$128+ Cheap flights from Ontario to Boston (BOS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — BOS
Oct 30 — Nov 61
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Boston 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 Boston
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Cheapest flights from Ontario to BostonExplore the most affordable flight options available from Ontario to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 30, 2026.
Explore the most affordable flight options available from Ontario to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 30, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 9/30. 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.
Tue 10/207:25 am -
Nonstop1h 40m
Thu 10/227:30 pm -
Nonstop1h 55m
Deal found 9/30![Porter Airlines logo]()
$190
This Cheapflightsfares deal was found by Cheapflights users on 9/30. 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.
Wed 10/214:55 pm -
Nonstop1h 40m
Wed 10/289:50 am -
Nonstop2h 10m
Deal found 9/30![Porter Airlines logo]()
$191
This Super.com deal was found by Cheapflights users on 9/29. 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.
Sat 10/247:25 am -
Nonstop1h 40m
Sat 10/319:50 am -
Nonstop2h 10m
Deal found 9/29![Porter Airlines logo]()
$193
This Cheapflightsfares deal was found by Cheapflights users on 9/29. 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 10/221:35 pm -
Nonstop1h 39m
Sun 10/258:00 am -
Nonstop1h 54m
Deal found 9/29![Porter Airlines logo]()
$194
This Super.com deal was found by Cheapflights users on 9/30. 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.
Sat 10/247:25 am -
Nonstop1h 40m
Sat 10/243:55 pm -
1 stop6h 09m
Deal found 9/30![Porter Airlines logo]()
$194
This Cheapflightsfares deal was found by Cheapflights users on 9/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:35 pm -
Nonstop1h 39m
Fri 10/236:20 pm -
Nonstop1h 47m
Deal found 9/28![Porter Airlines logo]()
$195
This Justfly.com deal was found by Cheapflights users on 9/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:20 am -
Nonstop1h 50m
Thu 10/299:50 am -
Nonstop2h 10m
Deal found 9/30![Porter Airlines logo]()
$195
This Cheapflightsfares deal was found by Cheapflights users on 9/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:00 pm -
Nonstop1h 39m
Fri 10/237:00 am -
Nonstop1h 47m
Deal found 9/25![Porter Airlines logo]()
$196
This Justfly.com deal was found by Cheapflights users on 9/29. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:20 am -
Nonstop1h 50m
Sat 10/319:50 am -
Nonstop2h 10m
Deal found 9/29![Porter Airlines logo]()
$196
This SmartFares deal was found by Cheapflights users on 9/26. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/172:20 pm -
Nonstop1h 45m
Sun 10/186:00 am -
Nonstop1h 56m
Deal found 9/26![Air Canada logo]()
$197
This Super.com deal was found by Cheapflights users on 9/26. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1711:55 am -
1 stop4h 02m
Sun 10/187:00 am -
Nonstop1h 47m
Deal found 9/26![Porter Airlines logo]()
$198
This Justfly.com deal was found by Cheapflights users on 9/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/214:55 pm -
Nonstop1h 40m
Tue 10/279:50 am -
Nonstop2h 10m
Deal found 9/30![Porter Airlines logo]()
$198
Best flights from Ontario to BostonDiscover carefully curated flight deals from Ontario to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 30, 2026.
Discover carefully curated flight deals from Ontario to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 30, 2026.
This Justfly.com deal was found by Cheapflights users on 9/25. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:35 pm -
Nonstop1h 39m
Fri 10/236:20 pm -
Nonstop1h 47m
Deal found 9/25![Porter Airlines logo]()
$207
This FlightHub deal was found by Cheapflights users on 9/25. 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.
Wed 10/144:55 pm -
Nonstop1h 40m
Fri 10/2310:05 am -
Nonstop1h 55m
Deal found 9/25![Air Transat logo]()
$239
This United deal was found by Cheapflights users on 9/27. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:50 am -
1 stop5h 17m
Sat 10/245:50 am -
2 stops7h 12m
Deal found 9/27![Multiple Airlines logo]()
$247
This United Airlines deal was found by Cheapflights users on 9/25. 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.
Fri 10/232:45 pm -
1 stop8h 39m
Fri 10/307:05 pm -
1 stop4h 21m
Deal found 9/25![United Airlines logo]()
$250
This Air Canada deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/143:00 pm -
1 stop6h 26m
Fri 10/2312:45 pm -
Nonstop1h 48m
Deal found 9/25![Air Canada logo]()
$299
This Justfly.com deal was found by Cheapflights users on 9/25. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/302:20 pm -
Nonstop1h 32m
Fri 10/307:50 pm -
Nonstop1h 54m
Deal found 9/25![Porter Airlines logo]()
$207
This Porter Airlines deal was found by Cheapflights users on 9/27. 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 10/2010:30 am -
1 stop5h 27m
Sun 10/258:00 am -
Nonstop1h 54m
Deal found 9/27![Porter Airlines logo]()
$250
This United Airlines deal was found by Cheapflights users on 9/29. 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 10/2912:55 pm -
1 stop5h 39m
Thu 11/56:00 am -
1 stop8h 03m
Deal found 9/29![United Airlines logo]()
$280
This Porter Airlines deal was found by Cheapflights users on 9/27. 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.
Mon 10/194:00 pm -
Nonstop1h 39m
Fri 10/234:55 pm -
Nonstop1h 47m
Deal found 9/27![Porter Airlines logo]()
$253
This United Airlines deal was found by Cheapflights users on 9/29. 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 11/212:57 pm -
1 stop3h 56m
Tue 12/112:00 pm -
1 stop5h 49m
Deal found 9/29![United Airlines logo]()
$310
This FlightHub deal was found by Cheapflights users on 9/25. 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.
Thu 10/299:00 am -
2 stops7h 42m
Sun 11/18:00 am -
Nonstop1h 54m
Deal found 9/25![Porter Airlines logo]()
$263
This United deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:55 pm -
1 stop5h 34m
Sun 11/15:30 am -
2 stops7h 53m
Deal found 9/26![Multiple Airlines logo]()
$375
This Porter Airlines deal was found by Cheapflights users on 9/26. 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.
Wed 10/1410:30 am -
1 stop5h 27m
Sun 10/187:00 am -
Nonstop1h 47m
Deal found 9/26![Porter Airlines logo]()
$273
This United Airlines deal was found by Cheapflights users on 9/27. 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.
Fri 10/3010:30 am -
1 stop5h 20m
Fri 10/307:05 pm -
1 stop4h 21m
Deal found 9/27![United Airlines logo]()
$332
This United deal was found by Cheapflights users on 9/30. 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 10/226:05 am -
1 stop3h 39m
Sun 10/259:35 am -
1 stop6h 57m
Deal found 9/30![Multiple Airlines logo]()
$391
This Porter Airlines deal was found by Cheapflights users on 9/26. 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 10/159:00 am -
2 stops8h 17m
Sun 10/187:00 am -
Nonstop1h 47m
Deal found 9/26![Porter Airlines logo]()
$273
This United Airlines deal was found by Cheapflights users on 9/27. 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.
Sat 10/248:10 am -
Nonstop1h 45m
Sun 10/255:45 am -
Nonstop2h 05m
Deal found 9/27![United Airlines logo]()
$335
This United Airlines deal was found by Cheapflights users on 9/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/204:05 pm -
2 stops6h 40m
Thu 10/226:00 am -
1 stop4h 40m
Deal found 9/28![United Airlines logo]()
$339
This FlightHub deal was found by Cheapflights users on 9/25. 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 12/2810:35 am -
1 stop6h 07m
Thu 12/311:15 pm -
1 stop5h 13m
Deal found 9/25![Porter Airlines logo]()
$281
This Porter Airlines deal was found by Cheapflights users on 9/28. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3012:15 pm -
1 stop4h 27m
Sat 12/121:15 pm -
1 stop5h 13m
Deal found 9/28![Porter Airlines logo]()
$281
This Air Canada deal was found by Cheapflights users on 9/28. 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.
Thu 11/124:35 pm -
1 stop6h 02m
Thu 11/195:30 am -
2 stops10h 28m
Deal found 9/28![Air Canada logo]()
$572
This United Airlines deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/189:44 am -
1 stop6h 06m
Sun 11/227:15 am -
1 stop4h 33m
Deal found 9/29![United Airlines logo]()
$362
This Porter Airlines deal was found by Cheapflights users on 9/29. 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.
Fri 12/117:00 am -
2 stops9h 42m
Mon 12/141:15 pm -
1 stop5h 13m
Deal found 9/29![Porter Airlines logo]()
$296
This Air Canada deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2111:45 am -
2 stops9h 41m
Sat 10/245:50 am -
2 stops11h 28m
Deal found 9/25![Air Canada logo]()
$603
This Porter Airlines deal was found by Cheapflights users on 9/28. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/210:35 am -
1 stop6h 07m
Tue 12/157:50 pm -
Nonstop1h 54m
Deal found 9/28![Porter Airlines logo]()
$296
This lol.travel deal was found by Cheapflights users on 9/26. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/265:30 am -
1 stop4h 52m
Mon 11/211:15 am -
1 stop4h 43m
Deal found 9/26![Air Canada logo]()
$611
This Porter Airlines deal was found by Cheapflights users on 9/27. 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 11/117:00 am -
2 stops9h 42m
Wed 11/181:15 pm -
1 stop5h 13m
Deal found 9/27![Porter Airlines logo]()
$296
This Air Canada deal was found by Cheapflights users on 9/30. 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.
Sun 11/85:30 am -
1 stop4h 52m
Mon 11/1611:15 am -
1 stop4h 43m
Deal found 9/30![Air Canada logo]()
$631
This United Airlines deal was found by Cheapflights users on 9/30. 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 10/286:00 am -
1 stop9h 50m
Sat 10/3112:14 pm -
2 stops9h 36m
Deal found 9/30![United Airlines logo]()
$481
This Porter Airlines deal was found by Cheapflights users on 9/29. 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 11/267:20 am -
Nonstop1h 50m
Thu 11/265:25 pm -
Nonstop2h 10m
Deal found 9/29![Porter Airlines logo]()
$320
Last-minute flights from Ontario to BostonDiscover last-minute flight deals from Ontario to Boston. Data last updated September 30, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Boston. Data last updated September 30, 2026 and is based on user searches.
This SmartFares deal was found by Cheapflights users on 9/26. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/172:20 pm -
Nonstop1h 45m
Sun 10/186:00 am -
Nonstop1h 56m
Deal found 9/26![Air Canada logo]()
$197
This Super.com deal was found by Cheapflights users on 9/26. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1711:55 am -
1 stop4h 02m
Sun 10/187:00 am -
Nonstop1h 47m
Deal found 9/26![Porter Airlines logo]()
$198
This Cheapflightsfares deal was found by Cheapflights users on 9/30. 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.
Tue 10/207:25 am -
Nonstop1h 40m
Thu 10/227:30 pm -
Nonstop1h 55m
Deal found 9/30![Porter Airlines logo]()
$190
This Cheapflightsfares deal was found by Cheapflights users on 9/30. 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.
Wed 10/214:55 pm -
Nonstop1h 40m
Wed 10/289:50 am -
Nonstop2h 10m
Deal found 9/30![Porter Airlines logo]()
$191
This Cheapflightsfares deal was found by Cheapflights users on 9/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:00 pm -
Nonstop1h 39m
Fri 10/237:00 am -
Nonstop1h 47m
Deal found 9/25![Porter Airlines logo]()
$196
This Justfly.com deal was found by Cheapflights users on 9/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/214:55 pm -
Nonstop1h 40m
Tue 10/279:50 am -
Nonstop2h 10m
Deal found 9/30![Porter Airlines logo]()
$198
This Cheapflightsfares deal was found by Cheapflights users on 9/29. 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 10/221:35 pm -
Nonstop1h 39m
Sun 10/258:00 am -
Nonstop1h 54m
Deal found 9/29![Porter Airlines logo]()
$194
This Cheapflightsfares deal was found by Cheapflights users on 9/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:35 pm -
Nonstop1h 39m
Fri 10/236:20 pm -
Nonstop1h 47m
Deal found 9/28![Porter Airlines logo]()
$195
This Super.com deal was found by Cheapflights users on 9/29. 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.
Sat 10/247:25 am -
Nonstop1h 40m
Sat 10/319:50 am -
Nonstop2h 10m
Deal found 9/29![Porter Airlines logo]()
$193
This Super.com deal was found by Cheapflights users on 9/30. 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.
Sat 10/247:25 am -
Nonstop1h 40m
Sat 10/243:55 pm -
1 stop6h 09m
Deal found 9/30![Porter Airlines logo]()
$194
This Justfly.com deal was found by Cheapflights users on 9/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:20 am -
Nonstop1h 50m
Thu 10/299:50 am -
Nonstop2h 10m
Deal found 9/30![Porter Airlines logo]()
$195
This Justfly.com deal was found by Cheapflights users on 9/29. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:20 am -
Nonstop1h 50m
Sat 10/319:50 am -
Nonstop2h 10m
Deal found 9/29![Porter Airlines logo]()
$196
One-way flights from Ontario to BostonSearch for one-way flight options from Ontario to Boston. Find affordable one-way fares based on user searches. Data last updated September 30, 2026.
Search for one-way flight options from Ontario to Boston. Find affordable one-way fares based on user searches. Data last updated September 30, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 9/30. 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.
Wed 10/211:35 pm -
Nonstop1h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Porter Airlines logo]()
$128
This Trip.com deal was found by Cheapflights users on 9/29. 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 10/297:20 am -
Nonstop1h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Porter Airlines logo]()
$128
This Cheapflightsfares deal was found by Cheapflights users on 9/29. 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.
Fri 10/231:35 pm -
Nonstop1h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Porter Airlines logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 9/28. 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.
Mon 10/197:25 am -
Nonstop1h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Porter Airlines logo]()
$129
This FlightHub deal was found by Cheapflights users on 9/29. 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.
Fri 10/237:25 am -
Nonstop1h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Air Transat logo]()
$130
This Air Canada deal was found by Cheapflights users on 9/29. 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 10/229:30 am -
1 stop5h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Air Canada logo]()
$133
This Air Canada deal was found by Cheapflights users on 9/30. 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 10/2810:00 am -
1 stop4h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Air Canada logo]()
$133
This Air Canada deal was found by Cheapflights users on 9/29. 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 10/239:30 am -
1 stop5h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Air Canada logo]()
$134
This Air Canada deal was found by Cheapflights users on 9/26. 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.
Tue 10/204:25 pm -
Nonstop1h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Air Canada logo]()
$134
This FlightHub deal was found by Cheapflights users on 9/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/201:35 pm -
Nonstop1h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Porter Airlines logo]()
$135
This Mytrip deal was found by Cheapflights users on 9/29. 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.
Thu 10/226:00 pm -
Nonstop1h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Porter Airlines logo]()
$136
This Flysmarter deal was found by Cheapflights users on 9/30. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:30 am -
1 stop4h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Air Canada logo]()
$138
Find flight deals from Ontario to Boston
Keep the following information in mind while searching for Ontario to Boston flight deals. Data was last updated September 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $190 (Cheapflightsfares) |
One-way from | $128 (Cheapflightsfares) |
Popular in | April |
Cheapest in | July |
Average price | $259 |
Good round-trip deal | $241 or less |
Good one-way deal | $153 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 30, 2026.
Use the filters below to find and compare flights from Ontario to Boston that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
TorontoBoston
YTZ Toronto Island - BOS Boston Logan Intl
YTZBOS
Toronto Island
Thu 10/22
9:30 am-2:41 pm
1 stop5h 11m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$133
TorontoBoston
YYZ Toronto Pearson Intl - BOS Boston Logan Intl
YYZBOS
Toronto Pearson Intl
Sat 10/24
7:43 pm-11:59 pm
1 stop4h 16m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$150
TorontoBoston
YYZ Toronto Pearson Intl - BOS Boston Logan Intl
YYZBOS
Toronto Pearson Intl
Mon 10/26
6:45 am-12:46 pm
1 stop6h 01m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$154
TorontoBoston
YTZ Toronto Island - BOS Boston Logan Intl
YTZBOS
Toronto Island
Wed 11/11
12:15 pm-4:42 pm
1 stop4h 27m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$156
TorontoBoston
YTZ Toronto Island - BOS Boston Logan Intl
YTZBOS
Toronto Island
Fri 12/18
10:35 am-4:42 pm
1 stop6h 07m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$158
TorontoBoston
YTZ Toronto Island - BOS Boston Logan Intl
YTZBOS
Toronto Island
Fri 10/23
8:00 am-3:57 pm
2 stops7h 57m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$165
TorontoBoston
YTZ Toronto Island - BOS Boston Logan Intl
YTZBOS
Toronto Island
Thu 11/12
10:35 am-4:42 pm
1 stop6h 07m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$170
TorontoBoston
YTZ Toronto Island - BOS Boston Logan Intl
YTZBOS
Toronto Island
Tue 11/10
12:15 pm-4:42 pm
1 stop4h 27m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$170
TorontoBoston
YTZ Toronto Island - BOS Boston Logan Intl
YTZBOS
Toronto Island
Mon 11/9
10:35 am-4:42 pm
1 stop6h 07m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$170
TorontoBoston
YTZ Toronto Island - BOS Boston Logan Intl
YTZBOS
Toronto Island
Sat 11/7
9:00 am-4:42 pm
2 stops7h 42m
Boston Logan Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$170
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Boston
Have a flexible travel schedule? Discover the best time to fly to Boston from Ontario with our price prediction graph.
YYZ-BOS
YTZ-BOS
YOW-BOS
YAM-BOS
YQT-BOS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Boston
CAON-BOS
YYZ-BOS
YTZ-BOS
YOW-BOS
YAM-BOS
What is the cheapest month to book a flight from Region of Ontario to Boston?
Currently, September is the cheapest month in which you can book a flight from Region of Ontario to Boston (average of $263). Flying from Region of Ontario to Boston in April is currently the most expensive (average of $345). 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 ON to BOS?
Find hourly flight availability from Ontario to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 30, 2026.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 53% on flights from Region of Ontario to Boston by exploring options for tickets in the morning.
Weekly flight availability from Region of Ontario to Boston
Explore weekly flight availability from Ontario to Boston. 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 September 30, 2026.
The most flights from CAON to BOS are scheduled on a Monday (19 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (6 on average).
How much does it cost to fly round-trip from Region of Ontario to Boston?
Airfare is below average for this route at the moment.
Region of Ontario to Boston flights typically cost between $236 and $401 in October.The cheapest round-trip price found within the last 5 days was $190 on Porter Airlines (Oct 20-Oct 22).
How far ahead should I book a flight from Region of Ontario to Boston?
The price you pay for your flight from Region of Ontario to Boston may vary depending on when you book. For the best chance of a lower fare, look to book 85 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest day to fly from Region of Ontario to Boston?
Use this chart to determine the cheapest time to fly round-trip from Ontario to Boston. Price data was last updated on September 26, 2026.
Travelers seeking maximum savings on their Region of Ontario to Boston flight should consider departing on Saturday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Related info for your journey
Find useful and relevant information for your journey from Ontario to Boston. 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 Boston?
Book flights to Boston if you plan to visit one of these locationsWaltham
Randolph
Concord
Cambridge
Brockton
Dedham
Cranston
Revere
Warwick
Pawtucket
Peabody
Auburn
Londonderry
York Beach
Fitchburg
North Falmouth
Swansea
Chelsea
Braintree
Sandwich
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.
Alternative routes
Boston flight routes
Complete your trip
Flights by cabin class
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Popular flights
Alternative routes for Ontario to Boston
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Boston
Explore flights to Boston departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 30, 2026.
Complete your trip
Complete your trip to Boston by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Boston by cabin class
Find flights from Ontario to Boston, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Boston flights
Browse other Ontario and Boston flight options. Last updated on September 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from Ontario to Boston
Discover the top 5 airlines that operate flights from Ontario to Boston. 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 7,457,451 searches. Data last updated September 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$172 | Average$313 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$189 | Average$292 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$246 | Average$420 | FlexibilityNo cancel fee | On-time50% | |
| Cheapest$305 | Average$553 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$311 | Average$360 | FlexibilityNo cancel fee | On-time71% |