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Keflavik Intl

$496+ Cheap flights from Ontario (ONT) 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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KEF
Apr 10 — Apr 171
Fri 4/10
Fri 4/17
1 adult, Economy
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Cheap flight deals from Ontario to Keflavik Intl

Cheapest flights from Ontario to Keflavik Intl
Explore the most affordable flight options available from Ontario to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 11, 2026.

This Trip.com deal was found by Cheapflights users on 3/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2610:15 pm
ONT
-
KEF
2 stops28h 15m
Multiple Airlines
Tue 5/129:30 am
KEF
-
ONT
2 stops19h 18m
Multiple Airlines
Deal found 3/10$706
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/282:09 pm
ONT
-
KEF
1 stop11h 51m
Alaska Airlines
Tue 8/1112:45 pm
KEF
-
ONT
1 stop17h 26m
Alaska Airlines
Deal found 3/10$714
This Kiwi.com deal was found by Cheapflights users on 3/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2210:39 am
ONT
-
KEF
1 stop15h 46m
Multiple Airlines
Wed 4/294:50 pm
KEF
-
ONT
1 stop12h 42m
Multiple Airlines
Deal found 3/8$743
This Trip.com deal was found by Cheapflights users on 3/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
ONT
-
KEF
1 stop17h 00m
Multiple Airlines
Tue 5/124:50 pm
KEF
-
ONT
1 stop13h 59m
Multiple Airlines
Deal found 3/10$751
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/202:09 pm
ONT
-
KEF
1 stop11h 51m
Alaska Airlines
Wed 7/112:45 pm
KEF
-
ONT
1 stop17h 26m
Alaska Airlines
Deal found 3/10$765
This Alaska Airlines deal was found by Cheapflights users on 3/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:00 am
ONT
-
KEF
1 stop20h 00m
Alaska Airlines
Tue 9/112:45 pm
KEF
-
ONT
1 stop12h 28m
Alaska Airlines
Deal found 3/6$769
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:13 pm
ONT
-
KEF
1 stop28h 47m
Alaska Airlines
Tue 7/2112:45 pm
KEF
-
ONT
1 stop17h 26m
Alaska Airlines
Deal found 3/9$773
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/162:09 pm
ONT
-
KEF
1 stop11h 51m
Alaska Airlines
Wed 7/112:45 pm
KEF
-
ONT
1 stop17h 26m
Alaska Airlines
Deal found 3/9$800
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:00 am
ONT
-
KEF
1 stop17h 15m
Multiple Airlines
Mon 4/274:50 pm
KEF
-
ONT
1 stop14h 09m
Multiple Airlines
Deal found 3/6$802
This Expedia deal was found by Cheapflights users on 3/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/97:41 pm
ONT
-
KEF
1 stop30h 19m
Alaska Airlines
Sat 6/1312:45 pm
KEF
-
ONT
1 stop17h 26m
Alaska Airlines
Deal found 3/7$804
This Alaska Airlines deal was found by Cheapflights users on 3/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/139:13 pm
ONT
-
KEF
1 stop28h 47m
Alaska Airlines
Wed 6/2412:45 pm
KEF
-
ONT
1 stop29h 29m
Alaska Airlines
Deal found 3/6$808
This Icelandair deal was found by Cheapflights users on 3/8. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:00 am
ONT
-
KEF
1 stop20h 25m
Multiple Airlines
Tue 5/2610:45 am
KEF
-
ONT
1 stop18h 05m
Multiple Airlines
Deal found 3/8$812

Find flight deals from Ontario to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) 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 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$706
(Trip.com)

One-way from

$496
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$816
Provider with most accurate pricing for Ontario-Reykjavik Keflavik Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Reykjavik Keflavik Intl flights.
Search Deals
From Ontario to Reykjavik Keflavik Intl
Search Deals
One-way flight from Ontario to Reykjavik Keflavik Intl
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($99 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($14 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 Ontario 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 11, 2026.
Use the filters below to find and compare flights from Ontario to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Tue 6/2

6:00 am-9:00 am

1 stop20h 00m

Reykjavik Keflavik Intl

Sat 6/13

12:45 pm-11:11 pm

1 stop17h 26m

$825

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Fri 7/17

5:38 pm-9:00 am

1 stop32h 22m

Reykjavik Keflavik Intl

Tue 7/28

12:45 pm-11:14 am

1 stop29h 29m

$832
Quickest round-trip

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Tue 6/16

2:09 pm-9:00 am

1 stop11h 51m

Reykjavik Keflavik Intl

Tue 6/30

12:45 pm-11:11 pm

1 stop17h 26m

$851

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Tue 7/14

2:09 pm-9:00 am

1 stop11h 51m

Reykjavik Keflavik Intl

Wed 7/22

12:45 pm-11:11 pm

1 stop17h 26m

$851

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Thu 5/21

7:00 am-6:05 am

1 stop16h 05m

Reykjavik Keflavik Intl

Wed 5/27

10:45 am-9:50 pm

1 stop18h 05m

$945

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Wed 6/17

2:09 pm-9:00 am

1 stop11h 51m

Reykjavik Keflavik Intl

Wed 7/1

12:45 pm-11:11 pm

1 stop17h 26m

$955

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Tue 6/23

6:00 am-9:00 am

1 stop20h 00m

Reykjavik Keflavik Intl

Tue 6/30

12:45 pm-11:11 pm

1 stop17h 26m

$961

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Tue 6/16

2:09 pm-9:00 am

1 stop11h 51m

Reykjavik Keflavik Intl

Sun 6/28

12:45 pm-11:14 am

1 stop29h 29m

$970

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Thu 5/21

6:00 am-6:20 am

2 stops17h 20m

Reykjavik Keflavik Intl

Wed 5/27

9:30 am-6:36 pm

2 stops16h 06m

$993

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Thu 5/21

6:30 am-8:50 am

1 stop19h 20m

Reykjavik Keflavik Intl

Wed 5/27

12:00 pm-10:46 pm

1 stop17h 46m

$994

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/5

Showing 1-10 of 21 resultsSorted by cheapest first
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Compare providers for flights from Ontario to Keflavik Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Keflavik Intl in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-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 Ontario-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Reykjavik Keflavik Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-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 Ontario-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 Ontario to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Ontario 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 Ontario to Reykjavik Keflavik Intl Airport

What is the cheapest month to book a flight from Ontario to Reykjavik Keflavik Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Ontario to Reykjavik Keflavik Intl Airport (average of $369). Flying from Ontario to Reykjavik Keflavik Intl Airport in December is currently the most expensive (average of $885). 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 Ontario 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 Ontario to Reykjavik Keflavik Intl?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Reykjavik Keflavik Intl. 0 airlines have flights from Ontario to Reykjavik Keflavik Intl on a regular basis. Booking flights from Ontario to Reykjavik Keflavik Intl should not be difficult; the airport handles an average of 0 outbound flights to Reykjavik Keflavik Intl per day.

  • How long is the flight from Ontario to Reykjavik Keflavik Intl Airport?

    Departing from Ontario to Reykjavik Keflavik Intl Airport will take you 20h. There are 4271 mi between Ontario and Reykjavik Keflavik Intl Airport.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario 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 Ontario to Reykjavik Keflavik Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Reykjavik Keflavik Intl Airport (average of $369). Flying from Ontario to Reykjavik Keflavik Intl Airport in December is currently the most expensive (average of $885). 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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