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Cheap flights from Ontario to New Hampshire from $99

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to New Hampshire departing on 2/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Ontario to New Hampshire

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
11:53 am - 11:54 pmONT-BOS
9h 01m1 stop
Alaska Airlines Logo
7:00 am - 3:08 pmBOS-ONT
11h 08m1 stop
$248Alaska Airlines
Find Deal
Tue, Jan 27 - Tue, Feb 3
Alaska Airlines Logo
1:46 pm - 3:20 pmONT-BOS
22h 34m1 stop
Alaska Airlines Logo
7:00 am - 3:08 pmBOS-ONT
11h 08m1 stop
$250Alaska Airlines
Find Deal
Mon, Feb 2 - Tue, Feb 10
Alaska Airlines Logo
11:53 am - 11:54 pmONT-BOS
9h 01m1 stop
Alaska Airlines Logo
7:00 am - 3:08 pmBOS-ONT
11h 08m1 stop
$251Alaska Airlines
Find Deal
Thu, Jan 8 - Wed, Jan 14
American Airlines Logo
9:59 am - 10:19 pmONT-BOS
9h 20m2 stops
American Airlines Logo
8:50 am - 4:05 pmBOS-ONT
10h 15m1 stop
$256American Airlines
Find Deal
Thu, Jan 8 - Sun, Jan 11
Hawaiian Airlines Logo
11:53 am - 11:54 pmONT-BOS
9h 01m1 stop
Hawaiian Airlines Logo
7:00 am - 3:08 pmBOS-ONT
11h 08m1 stop
$275Hawaiian Airlines
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Thu, Jan 8 - Wed, Jan 14
United Airlines Logo
6:00 am - 6:48 pmONT-BOS
9h 48m2 stops
United Airlines Logo
3:32 pm - 9:49 pmBOS-ONT
9h 17m1 stop
$276United Airlines
Find Deal
Mon, Dec 8 - Thu, Dec 11
American Airlines Logo
12:27 pm - 1:15 pmONT-ORH
21h 48m2 stops
American Airlines Logo
1:40 pm - 10:04 pmORH-ONT
11h 24m2 stops
$332American Airlines
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Sat, Feb 21 - Thu, Feb 26
Southwest Logo
5:45 pm - 8:10 amONT-MHT
11h 25m2 stops
Southwest Logo
5:00 am - 10:40 amMHT-ONT
8h 40m1 stop
$360Southwest
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Wed, Feb 11 - Wed, Feb 18
Southwest Logo
7:00 am - 10:05 pmONT-MHT
12h 05m2 stops
Southwest Logo
5:00 am - 10:40 amMHT-ONT
8h 40m1 stop
$361Southwest
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Thu, Jan 22 - Thu, Feb 5
United Airlines Logo
6:41 pm - 9:10 amONT-PWM
11h 29m2 stops
United Airlines Logo
10:15 am - 10:49 pmPWM-ONT
15h 34m3 stops
$428United Airlines
Find Deal
Sat, Dec 6 - Sat, Dec 13

Alaska Airlines flights from Ontario to New Hampshire

Our best Alaska Airlines deals on Ontario to New Hampshire flight tickets
Alaska Airlines
Jan 27
ONT11:53 amOntario
9h 01m
1 stop
BOS11:54 pmBoston Logan Intl
Feb 3
BOS7:00 amBoston Logan Intl
11h 08m
1 stop
ONT3:08 pmOntario
$248
Find similar
Alaska Airlines
Feb 2
ONT1:46 pmOntario
22h 34m
1 stop
BOS3:20 pmBoston Logan Intl
Feb 10
BOS7:00 amBoston Logan Intl
11h 08m
1 stop
ONT3:08 pmOntario
$250
Find similar
Alaska Airlines
Jan 8
ONT11:53 amOntario
9h 01m
1 stop
BOS11:54 pmBoston Logan Intl
Jan 14
BOS7:00 amBoston Logan Intl
11h 08m
1 stop
ONT3:08 pmOntario
$251
Find similar

United Airlines flights from Ontario to New Hampshire

Our best United Airlines deals on Ontario to New Hampshire flight tickets
United Airlines
Dec 8
ONT6:00 amOntario
8h 43m
1 stop
BOS5:43 pmBoston Logan Intl
Dec 11
BOS3:32 pmBoston Logan Intl
9h 17m
1 stop
ONT9:49 pmOntario
$271
Find similar
United Airlines
Dec 8
ONT6:00 amOntario
9h 48m
2 stops
BOS6:48 pmBoston Logan Intl
Dec 11
BOS3:32 pmBoston Logan Intl
9h 17m
1 stop
ONT9:49 pmOntario
$276
Find similar
United Airlines
Jan 12
ONT6:39 pmOntario
10h 31m
1 stop
BOS8:10 amBoston Logan Intl
Jan 16
BOS3:25 pmBoston Logan Intl
9h 33m
1 stop
ONT9:58 pmOntario
$285
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated November 26, 2025.
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

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 1/27

11:53 am-11:54 pm

1 stop9h 01m

Boston Logan Intl

Tue 2/3

7:00 am-3:08 pm

1 stop11h 08m

$248

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Mon 2/2

1:46 pm-3:20 pm

1 stop22h 34m

Boston Logan Intl

Tue 2/10

7:00 am-3:08 pm

1 stop11h 08m

$250

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 1/8

11:53 am-11:54 pm

1 stop9h 01m

Boston Logan Intl

Wed 1/14

7:00 am-3:08 pm

1 stop11h 08m

$251

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 1/8

9:59 am-10:19 pm

2 stops9h 20m

Boston Logan Intl

Sun 1/11

8:50 am-4:05 pm

1 stop10h 15m

$256

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 1/8

11:53 am-11:54 pm

1 stop9h 01m

Boston Logan Intl

Wed 1/14

7:00 am-3:08 pm

1 stop11h 08m

$275

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Mon 12/8

6:00 am-6:48 pm

2 stops9h 48m

Boston Logan Intl

Thu 12/11

3:32 pm-9:49 pm

1 stop9h 17m

$276

OntarioWorcester

ONT - ORH

ONTORH

Ontario

Sat 2/21

12:27 pm-1:15 pm

2 stops21h 48m

Worcester

Thu 2/26

1:40 pm-10:04 pm

2 stops11h 24m

$332

OntarioManchester

ONT - MHT

ONTMHT

Ontario

Wed 2/11

5:45 pm-8:10 am

2 stops11h 25m

Manchester

Wed 2/18

5:00 am-10:40 am

1 stop8h 40m

$360

OntarioManchester

ONT - MHT

ONTMHT

Ontario

Thu 1/22

7:00 am-10:05 pm

2 stops12h 05m

Manchester

Thu 2/5

5:00 am-10:40 am

1 stop8h 40m

$361

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Sat 12/6

6:41 pm-9:10 am

2 stops11h 29m

Portland

Sat 12/13

10:15 am-10:49 pm

3 stops15h 34m

$428

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to New Hampshire from

How to get the cheapest flight ticket from Ontario to New Hampshire

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to New Hampshire?

The month of August is another great option to travel to New Hampshire, with average flight prices from Ontario averaging around $378.

What is the cheapest day to depart on your flight to New Hampshire?

The cheapest day to depart on your flight to New Hampshire is on a Tuesday when prices can be found for as low as $402. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to New Hampshire is Sunday, with ticket prices averaging around $602.

What is the cheapest time of day to depart on your flight to New Hampshire?

According to our data, the cheapest time of day to fly to New Hampshire is in the afternoon. momondo users have found flights departing from Ontario to New Hampshire in the afternoon for as low as $405. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the morning because they tend to be around $463. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to New Hampshire?

You are more likely to see cheaper flights to New Hampshire from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to New Hampshire for around $420 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to New Hampshire from Ontario for as low as $366 on momondo.

Can stopping save me money on Ontario to New Hampshire flights?

You could potentially save up to 16% on your flight if you consider stops on a Ontario to New Hampshire flight.

Cheap Ontario to New Hampshire flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to New Hampshire

Fastest flight time

7h 02m

Direct flights

None
The fastest flight from Ontario to New Hampshire takes 7h 02m
There are no direct flights from Ontario to New Hampshire. There are no popular flight routes from Ontario to New Hampshire.
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  • When did momondo last update prices for flights from Ontario Airport to New Hampshire?

    Prices for flights from Ontario Airport to New Hampshire were last updated today.

  • How many operators does momondo search for flights from Ontario Airport to New Hampshire?

  • How old do you have to be to fly from Ontario Airport to New Hampshire?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to New Hampshire.

  • What documentation or ID do you need to fly to New Hampshire?

    The travel and health documents required for your trip to New Hampshire can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at New Hampshire. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Ontario to New Hampshire

Compare and see reviews for airlines that fly from Ontario to New Hampshire with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $416Free CancellationRating
8.0
4,254 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to New Hampshire?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to New Hampshire. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to New Hampshire with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to New Hampshire from Ontario with this policy.

How can momondo help me find flights from Ontario to New Hampshire?

momondo provides multiple filters to help you find the best flight to New Hampshire from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ontario to New Hampshire right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to New Hampshire from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your New Hampshire trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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