Cheap flights from Castries to San Diego

Compare Castries to San Diego flight deals

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

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Find the cheapest month to fly from Castries to San Diego

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Castries to San Diego flights are currently cheapest in February.

Alternative Castries to San Diego routes

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

Castries to San Diego: Flight information

The things to know before you go.
Cheapest flight found$342
Cheapest month to flyFebruary

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

There are 2 airports in San Diego: San Diego International and McClellan-Palomar.
The best price we found for a return flight from Castries to San Diego is $852. 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 Castries to San Diego. But we found flights with one or more stops from $852.
As of February 2026, there are no flights flying from Castries to San Diego.
The cheapest month to fly from Castries to San Diego is usually March.
If you're flying from Castries, the cheapest airport near San Diego is San Diego International – which is 4.1 km away from the centre of San Diego. We've found flights into this airport from $852.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Castries to San Diego on Wednesday, 18 March 2026.
No airlines currently offer direct flights between Castries 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 February, the average temperature is usually around 13°C. August is typically the warmest month in San Diego, when it usually averages around 28°C. You can expect the least rain in June. The coldest month is December, with temperatures averaging 10°C. The rainiest month is February.
The cheapest airline that flies to San Diego is Delta .

How to find cheap flights from Castries to San Diego

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

  • Simply hit 'search'. From Singapore Airlines to Emirates, we've compared plane tickets from all major online travel agents and airlines flying Castries-San Diego to find the cheapest flights. And with us, there are no hidden fees – what you see is what you pay.
  • Flex your dates to secure the best air ticket price for your Castries-San Diego flight. If your travel dates are flexible, use Skyscanner's "Whole month" tool to find the cheapest time to fly toSan Diego from Castries.
  • Stay One Step Ahead with Price Alerts. Never miss a deal! Set up a Price Alert for Castries to San Diego by creating an alert. Whenever prices go down or up, you'll get a push notification or email to help you get the best flight deal.
  • Look for direct flights. Only interested in direct flights between Castries and San Diego? Make sure to tick "Direct flights only" when performing a search. If there are direct flights available, these will appear in the results.
  • Include nearby airports in your search. Widen your search for Castries 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 on your next trip.
  • Find the cheapest Business Class flights from Castries to San Diego. We scour the Internet for the best Business, Premium Economy, and First Class flight fares for Castries-San Diego, too. Check the difference in price as you search – you might just stumble on a last-minute low fare.
  • Search for cheap flights when out and about. To get the best flight booking experience on the go, download our app and search for flight tickets from Castries to San Diego wherever you are.

Book air tickets from Castries to San Diego with peace of mind

  • Find flexible flights for Castries to San Diego Your airline might be offering flexible plane tickets to San Diego, which means you won't lose out if your flight has to be changed or cancelled.
  • Add travel cost protection. Avoid travel pitfalls and choose travel cost protection - it's available at the checkout as you book your Castries-San Diego flight with us.
  • Reduce your carbon footprint by selecting a greener Castries-San Diego flight option. To check whether there are any lower emissions flights available on your route, simply check the “only show flights with lower CO₂ emissions” box which will be available once you have moved on from this page.

Combine your flight to San Diego with hotels and car rental

Once you've secured your cheap flight ticket for Castries-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..

Not Sure About San Diego? Explore “Everywhere”

If you're still exploring destinations, use Skyscanner’s “Everywhere” search feature to see the cheapest places to fly from your location. You might just find an irresistible deal to San Diego or another dream destination.


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