Cheap Flights from Baltimore (BWI) to Castries (SLU)

Popular airlines from Baltimore Washington Intl. Airport (BWI) to George F. L. Charles Airport (SLU)

Find the cheapest month to fly from Baltimore (BWI) to Castries (SLU)

August is typically the cheapest month to fly

From $427 - $777 per traveler.

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 center is 53 minutes. Flights from $1,126
UVF
Hewanorra Intl.
Cheapest
Average driving time to city center53 min
Flights from $1,126

Frequently asked questions

How much does a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to George F. L. Charles Airport (SLU) cost?
Secure a cheap one-way flight or cheap return flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to George F. L. Charles Airport (SLU) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to George F. L. Charles Airport (SLU)?
The cheapest month to fly from BWI to SLU is , when demand is low. Off-peak months are often when airlines offer better prices between these airports.
What is the cheapest airline that flies from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to George F. L. Charles Airport (SLU)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BWI to SLU. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to George F. L. Charles Airport (SLU)?
You'll have to hop on a flight with a layover if you're traveling from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to George F. L. Charles Airport (SLU). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from BWI to SLU?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to George F. L. Charles Airport (SLU)?
To avoid potential delays on the Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to George F. L. Charles Airport (SLU) route, travel before 3 PM. Departures after this time are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to George F. L. Charles Airport (SLU) last-minute?
Last-minute fares from BWI to SLU are typically more expensive. To secure the best rates, start looking for flights as soon as possible. That being said, if you can play around with your travel dates, it's possible to find a cheap ticket just before your departure.
Is it cheaper to book a BWI to SLU flight and hotel package?
You'll generally save money by securing a BWI to SLU flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After selecting your ideal accommodations and flights, consider other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to George F. L. Charles Airport (SLU)?
If you reserved your BWI to SLU flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you want more information.

Travel information

Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
George F. L. Charles
Distance
1982 mi

Book with confidence

Baltimore to Castries Flights

The cheapest times to fly from Baltimore to Castries

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Baltimore to Castries are during the month of . You can find some of the cheapest flights from Baltimore to Castries with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Baltimore to Castries

Sunday is one of the best days to book for cheap flights from Baltimore to Castries: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Baltimore to Castries

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Baltimore to Castries in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Baltimore to Castries flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Baltimore to Castries airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Baltimore to Castries Flights

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*Available to One Key members.