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Keflavik Intl

$445+ Cheap flights from Portland, ME (PWM) to Keflavik Intl (KEF)

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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — KEF
Apr 1 — Apr 81
Wed 4/1
Wed 4/8
1 adult, Economy
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Cheap flight deals from Portland to Keflavik Intl

Cheapest flights from Portland to Keflavik Intl
Explore the most affordable flight options available from Portland to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 2, 2026.

This United Airlines deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1810:04 am
PWM
-
KEF
1 stop18h 46m
United Airlines
Fri 8/289:15 am
KEF
-
PWM
2 stops36h 29m
United Airlines
Deal found 2/28$625
This Delta deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:38 am
PWM
-
KEF
1 stop16h 02m
Delta
Fri 8/288:50 am
KEF
-
PWM
1 stop11h 25m
Delta
Deal found 2/28$645
This Air Canada deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1810:43 am
PWM
-
KEF
3 stops18h 02m
Multiple Airlines
Fri 8/289:15 am
KEF
-
PWM
2 stops16h 46m
Multiple Airlines
Deal found 2/28$657
This Air Canada deal was found by Cheapflights users on 2/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:00 am
PWM
-
KEF
2 stops21h 55m
Air Canada
Thu 8/2010:00 am
KEF
-
PWM
2 stops51h 22m
Air Canada
Deal found 2/27$692
This United Airlines deal was found by Cheapflights users on 2/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:22 pm
PWM
-
KEF
1 stop9h 28m
United Airlines
Tue 8/259:15 am
KEF
-
PWM
2 stops13h 12m
United Airlines
Deal found 2/26$748
This Air Canada deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1810:43 am
PWM
-
KEF
3 stops18h 02m
Air Canada
Fri 8/289:15 am
KEF
-
PWM
3 stops18h 16m
Air Canada
Deal found 2/28$762
This United Airlines deal was found by Cheapflights users on 2/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/129:15 am
PWM
-
KEF
1 stop19h 15m
United Airlines
Wed 8/1910:00 am
KEF
-
PWM
2 stops17h 31m
United Airlines
Deal found 2/27$793
This United Airlines deal was found by Cheapflights users on 2/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:20 pm
PWM
-
KEF
1 stop10h 10m
United Airlines
Wed 8/2611:00 am
KEF
-
PWM
1 stop11h 27m
United Airlines
Deal found 2/26$794
This Booking.com deal was found by Cheapflights users on 2/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:00 am
PWM
-
KEF
2 stops21h 55m
Air Canada
Wed 8/2610:00 am
KEF
-
PWM
2 stops27h 11m
Air Canada
Deal found 2/26$797
This United Airlines deal was found by Cheapflights users on 2/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/182:45 pm
PWM
-
KEF
1 stop14h 05m
United Airlines
Mon 8/249:15 am
KEF
-
PWM
2 stops13h 12m
United Airlines
Deal found 2/26$798

Find flight deals from Portland to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) 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 March 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$625
(United Airlines)

One-way from

$445
(Delta)

Popular in

December

Cheapest in

January

Average price

$438
Provider with most accurate pricing for Portland-Reykjavik Keflavik Intl flight deals.
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Provider most trusted by Cheapflights users for Portland-Reykjavik Keflavik Intl flights.
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From Portland to Reykjavik Keflavik Intl
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One-way flight from Portland to Reykjavik Keflavik Intl
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland 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 2,558,603 searches. Data last updated March 2, 2026.
Use the filters below to find and compare flights from Portland to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandReykjavik

PWM - KEF

PWMKEF

Portland

Thu 8/27

6:20 pm-8:30 am

1 stop10h 10m

Reykjavik Keflavik Intl

Wed 9/2

11:00 am-6:27 pm

1 stop11h 27m

$839

PortlandReykjavik

PWM - KEF

PWMKEF

Portland

Tue 8/25

4:50 pm-6:20 am

1 stop9h 30m

Reykjavik Keflavik Intl

Sun 8/30

8:50 am-4:15 pm

1 stop11h 25m

$840

PortlandReykjavik

PWM - KEF

PWMKEF

Portland

Thu 8/20

1:05 pm-9:10 am

1 stop16h 05m

Reykjavik Keflavik Intl

Mon 8/24

7:50 pm-1:29 pm

1 stop21h 39m

$850

PortlandReykjavik

PWM - KEF

PWMKEF

Portland

Wed 8/12

6:30 am-9:30 am

1 stop23h 00m

Reykjavik Keflavik Intl

Thu 8/20

11:25 am-11:59 pm

1 stop16h 34m

$861

PortlandReykjavik

PWM - KEF

PWMKEF

Portland

Thu 8/20

5:05 pm-8:30 am

1 stop11h 25m

Reykjavik Keflavik Intl

Mon 8/24

9:15 am-6:54 pm

2 stops13h 39m

$863

PortlandReykjavik

PWM - KEF

PWMKEF

Portland

Fri 8/28

4:48 pm-8:30 am

1 stop11h 42m

Reykjavik Keflavik Intl

Thu 9/3

11:00 am-6:27 pm

1 stop11h 27m

$885

PortlandReykjavik

PWM - KEF

PWMKEF

Portland

Fri 8/28

4:50 pm-6:20 am

1 stop9h 30m

Reykjavik Keflavik Intl

Tue 9/1

8:50 am-4:15 pm

1 stop11h 25m

$885

PortlandReykjavik

PWM - KEF

PWMKEF

Portland

Fri 8/14

2:35 pm-9:30 am

1 stop14h 55m

Reykjavik Keflavik Intl

Thu 8/20

11:25 am-11:59 pm

1 stop16h 34m

$1,056

PortlandReykjavik

PWM - KEF

PWMKEF

Portland

Fri 6/26

6:30 am-9:30 am

1 stop23h 00m

Reykjavik Keflavik Intl

Sat 7/4

8:50 am-1:54 pm

2 stops33h 04m

$1,175

PortlandReykjavik

PWM - KEF

PWMKEF

Portland

Tue 8/4

3:16 pm-8:45 am

2 stops13h 29m

Reykjavik Keflavik Intl

Mon 8/10

12:00 pm-9:51 pm

1 stop13h 51m

$1,214

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/27

Showing 1-10 of 13 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Portland, Maine-Reykjavik Keflavik Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Reykjavik Keflavik Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-Reykjavik Keflavik Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-Reykjavik Keflavik Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Portland 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.

Cheapflights Insights

Everything you need to know about your flight from Portland to Reykjavik Keflavik Intl Airport

What is the cheapest month to book a flight from Portland, Maine to Reykjavik Keflavik Intl Airport?

Currently, April is the cheapest month in which you can book a flight from Portland, Maine to Reykjavik Keflavik Intl Airport (average of $236). Flying from Portland, Maine to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $371). 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.

Related info for your journey

Find useful and relevant information for your journey from Portland 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 Portland to Reykjavik Keflavik Intl?

    Located just 2.9 mi from the city center, Portland is the airport most travelers will use when flying to Reykjavik Keflavik Intl from Portland. Booking flights from Portland (PWM) to Reykjavik Keflavik Intl should be relatively easy as there are 0 daily outbound flights to Reykjavik Keflavik Intl from 0 different airlines.

  • How long is the flight from Portland, Maine to Reykjavik Keflavik Intl Airport?

    For as low as $840, United Airlines can have you in Reykjavik Keflavik Intl Airport from Portland, Maine in 9h 30m. Airlines will cover a distance of 2313 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Portland to Keflavik Intl that include hotel bookings?

    Yes. In addition to deals on Portland to Keflavik Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Keflavik Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Keflavik Intl.

  • Can I find deals for business class flights from Portland to Keflavik Intl?

    Yes. Cheapflights offers flight deals from Portland 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 Portland, Maine to Reykjavik Keflavik Intl Airport?

    Currently, April is the cheapest month in which you can book a flight from Portland, Maine to Reykjavik Keflavik Intl Airport (average of $236). Flying from Portland, Maine to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $371). 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

Traveling to a place near Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Keflavik
Hveragerdi

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