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New Hampshire

$107+ 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MHT
nov 12 — nov 191
qua 11/12
qua 11/19
1 adult, Economy
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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 outubro 13, 2025.

This KAYAK deal was found by Cheapflights users on 10/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 11/811:59 amONT - BOS
1 stop9h 21mAlaska Airlines
qua 11/127:00 amBOS - ONT
1 stop11h 17mAlaska Airlines
Deal found 10/11$282
This United Airlines deal was found by Cheapflights users on 10/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 12/121:34 pmONT - BOS
1 stop7h 10mUnited Airlines
dom 1/183:25 pmBOS - ONT
1 stop9h 33mUnited Airlines
Deal found 10/12$286
This American Airlines deal was found by Cheapflights users on 10/12. 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.
sex 12/129:59 amONT - BOS
1 stop7h 37mAmerican Airlines
dom 1/1811:10 amBOS - ONT
2 stops10h 10mAmerican Airlines
Deal found 10/12$291
This KAYAK deal was found by Cheapflights users on 10/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 11/511:59 amONT - BOS
1 stop9h 21mAlaska Airlines
qua 11/194:46 pmBOS - ONT
1 stop10h 10mAlaska Airlines
Deal found 10/12$292
This United Airlines deal was found by Cheapflights users on 10/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 11/111:33 pmONT - BOS
1 stop7h 06mUnited Airlines
ter 11/183:15 pmBOS - ONT
1 stop8h 29mUnited Airlines
Deal found 10/12$293
This Delta deal was found by Cheapflights users on 10/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 11/710:00 pmONT - BOS
1 stop9h 20mDelta
dom 11/96:10 amBOS - ONT
1 stop9h 08mDelta
Deal found 10/13$297
This Alaska Airlines deal was found by Cheapflights users on 10/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 11/511:59 amONT - BOS
1 stop9h 21mAlaska Airlines
qua 11/127:00 amBOS - ONT
1 stop11h 17mAlaska Airlines
Deal found 10/11$302
This United Airlines deal was found by Cheapflights users on 10/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 11/85:05 amONT - BOS
2 stops9h 10mUnited Airlines
ter 11/186:00 amBOS - ONT
2 stops9h 31mUnited Airlines
Deal found 10/12$303
This Southwest deal was found by Cheapflights users on 10/11. 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.
qui 11/62:15 pmONT - BOS
1 stop6h 50mSouthwest
seg 11/108:50 amBOS - ONT
1 stop11h 25mSouthwest
Deal found 10/11$308
This Cheapflightsfares deal was found by Cheapflights users on 10/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 11/265:00 amONT - BOS
1 stop8h 59mAlaska Airlines
dom 11/305:28 pmBOS - ONT
1 stop9h 27mAlaska Airlines
Deal found 10/11$322
This United Airlines deal was found by Cheapflights users on 10/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 11/85:05 amONT - PWM
1 stop7h 43mUnited Airlines
sáb 11/154:57 pmPWM - ONT
1 stop8h 34mUnited Airlines
Deal found 10/11$351
This Southwest deal was found by Cheapflights users on 10/11. 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.
sex 10/317:10 amONT - MHT
1 stop11h 10mSouthwest
dom 11/25:00 amMHT - ONT
1 stop8h 05mSouthwest
Deal found 10/11$393

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 outubro 13, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$282
(KAYAK)

One-way from

$107
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$376
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
High demand for flights, 2% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 outubro 13, 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

ter 11/11

10:34 pm-10:29 am

1 stop8h 55m

Boston Logan Intl

sáb 11/15

2:45 pm-9:11 pm

1 stop9h 26m

$293

OntarioBoston

ONT - BOS

ONTBOS

Ontario

sáb 11/8

5:05 am-3:42 pm

1 stop7h 37m

Boston Logan Intl

ter 11/18

3:15 pm-8:44 pm

1 stop8h 29m

$293

OntarioBoston

ONT - BOS

ONTBOS

Ontario

sex 10/31

1:15 pm-11:48 pm

1 stop7h 33m

Boston Logan Intl

dom 11/2

5:15 am-11:16 am

1 stop9h 01m

$297

OntarioBoston

ONT - BOS

ONTBOS

Ontario

sex 11/7

1:15 pm-11:48 pm

1 stop7h 33m

Boston Logan Intl

dom 11/9

6:10 am-12:18 pm

1 stop9h 08m

$297

OntarioBoston

ONT - BOS

ONTBOS

Ontario

qui 12/11

1:20 pm-11:41 pm

1 stop7h 21m

Boston Logan Intl

sex 12/12

6:10 am-12:21 pm

1 stop9h 11m

$297

OntarioBoston

ONT - BOS

ONTBOS

Ontario

qui 11/6

7:30 pm-5:31 am

1 stop7h 01m

Boston Logan Intl

ter 11/18

8:00 am-4:03 pm

2 stops11h 03m

$298

OntarioBoston

ONT - BOS

ONTBOS

Ontario

qua 11/26

10:25 pm-10:37 am

1 stop9h 12m

Boston Logan Intl

sex 11/28

6:10 am-12:18 pm

1 stop9h 08m

$338

OntarioPortland

ONT - PWM

ONTPWM

Ontario

sáb 11/8

5:05 am-3:48 pm

1 stop7h 43m

Portland

sáb 11/15

4:57 pm-10:31 pm

1 stop8h 34m

$351

OntarioBoston

ONT - BOS

ONTBOS

Ontario

seg 11/10

6:11 pm-7:29 am

1 stop10h 18m

Boston Logan Intl

qua 11/12

7:00 am-3:17 pm

1 stop11h 17m

$354

OntarioManchester

ONT - MHT

ONTMHT

Ontario

sex 10/31

7:10 am-9:20 pm

1 stop11h 10m

Manchester

dom 11/2

5:00 am-10:05 am

1 stop8h 05m

$393

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 53 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 outubro 13, 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
4,235 reviews

Comfort

8.0

Crew

8.6

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,235 reviews
Southwest
8.0
Very good
4,235 reviews

Comfort

8.0

Crew

8.6

Boarding

8.1

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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?

    American Airlines, United Airlines, and Delta can get you from Ontario to New Hampshire in just under 7h 33m. Your travel time can differ by up to 1h 22m. Airlines will cover a distance of 2559 mi. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $140. Alaska Airlines flights start at $146 while deals on United Airlines start at $176 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 - Manchester or Ontario - Portland.

  • 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 outubro 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$446Average$537FlexibilityNo cancel feeOn-time63%

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