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$90+ 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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SAN
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 December 4, 2025.

This American Airlines deal was found by Cheapflights users on 12/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/176:00 amBOS - SAN
1 stop8h 43mAmerican Airlines
Sat 1/109:21 amSAN - BOS
1 stop8h 32mAmerican Airlines
Deal found 12/3$241
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/164:24 pmBOS - SAN
Nonstop6h 46mAlaska Airlines
Thu 12/259:35 amSAN - BOS
Nonstop5h 48mAlaska Airlines
Deal found 12/2$254
This JetBlue deal was found by Cheapflights users on 12/2. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/167:00 amBOS - SAN
Nonstop6h 39mJetBlue
Wed 12/248:44 pmSAN - BOS
Nonstop5h 25mJetBlue
Deal found 12/2$272
This Priceline deal was found by Cheapflights users on 12/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/167:00 amBOS - SAN
Nonstop6h 39mJetBlue
Wed 1/79:30 pmSAN - BOS
Nonstop5h 25mJetBlue
Deal found 12/2$273
This American Airlines deal was found by Cheapflights users on 12/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/176:00 amBOS - SAN
1 stop8h 43mAmerican Airlines
Thu 1/1510:50 amSAN - BOS
1 stop8h 05mAmerican Airlines
Deal found 12/3$295
This Southwest deal was found by Cheapflights users on 12/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:20 amBOS - SAN
1 stop12h 55mSouthwest
Wed 1/79:40 amSAN - BOS
2 stops9h 25mSouthwest
Deal found 12/3$301
This Expedia deal was found by Cheapflights users on 12/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/166:52 pmBOS - SAN
1 stop16h 47mMultiple Airlines
Wed 1/79:30 pmSAN - BOS
Nonstop5h 25mMultiple Airlines
Deal found 12/2$308
This Southwest deal was found by Cheapflights users on 12/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:15 amBOS - SAN
1 stop7h 55mSouthwest
Thu 1/1510:30 amSAN - BOS
1 stop9h 45mSouthwest
Deal found 12/3$320
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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.
Sat 12/204:45 pmBOS - SAN
Nonstop6h 33mAlaska Airlines
Sat 12/276:59 pmSAN - BOS
1 stop9h 49mAlaska Airlines
Deal found 12/3$322
This American Airlines deal was found by Cheapflights users on 12/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/221:45 pmORH - SAN
2 stops22h 03mAmerican Airlines
Thu 1/81:58 pmSAN - ORH
2 stops20h 55mAmerican Airlines
Deal found 12/4$325
This Southwest deal was found by Cheapflights users on 12/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/162:10 pmBOS - SAN
1 stop10h 25mSouthwest
Wed 12/176:50 amSAN - BOS
1 stop9h 30mSouthwest
Deal found 12/3$331
This American Airlines deal was found by Cheapflights users on 12/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/163:34 pmORH - SAN
1 stop9h 10mAmerican Airlines
Sat 12/204:38 pmSAN - ORH
2 stops17h 39mAmerican Airlines
Deal found 12/2$392

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 December 4, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$179
(Southwest)

One-way from

$90
(Southwest)

Popular in

December

Cheapest in

January

Average price

$456
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
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 4, 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

ManchesterSan Diego

MHT - SAN

MHTSAN

Manchester

Wed 2/4

5:55 am-2:20 pm

1 stop11h 25m

San Diego

Tue 2/10

7:40 pm-8:35 am

2 stops9h 55m

$184

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 2/11

5:10 pm-8:50 pm

Nonstop6h 40m

San Diego

Sat 2/14

9:58 pm-6:25 am

Nonstop5h 27m

$232

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 2/4

5:10 pm-8:50 pm

Nonstop6h 40m

San Diego

Sat 2/7

10:04 pm-6:30 am

Nonstop5h 26m

$232

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 2/10

5:10 pm-8:50 pm

Nonstop6h 40m

San Diego

Wed 2/18

9:58 pm-6:25 am

Nonstop5h 27m

$232

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 1/17

5:10 pm-8:50 pm

Nonstop6h 40m

San Diego

Wed 1/21

10:04 pm-6:30 am

Nonstop5h 26m

$232

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 2/4

1:20 pm-9:00 pm

1 stop10h 40m

San Diego

Sun 2/8

6:20 am-4:50 pm

1 stop7h 30m

$233

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 1/7

5:10 pm-8:50 pm

Nonstop6h 40m

San Diego

Thu 1/8

10:04 pm-6:30 am

Nonstop5h 26m

$237

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Mon 2/2

5:10 pm-8:50 pm

Nonstop6h 40m

San Diego

Tue 2/10

10:04 pm-6:30 am

Nonstop5h 26m

$237

PortlandSan Diego

PWM - SAN

PWMSAN

Portland

Sat 1/10

3:58 pm-10:58 pm

1 stop10h 00m

San Diego

Wed 1/14

10:09 am-11:43 pm

2 stops10h 34m

$240

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 2/11

6:50 am-4:45 pm

2 stops12h 55m

San Diego

Sun 2/15

6:20 am-4:30 pm

1 stop7h 10m

$240

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

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 $360). 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 December 4, 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 40m. 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, 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 April is currently the most expensive (average of $360). 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
Julian
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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$261Average$516FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$286Average$418FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$351Average$475FlexibilityNo cancel feeOn-time63%

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