Cheap Flights from San Francisco International to Castries

Compare San Francisco International to Castries flight deals

Find the cheapest month or even day of the year to fly to Castries

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Flight deals from San Francisco International Airport to Castries

Looking for a cheap last-minute deal or the best return flight from San Francisco International Airport to Castries? If you want to travel next month, return fares start from Rs217,889. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from San Francisco International to Castries

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

Alternative San Francisco International to Castries routes

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

San Francisco to Castries: Flight information

The things to know before you go.
Cheapest flight foundRs52,109
Cheapest month to flyAugust

Finding cheap flights from San Francisco International to Castries: Frequently asked questions

There are 2 airports in Castries: St Lucia Vigie and St Lucia Hewanorra.
The best price we found for a return flight from San Francisco International to Castries is Rs217,889. 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 San Francisco International to Castries. But we found flights with one or more stops from Rs217,889.
As of March 2026, there are no flights flying from San Francisco International to Castries.
The cheapest month to fly from San Francisco International to Castries is usually April.
If you're flying from San Francisco International Airport, the cheapest airport near Castries is St Lucia Hewanorra – which is 30.5 km away from the centre of Castries. We've found flights into this airport from Rs217,889.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Francisco International Airport to Castries on Monday, 20 April 2026.
No airlines currently offer direct flights between San Francisco International Airport and Castries. 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 Castries 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 Castries is around 40 days in advance, so don’t leave your flight to the last minute.
In March, the average temperature is usually around 26°C. September is typically the warmest month in Castries, when it usually averages around 28°C. You can expect the least rain in February. The coldest month is February, with temperatures averaging 25°C. The rainiest month is October.
Currently, Frontier Airlines offers the cheapest flight tickets to Castries.

Flying from San Francisco International Airport (SFO) to Castries: what you need to know

  • San Francisco International Airport is located in San Francisco. Based in the UTC-4 timezone, Castries is three hours ahead of San Francisco.

  • To avoid rushing for your SFO to Castries flight, allow plenty of time to check in and drop off your luggage. Turning up two hours ahead of international departures and one hour before domestic flights is the general travel rule.

  • If you're jetting off during a major holiday or another peak period, give yourself more time. A good rule is two hours before domestic flights and up to four hours before international departures. Queues at check-in and security will be longer.

  • We make it easy to book flight tickets from SFO to Castries with a stopover. To see all your options, uncheck 'Direct flights only.' Then, pick a flight with a stop long enough to explore your chosen city. Well-traveled stopover hubs include:

    • O'Hare International Airport (ORD)

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • Miami International Airport (MIA)

  • Travelling from central San Francisco to SFO takes around 45 minutes by public transport. If you ride-share, drive or get a cab, you'll cover the 18 kilometres in 20 minutes or so, depending on traffic conditions.

  • Want an easy start to your travels? Stay near SFO. Whether you're boarding an early flight from San Francisco International Airport to Castries or just don't like being rushed, these hotels are just the thing:

  • 77.36% of flights that depart San Francisco International Airport touch down at their destination on time.

How to find the cheapest flights from San Francisco International Airport (SFO) to Castries

  • The best price we've seen for a one-way San Francisco International Airport to Castries flight is Rs52,109. The cheapest price for a return flight is Rs217,889. Remember fares can change due to demand at the time of booking.

  • Booking in advance is often the key to locking in a cheap flight from SFO to Castries. Prices tend to rise as demand increases, so the closer your departure date, the more you'll likely spend.

  • The 'Whole month' tool will show you the cheapest tickets from San Francisco International Airport to Castries across the entire month. It's an easy way to snap up a bargain if your dates aren't set in stone.

  • You don't need to check back constantly to find out if fares have dropped when you set up a Price Alert. We'll let you know the moment there's an even bigger deal on cheap flights from SFO to Castries.

  • Tailor your trip with filters. Choose your arrival and departure times, total journey duration and airlines. You can also sort the results by 'Cheapest,' 'Fastest' or 'Best' flights from San Francisco International Airport to Castries.

Airports in Castries

George F. L. Charles Airport (SLU)

  • George F. L. Charles Airport (SLU) is around 3 kilometres from the centre of Castries. If you're getting a cab or a ride-share, the drive will take roughly 5 minutes.

  • If you're using public transport, expect a journey time of about 40 minutes.

  • Book a hotel close to SLU if you're coming in on a late flight from San Francisco International Airport to Castries. Pick one of these options and avoid the hassle of a long transfer:

  • Grab a George F. L. Charles Airport rental car and discover Castries and beyond with your own wheels. Drive A Matic, Final Rentals and Sixt are well-known companies you can book with here.

  • For the lowest price, reserve your vehicle from George F. L. Charles Airport around one week ahead of your flight from SFO to Castries.

Hewanorra Airport (UVF)

  • After your flight from San Francisco International Airport to Castries has arrived, you can make your way to the city centre in around 1 hour 10 minutes by car. Central Castries is roughly 56 kilometres from Hewanorra Airport (UVF).

  • Following your SFO to Castries flight, settle in at a hotel close to UVF. These are some comfortable options that'll help you slip into relaxation mode:

  • Forget about public transport timetables or cab lines. Grab a Hewanorra Airport rental car and take your journey in whatever direction you like. Check out the rates and availability from Drive A Matic, Sixt and Final Rentals.

  • Avoid paying extra. Booking your ride one week ahead of your arrival at UVF will help you stay within budget.

Best time to go to Castries

  • Travel to Castries in high season if you like a busy atmosphere, but remember that prices are typically higher. Alternatively, book your flights from San Francisco International Airport to Castries during low season when prices are cheaper and it's less crowded.

  • The warmest month in Castries is September, with temperatures ranging between 26ºC and 30ºC. Lock in your San Francisco International Airport to Castries flight ticket then if that's your idea of comfortable weather.

  • Look for cheap tickets from SFO to Castries in February if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 24ºC and 28ºC on average.

More about Castries

  • Start your Castries trip off on the right foot by choosing the perfect place to stay. Once you've booked your flight from San Francisco International Airport to Castries, explore our range of hotels including:

  • There are so many things to do and see in this city it can be hard to know where to start. Morne Fortune, Derek Walcott Square and Immaculate Conception Church are major attractions which should feature on every Castries itinerary.

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