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New Hampshire

$80+ 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MHT
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap 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 December 4, 2025.

This American Airlines deal was found by Cheapflights users on 12/4. 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 12/297:18 pmONT - BOS
1 stop7h 19mAmerican Airlines
Tue 1/68:50 amBOS - ONT
1 stop10h 15mAmerican Airlines
Deal found 12/4$268
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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.
Thu 12/256:05 pmONT - BOS
1 stop9h 05mAlaska Airlines
Tue 1/65:12 pmBOS - ONT
1 stop9h 47mAlaska Airlines
Deal found 12/3$289
This American Airlines deal was found by Cheapflights users on 12/4. 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 12/267:18 pmONT - BOS
1 stop7h 19mAmerican Airlines
Mon 1/59:10 amBOS - ONT
1 stop9h 57mAmerican Airlines
Deal found 12/4$318
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:05 pmONT - BOS
1 stop9h 05mAlaska Airlines
Sat 1/316:44 pmBOS - ONT
1 stop19h 15mAlaska Airlines
Deal found 12/2$369
This American Airlines deal was found by Cheapflights users on 12/4. 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 12/292:42 pmONT - ORH
2 stops19h 35mAmerican Airlines
Sun 1/41:45 pmORH - ONT
2 stops31h 31mAmerican Airlines
Deal found 12/4$369
This American Airlines deal was found by Cheapflights users on 12/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/297:18 pmONT - BOS
1 stop7h 19mAmerican Airlines
Fri 1/26:40 amBOS - ONT
1 stop8h 13mAmerican Airlines
Deal found 12/3$377
This United Airlines deal was found by Cheapflights users on 12/4. 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 12/2911:59 pmONT - BOS
1 stop8h 09mUnited Airlines
Tue 1/610:30 amBOS - ONT
2 stops13h 28mUnited Airlines
Deal found 12/4$384
This United Airlines deal was found by Cheapflights users on 12/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:59 pmONT - BOS
1 stop9h 54mUnited Airlines
Mon 1/54:15 pmBOS - ONT
1 stop9h 10mUnited Airlines
Deal found 12/3$385
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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.
Wed 12/246:05 pmONT - BOS
1 stop9h 05mAlaska Airlines
Mon 1/55:12 pmBOS - ONT
1 stop9h 47mAlaska Airlines
Deal found 12/3$386
This American Airlines deal was found by Cheapflights users on 12/4. 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 12/2812:45 pmONT - ORH
2 stops21h 32mAmerican Airlines
Sun 1/41:45 pmORH - ONT
2 stops31h 31mAmerican Airlines
Deal found 12/4$418
This American Airlines deal was found by Cheapflights users on 12/1. 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.
Wed 12/2412:55 pmONT - ORH
2 stops21h 16mAmerican Airlines
Wed 12/3112:19 pmORH - ONT
2 stops23h 29mAmerican Airlines
Deal found 12/1$427
This Southwest deal was found by Cheapflights users on 12/2. 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.
Wed 12/248:40 amONT - PWM
2 stops10h 35mSouthwest
Thu 1/112:45 pmPWM - ONT
2 stops12h 20mSouthwest
Deal found 12/2$479

Find 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 December 4, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$159
(American Airlines)

One-way from

$80
(American Airlines)

Popular in

July

Cheapest in

January

Average price

$455
Provider with most accurate pricing for Los Angeles-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Boston Logan Intl flights.
Search Deals
From Ontario to New Hampshire
Search Deals
One-way flight from Ontario to New Hampshire
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 4, 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

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 2/5

11:53 am-11:54 pm

1 stop9h 01m

Boston Logan Intl

Tue 2/10

7:00 am-3:08 pm

1 stop11h 08m

$266

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 2/26

5:00 pm-6:00 am

1 stop10h 00m

Boston Logan Intl

Mon 3/2

6:37 pm-11:49 pm

1 stop8h 12m

$297

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 1/8

12:41 pm-1:04 am

1 stop9h 23m

Boston Logan Intl

Wed 1/14

5:35 am-11:31 am

1 stop8h 56m

$299

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Wed 1/7

11:53 am-11:54 pm

1 stop9h 01m

Boston Logan Intl

Tue 1/13

7:00 am-3:08 pm

1 stop11h 08m

$302

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 2/5

11:53 am-11:54 pm

1 stop9h 01m

Boston Logan Intl

Sun 2/8

7:00 am-3:08 pm

1 stop11h 08m

$313

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Sun 1/18

6:00 am-11:43 pm

2 stops14h 43m

Portland

Tue 2/3

12:46 pm-10:48 pm

2 stops13h 02m

$328

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 1/29

11:53 am-11:54 pm

1 stop9h 01m

Boston Logan Intl

Sun 2/1

7:00 am-3:08 pm

1 stop11h 08m

$346

OntarioManchester

ONT - MHT

ONTMHT

Ontario

Sat 1/24

5:40 am-5:30 pm

2 stops8h 50m

Manchester

Sun 1/25

5:00 am-10:40 am

1 stop8h 40m

$360

OntarioWorcester

ONT - ORH

ONTORH

Ontario

Mon 12/29

2:42 pm-1:17 pm

2 stops19h 35m

Worcester

Sun 1/4

1:45 pm-6:16 pm

2 stops31h 31m

$369

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Sat 2/7

11:53 am-11:54 pm

1 stop9h 01m

Boston Logan Intl

Sun 2/8

7:00 am-3:08 pm

1 stop11h 08m

$371

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 60 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, October is the cheapest month in which you can book a flight from Ontario to New Hampshire (average of $198). Flying from Ontario to New Hampshire in March is currently the most expensive (average of $618). 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 December 4, 2025.
Read reviews from past customers who have flown Southwest from Ontario to New Hampshire. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,250 reviews

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Southwest
8.0
Very good
4,250 reviews
Southwest
8.0
Very good
4,250 reviews

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

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.

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

    Alaska Airlines, Delta, and American Airlines can get you from Ontario to New Hampshire in just under 9h 01m. Your travel time can differ by up to 5h 42m. Airlines will cover a distance of 2559 mi. This flight may include one or multiple stops.

  • 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, October is the cheapest month in which you can book a flight from Ontario to New Hampshire (average of $198). Flying from Ontario to New Hampshire in March is currently the most expensive (average of $618). 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 airline flying from Ontario to New Hampshire

Discover the top airline 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$416Average$537FlexibilityNo cancel feeOn-time63%

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