Good
Based on 190 reviews
Overall
7.6
Boarding
7.3
Comfort
7.4
Crew
8.1
Entertainment
7.7
Food
6.3
SEA
KEF
Good 7.6

Stopover at Rejyavik and the Icelandic cultural experience on board

SEA
KEF
Mediocre 3.0

Have to pay for food. Uncomfortable seats.

SEA
KEF
Excellent 8.0

Seats weren't too cramped, flight was smooth

Entertainment: Not a huge selection of recent movies or any games

SEA
KEF
Excellent 9.6

Free Hot drink, Headrest entertainment

No peanuts...I dont really care

SEA
KEF
Mediocre 3.0

It was very cold in the cabin.

Tue, Feb 20
SEA
KEF
7h 20m
Tue, Feb 27
KEF
SEA
7h 50m
Trip: 8 days
7.5GoodShow reviews
Overall 7.5 Good
Based on 190 reviews
Overall
7.6
Boarding
7.3
Comfort
7.4
Crew
8.1
Entertainment
7.7
Food
6.3
SEA
KEF
Excellent 10.0

The people, the small town, fully deck out for the Holidays Beautiful old buildings. Stayed at the Radison Blu! Fabulous, room came with over the top The Blue Lagoon natural spa! I will go again just for that.

Cold! But beautiful! I want to go in the summer next time. Expensive!

SEA
KEF
Okay 4.0

The airline charged me $95 to check a single bag after refusing to honor the fee I paid to a third party when I booked the flight. Avoid Icelandair and Justfly.

SEA
KEF
Okay 5.6

The movie selection was good.

The seats are horrible. The only seats that are more uncomfortable are on Frontier, and these are Frontier seats with an extra “pad” on top. There was also no leg room whatsoever. I think my tray table was also slanted because I set my drink down on it and it slid right off into my lap.

SEA
KEF
Excellent 10.0

The aircraft, crew, and entertainment were excellent. We knew that food was available for sale so we prepared a picnic lunch. All of the usual soft drinks were complementary. Boarding was organized and timely at both locations.

Cold weather and snow on Iceland meant that all aircraft needed to be de iced which took up some time. That is not the fault of the airline.

SEA
KEF
Good 7.6

Stopover at Rejyavik and the Icelandic cultural experience on board

Show more results

Seattle/Tacoma Intl to Reykjavik Keflavik Intl Flight Information

Avg. Flight Duration 7h 31m
Flights Arrive in Reykjavik Keflavik Intl
Flights Depart from Seattle/Tacoma Intl
Flight Price $530
Distance 3611 miles
Airlines Icelandair, American Airlines, Delta
*
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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.