Skyscanner home

467 € 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

Book the best Castries fare with no extra fees

Flight deals from San Francisco International 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 708 €. Find the lowest prices on one-way and return tickets right here.
Castries.467 € per passenger.Departing Tue, 1 Sep, returning Thu, 10 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from San Francisco International on Tue, 1 Sep, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Thu, 10 Sep, arriving in San Francisco International.Price includes taxes and charges.From 467 €, select.
Castries.467 € per passenger.Departing Fri, 28 Aug, returning Tue, 1 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from San Francisco International on Fri, 28 Aug, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Tue, 1 Sep, arriving in San Francisco International.Price includes taxes and charges.From 467 €, select.
Castries.565 € per passenger.Departing Thu, 13 Aug, returning Sat, 22 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from San Francisco International on Thu, 13 Aug, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Sat, 22 Aug, arriving in San Francisco International.Price includes taxes and charges.From 565 €, select.
Castries.617 € per passenger.Departing Sat, 9 Jan, returning Sun, 17 Jan.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from San Francisco International on Sat, 9 Jan, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Sun, 17 Jan, arriving in San Francisco International.Price includes taxes and charges.From 617 €, select.
Castries.648 € per passenger.Departing Thu, 3 Dec, returning Thu, 10 Dec.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from San Francisco International on Thu, 3 Dec, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Thu, 10 Dec, arriving in San Francisco International.Price includes taxes and charges.From 648 €, select.
Castries.662 € per passenger.Departing Sat, 27 Feb, returning Sun, 7 Mar.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from San Francisco International on Sat, 27 Feb, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Sun, 7 Mar, arriving in San Francisco International.Price includes taxes and charges.From 662 €, select.
Castries.674 € per passenger.Departing Mon, 16 Nov, returning Thu, 3 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from San Francisco International on Mon, 16 Nov, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Thu, 3 Dec, arriving in San Francisco International.Price includes taxes and charges.From 674 €, select.
Castries.708 € per passenger.Departing Mon, 6 Jul, returning Fri, 10 Jul.Return flight with Delta.Outbound indirect flight with Delta, departs from San Francisco International on Mon, 6 Jul, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Fri, 10 Jul, arriving in San Francisco International.Price includes taxes and charges.From 708 €, select.
Castries.711 € per passenger.Departing Fri, 16 Oct, returning Wed, 21 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from San Francisco International on Fri, 16 Oct, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Wed, 21 Oct, arriving in San Francisco International.Price includes taxes and charges.From 711 €, select.
Castries.860 € per passenger.Departing Thu, 30 Jul, returning Thu, 6 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from San Francisco International on Thu, 30 Jul, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Thu, 6 Aug, arriving in San Francisco International.Price includes taxes and charges.From 860 €, select.
Castries.914 € per passenger.Departing Wed, 24 Jun, returning Tue, 30 Jun.Return flight with Delta.Outbound indirect flight with Delta, departs from San Francisco International on Wed, 24 Jun, arriving in St Lucia Hewanorra.Inbound indirect flight with Delta, departs from St Lucia Hewanorra on Tue, 30 Jun, arriving in San Francisco International.Price includes taxes and charges.From 914 €, select.
Castries.936 € per passenger.Departing Wed, 25 Nov, returning Sun, 29 Nov.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from San Francisco International on Wed, 25 Nov, arriving in St Lucia Hewanorra.Inbound indirect flight with Air Canada, departs from St Lucia Hewanorra on Sun, 29 Nov, arriving in San Francisco International.Price includes taxes and charges.From 936 €, select.
Castries.1.046 € per passenger.Departing Tue, 30 Jun, returning Sat, 11 Jul.Return flight with jetBlue.Outbound indirect flight with jetBlue, departs from San Francisco International on Tue, 30 Jun, arriving in St Lucia Hewanorra.Inbound indirect flight with jetBlue, departs from St Lucia Hewanorra on Sat, 11 Jul, arriving in San Francisco International.Price includes taxes and charges.From 1.046 €, select.
Castries.1.548 € per passenger.Departing Sat, 26 Dec, returning Sat, 2 Jan.Return flight with Alaska Airlines and WestJet.Outbound indirect flight with Alaska Airlines, departs from San Francisco International on Sat, 26 Dec, arriving in St Lucia Vigie.Inbound indirect flight with WestJet, departs from St Lucia Hewanorra on Sat, 2 Jan, arriving in San Francisco International.Price includes taxes and charges.From 1.548 €, select.

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 September.
Jun
from 914 €
Jul
from 708 €
Aug
from 565 €
Sep
from 467 €
Oct
from 711 €
Nov
from 936 €
Dec
from 648 €
Jan
from 617 €
Feb
Find prices
Mar
Find prices
Apr
Find prices
May
Find prices

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.

St Lucia Vigie

1km from central Castries
Closest
from 859 €
Search flights

St Lucia Hewanorra

31km from central Castries
Cheapest
from 467 €
Search flights

San Francisco to Castries: Flight information

The things to know before you go.
Cheapest flight found467 €
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 467 €. 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 467 €.
As of June 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 August.
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 467 €.
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 Friday, 28 August 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 June, the average temperature is usually around 28°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, Delta offers the cheapest flight tickets to Castries.

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

  • The timezone in Castries is UTC-4. The city is four hours ahead of San Francisco, where San Francisco International Airport is located.

  • To avoid missing your SFO to Castries flight, allow plenty of time to navigate the airport and find your gate. Turning up two hours ahead of international departures and one hour before domestic flights is the standard rule.

  • You'll likely experience longer queues during popular months such as July. Arriving up to four hours in advance for an international flight and two hours for domestic departures will give you plenty of time for security and boarding.

  • We make it simple to book plane tickets from SFO to Castries with a stopover. To see all your options, deselect 'Direct flights only.' Then, select a flight offering a stop long enough to explore your chosen city. The most sought-after stopovers include:

    • Chicago O'Hare International Airport (ORD)

    • Atlanta Hartsfield-Jackson International Airport (ATL)

    • Miami International Airport (MIA)

  • SFO is about 18 kilometres from central San Francisco. If you're ride-sharing, driving or catching a taxi from the centre, it'll take you 25 minutes or so to get there, depending on traffic. If you're taking public transport, expect the trip time to be around 35 minutes.

  • Looking for a hotel near SFO? If you're catching an early flight from San Francisco International Airport to Castries, these stays will put you moments from your departure lounge:

  • 78% of flights that depart San Francisco International Airport reach their destination on time.

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

  • 234 € is the cheapest price we've seen for a one-way San Francisco International Airport to Castries flight. A round-trip plane ticket right now is 467 €. Depending on when and how early you book, these fares could change.

  • To find cheap flights from SFO to Castries, book ahead. Airlines generally offer lower fares when flights first go on sale.

  • Landing cheap tickets from San Francisco International Airport to Castries is easier if you can be flexible with your dates. Try using the 'Whole month' tool to get the lowest prices throughout the month and score a fantastic deal.

  • Never miss a deal on cheap flights from SFO to Castries by setting up a Price Alert. We'll send you an email or notification on the app when fares go down.

  • Find an affordable flight from San Francisco International Airport to Castries with the help of our filters. Select your preferred duration, number of stops and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in Castries

St Lucia Hewnorra International Airport (UVF)

  • The distance from St Lucia Hewnorra International Airport (UVF) to central Castries is roughly 72 kilometres. It takes about 1 hour 30 minutes to get to the centre driving.

  • If you're using public transport, expect a journey time of about 2 hours.

  • The last thing you need is a lengthy journey to your hotel if you're arriving on a late flight from San Francisco International Airport to Castries. Reserve one of these accommodation options near UVF instead:

  • Reserving your ride from St Lucia Hewnorra International Airport around one week before your flight from SFO to Castries can help you lock in the lowest rate.

Castries George F. L. Charles Airport (SLU)

  • Once your flight from San Francisco International Airport to Castries has hit the tarmac, you can reach the city centre in about 10 minutes by car. Central Castries is roughly 3 kilometres from Castries George F. L. Charles Airport (SLU).

  • Public transport will get you there in around 15 minutes.

  • After stepping off your SFO to Castries flight, unwind at a hotel close to SLU. These are some comfortable accommodation options that'll help you sink into relaxation mode:

  • Snap up the best price by reserving your ride from SLU one week ahead of time. You can also expect to have a wider range of vehicles.

Best time to go to Castries

  • February is the most popular month for flights from San Francisco International Airport to Castries. To steer clear of the crowds, head to Castries in September.

  • Book a San Francisco International Airport to Castries plane ticket with a departure in September if you're eager to explore the city during its warmest month. You can expect temperatures to range from 26ºC (79ºF) to 30ºC (86ºF).

  • Search for cheap tickets from SFO to Castries in February if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between 24ºC (75ºF) and 28ºC (82ºF) on average.

More about Castries

  • When it comes to searching for somewhere to rest your head, you'll find the best places to stay in Castries right here. Browse these hotels after locking in your flight from San Francisco International Airport to Castries:

  • Malabar Beach and Vigie Beach are just the start of the big attractions to add to your Castries to-do list. Keep the sightseeing going at Morne Fortune.

Plan the rest of your trip from San Francisco to Castries

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.