$147 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 6/16. 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
Bostonnonstop$249
Portland
Portland1 stop$399
Boston
Bostonnonstop$249
Portland
Portland1 stop$399

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

Mon, May 18 - Sun, May 24
JetBlue Logo
8:30 pm - 5:09 am
SAN
-
BOS
5h 39mnonstop
JetBlue Logo
6:37 am - 9:52 am
BOS
-
SAN
6h 15mnonstop
$249JetBlue
Sat, May 16 - Tue, May 19
American Airlines Logo
6:40 am - 7:56 pm
SAN
-
BOS
10h 16m
1 stop
American Airlines Logo
6:00 am - 11:17 am
BOS
-
SAN
8h 17m
1 stop
$257American Airlines
Mon, May 18 - Sun, May 24
Alaska Airlines Logo
8:54 pm - 5:44 am
SAN
-
BOS
5h 50mnonstop
Alaska Airlines Logo
7:20 am - 4:21 pm
BOS
-
SAN
12h 01m
1 stop
$258Alaska Airlines
Fri, May 22 - Thu, May 28
JetBlue Logo
8:44 pm - 5:23 am
SAN
-
BOS
5h 39mnonstop
JetBlue Logo
4:15 pm - 7:33 pm
BOS
-
SAN
6h 18mnonstop
$264JetBlue
Wed, Jun 3 - Wed, Jun 10
American Airlines Logo
9:55 pm - 9:56 am
SAN
-
BOS
9h 01m
1 stop
American Airlines Logo
2:27 pm - 9:48 pm
BOS
-
SAN
10h 21m
1 stop
$267American Airlines
Wed, Jul 15 - Wed, Jul 29
United Airlines Logo
2:00 pm - 1:08 am
SAN
-
BOS
8h 08m
1 stop
United Airlines Logo
5:45 am - 10:49 am
BOS
-
SAN
8h 04m
1 stop
$273United Airlines
Tue, May 19 - Wed, Jun 3
Multiple Airlines Logo
12:54 pm - 11:06 am
SAN
-
BOS
19h 12m
1 stop
Multiple Airlines Logo
8:44 am - 11:50 pm
BOS
-
SAN
18h 06m
2 stops
$275Multiple Airlines
Sat, May 23 - Sat, May 30
United Airlines Logo
12:57 pm - 11:59 pm
SAN
-
MHT
8h 02m
1 stop
United Airlines Logo
2:37 pm - 8:23 pm
MHT
-
SAN
8h 46m
1 stop
$377United Airlines
Mon, May 11 - Fri, May 15
Multiple Airlines Logo
12:33 pm - 2:31 pm
SAN
-
PWM
22h 58m
1 stop
Multiple Airlines Logo
9:52 am - 11:50 pm
PWM
-
SAN
40h 58m
2 stops
$422Multiple Airlines
Sun, May 24 - Sun, May 31
Southwest Logo
10:30 pm - 11:30 am
SAN
-
MHT
10h 00m
1 stop
Southwest Logo
8:50 am - 3:15 pm
MHT
-
SAN
9h 25m
1 stop
$457Southwest
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?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Diego to New Hampshire departing in May.

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 at night, when round-trip flights cost $333 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 $453.

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 October, when tickets cost $208 (return) on average. On the other hand, the most expensive months are March and May, when the average cost of round-trip tickets is $929 and $422 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 Wednesday, 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 49% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$147
Best time to beat the crowds with an average 34% drop in price.
Most popular time to fly and prices are also 29% 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 $169 one-way - $305 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.
8.0
SouthwestOverall score based on 4314 reviews
7.0Food
8.0Comfort
8.1Boarding
8.6Crew
7.5Entertainment
Airline reviews

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

10.0 Excellentlarry, Apr 2026
LGB - PHX
Read more Southwest reviews

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

Delayed flight, lack of information, boarding process is a mess as is the carryon luggage causing issues when leaving the plane….just a poor experience.

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

The crew was very kind and made going to Hawaii relaxing and fun to look forward to! Thank you Southwest for a pleasant flight!

Terrible. Even though there’s assigned seating now, they are still the slowest boarding airline of anyone.

It was good from LAX to Phoenix, But the connection in Phoenix to Tulsa was not that great. The staff on both flights were great. The choice of free entertainment was ok nothing to brag about. The 45 min delay because of some electrical issue wasn't great from Phoenix to Tulsa. We sat there with hardly any air, The seat I had was between windows so the side of the plane pushed in on you. My being a bigger man it then made the seating area uncomfortable. The seats on the plane had no power to connect to recharge your phone or anything. I would recommend that they should look into a slot or clamp to hold your phone to enjoy while watching the entertainment choices hands-free. Also make it possible to raise the inner seat by the window be able to raise the arm rest up to make more room for larger people to set more comfortably. I would also say other then that stop price gouging the airfare or nickel and diming everything. Not fair for people having to fly for emergencies and be paying for higher prices due to the season or holidays. Your making your money either way and the cost of flying is still going to be the same regardless if there's 100 people or 200 people.

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

Boarding was easy. The seats are small and fairly uncomfortable

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

Left early arrived early..right amount of talking from pilots..of course had to love the biscuit and water!

Boarding gate at LAX was too crowded—two gates next to one another

On time departure and early arrival. Flight attendant very nice.

The SFO Lounge crew were amazing. The bartender Faris was great. Thanks!

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.

Good flight, seated and had a water within 5 minutes. Crew was hospitable.

We left at 1030 am pacific from LA and supposed to land at 7 pm Eastern in NY. They made a detour, stopped in Philadelphia and didn’t land till 1130 PM Eastern!!! Worst flight experience with no pilot communication with no explanation as to what was going on. Everyone was very frustrated to say the least.

Flight boarded from Gate 159B, the farthest gate in the LAX Bradley Terminal. While the flight operated on time, the first class cabin attendant made no recognition of my being an Advantage Executive Platinum member.

The flight itself was excellent but the gate attendant made me check my carryon since she said it was an inch too big. I’ve had no problems with this carryon on recent flights on Qantas, Delta, Austrian, Southwest Airlines even though the overhead bins are the same size. there were other carryons in the bins that also looked larger than mine and there was room left in the bins for more. When I picked up my carryon from baggage claim one of the wheels had broken off.

I was in last row so that is never great bc the person in front of me leaned his seat all the way back into me.

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

Information on your arrival and departure airports