$93+ Cheap flights from Boston (BOS) to Ontario
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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — YYZ
Oct 9 — Oct 161
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Ontario 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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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 September 9, 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 September 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:30 pm -
Nonstop1h 55m
Thu 10/157:25 am -
Nonstop1h 40m
Deal found 9/6![Porter Airlines logo]()
$198
This Mytrip deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/179:55 am -
Nonstop1h 47m
Sat 10/313:35 pm -
2 stops5h 53m
Deal found 9/5![Multiple Airlines logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:05 am -
Nonstop1h 55m
Sat 10/177:25 am -
Nonstop1h 40m
Deal found 9/6![Porter Airlines logo]()
$199
This Trip.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/274:30 pm -
Nonstop1h 45m
Sat 10/310:45 am -
1 stop3h 56m
Deal found 9/6![Multiple Airlines logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:30 pm -
Nonstop1h 55m
Sun 10/47:25 am -
Nonstop1h 40m
Deal found 9/6![Porter Airlines logo]()
$200
This Trip.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:55 pm -
1 stop5h 49m
Sun 10/187:25 am -
Nonstop1h 40m
Deal found 9/4![Porter Airlines logo]()
$201
This deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:00 am -
Nonstop1h 47m
Wed 9/3011:55 am -
1 stop3h 55m
Deal found 9/4![Porter Airlines logo]()
$201
This Trip.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:55 pm -
1 stop6h 09m
Fri 10/308:55 pm -
Nonstop1h 42m
Deal found 9/5![Multiple Airlines logo]()
$202
This Super.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/11:15 pm -
1 stop5h 13m
Fri 12/410:35 am -
1 stop6h 07m
Deal found 9/4![Porter Airlines logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/229:50 am -
Nonstop2h 10m
Sun 11/225:20 pm -
Nonstop1h 50m
Deal found 9/6![Porter Airlines logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/125:25 pm -
Nonstop2h 10m
Sun 11/155:20 pm -
Nonstop1h 50m
Deal found 9/5![Porter Airlines logo]()
$204
This Super.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/204:35 pm -
Nonstop1h 54m
Wed 11/2512:15 pm -
1 stop4h 27m
Deal found 9/6![Porter Airlines logo]()
$204
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 September 9, 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 September 9, 2026.
This Porter Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/410:05 am -
Nonstop1h 55m
Sat 10/107:25 am -
Nonstop1h 40m
Deal found 9/6![Porter Airlines logo]()
$239
This Air Canada deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:30 am -
2 stops7h 44m
Thu 10/2910:45 am -
1 stop3h 58m
Deal found 9/4![Air Canada logo]()
$253
This United deal was found by Cheapflights users on 9/8. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/83:00 pm -
1 stop6h 15m
Thu 12/108:00 am -
1 stop6h 53m
Deal found 9/8![Multiple Airlines logo]()
$268
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:43 pm -
1 stop5h 16m
Tue 10/2710:30 am -
1 stop5h 20m
Deal found 9/5![United Airlines logo]()
$275
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/159:10 am -
1 stop8h 28m
Tue 10/207:55 am -
1 stop5h 34m
Deal found 9/4![Delta logo]()
$286
This Air Transat deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Transat is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2010:05 am -
Nonstop1h 55m
Thu 10/17:25 am -
Nonstop1h 40m
Deal found 9/6![Air Transat logo]()
$374
This Porter Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/194:55 pm -
Nonstop1h 47m
Mon 10/2611:00 am -
Nonstop1h 32m
Deal found 9/4![Porter Airlines logo]()
$248
This Porter Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:25 pm -
Nonstop1h 47m
Tue 10/2711:00 am -
Nonstop1h 32m
Deal found 9/5![Porter Airlines logo]()
$249
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:38 am -
1 stop4h 05m
Sun 10/48:50 am -
1 stop7h 31m
Deal found 9/5![United Airlines logo]()
$275
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:00 am -
1 stop9h 12m
Mon 10/196:00 am -
1 stop8h 49m
Deal found 9/4![Delta logo]()
$286
This WestJet deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:30 pm -
1 stop10h 50m
Sun 10/46:10 am -
1 stop11h 30m
Deal found 9/6![WestJet logo]()
$577
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/193:55 pm -
Nonstop1h 28m
Sat 10/246:55 am -
1 stop9h 49m
Deal found 9/9![Multiple Airlines logo]()
$308
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/159:10 am -
1 stop8h 28m
Wed 10/216:00 am -
1 stop8h 49m
Deal found 9/4![Delta logo]()
$286
This Porter Airlines deal was found by Cheapflights users on 9/9. 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.
Sat 10/249:55 am -
Nonstop1h 47m
Sat 10/3111:00 am -
Nonstop1h 30m
Deal found 9/9![Porter Airlines logo]()
$264
This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:40 am -
1 stop6h 52m
Sat 10/35:50 pm -
1 stop3h 36m
Deal found 9/9![Air Canada logo]()
$324
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:00 am -
1 stop9h 12m
Wed 10/216:00 am -
1 stop4h 25m
Deal found 9/4![Delta logo]()
$286
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/269:30 am -
1 stop5h 10m
Sun 9/276:00 am -
1 stop3h 44m
Deal found 9/5![United Airlines logo]()
$321
This United Airlines deal was found by Cheapflights users on 9/8. 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.
Fri 9/257:38 am -
1 stop5h 31m
Tue 9/296:00 am -
1 stop6h 43m
Deal found 9/8![United Airlines logo]()
$323
This Porter Airlines deal was found by Cheapflights users on 9/8. 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.
Fri 10/163:55 pm -
1 stop5h 55m
Mon 10/199:00 am -
2 stops6h 57m
Deal found 9/8![Porter Airlines logo]()
$305
This United deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/256:00 am -
1 stop5h 43m
Sun 9/2710:00 pm -
1 stop11h 50m
Deal found 9/6![Multiple Airlines logo]()
$380
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/201:15 pm -
Nonstop1h 30m
Sun 11/223:25 pm -
1 stop6h 07m
Deal found 9/6![Porter Airlines logo]()
$313
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Sat 9/195:00 pm -
1 stop6h 59m
Sat 9/268:50 am -
1 stop7h 31m
Deal found 9/9![United Airlines logo]()
$365
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:50 am -
1 stop4h 32m
Mon 10/57:25 pm -
1 stop14h 30m
Deal found 9/8![Air Canada logo]()
$461
This United deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1811:00 am -
1 stop5h 10m
Fri 9/188:00 pm -
Nonstop1h 26m
Deal found 9/6![Multiple Airlines logo]()
$425
This Porter Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/207:50 pm -
Nonstop1h 54m
Thu 11/2610:35 am -
1 stop6h 07m
Deal found 9/6![Porter Airlines logo]()
$323
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/310:50 am -
Nonstop1h 52m
Sat 10/108:55 pm -
Nonstop1h 45m
Deal found 9/5![United Airlines logo]()
$379
This United deal was found by Cheapflights users on 9/8. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:50 am -
Nonstop1h 25m
Mon 9/288:00 pm -
Nonstop1h 26m
Deal found 9/8![Multiple Airlines logo]()
$427
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:50 am -
2 stops9h 32m
Sun 10/47:25 pm -
1 stop14h 30m
Deal found 9/8![Air Canada logo]()
$470
This Porter Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/207:00 am -
Nonstop1h 47m
Mon 9/2811:55 am -
1 stop3h 55m
Deal found 9/6![Porter Airlines logo]()
$323
This United deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:50 pm -
Nonstop1h 29m
Sun 10/48:25 am -
Nonstop1h 25m
Deal found 9/5![Multiple Airlines logo]()
$433
Last-minute flights from Boston to OntarioDiscover last-minute flight deals from Boston to Ontario. Data last updated September 9, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Ontario. Data last updated September 9, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 9/222:20 pm -
1 stop4h 35m
Wed 9/3010:30 am -
1 stop5h 20m
Deal found 9/8![Porter Airlines logo]()
$205
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/252:20 pm -
1 stop4h 35m
Mon 10/56:00 pm -
Nonstop1h 39m
Deal found 9/4![Porter Airlines logo]()
$206
This Trip.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/274:30 pm -
Nonstop1h 45m
Sat 10/310:45 am -
1 stop3h 56m
Deal found 9/6![Multiple Airlines logo]()
$199
This deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:00 am -
Nonstop1h 47m
Wed 9/3011:55 am -
1 stop3h 55m
Deal found 9/4![Porter Airlines logo]()
$201
This Trip.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2710:05 am -
Nonstop1h 55m
Sat 10/35:30 pm -
1 stop3h 56m
Deal found 9/6![Multiple Airlines logo]()
$205
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:30 pm -
Nonstop1h 55m
Sun 10/47:25 am -
Nonstop1h 40m
Deal found 9/6![Porter Airlines logo]()
$200
This Trip.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/13:55 pm -
1 stop6h 09m
Sun 10/47:25 am -
Nonstop1h 40m
Deal found 9/6![Porter Airlines logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:30 pm -
Nonstop1h 55m
Thu 10/157:25 am -
Nonstop1h 40m
Deal found 9/6![Porter Airlines logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:05 am -
Nonstop1h 55m
Sat 10/177:25 am -
Nonstop1h 40m
Deal found 9/6![Porter Airlines logo]()
$199
This Trip.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:55 pm -
1 stop6h 09m
Fri 10/308:55 pm -
Nonstop1h 42m
Deal found 9/5![Multiple Airlines logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:30 pm -
Nonstop1h 55m
Wed 10/214:55 pm -
Nonstop1h 40m
Deal found 9/4![Porter Airlines logo]()
$201
This Mytrip deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/179:55 am -
Nonstop1h 47m
Sat 10/313:35 pm -
2 stops5h 53m
Deal found 9/5![Multiple Airlines logo]()
$198
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 September 9, 2026.
Search for one-way flight options from Boston to Ontario. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
This Air Canada deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/284:55 pm -
Nonstop1h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Air Canada logo]()
$93
This Air Canada deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/59:40 am -
Nonstop1h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Air Canada logo]()
$93
This Justfly.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/281:15 pm -
2 stops9h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Porter Airlines logo]()
$94
This SmartFares deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/410:05 am -
Nonstop1h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Air Transat logo]()
$95
This Trip.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 9/286:10 pm -
Nonstop1h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Porter Airlines logo]()
$95
This Trip.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 9/2810:40 am -
1 stop5h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Air Canada logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/133:55 pm -
Nonstop1h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Porter Airlines logo]()
$96
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/116:00 am -
Nonstop1h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Air Canada logo]()
$97
This Trip.com deal was found by Cheapflights users on 9/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:45 pm -
Nonstop1h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Air Canada logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/73:55 pm -
Nonstop1h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Porter Airlines logo]()
$97
This SmartFares deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:05 am -
Nonstop1h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Air Transat logo]()
$99
This SmartFares deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:25 pm -
Nonstop1h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Air Transat logo]()
$99
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 September 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $198 (Kiwi.com) |
One-way from | $93 (Air Canada) |
Popular in | November |
Cheapest in | July |
Average price | $286 |
Good round-trip deal | $238 or less |
Good one-way deal | $142 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 7,457,451 searches. Data last updated September 9, 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 Boston Logan Intl - YTZ Toronto Island
BOSYTZ
Boston Logan Intl
Mon 10/26
1:15 pm-6:28 pm
1 stop5h 13m
Toronto Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$95
BostonToronto
BOS Boston Logan Intl - YTZ Toronto Island
BOSYTZ
Boston Logan Intl
Sat 10/17
7:45 pm-9:41 pm
Nonstop1h 56m
Toronto Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$97
BostonOttawa
BOS Boston Logan Intl - YOW Ottawa
BOSYOW
Boston Logan Intl
Tue 10/13
3:55 pm-5:23 pm
Nonstop1h 28m
Ottawa
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$97
BostonOttawa
BOS Boston Logan Intl - YOW Ottawa
BOSYOW
Boston Logan Intl
Wed 10/7
3:55 pm-5:23 pm
Nonstop1h 28m
Ottawa
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$97
BostonToronto
BOS Boston Logan Intl - YYZ Toronto Pearson Intl
BOSYYZ
Boston Logan Intl
Sat 10/10
3:35 pm-11:12 pm
2 stops7h 37m
Toronto Pearson Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$100
BostonToronto
BOS Boston Logan Intl - YYZ Toronto Pearson Intl
BOSYYZ
Boston Logan Intl
Sun 10/4
6:50 pm-11:18 pm
1 stop4h 28m
Toronto Pearson Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$102
BostonToronto
BOS Boston Logan Intl - YTZ Toronto Island
BOSYTZ
Boston Logan Intl
Thu 10/29
3:35 pm-9:36 pm
1 stop6h 01m
Toronto Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$102
BostonOttawa
BOS Boston Logan Intl - YOW Ottawa
BOSYOW
Boston Logan Intl
Sun 10/4
3:55 pm-5:23 pm
Nonstop1h 28m
Ottawa
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$104
BostonToronto
BOS Boston Logan Intl - YYZ Toronto Pearson Intl
BOSYYZ
Boston Logan Intl
Mon 11/9
3:01 pm-9:15 pm
1 stop6h 14m
Toronto Pearson Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$106
BostonToronto
BOS Boston Logan Intl - YYZ Toronto Pearson Intl
BOSYYZ
Boston Logan Intl
Mon 11/9
1:15 pm-7:05 pm
1 stop5h 50m
Toronto Pearson Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$106
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-YOW
BOS-YXU
BOS-YUL
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-YOW
BOS-YXU
What is the cheapest month to book a flight from Boston to Region of Ontario?
Currently, July is the cheapest month in which you can book a flight from Boston to Region of Ontario (average of $293). Flying from Boston to Region of Ontario in April is currently the most expensive (average of $385). 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 September 9, 2026.
A simple way to save on the total cost of your ticket is to fly from Boston to Region of Ontario in the evening. If you’re flexible enough to do this you can expect to save up to 19% on your trip compared to booking a flight in the afternoon.
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 September 9, 2026.
The most flights from BOS to CAON are scheduled on a Tuesday (17 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (9 on average).
How much does it cost to fly round-trip from Boston to Region of Ontario?
Airfare is below average for this route at the moment.
Boston to Region of Ontario flights typically cost between $233 and $386 in October.The cheapest round-trip price found within the last 5 days was $198 on Porter Airlines (Oct 6-Oct 15).
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 Sunday mornings 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 September 9, 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.
Entertainment
6.9
Overall
8.0
Crew
8.6
Boarding
8.2
Comfort
8.0
Food
7.6
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Entertainment
6.9
Overall
8.0
Crew
8.6
Boarding
8.2
Comfort
8.0
Food
7.6
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Entertainment
6.9
Overall
8.0
Crew
8.6
Boarding
8.2
Comfort
8.0
Food
7.6
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Entertainment
6.9
Overall
8.0
Crew
8.6
Boarding
8.2
Comfort
8.0
Food
7.6
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Entertainment
6.9
Overall
8.0
Crew
8.6
Boarding
8.2
Comfort
8.0
Food
7.6
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Entertainment
6.9
Overall
8.0
Crew
8.6
Boarding
8.2
Comfort
8.0
Food
7.6
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
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.
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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 September 9, 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 7,457,451 searches. Data last updated September 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$100 | Average$369 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$102 | Average$381 | FlexibilityNo cancel fee | On-time50% | |
| Cheapest$120 | Average$332 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$128 | Average$214 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$288 | Average$603 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$316 | Average$452 | FlexibilityNo cancel fee | On-time71% |