$594 Cheap Flights from Denver (DEN) to Kirkwall (KOI)

View $594 flight on Fri, Jul 17, 2026Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Kirkwall (KOI)

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Cheap Flights from Denver to Kirkwall (DEN-KOI)

Prices were available within the past 7 days and start at $594 for one-way flights and $868 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Wed, Jan 7 - Wed, Jan 21
DEN
Denver
KOI
Kirkwall
$868 Roundtrip, found 5 days ago
$868
Roundtrip
found 5 days ago
Select Icelandair flight, departing Wed, Jan 7 from Denver to Kirkwall, returning Wed, Jan 21, priced at $868 found 5 days ago
Icelandair
Tue, Jan 6 - Wed, Jan 21
DEN
Denver
KOI
Kirkwall
$896 Roundtrip, found 5 days ago
$896
Roundtrip
found 5 days ago
Select Icelandair flight, departing Tue, Jan 6 from Denver to Kirkwall, returning Wed, Jan 21, priced at $896 found 5 days ago
British Airways
Wed, Jan 7 - Wed, Jan 21
DEN
Denver
KOI
Kirkwall
$961 Roundtrip, found 5 days ago
$961
Roundtrip
found 5 days ago
Select British Airways flight, departing Wed, Jan 7 from Denver to Kirkwall, returning Wed, Jan 21, priced at $961 found 5 days ago
British Airways
Wed, Jan 7 - Wed, Jan 21
DEN
Denver
KOI
Kirkwall
$964 Roundtrip, found 5 days ago
$964
Roundtrip
found 5 days ago
Select British Airways flight, departing Wed, Jan 7 from Denver to Kirkwall, returning Wed, Jan 21, priced at $964 found 5 days ago
British Airways
Wed, Jan 7 - Wed, Jan 21
DEN
Denver
KOI
Kirkwall
$967 Roundtrip, found 5 days ago
$967
Roundtrip
found 5 days ago
Select British Airways flight, departing Wed, Jan 7 from Denver to Kirkwall, returning Wed, Jan 21, priced at $967 found 5 days ago
Icelandair
Thu, Apr 9 - Mon, Apr 20
DEN
Denver
KOI
Kirkwall
$984 Roundtrip, found 1 day ago
$984
Roundtrip
found 1 day ago
Select Icelandair flight, departing Thu, Apr 9 from Denver to Kirkwall, returning Mon, Apr 20, priced at $984 found 1 day ago
British Airways
Thu, Jan 8 - Wed, Jan 21
DEN
Denver
KOI
Kirkwall
$1,004 Roundtrip, found 5 days ago
$1,004
Roundtrip
found 5 days ago
Select British Airways flight, departing Thu, Jan 8 from Denver to Kirkwall, returning Wed, Jan 21, priced at $1,004 found 5 days ago
British Airways
Wed, Jan 7 - Wed, Jan 21
DEN
Denver
KOI
Kirkwall
$1,043 Roundtrip, found 5 days ago
$1,043
Roundtrip
found 5 days ago
Select British Airways flight, departing Wed, Jan 7 from Denver to Kirkwall, returning Wed, Jan 21, priced at $1,043 found 5 days ago
American Airlines
Fri, Jul 17 - Fri, Jul 31
DEN
Denver
KOI
Kirkwall
$1,246 Roundtrip, found 2 days ago
$1,246
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Jul 17 from Denver to Kirkwall, returning Fri, Jul 31, priced at $1,246 found 2 days ago
Alaska Airlines
Fri, Jul 17 - Fri, Jul 31
DEN
Denver
KOI
Kirkwall
$1,394 Roundtrip, found 2 days ago
$1,394
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Fri, Jul 17 from Denver to Kirkwall, returning Fri, Jul 31, priced at $1,394 found 2 days ago
Flights from Denver (DEN) to Kirkwall (KOI)
Origin airport
Denver Intl.
Destination airport
Kirkwall
Roundtrip price
$867
Distance
4289 mi

Denver to Kirkwall Flights

The cheapest times to fly from Denver to Kirkwall

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 Kirkwall are during the month of January. You can find some of the cheapest flights from Denver to Kirkwall with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to Kirkwall

Sunday is one of the best days to book for cheap flights from Denver to Kirkwall: 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 Kirkwall

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 Kirkwall in 2026. You can also book with separate airlines for your outbound and return journeys, from $594 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 Kirkwall 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 Kirkwall 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.

 

Frequently asked questions

How much does a flight from Denver Intl. Airport (DEN) to Kirkwall Airport (KOI) cost?
Get a cheap one-way flight from $594 or cheap return flight from $868 from Denver Intl. Airport (DEN) to Kirkwall Airport (KOI) 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 Kirkwall Airport (KOI)?
The cheapest month to fly from DEN to KOI is January, when there's less demand. Off-peak season is typically when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Denver Intl. Airport (DEN) to Kirkwall Airport (KOI)?
To find the cheapest airline that'll fly you from DEN to KOI, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Denver Intl. Airport (DEN) to Kirkwall Airport (KOI)?
You'll have to hop on a flight with a layover when traveling from Denver Intl. Airport (DEN) to Kirkwall Airport (KOI). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from DEN to KOI?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary depending on various factors, such as the time of year and airline.*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 Kirkwall Airport (KOI)?
Choose a flight from Denver Intl. Airport (DEN) to Kirkwall Airport (KOI) that takes off before 3 PM to reduce the risk of cancellations and delays. Departures after this time are on average 22% more likely to be canceled.**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 Kirkwall Airport (KOI) last-minute?
Booking your plane ticket from DEN to KOI right before your journey is generally more expensive. But if there's some wiggle room with your departure times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book a DEN to KOI flight and hotel package?
Compared with arranging hotels and flights separately, booking a DEN to KOI flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place takes the hassle out of planning your trip. Just secure your flights and select from our wide range of hotels, then tailor your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to Kirkwall Airport (KOI)?
If you reserved your DEN to KOI flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the fare type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

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*Available to One Key members.