$81+ 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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YYZ
Jul 13 — Jul 201
Round-trip
1 adult, Economy
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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 June 13, 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 June 13, 2026.
This Super.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/237:10 am
BOS
- YTZ
Nonstop1h 49m
Porter Airlines
Mon 7/273:05 pm
YTZ
- BOS
Nonstop1h 39m
Porter Airlines
Deal found 6/8![Porter Airlines logo]()
$197
This Super.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/98:25 pm
BOS
- YTZ
Nonstop1h 49m
Porter Airlines
Sun 7/128:50 am
YTZ
- BOS
Nonstop1h 39m
Porter Airlines
Deal found 6/8![Porter Airlines logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/237:10 am
BOS
- YTZ
Nonstop1h 49m
Porter Airlines
Thu 7/308:50 am
YTZ
- BOS
Nonstop1h 39m
Porter Airlines
Deal found 6/9![Porter Airlines logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/308:25 pm
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Wed 7/153:05 pm
YTZ
- BOS
Nonstop1h 39m
Porter Airlines
Deal found 6/8![Porter Airlines logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/308:25 pm
BOS
- YTZ
Nonstop1h 49m
Porter Airlines
Mon 8/38:50 am
YTZ
- BOS
Nonstop1h 40m
Porter Airlines
Deal found 6/8![Porter Airlines logo]()
$203
This Super.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:30 pm
BOS
- YYZ
Nonstop1h 55m
Porter Airlines
Wed 7/224:55 pm
YYZ
- BOS
Nonstop1h 40m
Porter Airlines
Deal found 6/8![Porter Airlines logo]()
$206
This Super.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/287:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Wed 7/16:05 pm
YTZ
- BOS
Nonstop1h 39m
Porter Airlines
Deal found 6/8![Porter Airlines logo]()
$206
This Super.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/98:10 pm
BOS
- YYZ
Nonstop1h 55m
Porter Airlines
Sun 8/167:25 am
YYZ
- BOS
Nonstop1h 40m
Porter Airlines
Deal found 6/8![Porter Airlines logo]()
$207
This FlightHub deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Sun 9/273:05 pm
YTZ
- BOS
Nonstop1h 41m
Porter Airlines
Deal found 6/12![Porter Airlines logo]()
$207
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/711:10 am
BOS
- YTZ
Nonstop1h 49m
Porter Airlines
Tue 7/143:05 pm
YTZ
- BOS
Nonstop1h 39m
Porter Airlines
Deal found 6/9![Porter Airlines logo]()
$208
This FlipMilhas deal was found by Cheapflights users on 6/11. 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 FlipMilhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/136:00 am
BOS
- YYZ
Nonstop1h 56m
GOL
Wed 9/168:10 am
YYZ
- BOS
Nonstop1h 45m
GOL
Deal found 6/11![GOL logo]()
$209
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 7/167:10 am
BOS
- YTZ
Nonstop1h 49m
Porter Airlines
Mon 7/203:05 pm
YTZ
- BOS
Nonstop1h 39m
Porter Airlines
Deal found 6/11![Porter Airlines logo]()
$209
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 June 13, 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 June 13, 2026.
This KAYAK deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:35 pm
BOS
- YTZ
Nonstop1h 59m
Air Canada
Fri 7/177:15 am
YTZ
- BOS
Nonstop1h 37m
Air Canada
Deal found 6/12![Air Canada logo]()
$256
This Porter Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/214:45 pm
BOS
- YTZ
1 stop5h 33m
Porter Airlines
Thu 7/236:05 pm
YTZ
- BOS
Nonstop1h 39m
Porter Airlines
Deal found 6/9![Porter Airlines logo]()
$264
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/235:45 am
BOS
- YUL
Nonstop1h 30m
United Airlines
Sun 7/268:20 am
YUL
- BOS
Nonstop1h 25m
United Airlines
Deal found 6/9![United Airlines logo]()
$265
This United deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/278:00 am
BOS
- YUL
1 stop14h 06m
Multiple Airlines
Sun 6/288:25 am
YUL
- BOS
Nonstop1h 25m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$275
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/89:00 am
BOS
- YYZ
1 stop9h 09m
Delta
Thu 7/236:59 pm
YYZ
- BOS
1 stop4h 32m
Delta
Deal found 6/10![Delta logo]()
$290
This Porter Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/234:45 pm
BOS
- YTZ
1 stop5h 35m
Porter Airlines
Sun 8/306:00 pm
YTZ
- BOS
Nonstop1h 41m
Porter Airlines
Deal found 6/9![Porter Airlines logo]()
$264
This KAYAK deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1510:50 am
BOS
- YYZ
Nonstop1h 55m
Air Canada
Fri 7/174:35 pm
YYZ
- BOS
Nonstop1h 47m
Air Canada
Deal found 6/12![Air Canada logo]()
$265
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/98:00 am
BOS
- YUL
1 stop8h 10m
United Airlines
Sun 7/128:20 am
YUL
- BOS
Nonstop1h 25m
United Airlines
Deal found 6/9![United Airlines logo]()
$275
This United deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:05 am
BOS
- YUL
1 stop7h 04m
Multiple Airlines
Mon 7/138:55 am
YUL
- BOS
1 stop5h 07m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$280
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/89:00 am
BOS
- YYZ
1 stop9h 09m
Delta
Fri 7/246:59 pm
YYZ
- BOS
1 stop4h 32m
Delta
Deal found 6/10![Delta logo]()
$290
This Porter Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2310:05 am
BOS
- YYZ
Nonstop1h 55m
Porter Airlines
Thu 7/304:55 pm
YYZ
- BOS
Nonstop1h 40m
Porter Airlines
Deal found 6/8![Porter Airlines logo]()
$265
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/237:27 pm
BOS
- YUL
1 stop4h 46m
United Airlines
Wed 6/241:15 pm
YUL
- BOS
Nonstop1h 26m
United Airlines
Deal found 6/9![United Airlines logo]()
$275
This United deal was found by Cheapflights users on 6/11. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:00 pm
BOS
- YYZ
1 stop4h 23m
Multiple Airlines
Wed 8/263:30 pm
YYZ
- BOS
1 stop5h 57m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$283
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:51 am
BOS
- YYZ
1 stop8h 24m
Delta
Fri 7/246:59 pm
YYZ
- BOS
1 stop4h 32m
Delta
Deal found 6/10![Delta logo]()
$295
This Porter Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2110:05 am
BOS
- YYZ
Nonstop1h 55m
Porter Airlines
Thu 7/233:40 pm
YYZ
- BOS
1 stop5h 15m
Porter Airlines
Deal found 6/9![Porter Airlines logo]()
$273
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2410:35 am
BOS
- YYZ
1 stop7h 21m
United Airlines
Tue 7/78:10 am
YYZ
- BOS
Nonstop1h 43m
United Airlines
Deal found 6/9![United Airlines logo]()
$285
This United deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/49:25 am
BOS
- YUL
1 stop10h 20m
Multiple Airlines
Sun 7/58:20 am
YUL
- BOS
Nonstop1h 25m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$289
This Porter Airlines deal was found by Cheapflights users on 6/11. 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 7/283:35 pm
BOS
- YYZ
1 stop6h 29m
Porter Airlines
Wed 8/53:40 pm
YYZ
- BOS
1 stop5h 15m
Porter Airlines
Deal found 6/11![Porter Airlines logo]()
$278
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/196:00 am
BOS
- YYZ
1 stop9h 46m
United Airlines
Wed 7/225:27 pm
YYZ
- BOS
1 stop7h 47m
United Airlines
Deal found 6/11![United Airlines logo]()
$290
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/127:19 am
BOS
- YYZ
1 stop8h 27m
United Airlines
Fri 7/175:15 pm
YYZ
- BOS
1 stop7h 59m
United Airlines
Deal found 6/11![United Airlines logo]()
$290
This Porter Airlines deal was found by Cheapflights users on 6/11. 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 7/45:30 pm
BOS
- YTZ
Nonstop1h 49m
Porter Airlines
Fri 7/106:05 pm
YTZ
- BOS
Nonstop1h 39m
Porter Airlines
Deal found 6/11![Porter Airlines logo]()
$315
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/89:35 am
BOS
- YTZ
Nonstop1h 54m
United Airlines
Mon 10/125:20 pm
YTZ
- BOS
Nonstop1h 29m
United Airlines
Deal found 6/8![United Airlines logo]()
$318
This United deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/246:00 am
BOS
- YOW
1 stop15h 35m
Multiple Airlines
Thu 6/256:00 am
YOW
- BOS
1 stop3h 50m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$393
This Porter Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/144:45 pm
BOS
- YTZ
1 stop5h 33m
Porter Airlines
Tue 7/219:00 am
YTZ
- BOS
2 stops7h 00m
Porter Airlines
Deal found 6/9![Porter Airlines logo]()
$334
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:00 am
BOS
- YUL
2 stops12h 10m
Delta
Sun 9/139:28 am
YUL
- BOS
1 stop6h 58m
Delta
Deal found 6/12![Delta logo]()
$447
This Trip.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/2512:30 pm
BOS
- YQG
1 stop6h 32m
Air Canada
Sat 8/110:05 am
YQG
- BOS
1 stop5h 58m
Air Canada
Deal found 6/10![Air Canada logo]()
$509
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/273:20 pm
BOS
- YUL
Nonstop1h 25m
United Airlines
Thu 10/291:10 pm
YUL
- BOS
Nonstop1h 27m
United Airlines
Deal found 6/9![United Airlines logo]()
$340
This Porter Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/144:45 pm
BOS
- YTZ
1 stop5h 33m
Porter Airlines
Sat 7/189:00 am
YTZ
- BOS
2 stops7h 00m
Porter Airlines
Deal found 6/12![Porter Airlines logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/263:35 pm
BOS
- YOW
Nonstop1h 28m
Multiple Airlines
Fri 7/316:55 am
YOW
- BOS
1 stop7h 59m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$424
This Mytrip deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/253:35 pm
BOS
- YQT
2 stops17h 20m
Multiple Airlines
Sat 8/110:10 am
YQT
- BOS
1 stop9h 05m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$428
Last-minute flights from Boston to OntarioDiscover last-minute flight deals from Boston to Ontario. Data last updated June 13, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Ontario. Data last updated June 13, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/287:10 am
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Wed 7/16:05 pm
YTZ
- BOS
Nonstop1h 39m
Porter Airlines
Deal found 6/8![Porter Airlines logo]()
$206
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/308:25 pm
BOS
- YTZ
Nonstop1h 47m
Porter Airlines
Wed 7/153:05 pm
YTZ
- BOS
Nonstop1h 39m
Porter Airlines
Deal found 6/8![Porter Airlines logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/711:10 am
BOS
- YTZ
Nonstop1h 49m
Porter Airlines
Tue 7/143:05 pm
YTZ
- BOS
Nonstop1h 39m
Porter Airlines
Deal found 6/9![Porter Airlines logo]()
$208
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:30 pm
BOS
- YYZ
Nonstop1h 55m
Porter Airlines
Wed 7/154:55 pm
YYZ
- BOS
Nonstop1h 40m
Porter Airlines
Deal found 6/8![Porter Airlines logo]()
$210
This Super.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/98:25 pm
BOS
- YTZ
Nonstop1h 49m
Porter Airlines
Sun 7/128:50 am
YTZ
- BOS
Nonstop1h 39m
Porter Airlines
Deal found 6/8![Porter Airlines logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 7/145:30 pm
BOS
- YTZ
Nonstop1h 49m
Porter Airlines
Wed 7/156:05 pm
YTZ
- BOS
Nonstop1h 39m
Porter Airlines
Deal found 6/11![Porter Airlines logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 7/167:10 am
BOS
- YTZ
Nonstop1h 49m
Porter Airlines
Mon 7/203:05 pm
YTZ
- BOS
Nonstop1h 39m
Porter Airlines
Deal found 6/11![Porter Airlines logo]()
$209
This Super.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:30 pm
BOS
- YYZ
Nonstop1h 55m
Porter Airlines
Wed 7/224:55 pm
YYZ
- BOS
Nonstop1h 40m
Porter Airlines
Deal found 6/8![Porter Airlines logo]()
$206
This Super.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/237:10 am
BOS
- YTZ
Nonstop1h 49m
Porter Airlines
Mon 7/273:05 pm
YTZ
- BOS
Nonstop1h 39m
Porter Airlines
Deal found 6/8![Porter Airlines logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/237:10 am
BOS
- YTZ
Nonstop1h 49m
Porter Airlines
Thu 7/308:50 am
YTZ
- BOS
Nonstop1h 39m
Porter Airlines
Deal found 6/9![Porter Airlines logo]()
$199
This Mytrip deal was found by Cheapflights users on 6/11. 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 7/267:10 am
BOS
- YTZ
Nonstop1h 49m
Multiple Airlines
Sun 8/27:15 am
YTZ
- BOS
Nonstop1h 37m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/308:25 pm
BOS
- YTZ
Nonstop1h 49m
Porter Airlines
Mon 8/38:50 am
YTZ
- BOS
Nonstop1h 40m
Porter Airlines
Deal found 6/8![Porter Airlines logo]()
$203
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 June 13, 2026.
Search for one-way flight options from Boston to Ontario. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
This FlipMilhas deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlipMilhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/65:45 am
BOS
- YOW
1 stop3h 39m
GOL
Deal found 6/10![GOL logo]()
$81
This Trip.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/274:45 pm
BOS
- YUL
Nonstop1h 30m
Porter Airlines
Deal found 6/12![Porter Airlines logo]()
$99
This oojo deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/247:10 am
BOS
- YUL
1 stop5h 00m
Porter Airlines
Deal found 6/10![Porter Airlines logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/134:45 pm
BOS
- YUL
Nonstop1h 30m
Porter Airlines
Deal found 6/9![Porter Airlines logo]()
$101
This Mytrip deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2210:50 am
BOS
- YUL
1 stop6h 37m
Air Canada
Deal found 6/9![Air Canada logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/295:30 pm
BOS
- YUL
1 stop4h 40m
Porter Airlines
Deal found 6/10![Porter Airlines logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1111:10 am
BOS
- YUL
1 stop7h 00m
Porter Airlines
Deal found 6/9![Porter Airlines logo]()
$105
This Air Canada deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:45 am
BOS
- YUL
Nonstop1h 30m
Air Canada
Deal found 6/10![Air Canada logo]()
$106
This Flightnetwork deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/72:45 pm
BOS
- YUL
2 stops7h 35m
Air Canada
Deal found 6/9![Air Canada logo]()
$107
This Flightnetwork deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/102:45 pm
BOS
- YUL
2 stops7h 35m
Air Canada
Deal found 6/8![Air Canada logo]()
$108
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/711:10 am
BOS
- YUL
1 stop7h 00m
Porter Airlines
Deal found 6/10![Porter Airlines logo]()
$109
This Trip.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/310:05 am
BOS
- YUL
1 stop6h 57m
Porter Airlines
Deal found 6/9![Porter Airlines logo]()
$110
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 June 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $197 (Super.com) |
One-way from | $81 (FlipMilhas) |
Popular in | April |
Cheapest in | October |
Average price | $351 |
Good round-trip deal | $278 or less |
Good one-way deal | $137 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 June 13, 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
BostonToronto
BOS - YTZ
BOSYTZ
Boston Logan Intl
Wed 7/15
7:35 pm-9:34 pm
Nonstop1h 59m
Toronto Island
Fri 7/17
7:15 am-8:52 am
Nonstop1h 37m
$256
BostonToronto
BOS - YTZ
BOSYTZ
Boston Logan Intl
Tue 7/21
4:45 pm-10:18 pm
1 stop5h 33m
Toronto Island
Thu 7/23
6:05 pm-7:44 pm
Nonstop1h 39m
$264
BostonToronto
BOS - YTZ
BOSYTZ
Boston Logan Intl
Sun 8/23
4:45 pm-10:20 pm
1 stop5h 35m
Toronto Island
Sun 8/30
6:00 pm-7:41 pm
Nonstop1h 41m
$264
BostonMontreal
BOS - YUL
BOSYUL
Boston Logan Intl
Thu 7/23
5:45 am-7:15 am
Nonstop1h 30m
Montreal Pierre Elliott Trudeau Intl
Sun 7/26
8:20 am-9:45 am
Nonstop1h 25m
$265
BostonToronto
BOS - YYZ
BOSYYZ
Boston Logan Intl
Wed 7/15
10:50 am-12:45 pm
Nonstop1h 55m
Toronto Pearson Intl
Fri 7/17
4:35 pm-6:22 pm
Nonstop1h 47m
$265
BostonToronto
BOS - YYZ
BOSYYZ
Boston Logan Intl
Thu 7/23
10:05 am-12:00 pm
Nonstop1h 55m
Toronto Pearson Intl
Thu 7/30
4:55 pm-6:35 pm
Nonstop1h 40m
$265
BostonToronto
BOS - YYZ
BOSYYZ
Boston Logan Intl
Tue 7/21
10:05 am-12:00 pm
Nonstop1h 55m
Toronto Pearson Intl
Thu 7/23
3:40 pm-8:55 pm
1 stop5h 15m
$273
BostonMontreal
BOS - YUL
BOSYUL
Boston Logan Intl
Sat 6/27
8:00 am-10:06 pm
1 stop14h 06m
Montreal Pierre Elliott Trudeau Intl
Sun 6/28
8:25 am-9:50 am
Nonstop1h 25m
$275
BostonMontreal
BOS - YUL
BOSYUL
Boston Logan Intl
Thu 7/9
8:00 am-4:10 pm
1 stop8h 10m
Montreal Pierre Elliott Trudeau Intl
Sun 7/12
8:20 am-9:45 am
Nonstop1h 25m
$275
BostonMontreal
BOS - YUL
BOSYUL
Boston Logan Intl
Tue 6/23
7:27 pm-12:13 am
1 stop4h 46m
Montreal Pierre Elliott Trudeau Intl
Wed 6/24
1:15 pm-2:41 pm
Nonstop1h 26m
$275
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-YUL
BOS-YYZ
BOS-YOW
BOS-YQG
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-YUL
BOS-YYZ
BOS-YOW
What is the cheapest month to book a flight from Boston to Region of Ontario?
Currently, December is the cheapest month in which you can book a flight from Boston to Region of Ontario (average of $116). Flying from Boston to Region of Ontario in March is currently the most expensive (average of $1,722). 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 June 13, 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.
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 June 13, 2026.
The most flights from BOS to CAON are scheduled on a Friday (20 on average). You will have fewer flight options on Thursday, 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?
How far ahead should I book a flight from Boston to Region of Ontario?
Booking 61 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 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.
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 June 13, 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.
Overall
8.0
Comfort
8.0
Entertainment
6.9
Food
7.6
Crew
8.6
Boarding
8.2
Reviews
1 / 20
6.0
GoodJustin,May 2026
YYZ - MCO
Overall
8.0
Comfort
8.0
Entertainment
6.9
Food
7.6
Crew
8.6
Boarding
8.2
Reviews
1 / 20
6.0
GoodJustin,May 2026
YYZ - MCO
Overall
8.0
Comfort
8.0
Entertainment
6.9
Food
7.6
Crew
8.6
Boarding
8.2
Reviews
1 / 20
6.0
GoodJustin,May 2026
YYZ - MCO
Overall
8.0
Comfort
8.0
Entertainment
6.9
Food
7.6
Crew
8.6
Boarding
8.2
Reviews
1 / 20
6.0
GoodJustin,May 2026
YYZ - MCO
Overall
8.0
Comfort
8.0
Entertainment
6.9
Food
7.6
Crew
8.6
Boarding
8.2
Reviews
1 / 20
6.0
GoodJustin,May 2026
YYZ - MCO
Overall
8.0
Comfort
8.0
Entertainment
6.9
Food
7.6
Crew
8.6
Boarding
8.2
Reviews
1 / 20
6.0
GoodJustin,May 2026
YYZ - MCO
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
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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 June 13, 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 June 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$102 | Average$323 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$128 | Average$194 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$133 | Average$508 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$145 | Average$388 | FlexibilityNo cancel fee | On-time50% | |
| Cheapest$288 | Average$541 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$300 | Average$402 | FlexibilityNo cancel fee | On-time71% |