$131+ Cheap flights from Ontario (ONT) to New Hampshire
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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MHT
Jun 6 — Jun 131
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to New Hampshire with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 New Hampshire
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Cheapest flights from Ontario to New HampshireExplore the most affordable flight options available from Ontario to New Hampshire. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 7, 2026.
Explore the most affordable flight options available from Ontario to New Hampshire. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 7, 2026.
This Delta deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:05 pm
ONT
- BOS
1 stop10h 04m
Delta
Tue 9/291:55 pm
BOS
- ONT
1 stop11h 01m
Delta
Deal found 5/6![Delta logo]()
$297
This American Airlines deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 5/2310:00 pm
ONT
- BOS
1 stop8h 22m
American Airlines
Fri 5/296:20 am
BOS
- ONT
1 stop8h 45m
American Airlines
Deal found 5/3![American Airlines logo]()
$298
This American Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2912:40 pm
ONT
- BOS
1 stop8h 24m
American Airlines
Tue 6/211:20 am
BOS
- ONT
2 stops10h 02m
American Airlines
Deal found 5/4![American Airlines logo]()
$302
This Southwest deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2111:55 pm
ONT
- BOS
1 stop8h 00m
Southwest
Tue 7/285:25 am
BOS
- ONT
1 stop9h 40m
Southwest
Deal found 5/5![Southwest logo]()
$303
This Southwest deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/69:50 am
ONT
- BOS
2 stops10h 45m
Southwest
Fri 6/127:55 am
BOS
- ONT
2 stops10h 10m
Southwest
Deal found 5/4![Southwest logo]()
$307
This Southwest deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/52:30 pm
ONT
- BOS
1 stop7h 30m
Southwest
Fri 6/125:25 am
BOS
- ONT
1 stop11h 25m
Southwest
Deal found 5/5![Southwest logo]()
$308
This Delta deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:05 pm
ONT
- BOS
1 stop10h 04m
Delta
Tue 10/273:10 pm
BOS
- ONT
1 stop10h 04m
Delta
Deal found 5/4![Delta logo]()
$318
This Southwest deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/89:40 pm
ONT
- BOS
2 stops10h 15m
Southwest
Fri 6/125:25 am
BOS
- ONT
1 stop11h 25m
Southwest
Deal found 5/5![Southwest logo]()
$320
This Southwest deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 6/2911:55 pm
ONT
- BOS
1 stop9h 20m
Southwest
Tue 7/75:25 am
BOS
- ONT
1 stop9h 40m
Southwest
Deal found 5/3![Southwest logo]()
$323
This American Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 5/1811:29 pm
ONT
- BOS
1 stop10h 15m
American Airlines
Sun 5/246:20 am
BOS
- ONT
1 stop8h 45m
American Airlines
Deal found 5/1![American Airlines logo]()
$327
This American Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1111:59 pm
ONT
- BOS
1 stop10h 40m
American Airlines
Sat 8/156:45 am
BOS
- ONT
1 stop10h 08m
American Airlines
Deal found 5/5![American Airlines logo]()
$328
This Southwest deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 7/46:00 am
ONT
- BOS
1 stop11h 25m
Southwest
Tue 11/1012:50 pm
BOS
- ONT
2 stops10h 45m
Southwest
Deal found 5/3![Southwest logo]()
$329
Best flights from Ontario to New HampshireDiscover carefully curated flight deals from Ontario to New Hampshire that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 7, 2026.
Discover carefully curated flight deals from Ontario to New Hampshire that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 7, 2026.
This Alaska Airlines deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 5/305:57 pm
ONT
- BOS
1 stop9h 23m
Alaska Airlines
Tue 6/27:20 am
BOS
- ONT
1 stop10h 49m
Alaska Airlines
Deal found 5/3![Alaska Airlines logo]()
$359
This Southwest deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 11/26:50 pm
ONT
- BOS
2 stops10h 25m
Southwest
Tue 11/312:50 pm
BOS
- ONT
2 stops10h 45m
Southwest
Deal found 5/3![Southwest logo]()
$363
This Delta deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1612:00 pm
ONT
- BOS
1 stop9h 58m
Delta
Tue 10/204:20 pm
BOS
- ONT
1 stop8h 54m
Delta
Deal found 5/1![Delta logo]()
$368
This American Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:14 pm
ONT
- ORH
2 stops18h 37m
American Airlines
Sun 7/125:16 pm
ORH
- ONT
2 stops21h 47m
American Airlines
Deal found 5/6![American Airlines logo]()
$402
This United Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” 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 5/306:30 am
ONT
- MHT
2 stops14h 29m
United Airlines
Sat 6/62:37 pm
MHT
- ONT
2 stops11h 14m
United Airlines
Deal found 5/2![United Airlines logo]()
$409
This JetBlue deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” 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 7/2111:50 pm
ONT
- PWM
1 stop10h 55m
JetBlue
Tue 8/111:17 pm
PWM
- ONT
1 stop12h 18m
JetBlue
Deal found 5/2![JetBlue logo]()
$415
This Southwest deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/139:40 pm
ONT
- PWM
1 stop9h 15m
Southwest
Tue 7/215:30 am
PWM
- ONT
1 stop9h 35m
Southwest
Deal found 5/6![Southwest logo]()
$411
This United Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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
2 stops11h 10m
United Airlines
Wed 9/21:29 pm
BOS
- ONT
1 stop11h 30m
United Airlines
Deal found 5/1![United Airlines logo]()
$412
This Delta deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3011:56 am
ONT
- PWM
1 stop8h 24m
Delta
Sat 9/126:00 am
PWM
- ONT
1 stop8h 04m
Delta
Deal found 5/5![Delta logo]()
$413
This Alaska Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 5/305:57 pm
ONT
- BOS
1 stop9h 23m
Alaska Airlines
Wed 6/107:04 am
BOS
- ONT
1 stop12h 53m
Alaska Airlines
Deal found 5/1![Alaska Airlines logo]()
$418
This American Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/204:52 pm
ONT
- ORH
2 stops21h 01m
American Airlines
Sat 5/235:18 pm
ORH
- ONT
2 stops19h 13m
American Airlines
Deal found 5/6![American Airlines logo]()
$447
This JetBlue deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1111:24 pm
ONT
- PWM
1 stop9h 57m
JetBlue
Fri 7/172:49 pm
PWM
- ONT
1 stop10h 46m
JetBlue
Deal found 5/5![JetBlue logo]()
$452
This Delta deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/110:00 pm
ONT
- ORH
2 stops14h 33m
Delta
Mon 8/105:40 pm
ORH
- ONT
2 stops20h 02m
Delta
Deal found 5/5![Delta logo]()
$431
This Southwest deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” 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 5/3011:55 pm
ONT
- MHT
1 stop7h 45m
Southwest
Sat 6/68:50 am
MHT
- ONT
2 stops12h 00m
Southwest
Deal found 5/2![Southwest logo]()
$433
This JetBlue deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/111:24 pm
ONT
- PWM
1 stop9h 53m
JetBlue
Tue 8/111:17 pm
PWM
- ONT
1 stop12h 18m
JetBlue
Deal found 5/6![JetBlue logo]()
$452
This Alaska Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/317:00 am
ONT
- BOS
1 stop20h 20m
Alaska Airlines
Wed 6/37:20 am
BOS
- ONT
1 stop10h 49m
Alaska Airlines
Deal found 5/6![Alaska Airlines logo]()
$461
This American Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” 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 7/177:14 pm
ONT
- ORH
2 stops18h 37m
American Airlines
Wed 7/295:16 pm
ORH
- ONT
2 stops32h 16m
American Airlines
Deal found 5/2![American Airlines logo]()
$462
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:00 am
ONT
- BOS
2 stops13h 58m
United Airlines
Tue 8/189:34 am
BOS
- ONT
2 stops14h 18m
United Airlines
Deal found 5/5![United Airlines logo]()
$468
This Delta deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” 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 8/2912:32 pm
ONT
- BOS
1 stop9h 53m
Delta
Sat 9/55:45 am
BOS
- ONT
1 stop8h 19m
Delta
Deal found 5/2![Delta logo]()
$438
This Southwest deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2511:55 pm
ONT
- MHT
1 stop8h 20m
Southwest
Sun 9/276:10 pm
MHT
- ONT
1 stop8h 25m
Southwest
Deal found 5/4![Southwest logo]()
$457
This Priceline deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3111:50 pm
ONT
- PWM
1 stop9h 31m
JetBlue
Tue 9/81:17 pm
PWM
- ONT
1 stop12h 18m
JetBlue
Deal found 5/6![JetBlue logo]()
$461
This American Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” 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 7/196:10 am
ONT
- ORH
2 stops31h 41m
American Airlines
Wed 7/295:16 pm
ORH
- ONT
2 stops32h 16m
American Airlines
Deal found 5/2![American Airlines logo]()
$462
This Alaska Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:00 am
ONT
- BOS
1 stop9h 59m
Alaska Airlines
Sun 9/277:09 am
BOS
- ONT
1 stop10h 09m
Alaska Airlines
Deal found 5/4![Alaska Airlines logo]()
$477
This American Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” 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 7/207:14 pm
ONT
- ORH
2 stops18h 37m
American Airlines
Wed 7/295:16 pm
ORH
- ONT
2 stops32h 16m
American Airlines
Deal found 5/2![American Airlines logo]()
$462
This Southwest deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” 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 6/226:30 pm
ONT
- PWM
2 stops12h 25m
Southwest
Wed 7/110:30 am
PWM
- ONT
2 stops10h 05m
Southwest
Deal found 5/2![Southwest logo]()
$463
This JetBlue deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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.
Fri 7/311:54 pm
ONT
- BOS
1 stop11h 30m
JetBlue
Fri 7/104:30 pm
BOS
- ONT
1 stop9h 05m
JetBlue
Deal found 5/1![JetBlue logo]()
$468
This Alaska Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/265:57 pm
ONT
- BOS
1 stop9h 23m
Alaska Airlines
Wed 6/36:00 am
BOS
- ONT
1 stop11h 55m
Alaska Airlines
Deal found 5/5![Alaska Airlines logo]()
$477
This United Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:00 am
ONT
- PWM
1 stop7h 43m
United Airlines
Wed 9/2310:04 am
PWM
- ONT
2 stops15h 54m
United Airlines
Deal found 5/4![United Airlines logo]()
$526
This Delta deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 7/2710:00 pm
ONT
- ORH
2 stops16h 00m
Delta
Fri 7/315:40 pm
ORH
- ONT
2 stops19h 58m
Delta
Deal found 5/3![Delta logo]()
$514
This JetBlue deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” 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.
Sat 8/2911:24 pm
ONT
- PWM
1 stop9h 57m
JetBlue
Wed 9/22:40 pm
PWM
- ONT
1 stop10h 55m
JetBlue
Deal found 5/2![JetBlue logo]()
$473
Last-minute flights from Ontario to New HampshireDiscover last-minute flight deals from Ontario to New Hampshire. Data last updated May 7, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to New Hampshire. Data last updated May 7, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 5/1811:29 pm
ONT
- BOS
1 stop10h 15m
American Airlines
Sun 5/246:20 am
BOS
- ONT
1 stop8h 45m
American Airlines
Deal found 5/1![American Airlines logo]()
$327
This Southwest deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 5/189:55 pm
ONT
- BOS
1 stop7h 20m
Southwest
Tue 5/265:35 am
BOS
- ONT
1 stop7h 40m
Southwest
Deal found 5/3![Southwest logo]()
$332
This Alaska Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/195:57 pm
ONT
- BOS
1 stop9h 24m
Alaska Airlines
Sun 5/247:20 am
BOS
- ONT
1 stop10h 49m
Alaska Airlines
Deal found 5/4![Alaska Airlines logo]()
$338
This American Airlines deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 5/2310:00 pm
ONT
- BOS
1 stop8h 22m
American Airlines
Fri 5/296:20 am
BOS
- ONT
1 stop8h 45m
American Airlines
Deal found 5/3![American Airlines logo]()
$298
This Alaska Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 5/5![Alaska Airlines logo]()
$334
This Delta deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 6/36:45 pm
BOS
- ONT
1 stop7h 49m
Delta
Deal found 5/5![Delta logo]()
$297
This American Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2912:40 pm
ONT
- BOS
1 stop8h 24m
American Airlines
Tue 6/211:20 am
BOS
- ONT
2 stops10h 02m
American Airlines
Deal found 5/4![American Airlines logo]()
$302
This American Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/291:10 pm
ONT
- BOS
1 stop7h 04m
American Airlines
Sat 6/66:00 am
BOS
- ONT
1 stop8h 51m
American Airlines
Deal found 5/6![American Airlines logo]()
$318
This Southwest deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/52:30 pm
ONT
- BOS
1 stop7h 30m
Southwest
Fri 6/125:25 am
BOS
- ONT
1 stop11h 25m
Southwest
Deal found 5/5![Southwest logo]()
$308
This Southwest deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/69:50 am
ONT
- BOS
2 stops10h 45m
Southwest
Fri 6/127:55 am
BOS
- ONT
2 stops10h 10m
Southwest
Deal found 5/4![Southwest logo]()
$307
This Southwest deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/89:40 pm
ONT
- BOS
2 stops10h 15m
Southwest
Fri 6/125:25 am
BOS
- ONT
1 stop11h 25m
Southwest
Deal found 5/5![Southwest logo]()
$320
This Southwest deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 6/2911:55 pm
ONT
- BOS
1 stop9h 20m
Southwest
Tue 7/75:25 am
BOS
- ONT
1 stop9h 40m
Southwest
Deal found 5/3![Southwest logo]()
$323
One-way flights from Ontario to New HampshireSearch for one-way flight options from Ontario to New Hampshire. Find affordable one-way fares based on user searches. Data last updated May 7, 2026.
Search for one-way flight options from Ontario to New Hampshire. Find affordable one-way fares based on user searches. Data last updated May 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:00 am
ONT
- BOS
2 stops50h 06m
Frontier
Deal found 5/6![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:50 am
ONT
- BOS
2 stops35h 37m
Frontier
Deal found 5/3![Frontier logo]()
$133
This Delta deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Deal found 5/6![Delta logo]()
$149
This American Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Deal found 5/6![American Airlines logo]()
$154
This Alaska Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 5/4![Alaska Airlines logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 6/210:50 am
ONT
- BOS
2 stops41h 59m
Frontier
Deal found 5/3![Frontier logo]()
$158
This Alaska Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:00 am
ONT
- BOS
1 stop9h 11m
Alaska Airlines
Deal found 5/5![Alaska Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 5/278:06 pm
ONT
- BOS
2 stops32h 43m
Frontier
Deal found 5/3![Frontier logo]()
$160
This JetBlue deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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.
Mon 7/2011:50 pm
ONT
- PWM
1 stop9h 31m
JetBlue
Deal found 5/3![JetBlue logo]()
$165
This Southwest deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/279:55 pm
ONT
- BOS
1 stop9h 05m
Southwest
Deal found 5/4![Southwest logo]()
$170
This Alaska Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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
Deal found 5/1![Alaska Airlines logo]()
$180
This American Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:20 am
ONT
- PWM
1 stop8h 11m
American Airlines
Deal found 5/4![American Airlines logo]()
$180
Find flight deals from Ontario to New Hampshire
Keep the following information in mind while searching for Ontario to New Hampshire flight deals. Data was last updated May 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $297 (Delta) |
One-way from | $131 (Kiwi.com) |
Popular in | April |
Cheapest in | January |
Average price | $397 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to New Hampshire 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 7, 2026.
Use the filters below to find and compare flights from Ontario to New Hampshire that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioBoston
ONT - BOS
ONTBOS
Ontario
Sat 5/30
5:57 pm-6:20 am
1 stop9h 23m
Boston Logan Intl
Tue 6/2
7:20 am-3:09 pm
1 stop10h 49m
$359
OntarioBoston
ONT - BOS
ONTBOS
Ontario
Mon 11/2
6:50 pm-8:15 am
2 stops10h 25m
Boston Logan Intl
Tue 11/3
12:50 pm-8:35 pm
2 stops10h 45m
$363
OntarioBoston
ONT - BOS
ONTBOS
Ontario
Fri 10/16
12:00 pm-12:58 am
1 stop9h 58m
Boston Logan Intl
Tue 10/20
4:20 pm-10:14 pm
1 stop8h 54m
$368
OntarioWorcester
ONT - ORH
ONTORH
Ontario
Thu 7/9
7:14 pm-4:51 pm
2 stops18h 37m
Worcester
Sun 7/12
5:16 pm-12:03 pm
2 stops21h 47m
$402
OntarioManchester
ONT - MHT
ONTMHT
Ontario
Sat 5/30
6:30 am-11:59 pm
2 stops14h 29m
Manchester
Sat 6/6
2:37 pm-10:51 pm
2 stops11h 14m
$409
OntarioPortland
ONT - PWM
ONTPWM
Ontario
Mon 7/13
9:40 pm-9:55 am
1 stop9h 15m
Portland
Tue 7/21
5:30 am-12:05 pm
1 stop9h 35m
$411
OntarioBoston
ONT - BOS
ONTBOS
Ontario
Tue 9/1
7:13 pm-9:23 am
2 stops11h 10m
Boston Logan Intl
Wed 9/2
1:29 pm-9:59 pm
1 stop11h 30m
$412
Quickest round-trip
OntarioPortland
ONT - PWM
ONTPWM
Ontario
Sun 8/30
11:56 am-11:20 pm
1 stop8h 24m
Portland
Sat 9/12
6:00 am-11:04 am
1 stop8h 04m
$413
OntarioPortland
ONT - PWM
ONTPWM
Ontario
Tue 7/21
11:50 pm-1:45 pm
1 stop10h 55m
Portland
Tue 8/11
1:17 pm-10:35 pm
1 stop12h 18m
$415
OntarioBoston
ONT - BOS
ONTBOS
Ontario
Sat 5/30
5:57 pm-6:20 am
1 stop9h 23m
Boston Logan Intl
Wed 6/10
7:04 am-4:57 pm
1 stop12h 53m
$418
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to New Hampshire
Have a flexible travel schedule? Discover the best time to fly to New Hampshire from Ontario with our price prediction graph.
ONT-BOS
ONT-PWM
ONT-MHT
ONT-ORH
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 New Hampshire
ONT-USNH
ONT-BOS
ONT-PWM
ONT-MHT
ONT-ORH
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing New Hampshire
Get insights into the airlines that provide service to New Hampshire. 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 New Hampshire. Reviews last updated May 7, 2026.
Read reviews from past customers who have flown Southwest from Ontario to New Hampshire. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.6
Overall
7.9
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Crew
8.6
Overall
7.9
Food
7.0
Entertainment
7.5
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 New Hampshire. 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 New Hampshire
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to New Hampshire by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to New Hampshire by cabin class
Find flights from Ontario to New Hampshire, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and New Hampshire flights
Browse other Ontario and New Hampshire flight options. Last updated on May 7, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to New Hampshire flights
Consider these flights traveling from Ontario to New Hampshire.
Top airline flying from Ontario to New Hampshire
Discover the top airline that operate flights from Ontario to New Hampshire. 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 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$436 | Average$537 | FlexibilityNo cancel fee | On-time63% |