$187 Find Cheap Flights from Ontario to New Hampshire - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Ontario to New Hampshire

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Sort by: Cheapest
Manchester
Manchester
7h 55m2 stops
from $415per person
Booking Insights

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.

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

To get a below average price on the flight from Ontario to New Hampshire, you should book around 2 weeks before departure, which saves you about 35% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low season

January
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 6% lower on average.

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.

Reviews of the top airline flying from Ontario to New Hampshire

 
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 4200 reviews
8.0Comfort
7.5Entertainment
8.6Crew
7.0Food
8.1Boarding
Airline reviews

Southwest has been a nightmare. Delayed flights, missed connections, systems down. Never again am I flying southwest.

2.0 MediocrePhilip, Sep 2026
Read more Southwest reviews

Southwest has been a nightmare. Delayed flights, missed connections, systems down. Never again am I flying southwest.

had to check bag at gate when there was still overhead bin space. As usual the WIFI didn't really work.

The Southwest airline was ok. A big thank you to Kayak team (David), who worked with me on Sunday afternoon to rebook my travel from Burbank, CA, to CVG. My original flight on Sunday was delayed, so I had to cancel Sunday flight and rebook my travel to Monday. Could not have done it without help from David from Kayak team. Ante Soda GE Aerospace

Seated at front bulkhead for a smidge extra leg room away from home and on flight back home. Away crew was very proactive about assuring our carryons had space close behind us (because no seat in front of us our personal items had to be in a small bin overhead). They actively required passengers place overhead luggage on its side so more items could fit in bins. Home crew made no such efforts. I had to struggle back rows to get overhead bags upon landing, no crew help then either, and some disgruntled passengers as I and others retrieved our bags. There was a system that worked pretty well. The home bound crew just didn't feel like working.

Red eye from San Diego. Temperature of the cabin was way too warm and the air duct flowed very little air.

Overall good, just screaming kids in the area the whole flight.

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.

I liked receiving attention from aged and well experienced flight attendants. I disliked the non-gluten-free snack but I brought my own so I was OK.

Really full flight, checked in ASAP and still mid Cs.

More options for your flight from Ontario to New Hampshire

Complete your trip to New Hampshire with a hotel stay or car rental