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Ontario

$126+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — ONT
Apr 13 — Apr 201
Mon 4/13
Mon 4/20
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 March 14, 2026.

This SmartFares deal was found by Cheapflights users on 3/13. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:00 am
BOS
-
ONT
1 stop10h 32m
Alaska Airlines
Tue 5/510:39 am
ONT
-
BOS
1 stop10h 20m
Alaska Airlines
Deal found 3/13$248
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:10 am
BOS
-
ONT
1 stop9h 05m
Southwest
Mon 5/49:55 pm
ONT
-
BOS
1 stop7h 20m
Southwest
Deal found 3/13$251
This KAYAK deal was found by Cheapflights users on 3/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/294:45 pm
BOS
-
ONT
1 stop30h 20m
Southwest
Thu 4/3011:55 pm
ONT
-
BOS
1 stop8h 00m
Southwest
Deal found 3/9$252
This American Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:13 am
BOS
-
ONT
1 stop8h 21m
American Airlines
Fri 5/87:35 pm
ONT
-
BOS
1 stop7h 25m
American Airlines
Deal found 3/11$253
This American Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/318:26 am
BOS
-
ONT
2 stops10h 56m
American Airlines
Sat 4/1112:19 pm
ONT
-
BOS
1 stop9h 05m
American Airlines
Deal found 3/10$256
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:00 am
BOS
-
ONT
1 stop10h 30m
Alaska Airlines
Mon 5/1110:39 am
ONT
-
BOS
1 stop10h 20m
Alaska Airlines
Deal found 3/13$266
This Southwest deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/235:15 am
BOS
-
ONT
1 stop7h 35m
Southwest
Fri 6/512:50 pm
ONT
-
BOS
1 stop9h 10m
Southwest
Deal found 3/11$277
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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.
Thu 9/107:20 am
BOS
-
ONT
1 stop10h 27m
Alaska Airlines
Tue 9/226:58 pm
ONT
-
BOS
1 stop10h 04m
Alaska Airlines
Deal found 3/9$279
This SmartFares deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/304:33 pm
BOS
-
ONT
1 stop10h 26m
Alaska Airlines
Wed 5/610:39 am
ONT
-
BOS
1 stop10h 20m
Alaska Airlines
Deal found 3/10$280
This Southwest deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:30 am
MHT
-
ONT
1 stop8h 45m
Southwest
Sun 5/109:55 pm
ONT
-
MHT
1 stop7h 35m
Southwest
Deal found 3/12$297
This American Airlines deal was found by Cheapflights users on 3/12. 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 5/56:46 am
MHT
-
ONT
2 stops14h 38m
American Airlines
Sun 5/107:35 pm
ONT
-
MHT
2 stops13h 07m
American Airlines
Deal found 3/12$347
This American Airlines deal was found by Cheapflights users on 3/9. 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 4/281:18 pm
PWM
-
ONT
1 stop10h 09m
American Airlines
Tue 6/211:59 pm
ONT
-
PWM
2 stops9h 41m
American Airlines
Deal found 3/9$361

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 March 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$248
(SmartFares)

One-way from

$126
(Southwest)

Popular in

April

Cheapest in

January

Average price

$393
Provider with most accurate pricing for Boston Logan Intl-Los Angeles Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Los Angeles 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. 5% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 14, 2026.
Use the filters below to find and compare flights from New Hampshire to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 5/27

9:15 am-4:20 pm

1 stop10h 05m

Ontario

Sat 5/30

9:55 pm-8:30 am

1 stop7h 35m

$251

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 4/22

9:15 am-4:20 pm

1 stop10h 05m

Ontario

Wed 4/29

1:55 pm-12:05 am

1 stop7h 10m

$279

ManchesterOntario

MHT - ONT

MHTONT

Manchester

Tue 5/5

7:30 am-1:15 pm

1 stop8h 45m

Ontario

Sun 5/10

7:40 pm-8:30 am

2 stops9h 50m

$302

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 5/27

6:10 am-12:19 pm

1 stop9h 09m

Ontario

Sat 5/30

5:55 pm-6:20 am

1 stop9h 25m

$317

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Tue 4/28

7:00 am-2:32 pm

1 stop10h 32m

Ontario

Sun 5/10

10:39 am-11:59 pm

1 stop10h 20m

$333

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sat 5/9

6:00 am-12:22 pm

1 stop9h 22m

Ontario

Mon 5/11

6:59 pm-8:23 am

1 stop10h 24m

$346

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 5/14

6:00 am-12:22 pm

1 stop9h 22m

Ontario

Mon 5/18

6:59 pm-8:23 am

1 stop10h 24m

$346

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 4/2

5:30 am-12:20 pm

1 stop9h 50m

Ontario

Thu 4/9

1:27 pm-1:05 am

1 stop8h 38m

$351

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 5/28

6:21 am-8:42 pm

2 stops17h 21m

Ontario

Mon 6/1

6:30 pm-5:58 am

1 stop8h 28m

$356

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 5/27

9:30 am-8:42 pm

2 stops14h 12m

Ontario

Sat 5/30

6:30 am-7:30 pm

1 stop10h 00m

$356

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/8

Showing 1-10 of 60 resultsSorted by cheapest first
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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 9h 09m. 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 March 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$346Average$426FlexibilityNo cancel feeOn-time63%

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