$99+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MHT
May 27 — Jun 31
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to New Hampshire with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 April 27, 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 April 27, 2026.
This American Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:59 pm
ONT
- BOS
1 stop8h 50m
American Airlines
Fri 6/54:06 pm
BOS
- ONT
1 stop10h 53m
American Airlines
Deal found 4/22![American Airlines logo]()
$253
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Tue 5/1212:19 pm
ONT
- BOS
1 stop9h 05m
American Airlines
Wed 5/276:00 am
BOS
- ONT
1 stop8h 50m
American Airlines
Deal found 4/23![American Airlines logo]()
$277
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Sun 9/67:06 am
ONT
- BOS
1 stop10h 58m
American Airlines
Wed 9/91:11 pm
BOS
- ONT
1 stop9h 44m
American Airlines
Deal found 4/22![American Airlines logo]()
$282
This United Airlines deal was found by Cheapflights users on 4/23. 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.
Mon 6/16:30 pm
ONT
- BOS
1 stop8h 28m
United Airlines
Tue 6/96:00 am
BOS
- ONT
1 stop9h 12m
United Airlines
Deal found 4/23![United Airlines logo]()
$283
This Southwest deal was found by Cheapflights users on 4/22. 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 9/28:35 am
ONT
- BOS
2 stops9h 50m
Southwest
Sat 9/58:10 am
BOS
- ONT
2 stops10h 50m
Southwest
Deal found 4/22![Southwest logo]()
$285
This United Airlines deal was found by Cheapflights users on 4/23. 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 5/126:00 am
ONT
- BOS
1 stop8h 07m
United Airlines
Wed 5/279:50 am
BOS
- ONT
2 stops10h 38m
United Airlines
Deal found 4/23![United Airlines logo]()
$288
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:59 pm
ONT
- BOS
1 stop10h 24m
United Airlines
Wed 5/134:35 pm
BOS
- ONT
1 stop9h 00m
United Airlines
Deal found 4/26![United Airlines logo]()
$292
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1612:00 pm
ONT
- BOS
1 stop10h 06m
Delta
Wed 9/304:20 pm
BOS
- ONT
1 stop8h 36m
Delta
Deal found 4/23![Delta logo]()
$297
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1010:59 pm
ONT
- BOS
1 stop9h 35m
Delta
Wed 8/191:55 pm
BOS
- ONT
1 stop11h 01m
Delta
Deal found 4/26![Delta logo]()
$298
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Sun 9/612:59 pm
ONT
- BOS
1 stop7h 25m
American Airlines
Sat 9/127:29 am
BOS
- ONT
1 stop8h 58m
American Airlines
Deal found 4/22![American Airlines logo]()
$301
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:00 am
ONT
- BOS
1 stop7h 28m
United Airlines
Sat 10/3112:20 pm
BOS
- ONT
2 stops11h 00m
United Airlines
Deal found 4/25![United Airlines logo]()
$302
This United Airlines deal was found by Cheapflights users on 4/23. 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 5/125:00 am
ONT
- PWM
1 stop7h 41m
United Airlines
Wed 5/274:56 pm
PWM
- ONT
1 stop8h 55m
United Airlines
Deal found 4/23![United Airlines logo]()
$313
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 April 27, 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 April 27, 2026.
This American Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/910:59 am
ONT
- ORH
2 stops24h 15m
American Airlines
Wed 5/132:39 pm
ORH
- ONT
2 stops21h 00m
American Airlines
Deal found 4/24![American Airlines logo]()
$327
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/165:59 pm
ONT
- BOS
1 stop10h 36m
Delta
Sun 7/125:30 am
BOS
- ONT
1 stop8h 08m
Delta
Deal found 4/26![Delta logo]()
$358
This JetBlue deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1011:50 pm
ONT
- PWM
1 stop9h 27m
JetBlue
Tue 8/181:17 pm
PWM
- ONT
1 stop12h 18m
JetBlue
Deal found 4/24![JetBlue logo]()
$366
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/912:50 pm
ONT
- BOS
1 stop9h 10m
Southwest
Mon 7/133:55 pm
BOS
- ONT
1 stop9h 30m
Southwest
Deal found 4/22![Southwest logo]()
$374
This Alaska Airlines deal was found by Cheapflights users on 4/23. 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.
Tue 6/25:57 pm
ONT
- BOS
1 stop9h 27m
Alaska Airlines
Thu 6/117:03 am
BOS
- ONT
1 stop12h 27m
Alaska Airlines
Deal found 4/23![Alaska Airlines logo]()
$393
This United Airlines deal was found by Cheapflights users on 4/22. 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 8/257:00 am
ONT
- PWM
1 stop7h 44m
United Airlines
Wed 8/265:15 am
PWM
- ONT
2 stops16h 04m
United Airlines
Deal found 4/22![United Airlines logo]()
$404
This American Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1111:59 pm
ONT
- ORH
2 stops18h 08m
American Airlines
Mon 9/147:33 pm
ORH
- ONT
2 stops19h 15m
American Airlines
Deal found 4/27![American Airlines logo]()
$343
This Delta deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:00 am
ONT
- BOS
1 stop7h 34m
Delta
Tue 5/126:45 pm
BOS
- ONT
1 stop7h 49m
Delta
Deal found 4/24![Delta logo]()
$378
This Southwest deal was found by Cheapflights users on 4/22. 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 6/512:50 pm
ONT
- BOS
1 stop9h 10m
Southwest
Sun 6/77:05 pm
BOS
- ONT
1 stop8h 20m
Southwest
Deal found 4/22![Southwest logo]()
$389
This Alaska Airlines deal was found by Cheapflights users on 4/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/235:57 pm
ONT
- BOS
1 stop9h 23m
Alaska Airlines
Wed 5/275:32 pm
BOS
- ONT
1 stop9h 24m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$416
This JetBlue deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/311:50 pm
ONT
- PWM
1 stop9h 27m
JetBlue
Fri 8/72:49 pm
PWM
- ONT
1 stop10h 46m
JetBlue
Deal found 4/25![JetBlue logo]()
$436
This Southwest deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/411:55 pm
ONT
- MHT
1 stop7h 55m
Southwest
Mon 6/85:10 pm
MHT
- ONT
1 stop8h 15m
Southwest
Deal found 4/27![Southwest logo]()
$399
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/246:30 pm
ONT
- BOS
1 stop8h 28m
United Airlines
Wed 5/276:00 am
BOS
- ONT
1 stop9h 12m
United Airlines
Deal found 4/26![United Airlines logo]()
$440
This Alaska Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:57 pm
ONT
- BOS
1 stop9h 23m
Alaska Airlines
Fri 5/296:00 am
BOS
- ONT
1 stop11h 55m
Alaska Airlines
Deal found 4/25![Alaska Airlines logo]()
$416
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2310:00 pm
ONT
- ORH
2 stops16h 00m
Delta
Mon 7/275:40 pm
ORH
- ONT
2 stops19h 58m
Delta
Deal found 4/26![Delta logo]()
$444
This United Airlines deal was found by Cheapflights users on 4/23. 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 5/126:59 pm
ONT
- PWM
2 stops12h 19m
United Airlines
Wed 5/275:15 am
PWM
- ONT
2 stops10h 32m
United Airlines
Deal found 4/23![United Airlines logo]()
$452
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1612:50 pm
ONT
- BOS
1 stop9h 10m
Southwest
Mon 7/204:45 pm
BOS
- ONT
2 stops10h 20m
Southwest
Deal found 4/25![Southwest logo]()
$418
This American Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/231:10 pm
ONT
- ORH
2 stops24h 41m
American Airlines
Sat 7/255:16 pm
ORH
- ONT
2 stops19h 13m
American Airlines
Deal found 4/26![American Airlines logo]()
$469
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1212:08 pm
ONT
- PWM
1 stop8h 04m
Delta
Wed 5/272:05 pm
PWM
- ONT
2 stops12h 29m
Delta
Deal found 4/26![Delta logo]()
$449
This Alaska Airlines deal was found by Cheapflights users on 4/23. 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.
Mon 6/15:57 pm
ONT
- BOS
1 stop9h 23m
Alaska Airlines
Mon 6/86:00 am
BOS
- ONT
1 stop31h 21m
Alaska Airlines
Deal found 4/23![Alaska Airlines logo]()
$461
This Southwest deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/218:10 am
ONT
- MHT
2 stops10h 45m
Southwest
Thu 5/2812:10 pm
MHT
- ONT
2 stops11h 35m
Southwest
Deal found 4/22![Southwest logo]()
$441
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/246:30 pm
ONT
- BOS
1 stop8h 28m
United Airlines
Thu 7/23:54 pm
BOS
- ONT
1 stop9h 01m
United Airlines
Deal found 4/26![United Airlines logo]()
$488
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/71:40 pm
ONT
- BOS
1 stop7h 19m
United Airlines
Sun 5/106:00 am
BOS
- ONT
1 stop9h 22m
United Airlines
Deal found 4/25![United Airlines logo]()
$488
This Southwest deal was found by Cheapflights users on 4/22. 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 6/177:20 pm
ONT
- MHT
2 stops9h 50m
Southwest
Wed 6/246:55 am
MHT
- ONT
2 stops8h 45m
Southwest
Deal found 4/22![Southwest logo]()
$454
This American Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/47:13 pm
ONT
- MHT
2 stops13h 20m
American Airlines
Mon 6/85:10 pm
MHT
- ONT
1 stop8h 26m
American Airlines
Deal found 4/26![American Airlines logo]()
$556
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Mon 5/1111:59 pm
ONT
- ORH
2 stops11h 15m
American Airlines
Wed 5/202:39 pm
ORH
- ONT
2 stops12h 07m
American Airlines
Deal found 4/22![American Airlines logo]()
$562
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/299:45 am
ONT
- PWM
2 stops11h 20m
Southwest
Tue 7/75:30 am
PWM
- ONT
1 stop9h 35m
Southwest
Deal found 4/25![Southwest logo]()
$479
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Mon 5/1111:59 pm
ONT
- ORH
2 stops11h 15m
American Airlines
Mon 5/182:39 pm
ORH
- ONT
2 stops10h 20m
American Airlines
Deal found 4/22![American Airlines logo]()
$562
This Southwest deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/48:35 am
ONT
- PWM
2 stops12h 30m
Southwest
Mon 6/83:10 pm
PWM
- ONT
2 stops11h 20m
Southwest
Deal found 4/26![Southwest logo]()
$480
This United Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/66:30 am
ONT
- MHT
2 stops14h 29m
United Airlines
Sat 6/132:37 pm
MHT
- ONT
2 stops11h 09m
United Airlines
Deal found 4/24![United Airlines logo]()
$593
Last-minute flights from Ontario to New HampshireDiscover last-minute flight deals from Ontario to New Hampshire. Data last updated April 27, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to New Hampshire. Data last updated April 27, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 4/22. 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.
Wed 5/66:00 am
ONT
- BOS
1 stop7h 34m
Delta
Sat 5/96:10 am
BOS
- ONT
1 stop9h 09m
Delta
Deal found 4/22![Delta logo]()
$317
This American Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:35 pm
ONT
- BOS
1 stop7h 25m
American Airlines
Mon 5/115:54 pm
BOS
- ONT
1 stop8h 52m
American Airlines
Deal found 4/24![American Airlines logo]()
$328
This American Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/910:59 am
ONT
- ORH
2 stops24h 15m
American Airlines
Wed 5/132:39 pm
ORH
- ONT
2 stops21h 00m
American Airlines
Deal found 4/24![American Airlines logo]()
$327
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:59 pm
ONT
- BOS
1 stop10h 24m
United Airlines
Wed 5/134:35 pm
BOS
- ONT
1 stop9h 00m
United Airlines
Deal found 4/26![United Airlines logo]()
$292
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Tue 5/1212:19 pm
ONT
- BOS
1 stop9h 05m
American Airlines
Wed 5/276:00 am
BOS
- ONT
1 stop8h 50m
American Airlines
Deal found 4/23![American Airlines logo]()
$277
This United Airlines deal was found by Cheapflights users on 4/23. 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 5/126:00 am
ONT
- BOS
1 stop8h 07m
United Airlines
Wed 5/279:50 am
BOS
- ONT
2 stops10h 38m
United Airlines
Deal found 4/23![United Airlines logo]()
$288
This United Airlines deal was found by Cheapflights users on 4/23. 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 5/125:00 am
ONT
- PWM
1 stop7h 41m
United Airlines
Wed 5/274:56 pm
PWM
- ONT
1 stop8h 55m
United Airlines
Deal found 4/23![United Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 4/23. 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.
Tue 5/1212:08 pm
ONT
- PWM
1 stop8h 04m
Delta
Wed 5/272:05 pm
PWM
- ONT
2 stops12h 29m
Delta
Deal found 4/23![Delta logo]()
$322
This Delta deal was found by Cheapflights users on 4/22. 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 5/284:57 pm
ONT
- BOS
1 stop10h 23m
Delta
Wed 6/36:45 pm
BOS
- ONT
1 stop7h 49m
Delta
Deal found 4/22![Delta logo]()
$297
This Delta deal was found by Cheapflights users on 4/22. 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 5/284:57 pm
ONT
- BOS
1 stop10h 23m
Delta
Thu 6/45:35 am
BOS
- ONT
1 stop8h 22m
Delta
Deal found 4/22![Delta logo]()
$318
This American Airlines deal was found by Cheapflights users on 4/22. 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 6/68:00 am
BOS
- ONT
1 stop8h 28m
American Airlines
Deal found 4/22![American Airlines logo]()
$310
This American Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:59 pm
ONT
- BOS
1 stop8h 50m
American Airlines
Fri 6/54:06 pm
BOS
- ONT
1 stop10h 53m
American Airlines
Deal found 4/22![American Airlines logo]()
$253
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 April 27, 2026.
Search for one-way flight options from Ontario to New Hampshire. Find affordable one-way fares based on user searches. Data last updated April 27, 2026.
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Tue 5/1212:19 pm
ONT
- BOS
1 stop9h 05m
American Airlines
Deal found 4/23![American Airlines logo]()
$99
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Mon 5/117:35 pm
ONT
- BOS
1 stop7h 25m
American Airlines
Deal found 4/23![American Airlines logo]()
$118
This United Airlines deal was found by Cheapflights users on 4/23. 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 6/96:00 am
ONT
- BOS
1 stop8h 04m
United Airlines
Deal found 4/23![United Airlines logo]()
$119
This Southwest deal was found by Cheapflights users on 4/22. 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.
Mon 6/811:55 pm
ONT
- BOS
1 stop9h 20m
Southwest
Deal found 4/22![Southwest logo]()
$134
This American Airlines deal was found by Cheapflights users on 4/22. 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 6/57:12 pm
ONT
- BOS
2 stops10h 29m
American Airlines
Deal found 4/22![American Airlines logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/188:06 pm
ONT
- BOS
2 stops26h 18m
Frontier
Deal found 4/24![Frontier logo]()
$142
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:59 pm
ONT
- BOS
1 stop10h 24m
United Airlines
Deal found 4/26![United Airlines logo]()
$144
This American Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/77:14 pm
ONT
- BOS
1 stop7h 31m
American Airlines
Deal found 4/22![American Airlines logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:00 am
ONT
- BOS
2 stops50h 06m
Frontier
Deal found 4/24![Frontier logo]()
$151
This Alaska Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/25:57 pm
ONT
- BOS
1 stop9h 27m
Alaska Airlines
Deal found 4/24![Alaska Airlines logo]()
$155
This Delta deal was found by Cheapflights users on 4/23. 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 5/1110:00 pm
ONT
- ORH
2 stops14h 33m
Delta
Deal found 4/23![Delta logo]()
$164
This Delta deal was found by Cheapflights users on 4/23. 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.
Tue 5/1212:08 pm
ONT
- PWM
1 stop8h 04m
Delta
Deal found 4/23![Delta logo]()
$169
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 April 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $253 (American Airlines) |
One-way from | $99 (American Airlines) |
Popular in | April |
Cheapest in | January |
Average price | $462 |
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 April 27, 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
OntarioWorcester
ONT - ORH
ONTORH
Ontario
Sat 5/9
10:59 am-2:14 pm
2 stops24h 15m
Worcester
Wed 5/13
2:39 pm-8:39 am
2 stops21h 00m
$327
OntarioWorcester
ONT - ORH
ONTORH
Ontario
Fri 9/11
11:59 pm-9:07 pm
2 stops18h 08m
Worcester
Mon 9/14
7:33 pm-11:48 am
2 stops19h 15m
$343
OntarioBoston
ONT - BOS
ONTBOS
Ontario
Tue 6/16
5:59 pm-7:35 am
1 stop10h 36m
Boston Logan Intl
Sun 7/12
5:30 am-10:38 am
1 stop8h 08m
$358
OntarioPortland
ONT - PWM
ONTPWM
Ontario
Mon 8/10
11:50 pm-12:17 pm
1 stop9h 27m
Portland
Tue 8/18
1:17 pm-10:35 pm
1 stop12h 18m
$366
OntarioBoston
ONT - BOS
ONTBOS
Ontario
Thu 7/9
12:50 pm-1:00 am
1 stop9h 10m
Boston Logan Intl
Mon 7/13
3:55 pm-10:25 pm
1 stop9h 30m
$374
Quickest round-trip
OntarioBoston
ONT - BOS
ONTBOS
Ontario
Sat 5/2
6:00 am-4:34 pm
1 stop7h 34m
Boston Logan Intl
Tue 5/12
6:45 pm-11:34 pm
1 stop7h 49m
$378
OntarioBoston
ONT - BOS
ONTBOS
Ontario
Fri 6/5
12:50 pm-1:00 am
1 stop9h 10m
Boston Logan Intl
Sun 6/7
7:05 pm-12:25 am
1 stop8h 20m
$389
OntarioBoston
ONT - BOS
ONTBOS
Ontario
Tue 6/2
5:57 pm-6:24 am
1 stop9h 27m
Boston Logan Intl
Thu 6/11
7:03 am-4:30 pm
1 stop12h 27m
$393
OntarioManchester
ONT - MHT
ONTMHT
Ontario
Thu 6/4
11:55 pm-10:50 am
1 stop7h 55m
Manchester
Mon 6/8
5:10 pm-10:25 pm
1 stop8h 15m
$399
OntarioPortland
ONT - PWM
ONTPWM
Ontario
Tue 8/25
7:00 am-5:44 pm
1 stop7h 44m
Portland
Wed 8/26
5:15 am-6:19 pm
2 stops16h 04m
$404
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-ORH
ONT-MHT
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-ORH
ONT-MHT
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 April 27, 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
Entertainment
7.5
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Entertainment
7.5
Overall
8.0
Crew
8.6
Comfort
8.0
Food
7.0
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 April 27, 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 April 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$436 | Average$537 | FlexibilityNo cancel fee | On-time63% |