$609 Cheap Flights from Grand Rapids (GRR) to Castries (SLU)

View $609 flight on Sun, Jan 11, 2026Opens in a new window

Popular airlines from Gerald R. Ford International Airport (GRR) to George F. L. Charles Airport (SLU)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Grand Rapids to Castries (GRR-SLU)

Prices were available within the past 7 days and start at $609 for one-way flights and $1,418 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Jan 28 - Wed, Feb 4
GRR
Grand Rapids
SLU
Castries
$1,418 Roundtrip, found 2 days ago
$1,418
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jan 28 from Grand Rapids to Castries, returning Wed, Feb 4, priced at $1,418 found 2 days ago

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 $751
UVF
Hewanorra Intl.
Cheapest
Average driving time to city center53 min
Flights from $751
Flights from Grand Rapids (GRR) to Castries (SLU)
Origin airport
Gerald R. Ford Intl.
Destination airport
George F. L. Charles
Roundtrip price
$1,418
Distance
2469 mi

Grand Rapids to Castries Flights

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

 

The best time to book a flight from Grand Rapids to Castries

Sunday is one of the best days to book for cheap flights from Grand Rapids 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 Grand Rapids 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 Grand Rapids to Castries in 2025. You can also book with separate airlines for your outbound and return journeys, from $609 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 Grand Rapids 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 Grand Rapids 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 Gerald R. Ford Intl. Airport (GRR) to George F. L. Charles Airport (SLU) cost?
Lock in a cheap one-way flight from $609 or cheap return flight from $1,418 from Gerald R. Ford Intl. Airport (GRR) 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 Gerald R. Ford Intl. Airport (GRR) to George F. L. Charles Airport (SLU)?
January is the least expensive month to fly from GRR to SLU. Avoiding peak travel times is often the key to landing a great deal.
What is the cheapest airline that flies from Gerald R. Ford Intl. Airport (GRR) to George F. L. Charles Airport (SLU)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll take you from GRR to SLU. Then, sort your results by "Price (lowest to highest)" to pick up the best deal available.
How many flights per day from Gerald R. Ford Intl. Airport (GRR) to George F. L. Charles Airport (SLU)?
Nonstop flights from Gerald R. Ford Intl. Airport (GRR) 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 our filter tool. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from GRR to SLU?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary based on a number of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Gerald R. Ford Intl. Airport (GRR) to George F. L. Charles Airport (SLU)?
To arrive at George F. L. Charles Airport (SLU) without delays, choose a flight that leaves Gerald R. Ford Intl. Airport (GRR) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Gerald R. Ford Intl. Airport (GRR) to George F. L. Charles Airport (SLU) last-minute?
Booking your plane ticket from GRR to SLU just before your getaway is typically more expensive. However, if you're flexible with your schedule, you could snag a cheap last-minute fare.
Is it cheaper to book a GRR to SLU flight and hotel package?
Compared with arranging hotels and flights separately, booking a GRR to SLU flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one easy place will take the hassle out of planning your trip. Simply secure your flights and select from our wide range of hotels, then customize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Gerald R. Ford Intl. Airport (GRR) to George F. L. Charles Airport (SLU)?
Generally, it's possible to reschedule or cancel your GRR to SLU flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.