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Ontario

$112+ 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 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — ONT
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap 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 January 27, 2026.

This Lucky2Go deal was found by Cheapflights users on 1/26. 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 Lucky2Go is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:00 am
BOS
-
ONT
2 stops20h 59m
Frontier
Wed 3/48:40 am
ONT
-
BOS
2 stops13h 33m
Frontier
Deal found 1/26$244
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Sat 5/212:30 pm
BOS
-
ONT
1 stop8h 31m
United Airlines
Mon 5/46:59 pm
ONT
-
BOS
1 stop10h 24m
United Airlines
Deal found 1/26$255
This American Airlines deal was found by Cheapflights users on 1/26. 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.
Fri 2/202:06 pm
BOS
-
ONT
1 stop10h 18m
American Airlines
Mon 2/2311:58 pm
ONT
-
BOS
1 stop8h 56m
American Airlines
Deal found 1/26$259
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Thu 2/2612:26 pm
BOS
-
ONT
1 stop11h 58m
American Airlines
Mon 3/211:58 pm
ONT
-
BOS
2 stops9h 31m
American Airlines
Deal found 1/27$264
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Tue 3/36:00 am
BOS
-
ONT
2 stops10h 49m
American Airlines
Tue 3/1011:58 pm
ONT
-
BOS
2 stops9h 18m
American Airlines
Deal found 1/27$269
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Mon 3/26:00 am
BOS
-
ONT
1 stop9h 38m
United Airlines
Fri 3/66:37 pm
ONT
-
BOS
1 stop10h 21m
United Airlines
Deal found 1/25$280
This United Airlines deal was found by Cheapflights users on 1/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:00 am
BOS
-
ONT
1 stop9h 22m
United Airlines
Mon 5/46:59 pm
ONT
-
BOS
1 stop10h 24m
United Airlines
Deal found 1/27$288
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Thu 3/195:45 am
BOS
-
ONT
1 stop9h 33m
United Airlines
Mon 3/2311:59 pm
ONT
-
BOS
1 stop7h 51m
United Airlines
Deal found 1/26$291
This JetBlue deal was found by Cheapflights users on 1/27. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/152:55 pm
BOS
-
ONT
1 stop10h 14m
JetBlue
Mon 5/1811:25 pm
ONT
-
BOS
1 stop8h 13m
JetBlue
Deal found 1/27$293
This United Airlines deal was found by Cheapflights users on 1/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/256:00 am
BOS
-
ONT
2 stops9h 43m
United Airlines
Wed 3/45:00 am
ONT
-
BOS
2 stops10h 41m
United Airlines
Deal found 1/27$294
This Delta deal was found by Cheapflights users on 1/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:37 pm
BOS
-
ONT
1 stop8h 12m
Delta
Mon 3/910:25 pm
ONT
-
BOS
1 stop8h 39m
Delta
Deal found 1/27$297
This Delta deal was found by Cheapflights users on 1/26. 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 8/201:35 pm
PWM
-
ONT
1 stop11h 21m
Delta
Sun 8/2310:59 pm
ONT
-
PWM
1 stop10h 23m
Delta
Deal found 1/26$297

Find 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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$244
(Lucky2Go)

One-way from

$112
(Trip.com)

Popular in

April

Cheapest in

January

Average price

$282
Provider with most accurate pricing for Boston Logan Intl-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Los Angeles flights.
Search Deals
From New Hampshire to Ontario
Search Deals
One-way flight from New Hampshire to Ontario
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 27, 2026.
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

Tue 3/3

9:02 am-10:44 pm

1 stop16h 42m

Ontario

Tue 3/10

12:02 pm-11:59 pm

1 stop8h 57m

$259

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 2/19

4:36 pm-11:52 pm

1 stop10h 16m

Ontario

Thu 2/26

6:14 am-11:59 pm

1 stop14h 45m

$259

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 3/12

4:36 pm-11:52 pm

1 stop10h 16m

Ontario

Tue 3/17

6:14 am-11:59 pm

1 stop14h 45m

$259

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Mon 3/9

4:30 pm-10:18 pm

1 stop8h 48m

Ontario

Mon 3/16

11:59 pm-12:56 pm

2 stops9h 57m

$264

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 3/12

5:45 am-12:18 pm

1 stop9h 33m

Ontario

Tue 3/17

11:59 pm-12:56 pm

2 stops9h 57m

$264

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Mon 3/9

6:44 pm-11:51 pm

1 stop8h 07m

Ontario

Sat 3/14

5:53 pm-6:49 am

1 stop9h 56m

$297

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 3/5

4:36 pm-11:52 pm

1 stop10h 16m

Ontario

Tue 3/10

12:02 pm-11:59 pm

1 stop8h 57m

$298

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 2/26

4:36 pm-11:52 pm

1 stop10h 16m

Ontario

Mon 4/6

7:00 am-5:53 am

1 stop19h 53m

$299

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 2/19

6:10 am-12:07 pm

1 stop8h 57m

Ontario

Tue 2/24

10:20 pm-10:02 am

1 stop8h 42m

$318

PortlandOntario

PWM - ONT

PWMONT

Portland

Sat 4/25

1:12 pm-9:00 pm

1 stop10h 48m

Ontario

Wed 4/29

12:49 pm-11:23 pm

1 stop7h 34m

$328

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 60 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 $115). Flying from New Hampshire to Ontario in December is currently the most expensive (average of $439). 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.

  • How long is the flight from New Hampshire to Ontario?

    Departing from New Hampshire to Ontario will take you 8h 48m. New Hampshire and Ontario are separated by a distance of 2559 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $115). Flying from New Hampshire to Ontario in December is currently the most expensive (average of $439). 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 airline flying from New Hampshire to Ontario

Discover the top airline 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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$346Average$426FlexibilityNo cancel feeOn-time63%

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