$149+ 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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BOS
Jun 24 — Jul 11
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Massachusetts
Cheapest
Best
Last-minute
One-way
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 May 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 May 25, 2026.
This Delta deal was found by Cheapflights users on 5/20. 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.
Thu 5/281:29 pm
ONT
- BOS
1 stop7h 29m
Delta
Wed 8/125:30 am
BOS
- ONT
1 stop8h 12m
Delta
Deal found 5/20![Delta logo]()
$297
This American Airlines deal was found by Cheapflights users on 5/22. 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 5/297:12 pm
ONT
- BOS
2 stops10h 29m
American Airlines
Sat 6/67:00 am
BOS
- ONT
1 stop9h 28m
American Airlines
Deal found 5/22![American Airlines logo]()
$302
This Southwest deal was found by Cheapflights users on 5/21. 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 9/21:50 pm
ONT
- BOS
1 stop7h 15m
Southwest
Mon 9/145:40 am
BOS
- ONT
1 stop7h 40m
Southwest
Deal found 5/21![Southwest logo]()
$312
This Southwest deal was found by Cheapflights users on 5/23. 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 7/272:30 pm
ONT
- BOS
1 stop7h 35m
Southwest
Wed 8/55:25 am
BOS
- ONT
2 stops10h 15m
Southwest
Deal found 5/23![Southwest logo]()
$317
This Delta deal was found by Cheapflights users on 5/25. 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 8/2912:00 pm
ONT
- BOS
1 stop10h 25m
Delta
Thu 9/176:05 am
BOS
- ONT
1 stop9h 05m
Delta
Deal found 5/25![Delta logo]()
$318
This Southwest deal was found by Cheapflights users on 5/23. 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.
Wed 8/1910:55 am
ONT
- BOS
1 stop10h 10m
Southwest
Wed 8/263:20 pm
BOS
- ONT
2 stops9h 40m
Southwest
Deal found 5/23![Southwest logo]()
$323
This Southwest deal was found by Cheapflights users on 5/24. 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.
Tue 7/1411:55 pm
ONT
- BOS
1 stop9h 20m
Southwest
Tue 7/215:25 am
BOS
- ONT
1 stop9h 40m
Southwest
Deal found 5/24![Southwest logo]()
$327
This American Airlines deal was found by Cheapflights users on 5/23. 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.
Sat 6/610:00 pm
ONT
- BOS
1 stop8h 21m
American Airlines
Wed 6/106:20 am
BOS
- ONT
1 stop8h 44m
American Airlines
Deal found 5/23![American Airlines logo]()
$328
This American Airlines deal was found by Cheapflights users on 5/22. 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 5/297:12 pm
ONT
- BOS
1 stop7h 58m
American Airlines
Fri 6/55:05 pm
BOS
- ONT
1 stop7h 52m
American Airlines
Deal found 5/22![American Airlines logo]()
$331
This American Airlines deal was found by Cheapflights users on 5/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:06 am
ONT
- BOS
1 stop9h 36m
American Airlines
Tue 8/1811:04 am
BOS
- ONT
2 stops10h 11m
American Airlines
Deal found 5/25![American Airlines logo]()
$333
This CheapOair deal was found by Cheapflights users on 5/24. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:05 pm
ONT
- BOS
1 stop9h 04m
Alaska Airlines
Fri 9/117:59 pm
BOS
- ONT
1 stop18h 17m
Alaska Airlines
Deal found 5/24![Alaska Airlines logo]()
$334
This American Airlines deal was found by Cheapflights users on 5/24. 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 9/411:59 pm
ONT
- ORH
2 stops13h 59m
American Airlines
Sun 9/65:23 pm
ORH
- ONT
2 stops21h 20m
American Airlines
Deal found 5/24![American Airlines logo]()
$352
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 May 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 May 25, 2026.
This Delta deal was found by Cheapflights users on 5/22. 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 11/55:05 pm
ONT
- BOS
1 stop10h 06m
Delta
Wed 11/117:05 am
BOS
- ONT
1 stop13h 12m
Delta
Deal found 5/22![Delta logo]()
$297
This American Airlines deal was found by Cheapflights users on 5/24. 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 9/411:59 pm
ONT
- ORH
2 stops13h 59m
American Airlines
Sun 9/65:23 pm
ORH
- ONT
2 stops21h 20m
American Airlines
Deal found 5/24![American Airlines logo]()
$352
This Southwest deal was found by Cheapflights users on 5/21. 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.
Mon 10/198:35 am
ONT
- BOS
1 stop9h 30m
Southwest
Mon 10/265:00 am
BOS
- ONT
1 stop7h 50m
Southwest
Deal found 5/21![Southwest logo]()
$383
This United Airlines deal was found by Cheapflights users on 5/21. 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.
Fri 9/187:13 pm
ONT
- BOS
1 stop10h 01m
United Airlines
Sun 9/206:00 am
BOS
- ONT
1 stop9h 12m
United Airlines
Deal found 5/21![United Airlines logo]()
$402
This Alaska Airlines deal was found by Cheapflights users on 5/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:14 pm
ONT
- BOS
1 stop8h 55m
Alaska Airlines
Thu 10/89:00 am
BOS
- ONT
1 stop12h 00m
Alaska Airlines
Deal found 5/23![Alaska Airlines logo]()
$537
This JetBlue deal was found by Cheapflights users on 5/21. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2311:58 pm
ONT
- BOS
1 stop11h 24m
JetBlue
Fri 7/175:09 pm
BOS
- ONT
1 stop8h 27m
JetBlue
Deal found 5/21![JetBlue logo]()
$538
This Southwest deal was found by Cheapflights users on 5/25. 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.
Sat 10/1011:55 pm
ONT
- BOS
1 stop9h 00m
Southwest
Mon 10/193:50 pm
BOS
- ONT
2 stops9h 45m
Southwest
Deal found 5/25![Southwest logo]()
$396
This Delta deal was found by Cheapflights users on 5/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:32 pm
ONT
- ALB
1 stop8h 25m
Delta
Fri 8/216:08 am
ALB
- ONT
1 stop7h 34m
Delta
Deal found 5/21![Delta logo]()
$396
This United Airlines deal was found by Cheapflights users on 5/24. 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.
Wed 11/117:00 am
ONT
- BOS
2 stops13h 54m
United Airlines
Sat 11/143:20 pm
BOS
- ONT
1 stop9h 01m
United Airlines
Deal found 5/24![United Airlines logo]()
$412
This Delta deal was found by Cheapflights users on 5/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:32 pm
ONT
- ALB
1 stop8h 25m
Delta
Thu 8/2012:48 pm
ALB
- ONT
1 stop8h 41m
Delta
Deal found 5/21![Delta logo]()
$396
This Southwest deal was found by Cheapflights users on 5/25. 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.
Mon 7/1311:55 pm
ONT
- BDL
1 stop8h 05m
Southwest
Wed 7/225:50 am
BDL
- ONT
1 stop9h 15m
Southwest
Deal found 5/25![Southwest logo]()
$426
This Delta deal was found by Cheapflights users on 5/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:32 pm
ONT
- ALB
1 stop8h 25m
Delta
Sat 8/226:08 am
ALB
- ONT
1 stop7h 34m
Delta
Deal found 5/21![Delta logo]()
$396
This Southwest deal was found by Cheapflights users on 5/22. 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.
Fri 7/1712:40 pm
ONT
- BDL
2 stops8h 40m
Southwest
Wed 7/225:50 am
BDL
- ONT
1 stop9h 15m
Southwest
Deal found 5/22![Southwest logo]()
$431
This American Airlines deal was found by Cheapflights users on 5/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/410:00 pm
ONT
- BDL
1 stop8h 26m
American Airlines
Wed 6/105:23 pm
BDL
- ONT
1 stop8h 13m
American Airlines
Deal found 5/20![American Airlines logo]()
$523
This Delta deal was found by Cheapflights users on 5/22. 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.
Sun 8/910:00 pm
ONT
- ALB
1 stop10h 37m
Delta
Fri 8/216:08 am
ALB
- ONT
1 stop7h 34m
Delta
Deal found 5/22![Delta logo]()
$397
This United Airlines deal was found by Cheapflights users on 5/22. 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 6/46:30 pm
ONT
- BOS
1 stop8h 28m
United Airlines
Sun 6/76:00 am
BOS
- ONT
1 stop9h 12m
United Airlines
Deal found 5/22![United Airlines logo]()
$488
This Southwest deal was found by Cheapflights users on 5/24. 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 7/2312:40 pm
ONT
- BDL
2 stops8h 40m
Southwest
Tue 7/285:50 am
BDL
- ONT
1 stop9h 15m
Southwest
Deal found 5/24![Southwest logo]()
$431
This Delta deal was found by Cheapflights users on 5/24. 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 8/2012:00 pm
ONT
- BDL
1 stop8h 58m
Delta
Wed 9/26:00 am
BDL
- ONT
1 stop7h 42m
Delta
Deal found 5/24![Delta logo]()
$408
This United Airlines deal was found by Cheapflights users on 5/23. 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.
Fri 9/47:13 pm
ONT
- BOS
2 stops11h 23m
United Airlines
Wed 9/99:30 am
BOS
- ONT
2 stops13h 31m
United Airlines
Deal found 5/23![United Airlines logo]()
$498
This United Airlines deal was found by Cheapflights users on 5/22. 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 8/111:18 pm
ONT
- ALB
1 stop7h 17m
United Airlines
Sat 8/228:00 am
ALB
- ONT
1 stop7h 50m
United Airlines
Deal found 5/22![United Airlines logo]()
$502
This Delta deal was found by Cheapflights users on 5/22. 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.
Fri 8/1411:56 am
ONT
- ALB
1 stop9h 01m
Delta
Tue 8/186:08 am
ALB
- ONT
1 stop7h 34m
Delta
Deal found 5/22![Delta logo]()
$418
This Southwest deal was found by Cheapflights users on 5/22. 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.
Fri 7/39:40 pm
ONT
- ALB
2 stops10h 05m
Southwest
Mon 7/135:55 pm
ALB
- ONT
1 stop7h 30m
Southwest
Deal found 5/22![Southwest logo]()
$462
This United Airlines deal was found by Cheapflights users on 5/22. 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 8/111:18 pm
ONT
- ALB
1 stop7h 17m
United Airlines
Fri 8/214:15 pm
ALB
- ONT
1 stop9h 20m
United Airlines
Deal found 5/22![United Airlines logo]()
$502
This Southwest deal was found by Cheapflights users on 5/21. 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 7/911:55 pm
ONT
- BDL
2 stops11h 15m
Southwest
Mon 7/1312:40 pm
BDL
- ONT
2 stops10h 30m
Southwest
Deal found 5/21![Southwest logo]()
$467
This Delta deal was found by Cheapflights users on 5/25. 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.
Fri 8/2112:00 pm
ONT
- BDL
1 stop8h 58m
Delta
Wed 9/26:00 am
BDL
- ONT
1 stop7h 42m
Delta
Deal found 5/25![Delta logo]()
$426
This Delta deal was found by Cheapflights users on 5/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/810:00 pm
ONT
- BOS
1 stop8h 45m
Delta
Tue 6/165:30 am
BOS
- ONT
1 stop8h 10m
Delta
Deal found 5/21![Delta logo]()
$429
This United Airlines deal was found by Cheapflights users on 5/23. 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.
Fri 6/196:05 am
ONT
- BOS
1 stop8h 24m
United Airlines
Sun 6/216:00 am
BOS
- ONT
1 stop9h 12m
United Airlines
Deal found 5/23![United Airlines logo]()
$532
This American Airlines deal was found by Cheapflights users on 5/24. 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.
Sun 6/2111:59 pm
ONT
- ORH
2 stops13h 54m
American Airlines
Sun 6/285:18 pm
ORH
- ONT
3 stops19h 13m
American Airlines
Deal found 5/24![American Airlines logo]()
$919
This United Airlines deal was found by Cheapflights users on 5/23. 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 8/187:00 am
ONT
- ALB
1 stop11h 36m
United Airlines
Wed 8/198:00 am
ALB
- ONT
1 stop7h 50m
United Airlines
Deal found 5/23![United Airlines logo]()
$606
This Delta deal was found by Cheapflights users on 5/22. 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.
Sun 8/910:00 pm
ONT
- ALB
1 stop10h 37m
Delta
Sun 8/166:08 am
ALB
- ONT
1 stop7h 34m
Delta
Deal found 5/22![Delta logo]()
$538
Last-minute flights from Ontario to MassachusettsDiscover last-minute flight deals from Ontario to Massachusetts. Data last updated May 25, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Massachusetts. Data last updated May 25, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 5/20. 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.
Thu 5/281:29 pm
ONT
- BOS
1 stop7h 29m
Delta
Wed 8/125:30 am
BOS
- ONT
1 stop8h 12m
Delta
Deal found 5/20![Delta logo]()
$297
This American Airlines deal was found by Cheapflights users on 5/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:12 pm
ONT
- BOS
2 stops10h 29m
American Airlines
Sat 6/66:00 am
BOS
- ONT
1 stop10h 28m
American Airlines
Deal found 5/20![American Airlines logo]()
$335
This American Airlines deal was found by Cheapflights users on 5/22. 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 5/297:12 pm
ONT
- BOS
2 stops10h 29m
American Airlines
Sat 6/67:00 am
BOS
- ONT
1 stop9h 28m
American Airlines
Deal found 5/22![American Airlines logo]()
$302
This American Airlines deal was found by Cheapflights users on 5/22. 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 5/297:12 pm
ONT
- BOS
1 stop7h 58m
American Airlines
Fri 6/55:05 pm
BOS
- ONT
1 stop7h 52m
American Airlines
Deal found 5/22![American Airlines logo]()
$331
This Delta deal was found by Cheapflights users on 5/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/294:57 pm
ONT
- BOS
1 stop10h 23m
Delta
Sun 6/76:05 am
BOS
- ONT
1 stop9h 05m
Delta
Deal found 5/21![Delta logo]()
$338
This American Airlines deal was found by Cheapflights users on 5/22. 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 6/47:13 pm
ONT
- BOS
2 stops10h 28m
American Airlines
Mon 6/82:27 pm
BOS
- ONT
1 stop11h 12m
American Airlines
Deal found 5/22![American Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 5/22. 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.
Fri 6/51:29 pm
ONT
- BOS
1 stop7h 29m
Delta
Sat 6/610:40 am
BOS
- ONT
1 stop8h 37m
Delta
Deal found 5/22![Delta logo]()
$318
This Delta deal was found by Cheapflights users on 5/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/51:29 pm
ONT
- BOS
1 stop7h 29m
Delta
Sat 7/412:30 pm
BOS
- ONT
1 stop9h 00m
Delta
Deal found 5/21![Delta logo]()
$339
This American Airlines deal was found by Cheapflights users on 5/23. 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.
Sat 6/610:00 pm
ONT
- BOS
1 stop8h 21m
American Airlines
Wed 6/106:20 am
BOS
- ONT
1 stop8h 44m
American Airlines
Deal found 5/23![American Airlines logo]()
$328
This Delta deal was found by Cheapflights users on 5/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/1510:00 pm
ONT
- ALB
1 stop10h 35m
Delta
Wed 7/812:30 pm
ALB
- ONT
1 stop8h 53m
Delta
Deal found 5/21![Delta logo]()
$427
This American Airlines deal was found by Cheapflights users on 5/24. 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.
Wed 6/171:11 pm
ONT
- BOS
1 stop7h 03m
American Airlines
Sat 6/206:20 am
BOS
- ONT
1 stop8h 44m
American Airlines
Deal found 5/24![American Airlines logo]()
$352
This American Airlines deal was found by Cheapflights users on 5/24. 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.
Sun 6/217:13 pm
ONT
- ORH
2 stops18h 40m
American Airlines
Sun 6/285:18 pm
ORH
- ONT
2 stops21h 46m
American Airlines
Deal found 5/24![American Airlines logo]()
$472
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 May 25, 2026.
Search for one-way flight options from Ontario to Massachusetts. Find affordable one-way fares based on user searches. Data last updated May 25, 2026.
This American Airlines deal was found by Cheapflights users on 5/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/77:15 pm
ONT
- BOS
1 stop7h 30m
American Airlines
Deal found 5/25![American Airlines logo]()
$149
This Delta deal was found by Cheapflights users on 5/23. 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 9/1410:00 pm
ONT
- ORH
2 stops14h 37m
Delta
Deal found 5/23![Delta logo]()
$164
This Delta deal was found by Cheapflights users on 5/25. 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 8/2912:00 pm
ONT
- BOS
1 stop10h 25m
Delta
Deal found 5/25![Delta logo]()
$170
This American Airlines deal was found by Cheapflights users on 5/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/177:15 pm
ONT
- BOS
2 stops10h 28m
American Airlines
Deal found 5/25![American Airlines logo]()
$175
This Alaska Airlines deal was found by Cheapflights users on 5/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/85:54 pm
ONT
- BOS
1 stop10h 46m
Alaska Airlines
Deal found 5/21![Alaska Airlines logo]()
$180
This United Airlines deal was found by Cheapflights users on 5/22. 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.
Wed 7/86:39 pm
ONT
- BOS
1 stop10h 22m
United Airlines
Deal found 5/22![United Airlines logo]()
$184
This American Airlines deal was found by Cheapflights users on 5/21. 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.
Thu 6/47:13 pm
ONT
- BOS
2 stops10h 28m
American Airlines
Deal found 5/21![American Airlines logo]()
$185
This United Airlines deal was found by Cheapflights users on 5/24. 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.
Fri 6/196:05 am
ONT
- BOS
2 stops10h 23m
United Airlines
Deal found 5/24![United Airlines logo]()
$189
This Delta deal was found by Cheapflights users on 5/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2810:00 pm
ONT
- BOS
1 stop8h 39m
Delta
Deal found 5/21![Delta logo]()
$190
This Southwest deal was found by Cheapflights users on 5/22. 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.
Wed 8/1211:55 pm
ONT
- ALB
1 stop8h 15m
Southwest
Deal found 5/22![Southwest logo]()
$194
This American Airlines deal was found by Cheapflights users on 5/24. 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.
Tue 8/2511:59 pm
ONT
- BDL
1 stop8h 47m
American Airlines
Deal found 5/24![American Airlines logo]()
$198
This United Airlines deal was found by Cheapflights users on 5/22. 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.
Fri 8/287:13 pm
ONT
- BOS
1 stop10h 01m
United Airlines
Deal found 5/22![United Airlines logo]()
$199
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 May 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $297 (American Airlines) |
One-way from | $149 (Delta) |
Popular in | July |
Cheapest in | January |
Average price | $413 |
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 May 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 - BOS
ONTBOS
Ontario
Thu 11/5
5:05 pm-6:11 am
1 stop10h 06m
Boston Logan Intl
Wed 11/11
7:05 am-5:17 pm
1 stop13h 12m
$297
OntarioWorcester
ONT - ORH
ONTORH
Ontario
Fri 9/4
11:59 pm-4:58 pm
2 stops13h 59m
Worcester
Sun 9/6
5:23 pm-11:43 am
2 stops21h 20m
$352
OntarioBoston
ONT - BOS
ONTBOS
Ontario
Mon 10/19
8:35 am-9:05 pm
1 stop9h 30m
Boston Logan Intl
Mon 10/26
5:00 am-9:50 am
1 stop7h 50m
$383
OntarioBoston
ONT - BOS
ONTBOS
Ontario
Sat 10/10
11:55 pm-11:55 am
1 stop9h 00m
Boston Logan Intl
Mon 10/19
3:50 pm-10:35 pm
2 stops9h 45m
$396
OntarioAlbany
ONT - ALB
ONTALB
Ontario
Wed 8/19
12:32 pm-11:57 pm
1 stop8h 25m
Albany Intl
Fri 8/21
6:08 am-10:42 am
1 stop7h 34m
$396
OntarioAlbany
ONT - ALB
ONTALB
Ontario
Wed 8/19
12:32 pm-11:57 pm
1 stop8h 25m
Albany Intl
Thu 8/20
12:48 pm-6:29 pm
1 stop8h 41m
$396
OntarioAlbany
ONT - ALB
ONTALB
Ontario
Wed 8/19
12:32 pm-11:57 pm
1 stop8h 25m
Albany Intl
Sat 8/22
6:08 am-10:42 am
1 stop7h 34m
$396
OntarioAlbany
ONT - ALB
ONTALB
Ontario
Sun 8/9
10:00 pm-11:37 am
1 stop10h 37m
Albany Intl
Fri 8/21
6:08 am-10:42 am
1 stop7h 34m
$397
OntarioBoston
ONT - BOS
ONTBOS
Ontario
Fri 9/18
7:13 pm-8:14 am
1 stop10h 01m
Boston Logan Intl
Sun 9/20
6:00 am-12:12 pm
1 stop9h 12m
$402
OntarioHartford
ONT - BDL
ONTBDL
Ontario
Thu 8/20
12:00 pm-11:58 pm
1 stop8h 58m
Hartford Bradley Intl
Wed 9/2
6:00 am-10:42 am
1 stop7h 42m
$408
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-ALB
ONT-BDL
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-ALB
ONT-BDL
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?
How far ahead should I book a flight from Ontario to Massachusetts?
Booking 60 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 May 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
Entertainment
7.5
Overall
7.9
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
7.9
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
7.9
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
7.9
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
7.9
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
7.9
Boarding
8.1
Comfort
8.0
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
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 May 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 2,558,603 searches. Data last updated May 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$158 | Average$317 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$209 | Average$333 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$238 | Average$420 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$294 | Average$420 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$296 | Average$395 | FlexibilityNo cancel fee | On-time71% |