DEN - SLU

$996 Find Cheap Flights from Denver to Castries

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Castries departing on 2/3. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$1,621
Overall average: $1,135
Multiple Airlines
Thu 12/11Mon 12/22
DEN - SLU • 3 stops
Cheapest one-way
$996
Multiple Airlines
Tue 2/3
DEN - SLU • 2 stops
When to travel
February
Cheapest • 31% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
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

Thu, Dec 11 - Mon, Dec 22
Multiple Airlines Logo
8:45 am - 11:30 amDEN-SLU
23h 45m3 stops
Multiple Airlines Logo
12:35 pm - 4:40 pmSLU-DEN
31h 05m3 stops
$1,621Multiple Airlines
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Thu, Dec 11 - Mon, Dec 22
Multiple Airlines Logo
1:25 pm - 11:30 amDEN-SLU
19h 05m2 stops
Multiple Airlines Logo
9:10 am - 4:40 pmSLU-DEN
34h 30m3 stops
$1,659Multiple Airlines
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Wed, Feb 18 - Wed, Feb 25
Multiple Airlines Logo
1:25 pm - 1:10 pmDEN-SLU
20h 45m2 stops
Multiple Airlines Logo
10:15 am - 4:40 pmSLU-DEN
33h 25m2 stops
$1,676Multiple Airlines
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Wed, Dec 24 - Wed, Dec 31
Multiple Airlines Logo
1:25 pm - 1:10 pmDEN-SLU
20h 45m2 stops
Multiple Airlines Logo
12:35 pm - 7:55 pmSLU-DEN
34h 20m2 stops
$1,936Multiple Airlines
Find Deal
Wed, Dec 24 - Wed, Dec 31
Multiple Airlines Logo
1:25 pm - 1:10 pmDEN-SLU
20h 45m2 stops
Multiple Airlines Logo
9:10 am - 10:23 amSLU-DEN
28h 13m3 stops
$1,943Multiple Airlines
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Wed, Dec 24 - Wed, Dec 31
Multiple Airlines Logo
1:25 pm - 12:05 pmDEN-SLU
19h 40m3 stops
Multiple Airlines Logo
9:10 am - 10:23 amSLU-DEN
28h 13m3 stops
$1,998Multiple Airlines
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Wed, Feb 11 - Wed, Feb 18
Multiple Airlines Logo
5:30 pm - 3:15 pmDEN-SLU
42h 45m3 stops
Multiple Airlines Logo
10:15 am - 4:40 pmSLU-DEN
33h 25m2 stops
$3,626Multiple Airlines
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Thu, Dec 11 - Mon, Dec 22
Multiple Airlines Logo
1:25 pm - 11:30 amDEN-SLU
19h 05m2 stops
Multiple Airlines Logo
4:20 pm - 4:40 pmSLU-DEN
51h 20m2 stops
$4,092Multiple Airlines
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Booking Insights

KAYAK's insights & trends for Denver to Castries flights

Get data-powered insights and trends into flights from Denver to Castries to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Denver to Castries?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Castries, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to Castries is February, where tickets cost $575 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $1,135 and $1,007 respectively.

Find deals

Good to know

Low seasonJune
Cheapest flight$996
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly and prices are also 14% lower on average.
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 $996 for a one-way ticket and $1,621 for a round-trip.

  • 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.
7.2
American AirlinesOverall score based on 11040 reviews
6.4Food
7.2Comfort
8.0Crew
6.9Entertainment
7.5Boarding
Airline reviews

We loved the steward on the plane. He made the night enjoyable

10.0 Excellentchloe, Nov 2025ORD - ATW
Read more American Airlines reviews

We loved the steward on the plane. He made the night enjoyable

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

Flight delay was communicated before leaving for airport which caused it to be a non-event. Great flight and crew!

Did not get any refreshments. Crew was very nice but limited. Small seats

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

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

Information on your arrival and departure airports

Denver (DEN)
Castries (SLU)