DEN - SLU

$1,131 Find Cheap Flights from Denver to Castries

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Castries departing on 4/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Castries

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Castries, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Castries, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$1,131
Multiple Airlines
Sat 4/11Sat 4/18
DEN - SLU • 3 stops
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We hope you love your trip to Castries!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Denver to Castries (DEN-SLU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Castries that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Castries

Sat, Apr 11 - Sat, Apr 18
Multiple Airlines Logo
1:25 pm - 7:00 pm
DEN
-
SLU
27h 35m
3 stops
Multiple Airlines Logo
5:50 pm - 5:10 pm
SLU
-
DEN
25h 20m
3 stops
$1,131Multiple Airlines
Sat, Apr 11 - Sat, Apr 18
Multiple Airlines Logo
8:45 am - 2:35 pm
DEN
-
SLU
27h 50m
3 stops
Multiple Airlines Logo
5:50 pm - 4:38 pm
SLU
-
DEN
24h 48m
2 stops
$1,243Multiple Airlines
Wed, Mar 25 - Sun, Mar 29
Multiple Airlines Logo
1:25 pm - 12:05 pm
DEN
-
SLU
20h 40m
3 stops
Multiple Airlines Logo
6:00 pm - 10:18 am
SLU
-
DEN
18h 18m
2 stops
$1,257Multiple Airlines
Wed, Mar 25 - Sun, Mar 29
Multiple Airlines Logo
1:25 pm - 12:05 pm
DEN
-
SLU
20h 40m
3 stops
Multiple Airlines Logo
12:35 pm - 10:18 am
SLU
-
DEN
23h 43m
3 stops
$1,312Multiple Airlines
Sat, Apr 11 - Sat, Apr 18
Multiple Airlines Logo
1:25 pm - 2:35 pm
DEN
-
SLU
23h 10m
2 stops
Multiple Airlines Logo
5:50 pm - 4:38 pm
SLU
-
DEN
24h 48m
2 stops
$1,504Multiple Airlines
Sat, Mar 21 - Sat, Mar 28
Multiple Airlines Logo
7:05 pm - 7:00 pm
DEN
-
SLU
21h 55m
3 stops
Multiple Airlines Logo
5:50 pm - 4:38 pm
SLU
-
DEN
24h 48m
2 stops
$1,570Multiple Airlines
Mon, Mar 16 - Sun, Mar 22
Multiple Airlines Logo
1:25 pm - 6:25 pm
DEN
-
SLU
27h 00m
3 stops
Multiple Airlines Logo
5:00 am - 10:23 am
SLU
-
DEN
31h 23m
2 stops
$1,641Multiple Airlines
Sat, Mar 21 - Sat, Mar 28
Multiple Airlines Logo
7:05 pm - 7:00 pm
DEN
-
SLU
21h 55m
3 stops
Multiple Airlines Logo
9:10 am - 4:38 pm
SLU
-
DEN
33h 28m
3 stops
$1,664Multiple Airlines
Sat, Mar 21 - Sat, Mar 28
Multiple Airlines Logo
11:15 am - 7:00 pm
DEN
-
SLU
29h 45m
2 stops
Multiple Airlines Logo
5:50 pm - 4:38 pm
SLU
-
DEN
24h 48m
2 stops
$1,772Multiple Airlines
Mon, Mar 16 - Sun, Mar 22
Multiple Airlines Logo
1:25 pm - 6:25 pm
DEN
-
SLU
27h 00m
3 stops
Multiple Airlines Logo
5:00 am - 12:37 pm
SLU
-
DEN
33h 37m
3 stops
$1,795Multiple Airlines
Booking Insights

Good to know

Cheapest flight$1,131
Flight from Denver to Castries

When to book flights from Denver to Castries

Are your dates flexible? Find out the best times to travel from Denver to Castries based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Denver to Castries

  • What is the cheapest flight from Denver to Castries?

    In the last 3 days, the lowest price for a flight from Denver to Castries was $1,131 for a round-trip ticket.

  • Do I need a passport to fly between Denver and Castries?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Denver and on arrival in Castries.

  • Which aircraft models fly most regularly from Denver to Castries?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Denver to Castries?

    oneworld is the only airline alliance operating flights between Denver and Castries.

  • How does KAYAK find such low prices on flights from Denver to Castries?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Castries.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Castries?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Castries from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Castries?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Castries with an airline and back to Denver with another airline. Booking your flights between Denver and SLU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Castries?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Castries from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Denver to Castries

 
See real verified KAYAK customer reviews for airlines flying from Denver to Castries. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Castries? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
American AirlinesOverall score based on 11367 reviews
6.4Food
8.0Crew
7.5Boarding
7.2Comfort
6.9Entertainment
Airline reviews

For my arriving destination, we were delayed multiple times to the point that we arrived 6 hours after we were originally scheduled. On my flight home, they overbooked and involuntarily removed passengers (including me) from the plane. It was not a good experience.

2.0 MediocreHannah, Feb 2026
PBI - CLT
Read more American Airlines reviews

For my arriving destination, we were delayed multiple times to the point that we arrived 6 hours after we were originally scheduled. On my flight home, they overbooked and involuntarily removed passengers (including me) from the plane. It was not a good experience.

It was good experience this time. The flight was on time.

I very rarely fly American and my experience today reenforces that is the correct decision. While the staff were all very courteous, our flight was first thing in the morning so there was no reason to be delayed, yet appropriate maintenance checks weren’t completed prior to our flight so we were delayed multiple times. Not a great showing, American Airlines.

It's very confusing because Kayak has it as American Airlines, but it was Hawaiian Airlines, but operated by Alaska Airlines. I had to go to the airport for my boarding pass because American said I didn't have any trips.

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

Small plane, poor meal choices for first class, bad terminal and boarding experience at LAX

Lack of gluten free options in food service. I have Celiac disease and it appears you no longer offer special meals for people with dietary restrictions. I am a frequent flyer traveling into and out of Omaha airport. I have noticed over the course of several months that although our flight typically arrives ahead of schedule (awesome job AA!) - we typically sit on the runway for several minutes waiting for the ground crew to get in place. Not sure if it is a ground crew issue or a gate availability issue (due to construction at this airport). Seems to be more of a ground crew being on time issue.

Arrived early picked up my bag in a few minutes- great trip - thank you

Flight boarded, departed and landed on time. Excellent service from flight attendant in FIRST

Boarding is always an ordeal. Less dogs on flights. I am highly allergic to dogs and cats. Why are there so many animals these days?

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

Information on your arrival and departure airports

Denver (DEN)
Castries (SLU)