HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Castries

$483+ Cheap flights from Denver (DEN) to Castries (SLU)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/20. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SLU
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denver to Castries with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Denver to Castries

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Castries (SLU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$1,189
(Mytrip)

One-way from

$483
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$515
From Denver Intl to Castries George F. L. Charle
Search Deals
One-way flight from Denver Intl to Castries George F. L. Charle
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($121 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Denver to Castries

Cheapest flights from Denver to Castries
Explore the most affordable flight options available from Denver to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Trip.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/64:08 pmDEN - SLU
2 stops42h 02mMultiple Airlines
Mon 11/104:35 pmSLU - DEN
2 stops35h 33mMultiple Airlines
Deal found 9/9$688
This Mytrip deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/267:45 amDEN - SLU
2 stops27h 25mMultiple Airlines
Tue 9/307:30 amSLU - DEN
2 stops34h 59mMultiple Airlines
Deal found 9/10$1,189
This Mytrip deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/277:15 amDEN - SLU
3 stops26h 30mMultiple Airlines
Sat 10/46:20 pmSLU - DEN
3 stops23h 08mMultiple Airlines
Deal found 9/9$1,223
This Expedia deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/185:30 pmDEN - SLU
2 stops44h 20mMultiple Airlines
Sun 10/2612:30 pmSLU - DEN
3 stops47h 53mMultiple Airlines
Deal found 9/10$3,656
This Expedia deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/109:53 amDEN - SLU
2 stops46h 37mMultiple Airlines
Sun 12/145:00 amSLU - DEN
2 stops32h 23mMultiple Airlines
Deal found 9/10$3,658
This Expedia deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/231:25 pmDEN - SLU
2 stops23h 25mMultiple Airlines
Mon 12/14:35 pmSLU - DEN
2 stops51h 05mMultiple Airlines
Deal found 9/9$3,716
This Orbitz deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/257:45 amDEN - SLU
3 stops25h 45mMultiple Airlines
Wed 10/110:15 amSLU - DEN
3 stops56h 14mMultiple Airlines
Deal found 9/9$3,786

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Castries that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Denver to Castries that are best for you.

Fly from

Denver

Fly to

Castries

Route

Depart

Return

Price

DenverCastries

DEN - SLU

DENSLU

Denver Intl

Thu 11/6

4:08 pm-1:10 pm

2 stops42h 02m

Castries George F. L. Charle

Mon 11/10

4:35 pm-1:08 am

2 stops35h 33m

$688

DenverCastries

DEN - SLU

DENSLU

Denver Intl

Fri 9/26

7:45 am-1:10 pm

2 stops27h 25m

Castries George F. L. Charle

Tue 9/30

7:30 am-4:29 pm

2 stops34h 59m

$1,189

DenverCastries

DEN - SLU

DENSLU

Denver Intl

Sat 9/27

7:15 am-11:45 am

3 stops26h 30m

Castries George F. L. Charle

Sat 10/4

6:20 pm-3:28 pm

3 stops23h 08m

$1,223

DenverCastries

DEN - SLU

DENSLU

Denver Intl

Sat 10/18

5:30 pm-3:50 pm

2 stops44h 20m

Castries George F. L. Charle

Sun 10/26

5:00 am-10:23 am

2 stops31h 23m

$3,656

DenverCastries

DEN - SLU

DENSLU

Denver Intl

Wed 12/10

9:53 am-1:10 pm

2 stops24h 17m

Castries George F. L. Charle

Sun 12/14

12:30 pm-4:40 pm

3 stops55h 10m

$3,658

DenverCastries

DEN - SLU

DENSLU

Denver Intl

Fri 2/20

9:05 pm-10:10 pm

3 stops22h 05m

$483

DenverCastries

DEN - SLU

DENSLU

Denver Intl

Sat 12/13

3:26 pm-11:45 am

2 stops17h 19m

$510

DenverCastries

DEN - SLU

DENSLU

Denver Intl

Sun 12/14

6:02 pm-8:45 am

3 stops35h 43m

$563

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Best time to book a flight from Denver to Castries

Have a flexible travel schedule? Discover the best time to fly to Castries from Denver with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Denver to Castries

What is the cheapest month to book a flight from Denver to Castries?

Currently, August is the cheapest month in which you can book a flight from Denver to Castries (average of $525). Flying from Denver to Castries in July is currently the most expensive (average of $767). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Castries

Get insights into the airlines that provide service to Castries. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Castries. Reviews last updated September 11, 2025.
Peruse reviews from past customers who have flown with American Airlines from Denver to Castries to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Crew

8.0

Overall

7.2

Entertainment

6.9

Comfort

7.2

Food

6.4

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Crew

8.0

Overall

7.2

Entertainment

6.9

Comfort

7.2

Food

6.4

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

Related info for your journey

Find useful and relevant information for your journey from Denver to Castries. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Denver to Castries round-trip?

    Our cheapest airline available from Denver to Castries is American Airlines. Our recent data shows that you can find tickets from as low as $575 on this airline. American Airlines is priced at 27% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Denver to Castries that include hotel bookings?

    Yes. In addition to deals on Denver to Castries flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Castries?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Castries.

  • Can I find deals for business class flights from Denver to Castries?

    Yes. Cheapflights offers flight deals from Denver to Castries by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Denver to Castries?

    Currently, August is the cheapest month in which you can book a flight from Denver to Castries (average of $525). Flying from Denver to Castries in July is currently the most expensive (average of $767). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Castries?

Book flights to Castries if you plan to visit one of these locations
Rodney Bay
Gros Islet
Marigot Bay

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Denver to Castries

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Castries flights
Colorado Springs to Castries flights

Top airline flying from Denver to Castries

Discover the top airline that operate flights from Denver to Castries. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$575Average$843FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.