HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$141+ Cheap flights from New Hampshire to San Diego (SAN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SAN
May 28 — Jun 41
Thu 5/28
Thu 6/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from New Hampshire to San Diego with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from New Hampshire to San Diego

Cheapest flights from New Hampshire to San Diego
Explore the most affordable flight options available from New Hampshire to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 28, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:37 am
BOS
-
SAN
Nonstop6h 15m
JetBlue
Thu 6/48:44 pm
SAN
-
BOS
Nonstop5h 39m
JetBlue
Deal found 4/23$242
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:51 am
BOS
-
SAN
1 stop10h 26m
Delta
Tue 6/29:49 pm
SAN
-
BOS
Nonstop5h 41m
Delta
Deal found 4/23$243
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/115:15 pm
BOS
-
SAN
1 stop7h 45m
Delta
Sat 5/169:50 pm
SAN
-
BOS
Nonstop5h 41m
Delta
Deal found 4/23$244
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/115:15 pm
BOS
-
SAN
1 stop7h 45m
Delta
Tue 5/129:49 pm
SAN
-
BOS
Nonstop5h 41m
Delta
Deal found 4/23$245
This JetBlue deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/316:37 am
BOS
-
SAN
Nonstop6h 15m
JetBlue
Sat 6/69:10 pm
SAN
-
BOS
Nonstop5h 33m
JetBlue
Deal found 4/23$246
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:15 pm
BOS
-
SAN
Nonstop6h 21m
Delta
Sun 5/179:49 pm
SAN
-
BOS
Nonstop5h 41m
Delta
Deal found 4/23$247
This Southwest deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/144:30 pm
BOS
-
SAN
1 stop8h 25m
Southwest
Tue 8/189:30 pm
SAN
-
BOS
Nonstop5h 30m
Southwest
Deal found 4/23$248
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/45:10 pm
BOS
-
SAN
Nonstop6h 16m
Delta
Mon 7/209:53 pm
SAN
-
BOS
Nonstop5h 37m
Delta
Deal found 4/23$251
This JetBlue deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:00 am
BOS
-
SAN
Nonstop6h 15m
JetBlue
Fri 5/158:25 pm
SAN
-
BOS
Nonstop5h 39m
JetBlue
Deal found 4/23$252
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:51 am
BOS
-
SAN
1 stop8h 47m
Delta
Mon 6/110:15 pm
SAN
-
BOS
1 stop7h 51m
Delta
Deal found 4/23$253
This JetBlue deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/19:00 am
BOS
-
SAN
Nonstop6h 31m
JetBlue
Thu 6/48:44 pm
SAN
-
BOS
Nonstop5h 39m
JetBlue
Deal found 4/23$256
This American Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/35:59 pm
MHT
-
SAN
1 stop8h 40m
American Airlines
Wed 6/1010:05 am
SAN
-
MHT
1 stop10h 40m
American Airlines
Deal found 4/23$315

Find flight deals from New Hampshire to San Diego

Keep the following information in mind while searching for New Hampshire to San Diego flight deals. Data was last updated April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$242
(Cheapflightsfares)

One-way from

$141
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$432
Provider with most accurate pricing for Boston Logan Intl-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-San Diego flights.
Search Deals
From New Hampshire to San Diego
Search Deals
One-way flight from New Hampshire to San Diego
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from New Hampshire to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 28, 2026.
Use the filters below to find and compare flights from New Hampshire to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 8/22

5:00 am-9:50 am

1 stop7h 50m

San Diego

Mon 8/31

9:30 pm-6:00 am

Nonstop5h 30m

$262
Quickest round-trip

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 6/9

6:40 pm-10:09 pm

Nonstop6h 29m

San Diego

Sun 6/14

8:52 pm-5:40 am

Nonstop5h 48m

$267

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Fri 9/11

5:00 am-10:10 am

1 stop8h 10m

San Diego

Tue 9/22

9:30 pm-6:00 am

Nonstop5h 30m

$317

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 9/1

9:25 am-4:55 pm

2 stops10h 30m

San Diego

Wed 9/9

10:40 pm-9:50 am

1 stop8h 10m

$327

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 8/5

2:30 pm-8:45 pm

1 stop9h 15m

San Diego

Wed 8/12

11:10 am-12:05 am

2 stops9h 55m

$327

ManchesterSan Diego

MHT - SAN

MHTSAN

Manchester

Wed 6/3

3:45 pm-10:25 pm

1 stop9h 40m

San Diego

Wed 6/10

7:40 pm-8:40 am

2 stops10h 00m

$343

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 6/25

6:26 pm-11:54 pm

1 stop8h 28m

San Diego

Mon 6/29

10:40 pm-9:39 am

1 stop7h 59m

$346

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 7/30

7:55 am-2:45 pm

2 stops9h 50m

San Diego

Mon 8/3

2:35 pm-11:00 pm

Nonstop5h 25m

$346

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Fri 9/11

9:40 am-6:10 pm

2 stops11h 30m

San Diego

Mon 9/14

6:45 am-5:20 pm

1 stop7h 35m

$347

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 9/15

9:25 am-4:55 pm

2 stops10h 30m

San Diego

Thu 9/24

9:00 am-10:10 pm

2 stops10h 10m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from New Hampshire to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from New Hampshire with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

The best time to book flights from New Hampshire to San Diego is 23 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from New Hampshire to San Diego?

Currently, August is the cheapest month in which you can book a flight from New Hampshire to San Diego (average of $168). Flying from New Hampshire to San Diego in November is currently the most expensive (average of $421). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from New Hampshire to San Diego?

Related info for your journey

Find useful and relevant information for your journey from New Hampshire to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Diego from New Hampshire?

    If you book a flight to San Diego from New Hampshire, you will be flying to San Diego, which is the city’s only airport. San Diego (SAN) is located 2.6 mi from the center of San Diego.

  • How long is the flight from New Hampshire to San Diego?

    Departing from New Hampshire to San Diego will take you 6h 29m. The distance from New Hampshire to San Diego is about 2581 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from New Hampshire to San Diego?

    The most popular flight routes from New Hampshire to San Diego are Boston Logan Intl - San Diego, Manchester - San Diego and Portland - San Diego.

  • Can I find deals for flights from New Hampshire to San Diego that include hotel bookings?

    Yes. In addition to deals on New Hampshire to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from New Hampshire to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from New Hampshire to San Diego.

  • Can I find deals for business class flights from New Hampshire to San Diego?

    Yes. Cheapflights offers flight deals from New Hampshire to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from New Hampshire to San Diego?

    Currently, August is the cheapest month in which you can book a flight from New Hampshire to San Diego (average of $168). Flying from New Hampshire to San Diego in November is currently the most expensive (average of $421). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for New Hampshire to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
Newark to San Francisco flights
John F Kennedy Intl to San Francisco flights
LaGuardia to San Francisco flights
John F Kennedy Intl to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
Seattle to Las Vegas flights
Newark to Los Angeles flights
Newark to Las Vegas flights
San Francisco to Las Vegas flights
O'Hare Intl to Las Vegas flights
Seattle to Los Angeles flights
Dallas/Fort Worth to Las Vegas flights
Dulles Intl to Las Vegas flights
LaGuardia to Los Angeles flights
Dallas/Fort Worth to Los Angeles flights
San Francisco to Los Angeles flights
LaGuardia to Las Vegas flights
Los Angeles to Las Vegas flights
Dallas/Fort Worth to San Francisco flights
O'Hare Intl to Los Angeles flights
Los Angeles to San Francisco flights
Atlanta to Las Vegas flights
Seattle to San Francisco flights
Denver to Las Vegas flights
Stewart to San Francisco flights
Dulles Intl to Los Angeles flights
San Francisco to Santa Ana flights
Reagan-National to Los Angeles flights
Boston to Las Vegas flights
Burbank to Las Vegas flights
Baltimore to Las Vegas flights
Baltimore to Los Angeles flights
Detroit to Las Vegas flights
Ontario to San Francisco flights
Reagan-National to Las Vegas flights
John F Kennedy Intl to San Jose flights
Atlanta to Los Angeles flights
Dulles Intl to San Francisco flights
Boston to Los Angeles flights
Boston to San Francisco flights
Newark to San Jose flights
O'Hare Intl to San Francisco flights
Seattle to San Diego flights
Hobby to Las Vegas flights
John F Kennedy Intl to Oakland flights
Minneapolis to Las Vegas flights
Santa Ana to Las Vegas flights
Hobby to Los Angeles flights
San Jose to Las Vegas flights
San Francisco to San Diego flights

Top 2 airlines flying from New Hampshire to San Diego

Discover the top 2 airlines that operate flights from New Hampshire to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$262Average$440FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$351Average$466FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.