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New Hampshire

$126+ 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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MHT
Apr 10 — Apr 171
Fri 4/10
Fri 4/17
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 March 11, 2026.

This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:49 pm
ONT
-
BOS
1 stop10h 35m
United Airlines
Sat 4/255:30 am
BOS
-
ONT
1 stop9h 50m
United Airlines
Deal found 3/11$246
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/41:30 pm
ONT
-
BOS
1 stop8h 40m
United Airlines
Wed 5/64:35 pm
BOS
-
ONT
1 stop9h 00m
United Airlines
Deal found 3/11$251
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.
Mon 5/411:55 pm
ONT
-
BOS
2 stops9h 20m
Southwest
Wed 5/62:25 pm
BOS
-
ONT
2 stops10h 25m
Southwest
Deal found 3/11$261
This United Airlines deal was found by Cheapflights users on 3/7. 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 4/176:45 pm
ONT
-
BOS
1 stop10h 39m
United Airlines
Mon 4/275:30 am
BOS
-
ONT
1 stop9h 50m
United Airlines
Deal found 3/7$274
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.
Fri 5/17:35 pm
ONT
-
BOS
2 stops10h 52m
American Airlines
Tue 5/53:18 pm
BOS
-
ONT
1 stop10h 18m
American Airlines
Deal found 3/11$276
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.
Mon 4/2011:55 pm
ONT
-
BOS
1 stop8h 05m
Southwest
Sat 4/254:50 pm
BOS
-
ONT
1 stop8h 10m
Southwest
Deal found 3/11$277
This American Airlines deal was found by Cheapflights users on 3/6. 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 8/1212:47 pm
ONT
-
BOS
1 stop7h 33m
American Airlines
Tue 8/184:15 pm
BOS
-
ONT
1 stop8h 59m
American Airlines
Deal found 3/6$279
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/89:55 pm
ONT
-
BOS
1 stop7h 10m
Southwest
Mon 4/133:45 pm
BOS
-
ONT
2 stops10h 20m
Southwest
Deal found 3/9$284
This United Airlines deal was found by Cheapflights users on 3/5. 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 5/57:00 am
ONT
-
PWM
2 stops13h 59m
United Airlines
Tue 5/124:50 pm
PWM
-
ONT
1 stop8h 45m
United Airlines
Deal found 3/5$344
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1611:59 pm
ONT
-
PWM
1 stop10h 30m
JetBlue
Tue 6/232:25 pm
PWM
-
ONT
1 stop11h 15m
JetBlue
Deal found 3/10$346
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 4/2811:59 pm
ONT
-
PWM
2 stops12h 10m
American Airlines
Wed 5/610:50 am
PWM
-
ONT
2 stops10h 40m
American Airlines
Deal found 3/9$350
This Delta deal was found by Cheapflights users on 3/6. 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 4/1812:49 pm
ONT
-
PWM
1 stop7h 34m
Delta
Sat 4/251:12 pm
PWM
-
ONT
1 stop10h 48m
Delta
Deal found 3/6$359

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 March 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$274
(United Airlines)

One-way from

$126
(American Airlines)

Popular in

July

Cheapest in

January

Average price

$377
Provider with most accurate pricing for Los Angeles Los Angeles-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles 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 ($44 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 March 2026
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 March 11, 2026.
Use the filters below to find and compare flights from Ontario to New Hampshire that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Sat 5/23

5:55 pm-6:20 am

1 stop9h 25m

Boston Logan Intl

Thu 5/28

6:10 am-12:19 pm

1 stop9h 09m

$297

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Sun 4/19

10:15 pm-9:49 am

1 stop8h 34m

Boston Logan Intl

Sat 4/25

2:00 pm-9:00 pm

1 stop10h 00m

$297

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Sat 5/9

10:39 am-11:59 pm

1 stop10h 20m

Boston Logan Intl

Thu 5/14

4:48 pm-11:58 pm

1 stop10h 10m

$333

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Tue 5/5

7:00 am-11:59 pm

2 stops13h 59m

Portland

Tue 5/12

4:50 pm-10:35 pm

1 stop8h 45m

$344
Quickest round-trip

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 7/7

11:55 pm-10:55 am

1 stop8h 00m

Boston Logan Intl

Tue 7/14

5:00 am-9:35 am

1 stop7h 35m

$358

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Wed 7/8

11:55 pm-12:40 pm

1 stop9h 45m

Boston Logan Intl

Sat 7/18

5:20 am-2:20 pm

1 stop12h 00m

$359

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Sat 4/18

12:49 pm-11:23 pm

1 stop7h 34m

Portland

Sat 4/25

1:12 pm-9:00 pm

1 stop10h 48m

$359

OntarioManchester

ONT - MHT

ONTMHT

Ontario

Mon 5/4

9:55 pm-8:05 am

1 stop7h 10m

Manchester

Mon 5/18

9:15 am-3:15 pm

1 stop9h 00m

$367

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Wed 4/15

10:33 am-11:59 pm

1 stop10h 26m

Boston Logan Intl

Sun 4/26

7:00 am-9:45 am

1 stop29h 45m

$386

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 5/7

7:00 am-5:22 pm

1 stop7h 22m

Boston Logan Intl

Thu 5/14

6:00 am-12:22 pm

1 stop9h 22m

$399

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

Showing 1-10 of 59 resultsSorted by cheapest first
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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
No data available for this route at this time. Please check back soon.

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 March 11, 2026.
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
4,317 reviews

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

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
4,317 reviews
Southwest
8.0
Very good
4,317 reviews

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

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?

    Delta, United Airlines, and Southwest can get you from Ontario to New Hampshire in just under 7h 10m. Your travel time can differ by up to 7h 47m. Airlines will cover a distance of 2535 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.

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 March 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$416Average$537FlexibilityNo cancel feeOn-time63%

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