$143+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — SAN
Jun 17 — Jun 241
1 adult, Economy
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Find cheap flights from New Hampshire to San Diego with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 June 12, 2025.
Round-trip from | $247 (Mytrip) |
|---|---|
One-way from | $143 (Cheapflightsfares) |
Popular in | December |
Cheapest in | January |
Average price | $395 |
Find flight deals from New Hampshire to San Diego
Cheapest flights from New Hampshire to San DiegoExplore 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 June 12, 2025.
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 June 12, 2025.
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/19:58 amBOS - SAN
2 stops16h 31mSpirit Airlines
Fri 7/411:55 amSAN - BOS
1 stop28h 14mSpirit Airlines
Deal found 6/10![Spirit Airlines logo]()
$247
This JetBlue deal was found by Cheapflights users on 6/11. 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.
Mon 7/147:00 amBOS - SAN
Nonstop6h 04mJetBlue
Sat 7/199:35 pmSAN - BOS
Nonstop5h 47mJetBlue
Deal found 6/11![JetBlue logo]()
$252
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 9/238:23 pmBOS - SAN
1 stop14h 18mAlaska Airlines
Sun 9/287:15 amSAN - BOS
1 stop14h 08mAlaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$256
This American Airlines deal was found by Cheapflights users on 6/11. 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 9/38:05 amBOS - SAN
1 stop9h 25mAmerican Airlines
Mon 9/810:42 amSAN - BOS
1 stop8h 12mAmerican Airlines
Deal found 6/11![American Airlines logo]()
$257
This SmartFares deal was found by Cheapflights users on 6/12. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/188:40 amBOS - SAN
Nonstop6h 10mHawaiian Airlines
Sun 7/2010:45 pmSAN - BOS
Nonstop5h 45mHawaiian Airlines
Deal found 6/12![Hawaiian Airlines logo]()
$271
This Mytrip deal was found by Cheapflights users on 6/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2110:39 amBOS - SAN
1 stop8h 31mMultiple Airlines
Sun 7/279:40 pmSAN - BOS
2 stops18h 41mMultiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$273
This Delta deal was found by Cheapflights users on 6/10. 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 10/2211:00 amBOS - SAN
1 stop10h 00mDelta
Sat 10/2510:00 pmSAN - BOS
Nonstop5h 39mDelta
Deal found 6/10![Delta logo]()
$280
This American Airlines deal was found by Cheapflights users on 6/11. 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 10/47:05 amMHT - SAN
1 stop9h 58mAmerican Airlines
Wed 10/86:20 amSAN - MHT
1 stop10h 49mAmerican Airlines
Deal found 6/11![American Airlines logo]()
$287
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Wed 8/135:35 amPWM - SAN
1 stop8h 20mUnited Airlines
Wed 8/2010:30 pmSAN - PWM
1 stop7h 54mUnited Airlines
Deal found 6/11![United Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 6/11. 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 10/233:25 pmORH - SAN
2 stops11h 00mAmerican Airlines
Mon 10/2711:00 pmSAN - ORH
1 stop12h 53mAmerican Airlines
Deal found 6/11![American Airlines logo]()
$302
This American Airlines deal was found by Cheapflights users on 6/12. 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 8/138:00 amPWM - SAN
2 stops10h 25mAmerican Airlines
Mon 8/186:15 amSAN - PWM
1 stop8h 31mAmerican Airlines
Deal found 6/12![American Airlines logo]()
$302
This Delta deal was found by Cheapflights users on 6/11. 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.
Sat 8/166:00 amPWM - SAN
1 stop9h 28mDelta
Wed 8/2012:09 pmSAN - PWM
1 stop8h 54mDelta
Deal found 6/11![Delta logo]()
$306
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 June 12, 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
Tue 7/1
9:58 am-11:29 pm
2 stops16h 31m
San Diego
Fri 7/4
11:55 am-7:09 pm
1 stop28h 14m
$247
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Mon 7/14
7:00 am-10:04 am
Nonstop6h 04m
San Diego
Sat 7/19
9:35 pm-6:22 am
Nonstop5h 47m
$252
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Tue 9/23
8:23 pm-7:41 am
1 stop14h 18m
San Diego
Sun 9/28
7:15 am-12:23 am
1 stop14h 08m
$256
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Wed 9/3
12:33 pm-7:27 pm
1 stop9h 54m
San Diego
Thu 9/11
11:46 am-10:50 pm
1 stop8h 04m
$257
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Fri 7/18
8:40 am-11:50 am
Nonstop6h 10m
San Diego
Sun 7/20
10:45 pm-7:30 am
Nonstop5h 45m
$271
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Mon 7/21
10:39 am-4:10 pm
1 stop8h 31m
San Diego
Sun 7/27
9:40 pm-7:21 pm
2 stops18h 41m
$273
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Wed 10/22
11:00 am-6:00 pm
1 stop10h 00m
San Diego
Sat 10/25
10:00 pm-6:39 am
Nonstop5h 39m
$280
ManchesterSan Diego
MHT - SAN
MHTSAN
Manchester
Sat 8/16
5:40 am-10:39 am
1 stop7h 59m
San Diego
Sat 8/23
10:54 pm-9:40 am
1 stop7h 46m
$287
PortlandSan Diego
PWM - SAN
PWMSAN
Portland
Wed 8/13
5:35 am-10:55 am
1 stop8h 20m
San Diego
Wed 8/20
10:30 pm-9:24 am
1 stop7h 54m
$297
WorcesterSan Diego
ORH - SAN
ORHSAN
Worcester
Thu 10/23
3:25 pm-11:25 pm
2 stops11h 00m
San Diego
Mon 10/27
11:00 pm-2:53 pm
1 stop12h 53m
$302
Showing 1-10 of 53 results
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 June 12, 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.
Rainfall in San Diego by month
Plan your trip to San Diego by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.
Temperature in San Diego by month
Plan your trip to San Diego by taking into account the average temperature totals by month.
If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).
Reviews of airlines servicing San Diego
Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated June 12, 2025.
Peruse reviews from past customers who have flown with Breeze Airways, Alaska Airlines and Southwest from New Hampshire to San Diego to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
6.6
Crew
8.8
Overall
8.1
Comfort
8.2
Boarding
8.3
Food
6.7
Reviews
1 / 11
10.0
ExcellentDena,Dec 2024
LAS - BDL
Entertainment
6.6
Crew
8.8
Overall
8.1
Comfort
8.2
Boarding
8.3
Food
6.7
Reviews
1 / 11
10.0
ExcellentDena,Dec 2024
LAS - BDL
Entertainment
6.6
Crew
8.8
Overall
8.1
Comfort
8.2
Boarding
8.3
Food
6.7
Reviews
1 / 11
10.0
ExcellentDena,Dec 2024
LAS - BDL
Entertainment
6.6
Crew
8.8
Overall
8.1
Comfort
8.2
Boarding
8.3
Food
6.7
Reviews
1 / 11
10.0
ExcellentDena,Dec 2024
LAS - BDL
Entertainment
6.6
Crew
8.8
Overall
8.1
Comfort
8.2
Boarding
8.3
Food
6.7
Reviews
1 / 11
10.0
ExcellentDena,Dec 2024
LAS - BDL
Entertainment
6.6
Crew
8.8
Overall
8.1
Comfort
8.2
Boarding
8.3
Food
6.7
Reviews
1 / 11
10.0
ExcellentDena,Dec 2024
LAS - BDL
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.
Traveling to a place near New Hampshire?
Book flights to New Hampshire if you plan to visit one of these locationsEl Cajon
Chula Vista
National City
Imperial Beach
La Mesa
Alpine
Lemon Grove
Poway
Santee
Coronado
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.
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 June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$326 | Average$455 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$327 | Average$532 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$351 | Average$497 | FlexibilityNo cancel fee | On-time63% |