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San Diego

$123+ 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 3/21. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SAN
Apr 4 — Apr 111
Sat 4/4
Sat 4/11
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 March 5, 2026.

This SmartFares deal was found by Cheapflights users on 3/3. 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.
Mon 4/275:56 pm
BOS
-
SAN
Nonstop6h 33m
Alaska Airlines
Mon 5/46:34 pm
SAN
-
BOS
1 stop9h 38m
Alaska Airlines
Deal found 3/3$229
This SmartFares deal was found by Cheapflights users on 3/4. 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.
Tue 4/76:50 am
BOS
-
SAN
Nonstop6h 25m
JetBlue
Tue 4/148:35 pm
SAN
-
BOS
Nonstop5h 29m
JetBlue
Deal found 3/4$230
This Cheapflightsfares deal was found by Cheapflights users on 3/3. 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.
Sat 5/28:00 am
BOS
-
SAN
Nonstop6h 20m
JetBlue
Tue 5/58:30 pm
SAN
-
BOS
Nonstop5h 37m
JetBlue
Deal found 3/3$232
This Super.com deal was found by Cheapflights users on 3/5. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/244:00 pm
BOS
-
SAN
Nonstop6h 25m
JetBlue
Fri 5/18:30 pm
SAN
-
BOS
Nonstop5h 37m
JetBlue
Deal found 3/5$233
This Super.com deal was found by Cheapflights users on 3/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/134:00 pm
BOS
-
SAN
Nonstop6h 17m
JetBlue
Mon 5/183:15 pm
SAN
-
BOS
Nonstop5h 43m
JetBlue
Deal found 3/3$234
This JetBlue deal was found by Cheapflights users on 3/3. 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.
Sat 5/24:40 pm
BOS
-
SAN
Nonstop6h 23m
JetBlue
Sun 5/108:30 pm
SAN
-
BOS
Nonstop5h 37m
JetBlue
Deal found 3/3$237
This Orbitz deal was found by Cheapflights users on 3/3. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/54:00 pm
BOS
-
SAN
Nonstop6h 17m
Multiple Airlines
Tue 5/128:54 pm
SAN
-
BOS
Nonstop5h 50m
Multiple Airlines
Deal found 3/3$239
This SmartFares deal was found by Cheapflights users on 3/2. 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.
Mon 3/165:44 pm
BOS
-
SAN
Nonstop6h 45m
Hawaiian Airlines
Tue 3/248:00 am
SAN
-
BOS
Nonstop5h 40m
Hawaiian Airlines
Deal found 3/2$243
This Alaska Airlines deal was found by Cheapflights users on 3/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/304:33 pm
BOS
-
SAN
1 stop10h 26m
Alaska Airlines
Tue 5/128:54 pm
SAN
-
BOS
Nonstop5h 50m
Alaska Airlines
Deal found 3/3$247
This Cheapflightsfares deal was found by Cheapflights users on 3/3. 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 4/76:50 am
BOS
-
SAN
Nonstop6h 25m
JetBlue
Mon 4/138:25 pm
SAN
-
BOS
Nonstop5h 35m
JetBlue
Deal found 3/3$252
This JetBlue deal was found by Cheapflights users on 3/3. 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.
Sat 5/24:40 pm
BOS
-
SAN
Nonstop6h 23m
JetBlue
Thu 5/78:30 pm
SAN
-
BOS
Nonstop5h 37m
JetBlue
Deal found 3/3$254
This American Airlines deal was found by Cheapflights users on 3/5. 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.
Fri 3/201:44 pm
ORH
-
SAN
1 stop8h 39m
American Airlines
Tue 3/249:41 pm
SAN
-
ORH
1 stop12h 38m
American Airlines
Deal found 3/5$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 March 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$229
(SmartFares)

One-way from

$123
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$353
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 ($8 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 March 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 March 5, 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
Quickest round-trip

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 5/6

4:00 pm-7:17 pm

Nonstop6h 17m

San Diego

Tue 5/12

8:30 pm-5:07 am

Nonstop5h 37m

$237

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 4/29

5:44 pm-9:13 pm

Nonstop6h 29m

San Diego

Sun 5/3

9:59 pm-6:30 am

Nonstop5h 31m

$257

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 4/25

6:00 pm-11:15 pm

1 stop8h 15m

San Diego

Sun 5/3

10:40 pm-10:55 am

1 stop9h 15m

$257

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 3/18

5:45 am-11:50 am

1 stop9h 05m

San Diego

Sat 5/9

2:14 pm-12:59 am

1 stop7h 45m

$262

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 4/29

2:25 pm-9:30 pm

2 stops10h 05m

San Diego

Sat 5/9

8:20 pm-9:55 am

2 stops10h 35m

$267

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 6/2

2:25 pm-10:25 pm

1 stop11h 00m

San Diego

Thu 6/4

9:35 pm-6:00 am

Nonstop5h 25m

$267

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 5/26

8:05 am-11:32 am

Nonstop6h 27m

San Diego

Sat 5/30

4:40 pm-6:20 am

1 stop10h 40m

$272

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Mon 4/13

3:45 pm-10:30 pm

2 stops9h 45m

San Diego

Wed 4/15

7:40 pm-8:05 am

2 stops9h 25m

$287

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 4/8

2:25 pm-10:25 pm

1 stop11h 00m

San Diego

Sat 4/11

7:35 am-5:20 pm

1 stop6h 45m

$292

WorcesterSan Diego

ORH - SAN

ORHSAN

Worcester

Fri 3/20

1:44 pm-7:23 pm

1 stop8h 39m

San Diego

Tue 3/24

9:41 pm-1:19 pm

1 stop12h 38m

$312

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/3

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

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 July is currently the most expensive (average of $351). 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.

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 17m. 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 cheapest airlines to fly from New Hampshire to San Diego one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $143. Users have also found prices from $171 and $188 on Southwest and United Airlines, respectively.

  • 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, Portland - San Diego and Manchester - 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 July is currently the most expensive (average of $351). 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

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Alternative routes for New Hampshire to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from New Hampshire to San Diego

Discover the top 3 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 March 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$261Average$510FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$262Average$412FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$342Average$456FlexibilityNo cancel feeOn-time63%

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