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San Diego

$122+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SAN
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
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 February 4, 2026.

This Alaska Airlines deal was found by Cheapflights users on 2/1. 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.
Sun 2/225:44 pm
BOS
-
SAN
Nonstop6h 45m
Alaska Airlines
Wed 2/258:50 am
SAN
-
BOS
Nonstop5h 34m
Alaska Airlines
Deal found 2/1$232
This Super.com deal was found by Cheapflights users on 2/1. 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.
Tue 3/37:10 am
BOS
-
SAN
Nonstop6h 34m
JetBlue
Tue 3/108:44 pm
SAN
-
BOS
Nonstop5h 16m
JetBlue
Deal found 2/1$233
This Cheapflightsfares deal was found by Cheapflights users on 2/3. 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.
Wed 3/256:30 am
BOS
-
SAN
Nonstop6h 31m
JetBlue
Tue 3/318:25 pm
SAN
-
BOS
Nonstop5h 35m
JetBlue
Deal found 2/3$236
This Alaska Airlines deal was found by Cheapflights users on 2/4. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/115:44 pm
BOS
-
SAN
Nonstop6h 45m
Alaska Airlines
Tue 3/178:50 am
SAN
-
BOS
Nonstop5h 34m
Alaska Airlines
Deal found 2/4$237
This American Airlines deal was found by Cheapflights users on 1/31. 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 2/2612:59 pm
BOS
-
SAN
1 stop9h 25m
American Airlines
Tue 3/1010:35 pm
SAN
-
BOS
1 stop9h 11m
American Airlines
Deal found 1/31$238
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/265:44 pm
BOS
-
SAN
Nonstop6h 45m
Hawaiian Airlines
Wed 3/48:50 am
SAN
-
BOS
Nonstop5h 34m
Hawaiian Airlines
Deal found 2/3$239
This Vliegwinkel deal was found by Cheapflights users on 2/2. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/235:44 pm
BOS
-
SAN
Nonstop6h 45m
Multiple Airlines
Tue 3/38:50 am
SAN
-
BOS
Nonstop5h 34m
Multiple Airlines
Deal found 2/2$241
This Delta deal was found by Cheapflights users on 2/1. 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.
Sun 2/225:05 pm
BOS
-
SAN
Nonstop6h 40m
Delta
Thu 2/269:55 pm
SAN
-
BOS
Nonstop5h 30m
Delta
Deal found 2/1$242
This Super.com deal was found by Cheapflights users on 2/2. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/244:00 pm
BOS
-
SAN
Nonstop6h 28m
JetBlue
Fri 2/273:35 pm
SAN
-
BOS
Nonstop5h 13m
JetBlue
Deal found 2/2$243
This American Airlines deal was found by Cheapflights users on 2/3. 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.
Tue 3/31:30 pm
ORH
-
SAN
1 stop11h 29m
American Airlines
Tue 3/109:41 pm
SAN
-
ORH
1 stop12h 38m
American Airlines
Deal found 2/3$292
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Fri 3/61:30 pm
ORH
-
SAN
2 stops22h 14m
American Airlines
Thu 3/123:19 pm
SAN
-
ORH
2 stops19h 00m
American Airlines
Deal found 2/2$307
This American Airlines deal was found by Cheapflights users on 2/3. 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.
Fri 4/242:39 pm
ORH
-
SAN
1 stop23h 39m
American Airlines
Tue 4/2810:30 pm
SAN
-
ORH
1 stop12h 44m
American Airlines
Deal found 2/3$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 February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$232
(Alaska Airlines)

One-way from

$122
(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.
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 ($9 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 February 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 February 4, 2026.
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 2/25

7:00 am-10:32 am

Nonstop6h 32m

San Diego

Tue 3/3

8:44 pm-5:00 am

Nonstop5h 16m

$237

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Mon 2/23

5:05 pm-8:45 pm

Nonstop6h 40m

San Diego

Tue 3/3

9:55 pm-6:25 am

Nonstop5h 30m

$247

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 2/24

11:00 am-2:38 pm

Nonstop6h 38m

San Diego

Mon 3/2

3:35 pm-11:48 pm

Nonstop5h 13m

$247

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Mon 3/23

5:30 pm-9:07 pm

Nonstop6h 37m

San Diego

Wed 3/25

10:03 pm-6:25 am

Nonstop5h 22m

$247

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 3/12

5:30 pm-9:07 pm

Nonstop6h 37m

San Diego

Tue 3/17

10:03 pm-6:25 am

Nonstop5h 22m

$247

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 2/24

9:30 am-3:41 pm

1 stop9h 11m

San Diego

Tue 3/17

10:30 am-9:54 pm

1 stop8h 24m

$257

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 3/4

7:00 am-4:46 pm

1 stop12h 46m

San Diego

Tue 3/10

3:45 pm-6:54 am

1 stop12h 09m

$257

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 2/24

2:20 pm-8:46 pm

1 stop9h 26m

San Diego

Tue 3/3

12:16 pm-11:30 pm

1 stop8h 14m

$257

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 3/14

5:30 pm-9:07 pm

Nonstop6h 37m

San Diego

Thu 3/19

10:03 pm-6:25 am

Nonstop5h 22m

$257

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Fri 3/6

5:05 pm-8:45 pm

Nonstop6h 40m

San Diego

Mon 3/9

10:03 pm-6:25 am

Nonstop5h 22m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

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 $361). 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 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 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 April is currently the most expensive (average of $361). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for New Hampshire to San Diego

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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 February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$261Average$510FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$262Average$411FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$351Average$459FlexibilityNo cancel feeOn-time63%

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