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San Diego

$143+ 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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SAN
Jun 12 — Jun 191
Fri 6/12
Fri 6/19
1 adult, Economy
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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 May 13, 2026.

This United Airlines deal was found by Cheapflights users on 5/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:00 am
BOS
-
SAN
1 stop8h 08m
United Airlines
Sun 11/810:30 pm
SAN
-
BOS
1 stop7h 54m
United Airlines
Deal found 5/12$247
This United Airlines deal was found by Cheapflights users on 5/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/283:54 pm
BOS
-
SAN
1 stop8h 30m
United Airlines
Tue 6/210:40 pm
SAN
-
BOS
1 stop7h 49m
United Airlines
Deal found 5/12$252
This Kissandfly.com deal was found by Cheapflights users on 5/13. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/410:49 am
BOS
-
SAN
1 stop10h 33m
Alaska Airlines
Sat 7/118:52 pm
SAN
-
BOS
Nonstop5h 48m
Alaska Airlines
Deal found 5/13$254
This American Airlines deal was found by Cheapflights users on 5/10. 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.
Tue 9/223:07 pm
BOS
-
SAN
1 stop8h 27m
American Airlines
Tue 9/2912:05 pm
SAN
-
BOS
1 stop8h 05m
American Airlines
Deal found 5/10$256
This United Airlines deal was found by Cheapflights users on 5/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/285:45 am
BOS
-
SAN
1 stop8h 04m
United Airlines
Sun 5/3110:30 pm
SAN
-
BOS
1 stop8h 23m
United Airlines
Deal found 5/12$257
This American Airlines deal was found by Cheapflights users on 5/10. 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.
Sat 7/46:00 am
BOS
-
SAN
1 stop8h 20m
American Airlines
Sat 7/117:15 pm
SAN
-
BOS
1 stop7h 30m
American Airlines
Deal found 5/10$258
This Delta deal was found by Cheapflights users on 5/8. 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.
Wed 6/35:15 pm
BOS
-
SAN
Nonstop6h 21m
Delta
Wed 6/109:54 pm
SAN
-
BOS
Nonstop5h 36m
Delta
Deal found 5/8$262
This lol.travel deal was found by Cheapflights users on 5/9. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/306:40 pm
BOS
-
SAN
Nonstop6h 29m
Alaska Airlines
Sat 6/68:54 pm
SAN
-
BOS
Nonstop5h 50m
Alaska Airlines
Deal found 5/9$264
This Delta deal was found by Cheapflights users on 5/12. 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 6/65:10 pm
BOS
-
SAN
Nonstop6h 21m
Delta
Wed 6/109:54 pm
SAN
-
BOS
Nonstop5h 36m
Delta
Deal found 5/12$267
This American Airlines deal was found by Cheapflights users on 5/12. 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 5/2712:32 pm
BOS
-
SAN
1 stop9h 03m
American Airlines
Wed 6/101:19 pm
SAN
-
BOS
1 stop8h 09m
American Airlines
Deal found 5/12$272
This SmartFares deal was found by Cheapflights users on 5/13. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/46:37 am
BOS
-
SAN
Nonstop6h 15m
JetBlue
Wed 6/108:44 pm
SAN
-
BOS
Nonstop5h 37m
JetBlue
Deal found 5/13$275
This American Airlines deal was found by Cheapflights users on 5/11. 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.
Tue 6/95:18 pm
ORH
-
SAN
2 stops18h 41m
American Airlines
Tue 6/169:55 pm
SAN
-
ORH
1 stop15h 58m
American Airlines
Deal found 5/11$312

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 May 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$247
(United Airlines)

One-way from

$143
(American Airlines)

Popular in

December

Cheapest in

January

Average price

$350
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 ($10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 13, 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

Thu 5/28

5:45 am-10:49 am

1 stop8h 04m

San Diego

Sun 5/31

10:30 pm-9:53 am

1 stop8h 23m

$257

WorcesterSan Diego

ORH - SAN

ORHSAN

Worcester

Tue 6/9

5:18 pm-8:59 am

2 stops18h 41m

San Diego

Tue 6/16

9:55 pm-4:53 pm

1 stop15h 58m

$312

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 8/11

10:05 am-6:20 pm

2 stops11h 15m

San Diego

Tue 8/18

10:40 pm-9:55 am

1 stop8h 15m

$327

WorcesterSan Diego

ORH - SAN

ORHSAN

Worcester

Thu 6/11

5:18 pm-8:22 am

2 stops18h 04m

San Diego

Wed 6/17

9:55 pm-4:53 pm

1 stop15h 58m

$327

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 8/1

5:10 am-9:50 am

1 stop7h 40m

San Diego

Thu 8/6

9:30 pm-6:00 am

Nonstop5h 30m

$327

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 5/28

7:20 am-4:21 pm

1 stop12h 01m

San Diego

Mon 6/8

8:54 pm-5:44 am

Nonstop5h 50m

$332

WorcesterSan Diego

ORH - SAN

ORHSAN

Worcester

Thu 6/11

5:18 pm-8:22 am

2 stops18h 04m

San Diego

Thu 6/18

9:55 pm-4:53 pm

1 stop15h 58m

$338
Quickest round-trip

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 8/11

9:05 am-12:00 pm

Nonstop5h 55m

San Diego

Mon 8/17

9:30 pm-6:00 am

Nonstop5h 30m

$347

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 6/10

7:44 pm-9:10 am

1 stop16h 26m

San Diego

Sat 6/13

8:52 pm-5:40 am

Nonstop5h 48m

$357

WorcesterSan Diego

ORH - SAN

ORHSAN

Worcester

Tue 5/26

5:18 pm-11:51 am

2 stops21h 33m

San Diego

Sat 5/30

9:55 pm-4:53 pm

1 stop15h 58m

$362

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/11

Showing 1-10 of 60 resultsSorted by cheapest first
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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 8h 04m. 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
Poway
La Mesa
Julian
Lemon Grove

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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 May 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$262Average$446FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$351Average$465FlexibilityNo cancel feeOn-time63%

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