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New Hampshire

$89+ 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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MHT
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap 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 July 3, 2025.

Round-trip from

$256
(Southwest)

One-way from

$89
(Priceline)

Popular in

December

Cheapest in

January

Average price

$463
From Ontario to New Hampshire
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One-way flight from Ontario to New Hampshire
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High demand for flights, 0% potential price rise
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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 July 2025
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Find flight deals from Ontario to New Hampshire

Cheapest flights from Ontario to New Hampshire
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 July 3, 2025.

This Southwest deal was found by Cheapflights users on 7/1. 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 9/1610:55 amONT - PWM
1 stop8h 30mSouthwest
Sat 9/208:15 amPWM - ONT
1 stop13h 00mSouthwest
Deal found 7/1$256
This Frontier deal was found by Cheapflights users on 6/30. 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 8/78:09 pmONT - BOS
1 stop11h 49mFrontier
Thu 8/1412:57 pmBOS - ONT
2 stops13h 53mFrontier
Deal found 6/30$264
This Trip.com deal was found by Cheapflights users on 7/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1011:59 pmONT - BOS
1 stop9h 16mJetBlue
Fri 8/151:59 pmBOS - ONT
1 stop11h 11mJetBlue
Deal found 7/3$289
This JetBlue deal was found by Cheapflights users on 7/2. 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 8/1111:59 pmONT - PWM
1 stop10h 24mJetBlue
Tue 8/192:19 pmPWM - ONT
1 stop10h 40mJetBlue
Deal found 7/2$291
This American Airlines deal was found by Cheapflights users on 6/30. 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 9/77:16 pmONT - PWM
2 stops13h 30mAmerican Airlines
Fri 9/121:57 pmPWM - ONT
1 stop10h 27mAmerican Airlines
Deal found 6/30$302
This Delta deal was found by Cheapflights users on 7/3. 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 8/3011:45 amONT - BOS
1 stop8h 29mDelta
Fri 9/55:20 pmBOS - ONT
1 stop8h 20mDelta
Deal found 7/3$305
This Alaska Airlines deal was found by Cheapflights users on 7/3. 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.
Sun 8/315:49 pmONT - BOS
1 stop9h 11mAlaska Airlines
Fri 9/55:37 pmBOS - ONT
1 stop9h 17mAlaska Airlines
Deal found 7/3$312
This American Airlines deal was found by Cheapflights users on 7/1. 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 8/1512:47 pmONT - BOS
1 stop7h 29mAmerican Airlines
Fri 8/225:55 amBOS - ONT
1 stop8h 57mAmerican Airlines
Deal found 7/1$314
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/151:34 pmONT - BOS
1 stop7h 21mUnited Airlines
Sat 8/236:09 amBOS - ONT
2 stops9h 23mUnited Airlines
Deal found 7/1$318
This Southwest deal was found by Cheapflights users on 7/2. 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 10/712:00 pmONT - BOS
1 stop7h 35mSouthwest
Sat 10/115:20 amBOS - ONT
1 stop8h 20mSouthwest
Deal found 7/2$325
This Delta deal was found by Cheapflights users on 7/2. 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 8/3011:45 amONT - PWM
1 stop9h 18mDelta
Thu 9/41:34 pmPWM - ONT
1 stop8h 37mDelta
Deal found 7/2$327
This Southwest deal was found by Cheapflights users on 7/2. 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 8/2512:45 pmONT - MHT
1 stop7h 40mSouthwest
Wed 8/275:30 amMHT - ONT
1 stop9h 05mSouthwest
Deal found 7/2$343

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 July 3, 2025.
Use the filters below to find and compare flights from Ontario to New Hampshire that are best for you.

Fly from

Ontario

Fly to

New Hampshire

Route

Depart

Return

Price

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Tue 9/16

10:55 am-10:25 pm

1 stop8h 30m

Portland

Sat 9/20

8:15 am-6:15 pm

1 stop13h 00m

$256

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 8/7

8:09 pm-10:58 am

1 stop11h 49m

Boston Logan Intl

Thu 8/14

12:57 pm-11:50 pm

2 stops13h 53m

$264

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Sun 8/10

11:59 pm-12:15 pm

1 stop9h 16m

Boston Logan Intl

Fri 8/15

1:59 pm-10:10 pm

1 stop11h 11m

$289

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Mon 8/11

11:59 pm-1:23 pm

1 stop10h 24m

Portland

Tue 8/19

2:19 pm-9:59 pm

1 stop10h 40m

$291

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Sun 9/7

7:16 pm-11:46 am

2 stops13h 30m

Portland

Fri 9/12

1:57 pm-9:24 pm

1 stop10h 27m

$302

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Sat 8/30

11:45 am-11:14 pm

1 stop8h 29m

Boston Logan Intl

Wed 9/3

5:20 pm-10:40 pm

1 stop8h 20m

$305

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Sun 8/31

5:49 pm-6:00 am

1 stop9h 11m

Boston Logan Intl

Fri 9/5

5:37 pm-11:54 pm

1 stop9h 17m

$312

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Fri 8/15

12:47 pm-11:16 pm

1 stop7h 29m

Boston Logan Intl

Fri 8/22

5:55 am-11:52 am

1 stop8h 57m

$314

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Fri 8/15

1:34 pm-11:55 pm

1 stop7h 21m

Boston Logan Intl

Sat 8/23

6:09 am-12:32 pm

2 stops9h 23m

$318

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 10/7

12:00 pm-10:35 pm

1 stop7h 35m

Boston Logan Intl

Sat 10/11

5:20 am-10:40 am

1 stop8h 20m

$325

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 32 results
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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.
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

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

Currently, January is the cheapest month in which you can book a flight from Ontario to New Hampshire (average of $334). Flying from Ontario to New Hampshire in April is currently the most expensive (average of $396). 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.

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 July 3, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Ontario to New Hampshire. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,266 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,545 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    For a flight from Ontario to New Hampshire, you will be flying from Ontario. Ontario (ONT) is just 3.1 mi from the center of the city.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $89. American Airlines flights start at $127 while deals on United Airlines start at $132 one-way.

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

    The most popular route from Ontario to New Hampshire is Ontario - Boston Logan Intl. You may also consider Ontario - Portland or Ontario - Manchester.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to New Hampshire 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 Ontario to New Hampshire?

    Currently, January is the cheapest month in which you can book a flight from Ontario to New Hampshire (average of $334). Flying from Ontario to New Hampshire in April is currently the most expensive (average of $396). 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 Ontario to New Hampshire

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

Discover the top 2 airlines 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$374Average$516FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$416Average$553FlexibilityNo cancel feeOn-time71%

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