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Ontario

$138+ Cheap flights from New Hampshire to Ontario (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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — ONT
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from New Hampshire to Ontario

Keep the following information in mind while searching for New Hampshire to Ontario flight deals. Data was last updated August 14, 2025.

Round-trip from

$234
(Frontier)

One-way from

$138
(Alaska Airlines)

Popular in

December

Cheapest in

September

Average price

$363
From New Hampshire to Ontario
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One-way flight from New Hampshire to Ontario
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Highest demand for flights based on searches. 3% potential increase in price ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from New Hampshire to Ontario

Cheapest flights from New Hampshire to Ontario
Explore the most affordable flight options available from New Hampshire to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Frontier deal was found by Cheapflights users on 8/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/712:49 pmBOS - ONT
2 stops14h 01mFrontier
Sun 11/97:35 pmONT - BOS
2 stops10h 40mFrontier
Deal found 8/13$234
This Frontier deal was found by Cheapflights users on 8/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2412:49 pmBOS - ONT
2 stops14h 01mFrontier
Sun 11/27:44 pmONT - BOS
2 stops10h 16mFrontier
Deal found 8/14$262
This Rumbo deal was found by Cheapflights users on 8/12. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/42:45 pmBOS - ONT
1 stop9h 44mJetBlue
Wed 9/1010:56 pmONT - BOS
1 stop7h 38mJetBlue
Deal found 8/12$263
This Rumbo deal was found by Cheapflights users on 8/13. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/42:45 pmBOS - ONT
1 stop9h 44mJetBlue
Sat 9/1310:56 pmONT - BOS
1 stop7h 38mJetBlue
Deal found 8/13$264
This United Airlines deal was found by Cheapflights users on 8/12. 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.
Tue 9/93:30 pmBOS - ONT
1 stop8h 13mUnited Airlines
Tue 9/167:00 amONT - BOS
1 stop9h 19mUnited Airlines
Deal found 8/12$277
This Frontier deal was found by Cheapflights users on 8/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1110:53 amBOS - ONT
2 stops15h 45mFrontier
Fri 9/1212:28 pmONT - BOS
2 stops16h 43mFrontier
Deal found 8/14$278
This Frontier deal was found by Cheapflights users on 8/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1210:53 amBOS - ONT
2 stops15h 45mFrontier
Sun 9/143:43 pmONT - BOS
2 stops15h 15mFrontier
Deal found 8/13$283
This American Airlines deal was found by Cheapflights users on 8/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:00 amBOS - ONT
1 stop10h 53mAmerican Airlines
Tue 9/168:15 amONT - BOS
1 stop10h 39mAmerican Airlines
Deal found 8/12$285
This American Airlines deal was found by Cheapflights users on 8/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/98:35 amBOS - ONT
2 stops10h 30mAmerican Airlines
Tue 9/1610:53 amONT - BOS
2 stops9h 51mAmerican Airlines
Deal found 8/12$287
This JetBlue deal was found by Cheapflights users on 8/13. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/22:17 pmPWM - ONT
1 stop10h 12mJetBlue
Mon 10/610:56 pmONT - PWM
1 stop11h 26mJetBlue
Deal found 8/13$291
This Southwest deal was found by Cheapflights users on 8/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/115:50 amPWM - ONT
1 stop8h 45mSouthwest
Thu 9/1812:45 pmONT - PWM
1 stop7h 35mSouthwest
Deal found 8/14$319
This lastminute.com deal was found by Cheapflights users on 8/14. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/42:17 pmPWM - ONT
1 stop10h 12mJetBlue
Wed 9/1010:56 pmONT - PWM
1 stop20h 11mJetBlue
Deal found 8/14$327

Cheapflights Fare Finder

 
Customize your flight search to find flights from New Hampshire 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 August 14, 2025.
Use the filters below to find and compare flights from New Hampshire to Ontario that are best for you.

Fly from

New Hampshire

Fly to

Ontario

Route

Depart

Return

Price

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Fri 11/7

12:49 pm-11:50 pm

2 stops14h 01m

Ontario

Sun 11/9

7:35 pm-9:15 am

2 stops10h 40m

$234

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Fri 10/24

12:49 pm-11:50 pm

2 stops14h 01m

Ontario

Sun 11/2

7:44 pm-9:00 am

2 stops10h 16m

$262

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Fri 10/31

12:49 pm-11:50 pm

2 stops14h 01m

Ontario

Sun 11/2

7:35 pm-9:15 am

2 stops10h 40m

$262

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 9/4

2:45 pm-9:29 pm

1 stop9h 44m

Ontario

Wed 9/10

10:56 pm-9:34 am

1 stop7h 38m

$263

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sat 9/27

2:45 pm-9:29 pm

1 stop9h 44m

Ontario

Wed 10/1

10:56 pm-9:34 am

1 stop7h 38m

$264

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Fri 9/5

2:45 pm-9:29 pm

1 stop9h 44m

Ontario

Sat 9/13

10:56 pm-9:34 am

1 stop7h 38m

$264

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 9/4

2:45 pm-9:29 pm

1 stop9h 44m

Ontario

Sat 9/13

10:56 pm-9:34 am

1 stop7h 38m

$264

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Mon 9/8

12:59 pm-8:56 pm

2 stops10h 57m

Ontario

Sun 9/28

3:43 pm-9:58 am

2 stops15h 15m

$264

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 9/18

10:13 am-6:35 pm

2 stops11h 22m

Ontario

Sun 9/21

3:43 pm-9:58 am

2 stops15h 15m

$265

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Tue 9/9

3:30 pm-8:43 pm

1 stop8h 13m

Ontario

Tue 9/16

7:00 am-7:19 pm

1 stop9h 19m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 56 results
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Best time to book a flight from New Hampshire to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from New Hampshire with our price prediction graph.
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 New Hampshire to Ontario

What is the cheapest month to book a flight from New Hampshire to Ontario?

Currently, August is the cheapest month in which you can book a flight from New Hampshire to Ontario (average of $246). Flying from New Hampshire to Ontario in March is currently the most expensive (average of $328). 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.

Related info for your journey

Find useful and relevant information for your journey from New Hampshire to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from New Hampshire?

    Most people fly into Ontario (ONT) if they book a flight to Ontario from New Hampshire. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • What are the cheapest airlines to fly from New Hampshire to Ontario one-way?

    The cheapest airlines for a one-way flight from New Hampshire to Ontario are Alaska Airlines ($138), American Airlines ($139), and JetBlue ($156).

  • What are the most popular routes from New Hampshire to Ontario?

    Most travelers choose Boston Logan Intl - Ontario, Portland - Ontario or Manchester - Ontario when deciding on the best route from New Hampshire to Ontario.

  • Can I find deals for flights from New Hampshire to Ontario that include hotel bookings?

    Yes. In addition to deals on New Hampshire to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from New Hampshire to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from New Hampshire to Ontario.

  • Can I find deals for business class flights from New Hampshire to Ontario?

    Yes. Cheapflights offers flight deals from New Hampshire to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from New Hampshire to Ontario?

    Currently, August is the cheapest month in which you can book a flight from New Hampshire to Ontario (average of $246). Flying from New Hampshire to Ontario in March is currently the most expensive (average of $328). 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.

See more FAQs

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Alternative routes for New Hampshire to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from New Hampshire to Ontario

Discover the top 2 airlines that operate flights from New Hampshire 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$342Average$526FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$346Average$426FlexibilityNo cancel feeOn-time63%

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