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Cheap flights from Reykjavik Keflavik Intl Airport to Washington from $333

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Reykjavik Keflavik Intl Airport to Washington departing on 8/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Reykjavik Keflavik Intl Airport to Washington

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
10:40 am - 11:45 am
KEF
-
SEA
8h 05mnonstop
Icelandair Logo
7:00 pm - 9:25 am
SEA
-
KEF
7h 25mnonstop
$596Icelandair
Thu, Aug 20 - Wed, Aug 26
Icelandair Logo
10:40 am - 11:45 am
KEF
-
SEA
8h 05mnonstop
Icelandair Logo
3:40 pm - 6:15 am
SEA
-
KEF
7h 35mnonstop
$598Icelandair
Mon, Aug 3 - Wed, Aug 12
Icelandair Logo
4:50 pm - 5:55 pm
KEF
-
PDX
8h 05mnonstop
Icelandair Logo
7:05 pm - 9:40 am
PDX
-
KEF
7h 35mnonstop
$632Icelandair
Fri, Aug 7 - Wed, Aug 12
Icelandair Logo
10:40 am - 11:45 am
KEF
-
SEA
8h 05mnonstop
Icelandair Logo
7:00 pm - 9:25 am
SEA
-
KEF
7h 25mnonstop
$633Icelandair
Wed, Sep 2 - Tue, Sep 8
Alaska Airlines Logo
12:45 pm - 1:40 pm
KEF
-
SEA
7h 55mnonstop
Alaska Airlines Logo
6:35 pm - 9:00 am
SEA
-
KEF
7h 25mnonstop
$646Alaska Airlines
Thu, Aug 20 - Thu, Aug 27
Icelandair Logo
4:50 pm - 5:55 pm
KEF
-
SEA
8h 05mnonstop
Icelandair Logo
7:00 pm - 9:25 am
SEA
-
KEF
7h 25mnonstop
$651Icelandair
Wed, Aug 12 - Mon, Aug 24
Icelandair Logo
10:40 am - 11:45 am
KEF
-
SEA
8h 05mnonstop
Icelandair Logo
7:00 pm - 9:25 am
SEA
-
KEF
7h 25mnonstop
$654Icelandair
Thu, Aug 20 - Wed, Aug 26
Multiple Airlines Logo
9:00 am - 7:11 pm
KEF
-
PDX
17h 11m
2 stops
Multiple Airlines Logo
7:45 pm - 7:40 am
PDX
-
KEF
28h 55m
3 stops
$661Multiple Airlines
Sat, Aug 29 - Sat, Sep 5
Alaska Airlines Logo
12:45 pm - 11:55 pm
KEF
-
PDX
18h 10m
1 stop
Alaska Airlines Logo
5:41 pm - 9:00 am
PDX
-
KEF
32h 19m
1 stop
$670Alaska Airlines
Fri, Aug 21 - Sun, Aug 30
Alaska Airlines Logo
12:45 pm - 1:40 pm
KEF
-
SEA
7h 55mnonstop
Alaska Airlines Logo
6:35 pm - 9:00 am
SEA
-
KEF
7h 25mnonstop
$672Alaska Airlines
Mon, Aug 3 - Wed, Aug 12

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Icelandair flights from Reykjavik Keflavik Intl Airport to State of Washington

Our best Icelandair deals on Reykjavik Keflavik Intl Airport to State of Washington flight tickets
Icelandair
Aug 20
KEF10:40 amReykjavik Keflavik Intl
8h 05m
SEA11:45 amSeattle/Tacoma Intl
Aug 26
SEA7:00 pmSeattle/Tacoma Intl
7h 25m
KEF9:25 amReykjavik Keflavik Intl
$596
Icelandair
Aug 3
KEF10:40 amReykjavik Keflavik Intl
8h 05m
SEA11:45 amSeattle/Tacoma Intl
Aug 12
SEA3:40 pmSeattle/Tacoma Intl
7h 35m
KEF6:15 amReykjavik Keflavik Intl
$598
Icelandair
Aug 7
KEF4:50 pmReykjavik Keflavik Intl
8h 05m
PDX5:55 pmPortland
Aug 12
PDX7:05 pmPortland
7h 35m
KEF9:40 amReykjavik Keflavik Intl
$632

Alaska Airlines flights from Reykjavik Keflavik Intl Airport to State of Washington

Our best Alaska Airlines deals on Reykjavik Keflavik Intl Airport to State of Washington flight tickets
Alaska Airlines
Aug 20
KEF12:45 pmReykjavik Keflavik Intl
7h 55m
SEA1:40 pmSeattle/Tacoma Intl
Aug 27
SEA6:35 pmSeattle/Tacoma Intl
7h 25m
KEF9:00 amReykjavik Keflavik Intl
$646
Alaska Airlines
Aug 21
KEF12:45 pmReykjavik Keflavik Intl
18h 10m
1 stop
PDX11:55 pmPortland
Aug 30
PDX5:41 pmPortland
32h 19m
1 stop
KEF9:00 amReykjavik Keflavik Intl
$670
Alaska Airlines
Aug 3
KEF12:45 pmReykjavik Keflavik Intl
7h 55m
SEA1:40 pmSeattle/Tacoma Intl
Aug 12
SEA6:35 pmSeattle/Tacoma Intl
7h 25m
KEF9:00 amReykjavik Keflavik Intl
$672

momondo Fare Finder

 
Customize your flight search to find flights from Reykjavik Keflavik Intl Airport to State of Washington 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, momondo users made 832,500 searches. Data last updated July 9, 2026.
Use the filters below to find and compare flights from Reykjavik Keflavik Intl Airport to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ReykjavikSeattle

KEF - SEA

KEFSEA

Reykjavik Keflavik Intl

Thu 8/20

10:40 am-11:45 am

Nonstop8h 05m

Seattle/Tacoma Intl

Wed 8/26

7:00 pm-9:25 am

Nonstop7h 25m

$596

ReykjavikSeattle

KEF - SEA

KEFSEA

Reykjavik Keflavik Intl

Mon 8/3

10:40 am-11:45 am

Nonstop8h 05m

Seattle/Tacoma Intl

Wed 8/12

3:40 pm-6:15 am

Nonstop7h 35m

$598

ReykjavikPortland

KEF - PDX

KEFPDX

Reykjavik Keflavik Intl

Fri 8/7

4:50 pm-5:55 pm

Nonstop8h 05m

Portland

Wed 8/12

7:05 pm-9:40 am

Nonstop7h 35m

$632

ReykjavikSeattle

KEF - SEA

KEFSEA

Reykjavik Keflavik Intl

Wed 9/2

10:40 am-11:45 am

Nonstop8h 05m

Seattle/Tacoma Intl

Tue 9/8

7:00 pm-9:25 am

Nonstop7h 25m

$633
Quickest round-trip

ReykjavikSeattle

KEF - SEA

KEFSEA

Reykjavik Keflavik Intl

Thu 8/20

12:45 pm-1:40 pm

Nonstop7h 55m

Seattle/Tacoma Intl

Thu 8/27

6:35 pm-9:00 am

Nonstop7h 25m

$646

ReykjavikSeattle

KEF - SEA

KEFSEA

Reykjavik Keflavik Intl

Wed 8/12

4:50 pm-5:55 pm

Nonstop8h 05m

Seattle/Tacoma Intl

Mon 8/24

7:00 pm-9:25 am

Nonstop7h 25m

$651

ReykjavikSeattle

KEF - SEA

KEFSEA

Reykjavik Keflavik Intl

Thu 8/20

10:40 am-11:45 am

Nonstop8h 05m

Seattle/Tacoma Intl

Wed 8/26

7:00 pm-9:25 am

Nonstop7h 25m

$654

ReykjavikPortland

KEF - PDX

KEFPDX

Reykjavik Keflavik Intl

Sat 8/29

9:00 am-7:11 pm

2 stops17h 11m

Portland

Sat 9/5

7:45 pm-7:40 am

3 stops28h 55m

$661

ReykjavikPortland

KEF - PDX

KEFPDX

Reykjavik Keflavik Intl

Fri 8/21

12:45 pm-11:55 pm

1 stop18h 10m

Portland

Sun 8/30

5:41 pm-9:00 am

1 stop32h 19m

$670

ReykjavikSeattle

KEF - SEA

KEFSEA

Reykjavik Keflavik Intl

Mon 8/3

12:45 pm-1:40 pm

Nonstop7h 55m

Seattle/Tacoma Intl

Wed 8/12

6:35 pm-9:00 am

Nonstop7h 25m

$672

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington from

How to get the cheapest flight ticket from Reykjavik Keflavik Intl Airport to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from Reykjavik Keflavik Intl Airport to State of Washington is on a Friday. Travelers who choose to depart for State of Washington on a Friday will often find tickets for as low as $723. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Reykjavik Keflavik Intl Airport to State of Washington for around $1,439.

What is the cheapest time of day to depart on your flight to State of Washington?

The cheapest time of day to fly to State of Washington is in the afternoon when flights can be purchased for as low as $831. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $933 on average. Flights to State of Washington from Reykjavik Keflavik Intl Airport in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Reykjavik Keflavik Intl to Washington flight route?

Fly from Reykjavik Keflavik Intl to Seattle/Tacoma Intl for the best Reykjavik Keflavik Intl - Washington flight prices

What cabin class options are available on Reykjavik Keflavik Intl Airport to State of Washington flights?

There are 2 cabin classes available to choose from on Reykjavik Keflavik Intl Airport to State of Washington flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Reykjavik Keflavik Intl Airport to State of Washington flights?

You could potentially save up to 26% on your flight if you consider stops on a Reykjavik Keflavik Intl Airport to State of Washington flight.

Cheap Reykjavik Keflavik Intl Airport to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Reykjavik Keflavik Intl Airport to State of Washington

Fastest flight time

7h 55m

Direct flights

Every day

Airports in State of Washington

96 airports
The fastest flight from Reykjavik Keflavik Intl Airport to State of Washington takes 7h 55m
Direct flights go from Reykjavik Keflavik Intl Airport to State of Washington every day.
There are 96 airports in State of Washington. From Reykjavik Keflavik Intl Airport there are direct flights to Portland (PDX), Seattle/Tacoma Intl (SEA).
Search flight deals

Frequently asked questions about flying from Reykjavik Keflavik Intl Airport to Washington

  • When did momondo last update prices for flights from Reykjavik Keflavik Intl Airport to Washington?

    Prices for flights from Reykjavik Keflavik Intl Airport to Washington were last updated today.

  • How old do you have to be to fly from Reykjavik Keflavik Intl Airport to Washington?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Reykjavik Keflavik Intl Airport to Washington.

  • What documentation or ID do you need to fly to Washington?

    The required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Reykjavik Keflavik Intl Airport to State of Washington?

Why use momondo?

Why should I use momondo to find a flight deal from Reykjavik to Washington?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Reykjavik to Washington for you.

Can I find flights from Reykjavik to Washington with flexible booking policies on momondo?

Yes. All flights to Washington from Reykjavik on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Reykjavik to Washington?

momondo helps you find the best flight between Reykjavik and Washington by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Reykjavik to Washington right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Reykjavik to Washington now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington and let you know when they change.

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