$360 Cheap Flights from Denver (DEN) to Castries (SLU)

View $360 flight on Sat, Aug 29, 2026Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to George F. L. Charles Airport (SLU)

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Cheap Flights from Denver to Castries (DEN-SLU)

Prices were available within the past 7 days and start at $360 for one-way flights and $846 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Sat, Sep 26 - Sat, Oct 10
DEN
Denver
SLU
Castries
$846 Roundtrip, found 4 days ago
$846
Roundtrip
found 4 days ago
Select Air Canada flight, departing Sat, Sep 26 from Denver to Castries, returning Sat, Oct 10, priced at $846 found 4 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 $574
UVF
Hewanorra Intl.
Cheapest
Average driving time to city center53 min
Flights from $574

Find the cheapest month to fly from Denver (DEN) to Castries (SLU)

December is typically the cheapest month to fly

From $411 - $1,543 per traveler.

Frequently asked questions

How much does a flight from Denver, CO (DEN-Denver Intl.) to Castries (SLU-George F. L. Charles) cost?
You can find cheap one-way flights from $360 and cheap return flights from $846 Denver, CO (DEN-Denver Intl.) to Castries (SLU-George F. L. Charles) with Expedia. One-way flights usually range from $196 to $1262, and return flights typically cost between $625 and $2946. 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 the cheapest fares first, and use the Price Tracking tool to receive alerts when Denver, CO (DEN-Denver Intl.) to Castries (SLU-George F. L. Charles) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Denver, CO (DEN-Denver Intl.) to Castries (SLU-George F. L. Charles)?
The cheapest month to fly from DEN to SLU is September 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're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Denver, CO (DEN-Denver Intl.) to Castries (SLU-George F. L. Charles)?
Enter DEN to SLU and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Denver, CO (DEN-Denver Intl.) to Castries (SLU-George F. L. Charles)?
JetBlue Airways is one of the cheapest airlines offering connecting flights from Denver, CO (DEN) to Castries (SLU), with round-trip tickets starting from around $1,020 with a layover in Logan Intl. (BOS). 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.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Denver, CO (DEN-Denver Intl.) to Castries (SLU-George F. L. Charles)?
To find a cheap flight from Denver, CO (DEN-Denver 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 Denver, CO (DEN-Denver 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.
What is the earliest flight from Denver, CO (DEN-Denver Intl.) to Castries (SLU-George F. L. Charles)?
The earliest flight from Denver (DEN) to Castries (SLU) typically leaves at around 12:15 AM, operated by American Airlines. This seasonal service is active in November and December, and an early departure can help you enjoy more time in the beautiful Caribbean. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Denver, CO (DEN-Denver Intl.) to Castries (SLU-George F. L. Charles)?
The most popular departure times for flights from Denver (DEN) to Castries (SLU) are in the late evening, from 9pm to midnight. About 27% of passengers prefer this time window. Many major carriers, including American Airlines, JetBlue, and United Airlines, offer flights during this window. This timing works well because it lets you enjoy a full day in Denver before your flight.
How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Castries (SLU-George F. L. Charles)?
Flights from DEN to SLU with one stop typically take around 22 hours 50 minutes, covering approximately 3,182 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Denver, CO (DEN-Denver Intl.) to Castries (SLU-George F. L. Charles)?
Business class seats are offered on the DEN to SLU route with Air Canada.
How do I earn miles on a Denver, CO (DEN-Denver Intl.) to Castries (SLU-George F. L. Charles) flight with Expedia?
It's easy to earn miles on a Denver, CO (DEN-Denver 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 from Denver Intl. (DEN)?
From Denver Intl. (DEN), you can fly into George F. L. Charles (SLU) to reach Castries. Some flights may connect through major hubs like Charlotte-Douglas Intl. (CLT), Dallas-Fort Worth Intl. (DFW), Sky Harbor Intl. (PHX) 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 Denver, CO (DEN-Denver Intl.) to Castries (SLU-George F. L. Charles) at the last minute?
Typically, booking a last minute flight from Denver, CO (DEN-Denver 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 Denver, CO (DEN-Denver Intl.) to Castries (SLU-George F. L. Charles) flight and hotel package?
Securing a Denver, CO (DEN-Denver 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 Denver, CO (DEN-Denver Intl.) to Castries (SLU-George F. L. Charles)?
If you booked your Denver, CO (DEN-Denver 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
Denver Intl.
Destination airport
George F. L. Charles
Roundtrip price
$846
Distance
3182 mi

*Flight schedules are subject to change.

*Available to One Key members.

 

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