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Cheap Flights from Portsmouth (PSM) to San Diego (SAN)

Compare Portsmouth to San Diego flight deals

Find the cheapest month or even day of the year to fly to San Diego

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Flight deals from Portsmouth to San Diego

Looking for a cheap last-minute deal or the best round-trip flight from Portsmouth to San Diego? Find the lowest prices on one-way and round-trip tickets right here.

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Find the cheapest month to fly from Portsmouth to San Diego

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Portsmouth to San Diego flights are currently cheapest in August.
May
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Jun
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Jul
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Aug
from $901
Sep
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Oct
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Nov
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Dec
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Jan
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Feb
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Mar
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Apr
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Alternative Portsmouth to San Diego routes

Looking for the cheapest, fastest or easiest route from Portsmouth to San Diego? You could fly into the following airports instead.

Portsmouth to San Diego: Flight information

The things to know before you go.
Cheapest flight found$901
Cheapest month to flyAugust
Average flights per week0

Finding cheap flights from Portsmouth to San Diego: Frequently asked questions

There are 3 airports in San Diego: San Diego International, El Cajon and McClellan – Palomar.
The best price we found for a round-trip flight from Portsmouth to San Diego is $901. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Portsmouth to San Diego. But we found flights with one or more stops from $901.
There are no flights flying from Portsmouth to San Diego, as of May 2024.
The cheapest month to fly from Portsmouth to San Diego is usually August.
If you're flying from Portsmouth Airport, the cheapest airport near San Diego is San Diego International – which is 2.5 miles away from the center of San Diego. We've found flights to this airport from $901.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Portsmouth Airport to San Diego on Wednesday, August 7, 2024.
No airlines currently offer direct flights between Portsmouth Airport and San Diego. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 63°F. August is typically the warmest month in San Diego, when it usually averages around 83°F. You can expect the least rain in June. The coldest month is December, with temperatures averaging 49°F. The rainiest month is February.
Currently, Allegiant Air offers the cheapest flight tickets to San Diego.

How to find cheap flights to San Diego from Portsmouth

Looking for cheap tickets from Portsmouth to San Diego? Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

  • Simply hit "search." From Delta Air Lines to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from Portsmouth to San Diego. And with us, there are no hidden fees – what you see is what you pay.
  • Compare flight deals to San Diego from Portsmouth from over 1,000 providers. Then choose the cheapest plane tickets or fastest journeys.
  • Flex your dates to find the best Portsmouth–San Diego ticket prices. If you're flexible when it comes to your travel dates, use Skyscanner's "Whole month" tool to find the cheapest month, and even day to fly to San Diego from Portsmouth.
  • Set up a Price Alert. You can easily track the fare of your cheap Portsmouth–San Diego flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
  • Fly without stops. Only interested in direct flights between Portsmouth and San Diego? Make sure to tick "Direct flights only" when performing a search. If there are direct flights available on the route, these will appear in the results.
  • Find the cheapest Business Class flights from Portsmouth and San Diego. We scour the Internet for the best Business, Premium Economy and First Class flight fares to San Diego, too. Check the difference in price as you search – you might just stumble on a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
  • Include nearby airports in your search. Widen your search for Portsmouth to San Diego flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save the next time you travel.

    • Combine your flight to San Diego from Portsmouth with hotels and car rental

    Once you've secured your cheap flight ticket from Portsmouth to San Diego, discover the best prices and exclusive rates for hotels in San Diego or nearby. You can also compare hundreds of car rental companies at once so you get the best car rental price for your trip.


Plan the rest of your trip from Portsmouth to San Diego

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.