$134+ Cheap flights from Ontario (ONT) to Massachusetts
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOS
Sep 24 — Oct 11
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Massachusetts 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 Ontario to MassachusettsExplore the most affordable flight options available from Ontario to Massachusetts. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 25, 2026.
Explore the most affordable flight options available from Ontario to Massachusetts. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 25, 2026.
This Delta deal was found by Cheapflights users on 8/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:15 pm -
1 stop10h 15m
Tue 10/206:05 am -
1 stop9h 31m
Deal found 8/25![Delta logo]()
$337
This United Airlines deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/281:29 pm -
1 stop7h 21m
Sat 10/316:00 am -
2 stops9h 33m
Deal found 8/23![United Airlines logo]()
$342
This Southwest deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/179:40 am -
2 stops10h 35m
Wed 10/211:05 pm -
2 stops10h 40m
Deal found 8/24![Southwest logo]()
$347
This Southwest deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/291:50 pm -
1 stop7h 20m
Tue 10/610:55 am -
2 stops12h 50m
Deal found 8/21![Southwest logo]()
$348
This Delta deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2311:15 pm -
1 stop7h 29m
Tue 10/276:50 pm -
1 stop8h 05m
Deal found 8/24![Delta logo]()
$352
This Southwest deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2211:55 pm -
1 stop7h 00m
Tue 9/295:25 am -
2 stops10h 45m
Deal found 8/21![Southwest logo]()
$357
This Delta deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:17 pm -
1 stop8h 40m
Tue 10/66:10 am -
1 stop7h 56m
Deal found 8/24![Delta logo]()
$357
This Southwest deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2810:25 am -
2 stops9h 15m
Sat 10/315:30 am -
2 stops10h 15m
Deal found 8/21![Southwest logo]()
$362
This Delta deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2810:00 pm -
1 stop9h 38m
Wed 9/306:00 am -
1 stop8h 09m
Deal found 8/23![Delta logo]()
$363
This Delta deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:04 pm -
1 stop7h 49m
Tue 9/296:05 am -
1 stop9h 09m
Deal found 8/20![Delta logo]()
$367
This Southwest deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:55 pm -
2 stops10h 15m
Wed 10/213:10 pm -
1 stop9h 30m
Deal found 8/22![Southwest logo]()
$368
This American Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:59 pm -
1 stop7h 25m
Fri 9/117:00 am -
1 stop8h 06m
Deal found 8/22![American Airlines logo]()
$368
Best flights from Ontario to MassachusettsDiscover carefully curated flight deals from Ontario to Massachusetts that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 25, 2026.
Discover carefully curated flight deals from Ontario to Massachusetts that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 25, 2026.
This Delta deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/311:08 pm -
1 stop8h 58m
Thu 12/105:20 am -
1 stop8h 48m
Deal found 8/24![Delta logo]()
$337
This Southwest deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:55 pm -
2 stops10h 15m
Wed 10/213:10 pm -
1 stop9h 30m
Deal found 8/22![Southwest logo]()
$368
This United Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 10/16:07 am -
1 stop8h 03m
Tue 10/612:45 pm -
2 stops10h 46m
Deal found 8/22![United Airlines logo]()
$383
This American Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:29 pm -
2 stops21h 20m
Mon 10/195:16 pm -
2 stops18h 54m
Deal found 8/22![American Airlines logo]()
$458
This Delta deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:12 pm -
1 stop10h 08m
Wed 12/96:00 am -
1 stop9h 17m
Deal found 8/24![Delta logo]()
$337
This Southwest deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:55 pm -
2 stops10h 20m
Thu 10/294:25 pm -
1 stop8h 50m
Deal found 8/21![Southwest logo]()
$377
This United Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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 9/67:00 am -
1 stop7h 42m
Tue 9/154:53 pm -
1 stop9h 06m
Deal found 8/20![United Airlines logo]()
$387
This Delta deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/411:08 pm -
1 stop8h 58m
Thu 12/105:20 am -
1 stop8h 48m
Deal found 8/24![Delta logo]()
$352
This Southwest deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/48:40 am -
2 stops10h 30m
Sun 11/85:00 am -
1 stop12h 05m
Deal found 8/20![Southwest logo]()
$378
This Delta deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 10/291:35 pm -
1 stop7h 24m
Sun 11/15:30 am -
1 stop8h 36m
Deal found 8/22![Delta logo]()
$352
This American Airlines deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/72:22 pm -
2 stops23h 45m
Tue 11/105:36 pm -
2 stops27h 34m
Deal found 8/24![American Airlines logo]()
$458
This Delta deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 1/2312:00 pm -
1 stop8h 45m
Tue 1/266:00 am -
1 stop8h 27m
Deal found 8/22![Delta logo]()
$363
This United Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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 11/106:00 am -
1 stop10h 10m
Wed 11/119:00 am -
1 stop12h 01m
Deal found 8/21![United Airlines logo]()
$447
This American Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:34 pm -
2 stops18h 15m
Mon 10/195:16 pm -
2 stops21h 58m
Deal found 8/22![American Airlines logo]()
$458
This Southwest deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1411:55 pm -
1 stop7h 00m
Mon 9/215:50 am -
2 stops11h 10m
Deal found 8/23![Southwest logo]()
$432
This Delta deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:04 pm -
1 stop7h 49m
Thu 9/1012:20 pm -
1 stop10h 45m
Deal found 8/23![Delta logo]()
$367
This American Airlines deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/74:51 pm -
2 stops21h 16m
Mon 11/95:36 pm -
2 stops21h 16m
Deal found 8/24![American Airlines logo]()
$458
This United Airlines deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/101:29 pm -
1 stop7h 01m
Wed 11/118:40 am -
2 stops14h 35m
Deal found 8/23![United Airlines logo]()
$472
This Southwest deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:50 pm -
2 stops10h 20m
Sun 11/157:55 am -
1 stop8h 10m
Deal found 8/20![Southwest logo]()
$445
This American Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/292:22 pm -
2 stops23h 27m
Sun 10/45:16 pm -
2 stops23h 14m
Deal found 8/22![American Airlines logo]()
$464
This United Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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 11/45:00 am -
1 stop7h 56m
Wed 11/113:20 pm -
1 stop8h 31m
Deal found 8/20![United Airlines logo]()
$473
This Southwest deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1011:55 pm -
1 stop9h 05m
Thu 9/171:40 pm -
2 stops10h 05m
Deal found 8/24![Southwest logo]()
$447
This Delta deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:17 pm -
1 stop10h 00m
Wed 9/165:30 am -
1 stop8h 35m
Deal found 8/24![Delta logo]()
$413
This KAYAK deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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.
Mon 10/2611:10 pm -
1 stop10h 25m
Wed 11/44:47 pm -
1 stop8h 25m
Deal found 8/22![American Airlines logo]()
$467
This United Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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 9/221:18 pm -
1 stop7h 25m
Tue 9/295:03 pm -
1 stop8h 46m
Deal found 8/21![United Airlines logo]()
$473
This Southwest deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2511:55 pm -
2 stops9h 25m
Tue 12/17:45 am -
1 stop13h 30m
Deal found 8/20![Southwest logo]()
$450
This Delta deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:17 am -
1 stop10h 26m
Thu 9/105:30 am -
1 stop8h 35m
Deal found 8/23![Delta logo]()
$423
This American Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1611:59 pm -
2 stops13h 50m
Mon 10/195:16 pm -
2 stops18h 54m
Deal found 8/22![American Airlines logo]()
$472
This United Airlines deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:00 am -
1 stop7h 53m
Tue 10/612:38 pm -
2 stops10h 53m
Deal found 8/23![United Airlines logo]()
$478
This American Airlines deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:22 pm -
2 stops23h 27m
Mon 9/145:16 pm -
2 stops21h 31m
Deal found 8/23![American Airlines logo]()
$472
Last-minute flights from Ontario to MassachusettsDiscover last-minute flight deals from Ontario to Massachusetts. Data last updated August 25, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Massachusetts. Data last updated August 25, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:59 pm -
1 stop7h 25m
Fri 9/117:00 am -
1 stop8h 06m
Deal found 8/22![American Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:55 am -
1 stop10h 15m
Tue 9/155:25 am -
2 stops10h 45m
Deal found 8/20![Southwest logo]()
$372
This Alaska Airlines deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:12 am -
1 stop19h 57m
Mon 9/147:59 pm -
1 stop18h 17m
Deal found 8/24![Alaska Airlines logo]()
$375
This Delta deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:00 pm -
1 stop10h 40m
Tue 9/156:45 pm -
1 stop8h 02m
Deal found 8/23![Delta logo]()
$352
This KAYAK deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:15 pm -
1 stop10h 15m
Tue 9/156:45 pm -
1 stop8h 02m
Deal found 8/24![Delta logo]()
$376
This United Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 9/226:00 am -
1 stop8h 29m
Tue 9/291:55 pm -
1 stop9h 36m
Deal found 8/22![United Airlines logo]()
$337
This Southwest deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2211:55 pm -
1 stop7h 00m
Tue 9/295:25 am -
2 stops10h 45m
Deal found 8/21![Southwest logo]()
$357
This Delta deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:17 pm -
1 stop10h 00m
Tue 9/297:55 am -
1 stop12h 24m
Deal found 8/20![Delta logo]()
$367
This Delta deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2312:19 pm -
1 stop8h 38m
Wed 9/306:15 am -
1 stop7h 54m
Deal found 8/23![Delta logo]()
$357
This Delta deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2810:00 pm -
1 stop9h 38m
Wed 9/306:00 am -
1 stop8h 09m
Deal found 8/23![Delta logo]()
$363
This Delta deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2810:00 pm -
1 stop9h 38m
Fri 10/25:21 pm -
1 stop8h 03m
Deal found 8/24![Delta logo]()
$377
This Southwest deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/291:50 pm -
1 stop7h 20m
Tue 10/610:55 am -
2 stops12h 50m
Deal found 8/21![Southwest logo]()
$348
One-way flights from Ontario to MassachusettsSearch for one-way flight options from Ontario to Massachusetts. Find affordable one-way fares based on user searches. Data last updated August 25, 2026.
Search for one-way flight options from Ontario to Massachusetts. Find affordable one-way fares based on user searches. Data last updated August 25, 2026.
This Trip.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:45 am -
2 stops19h 37m
Deal found 8/24![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:15 am -
2 stops14h 29m
Deal found 8/24![Multiple Airlines logo]()
$162
This Delta deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2211:56 am -
1 stop9h 02m
Deal found 8/24![Delta logo]()
$169
This Southwest deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:40 am -
2 stops10h 30m
Deal found 8/21![Southwest logo]()
$174
This United Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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 9/137:13 pm -
1 stop10h 01m
Deal found 8/21![United Airlines logo]()
$179
This Southwest deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2811:55 pm -
1 stop8h 40m
Deal found 8/24![Southwest logo]()
$179
This American Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/274:29 pm -
2 stops21h 20m
Deal found 8/21![American Airlines logo]()
$180
This Southwest deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2111:55 pm -
1 stop8h 15m
Deal found 8/23![Southwest logo]()
$182
This KAYAK deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1711:54 am -
1 stop9h 35m
Deal found 8/24![Delta logo]()
$182
This Delta deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1410:00 pm -
1 stop9h 38m
Deal found 8/24![Delta logo]()
$183
This Delta deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2711:54 am -
1 stop9h 35m
Deal found 8/24![Delta logo]()
$184
This Delta deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2810:00 pm -
2 stops10h 49m
Deal found 8/24![Delta logo]()
$184
Find flight deals from Ontario to Massachusetts
Keep the following information in mind while searching for Ontario to Massachusetts flight deals. Data was last updated August 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $337 (Delta) |
One-way from | $134 (Trip.com) |
Popular in | June |
Cheapest in | January |
Average price | $422 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Massachusetts 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 August 25, 2026.
Use the filters below to find and compare flights from Ontario to Massachusetts that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioBoston
ONT Ontario - BOS Boston Logan Intl
ONTBOS
Ontario
Thu 12/3
11:08 pm-11:06 am
1 stop8h 58m
Boston Logan Intl
Thu 12/10
5:20 am-11:08 am
1 stop8h 48m
$337
OntarioBoston
ONT Ontario - BOS Boston Logan Intl
ONTBOS
Ontario
Tue 12/1
5:12 pm-6:20 am
1 stop10h 08m
Boston Logan Intl
Wed 12/9
6:00 am-12:17 pm
1 stop9h 17m
$337
OntarioBoston
ONT Ontario - BOS Boston Logan Intl
ONTBOS
Ontario
Fri 12/4
11:08 pm-11:06 am
1 stop8h 58m
Boston Logan Intl
Thu 12/10
5:20 am-11:08 am
1 stop8h 48m
$352
Quickest round-trip
OntarioBoston
ONT Ontario - BOS Boston Logan Intl
ONTBOS
Ontario
Thu 10/29
1:35 pm-11:59 pm
1 stop7h 24m
Boston Logan Intl
Sun 11/1
5:30 am-11:06 am
1 stop8h 36m
$352
OntarioHartford
ONT Ontario - BDL Hartford Bradley Intl
ONTBDL
Ontario
Sat 1/23
12:00 pm-11:45 pm
1 stop8h 45m
Hartford Bradley Intl
Tue 1/26
6:00 am-11:27 am
1 stop8h 27m
$363
OntarioBoston
ONT Ontario - BOS Boston Logan Intl
ONTBOS
Ontario
Wed 9/9
1:04 pm-11:53 pm
1 stop7h 49m
Boston Logan Intl
Thu 9/10
12:20 pm-8:05 pm
1 stop10h 45m
$367
OntarioHartford
ONT Ontario - BDL Hartford Bradley Intl
ONTBDL
Ontario
Thu 10/15
6:55 pm-8:10 am
2 stops10h 15m
Hartford Bradley Intl
Wed 10/21
3:10 pm-9:40 pm
1 stop9h 30m
$368
OntarioAlbany
ONT Ontario - ALB Albany Intl
ONTALB
Ontario
Thu 10/22
6:55 pm-8:15 am
2 stops10h 20m
Albany Intl
Thu 10/29
4:25 pm-10:15 pm
1 stop8h 50m
$377
OntarioBoston
ONT Ontario - BOS Boston Logan Intl
ONTBOS
Ontario
Wed 11/4
8:40 am-10:10 pm
2 stops10h 30m
Boston Logan Intl
Sun 11/8
5:00 am-2:05 pm
1 stop12h 05m
$378
OntarioBoston
ONT Ontario - BOS Boston Logan Intl
ONTBOS
Ontario
Thu 10/1
6:07 am-5:10 pm
1 stop8h 03m
Boston Logan Intl
Tue 10/6
12:45 pm-8:31 pm
2 stops10h 46m
$383
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Massachusetts
Have a flexible travel schedule? Discover the best time to fly to Massachusetts from Ontario with our price prediction graph.
ONT-BOS
ONT-ALB
ONT-BDL
ONT-ORH
ONT-PVC
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 Massachusetts
ONT-USMA
ONT-BOS
ONT-ALB
ONT-BDL
ONT-ORH
What is the cheapest month to book a flight from Ontario to Massachusetts?
Currently, February is the cheapest month in which you can book a flight from Ontario to Massachusetts (average of $338). Flying from Ontario to Massachusetts in July is currently the most expensive (average of $520). 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.
How much does it cost to fly round-trip from Ontario to Massachusetts?
Airfare is typical for this route at the moment.
Ontario to Massachusetts flights typically cost between $327 and $498 in October.The cheapest round-trip price found within the last 5 days was $337 on Delta (Oct 3-Oct 21).
How far ahead should I book a flight from Ontario to Massachusetts?
Booking 89 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Massachusetts. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Massachusetts
Get insights into the airlines that provide service to Massachusetts. 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 Massachusetts. Reviews last updated August 25, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Ontario to Massachusetts by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
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Alternative routes for Ontario to Massachusetts
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Complete your trip
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Search flights from Ontario to Massachusetts by cabin class
Find flights from Ontario to Massachusetts, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Massachusetts flights
Browse other Ontario and Massachusetts flight options. Last updated on August 25, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Massachusetts flights
Consider these flights traveling from Ontario to Massachusetts.
Top 5 airlines flying from Ontario to Massachusetts
Discover the top 5 airlines that operate flights from Ontario to Massachusetts. 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 August 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$189 | Average$417 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$223 | Average$358 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$238 | Average$404 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$294 | Average$454 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$296 | Average$417 | FlexibilityNo cancel fee | On-time71% |