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$119+ 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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SAN
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap 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 September 16, 2025.

Round-trip from

$227
(JetBlue)

One-way from

$119
(Alaska Airlines)

Popular in

December

Cheapest in

January

Average price

$358
From New Hampshire to San Diego
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One-way flight from New Hampshire to San Diego
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 16, 2025.

This JetBlue deal was found by Cheapflights users on 9/15. 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 12/67:45 amBOS - SAN
Nonstop6h 38mJetBlue
Tue 12/98:31 pmSAN - BOS
Nonstop5h 31mJetBlue
Deal found 9/15$227
This JetBlue deal was found by Cheapflights users on 9/16. 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.
Wed 11/1910:10 amBOS - SAN
Nonstop6h 32mJetBlue
Tue 12/28:31 pmSAN - BOS
Nonstop5h 31mJetBlue
Deal found 9/16$232
This lastminute.com deal was found by Cheapflights users on 9/15. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/37:00 amBOS - SAN
Nonstop6h 39mJetBlue
Wed 11/122:52 pmSAN - BOS
Nonstop5h 24mJetBlue
Deal found 9/15$235
This lastminute.com deal was found by Cheapflights users on 9/16. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/313:45 pmBOS - SAN
Nonstop6h 31mJetBlue
Fri 11/78:42 pmSAN - BOS
Nonstop5h 28mJetBlue
Deal found 9/16$236
This Hawaiian Airlines deal was found by Cheapflights users on 9/15. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:00 amBOS - SAN
1 stop12h 57mHawaiian Airlines
Wed 12/109:15 amSAN - BOS
Nonstop5h 37mHawaiian Airlines
Deal found 9/15$237
This JetBlue deal was found by Cheapflights users on 9/15. 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.
Tue 10/217:20 amBOS - SAN
Nonstop6h 29mJetBlue
Tue 10/211:55 pmSAN - BOS
Nonstop5h 35mJetBlue
Deal found 9/15$242
This Trip.com deal was found by Cheapflights users on 9/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/34:24 pmBOS - SAN
Nonstop6h 39mHawaiian Airlines
Wed 11/129:15 amSAN - BOS
Nonstop5h 40mHawaiian Airlines
Deal found 9/14$243
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Fri 12/57:00 amBOS - SAN
1 stop12h 57mAlaska Airlines
Wed 12/109:59 pmSAN - BOS
1 stop14h 38mAlaska Airlines
Deal found 9/15$246
This JetBlue deal was found by Cheapflights users on 9/16. 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.
Wed 10/227:20 amBOS - SAN
Nonstop6h 29mJetBlue
Sat 10/258:55 pmSAN - BOS
Nonstop5h 39mJetBlue
Deal found 9/16$247
This Southwest deal was found by Cheapflights users on 9/15. 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 12/59:05 amBOS - SAN
1 stop9h 10mSouthwest
Wed 12/1010:30 amSAN - BOS
2 stops9h 15mSouthwest
Deal found 9/15$252
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 10/304:17 pmORH - SAN
1 stop24h 19mAmerican Airlines
Thu 11/64:25 pmSAN - ORH
2 stops19h 37mAmerican Airlines
Deal found 9/15$274
This American Airlines deal was found by Cheapflights users on 9/15. 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 10/256:00 amMHT - SAN
1 stop8h 14mAmerican Airlines
Wed 11/510:49 pmSAN - MHT
1 stop9h 14mAmerican Airlines
Deal found 9/15$307

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 September 16, 2025.
Use the filters below to find and compare flights from New Hampshire to San Diego that are best for you.

Fly from

New Hampshire

Fly to

San Diego

Route

Depart

Return

Price

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 11/19

10:10 am-1:42 pm

Nonstop6h 32m

San Diego

Tue 12/2

8:31 pm-5:02 am

Nonstop5h 31m

$232

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 11/19

5:25 pm-8:58 pm

Nonstop6h 33m

San Diego

Tue 12/2

10:26 pm-6:55 am

Nonstop5h 29m

$232

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Fri 12/5

7:00 am-4:57 pm

1 stop12h 57m

San Diego

Wed 12/10

9:15 am-5:52 pm

Nonstop5h 37m

$237

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 11/5

4:24 pm-8:03 pm

Nonstop6h 39m

San Diego

Wed 11/12

9:15 am-5:55 pm

Nonstop5h 40m

$247

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 10/30

10:10 am-1:42 pm

Nonstop6h 32m

San Diego

Thu 11/6

11:50 am-8:26 pm

Nonstop5h 36m

$247

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Mon 11/3

4:24 pm-8:03 pm

Nonstop6h 39m

San Diego

Wed 11/5

9:15 am-5:55 pm

Nonstop5h 40m

$247

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Fri 12/5

7:00 am-4:57 pm

1 stop12h 57m

San Diego

Sat 12/13

9:15 am-5:52 pm

Nonstop5h 37m

$247

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Fri 10/24

5:25 pm-8:44 pm

Nonstop6h 19m

San Diego

Tue 10/28

10:15 pm-6:53 am

Nonstop5h 38m

$247

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 10/22

3:45 pm-7:05 pm

Nonstop6h 20m

San Diego

Tue 10/28

8:39 pm-5:10 am

Nonstop5h 31m

$247

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 10/22

7:20 am-10:49 am

Nonstop6h 29m

San Diego

Sat 10/25

8:55 pm-5:34 am

Nonstop5h 39m

$247

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 60 results
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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 $286). Flying from New Hampshire to San Diego in March is currently the most expensive (average of $366). 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.

What is the cheapest time of day to fly from NH to SAN?

Find hourly flight availability from New Hampshire to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from New Hampshire to San Diego as you normally would.

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 32m. 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 Delta. According to our data, you can fly for as low as $119. Users have also found prices from $119 and $154 on Alaska Airlines and American 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 $286). Flying from New Hampshire to San Diego in March is currently the most expensive (average of $366). 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
La Mesa
Poway
Lemon Grove
Coronado
Imperial Beach
National City

Browse thousands of different options on Cheapflights for your next trip

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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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$286Average$443FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$327Average$546FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$342Average$465FlexibilityNo cancel feeOn-time63%

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