$106 Find Cheap Flights from Ontario to New Hampshire

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to New Hampshire departing on 7/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to New Hampshire

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to New Hampshire, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to New Hampshire, as well as popular online travel agencies
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Best New Hampshire Flight Deals from Ontario

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boston
Boston1 stop$257
Portland
Portland1 stop$251
Boston
Boston1 stop$257
Portland
Portland1 stop$251

Cheap Flights from Ontario to New Hampshire

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to New Hampshire that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to New Hampshire

Tue, Oct 21 - Tue, Oct 28
American Airlines Logo
11:09 pm - 11:21 amONT-PWM
9h 12m1 stop
American Airlines Logo
2:53 pm - 8:00 pmPWM-ONT
8h 07m1 stop
$251American Airlines
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Tue, Oct 21 - Tue, Oct 28
United Airlines Logo
7:02 am - 11:13 pmONT-PWM
13h 11m2 stops
United Airlines Logo
4:48 pm - 10:31 pmPWM-ONT
8h 43m1 stop
$256United Airlines
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Thu, Jul 10 - Fri, Jul 25
JetBlue Logo
11:59 pm - 12:15 pmONT-BOS
9h 16m1 stop
JetBlue Logo
1:59 pm - 9:59 pmBOS-ONT
11h 00m1 stop
$286JetBlue
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Mon, Aug 18 - Wed, Sep 10
JetBlue Logo
11:45 pm - 11:51 amONT-BOS
9h 06m1 stop
JetBlue Logo
2:45 pm - 9:29 pmBOS-ONT
9h 44m1 stop
$290JetBlue
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Sat, Aug 23 - Tue, Sep 9
Delta Logo
11:45 am - 12:03 amONT-PWM
9h 18m1 stop
Delta Logo
1:34 pm - 7:11 pmPWM-ONT
8h 37m1 stop
$297Delta
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Wed, Aug 27 - Thu, Sep 4
Delta Logo
11:45 am - 12:03 amONT-PWM
9h 18m1 stop
Delta Logo
1:34 pm - 7:11 pmPWM-ONT
8h 37m1 stop
$302Delta
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Wed, Sep 17 - Thu, Sep 25
Alaska Airlines Logo
11:39 am - 12:23 amONT-BOS
9h 44m1 stop
Alaska Airlines Logo
7:20 am - 2:09 pmBOS-ONT
9h 49m1 stop
$312Alaska Airlines
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Tue, Oct 21 - Sat, Oct 25
Southwest Logo
9:10 pm - 9:20 amONT-BOS
9h 10m2 stops
Southwest Logo
6:30 am - 11:20 amBOS-ONT
7h 50m1 stop
$330Southwest
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Mon, Jun 30 - Thu, Jul 3
Southwest Logo
9:20 pm - 9:50 amONT-BOS
9h 30m1 stop
Southwest Logo
5:35 am - 3:25 pmBOS-ONT
12h 50m1 stop
$343Southwest
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Sat, Sep 20 - Tue, Sep 23
Alaska Airlines Logo
7:10 am - 12:23 amONT-BOS
14h 13m2 stops
Alaska Airlines Logo
7:20 am - 2:09 pmBOS-ONT
9h 49m1 stop
$353Alaska Airlines
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KAYAK's insights & trends for Ontario to New Hampshire flights

Get data-powered insights and trends into flights from Ontario to New Hampshire to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Ontario to New Hampshire?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to New Hampshire, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to New Hampshire is August, when tickets cost $368 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $516 and $471 respectively.

What’s the cheapest day of the week to fly from Ontario to New Hampshire?

The average price of all round-trip flights from Ontario to New Hampshire clicked on KAYAK for each day over the last 12 months.

For Ontario to New Hampshire, Tuesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from New Hampshire back to Ontario, the best deals are generally found on Tuesday, with Sunday being the most expensive.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to New Hampshire, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to New Hampshire, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.


Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$106
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly with an average 20% increase in price.
Flight from Ontario to Boston

FAQs - booking New Hampshire flights

  • How does KAYAK find such low prices on flights from Ontario to New Hampshire?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to New Hampshire.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to New Hampshire?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario to New Hampshire is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to New Hampshire?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Ontario to New Hampshire with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to New Hampshire?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Ontario to New Hampshire up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to New Hampshire?

    The cheapest time of day to fly to New Hampshire is generally in the evening, when round-trip flights cost $405 on average. Morning departures are around 14% more expensive than evening flights, on average. The most expensive time of day to fly to New Hampshire is generally in the morning, which is peak travel time and where the average cost of a ticket is $463.

Reviews of the top airlines flying from Ontario to New Hampshire

 
See real verified KAYAK customer reviews for airlines flying from Ontario to New Hampshire. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to New Hampshire? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4280 reviews
7.6Entertainment
8.2Boarding
7.1Food
8.0Comfort
8.6Crew
Airline reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

10.0 ExcellentMichael, Jun 2025SMF - SEA
Read more Southwest reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

It was a perfect flight in all aspects! Both legs!

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

I liked the crew member who gave flight instructions on "in case of a problem:. The seats are so small that only a young teenager could sit in middle seat.

Great flight staff. Ease of boarding. Overall, very uneventful and easy trip.

Employees were kind and funny, as always! Flight was late but no announcements were made for people with tight connections to help them transition quickly. No service due to turbulence.

I recently flew Southwest from San Jose to Honolulu. I was very impressed with the flight crew, especially the flight attendant in charge of the front of the plane. She came through the aisle at least five times for drinks and water, and two times for snacks. I have not seen such service since I flew first class. Also, for the first time, they gave us the correct baggage claim number, and the luggage came out quickly. I can't wait for Southwest to have assigned seating! I absolutely hate the Cattle Call boarding procedure and the mad dash to get seats and overhead bins. However, the boarding was efficient.

We had a nice flight. Boarding was easy, our seats were comfortable and the on board service was pleasant.

Service was great, boarding and exiting went smoothly, and the flight was very pleasant.

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a not a great airport.

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

Cramped seats. FAA should make airlines have more legroom, for even short people complain

Eventless. It was a good flight and good crew. Can’t complaint.

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

We kept being told that the flight was full and that all overhead compartments were full and therefore had to check in our hand luggage. We were some of the last people to board and noticed that there was still sufficient space in the overhead compartments. We were obliged to check in hand luggage when there was space and so had to wait at luggage retrieval which took a while to then noticed damage to our luggage - not a great experience!

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

The flight was quick and to the point. The crew just did their job w/o excessive talking and everything was just perfect.

Awkward carry on process. Forced to check all carry on. No overhead space of worthiness. Left delayed, but made up the time. Crew was amicable.

Amazingly comfy flight - I had upgraded for a reasonable price and it was worth it. The food also was good.

Everything you need to know for your flight from Ontario to New Hampshire

Information on your arrival and departure airports

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