$148 Flights from Phoenix (PHXA) to Castries (SLUA)

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Find the cheapest month to fly from Phoenix to Castries

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

Alternative Phoenix to Castries routes

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

Phoenix to Castries: Flight information

The things to know before you go.
Cheapest flight found$148
Cheapest month to flyFebruary

Finding cheap flights from Phoenix 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 round-trip flight from Phoenix to Castries is $674. 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 Phoenix to Castries. But we found flights with one or more stops from $674.
There are no flights flying from Phoenix to Castries, as of February 2026.
The cheapest month to fly from Phoenix to Castries is usually April.
If you're flying from Phoenix, the cheapest airport near Castries is St Lucia Hewanorra – which is 19.0 miles away from the center of Castries. We've found flights to this airport from $674.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Phoenix to Castries on Sunday, April 5, 2026.
No airlines currently offer direct flights between Phoenix 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 February, the average temperature is usually around 78°F. September is typically the warmest month in Castries, when it usually averages around 83°F. You can expect the least rain in February. The coldest month is February, with temperatures averaging 77°F. The rainiest month is October.
The cheapest airline that flies to Castries is jetBlue.

Traveling from Phoenix to Castries: what you need to know

  • Planning your trip starts with figuring out where you'll leave from in Phoenix. Phoenix Sky Harbor International Airport (PHX) is the city's main airport, so check out your options for reserving a flight from Phoenix to Castries taking off from here.

  • When it comes to choosing where to land in Castries, George F. L. Charles Airport (SLU) and Hewanorra Airport (UVF) are the primary gateways.

  • For a relaxed travel experience, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This ensures you have enough time to board your Phoenix to Castries flight.

  • If you're traveling during a major holiday or other peak period, allow extra time. A good general rule is two hours before domestic flights and up to four hours before international departures. Lines at security and check-in will be longer.

How to find the cheapest flights from Phoenix to Castries

  • Don't wait until the last moment. You're more likely to find cheap Phoenix to Castries flights if you book in advance. Airlines often have some amazing early bird discounts.

  • The 'Whole month' search tool shows you the cheapest plane tickets from Phoenix to Castries across every month. It's an easy way to snap up a bargain if your dates are flexible.

  • Spend less time searching for cheap flights from Phoenix to Castries by setting up a Price Alert. You'll get an email or notification through the app when a lower fare becomes available.

  • Lock in a cheap Phoenix to Castries flight with the help of our filters. Select your ideal times, number of stops and airlines, then sort the results by 'Cheapest' to see the best deals.

Flying from Phoenix

Phoenix Sky Harbor International Airport (PHX)

  • Consider adding a stopover to potentially save money on your Phoenix to Castries flight. Simply deselect 'Direct flights only' when searching for departures from Phoenix Sky Harbor International Airport. Break up your trip (and maybe save some cash) by stopping at one of these popular options:

    • Newark Liberty International Airport (EWR)

    • Miami International Airport (MIA)

    • Philadelphia International Airport (PHL)

  • The journey from central Phoenix to PHX takes about 35 minutes on public transport. If you ride-share, drive or grab a cab, you'll cover the 4 miles in 10 minutes or so, depending on traffic conditions.

  • Looking for a convenient hotel near Phoenix Sky Harbor International Airport? If you're boarding an early flight from Phoenix to Castries, these stays will have you sleeping moments from your departure lounge:

  • 82.57% of flights departing from Phoenix Sky Harbor International Airport touch down at their destination on schedule. With its strong on-time stats, disruptions are unlikely when jetting out of PHX.

  • The address for PHX is 3400 Sky Harbor Boulevard.

Arriving in Castries

George F. L. Charles Airport (SLU)

  • George F. L. Charles Airport (SLU) to central Castries takes around 5 minutes to reach by car. The center is roughly 1 mile away.

  • Getting to the center on public transport takes about 40 minutes.

  • The last thing you want is a lengthy journey to your hotel if you're landing late on a flight from Phoenix to Castries. Book one of these accommodation options near SLU instead:

  • Hit the road running by picking up a George F. L. Charles Airport rental car. Grab your wheels from Drive A Matic, Final Rentals or Sixt and explore beyond Castries's usual tourist stops.

  • Booking your vehicle from George F. L. Charles Airport about one week in advance gives you the best chance of locking in a great deal.

Hewanorra Airport (UVF)

  • Hewanorra Airport (UVF) is around 19 miles from central Castries. Once you've disembarked your flight from Phoenix to Castries, it'll take you approximately 1 hour 10 minutes to get to the heart of the city in a cab or ride-share.

  • You'll find some comfortable places to lay your head close to UVF. Unwind after your Phoenix to Castries flight at one of these well-located options:

  • Drive A Matic, Sixt and Final Rentals make picking up a Hewanorra Airport rental car quick and easy. These companies are located around or in the terminal and will have you ready to go in a flash.

  • Don't pay more than you need to. Reserving your ride one week before your arrival at UVF can help you lock in a better rate.

Best time to go to Castries

  • It's time to work out your trip dates for your flight from Phoenix to Castries. June is the busiest month to visit Castries. If you like a more relaxed atmosphere, go in February.

  • Book a Phoenix to Castries ticket departing in September if you want to visit the city during its warmest month. You can expect temperatures in Castries to range from 79ºF to 86ºF.

  • February sees average temperatures of between 75ºF and 82ºF. Search for cheap flights from Phoenix to Castries around that time if you want to travel when it's cooler.

More about Castries

  • When it comes to searching for somewhere to rest your head, you'll find the best stays in Castries right here. Explore these options after you've booked your flight from Phoenix to Castries:

  • Every great vacation has to include some sightseeing. Derek Walcott Square, Morne Fortune and Immaculate Conception Church are must-visits when exploring Castries.

Explore more of Saint Lucia

  • Vieux Fort is just one of the many cities in Saint Lucia waiting to be discovered once you've seen Castries. Around 20 miles to the south, check out popular attractions including Maria Islands Museum, Anse Des Sables Beach and YoungFaith Park.

  • Next? Travel to Micoud. It's roughly 15 miles south-east of Castries and boasts highlights including Josephine Splash Park and Ti Rocher Community Park.

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