$325+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — KEF
Jul 7 — Jul 141
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
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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
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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 June 7, 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 June 7, 2026.
This Icelandair deal was found by Cheapflights users on 6/6. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/218:10 am
ONT
- KEF
1 stop14h 50m
Multiple Airlines
Thu 8/2710:45 am
KEF
- ONT
1 stop18h 25m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$675
This Icelandair deal was found by Cheapflights users on 6/3. 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 8/3112:25 pm
ONT
- KEF
1 stop10h 35m
Multiple Airlines
Sat 9/510:45 am
KEF
- ONT
1 stop12h 40m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$752
This Alaska Airlines deal was found by Cheapflights users on 6/6. 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 8/2212:00 pm
ONT
- KEF
1 stop14h 00m
Alaska Airlines
Thu 8/2712:45 pm
KEF
- ONT
1 stop17h 39m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$764
This Icelandair deal was found by Cheapflights users on 6/6. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1312:25 pm
ONT
- KEF
1 stop10h 35m
Multiple Airlines
Wed 9/24:50 pm
KEF
- ONT
1 stop12h 10m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$776
This Icelandair deal was found by Cheapflights users on 6/3. 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 7/2210:54 am
ONT
- KEF
1 stop15h 46m
Multiple Airlines
Thu 8/274:50 pm
KEF
- ONT
1 stop12h 20m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$802
This Icelandair deal was found by Cheapflights users on 6/4. 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 9/2210:55 am
ONT
- KEF
1 stop12h 05m
Multiple Airlines
Thu 10/14:50 pm
KEF
- ONT
1 stop12h 45m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$806
This Alaska Airlines deal was found by Cheapflights users on 6/2. 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 6/306:02 am
ONT
- KEF
1 stop19h 58m
Alaska Airlines
Fri 7/1012:45 pm
KEF
- ONT
1 stop14h 47m
Alaska Airlines
Deal found 6/2![Alaska Airlines logo]()
$808
This Kiwi.com deal was found by Cheapflights users on 6/6. 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.
Fri 8/217:59 pm
ONT
- KEF
1 stop30h 01m
Multiple Airlines
Fri 8/289:00 am
KEF
- ONT
2 stops32h 58m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$821
This Alaska Airlines deal was found by Cheapflights users on 6/6. 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 8/2212:00 pm
ONT
- KEF
1 stop14h 00m
Alaska Airlines
Fri 8/2812:45 pm
KEF
- ONT
1 stop13h 18m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$822
This Alaska Airlines deal was found by Cheapflights users on 6/6. 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.
Fri 8/217:59 pm
ONT
- KEF
1 stop30h 01m
Alaska Airlines
Sat 8/2912:45 pm
KEF
- ONT
1 stop13h 18m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$827
This Delta deal was found by Cheapflights users on 6/4. 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 8/49:43 am
ONT
- KEF
2 stops14h 17m
Delta
Wed 8/199:30 am
KEF
- ONT
2 stops13h 54m
Delta
Deal found 6/4![Delta logo]()
$829
This Alaska Airlines deal was found by Cheapflights users on 6/6. 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.
Fri 8/217:59 pm
ONT
- KEF
1 stop30h 01m
Alaska Airlines
Fri 8/2812:45 pm
KEF
- ONT
1 stop17h 39m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$830
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 June 7, 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 June 7, 2026.
This Icelandair deal was found by Cheapflights users on 6/6. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/212:00 pm
ONT
- KEF
1 stop12h 25m
Multiple Airlines
Fri 8/284:50 pm
KEF
- ONT
1 stop12h 20m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$675
This Alaska Airlines deal was found by Cheapflights users on 6/6. 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 8/2212:00 pm
ONT
- KEF
1 stop14h 00m
Alaska Airlines
Fri 8/2812:45 pm
KEF
- ONT
1 stop13h 18m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$822
This United Airlines deal was found by Cheapflights users on 6/3. 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 10/59:39 am
ONT
- KEF
2 stops16h 06m
United Airlines
Wed 10/149:15 am
KEF
- ONT
2 stops34h 26m
United Airlines
Deal found 6/3![United Airlines logo]()
$969
This Alaska Airlines deal was found by Cheapflights users on 6/3. 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 6/222:05 pm
ONT
- KEF
1 stop11h 55m
Alaska Airlines
Wed 7/112:45 pm
KEF
- ONT
1 stop17h 26m
Alaska Airlines
Deal found 6/3![Alaska Airlines logo]()
$961
This United Airlines deal was found by Cheapflights users on 6/3. 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 8/197:00 am
ONT
- KEF
1 stop18h 50m
United Airlines
Mon 8/319:15 am
KEF
- ONT
2 stops34h 35m
United Airlines
Deal found 6/3![United Airlines logo]()
$1,024
This Alaska Airlines deal was found by Cheapflights users on 6/6. 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.
Thu 7/169:20 pm
ONT
- KEF
1 stop28h 40m
Alaska Airlines
Sat 7/2512:45 pm
KEF
- ONT
1 stop14h 47m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$1,023
This United Airlines deal was found by Cheapflights users on 6/3. 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 10/167:00 am
ONT
- KEF
1 stop18h 50m
United Airlines
Tue 10/2010:00 am
KEF
- ONT
2 stops42h 58m
United Airlines
Deal found 6/3![United Airlines logo]()
$1,025
This Alaska Airlines deal was found by Cheapflights users on 6/4. 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 7/22:05 pm
ONT
- KEF
1 stop11h 55m
Alaska Airlines
Thu 7/912:45 pm
KEF
- ONT
1 stop14h 51m
Alaska Airlines
Deal found 6/4![Alaska Airlines logo]()
$1,025
This Alaska Airlines deal was found by Cheapflights users on 6/5. 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 6/306:02 am
ONT
- KEF
1 stop19h 58m
Alaska Airlines
Mon 7/1312:45 pm
KEF
- ONT
1 stop14h 47m
Alaska Airlines
Deal found 6/5![Alaska Airlines logo]()
$1,041
This Alaska Airlines deal was found by Cheapflights users on 6/2. 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.
Sun 6/286:02 am
ONT
- KEF
1 stop19h 58m
Alaska Airlines
Wed 7/812:45 pm
KEF
- ONT
1 stop17h 26m
Alaska Airlines
Deal found 6/2![Alaska Airlines logo]()
$1,041
This Alaska Airlines deal was found by Cheapflights users on 6/5. 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 7/29:20 pm
ONT
- KEF
1 stop28h 40m
Alaska Airlines
Mon 7/1312:45 pm
KEF
- ONT
1 stop14h 47m
Alaska Airlines
Deal found 6/5![Alaska Airlines logo]()
$1,049
Last-minute flights from Ontario to Keflavik IntlDiscover last-minute flight deals from Ontario to Keflavik Intl. Data last updated June 7, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Keflavik Intl. Data last updated June 7, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 6/6. 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.
Sun 6/212:05 pm
ONT
- KEF
1 stop11h 55m
Alaska Airlines
Mon 6/2912:45 pm
KEF
- ONT
1 stop14h 47m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$886
This Alaska Airlines deal was found by Cheapflights users on 6/2. 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 6/306:02 am
ONT
- KEF
1 stop19h 58m
Alaska Airlines
Fri 7/1012:45 pm
KEF
- ONT
1 stop14h 47m
Alaska Airlines
Deal found 6/2![Alaska Airlines logo]()
$808
This Alaska Airlines deal was found by Cheapflights users on 6/2. 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.
Wed 7/15:54 pm
ONT
- KEF
1 stop32h 06m
Alaska Airlines
Fri 7/1012:45 pm
KEF
- ONT
1 stop14h 47m
Alaska Airlines
Deal found 6/2![Alaska Airlines logo]()
$856
This Priceline deal was found by Cheapflights users on 6/6. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/512:08 pm
ONT
- KEF
1 stop13h 52m
Alaska Airlines
Sat 7/1112:45 pm
KEF
- ONT
1 stop14h 47m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$880
This Priceline deal was found by Cheapflights users on 6/6. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/712:04 pm
ONT
- KEF
1 stop13h 56m
Alaska Airlines
Thu 7/912:45 pm
KEF
- ONT
1 stop14h 51m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$874
This Booking.com deal was found by Cheapflights users on 6/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1212:08 pm
ONT
- KEF
1 stop13h 52m
Alaska Airlines
Mon 7/2712:45 pm
KEF
- ONT
1 stop29h 29m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$870
This oojo deal was found by Cheapflights users on 6/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/155:54 pm
ONT
- KEF
1 stop13h 06m
Icelandair
Wed 7/2210:40 am
KEF
- ONT
1 stop19h 31m
Icelandair
Deal found 6/6![Icelandair logo]()
$869
This oojo deal was found by Cheapflights users on 6/4. 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.
Wed 7/155:54 pm
ONT
- KEF
1 stop13h 06m
Icelandair
Thu 7/2310:40 am
KEF
- ONT
1 stop20h 12m
Icelandair
Deal found 6/4![Icelandair logo]()
$871
This oojo deal was found by Cheapflights users on 6/3. 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.
Tue 7/215:26 pm
ONT
- KEF
1 stop13h 34m
Icelandair
Wed 7/2910:40 am
KEF
- ONT
1 stop19h 31m
Icelandair
Deal found 6/3![Icelandair logo]()
$887
This Icelandair deal was found by Cheapflights users on 6/3. 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 7/2210:54 am
ONT
- KEF
1 stop15h 46m
Multiple Airlines
Thu 8/274:50 pm
KEF
- ONT
1 stop12h 20m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$802
This oojo deal was found by Cheapflights users on 6/2. 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 7/267:00 am
ONT
- KEF
1 stop19h 40m
Icelandair
Wed 8/57:45 pm
KEF
- ONT
1 stop24h 24m
Icelandair
Deal found 6/2![Icelandair logo]()
$868
This oojo deal was found by Cheapflights users on 6/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/282:05 pm
ONT
- KEF
1 stop16h 55m
Icelandair
Fri 8/77:45 pm
KEF
- ONT
1 stop22h 29m
Icelandair
Deal found 6/6![Icelandair logo]()
$881
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 June 7, 2026.
Search for one-way flight options from Ontario to Keflavik Intl. Find affordable one-way fares based on user searches. Data last updated June 7, 2026.
This Alaska Airlines deal was found by Cheapflights users on 6/5. 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 9/16:02 am
ONT
- KEF
1 stop19h 58m
Alaska Airlines
Deal found 6/5![Alaska Airlines logo]()
$325
This Alaska Airlines deal was found by Cheapflights users on 6/6. 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.
Wed 8/1912:00 pm
ONT
- KEF
1 stop14h 00m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$383
This Alaska Airlines deal was found by Cheapflights users on 6/6. 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.
Fri 8/286:02 am
ONT
- KEF
1 stop19h 58m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$385
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Fri 7/33:34 pm
ONT
- KEF
2 stops34h 26m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$395
This Alaska Airlines deal was found by Cheapflights users on 6/6. 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.
Tue 7/76:02 am
ONT
- KEF
1 stop19h 58m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$410
This Alaska Airlines deal was found by Cheapflights users on 6/6. 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 7/189:20 pm
ONT
- KEF
1 stop28h 40m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 6/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/197:00 am
ONT
- KEF
1 stop18h 50m
United Airlines
Deal found 6/6![United Airlines logo]()
$465
This United Airlines deal was found by Cheapflights users on 6/5. 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 8/176:00 am
ONT
- KEF
2 stops18h 55m
United Airlines
Deal found 6/5![United Airlines logo]()
$468
This United Airlines deal was found by Cheapflights users on 6/4. 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 8/151:56 pm
ONT
- KEF
2 stops35h 49m
United Airlines
Deal found 6/4![United Airlines logo]()
$473
This Mytrip deal was found by Cheapflights users on 6/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:20 am
ONT
- KEF
2 stops18h 20m
WestJet
Deal found 6/6![WestJet logo]()
$475
This Mytrip deal was found by Cheapflights users on 6/5. 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 8/1711:45 am
ONT
- KEF
3 stops36h 55m
WestJet
Deal found 6/5![WestJet logo]()
$477
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 June 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $675 (Icelandair) |
One-way from | $325 (Alaska Airlines) |
Popular in | November |
Cheapest in | April |
Average price | $959 |
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 June 7, 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
Quickest round-trip
OntarioReykjavik
ONT - KEF
ONTKEF
Ontario
Fri 8/21
2:00 pm-9:25 am
1 stop12h 25m
Reykjavik Keflavik Intl
Fri 8/28
4:50 pm-10:10 pm
1 stop12h 20m
$675
OntarioReykjavik
ONT - KEF
ONTKEF
Ontario
Sat 8/22
12:00 pm-9:00 am
1 stop14h 00m
Reykjavik Keflavik Intl
Fri 8/28
12:45 pm-7:03 pm
1 stop13h 18m
$822
OntarioReykjavik
ONT - KEF
ONTKEF
Ontario
Mon 6/22
2:05 pm-9:00 am
1 stop11h 55m
Reykjavik Keflavik Intl
Wed 7/1
12:45 pm-11:11 pm
1 stop17h 26m
$961
OntarioReykjavik
ONT - KEF
ONTKEF
Ontario
Mon 10/5
9:39 am-8:45 am
2 stops16h 06m
Reykjavik Keflavik Intl
Wed 10/14
9:15 am-12:41 pm
2 stops34h 26m
$969
OntarioReykjavik
ONT - KEF
ONTKEF
Ontario
Thu 7/16
9:20 pm-9:00 am
1 stop28h 40m
Reykjavik Keflavik Intl
Sat 7/25
12:45 pm-8:32 pm
1 stop14h 47m
$1,023
OntarioReykjavik
ONT - KEF
ONTKEF
Ontario
Wed 8/19
7:00 am-8:50 am
1 stop18h 50m
Reykjavik Keflavik Intl
Mon 8/31
9:15 am-12:50 pm
2 stops34h 35m
$1,024
OntarioReykjavik
ONT - KEF
ONTKEF
Ontario
Fri 10/16
7:00 am-8:50 am
1 stop18h 50m
Reykjavik Keflavik Intl
Tue 10/20
10:00 am-9:58 pm
2 stops42h 58m
$1,025
OntarioReykjavik
ONT - KEF
ONTKEF
Ontario
Thu 7/2
2:05 pm-9:00 am
1 stop11h 55m
Reykjavik Keflavik Intl
Thu 7/9
12:45 pm-8:36 pm
1 stop14h 51m
$1,025
OntarioReykjavik
ONT - KEF
ONTKEF
Ontario
Tue 6/30
6:02 am-9:00 am
1 stop19h 58m
Reykjavik Keflavik Intl
Mon 7/13
12:45 pm-8:32 pm
1 stop14h 47m
$1,041
OntarioReykjavik
ONT - KEF
ONTKEF
Ontario
Sun 6/28
6:02 am-9:00 am
1 stop19h 58m
Reykjavik Keflavik Intl
Wed 7/8
12:45 pm-11:11 pm
1 stop17h 26m
$1,041
Showing 1-10 of 22 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 June.
| 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 |
- 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 June 7, 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
7.1
Overall
7.9
Comfort
7.8
Crew
8.5
Boarding
8.1
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.1
Overall
7.9
Comfort
7.8
Crew
8.5
Boarding
8.1
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
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.
Traveling to a place near Reykjavik Keflavik Intl Airport?
Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locationsKeflavik
Hveragerdi
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Other flights to Keflavik Intl
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Ontario and Keflavik Intl flights
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Top airline flying from Ontario to Keflavik Intl
Discover the top airline that operate flights from Ontario to Keflavik Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$714 | Average$931 | FlexibilityNo cancel fee | On-time75% |