$98+ Cheap flights from Boston (BOS) to Ontario
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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YYZ
May 28 — Jun 41
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Ontario with Cheapflights
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Cheapest flights from Boston to OntarioExplore the most affordable flight options available from Boston to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 28, 2026.
Explore the most affordable flight options available from Boston to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/257:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Thu 5/283:05 pm
YTZ
- BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$218
This Trip.com deal was found by Cheapflights users on 4/24. 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.
Sat 5/97:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Sun 5/103:05 pm
YTZ
- BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/24![Porter Airlines logo]()
$219
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Mon 8/178:50 am
YTZ
- BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/26![Porter Airlines logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Sun 5/316:05 pm
YTZ
- BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/23![Porter Airlines logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Fri 5/226:05 pm
YTZ
- BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$223
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/157:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Tue 8/256:00 pm
YTZ
- BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/23![Porter Airlines logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/147:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Wed 5/2711:55 am
YTZ
- BOS
1 stop4h 00m
Porter Airlines
Deal found 4/26![Porter Airlines logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/208:30 pm
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Sat 5/2311:55 am
YTZ
- BOS
1 stop4h 00m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$226
This Gotogate deal was found by Cheapflights users on 4/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:10 am
BOS
- YYZ
Nonstop1h 53m
Air Canada
Sun 5/108:55 pm
YYZ
- BOS
Nonstop1h 44m
Air Canada
Deal found 4/25![Air Canada logo]()
$227
This Mytrip deal was found by Cheapflights users on 4/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/910:35 am
BOS
- YTZ
1 stop5h 17m
Multiple Airlines
Sun 5/101:00 pm
YTZ
- BOS
Nonstop1h 41m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$227
This Vliegwinkel deal was found by Cheapflights users on 4/26. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/143:25 pm
BOS
- YYZ
1 stop4h 19m
Porter Airlines
Sun 5/177:25 am
YYZ
- BOS
Nonstop1h 40m
Porter Airlines
Deal found 4/26![Porter Airlines logo]()
$228
This Flightnetwork deal was found by Cheapflights users on 4/28. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/163:40 pm
BOS
- YTZ
1 stop5h 52m
Multiple Airlines
Sun 5/171:00 pm
YTZ
- BOS
Nonstop1h 41m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$228
Best flights from Boston to OntarioDiscover carefully curated flight deals from Boston to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 28, 2026.
Discover carefully curated flight deals from Boston to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 28, 2026.
This Porter Airlines deal was found by Cheapflights users on 4/27. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/167:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Tue 5/193:05 pm
YTZ
- BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/163:25 pm
BOS
- YOW
Nonstop1h 25m
Multiple Airlines
Mon 5/184:20 pm
YOW
- BOS
1 stop16h 52m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$270
This United Airlines deal was found by Cheapflights users on 4/24. 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 5/117:27 pm
BOS
- YUL
1 stop4h 46m
United Airlines
Wed 5/136:10 am
YUL
- BOS
1 stop6h 36m
United Airlines
Deal found 4/24![United Airlines logo]()
$302
This Delta deal was found by Cheapflights users on 4/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/218:00 am
BOS
- YYZ
1 stop8h 12m
Delta
Sun 5/242:30 pm
YYZ
- BOS
1 stop7h 55m
Delta
Deal found 4/27![Delta logo]()
$318
This KAYAK deal was found by Cheapflights users on 4/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/147:10 am
BOS
- YTZ
Nonstop1h 47m
Air Transat
Tue 6/168:50 am
YTZ
- BOS
Nonstop1h 41m
Air Transat
Deal found 4/27![Air Transat logo]()
$387
This Air Canada deal was found by Cheapflights users on 4/27. 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.
Thu 6/1110:45 am
BOS
- YQT
1 stop6h 35m
Air Canada
Sun 6/145:10 am
YQT
- BOS
1 stop6h 36m
Air Canada
Deal found 4/27![Air Canada logo]()
$438
This Porter Airlines deal was found by Cheapflights users on 4/23. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:30 pm
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Tue 6/91:50 pm
YTZ
- BOS
1 stop5h 15m
Porter Airlines
Deal found 4/23![Porter Airlines logo]()
$272
This United Airlines deal was found by Cheapflights users on 4/25. 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 5/135:45 am
BOS
- YUL
1 stop8h 55m
United Airlines
Wed 5/203:25 pm
YUL
- BOS
1 stop4h 29m
United Airlines
Deal found 4/25![United Airlines logo]()
$302
This Porter Airlines deal was found by Cheapflights users on 4/25. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:35 pm
BOS
- YYZ
Nonstop1h 55m
Porter Airlines
Tue 6/27:25 am
YYZ
- BOS
Nonstop1h 40m
Porter Airlines
Deal found 4/25![Porter Airlines logo]()
$276
This Delta deal was found by Cheapflights users on 4/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/222:00 pm
BOS
- YYZ
1 stop7h 19m
Delta
Sun 5/2410:00 am
YYZ
- BOS
1 stop8h 28m
Delta
Deal found 4/24![Delta logo]()
$319
This Porter Airlines deal was found by Cheapflights users on 4/26. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/193:25 pm
BOS
- YTZ
1 stop3h 33m
Porter Airlines
Sun 5/246:05 pm
YTZ
- BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/26![Porter Airlines logo]()
$279
This United Airlines deal was found by Cheapflights users on 4/27. 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.
Thu 8/2011:00 am
BOS
- YUL
1 stop5h 10m
United Airlines
Sun 8/236:00 am
YUL
- BOS
1 stop5h 17m
United Airlines
Deal found 4/27![United Airlines logo]()
$315
This Delta deal was found by Cheapflights users on 4/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:00 am
BOS
- YUL
2 stops13h 10m
Delta
Thu 8/272:30 pm
YUL
- BOS
1 stop8h 53m
Delta
Deal found 4/27![Delta logo]()
$322
This Porter Airlines deal was found by Cheapflights users on 4/26. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/173:25 pm
BOS
- YYZ
1 stop4h 19m
Porter Airlines
Mon 5/187:25 am
YYZ
- BOS
Nonstop1h 40m
Porter Airlines
Deal found 4/26![Porter Airlines logo]()
$281
This Delta deal was found by Cheapflights users on 4/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2812:00 pm
BOS
- YUL
2 stops11h 13m
Delta
Tue 6/29:30 am
YUL
- BOS
1 stop3h 50m
Delta
Deal found 4/26![Delta logo]()
$322
This Porter Airlines deal was found by Cheapflights users on 4/25. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/23:25 pm
BOS
- YYZ
1 stop4h 59m
Porter Airlines
Sun 6/147:25 am
YYZ
- BOS
Nonstop1h 40m
Porter Airlines
Deal found 4/25![Porter Airlines logo]()
$281
This Delta deal was found by Cheapflights users on 4/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:00 am
BOS
- YUL
2 stops12h 10m
Delta
Fri 8/282:30 pm
YUL
- BOS
1 stop7h 57m
Delta
Deal found 4/27![Delta logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/235:30 pm
BOS
- YQT
1 stop15h 25m
Multiple Airlines
Wed 5/278:15 am
YQT
- BOS
2 stops7h 40m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 4/24. 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.
Thu 6/258:00 am
BOS
- YOW
1 stop8h 38m
United Airlines
Mon 6/295:20 pm
YOW
- BOS
1 stop7h 48m
United Airlines
Deal found 4/24![United Airlines logo]()
$377
This Porter Airlines deal was found by Cheapflights users on 4/24. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:35 pm
BOS
- YYZ
Nonstop1h 55m
Porter Airlines
Sat 6/63:40 pm
YYZ
- BOS
1 stop5h 15m
Porter Airlines
Deal found 4/24![Porter Airlines logo]()
$285
This Delta deal was found by Cheapflights users on 4/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/58:00 am
BOS
- YYZ
1 stop8h 15m
Delta
Wed 7/82:31 pm
YYZ
- BOS
1 stop9h 00m
Delta
Deal found 4/27![Delta logo]()
$329
This Porter Airlines deal was found by Cheapflights users on 4/27. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/203:25 pm
BOS
- YYZ
1 stop4h 19m
Porter Airlines
Wed 5/273:40 pm
YYZ
- BOS
1 stop5h 15m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$290
This Air Canada deal was found by Cheapflights users on 4/23. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/155:10 am
BOS
- YQT
1 stop5h 45m
Air Canada
Fri 6/195:10 am
YQT
- BOS
1 stop6h 42m
Air Canada
Deal found 4/23![Air Canada logo]()
$524
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/157:00 pm
BOS
- YYZ
1 stop4h 41m
Delta
Fri 5/226:37 pm
YYZ
- BOS
1 stop5h 00m
Delta
Deal found 4/23![Delta logo]()
$351
This Porter Airlines deal was found by Cheapflights users on 4/26. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:35 pm
BOS
- YYZ
Nonstop1h 55m
Porter Airlines
Tue 9/83:55 pm
YYZ
- BOS
Nonstop1h 40m
Porter Airlines
Deal found 4/26![Porter Airlines logo]()
$293
This Air Canada deal was found by Cheapflights users on 4/28. 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.
Fri 6/125:10 am
BOS
- YQG
1 stop4h 14m
Air Canada
Fri 6/1910:05 am
YQG
- BOS
1 stop12h 33m
Air Canada
Deal found 4/28![Air Canada logo]()
$546
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/193:00 pm
BOS
- YYZ
1 stop8h 41m
Delta
Fri 5/226:37 pm
YYZ
- BOS
1 stop5h 00m
Delta
Deal found 4/23![Delta logo]()
$351
This Porter Airlines deal was found by Cheapflights users on 4/27. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/194:45 pm
BOS
- YYZ
2 stops12h 49m
Porter Airlines
Fri 5/223:55 pm
YYZ
- BOS
Nonstop1h 40m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$298
This Air Canada deal was found by Cheapflights users on 4/26. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2712:30 pm
BOS
- YQG
1 stop6h 39m
Air Canada
Fri 5/297:45 pm
YQG
- BOS
1 stop14h 04m
Air Canada
Deal found 4/26![Air Canada logo]()
$546
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/56:30 pm
BOS
- YXU
1 stop10h 50m
Multiple Airlines
Sun 6/72:40 pm
YXU
- BOS
2 stops18h 25m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$604
Last-minute flights from Boston to OntarioDiscover last-minute flight deals from Boston to Ontario. Data last updated April 28, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Ontario. Data last updated April 28, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 4/24. 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.
Sat 5/97:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Sun 5/103:05 pm
YTZ
- BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/24![Porter Airlines logo]()
$219
This Gotogate deal was found by Cheapflights users on 4/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:10 am
BOS
- YYZ
Nonstop1h 53m
Air Canada
Sun 5/108:55 pm
YYZ
- BOS
Nonstop1h 44m
Air Canada
Deal found 4/25![Air Canada logo]()
$227
This Mytrip deal was found by Cheapflights users on 4/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/910:35 am
BOS
- YTZ
1 stop5h 17m
Multiple Airlines
Sun 5/101:00 pm
YTZ
- BOS
Nonstop1h 41m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1211:25 am
BOS
- YUL
1 stop6h 50m
Porter Airlines
Wed 5/207:20 pm
YUL
- BOS
Nonstop1h 35m
Porter Airlines
Deal found 4/28![Porter Airlines logo]()
$233
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/147:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Wed 5/2711:55 am
YTZ
- BOS
1 stop4h 00m
Porter Airlines
Deal found 4/26![Porter Airlines logo]()
$225
This Vliegwinkel deal was found by Cheapflights users on 4/26. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/143:25 pm
BOS
- YYZ
1 stop4h 19m
Porter Airlines
Sun 5/177:25 am
YYZ
- BOS
Nonstop1h 40m
Porter Airlines
Deal found 4/26![Porter Airlines logo]()
$228
This Flightnetwork deal was found by Cheapflights users on 4/28. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/163:40 pm
BOS
- YTZ
1 stop5h 52m
Multiple Airlines
Sun 5/171:00 pm
YTZ
- BOS
Nonstop1h 41m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Fri 5/226:05 pm
YTZ
- BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$223
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/208:30 pm
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Tue 5/2611:55 am
YTZ
- BOS
1 stop4h 00m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Sat 5/309:00 am
YTZ
- BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/23![Porter Airlines logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Sun 6/78:50 am
YTZ
- BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/23![Porter Airlines logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/257:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Thu 5/283:05 pm
YTZ
- BOS
Nonstop1h 41m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$218
One-way flights from Boston to OntarioSearch for one-way flight options from Boston to Ontario. Find affordable one-way fares based on user searches. Data last updated April 28, 2026.
Search for one-way flight options from Boston to Ontario. Find affordable one-way fares based on user searches. Data last updated April 28, 2026.
This Super.com deal was found by Cheapflights users on 4/24. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/273:25 pm
BOS
- YYZ
1 stop4h 19m
Porter Airlines
Deal found 4/24![Porter Airlines logo]()
$98
This Trip.com deal was found by Cheapflights users on 4/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Deal found 4/23![Porter Airlines logo]()
$98
This Cheapflightsfares deal was found by Cheapflights users on 4/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1110:05 am
BOS
- YYZ
Nonstop1h 55m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$99
This Mytrip deal was found by Cheapflights users on 4/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/55:50 am
BOS
- YYZ
1 stop4h 48m
Air Canada
Deal found 4/24![Air Canada logo]()
$100
This Mytrip deal was found by Cheapflights users on 4/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/55:50 am
BOS
- YTZ
1 stop6h 02m
Air Canada
Deal found 4/24![Air Canada logo]()
$100
This Trip.com deal was found by Cheapflights users on 4/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/93:25 pm
BOS
- YYZ
1 stop4h 59m
Porter Airlines
Deal found 4/25![Porter Airlines logo]()
$101
This FlightHub deal was found by Cheapflights users on 4/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/83:25 pm
BOS
- YTZ
1 stop6h 28m
Porter Airlines
Deal found 4/25![Porter Airlines logo]()
$101
This Trip.com deal was found by Cheapflights users on 4/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/143:25 pm
BOS
- YYZ
1 stop4h 19m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$102
This Trip.com deal was found by Cheapflights users on 4/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/108:30 pm
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Deal found 4/26![Porter Airlines logo]()
$102
This FlightHub deal was found by Cheapflights users on 4/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/86:35 pm
BOS
- YYZ
Nonstop1h 55m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$103
This Super.com deal was found by Cheapflights users on 4/28. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/294:45 pm
BOS
- YTZ
1 stop5h 35m
Porter Airlines
Deal found 4/28![Porter Airlines logo]()
$103
This FlightHub deal was found by Cheapflights users on 4/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/96:35 pm
BOS
- YYZ
Nonstop1h 55m
Porter Airlines
Deal found 4/26![Porter Airlines logo]()
$104
Find flight deals from Boston to Ontario
Keep the following information in mind while searching for Boston to Ontario flight deals. Data was last updated April 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $218 (Kiwi.com) |
One-way from | $98 (Super.com) |
Popular in | April |
Cheapest in | October |
Average price | $415 |
Good round-trip deal | $285 or less |
Good one-way deal | $150 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston to Ontario 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 April 28, 2026.
Use the filters below to find and compare flights from Boston to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
BostonToronto
BOS - YTZ
BOSYTZ
Boston Logan Intl
Sat 5/16
7:10 am-8:57 am
Nonstop1h 47m
Toronto Island
Tue 5/19
3:05 pm-4:46 pm
Nonstop1h 41m
$267
BostonOttawa
BOS - YOW
BOSYOW
Boston Logan Intl
Sat 5/16
3:25 pm-4:50 pm
Nonstop1h 25m
Ottawa
Mon 5/18
4:20 pm-9:12 am
1 stop16h 52m
$270
BostonToronto
BOS - YTZ
BOSYTZ
Boston Logan Intl
Wed 5/27
5:30 pm-7:17 pm
Nonstop1h 47m
Toronto Island
Tue 6/9
1:50 pm-7:05 pm
1 stop5h 15m
$272
BostonToronto
BOS - YYZ
BOSYYZ
Boston Logan Intl
Tue 5/26
6:35 pm-8:30 pm
Nonstop1h 55m
Toronto Pearson Intl
Tue 6/2
7:25 am-9:05 am
Nonstop1h 40m
$276
BostonToronto
BOS - YTZ
BOSYTZ
Boston Logan Intl
Tue 5/19
3:25 pm-6:58 pm
1 stop3h 33m
Toronto Island
Sun 5/24
6:05 pm-7:46 pm
Nonstop1h 41m
$279
BostonToronto
BOS - YYZ
BOSYYZ
Boston Logan Intl
Sun 5/17
3:25 pm-7:44 pm
1 stop4h 19m
Toronto Pearson Intl
Mon 5/18
7:25 am-9:05 am
Nonstop1h 40m
$281
BostonToronto
BOS - YYZ
BOSYYZ
Boston Logan Intl
Tue 6/2
3:25 pm-8:24 pm
1 stop4h 59m
Toronto Pearson Intl
Sun 6/14
7:25 am-9:05 am
Nonstop1h 40m
$281
BostonToronto
BOS - YYZ
BOSYYZ
Boston Logan Intl
Wed 6/3
6:35 pm-8:30 pm
Nonstop1h 55m
Toronto Pearson Intl
Sat 6/6
3:40 pm-8:55 pm
1 stop5h 15m
$285
BostonToronto
BOS - YYZ
BOSYYZ
Boston Logan Intl
Wed 5/20
3:25 pm-7:44 pm
1 stop4h 19m
Toronto Pearson Intl
Wed 5/27
3:40 pm-8:55 pm
1 stop5h 15m
$290
BostonToronto
BOS - YYZ
BOSYYZ
Boston Logan Intl
Thu 9/3
6:35 pm-8:30 pm
Nonstop1h 55m
Toronto Pearson Intl
Tue 9/8
3:55 pm-5:35 pm
Nonstop1h 40m
$293
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Boston to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Boston with our price prediction graph.
BOS-YTZ
BOS-YYZ
BOS-YUL
BOS-YXU
BOS-YOW
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 Boston to Ontario
BOS-CAON
BOS-YTZ
BOS-YYZ
BOS-YUL
BOS-YXU
How far ahead should I book a flight from Boston to Region of Ontario?
Booking 54 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boston to Region of Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Boston to Region of Ontario?
Currently, March is the cheapest month in which you can book a flight from Boston to Region of Ontario (average of $96). Flying from Boston to Region of Ontario in February is currently the most expensive (average of $739). 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.
What is the cheapest time of day to fly from BOS to ON?
Find hourly flight availability from Boston to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 28, 2026.
A simple way to save on the total cost of your ticket is to fly from Boston to Region of Ontario in the morning. If you’re flexible enough to do this you can expect to save up to 22% on your trip compared to booking a flight in the evening.
What is the cheapest day to fly from Boston to Region of Ontario?
Use this chart to determine the cheapest time to fly round-trip from Boston to Ontario. Price data was last updated on April 25, 2026.
Travelers seeking maximum savings on their Boston to Region of Ontario flight should consider departing on Saturday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Boston to Region of Ontario
Explore weekly flight availability from Boston to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 28, 2026.
The most flights from BOS to CAON are scheduled on a Monday (13 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (6 on average).
How much does it cost to fly round-trip from Boston to Region of Ontario?
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated April 28, 2026.
Read through reviews of airlines operating flights from Boston to Ontario, such as Porter Airlines,Delta, andAir Transat. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Crew
8.6
Boarding
8.2
Overall
8.0
Entertainment
7.0
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Comfort
8.0
Crew
8.6
Boarding
8.2
Overall
8.0
Entertainment
7.0
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Comfort
8.0
Crew
8.6
Boarding
8.2
Overall
8.0
Entertainment
7.0
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Comfort
8.0
Crew
8.6
Boarding
8.2
Overall
8.0
Entertainment
7.0
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Comfort
8.0
Crew
8.6
Boarding
8.2
Overall
8.0
Entertainment
7.0
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Comfort
8.0
Crew
8.6
Boarding
8.2
Overall
8.0
Entertainment
7.0
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Related info for your journey
Find useful and relevant information for your journey from Boston to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Boston to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Boston to Ontario by cabin class
Find flights from Boston to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and Ontario flights
Browse other Boston and Ontario flight options. Last updated on April 28, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Boston to Ontario flights
Consider these flights traveling from Boston to Ontario.
Top 6 airlines flying from Boston to Ontario
Discover the top 6 airlines that operate flights from Boston to Ontario. 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 April 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$104 | Average$302 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$106 | Average$491 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$128 | Average$190 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$145 | Average$366 | FlexibilityNo cancel fee | On-time50% | |
| Cheapest$279 | Average$397 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$300 | Average$453 | FlexibilityNo cancel fee | On-time71% |