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$129+ 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SAN
Apr 25 — May 21
Sat 4/25
Sat 5/2
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 26, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 3/24. 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 4/286:00 am
BOS
-
SAN
Nonstop6h 24m
JetBlue
Tue 4/288:35 pm
SAN
-
BOS
Nonstop5h 29m
JetBlue
Deal found 3/24$232
This Delta deal was found by Cheapflights users on 3/24. 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 5/55:44 pm
BOS
-
SAN
Nonstop6h 29m
Delta
Wed 5/139:49 pm
SAN
-
BOS
Nonstop5h 41m
Delta
Deal found 3/24$237
This Delta deal was found by Cheapflights users on 3/26. 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 4/226:10 pm
BOS
-
SAN
1 stop8h 28m
Delta
Wed 4/299:59 pm
SAN
-
BOS
Nonstop5h 31m
Delta
Deal found 3/26$247
This Southwest deal was found by Cheapflights users on 3/22. 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.
Wed 6/32:30 pm
BOS
-
SAN
1 stop10h 10m
Southwest
Tue 6/92:35 pm
SAN
-
BOS
Nonstop5h 25m
Southwest
Deal found 3/22$249
This United Airlines deal was found by Cheapflights users on 3/25. 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.
Tue 4/287:20 am
BOS
-
SAN
1 stop9h 31m
United Airlines
Tue 4/286:22 pm
SAN
-
BOS
1 stop8h 59m
United Airlines
Deal found 3/25$252
This Delta deal was found by Cheapflights users on 3/25. 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 4/156:10 pm
BOS
-
SAN
1 stop8h 28m
Delta
Tue 4/219:45 pm
SAN
-
BOS
1 stop8h 49m
Delta
Deal found 3/25$257
This Southwest deal was found by Cheapflights users on 3/22. 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.
Wed 4/2911:40 am
BOS
-
SAN
1 stop10h 15m
Southwest
Tue 5/56:20 am
SAN
-
BOS
1 stop7h 55m
Southwest
Deal found 3/22$258
This Southwest deal was found by Cheapflights users on 3/24. 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.
Thu 6/44:30 pm
BOS
-
SAN
Nonstop6h 10m
Southwest
Tue 6/92:35 pm
SAN
-
BOS
Nonstop5h 25m
Southwest
Deal found 3/24$261
This Southwest deal was found by Cheapflights users on 3/25. 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.
Tue 5/55:35 am
BOS
-
SAN
2 stops9h 35m
Southwest
Tue 5/1212:00 pm
SAN
-
BOS
1 stop7h 40m
Southwest
Deal found 3/25$262
This Delta deal was found by Cheapflights users on 3/26. 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 4/295:44 pm
BOS
-
SAN
Nonstop6h 29m
Delta
Sat 5/29:59 pm
SAN
-
BOS
Nonstop5h 31m
Delta
Deal found 3/26$263
This American Airlines deal was found by Cheapflights users on 3/24. 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 4/215:21 pm
MHT
-
SAN
1 stop8h 28m
American Airlines
Tue 4/2810:30 pm
SAN
-
MHT
1 stop8h 27m
American Airlines
Deal found 3/24$275
This American Airlines deal was found by Cheapflights users on 3/24. 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 5/125:21 pm
MHT
-
SAN
1 stop8h 28m
American Airlines
Tue 5/1910:40 pm
SAN
-
MHT
1 stop10h 02m
American Airlines
Deal found 3/24$277

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 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$232
(Cheapflightsfares)

One-way from

$129
(American Airlines)

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. 3% potential increase in price ($12 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 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 26, 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

Wed 6/3

2:30 pm-9:40 pm

1 stop10h 10m

San Diego

Tue 6/9

2:35 pm-11:00 pm

Nonstop5h 25m

$249

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 6/4

5:15 pm-8:36 pm

Nonstop6h 21m

San Diego

Tue 6/9

7:10 pm-7:35 am

1 stop9h 25m

$273

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 4/23

3:45 pm-11:10 pm

1 stop10h 25m

San Diego

Wed 4/29

7:35 pm-8:05 am

2 stops9h 30m

$289

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 5/13

2:30 pm-9:40 pm

1 stop10h 10m

San Diego

Mon 5/18

10:40 pm-11:00 am

1 stop9h 20m

$296

WorcesterSan Diego

ORH - SAN

ORHSAN

Worcester

Sat 4/25

2:39 pm-11:17 am

1 stop23h 38m

San Diego

Sat 5/2

10:30 pm-2:14 pm

1 stop12h 44m

$304

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 6/6

5:10 am-9:50 am

1 stop7h 40m

San Diego

Sun 6/7

2:35 pm-11:00 pm

Nonstop5h 25m

$309

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 6/4

3:55 pm-11:20 pm

1 stop10h 25m

San Diego

Mon 6/8

7:50 pm-8:00 am

2 stops9h 10m

$310

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 5/28

4:45 pm-10:00 pm

1 stop8h 15m

San Diego

Fri 6/5

2:35 pm-11:00 pm

Nonstop5h 25m

$323

WorcesterSan Diego

ORH - SAN

ORHSAN

Worcester

Mon 4/27

2:39 pm-10:09 am

2 stops22h 30m

San Diego

Fri 5/1

4:41 pm-2:14 pm

2 stops18h 33m

$331

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 5/30

5:45 am-10:38 am

1 stop7h 53m

San Diego

Wed 6/10

10:40 pm-9:39 am

1 stop7h 59m

$333

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

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 March is currently the most expensive (average of $356). 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 21m. 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 March is currently the most expensive (average of $356). 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

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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 March 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$262Average$416FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$351Average$466FlexibilityNo cancel feeOn-time63%

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