HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
New Hampshire

$105+ 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MHT
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to New Hampshire with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 May 1, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$261
(United Airlines)

One-way from

$105
(Frontier)

Popular in

July

Cheapest in

January

Average price

$393
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. 13% potential increase in price ($57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
Search Deals

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 May 1, 2025.

This United Airlines deal was found by Cheapflights users on 5/1. 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.
Tue 6/106:32 pmONT - PWM
2 stops13h 01mUnited Airlines
Tue 6/172:05 pmPWM - ONT
2 stops11h 21mUnited Airlines
Deal found 5/1$261
This JetBlue deal was found by Cheapflights users on 4/30. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1611:00 pmONT - PWM
1 stop11h 16mJetBlue
Tue 9/302:15 pmPWM - ONT
1 stop10h 26mJetBlue
Deal found 4/30$291
This Alaska Airlines deal was found by Cheapflights users on 5/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2511:51 amONT - BOS
1 stop9h 15mAlaska Airlines
Thu 5/299:00 amBOS - ONT
1 stop9h 50mAlaska Airlines
Deal found 5/1$296
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2110:59 pmONT - PWM
1 stop9h 31mDelta
Tue 9/3012:30 pmPWM - ONT
1 stop10h 12mDelta
Deal found 4/30$297
This Delta deal was found by Cheapflights users on 5/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/241:10 pmONT - BOS
1 stop7h 48mDelta
Fri 5/306:50 amBOS - ONT
1 stop8h 25mDelta
Deal found 5/1$297
This American Airlines deal was found by Cheapflights users on 5/1. 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 5/141:14 pmONT - BOS
1 stop7h 45mAmerican Airlines
Sat 5/175:35 amBOS - ONT
1 stop11h 17mAmerican Airlines
Deal found 5/1$299
This Expedia deal was found by Cheapflights users on 4/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/18:07 pmONT - BOS
1 stop11h 54mMultiple Airlines
Thu 6/57:30 amBOS - ONT
1 stop11h 20mMultiple Airlines
Deal found 4/30$304
This Frontier deal was found by Cheapflights users on 5/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/228:38 pmONT - BOS
1 stop11h 14mFrontier
Mon 6/211:56 amBOS - ONT
1 stop10h 16mFrontier
Deal found 5/1$311
This Southwest deal was found by Cheapflights users on 5/1. 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.
Wed 5/287:00 amONT - PWM
2 stops12h 30mSouthwest
Wed 6/115:30 amPWM - ONT
1 stop12h 35mSouthwest
Deal found 5/1$312
This Southwest deal was found by Cheapflights users on 4/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1510:35 amONT - BOS
1 stop9h 00mSouthwest
Wed 8/205:40 amBOS - ONT
1 stop8h 55mSouthwest
Deal found 4/30$318
This Trip.com deal was found by Cheapflights users on 4/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/92:06 pmONT - PWM
2 stops25h 20mFrontier
Sun 5/118:23 pmPWM - ONT
2 stops42h 45mFrontier
Deal found 4/30$328
This JetBlue deal was found by Cheapflights users on 4/30. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/210:59 pmONT - BOS
1 stop9h 43mJetBlue
Wed 6/112:50 pmBOS - ONT
1 stop9h 21mJetBlue
Deal found 4/30$330

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 May 1, 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 6/10

6:32 pm-10:33 am

2 stops13h 01m

Portland

Tue 6/17

2:05 pm-10:26 pm

2 stops11h 21m

$261

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Tue 9/16

11:00 pm-1:16 pm

1 stop11h 16m

Portland

Tue 9/30

2:15 pm-9:41 pm

1 stop10h 26m

$291

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Sun 5/25

11:51 am-12:06 am

1 stop9h 15m

Boston Logan Intl

Thu 5/29

9:00 am-3:50 pm

1 stop9h 50m

$296

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Sun 9/21

10:59 pm-11:30 am

1 stop9h 31m

Portland

Tue 9/30

12:30 pm-7:42 pm

1 stop10h 12m

$297

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Sat 5/24

1:10 pm-11:58 pm

1 stop7h 48m

Boston Logan Intl

Fri 5/30

6:50 am-12:15 pm

1 stop8h 25m

$297

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Wed 5/14

1:14 pm-11:59 pm

1 stop7h 45m

Boston Logan Intl

Sat 5/17

5:35 am-1:52 pm

1 stop11h 17m

$299

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Sun 6/1

8:07 pm-11:01 am

1 stop11h 54m

Boston Logan Intl

Thu 6/5

7:30 am-3:50 pm

1 stop11h 20m

$304

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 5/22

8:38 pm-10:52 am

1 stop11h 14m

Boston Logan Intl

Mon 6/2

11:56 am-7:12 pm

1 stop10h 16m

$311

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Wed 5/28

7:00 am-10:30 pm

2 stops12h 30m

Portland

Wed 6/11

5:30 am-3:05 pm

1 stop12h 35m

$312

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Fri 8/15

10:35 am-10:35 pm

1 stop9h 00m

Boston Logan Intl

Wed 8/20

5:40 am-11:35 am

1 stop8h 55m

$318

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/1

Showing 1-10 of 39 results
1
2
3
4

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 June is currently the most expensive (average of $421). 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 May 1, 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
9,972 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.1

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
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.1

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
4,293 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.1

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
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,409 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.1

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Food

7.1

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.1

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 $105. Alaska Airlines flights start at $139 while deals on United Airlines start at $140 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, 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 June is currently the most expensive (average of $421). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to New Hampshire

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to John F Kennedy Intl flights
Los Angeles to Seattle flights
San Francisco to John F Kennedy Intl flights
Los Angeles to Dallas/Fort Worth flights
Los Angeles to Newark flights
Los Angeles to LaGuardia flights
San Francisco to Newark flights
Los Angeles to Honolulu flights
Ontario to John F Kennedy Intl flights
San Francisco to Seattle flights
San Francisco to Los Angeles flights
Los Angeles to Las Vegas flights
San Jose to Los Angeles flights
Los Angeles to Miami flights
Los Angeles to Boston flights
Oakland to Los Angeles flights
Los Angeles to O'Hare Intl flights
Los Angeles to Orlando flights
Los Angeles to San Francisco flights
Santa Ana to Las Vegas flights
San Francisco to LaGuardia flights
San Francisco to Las Vegas flights
Burbank to Las Vegas flights
Los Angeles to San Jose flights
San Francisco to Honolulu flights
Santa Ana to Seattle flights
Burbank to Newark flights
Los Angeles to Oakland flights
Los Angeles to Reagan-National flights
Ontario to Seattle flights
Santa Ana to Newark flights
San Francisco to Ontario flights
Los Angeles to Dulles Intl flights
San Diego to Seattle flights
Los Angeles to Portland flights
Los Angeles to Baltimore flights
Oakland to Santa Ana flights
Los Angeles to Hobby flights
Ontario to Newark flights
San Francisco to Dallas/Fort Worth flights
Los Angeles to Fort Lauderdale flights
San Francisco to O'Hare Intl flights
Ontario to San Francisco flights
San Diego to John F Kennedy Intl flights
San Jose to Seattle flights
Ontario to Honolulu flights
Santa Ana to Oakland flights
San Francisco to Boston flights
San Francisco to Dulles Intl flights
San Jose to Las Vegas flights

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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$374Average$486FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$391Average$692FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
Privacy Preferences©2025 Cheapflights