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Ontario

$96+ 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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — ONT
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$271
(JetBlue Airways)

One-way from

$96
(Frontier)

Popular in

June

Cheapest in

September

Average price

$372
Provider with most accurate pricing for Boston Logan Intl-Los Angeles flight deals.
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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. 11% potential increase in price ($48 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This JetBlue deal was found by Cheapflights users on 2/20. 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.
Sun 5/412:15 pmBOS - ONT
1 stop12h 07mJetBlue
Thu 5/810:40 pmONT - BOS
1 stop8h 09mJetBlue
Deal found 2/20$271
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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 3/156:24 pmBOS - ONT
1 stop19h 38mAlaska Airlines
Wed 3/196:00 amONT - BOS
1 stop22h 52mAlaska Airlines
Deal found 2/20$272
This Delta deal was found by Cheapflights users on 2/20. 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 3/224:25 pmBOS - ONT
1 stop8h 22mDelta
Wed 3/2611:42 amONT - BOS
1 stop9h 13mDelta
Deal found 2/20$300
This Southwest deal was found by Cheapflights users on 2/20. 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 4/95:00 amBOS - ONT
1 stop7h 45mSouthwest
Sun 4/139:30 pmONT - BOS
1 stop14h 05mSouthwest
Deal found 2/20$328
This American Airlines deal was found by Cheapflights users on 2/20. 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 8/136:28 pmBOS - ONT
1 stop8h 01mAmerican Airlines
Wed 8/2710:28 amONT - BOS
1 stop9h 47mAmerican Airlines
Deal found 2/20$329
This Southwest deal was found by Cheapflights users on 2/20. 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 4/12:25 pmMHT - ONT
1 stop10h 40mSouthwest
Tue 4/156:20 pmONT - MHT
2 stops12h 05mSouthwest
Deal found 2/20$348
This United Airlines deal was found by Cheapflights users on 2/20. 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 7/16:00 amBOS - ONT
1 stop9h 22mUnited Airlines
Sun 7/66:32 pmONT - BOS
1 stop8h 28mUnited Airlines
Deal found 2/20$378
This JetBlue Airways deal was found by Cheapflights users on 2/19. 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 Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/303:20 pmPWM - ONT
1 stop9h 02mJetBlue
Fri 6/610:40 pmONT - PWM
1 stop11h 40mJetBlue
Deal found 2/19$407
This American Airlines deal was found by Cheapflights users on 2/20. 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 4/102:28 pmMHT - ONT
1 stop9h 31mAmerican Airlines
Wed 4/1611:59 pmONT - MHT
2 stops13h 31mAmerican Airlines
Deal found 2/20$415
This American Airlines deal was found by Cheapflights users on 2/19. 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 10/2711:16 amPWM - ONT
2 stops9h 37mAmerican Airlines
Sat 11/111:59 pmONT - PWM
2 stops11h 08mAmerican Airlines
Deal found 2/19$473
This Southwest deal was found by Cheapflights users on 2/19. 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 10/275:15 pmPWM - ONT
1 stop8h 35mSouthwest
Sat 11/17:45 amONT - PWM
1 stop9h 50mSouthwest
Deal found 2/19$487
This United Airlines deal was found by Cheapflights users on 2/18. 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 7/43:26 pmPWM - ONT
1 stop8h 28mUnited Airlines
Tue 7/87:00 amONT - PWM
1 stop12h 03mUnited Airlines
Deal found 2/18$546

Find flights from New Hampshire to Ontario within your budget

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 February 20, 2025.

Fly from

New Hampshire

Fly to

Ontario

Route

Depart

Return

Price

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sun 5/4

12:15 pm-9:22 pm

1 stop12h 07m

Ontario

Thu 5/8

10:40 pm-9:49 am

1 stop8h 09m

$271

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sat 3/15

6:24 pm-11:02 am

1 stop19h 38m

Ontario

Wed 3/19

6:00 am-7:52 am

1 stop22h 52m

$272

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sat 3/22

4:25 pm-9:47 pm

1 stop8h 22m

Ontario

Wed 3/26

11:42 am-11:55 pm

1 stop9h 13m

$300

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 4/9

5:00 am-9:45 am

1 stop7h 45m

Ontario

Sun 4/13

9:30 pm-2:35 pm

1 stop14h 05m

$328

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Tue 3/11

2:09 pm-10:27 pm

1 stop11h 18m

Ontario

Sat 3/15

6:10 am-11:54 pm

1 stop14h 44m

$345

ManchesterOntario

MHT - ONT

MHTONT

Manchester

Tue 4/1

2:25 pm-10:05 pm

1 stop10h 40m

Ontario

Tue 4/15

6:20 pm-9:25 am

2 stops12h 05m

$348

PortlandOntario

PWM - ONT

PWMONT

Portland

Fri 5/30

3:20 pm-9:22 pm

1 stop9h 02m

Ontario

Fri 6/6

10:40 pm-1:20 pm

1 stop11h 40m

$407

ManchesterOntario

MHT - ONT

MHTONT

Manchester

Thu 4/10

2:28 pm-8:59 pm

1 stop9h 31m

Ontario

Wed 4/16

11:59 pm-4:30 pm

2 stops13h 31m

$415

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Tue 4/1

10:48 am-8:42 pm

2 stops12h 54m

Ontario

Tue 4/8

5:00 am-5:22 pm

2 stops9h 22m

$416

PortlandOntario

PWM - ONT

PWMONT

Portland

Fri 7/4

3:26 pm-8:54 pm

1 stop8h 28m

Ontario

Tue 7/8

7:00 am-10:03 pm

1 stop12h 03m

$546

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 33 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.

Travel insights for flights from New Hampshire to Ontario

Get recent, data-driven insights about flights from New Hampshire to Ontario including ideal travel times, pricing trends, and more.

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 $315). 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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated February 20, 2025.
Read through reviews of airlines operating flights from New Hampshire to Ontario, such as Southwest, Alaska Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,697 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

JetBlue
7.4
Good
3,070 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

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 Frontier ($96), JetBlue ($136), and Alaska Airlines ($137).

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

    Most travelers choose Boston Logan Intl - Ontario, Manchester - Ontario or Portland - 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 $315). 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$355Average$816FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$357Average$456FlexibilityNo cancel feeOn-time63%
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