$592 Cheap Flights from Chicago (ORD) to Castries (SLU)

View $592 flight on Wed, Dec 31, 2025Opens in a new window

Popular airlines from Chicago O'Hare Intl. Airport (ORD) to George F. L. Charles Airport (SLU)

Cheap Flights from Chicago to Castries (ORD-SLU)

Prices were available within the past 7 days and start at $592 for one-way flights and $1,138 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, Dec 14 - Thu, Dec 18
ORD
Chicago
SLU
Castries
$1,138 Roundtrip, found 2 days ago
$1,138
Roundtrip
found 2 days ago
Select United flight, departing Sun, Dec 14 from Chicago to Castries, returning Thu, Dec 18, priced at $1,138 found 2 days ago

Find the cheapest month to fly from Chicago (ORD) to Castries (SLU)

September is typically the cheapest month to fly

From $436 - $764 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 $622
UVF
Hewanorra Intl.
Cheapest
Average driving time to city center53 min
Flights from $622

Frequently asked questions

How much does a flight from O'Hare Intl. Airport (ORD) to George F. L. Charles Airport (SLU) cost?
Lock in a cheap one-way flight from $592 or cheap return flight from $1,138 from O'Hare Intl. Airport (ORD) to George F. L. Charles Airport (SLU) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from O'Hare Intl. Airport (ORD) to George F. L. Charles Airport (SLU)?
The cheapest month to fly from ORD to SLU is December, when there's less demand. Off-peak months are usually when better flight deals are available between these airports.
What is the cheapest airline that flies from O'Hare Intl. Airport (ORD) to George F. L. Charles Airport (SLU)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll fly you from ORD to SLU. Then, sort your results by "Price (lowest to highest)" to snag a great deal.
How many flights per day from O'Hare Intl. Airport (ORD) to George F. L. Charles Airport (SLU)?
There are no daily nonstop flights from O'Hare Intl. Airport (ORD) to George F. L. Charles Airport (SLU). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from ORD to SLU?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can change based on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from O'Hare Intl. Airport (ORD) to George F. L. Charles Airport (SLU)?
To touch down at George F. L. Charles Airport (SLU) without delays, choose a flight that leaves from O'Hare Intl. Airport (ORD) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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.
What airports do you fly into for Castries from O'Hare Intl. Airport (ORD)?
Compare your flight options from O'Hare Intl. Airport (ORD) to Hewanorra Intl. Airport (UVF). This is the only airport in Castries you can fly into if you're taking a direct flight.
Is it cheaper to buy a plane ticket from O'Hare Intl. Airport (ORD) to George F. L. Charles Airport (SLU) last-minute?
Last-minute bookings from ORD to SLU are typically more expensive. To secure the lowest rates, start looking for flights as soon as possible. That being said, if your travel plans are flexible, it's possible to score a cheap ticket right before your trip.
Is it cheaper to book an ORD to SLU flight and hotel package?
Securing an ORD to SLU flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Choose from our extensive range of hotels and then add flights, activities and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from O'Hare Intl. Airport (ORD) to George F. L. Charles Airport (SLU)?
It's usually possible to cancel or reschedule your ORD to SLU flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
O'Hare Intl.
Destination airport
George F. L. Charles
Roundtrip price
$1,137
Distance
2512 mi

Book with confidence

Chicago to Castries Flights

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

 

The best time to book a flight from Chicago to Castries

Sunday is one of the best days to book for cheap flights from Chicago 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 Chicago 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 Chicago to Castries in 2025. You can also book with separate airlines for your outbound and return journeys, from $592 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 Chicago 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 Chicago 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.

 

Chicago to Castries Flights

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*Available to One Key members.