$1,031 Cheap Flights from Dayton (DAY) to Castries (SLU)

View $1,031 flight on Thu, Dec 18, 2025Opens in a new window

Popular airlines from Dayton Intl. Airport (DAY) to George F. L. Charles Airport (SLU)

Cheap Flights from Dayton to Castries (DAY-SLU)

Prices were available within the past 7 days and start at $1,031 for one-way flights and $1,683 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Dec 18 - Thu, Dec 25
DAY
Dayton
SLU
Castries
$1,683 Roundtrip, found 3 days ago
$1,683
Roundtrip
found 3 days ago
Select United flight, departing Thu, Dec 18 from Dayton to Castries, returning Thu, Dec 25, priced at $1,683 found 3 days ago
Flights from Dayton (DAY) to Castries (SLU)
Origin airport
James M. Cox Dayton Intl.
Destination airport
George F. L. Charles
Roundtrip price
$1,682
Distance
2274 mi

Dayton to Castries Flights

The cheapest times to fly from Dayton 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 Dayton to Castries are during the month of December. You can find some of the cheapest flights from Dayton to Castries with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Dayton to Castries

Sunday is one of the best days to book for cheap flights from Dayton 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 Dayton 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 Dayton to Castries in 2025. You can also book with separate airlines for your outbound and return journeys, from $1,031 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 Dayton 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 Dayton 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.

 

Frequently asked questions

How much does a flight from James M. Cox Dayton Intl. Airport (DAY) to George F. L. Charles Airport (SLU) cost?
Snag a cheap one-way flight from $1,031 or cheap return flight from $1,683 from James M. Cox Dayton Intl. Airport (DAY) 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 offers on this route.
What is the cheapest month to fly from James M. Cox Dayton Intl. Airport (DAY) to George F. L. Charles Airport (SLU)?
December is the cheapest month to fly from DAY to SLU. Planning your trip for the off-season is often the key to finding a great deal.
What is the cheapest airline that flies from James M. Cox Dayton Intl. Airport (DAY) to George F. L. Charles Airport (SLU)?
To find the cheapest airline flying from DAY to SLU, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from James M. Cox Dayton Intl. Airport (DAY) to George F. L. Charles Airport (SLU)?
Direct flights from James M. Cox Dayton Intl. Airport (DAY) to George F. L. Charles Airport (SLU) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from DAY to SLU?
You'll generally 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 James M. Cox Dayton Intl. Airport (DAY) to George F. L. Charles Airport (SLU)?
To avoid possible delays on the James M. Cox Dayton Intl. Airport (DAY) to George F. L. Charles Airport (SLU) route, aim to travel before 3 PM. Later flights have a 22% higher chance of being 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 James M. Cox Dayton Intl. Airport (DAY) to George F. L. Charles Airport (SLU) last-minute?
Last-minute bookings from DAY to SLU are usually more expensive. For the best prices, start looking for flights well in advance. That said, if you can play around with your travel dates, it's possible to score a cheap ticket just before your departure.
Is it cheaper to book a DAY to SLU flight and hotel package?
Booking a DAY to SLU flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our wide range of accommodations and then add car rentals, activities and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from James M. Cox Dayton Intl. Airport (DAY) to George F. L. Charles Airport (SLU)?
If you booked your DAY 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 purchased, 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 for more details.

Explore a world of travel with Expedia

*Available to One Key members.