$376+ Cheap flights from Ontario (ONT) to Keflavik Intl (KEF)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KEF
Nov 26 — Dec 31
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Keflavik Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Keflavik Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to Keflavik IntlExplore 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 October 27, 2026.
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 October 27, 2026.
This Mytrip deal was found by Cheapflights users on 10/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/72:53 pm -
2 stops31h 12m
Mon 12/144:55 pm -
1 stop15h 25m
Deal found 10/22![Multiple Airlines logo]()
$771
This United Airlines deal was found by Cheapflights users on 10/26. 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 12/27:00 am -
1 stop19h 00m
Thu 12/1712:00 pm -
1 stop18h 31m
Deal found 10/26![United Airlines logo]()
$773
This United Airlines deal was found by Cheapflights users on 10/23. 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 12/1111:20 am -
2 stops14h 40m
Thu 12/1712:00 pm -
2 stops18h 11m
Deal found 10/23![United Airlines logo]()
$828
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Mon 12/76:40 pm -
2 stops55h 20m
Mon 12/1412:00 pm -
2 stops29h 38m
Deal found 10/23![United Airlines logo]()
$839
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Thu 12/106:40 pm -
2 stops31h 20m
Thu 12/1712:00 pm -
2 stops17h 00m
Deal found 10/26![United Airlines logo]()
$841
This United Airlines deal was found by Cheapflights users on 10/26. 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 11/104:17 pm -
2 stops33h 43m
Thu 11/1912:00 pm -
1 stop14h 47m
Deal found 10/26![United Airlines logo]()
$851
This oojo deal was found by Cheapflights users on 10/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:00 am -
1 stop16h 15m
Sat 11/215:00 pm -
1 stop14h 31m
Deal found 10/22![Icelandair logo]()
$855
This United Airlines deal was found by Cheapflights users on 10/24. 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.
Sun 11/297:00 am -
1 stop19h 00m
Mon 12/1412:00 pm -
1 stop14h 44m
Deal found 10/24![United Airlines logo]()
$858
This KAYAK deal was found by Cheapflights users on 10/24. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:00 am -
1 stop19h 00m
Mon 12/1412:00 pm -
1 stop14h 44m
Deal found 10/24![Multiple Airlines logo]()
$873
This Trip.com deal was found by Cheapflights users on 10/24. 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 12/16:00 am -
1 stop16h 05m
Tue 12/154:55 pm -
1 stop13h 22m
Deal found 10/24![Multiple Airlines logo]()
$875
Best flights from Ontario to Keflavik IntlDiscover carefully curated flight deals from Ontario to Keflavik Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.
Discover carefully curated flight deals from Ontario to Keflavik Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.
This United Airlines deal was found by Cheapflights users on 10/24. 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 12/27:00 am -
1 stop19h 00m
Thu 12/1712:00 pm -
1 stop18h 31m
Deal found 10/24![United Airlines logo]()
$773
This Finnair deal was found by Cheapflights users on 10/26. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/42:22 pm -
2 stops42h 53m
Sun 1/2410:00 am -
2 stops45h 13m
Deal found 10/26![Multiple Airlines logo]()
$1,064
This Delta deal was found by Cheapflights users on 10/22. 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.
Fri 3/267:00 am -
2 stops43h 30m
Fri 4/211:25 am -
2 stops30h 42m
Deal found 10/22![Delta logo]()
$1,101
This British Airways deal was found by Cheapflights users on 10/24. 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.
Thu 1/77:00 am -
2 stops26h 05m
Mon 1/1810:00 am -
2 stops40h 51m
Deal found 10/24![British Airways logo]()
$1,158
This United Airlines deal was found by Cheapflights users on 10/25. 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 11/119:25 am -
2 stops16h 35m
Mon 11/1612:00 pm -
2 stops16h 51m
Deal found 10/25![United Airlines logo]()
$901
This British Airways deal was found by Cheapflights users on 10/24. 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.
Wed 1/62:21 pm -
2 stops42h 44m
Tue 1/1210:00 am -
2 stops45h 13m
Deal found 10/24![British Airways logo]()
$1,167
This Icelandair deal was found by Cheapflights users on 10/22. 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.
Thu 3/256:35 am -
2 stops19h 50m
Thu 4/14:50 pm -
1 stop29h 05m
Deal found 10/22![Multiple Airlines logo]()
$1,193
This British Airways deal was found by Cheapflights users on 10/24. 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.
Wed 1/62:21 pm -
2 stops42h 44m
Thu 1/1410:00 am -
2 stops45h 13m
Deal found 10/24![British Airways logo]()
$1,167
This United Airlines deal was found by Cheapflights users on 10/24. 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.
Sun 11/227:00 am -
1 stop19h 00m
Mon 11/3012:00 pm -
1 stop14h 47m
Deal found 10/24![United Airlines logo]()
$1,171
This British Airways deal was found by Cheapflights users on 10/24. 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.
Wed 1/62:21 pm -
2 stops42h 44m
Wed 1/1310:00 am -
2 stops45h 13m
Deal found 10/24![British Airways logo]()
$1,167
This British Airways deal was found by Cheapflights users on 10/22. 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.
Sun 11/222:09 pm -
2 stops36h 41m
Sun 11/2910:00 am -
2 stops45h 59m
Deal found 10/22![British Airways logo]()
$1,199
Last-minute flights from Ontario to Keflavik IntlDiscover last-minute flight deals from Ontario to Keflavik Intl. Data last updated October 27, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Keflavik Intl. Data last updated October 27, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/26. 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 11/104:17 pm -
2 stops33h 43m
Thu 11/1912:00 pm -
1 stop14h 47m
Deal found 10/26![United Airlines logo]()
$851
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 11/115:07 pm -
2 stops28h 58m
Wed 11/184:55 pm -
1 stop14h 56m
Deal found 10/25![Multiple Airlines logo]()
$877
This United Airlines deal was found by Cheapflights users on 10/25. 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 11/119:25 am -
2 stops16h 35m
Mon 11/1612:00 pm -
2 stops16h 51m
Deal found 10/25![United Airlines logo]()
$901
This KAYAK deal was found by Cheapflights users on 10/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/137:00 am -
1 stop19h 00m
Thu 11/1912:00 pm -
1 stop14h 47m
Deal found 10/26![Multiple Airlines logo]()
$946
This FlightHub deal was found by Cheapflights users on 10/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/146:00 am -
1 stop16h 15m
Sat 11/215:00 pm -
1 stop14h 31m
Deal found 10/22![Multiple Airlines logo]()
$890
This oojo deal was found by Cheapflights users on 10/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:00 am -
1 stop16h 15m
Sat 11/215:00 pm -
1 stop14h 31m
Deal found 10/22![Icelandair logo]()
$855
This Mytrip deal was found by Cheapflights users on 10/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1512:01 pm -
2 stops34h 04m
Sat 11/214:55 pm -
2 stops26h 44m
Deal found 10/22![Multiple Airlines logo]()
$922
This Mytrip deal was found by Cheapflights users on 10/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:01 pm -
2 stops32h 14m
Fri 12/45:00 pm -
2 stops26h 51m
Deal found 10/22![Multiple Airlines logo]()
$908
This United Airlines deal was found by Cheapflights users on 10/23. 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 11/279:25 am -
2 stops16h 35m
Thu 12/312:00 pm -
1 stop14h 44m
Deal found 10/23![United Airlines logo]()
$828
This United Airlines deal was found by Cheapflights users on 10/24. 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.
Sun 11/297:00 am -
1 stop19h 00m
Mon 12/1412:00 pm -
1 stop14h 44m
Deal found 10/24![United Airlines logo]()
$858
One-way flights from Ontario to Keflavik IntlSearch for one-way flight options from Ontario to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.
Search for one-way flight options from Ontario to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.
This Air France deal was found by Cheapflights users on 10/25. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/217:00 am -
2 stops16h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Air France logo]()
$376
This United Airlines deal was found by Cheapflights users on 10/24. 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.
Sun 11/225:00 am -
3 stops21h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![United Airlines logo]()
$538
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Sat 10/311:29 pm -
2 stops37h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![United Airlines logo]()
$560
This United Airlines deal was found by Cheapflights users on 10/24. 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.
Mon 11/236:37 pm -
2 stops55h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![United Airlines logo]()
$567
This United Airlines deal was found by Cheapflights users on 10/26. 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 11/67:00 am -
1 stop19h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![United Airlines logo]()
$588
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Thu 11/265:00 am -
2 stops45h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![United Airlines logo]()
$611
This Expedia deal was found by Cheapflights users on 10/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1011:59 pm -
2 stops33h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![British Airways logo]()
$651
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Sun 12/205:55 am -
2 stops20h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![United Airlines logo]()
$685
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Sat 12/194:00 pm -
2 stops34h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![United Airlines logo]()
$691
This Alaska Airlines deal was found by Cheapflights users on 10/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:25 am -
1 stop15h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Alaska Airlines logo]()
$700
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 October 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $698 (Trip.com) |
One-way from | $376 (Air France) |
Popular in | November |
Cheapest in | April |
Average price | $820 |
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 7,457,451 searches. Data last updated October 27, 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
Cheapest round-trip
OntarioReykjavik
ONT Ontario - KEF Reykjavik Keflavik Intl
ONTKEF
Ontario
Wed 12/16
6:00 am-10:00 am
2 stops20h 00m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$538
OntarioReykjavik
ONT Ontario - KEF Reykjavik Keflavik Intl
ONTKEF
Ontario
Sun 11/22
5:00 am-10:00 am
3 stops21h 00m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$538
OntarioReykjavik
ONT Ontario - KEF Reykjavik Keflavik Intl
ONTKEF
Ontario
Sat 10/31
1:29 pm-10:00 am
2 stops37h 31m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$560
OntarioReykjavik
ONT Ontario - KEF Reykjavik Keflavik Intl
ONTKEF
Ontario
Mon 11/23
6:37 pm-10:00 am
2 stops55h 23m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$567
Quickest round-trip
OntarioReykjavik
ONT Ontario - KEF Reykjavik Keflavik Intl
ONTKEF
Ontario
Fri 11/6
9:25 am-10:00 am
2 stops16h 35m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$588
OntarioReykjavik
ONT Ontario - KEF Reykjavik Keflavik Intl
ONTKEF
Ontario
Thu 11/26
5:00 am-10:00 am
2 stops45h 00m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$611
OntarioReykjavik
ONT Ontario - KEF Reykjavik Keflavik Intl
ONTKEF
Ontario
Sun 12/20
5:55 am-10:00 am
2 stops20h 05m
Reykjavik Keflavik Intl
Wed 12/31
12:00 am-4:00 pm
Nonstop0h 00m
$685
OntarioReykjavik
ONT Ontario - KEF Reykjavik Keflavik Intl
ONTKEF
Ontario
Wed 12/2
7:00 am-10:00 am
1 stop19h 00m
Reykjavik Keflavik Intl
Thu 12/17
12:00 pm-10:31 pm
1 stop18h 31m
$773
OntarioReykjavik
ONT Ontario - KEF Reykjavik Keflavik Intl
ONTKEF
Ontario
Wed 11/11
9:25 am-10:00 am
2 stops16h 35m
Reykjavik Keflavik Intl
Mon 11/16
12:00 pm-8:51 pm
2 stops16h 51m
$901
OntarioReykjavik
ONT Ontario - KEF Reykjavik Keflavik Intl
ONTKEF
Ontario
Mon 1/4
2:22 pm-5:15 pm
2 stops42h 53m
Reykjavik Keflavik Intl
Sun 1/24
10:00 am-11:13 pm
2 stops45h 13m
$1,064
Showing 1-10 of 18 resultsSorted by cheapest first
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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- 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.
ONT-KEF
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.
Reviews of airlines servicing Keflavik Intl
Get insights into the airlines that provide service to Keflavik Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Keflavik Intl. Reviews last updated October 27, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines from Ontario to Reykjavik Keflavik Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
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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.
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$645 | Average$808 | FlexibilityNo cancel fee | On-time75% |