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$128+ 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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SAN
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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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 October 22, 2025.

This Southwest deal was found by Cheapflights users on 10/19. 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
Tue 12/912:00 pmSAN - BOS
1 stop7h 15mSouthwest
Deal found 10/19$195
This Expedia deal was found by Cheapflights users on 10/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/87:40 amBOS - SAN
Nonstop6h 38mJetBlue
Wed 11/128:39 pmSAN - BOS
Nonstop5h 31mJetBlue
Deal found 10/21$197
This Southwest deal was found by Cheapflights users on 10/21. 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.
Mon 12/81:35 pmBOS - SAN
2 stops10h 35mSouthwest
Thu 12/1110:30 amSAN - BOS
2 stops9h 15mSouthwest
Deal found 10/21$198
This Southwest deal was found by Cheapflights users on 10/20. 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.
Sun 12/77:05 amBOS - SAN
1 stop8h 15mSouthwest
Mon 12/86:50 amSAN - BOS
1 stop9h 30mSouthwest
Deal found 10/20$203
This Southwest deal was found by Cheapflights users on 10/19. 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 12/51:35 pmBOS - SAN
2 stops10h 35mSouthwest
Wed 12/1010:30 amSAN - BOS
2 stops9h 15mSouthwest
Deal found 10/19$205
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/64:24 pmBOS - SAN
Nonstop6h 46mHawaiian Airlines
Sat 12/139:15 amSAN - BOS
Nonstop5h 37mHawaiian Airlines
Deal found 10/21$207
This Southwest deal was found by Cheapflights users on 10/20. 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.
Sat 12/69:20 amBOS - SAN
2 stops11h 35mSouthwest
Sat 12/137:35 pmSAN - BOS
2 stops9h 30mSouthwest
Deal found 10/20$209
This American Airlines deal was found by Cheapflights users on 10/21. 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 12/171:25 pmBOS - SAN
1 stop9h 18mAmerican Airlines
Sat 1/106:20 amSAN - BOS
1 stop11h 25mAmerican Airlines
Deal found 10/21$210
This American Airlines deal was found by Cheapflights users on 10/20. 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 11/53:27 pmORH - SAN
1 stop9h 17mAmerican Airlines
Sat 11/810:49 pmSAN - ORH
1 stop13h 13mAmerican Airlines
Deal found 10/20$292
This American Airlines deal was found by Cheapflights users on 10/21. 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.
Sun 12/712:10 pmMHT - SAN
1 stop9h 40mAmerican Airlines
Tue 12/910:23 pmSAN - MHT
1 stop9h 44mAmerican Airlines
Deal found 10/21$294
This American Airlines deal was found by Cheapflights users on 10/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:00 amMHT - SAN
1 stop8h 43mAmerican Airlines
Mon 11/1710:23 pmSAN - MHT
1 stop9h 40mAmerican Airlines
Deal found 10/22$329
This Southwest deal was found by Cheapflights users on 10/22. 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.
Fri 12/55:30 amPWM - SAN
1 stop12h 45mSouthwest
Tue 12/912:00 pmSAN - PWM
1 stop7h 15mSouthwest
Deal found 10/22$332

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 October 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$195
(Southwest)

One-way from

$128
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$364
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.
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From New Hampshire to San Diego
Search Deals
One-way flight from New Hampshire to San Diego
Search Deals
High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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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 October 22, 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

Sun 11/16

5:25 pm-8:58 pm

Nonstop6h 33m

San Diego

Tue 11/18

10:29 pm-6:55 am

Nonstop5h 26m

$217

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 11/19

5:25 pm-8:56 pm

Nonstop6h 31m

San Diego

Tue 12/2

10:20 pm-6:50 am

Nonstop5h 30m

$217

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sun 11/9

5:25 pm-8:58 pm

Nonstop6h 33m

San Diego

Fri 11/14

10:28 pm-6:55 am

Nonstop5h 27m

$217

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Fri 12/5

5:25 pm-8:59 pm

Nonstop6h 34m

San Diego

Sat 12/13

10:20 pm-6:50 am

Nonstop5h 30m

$222

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 12/6

6:52 pm-8:39 am

1 stop16h 47m

San Diego

Sat 12/13

9:15 am-5:52 pm

Nonstop5h 37m

$227

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sun 1/18

4:25 pm-8:05 pm

Nonstop6h 40m

San Diego

Mon 1/26

9:10 am-5:44 pm

Nonstop5h 34m

$227

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Fri 12/5

5:25 pm-8:59 pm

Nonstop6h 34m

San Diego

Mon 12/15

10:20 pm-6:50 am

Nonstop5h 30m

$227

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 1/8

2:40 pm-10:20 pm

1 stop10h 40m

San Diego

Sun 1/11

10:30 am-10:55 pm

1 stop9h 25m

$230

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sun 12/7

4:24 pm-8:10 pm

Nonstop6h 46m

San Diego

Thu 12/11

6:30 pm-7:29 am

1 stop9h 59m

$237

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 11/8

4:24 pm-8:03 pm

Nonstop6h 39m

San Diego

Wed 11/12

6:15 am-12:20 am

1 stop15h 05m

$242

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

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 $168). Flying from New Hampshire to San Diego in April is currently the most expensive (average of $359). 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 October 22, 2025.

A simple way to save on the total cost of your ticket is to fly from New Hampshire to San Diego in the evening. If you’re flexible enough to do this you can expect to save up to 73% on your trip compared to booking a flight at noon.

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 33m. 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 Southwest. According to our data, you can fly for as low as $138. Users have also found prices from $139 and $140 on Delta 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 $168). Flying from New Hampshire to San Diego in April is currently the most expensive (average of $359). 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
Coronado
La Mesa
Poway
Lemon Grove
Imperial Beach
National City

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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 October 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$286Average$442FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$312Average$532FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$342Average$468FlexibilityNo cancel feeOn-time63%

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