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CA $1,302 Cheap Flights from Buffalo (BUF) to Castries (SLU)

View CA $1,302 flight on Sun, Aug 16, 2026Opens in a new window

Popular airlines from Buffalo Niagara Intl. Airport (BUF) to George F. L. Charles Airport (SLU)

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Cheap flights from Buffalo (BUF) to Castries (SLU)

Prices were available within the past 7 days and start at CA $1,302 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alternative airports near Castries

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Hewanorra Intl. UVF. Cheapest option available. Average driving time to city centre is 53 minutes. Flights from CA $958
UVF
Hewanorra Intl.
Cheapest
Average driving time to city centre53 min
Flights from CA $958

Frequently asked questions

How much does a flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles) cost?
You can find one-way and return flights from BUF to SLU with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when BUF to SLU ticket fares go up or down.
What is the cheapest month to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles)?
The cheapest months to fly from BUF to SLU are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles)?
Enter BUF to SLU and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles)?
JetBlue Airways is one of the cheapest airlines offering connecting return flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles), with tickets starting from around CA$657 for flights that can be booked for departure within the next year. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles)?
To find a cheap flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles)?
There are approximately 3 connecting flights per day from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles). Some common connection points include Washington Dulles Intl. (IAD), Liberty Intl. (EWR), and John F. Kennedy Intl. (JFK).
What is the earliest flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles)?
The earliest flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles) typically departs around 5:05 AM. This flight is operated by American Airlines. This is a seasonal service, active only in December. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles)?
You'll typically find the most flights from Buffalo Niagara Intl. (BUF) to George F. L. Charles (SLU) on a Friday, with around 25 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include American Airlines, Delta, and United. Fridays offer notably more flight options compared to other days of the week, so you might find it easier to secure a flight that fits your schedule.
What are the most popular departure times for flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles)?
The most popular departure times for flights from Buffalo Niagara Intl. (BUF) to George F. L. Charles (SLU) are in the early morning, from 6am to 9am. Many major carriers, including JetBlue Airways, American Airlines and Delta, offer flights during this window. Many travellers prefer these times because it allows for an early start to their journey, often leading to an earlier arrival at their destination.
How long does it take to fly from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles)?
There are no nonstop flights from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles). Flights with two or more stops typically take around 12 hours 30 minutes to cover the approximately 3,635-kilometre distance. Keep in mind that actual travel times can vary based on your specific routing, layover durations, and factors like wind patterns.
Can you fly business or first class from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles)?
Yes, you can fly business class from Buffalo, NY (BUF) to Castries (SLU). You can fly business class with United.
How do I earn miles on a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles) flight with Expedia?
It's easy to earn miles on a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Castries (SLU) from Buffalo, NY (BUF)?
If you're planning to travel to Castries from Buffalo Niagara Intl. (BUF), you can fly directly into George F. L. Charles (SLU). Some flights may connect through major hubs like Ronald Reagan Washington National (DCA), Philadelphia Intl. (PHL), or Charlotte-Douglas Intl. (CLT) before reaching Castries. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles) at the last minute?
Typically, booking a last minute flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles) flight and hotel package?
Securing a Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles)?
If you booked your Buffalo, NY (BUF-Buffalo Niagara Intl.) to Castries (SLU-George F. L. Charles) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Buffalo Niagara Intl.
Destination airport
George F. L. Charles
Distance
3613 km

Book with confidence

Buffalo to Castries Flights

The easy way to book your flights from Buffalo to Castries 

With Expedia, it’s simple to find and book flights to Castries from Buffalo whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 1 airlines that cover this route. There are nonstop flights to George F. L. Charles, too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Buffalo to Castries today, tomorrow, or this week.  

 

Save dollars with cheap flights from Buffalo Niagara Intl., BUF to George F. L. Charles, SLU 

Sort your search results by price to find great deals on your flight from Buffalo to Castries—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Castries from Buffalo currently is just rising to .  

Here are more money-saving tips: 

  • Fly in when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Castries  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Castries from Buffalo 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Castries with Expedia today.

Buffalo to Castries Flights

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