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New Hampshire

$106+ 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 7/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MHT
jun. 23 — jun. 301
lun. 6/23
lun. 6/30
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 junio 18, 2025.

Round-trip from

$251
(American Airlines)

One-way from

$106
(Frontier)

Popular in

December

Cheapest in

January

Average price

$449
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 ($10 potential savings vs. average RT price).
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Average for round-trip flights in June 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 junio 18, 2025.

This American Airlines deal was found by Cheapflights users on 6/17. 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.
mar. 10/2111:09 pmONT - PWM
1 stop9h 12mAmerican Airlines
mar. 10/282:53 pmPWM - ONT
1 stop8h 07mAmerican Airlines
Deal found 6/17$251
This United Airlines deal was found by Cheapflights users on 6/17. 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.
mar. 10/217:02 amONT - PWM
2 stops13h 11mUnited Airlines
mar. 10/284:48 pmPWM - ONT
1 stop8h 43mUnited Airlines
Deal found 6/17$256
This United Airlines deal was found by Cheapflights users on 6/17. 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.
lun. 6/306:39 pmONT - BOS
1 stop8h 35mUnited Airlines
vie. 7/43:08 pmBOS - ONT
1 stop8h 46mUnited Airlines
Deal found 6/17$257
This American Airlines deal was found by Cheapflights users on 6/15. 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.
dom. 8/316:10 amONT - BOS
1 stop8h 16mAmerican Airlines
mié. 9/39:50 amBOS - ONT
1 stop11h 21mAmerican Airlines
Deal found 6/15$284
This Trip.com deal was found by Cheapflights users on 6/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/1011:59 pmONT - BOS
1 stop9h 16mJetBlue
vie. 7/251:59 pmBOS - ONT
1 stop11h 00mJetBlue
Deal found 6/18$286
This JetBlue deal was found by Cheapflights users on 6/16. 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.
dom. 8/2411:45 pmONT - PWM
1 stop10h 38mJetBlue
vie. 9/52:17 pmPWM - ONT
1 stop10h 12mJetBlue
Deal found 6/16$291
This Delta deal was found by Cheapflights users on 6/16. 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.
sáb. 8/2311:45 amONT - PWM
1 stop9h 18mDelta
mar. 9/91:34 pmPWM - ONT
1 stop8h 37mDelta
Deal found 6/16$297
This Delta deal was found by Cheapflights users on 6/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/41:15 pmONT - BOS
1 stop8h 09mDelta
mar. 7/155:35 amBOS - ONT
1 stop7h 55mDelta
Deal found 6/18$305
This Alaska Airlines deal was found by Cheapflights users on 6/16. 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.
mié. 9/1711:39 amONT - BOS
1 stop9h 44mAlaska Airlines
jue. 9/257:20 amBOS - ONT
1 stop9h 49mAlaska Airlines
Deal found 6/16$312
This Southwest deal was found by Cheapflights users on 6/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/712:00 pmONT - BOS
1 stop7h 35mSouthwest
sáb. 10/116:30 amBOS - ONT
1 stop7h 50mSouthwest
Deal found 6/18$325
This Southwest deal was found by Cheapflights users on 6/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/49:20 pmONT - MHT
1 stop7h 50mSouthwest
lun. 8/115:50 amMHT - ONT
1 stop8h 45mSouthwest
Deal found 6/18$337
This Southwest deal was found by Cheapflights users on 6/17. 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.
jue. 8/2112:45 pmONT - PWM
1 stop7h 35mSouthwest
dom. 8/245:35 amPWM - ONT
1 stop13h 10mSouthwest
Deal found 6/17$345

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 junio 18, 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

mar. 10/21

11:09 pm-11:21 am

1 stop9h 12m

Portland

mar. 10/28

2:53 pm-8:00 pm

1 stop8h 07m

$251

OntarioPortland

ONT - PWM

ONTPWM

Ontario

mar. 10/21

7:02 am-11:13 pm

2 stops13h 11m

Portland

mar. 10/28

4:48 pm-10:31 pm

1 stop8h 43m

$256

OntarioBoston

ONT - BOS

ONTBOS

Ontario

lun. 6/30

6:39 pm-6:14 am

1 stop8h 35m

Boston Logan Intl

vie. 7/4

3:08 pm-8:54 pm

1 stop8h 46m

$257

OntarioBoston

ONT - BOS

ONTBOS

Ontario

dom. 8/31

6:10 am-5:26 pm

1 stop8h 16m

Boston Logan Intl

mié. 9/3

9:50 am-6:11 pm

1 stop11h 21m

$284

OntarioBoston

ONT - BOS

ONTBOS

Ontario

jue. 7/10

11:59 pm-12:15 pm

1 stop9h 16m

Boston Logan Intl

vie. 7/25

1:59 pm-9:59 pm

1 stop11h 00m

$286

OntarioPortland

ONT - PWM

ONTPWM

Ontario

dom. 8/24

11:45 pm-1:23 pm

1 stop10h 38m

Portland

vie. 9/5

2:17 pm-9:29 pm

1 stop10h 12m

$291

OntarioPortland

ONT - PWM

ONTPWM

Ontario

sáb. 8/23

11:45 am-12:03 am

1 stop9h 18m

Portland

mar. 9/9

1:34 pm-7:11 pm

1 stop8h 37m

$297

OntarioBoston

ONT - BOS

ONTBOS

Ontario

vie. 7/4

1:15 pm-12:24 am

1 stop8h 09m

Boston Logan Intl

mar. 7/15

5:35 am-10:30 am

1 stop7h 55m

$305

OntarioBoston

ONT - BOS

ONTBOS

Ontario

mié. 9/17

11:39 am-12:23 am

1 stop9h 44m

Boston Logan Intl

mar. 9/23

7:20 am-2:09 pm

1 stop9h 49m

$312

OntarioBoston

ONT - BOS

ONTBOS

Ontario

mar. 10/7

12:00 pm-10:35 pm

1 stop7h 35m

Boston Logan Intl

sáb. 10/11

6:30 am-11:20 am

1 stop7h 50m

$325

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 38 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 July is currently the most expensive (average of $397). 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 junio 18, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Ontario to New Hampshire have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

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

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

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
4,280 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

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
7,964 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

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
2,507 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

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
8,810 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

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 $106. United Airlines flights start at $129 while deals on American Airlines start at $134 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 July is currently the most expensive (average of $397). 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 junio 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$374Average$516FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$391Average$553FlexibilityNo cancel feeOn-time71%

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