DEN - SLU

$818 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 4/19. 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

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$818
Multiple Airlines
Sat 9/5Fri 9/11
DEN - SLU • 2 stops
Cheapest one-way
$489
Multiple Airlines
Sun 4/19
DEN - SLU • 3 stops
Start a new search
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

Sat, Sep 5 - Fri, Sep 11
Multiple Airlines Logo
6:10 pm - 7:00 pm
DEN
-
SLU
22h 50m
2 stops
Multiple Airlines Logo
12:35 pm - 10:22 am
SLU
-
DEN
23h 47m
2 stops
$818Multiple Airlines
Thu, Jun 4 - Sun, Jun 7
Multiple Airlines Logo
6:10 pm - 7:00 pm
DEN
-
SLU
22h 50m
2 stops
Multiple Airlines Logo
12:35 pm - 10:33 am
SLU
-
DEN
23h 58m
2 stops
$919Multiple Airlines
Sun, Jun 21 - Wed, Jun 24
Multiple Airlines Logo
6:10 pm - 7:00 pm
DEN
-
SLU
22h 50m
2 stops
Multiple Airlines Logo
12:35 pm - 10:35 am
SLU
-
DEN
24h 00m
2 stops
$998Multiple Airlines
Fri, May 29 - Thu, Jun 4
Multiple Airlines Logo
6:10 pm - 7:00 pm
DEN
-
SLU
22h 50m
2 stops
Multiple Airlines Logo
5:50 pm - 4:04 pm
SLU
-
DEN
24h 14m
3 stops
$1,051Multiple Airlines
Fri, May 29 - Thu, Jun 4
Multiple Airlines Logo
6:20 pm - 10:10 pm
DEN
-
SLU
25h 50m
3 stops
Multiple Airlines Logo
5:50 pm - 4:04 pm
SLU
-
DEN
24h 14m
3 stops
$1,061Multiple Airlines
Sat, Sep 19 - Wed, Sep 23
Multiple Airlines Logo
11:35 am - 7:00 pm
DEN
-
SLU
29h 25m
2 stops
Multiple Airlines Logo
12:35 pm - 8:17 pm
SLU
-
DEN
33h 42m
2 stops
$1,063Multiple Airlines
Fri, May 29 - Thu, Jun 4
Multiple Airlines Logo
6:10 pm - 7:00 pm
DEN
-
SLU
22h 50m
2 stops
Multiple Airlines Logo
3:45 pm - 10:33 am
SLU
-
DEN
44h 48m
2 stops
$1,071Multiple Airlines
Mon, May 11 - Mon, May 18
Multiple Airlines Logo
7:50 pm - 6:25 pm
DEN
-
SLU
20h 35m
3 stops
Multiple Airlines Logo
7:10 pm - 8:28 pm
SLU
-
DEN
27h 18m
2 stops
$1,116Multiple Airlines
Fri, Jul 10 - Sat, Jul 18
Multiple Airlines Logo
6:10 pm - 7:00 pm
DEN
-
SLU
22h 50m
2 stops
Multiple Airlines Logo
12:35 pm - 10:35 am
SLU
-
DEN
24h 00m
2 stops
$1,149Multiple Airlines
Mon, May 11 - Mon, May 18
Multiple Airlines Logo
7:50 pm - 6:25 pm
DEN
-
SLU
20h 35m
3 stops
Multiple Airlines Logo
12:35 pm - 10:33 am
SLU
-
DEN
23h 58m
3 stops
$1,164Multiple Airlines
Booking Insights

Good to know

Cheapest flight$489
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 $489 for a one-way ticket and $818 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.
7.1
American AirlinesOverall score based on 11569 reviews
6.4Food
7.9Crew
7.5Boarding
6.8Entertainment
7.2Comfort
Airline reviews

Wifi was spotty. Tray table was very dirty when I sat down.

4.0 OkayTimothy, Apr 2026
JFK - LAX
Read more American Airlines reviews

Wifi was spotty. Tray table was very dirty when I sat down.

Very disappointing. Flight was delayed by 1.5 hours and food options are very underwhelming even for first class seats (same food given to economy seats)

Was not able to do a online check-in because the American Airlines system doesn't store our visa or other passport information, allowing us to have a trouble-free check-in. We were forced to have to check-in at the counter which Changes are upgrade status given that we were not able to check in much earlier.

The plane was very creaky and lots of ringing. Plane was dirty and dingy. I couldn't hear the captain's announcements from the flight deck. Not sure if it was the captain or the audio equipment, but good thing there wasn't an emergency where we needed clear instructions. The overhead compartments were clearly full, but the flight crew allowed people to stand in the back with their carry on luggage. Then after everyone boarded, they had to go to the front to gate check their luggage because there was no room for their bags and then they returned to their seats...such a waste of time when clearly the overhead compartments were full when they originally boarded.

The new planes (American Eagle) are beautiful and especially comfortable. The flight attendants are consistently professional and courteous. And, while it may seem inconsequential, the new liquid tube of coffee creamer—in contrast to the powdered coffee creamer—makes all the difference in a cup of coffee.

Cleared standby and gave up my seat. Terrible policy and boarding experience

Flight was delayed and they gave up my seat on my connection, even when I could still make the flight

The WiFi would not connect enough for me to do my actual work. It permaspooled, disconnected, said it was connected, then wouldn't open an email... it was frustrating. I am not a tall person, 5'4" - and I felt cramped with little room to reach into my bag under the seat in front of me. I feel sorry for anyone taller than me having to fly. the one positive thing I will add, is the overhead bins are roomy enough to manage more bags than other carriers.

Air condition was not working for long both after boarding and also after landing ; unbearably hot and suffocating

On time flight, good communication about boarding, lines didn't form unnecessarily for boarding before their group was announced (kept aisles clear), friendly flight attendants and service

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

Information on your arrival and departure airports

Denver (DEN)
Castries (SLU)