$129 Find Cheap Flights from San Diego to New Hampshire - Compare and Save

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1 adult, Economy, 0 bags

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Cheap Flights from San Diego to New Hampshire

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Boston
Bostonnonstop$236
Portland
Portland2 stops$322
Boston
Bostonnonstop$236
Portland
Portland2 stops$322
Booking Insights

KAYAK's insights & trends for San Diego to New Hampshire flights

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

How much is a round-trip flight from San Diego to New Hampshire?

Flight prices are below average for this route right now.

Flights to New Hampshire from San Diego usually cost between $362 and $545 in November.
The lowest price found in the past 5 days was $281 on Southwest (Nov 12-Nov 17).

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

The cheapest time of day to fly to New Hampshire is generally at night, when round-trip flights cost $352 on average. Morning departures are around 30% 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 $470.

What is the cheapest month to fly from San Diego to New Hampshire?

The cheapest month for flights from San Diego to New Hampshire is February, when tickets cost $405 (return) on average. On the other hand, the most expensive months are August and May, when the average cost of round-trip tickets is $1,078 and $1,046 respectively.

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

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

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

To get a below average price on the flight from San Diego to New Hampshire, you should book around 4 weeks before departure, which saves you about 47% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low season

January

Cheapest flight

$129
Best time to beat the crowds with an average 42% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from San Diego to Boston

FAQs - booking New Hampshire flights

  • How does KAYAK find such low prices on flights from San Diego 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 San Diego to New Hampshire.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from San Diego 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 San Diego 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 San Diego 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 San Diego 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 San Diego to New Hampshire up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to New Hampshire

  • Looking for a cheap flight? 25% of our users found tickets from San Diego to the following destinations at these prices or less: Boston $180 one-way - $304 round-trip

Reviews of the top airlines flying from San Diego to New Hampshire

 
Need help choosing which airline to fly with from San Diego 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 4188 reviews
8.0Comfort
8.6Crew
7.5Entertainment
7.0Food
8.1Boarding
Airline reviews

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

6.0 GoodAnonymous, Sep 2026
Read more Southwest reviews

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

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

Great job Southwest! My family doesn't fly often but we felt safe the whole time.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

The charges were ridiculous for an hour flight and the turbulence was very scary.

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

There was over a 9 hour delay for one thing after another. A toilet problem, they had to change the brakes, they had to refuel, three pilots times out, etc. We had to sit on the plane at the gate for over 5 hours with no air.

Had to pay for WiFi, delayed start, and sat on the runway forever.

More space for economy, and the bathroom size is only for people with size XS

Well, true to American Airlines, both of my flights were delayed. But it’s a good thing that American is so consistently incompetent because if the first flight was delayed in the second flight was on time then I might’ve had a problem..

Was not able to do a online check-in because the American Airlines system doesn't store our visa or other passport information, allowing us to have a trouble-free check-in. We were forced to have to check-in at the counter which Changes are upgrade status given that we were not able to check in much earlier.

The entertainment package was vast and the selections were very current. Keep updating it was great.

The seat was so hard my tailbone was aching The crew was kind of a b**** because I made a joke that I didn't care if they close the door I total c*** when she was trying to f****** act like she was mad at me because I said that The flight was bumpy. Sure you didnt have control over that.

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

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

Had to wait on pilot and crew to depart and had to wait to arrive at the gate because they only had 2 crews working. Delays, delays....Planes just keep getting smaller and tighter and they nickle and dime for everything. When will an airline actually wake up and make flying more enjoyable?

I paid for what I got which was cheap, I brought my own entertainment. I knew what to expect, so I could be prepared. If you’re flying economy, check in early like me. I have no problems with my flight, was on time, staff were friendly, and overall good experience.

More options for your flight from San Diego to New Hampshire

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