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Keflavik Intl

$686+ 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KEF
Jan 13 — Jan 201
Tue 1/13
Tue 1/20
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 December 14, 2025.

This Icelandair deal was found by Cheapflights users on 12/14. 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.
Wed 12/3110:44 amONT - KEF
1 stop11h 31mMultiple Airlines
Thu 1/84:55 pmKEF - ONT
1 stop12h 50mMultiple Airlines
Deal found 12/14$1,942
This Icelandair deal was found by Cheapflights users on 12/14. 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.
Mon 12/2910:44 amONT - KEF
1 stop11h 31mMultiple Airlines
Tue 1/64:55 pmKEF - ONT
1 stop12h 50mMultiple Airlines
Deal found 12/14$2,402
This British Airways deal was found by Cheapflights users on 12/12. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/232:42 pmONT - KEF
2 stops60h 13mBritish Airways
Sun 12/285:55 pmKEF - ONT
2 stops32h 21mBritish Airways
Deal found 12/12$2,588
This Trip.com deal was found by Cheapflights users on 12/14. 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.
Thu 12/256:00 amONT - KEF
1 stop16h 15mMultiple Airlines
Wed 12/315:00 pmKEF - ONT
1 stop15h 14mMultiple Airlines
Deal found 12/14$2,758
This Icelandair deal was found by Cheapflights users on 12/12. 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.
Sat 12/2710:25 amONT - KEF
1 stop11h 40mMultiple Airlines
Wed 12/315:00 pmKEF - ONT
1 stop15h 14mMultiple Airlines
Deal found 12/12$2,795
This British Airways deal was found by Cheapflights users on 12/14. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/292:42 pmONT - KEF
2 stops36h 08mBritish Airways
Sun 1/45:55 pmKEF - ONT
2 stops36h 19mBritish Airways
Deal found 12/14$2,830
This Icelandair deal was found by Cheapflights users on 12/12. 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.
Fri 12/264:05 pmONT - KEF
1 stop30h 00mMultiple Airlines
Thu 1/15:30 pmKEF - ONT
1 stop31h 00mMultiple Airlines
Deal found 12/12$3,047
This Booking.com deal was found by Cheapflights users on 12/12. 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.
Fri 12/2611:59 pmONT - KEF
2 stops33h 06mBritish Airways
Thu 1/111:45 amKEF - ONT
2 stops20h 01mBritish Airways
Deal found 12/12$3,360
This Ovago deal was found by Cheapflights users on 12/13. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/282:42 pmONT - KEF
2 stops36h 13mBritish Airways
Sat 1/311:55 amKEF - ONT
2 stops38h 21mBritish Airways
Deal found 12/13$3,543
This Icelandair deal was found by Cheapflights users on 12/14. 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.
Sat 12/2710:25 amONT - KEF
1 stop11h 40mMultiple Airlines
Fri 1/24:50 pmKEF - ONT
1 stop15h 09mMultiple Airlines
Deal found 12/14$3,567
This British Airways deal was found by Cheapflights users on 12/13. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2012:45 pmONT - KEF
2 stops20h 20mBritish Airways
Sun 12/2811:50 amKEF - ONT
2 stops19h 56mBritish Airways
Deal found 12/13$3,625

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 December 14, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$777
(Finnair)

One-way from

$686
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$1,062
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 ($94 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 14, 2025.
Use the filters below to find and compare flights from Ontario to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Ontario

Fly to

Keflavik Intl

Route

Depart

Return

Price

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Tue 3/10

7:00 am-6:15 am

1 stop16h 15m

Reykjavik Keflavik Intl

Tue 3/17

5:00 pm-10:44 pm

1 stop12h 44m

$882

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Wed 3/11

6:14 am-6:15 am

1 stop17h 01m

Reykjavik Keflavik Intl

Tue 3/17

5:00 pm-10:44 pm

1 stop12h 44m

$882

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Thu 1/29

6:00 am-6:15 am

1 stop16h 15m

Reykjavik Keflavik Intl

Thu 2/5

5:00 pm-11:56 pm

1 stop14h 56m

$882

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Fri 5/15

6:54 pm-8:30 am

2 stops30h 36m

Reykjavik Keflavik Intl

Sun 5/31

12:00 pm-10:26 pm

1 stop17h 26m

$921

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Tue 6/9

6:00 am-9:50 am

1 stop20h 50m

Reykjavik Keflavik Intl

Thu 6/18

12:45 pm-12:14 am

1 stop18h 29m

$922

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Sat 6/6

7:20 pm-9:50 am

1 stop31h 30m

Reykjavik Keflavik Intl

Thu 6/11

12:45 pm-12:14 am

1 stop18h 29m

$930

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Thu 6/4

4:45 pm-9:50 am

1 stop34h 05m

Reykjavik Keflavik Intl

Thu 6/11

12:45 pm-12:14 am

1 stop18h 29m

$930

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Wed 4/15

6:00 am-9:25 am

1 stop20h 25m

Reykjavik Keflavik Intl

Sun 4/19

4:50 pm-10:38 pm

1 stop12h 48m

$935

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Tue 6/9

6:00 am-7:55 am

2 stops18h 55m

Reykjavik Keflavik Intl

Thu 6/18

10:00 am-5:47 pm

2 stops38h 47m

$940

OntarioReykjavik

ONT - KEF

ONTKEF

Ontario

Thu 2/26

4:02 pm-6:15 am

1 stop30h 13m

Reykjavik Keflavik Intl

Tue 3/3

5:00 pm-10:44 pm

1 stop13h 44m

$946

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 20 results
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2

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Reykjavik Keflavik Intl Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 $519). 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 16h 15m. 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 $519). 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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