$123+ Cheap flights from Boston to Ontario (BOS - ONT)
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 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — ONT
červenec 15 — červenec 221
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Ontario with Cheapflights
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Cheapest flights from Boston to OntarioExplore the most affordable flight options available from Boston to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on červen 15, 2026.
Explore the most affordable flight options available from Boston to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on červen 15, 2026.
This Alaska Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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.
ne 9/139:33 am
BOS
- ONT
1 stop10h 45m
Alaska Airlines
pá 9/186:14 pm
ONT
- BOS
1 stop8h 55m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$377
This Southwest deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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.
čt 8/271:30 pm
BOS
- ONT
1 stop8h 50m
Southwest
ne 8/3011:55 pm
ONT
- BOS
2 stops9h 35m
Southwest
Deal found 6/12![Southwest logo]()
$378
This Priceline deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
út 9/227:12 am
BOS
- ONT
1 stop10h 04m
Multiple Airlines
ne 9/279:10 pm
ONT
- BOS
1 stop7h 47m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$379
This Southwest deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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.
čt 10/223:50 pm
BOS
- ONT
2 stops9h 45m
Southwest
ne 10/2511:55 pm
ONT
- BOS
1 stop9h 20m
Southwest
Deal found 6/13![Southwest logo]()
$382
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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.
so 9/125:45 am
BOS
- ONT
1 stop8h 19m
Delta
po 9/215:13 pm
ONT
- BOS
1 stop10h 17m
Delta
Deal found 6/12![Delta logo]()
$383
This Southwest deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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.
út 8/255:25 am
BOS
- ONT
2 stops10h 15m
Southwest
ne 8/308:30 am
ONT
- BOS
1 stop12h 10m
Southwest
Deal found 6/13![Southwest logo]()
$384
This Booking.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
st 9/97:59 pm
BOS
- ONT
1 stop18h 17m
Alaska Airlines
st 9/164:27 pm
ONT
- BOS
2 stops10h 42m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$385
This Super.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
út 7/282:45 pm
BOS
- ONT
1 stop10h 50m
JetBlue
ne 8/211:58 pm
ONT
- BOS
1 stop11h 45m
JetBlue
Deal found 6/11![JetBlue logo]()
$386
This Booking.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
čt 9/247:59 pm
BOS
- ONT
2 stops23h 11m
Alaska Airlines
po 9/283:14 pm
ONT
- BOS
1 stop13h 25m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$387
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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.
čt 7/235:20 pm
BOS
- ONT
1 stop8h 05m
Southwest
ne 8/211:55 am
ONT
- BOS
1 stop11h 00m
Southwest
Deal found 6/10![Southwest logo]()
$388
This Southwest deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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.
út 7/215:35 am
BOS
- ONT
2 stops10h 05m
Southwest
út 7/285:15 am
ONT
- BOS
2 stops9h 45m
Southwest
Deal found 6/13![Southwest logo]()
$389
This Booking.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pá 9/187:59 pm
BOS
- ONT
2 stops23h 11m
Alaska Airlines
po 9/217:12 am
ONT
- BOS
1 stop19h 57m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$390
Best flights from Boston to OntarioDiscover carefully curated flight deals from Boston to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated červen 15, 2026.
Discover carefully curated flight deals from Boston to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated červen 15, 2026.
This Delta deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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.
so 8/156:05 am
BOS
- ONT
1 stop9h 11m
Delta
so 8/295:05 pm
ONT
- BOS
1 stop10h 25m
Delta
Deal found 6/14![Delta logo]()
$377
This JetBlue deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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.
st 7/224:31 pm
BOS
- ONT
1 stop9h 04m
JetBlue
ne 8/211:58 pm
ONT
- BOS
1 stop8h 35m
JetBlue
Deal found 6/10![JetBlue logo]()
$393
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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.
čt 7/235:20 pm
BOS
- ONT
1 stop8h 05m
Southwest
po 8/39:40 pm
ONT
- BOS
2 stops9h 15m
Southwest
Deal found 6/10![Southwest logo]()
$403
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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.
čt 8/206:00 am
BOS
- ONT
1 stop9h 12m
United Airlines
ne 8/237:13 pm
ONT
- BOS
2 stops12h 41m
United Airlines
Deal found 6/11![United Airlines logo]()
$427
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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.
po 9/146:05 am
BOS
- ONT
1 stop9h 05m
Delta
pá 9/255:13 pm
ONT
- BOS
1 stop10h 17m
Delta
Deal found 6/12![Delta logo]()
$383
This Southwest deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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.
pá 10/232:40 pm
BOS
- ONT
2 stops10h 55m
Southwest
út 10/2711:55 pm
ONT
- BOS
2 stops9h 45m
Southwest
Deal found 6/15![Southwest logo]()
$404
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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.
čt 7/26:00 am
BOS
- ONT
1 stop9h 12m
United Airlines
čt 7/91:50 pm
ONT
- BOS
1 stop8h 21m
United Airlines
Deal found 6/12![United Airlines logo]()
$437
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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.
čt 10/293:50 pm
BOS
- ONT
2 stops9h 45m
Southwest
ne 11/16:50 pm
ONT
- BOS
2 stops10h 15m
Southwest
Deal found 6/10![Southwest logo]()
$419
This Delta deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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.
pá 9/116:05 am
BOS
- ONT
1 stop9h 11m
Delta
čt 9/1710:00 pm
ONT
- BOS
1 stop8h 42m
Delta
Deal found 6/14![Delta logo]()
$423
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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.
so 6/279:07 am
BOS
- ONT
1 stop9h 22m
United Airlines
so 7/46:10 am
ONT
- BOS
1 stop8h 21m
United Airlines
Deal found 6/11![United Airlines logo]()
$437
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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.
čt 7/26:00 am
BOS
- ONT
1 stop9h 12m
United Airlines
út 7/71:18 pm
ONT
- BOS
1 stop7h 26m
United Airlines
Deal found 6/11![United Airlines logo]()
$437
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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.
čt 7/26:00 am
BOS
- ONT
1 stop9h 12m
United Airlines
pá 7/36:10 am
ONT
- BOS
1 stop10h 20m
United Airlines
Deal found 6/12![United Airlines logo]()
$437
Last-minute flights from Boston to OntarioDiscover last-minute flight deals from Boston to Ontario. Data last updated červen 15, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Ontario. Data last updated červen 15, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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.
so 7/45:30 am
BOS
- ONT
1 stop8h 10m
Delta
st 7/81:00 pm
ONT
- BOS
1 stop7h 47m
Delta
Deal found 6/12![Delta logo]()
$377
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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.
so 7/48:45 am
BOS
- ONT
2 stops9h 10m
Southwest
po 7/139:40 pm
ONT
- BOS
2 stops10h 15m
Southwest
Deal found 6/10![Southwest logo]()
$394
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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.
st 7/155:25 am
BOS
- ONT
1 stop9h 40m
Southwest
čt 7/169:40 pm
ONT
- BOS
2 stops10h 15m
Southwest
Deal found 6/11![Southwest logo]()
$407
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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.
út 7/213:45 pm
BOS
- ONT
2 stops10h 05m
Southwest
st 7/225:30 am
ONT
- BOS
2 stops9h 30m
Southwest
Deal found 6/10![Southwest logo]()
$387
This Southwest deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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.
út 7/215:35 am
BOS
- ONT
2 stops10h 05m
Southwest
út 7/285:15 am
ONT
- BOS
2 stops9h 45m
Southwest
Deal found 6/13![Southwest logo]()
$389
This Southwest deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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.
út 7/215:25 am
BOS
- ONT
1 stop9h 40m
Southwest
pá 7/2412:50 pm
ONT
- BOS
1 stop9h 15m
Southwest
Deal found 6/12![Southwest logo]()
$402
This JetBlue deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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.
st 7/224:31 pm
BOS
- ONT
1 stop9h 04m
JetBlue
ne 8/211:58 pm
ONT
- BOS
1 stop8h 35m
JetBlue
Deal found 6/10![JetBlue logo]()
$393
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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.
čt 7/235:20 pm
BOS
- ONT
1 stop8h 05m
Southwest
ne 8/211:55 am
ONT
- BOS
1 stop11h 00m
Southwest
Deal found 6/10![Southwest logo]()
$388
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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.
čt 7/235:20 pm
BOS
- ONT
1 stop8h 05m
Southwest
po 8/39:40 pm
ONT
- BOS
2 stops9h 15m
Southwest
Deal found 6/10![Southwest logo]()
$403
This Super.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
út 7/282:45 pm
BOS
- ONT
1 stop10h 50m
JetBlue
ne 8/211:58 pm
ONT
- BOS
1 stop11h 45m
JetBlue
Deal found 6/11![JetBlue logo]()
$386
This American Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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.
út 7/286:00 am
BOS
- ONT
1 stop8h 45m
American Airlines
út 8/47:15 pm
ONT
- BOS
1 stop7h 30m
American Airlines
Deal found 6/13![American Airlines logo]()
$398
This Delta deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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.
st 7/2912:30 pm
BOS
- ONT
1 stop9h 00m
Delta
čt 8/61:06 pm
ONT
- BOS
1 stop7h 51m
Delta
Deal found 6/13![Delta logo]()
$404
One-way flights from Boston to OntarioSearch for one-way flight options from Boston to Ontario. Find affordable one-way fares based on user searches. Data last updated červen 15, 2026.
Search for one-way flight options from Boston to Ontario. Find affordable one-way fares based on user searches. Data last updated červen 15, 2026.
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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.
st 12/212:50 pm
BOS
- ONT
1 stop8h 25m
Southwest
Deal found 6/11![Southwest logo]()
$123
This Super.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
st 8/124:30 pm
BOS
- ONT
1 stop9h 05m
JetBlue
Deal found 6/11![JetBlue logo]()
$126
This Super.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pá 8/144:30 pm
BOS
- ONT
1 stop9h 05m
JetBlue
Deal found 6/12![JetBlue logo]()
$127
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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.
čt 8/2710:30 am
BOS
- ONT
1 stop8h 00m
Southwest
Deal found 6/11![Southwest logo]()
$129
This JetBlue deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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.
čt 8/204:30 pm
BOS
- ONT
1 stop9h 05m
JetBlue
Deal found 6/11![JetBlue logo]()
$133
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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.
so 8/295:00 am
BOS
- ONT
1 stop12h 30m
Southwest
Deal found 6/10![Southwest logo]()
$135
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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.
po 9/215:40 am
BOS
- ONT
1 stop7h 40m
Southwest
Deal found 6/11![Southwest logo]()
$148
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” 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.
čt 8/202:00 pm
BOS
- ONT
1 stop9h 01m
United Airlines
Deal found 6/10![United Airlines logo]()
$149
This CheapOair deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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.
st 9/237:12 am
BOS
- ONT
1 stop10h 04m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$150
This Booking.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
so 9/267:59 pm
BOS
- ONT
1 stop18h 17m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$155
Find flight deals from Boston to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated červen 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $377 (Booking.com) |
One-way from | $123 (Southwest) |
Popular in | December |
Cheapest in | February |
Average price | $477 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated červen 15, 2026.
Use the filters below to find and compare flights from Boston to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonOntario
BOS - ONT
BOSONT
Boston Logan Intl
so 8/15
6:05 am-12:16 pm
1 stop9h 11m
Ontario
so 8/29
5:05 pm-6:30 am
1 stop10h 25m
$377
BostonOntario
BOS - ONT
BOSONT
Boston Logan Intl
po 9/14
6:05 am-12:10 pm
1 stop9h 05m
Ontario
pá 9/25
5:13 pm-6:30 am
1 stop10h 17m
$383
BostonOntario
BOS - ONT
BOSONT
Boston Logan Intl
st 7/22
4:31 pm-10:35 pm
1 stop9h 04m
Ontario
ne 8/2
11:58 pm-11:33 am
1 stop8h 35m
$393
BostonOntario
BOS - ONT
BOSONT
Boston Logan Intl
čt 7/23
5:20 pm-10:25 pm
1 stop8h 05m
Ontario
po 8/3
9:40 pm-9:55 am
2 stops9h 15m
$403
BostonOntario
BOS - ONT
BOSONT
Boston Logan Intl
pá 10/23
2:40 pm-10:35 pm
2 stops10h 55m
Ontario
út 10/27
11:55 pm-12:40 pm
2 stops9h 45m
$404
BostonOntario
BOS - ONT
BOSONT
Boston Logan Intl
čt 10/29
3:50 pm-10:35 pm
2 stops9h 45m
Ontario
ne 11/1
6:50 pm-8:05 am
2 stops10h 15m
$419
BostonOntario
BOS - ONT
BOSONT
Boston Logan Intl
pá 9/11
6:05 am-12:16 pm
1 stop9h 11m
Ontario
čt 9/17
10:00 pm-9:42 am
1 stop8h 42m
$423
BostonOntario
BOS - ONT
BOSONT
Boston Logan Intl
čt 8/20
6:00 am-12:12 pm
1 stop9h 12m
Ontario
ne 8/23
7:13 pm-10:54 am
2 stops12h 41m
$427
BostonOntario
BOS - ONT
BOSONT
Boston Logan Intl
čt 7/2
6:00 am-12:12 pm
1 stop9h 12m
Ontario
čt 7/9
1:50 pm-1:11 am
1 stop8h 21m
$437
BostonOntario
BOS - ONT
BOSONT
Boston Logan Intl
so 6/27
9:07 am-3:29 pm
1 stop9h 22m
Ontario
so 7/4
6:10 am-5:31 pm
1 stop8h 21m
$437
Showing 1-10 of 24 resultsSorted by cheapest first
Compare providers for flights from Boston to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Ontario in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boston-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boston-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boston to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Boston with our price prediction graph.
BOS-ONT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Boston to Ontario
How far ahead should I book a flight from Boston to Ontario?
The price you pay for your flight from Boston to Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 60 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Boston to Ontario?
Currently, February is the cheapest month in which you can book a flight from Boston to Ontario (average of $317). Flying from Boston to Ontario in December is currently the most expensive (average of $877). 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 Boston to Ontario?
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated červen 15, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Boston to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from Boston to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Boston to Ontario
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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Boston to Ontario by cabin class
Find flights from Boston to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on červen 15, 2026.
Boston and Ontario flights
Browse other Boston and Ontario flight options. Last updated on červen 15, 2026.
Other flights from Boston
Browse through other flights departing from Boston. Flights are based on user searches made on Cheapflights and were last updated on červen 15, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from Boston to Ontario
Discover the top 5 airlines that operate flights from Boston to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated červen 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$149 | Average$526 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$239 | Average$437 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$258 | Average$419 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$305 | Average$478 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$319 | Average$762 | FlexibilityNo cancel fee | On-time62% |