$119 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 1/13. 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, 0 bags

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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Cheap Flights from San Diego to New Hampshire

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boston
Boston2 stops$209
Portland
Portland1 stop$393
Boston
Boston2 stops$209
Portland
Portland1 stop$393

Book Cheap San Diego to New Hampshire Plane Tickets

 
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.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Tue, Jan 13 - Wed, Jan 21
Multiple Airlines Logo
7:10 am - 1:13 am
SAN
-
BOS
39h 03m2 stops
Multiple Airlines Logo
4:20 pm - 8:00 pm
BOS
-
SAN
6h 40mnonstop
$209Multiple Airlines
Tue, Jan 13 - Wed, Jan 21
Multiple Airlines Logo
12:00 pm - 1:13 am
SAN
-
BOS
34h 13m2 stops
Multiple Airlines Logo
4:20 pm - 8:00 pm
BOS
-
SAN
6h 40mnonstop
$210Multiple Airlines
Tue, Jan 13 - Wed, Jan 21
Delta Logo
10:04 pm - 6:30 am
SAN
-
BOS
5h 26mnonstop
Delta Logo
5:10 pm - 8:50 pm
BOS
-
SAN
6h 40mnonstop
$217Delta
Tue, Jan 13 - Wed, Jan 21
Frontier Logo
7:10 am - 1:13 am
SAN
-
BOS
39h 03m2 stops
Frontier Logo
6:00 am - 10:54 am
BOS
-
SAN
31h 54m2 stops
$221Frontier
Tue, Jan 13 - Wed, Jan 21
Frontier Logo
7:10 am - 1:13 am
SAN
-
BOS
39h 03m2 stops
Frontier Logo
6:00 am - 11:31 pm
BOS
-
SAN
20h 31m2 stops
$223Frontier
Tue, Jan 13 - Tue, Jan 20
American Airlines Logo
10:09 am - 8:32 pm
SAN
-
BOS
7h 23m1 stop
American Airlines Logo
8:50 am - 3:03 pm
BOS
-
SAN
9h 13m1 stop
$228American Airlines
Tue, Jan 27 - Tue, Feb 3
Southwest Logo
9:40 am - 10:30 pm
SAN
-
BOS
9h 50m2 stops
Southwest Logo
5:30 pm - 11:05 pm
BOS
-
SAN
8h 35m1 stop
$242Southwest
Sat, Feb 21 - Wed, Feb 25
Southwest Logo
9:45 pm - 8:05 am
SAN
-
MHT
7h 20m1 stop
Southwest Logo
3:25 pm - 9:00 pm
MHT
-
SAN
8h 35m1 stop
$372Southwest
Wed, Feb 18 - Sun, Feb 22
American Airlines Logo
6:35 am - 6:03 pm
SAN
-
PWM
8h 28m1 stop
American Airlines Logo
11:28 am - 6:50 pm
PWM
-
SAN
10h 22m1 stop
$393American Airlines
Wed, Jan 21 - Sun, Jan 25
Delta Logo
7:00 am - 12:20 am
SAN
-
PWM
14h 20m2 stops
Delta Logo
2:35 pm - 8:22 pm
PWM
-
SAN
8h 47m1 stop
$403Delta
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.

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 $264 (return) on average. On the other hand, the most expensive months are December and April, when the average cost of round-trip tickets is $467 and $391 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 4 weeks before departure, which saves you about 48% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$119
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 4% 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.

  • 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 $327 on average. Morning departures are around 38% 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 $465.

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 $192 one-way - $287 round-trip

Reviews of the 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.
7.9
SouthwestOverall score based on 4250 reviews
7.5Entertainment
8.1Boarding
7.0Food
8.6Crew
8.0Comfort
Airline reviews

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.

8.0 ExcellentRussell, Dec 2025
SAN - OAK
Read more Southwest reviews

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.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

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

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

Horrible. Both legs of my flight were delayed more than 6 hours. No compensation, no screens on the plane, and the plane was not clean.

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

The flight was flawless and we even arrived between 20 and 25 minutes early!

Always seated jammed in rear of aircraft Admirals Club food at DFW terminal D was absolute worst food experience and I pay $600/year to eat this dried out junk

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

It was a red eye flight, so no meals were provided, but it was fine with snacks. The seats felt cramped and almost too narrow.

Very crowded flight but what can you expect these days?? Crew was accommodating.

The seats in economy were appeared to be quite thin and lack sufficient cushioning to be comfortable. Perhaps it was my seating position but the plane seemed notably load.

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.

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

Information on your arrival and departure airports