$484 Cheap Flights from Denver (DEN) to Islay (ILY)

View $484 flight on Wed, Jul 15, 2026Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Islay (ILY)

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Cheap Flights from Denver to Islay (DEN-ILY)

Prices were available within the past 7 days and start at $484 for one-way flights and $1,078 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aer Lingus
Mon, May 18 - Sun, May 24
DEN
Denver
ILY
Islay Island
$1,078 Roundtrip, found 18 hours ago
$1,078
Roundtrip
found 18 hours ago
Select Aer Lingus flight, departing Mon, May 18 from Denver to Islay Island, returning Sun, May 24, priced at $1,078 found 18 hours ago
Aer Lingus
Sun, May 17 - Sun, May 24
DEN
Denver
ILY
Islay Island
$1,117 Roundtrip, found 18 hours ago
$1,117
Roundtrip
found 18 hours ago
Select Aer Lingus flight, departing Sun, May 17 from Denver to Islay Island, returning Sun, May 24, priced at $1,117 found 18 hours ago
Icelandair
Sun, May 17 - Wed, May 27
DEN
Denver
ILY
Islay Island
$1,137 Roundtrip, found 18 hours ago
$1,137
Roundtrip
found 18 hours ago
Select Icelandair flight, departing Sun, May 17 from Denver to Islay Island, returning Wed, May 27, priced at $1,137 found 18 hours ago
Aer Lingus
Mon, May 18 - Wed, May 27
DEN
Denver
ILY
Islay Island
$1,151 Roundtrip, found 18 hours ago
$1,151
Roundtrip
found 18 hours ago
Select Aer Lingus flight, departing Mon, May 18 from Denver to Islay Island, returning Wed, May 27, priced at $1,151 found 18 hours ago
Aer Lingus
Mon, May 18 - Tue, May 26
DEN
Denver
ILY
Islay Island
$1,153 Roundtrip, found 18 hours ago
$1,153
Roundtrip
found 18 hours ago
Select Aer Lingus flight, departing Mon, May 18 from Denver to Islay Island, returning Tue, May 26, priced at $1,153 found 18 hours ago
Aer Lingus
Mon, May 18 - Thu, May 28
DEN
Denver
ILY
Islay Island
$1,159 Roundtrip, found 18 hours ago
$1,159
Roundtrip
found 18 hours ago
Select Aer Lingus flight, departing Mon, May 18 from Denver to Islay Island, returning Thu, May 28, priced at $1,159 found 18 hours ago
Aer Lingus
Mon, May 18 - Wed, May 27
DEN
Denver
ILY
Islay Island
$1,163 Roundtrip, found 18 hours ago
$1,163
Roundtrip
found 18 hours ago
Select Aer Lingus flight, departing Mon, May 18 from Denver to Islay Island, returning Wed, May 27, priced at $1,163 found 18 hours ago
British Airways
Mon, May 18 - Wed, May 27
DEN
Denver
ILY
Islay Island
$1,165 Roundtrip, found 18 hours ago
$1,165
Roundtrip
found 18 hours ago
Select British Airways flight, departing Mon, May 18 from Denver to Islay Island, returning Wed, May 27, priced at $1,165 found 18 hours ago
Aer Lingus
Mon, May 18 - Wed, May 27
DEN
Denver
ILY
Islay Island
$1,166 Roundtrip, found 18 hours ago
$1,166
Roundtrip
found 18 hours ago
Select Aer Lingus flight, departing Mon, May 18 from Denver to Islay Island, returning Wed, May 27, priced at $1,166 found 18 hours ago
Aer Lingus
Mon, May 18 - Wed, May 27
DEN
Denver
ILY
Islay Island
$1,176 Roundtrip, found 18 hours ago
$1,176
Roundtrip
found 18 hours ago
Select Aer Lingus flight, departing Mon, May 18 from Denver to Islay Island, returning Wed, May 27, priced at $1,176 found 18 hours ago

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Frequently asked questions

How much does a flight from Denver Intl. Airport (DEN) to Islay Airport (ILY) cost?
Lock in a cheap one-way flight from $484 or cheap return flight from $1,078 from Denver Intl. Airport (DEN) to Islay Airport (ILY) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Denver Intl. Airport (DEN) to Islay Airport (ILY)?
The cheapest month to fly from DEN to ILY is May, when there's less demand. Off-peak months are usually when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Denver Intl. Airport (DEN) to Islay Airport (ILY)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll take you from DEN to ILY. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Denver Intl. Airport (DEN) to Islay Airport (ILY)?
Direct flights from Denver Intl. Airport (DEN) to Islay Airport (ILY) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from DEN to ILY?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary depending on a number of factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Denver Intl. Airport (DEN) to Islay Airport (ILY)?
Select a flight from Denver Intl. Airport (DEN) to Islay Airport (ILY) that takes off before 3 PM to reduce the risk of cancellations and delays. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Denver Intl. Airport (DEN) to Islay Airport (ILY) last-minute?
Waiting until right before your break to book a flight from DEN to ILY generally means paying more. While you may find some last-minute offers, they're not always guaranteed. Be flexible with your itinerary to boost your chances of scoring a bargain.
Is it cheaper to book a DEN to ILY flight and hotel package?
You can save money by booking a DEN to ILY flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After choosing your ideal accommodations and flights, you can add extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to Islay Airport (ILY)?
Typically, you're able to cancel or reschedule your DEN to ILY flight. However, additional fees may apply, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you'd like further details, head to our Customer Service portal.

Travel information

Origin airport
Denver Intl.
Destination airport
Islay
Airlines serving
British Airways
Roundtrip price
$1,077
Distance
4299 mi

Book with confidence

Denver to Islay Flights

The cheapest times to fly from Denver to Islay

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to Islay are during the month of May. You can find some of the cheapest flights from Denver to Islay with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to Islay

Sunday is one of the best days to book for cheap flights from Denver to Islay: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Denver to Islay

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to Islay in 2026. You can also book with separate airlines for your outbound and return journeys, from $484 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to Islay flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Denver to Islay airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Denver to Islay Flights

*Flight schedules are subject to change.

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*Available to One Key members.