$88 Find Cheap Flights from San Diego 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 San Diego to New Hampshire departing on 4/29. 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.
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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 San Diego 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 San Diego to New Hampshire, as well as popular online travel agencies
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Best New Hampshire Flight Deals from San Diego

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Boston
Bostonnonstop$197
Portland
Portland1 stop$277

Cheap Flight Deals from San Diego to New Hampshire (SAN-USNH)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Diego 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.

Recent round-trip flight deals from San Diego to New Hampshire

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from San Diego to New Hampshire.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
JetBlue Logo
8:30 pm - 5:18 amSAN-BOS
5h 48mnonstop
JetBlue Logo
3:55 pm - 7:15 pmBOS-SAN
6h 20mnonstop
$197JetBlue
Find Deal
Sat, May 3 - Sat, May 10
Delta Logo
9:44 pm - 6:20 amSAN-BOS
5h 36mnonstop
Delta Logo
5:10 pm - 8:29 pmBOS-SAN
6h 19mnonstop
$199Delta
Find Deal
Sat, May 17 - Sat, May 24
Alaska Airlines Logo
4:20 pm - 4:15 pmSAN-BOS
20h 55m1 stop
Alaska Airlines Logo
4:34 pm - 8:05 pmBOS-SAN
6h 31mnonstop
$207Alaska Airlines
Find Deal
Tue, Apr 29 - Sat, May 3
Spirit Airlines Logo
6:15 am - 6:58 pmSAN-BOS
33h 43m2 stops
Spirit Airlines Logo
9:46 am - 11:56 pmBOS-SAN
17h 10m2 stops
$210Spirit Airlines
Find Deal
Thu, May 8 - Mon, May 12
Alaska Airlines Logo
4:20 pm - 4:15 pmSAN-BOS
20h 55m1 stop
Alaska Airlines Logo
7:47 pm - 8:15 amBOS-SAN
15h 28m1 stop
$216Alaska Airlines
Find Deal
Tue, Apr 29 - Sat, May 3
American Airlines Logo
6:15 am - 4:48 pmSAN-BOS
7h 33m1 stop
American Airlines Logo
6:00 am - 10:59 amBOS-SAN
7h 59m1 stop
$217American Airlines
Find Deal
Sat, May 3 - Sat, May 10
American Airlines Logo
11:21 am - 10:02 pmSAN-BOS
7h 41m1 stop
American Airlines Logo
10:36 am - 6:29 pmBOS-SAN
10h 53m1 stop
$218American Airlines
Find Deal
Sat, May 17 - Sat, May 24
Spirit Airlines Logo
9:08 pm - 5:30 pmSAN-BOS
17h 22m2 stops
Spirit Airlines Logo
9:05 pm - 10:25 amBOS-SAN
16h 20m2 stops
$221Spirit Airlines
Find Deal
Tue, Apr 29 - Sun, May 4
Southwest Logo
9:40 pm - 2:55 pmSAN-BOS
14h 15m1 stop
Southwest Logo
5:50 am - 10:10 amBOS-SAN
7h 20m1 stop
$356Southwest
Find Deal
Sun, Jul 6 - Sat, Jul 12
Southwest Logo
11:15 am - 9:45 pmSAN-BOS
7h 30m1 stop
Southwest Logo
5:50 am - 4:25 pmBOS-SAN
13h 35m2 stops
$360Southwest
Find Deal
Sat, Apr 19 - Tue, Apr 29

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.

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

The average price for all round-trip flights from San Diego to New Hampshire depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to New Hampshire is generally in the afternoon, when round-trip flights cost $360 on average. Morning departures are around 37% 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 $540.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Diego 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 San Diego to New Hampshire is January, when tickets cost $262 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $467 and $465 respectively.

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

The average price of all round-trip flights from San Diego to New Hampshire clicked on KAYAK for each day over the last 12 months.
For San Diego to New Hampshire, Wednesday 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 Tuesday, with Sunday being the most expensive.

How far in advance should I book a flight from San Diego 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 San Diego 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 San Diego to New Hampshire, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low season

February

High season

July

Cheapest flight

$88
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 13% increase in price.
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.

See more FAQs

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 $168 one-way - $263 round-trip

Top airlines flying from San Diego to New Hampshire

 
See real verified KAYAK customer reviews for airlines flying from San Diego 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 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 4274 reviews
8.6Crew
7.1Food
7.6Entertainment
8.0Comfort
8.2Boarding
Airline reviews

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

10.0 ExcellentAnonymous, Mar 2025SNA - OAK
Read more Southwest reviews

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.

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 hell hole of an airport. It is the new LaGuardia. Everything Cobbled together. Security gates closed. Terri directional signage

I used to fly SWA all the time. I know the crew has their little acts that are often fun, and entertaining. On this flight one of the crew was just not nice. Very surprising.

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.

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.

After several delays and being rebooked onto a layer flight, I had to speak to three AA agents for baggage claim to get an attendant. All were in foul mode and reluctant to assist or offer any assistance.

Multiple maintenance delays and the missed and rebooked connection changed gates at least 6 times including one which had us walking 20 minutes to another terminal and then back again. Seated our family of three in different middle seats throughout the plane and then there was an empty seat next to me. Very long travel day which I would have never agreed to if I knew the itinerary would be changed at 5 am, 2 hours before takeoff.

Everything you need to know for your flight from San Diego to New Hampshire

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