$142+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOS
May 29 — Jun 51
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Massachusetts with Cheapflights
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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 April 29, 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 April 29, 2026.
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Tue 9/17:13 pm
ONT
- BOS
1 stop9h 48m
United Airlines
Wed 9/912:30 pm
BOS
- ONT
1 stop8h 49m
United Airlines
Deal found 4/29![United Airlines logo]()
$292
This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/612:59 pm
ONT
- BOS
1 stop7h 25m
American Airlines
Wed 9/96:45 am
BOS
- ONT
1 stop9h 42m
American Airlines
Deal found 4/28![American Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1010:59 pm
ONT
- BOS
1 stop9h 35m
Delta
Wed 8/191:55 pm
BOS
- ONT
1 stop11h 01m
Delta
Deal found 4/26![Delta logo]()
$298
This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1211:59 pm
ONT
- BOS
2 stops9h 23m
American Airlines
Wed 5/272:26 pm
BOS
- ONT
1 stop11h 10m
American Airlines
Deal found 4/28![American Airlines logo]()
$302
This American Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/57:12 pm
ONT
- BOS
2 stops10h 29m
American Airlines
Tue 6/911:20 am
BOS
- ONT
2 stops10h 02m
American Airlines
Deal found 4/24![American Airlines logo]()
$307
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:45 am
ONT
- ALB
2 stops13h 33m
Delta
Tue 6/21:00 pm
ALB
- ONT
2 stops13h 34m
Delta
Deal found 4/27![Delta logo]()
$307
This Alaska Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/611:15 am
ONT
- BOS
1 stop16h 05m
Alaska Airlines
Wed 6/107:44 pm
BOS
- ONT
1 stop18h 30m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/284:57 pm
ONT
- BOS
1 stop10h 23m
Delta
Mon 6/86:05 am
BOS
- ONT
1 stop9h 05m
Delta
Deal found 4/24![Delta logo]()
$318
This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/77:14 pm
ONT
- BOS
2 stops11h 06m
American Airlines
Thu 7/96:00 am
BOS
- ONT
1 stop10h 22m
American Airlines
Deal found 4/28![American Airlines logo]()
$323
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/284:57 pm
ONT
- BOS
1 stop10h 23m
Delta
Thu 6/45:35 am
BOS
- ONT
1 stop8h 22m
Delta
Deal found 4/28![Delta logo]()
$327
This American Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/910:59 am
ONT
- ORH
2 stops24h 15m
American Airlines
Wed 5/132:39 pm
ORH
- ONT
2 stops21h 00m
American Airlines
Deal found 4/24![American Airlines logo]()
$327
This American Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:35 pm
ONT
- BOS
1 stop7h 25m
American Airlines
Mon 5/115:54 pm
BOS
- ONT
1 stop8h 52m
American Airlines
Deal found 4/24![American Airlines logo]()
$328
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 April 29, 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 April 29, 2026.
This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2412:00 pm
ONT
- BOS
1 stop10h 06m
Delta
Tue 9/294:20 pm
BOS
- ONT
1 stop8h 36m
Delta
Deal found 4/25![Delta logo]()
$297
This American Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/910:59 am
ONT
- ORH
2 stops24h 15m
American Airlines
Wed 5/132:39 pm
ORH
- ONT
2 stops21h 00m
American Airlines
Deal found 4/24![American Airlines logo]()
$327
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2611:55 pm
ONT
- BDL
2 stops9h 15m
Southwest
Tue 6/95:55 am
BDL
- ONT
1 stop9h 10m
Southwest
Deal found 4/25![Southwest logo]()
$384
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:05 am
ONT
- BOS
1 stop8h 02m
United Airlines
Tue 10/2010:50 am
BOS
- ONT
2 stops13h 02m
United Airlines
Deal found 4/26![United Airlines logo]()
$412
This Alaska Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:57 pm
ONT
- BOS
1 stop9h 23m
Alaska Airlines
Fri 5/297:20 am
BOS
- ONT
1 stop10h 49m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$416
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/279:50 am
ONT
- ALB
2 stops11h 08m
Delta
Fri 5/296:00 am
ALB
- ONT
2 stops9h 19m
Delta
Deal found 4/28![Delta logo]()
$339
This American Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1111:59 pm
ONT
- ORH
2 stops18h 08m
American Airlines
Mon 9/147:33 pm
ORH
- ONT
2 stops19h 15m
American Airlines
Deal found 4/27![American Airlines logo]()
$343
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/165:59 pm
ONT
- BOS
1 stop10h 36m
Delta
Sun 7/125:30 am
BOS
- ONT
1 stop8h 08m
Delta
Deal found 4/26![Delta logo]()
$358
This Southwest deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:40 am
ONT
- ALB
1 stop9h 25m
Southwest
Sun 9/135:40 pm
ALB
- ONT
1 stop8h 55m
Southwest
Deal found 4/27![Southwest logo]()
$408
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/246:30 pm
ONT
- BOS
1 stop8h 28m
United Airlines
Wed 5/276:00 am
BOS
- ONT
1 stop9h 12m
United Airlines
Deal found 4/26![United Airlines logo]()
$440
This Alaska Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:12 pm
ONT
- BOS
1 stop8h 57m
Alaska Airlines
Wed 9/309:30 am
BOS
- ONT
1 stop10h 48m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$476
This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/227:12 pm
ONT
- ORH
2 stops18h 41m
American Airlines
Mon 5/255:18 pm
ORH
- ONT
2 stops32h 20m
American Airlines
Deal found 4/28![American Airlines logo]()
$437
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2810:00 pm
ONT
- BDL
1 stop9h 47m
Delta
Sat 6/65:30 am
BDL
- ONT
2 stops9h 49m
Delta
Deal found 4/26![Delta logo]()
$404
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:00 am
ONT
- BOS
2 stops11h 58m
United Airlines
Sun 9/206:00 am
BOS
- ONT
1 stop9h 12m
United Airlines
Deal found 4/25![United Airlines logo]()
$447
This Southwest deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/109:40 pm
ONT
- ALB
1 stop7h 45m
Southwest
Thu 6/185:55 pm
ALB
- ONT
1 stop7h 30m
Southwest
Deal found 4/28![Southwest logo]()
$468
This Alaska Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:12 pm
ONT
- BOS
1 stop8h 57m
Alaska Airlines
Wed 10/77:20 am
BOS
- ONT
1 stop10h 27m
Alaska Airlines
Deal found 4/25![Alaska Airlines logo]()
$477
This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/132:08 pm
ONT
- ORH
2 stops21h 06m
American Airlines
Sun 5/172:39 pm
ORH
- ONT
2 stops35h 01m
American Airlines
Deal found 4/28![American Airlines logo]()
$437
This United Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/186:59 pm
ONT
- BOS
1 stop10h 24m
United Airlines
Sat 5/231:37 pm
BOS
- ONT
1 stop11h 18m
United Airlines
Deal found 4/24![United Airlines logo]()
$459
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2110:59 pm
ONT
- BDL
1 stop8h 51m
Delta
Wed 9/26:00 am
BDL
- ONT
1 stop8h 04m
Delta
Deal found 4/28![Delta logo]()
$418
This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/149:24 am
ONT
- ORH
2 stops25h 50m
American Airlines
Sun 5/172:39 pm
ORH
- ONT
2 stops35h 01m
American Airlines
Deal found 4/28![American Airlines logo]()
$437
This Southwest deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/317:40 pm
ONT
- BOS
2 stops9h 25m
Southwest
Fri 6/57:55 am
BOS
- ONT
2 stops10h 10m
Southwest
Deal found 4/24![Southwest logo]()
$487
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:59 pm
ONT
- BDL
1 stop8h 51m
Delta
Wed 9/211:50 am
BDL
- ONT
1 stop9h 11m
Delta
Deal found 4/27![Delta logo]()
$418
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:30 pm
ONT
- BOS
1 stop8h 28m
United Airlines
Tue 6/166:00 am
BOS
- ONT
1 stop9h 12m
United Airlines
Deal found 4/27![United Airlines logo]()
$463
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/252:18 pm
ONT
- ORH
2 stops23h 35m
American Airlines
Sun 6/285:18 pm
ORH
- ONT
2 stops28h 03m
American Airlines
Deal found 4/29![American Airlines logo]()
$469
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/87:00 am
ONT
- BDL
2 stops13h 36m
Delta
Thu 9/241:00 pm
BDL
- ONT
2 stops11h 56m
Delta
Deal found 4/28![Delta logo]()
$429
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/221:50 pm
ONT
- BOS
1 stop8h 21m
United Airlines
Sat 5/231:37 pm
BOS
- ONT
1 stop11h 18m
United Airlines
Deal found 4/27![United Airlines logo]()
$488
This American Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/231:10 pm
ONT
- ORH
2 stops24h 41m
American Airlines
Sat 7/255:16 pm
ORH
- ONT
2 stops19h 13m
American Airlines
Deal found 4/26![American Airlines logo]()
$469
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2310:00 pm
ONT
- ORH
2 stops16h 00m
Delta
Mon 7/275:40 pm
ORH
- ONT
2 stops19h 58m
Delta
Deal found 4/26![Delta logo]()
$444
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:18 pm
ONT
- ALB
1 stop7h 12m
United Airlines
Wed 8/198:00 am
ALB
- ONT
1 stop7h 38m
United Airlines
Deal found 4/25![United Airlines logo]()
$497
This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/217:12 pm
ONT
- ORH
2 stops18h 41m
American Airlines
Mon 5/255:18 pm
ORH
- ONT
2 stops32h 20m
American Airlines
Deal found 4/28![American Airlines logo]()
$499
Last-minute flights from Ontario to MassachusettsDiscover last-minute flight deals from Ontario to Massachusetts. Data last updated April 29, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Massachusetts. Data last updated April 29, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:35 pm
ONT
- BOS
1 stop7h 25m
American Airlines
Mon 5/115:54 pm
BOS
- ONT
1 stop8h 52m
American Airlines
Deal found 4/24![American Airlines logo]()
$328
This American Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/910:59 am
ONT
- ORH
2 stops24h 15m
American Airlines
Wed 5/132:39 pm
ORH
- ONT
2 stops21h 00m
American Airlines
Deal found 4/24![American Airlines logo]()
$327
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:59 pm
ONT
- BOS
1 stop10h 24m
United Airlines
Wed 5/134:35 pm
BOS
- ONT
1 stop9h 00m
United Airlines
Deal found 4/26![United Airlines logo]()
$292
This American Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1111:29 pm
ONT
- BOS
1 stop10h 15m
American Airlines
Wed 5/1311:11 am
BOS
- ONT
2 stops10h 19m
American Airlines
Deal found 4/26![American Airlines logo]()
$333
This United Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/121:40 pm
ONT
- BOS
1 stop7h 19m
United Airlines
Wed 5/275:05 pm
BOS
- ONT
1 stop8h 46m
United Airlines
Deal found 4/24![United Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1211:59 pm
ONT
- BOS
2 stops9h 23m
American Airlines
Wed 5/272:26 pm
BOS
- ONT
1 stop11h 10m
American Airlines
Deal found 4/28![American Airlines logo]()
$302
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2712:07 pm
ONT
- ALB
1 stop8h 51m
Delta
Fri 5/296:00 am
ALB
- ONT
2 stops9h 19m
Delta
Deal found 4/28![Delta logo]()
$333
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:57 pm
ONT
- BOS
1 stop9h 23m
Alaska Airlines
Wed 6/37:20 am
BOS
- ONT
1 stop10h 49m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$334
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/289:50 am
ONT
- ALB
2 stops11h 08m
Delta
Tue 6/26:00 am
ALB
- ONT
2 stops14h 08m
Delta
Deal found 4/29![Delta logo]()
$307
This Delta deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/284:57 pm
ONT
- BOS
1 stop10h 23m
Delta
Mon 6/86:05 am
BOS
- ONT
1 stop9h 05m
Delta
Deal found 4/24![Delta logo]()
$318
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/284:57 pm
ONT
- BOS
1 stop10h 23m
Delta
Wed 6/36:10 am
BOS
- ONT
1 stop9h 09m
Delta
Deal found 4/28![Delta logo]()
$327
This CheapOair deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:15 am
ONT
- BOS
1 stop16h 05m
Alaska Airlines
Wed 6/37:11 pm
BOS
- ONT
1 stop18h 59m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$309
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 April 29, 2026.
Search for one-way flight options from Ontario to Massachusetts. Find affordable one-way fares based on user searches. Data last updated April 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/188:06 pm
ONT
- BOS
2 stops26h 18m
Frontier
Deal found 4/24![Frontier logo]()
$142
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:59 pm
ONT
- BOS
1 stop10h 24m
United Airlines
Deal found 4/27![United Airlines logo]()
$144
This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/77:14 pm
ONT
- BOS
1 stop7h 31m
American Airlines
Deal found 4/28![American Airlines logo]()
$149
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:00 am
ONT
- ALB
1 stop7h 30m
Delta
Deal found 4/27![Delta logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/96:43 pm
ONT
- BOS
2 stops27h 44m
Frontier
Deal found 4/27![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:00 am
ONT
- BOS
2 stops50h 06m
Frontier
Deal found 4/24![Frontier logo]()
$151
This Delta deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2610:00 pm
ONT
- ALB
2 stops12h 33m
Delta
Deal found 4/24![Delta logo]()
$154
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/25:57 pm
ONT
- BOS
1 stop9h 27m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/128:30 am
ONT
- BOS
2 stops13h 54m
Frontier
Deal found 4/25![Frontier logo]()
$158
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1210:39 am
ONT
- BOS
1 stop10h 20m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$159
This CheapOair deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/311:15 am
ONT
- BOS
1 stop16h 05m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/93:34 pm
ONT
- BOS
2 stops25h 26m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$162
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 April 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $292 (United Airlines) |
One-way from | $142 (Kiwi.com) |
Popular in | April |
Cheapest in | January |
Average price | $462 |
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 2,558,603 searches. Data last updated April 29, 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 - BOS
ONTBOS
Ontario
Thu 9/24
12:00 pm-1:06 am
1 stop10h 06m
Boston Logan Intl
Tue 9/29
4:20 pm-9:56 pm
1 stop8h 36m
$297
OntarioWorcester
ONT - ORH
ONTORH
Ontario
Sat 5/9
10:59 am-2:14 pm
2 stops24h 15m
Worcester
Wed 5/13
2:39 pm-8:39 am
2 stops21h 00m
$327
OntarioAlbany
ONT - ALB
ONTALB
Ontario
Wed 5/27
9:50 am-11:58 pm
2 stops11h 08m
Albany Intl
Fri 5/29
6:00 am-12:19 pm
2 stops9h 19m
$339
OntarioWorcester
ONT - ORH
ONTORH
Ontario
Fri 9/11
11:59 pm-9:07 pm
2 stops18h 08m
Worcester
Mon 9/14
7:33 pm-11:48 am
2 stops19h 15m
$343
OntarioBoston
ONT - BOS
ONTBOS
Ontario
Tue 6/16
5:59 pm-7:35 am
1 stop10h 36m
Boston Logan Intl
Sun 7/12
5:30 am-10:38 am
1 stop8h 08m
$358
OntarioHartford
ONT - BDL
ONTBDL
Ontario
Tue 5/26
11:55 pm-12:10 pm
2 stops9h 15m
Hartford Bradley Intl
Tue 6/9
5:55 am-12:05 pm
1 stop9h 10m
$384
OntarioHartford
ONT - BDL
ONTBDL
Ontario
Thu 5/28
10:00 pm-10:47 am
1 stop9h 47m
Hartford Bradley Intl
Sat 6/6
5:30 am-12:19 pm
2 stops9h 49m
$404
OntarioAlbany
ONT - ALB
ONTALB
Ontario
Wed 9/9
7:40 am-8:05 pm
1 stop9h 25m
Albany Intl
Sun 9/13
5:40 pm-11:35 pm
1 stop8h 55m
$408
OntarioBoston
ONT - BOS
ONTBOS
Ontario
Sat 10/10
6:05 am-5:07 pm
1 stop8h 02m
Boston Logan Intl
Tue 10/20
10:50 am-8:52 pm
2 stops13h 02m
$412
OntarioBoston
ONT - BOS
ONTBOS
Ontario
Wed 5/27
5:57 pm-6:20 am
1 stop9h 23m
Boston Logan Intl
Fri 5/29
7:20 am-3:09 pm
1 stop10h 49m
$416
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-ORH
ONT-BDL
ONT-ALB
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-ORH
ONT-BDL
ONT-ALB
How far ahead should I book a flight from Ontario to Massachusetts?
Booking 53 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.
What is the cheapest month to book a flight from Ontario to Massachusetts?
Currently, March is the cheapest month in which you can book a flight from Ontario to Massachusetts (average of $128). Flying from Ontario to Massachusetts in November is currently the most expensive (average of $266). 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?
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 April 29, 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.
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Related info for your journey
Find useful and relevant information for your journey from Ontario to Massachusetts. 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 Ontario to Massachusetts
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Massachusetts by adding a car rental and/or hotel reservation to your travel itinerary.
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 April 29, 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 2,558,603 searches. Data last updated April 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$155 | Average$319 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$158 | Average$337 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$242 | Average$413 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$292 | Average$400 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$294 | Average$441 | FlexibilityNo cancel fee | On-time63% |