$409 Cheap Flights from Denver (DEN) to Knock (NOC)

View $409 flight on Sat, Oct 25, 2025Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Knock (NOC-Ireland West)

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Cheap Flights from Denver to Knock (DEN-NOC)

Prices were available within the past 7 days and start at $409 for one-way flights and $758 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, Oct 9 - Thu, Oct 16
DEN
Denver
NOC
Knock
$758 Roundtrip, found 1 day ago
$758
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Oct 9 from Denver to Knock, returning Thu, Oct 16, priced at $758 found 1 day ago
Air Canada
Thu, Oct 9 - Thu, Oct 16
DEN
Denver
NOC
Knock
$783 Roundtrip, found 1 day ago
$783
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Oct 9 from Denver to Knock, returning Thu, Oct 16, priced at $783 found 1 day ago
British Airways
Thu, Oct 9 - Thu, Oct 16
DEN
Denver
NOC
Knock
$794 Roundtrip, found 1 day ago
$794
Roundtrip
found 1 day ago
Select British Airways flight, departing Thu, Oct 9 from Denver to Knock, returning Thu, Oct 16, priced at $794 found 1 day ago
British Airways
Fri, Aug 15 - Sat, Aug 23
DEN
Denver
NOC
Knock
$804 Roundtrip, found 3 days ago
$804
Roundtrip
found 3 days ago
Select British Airways flight, departing Fri, Aug 15 from Denver to Knock, returning Sat, Aug 23, priced at $804 found 3 days ago
Air Canada
Thu, Oct 9 - Thu, Oct 16
DEN
Denver
NOC
Knock
$818 Roundtrip, found 1 day ago
$818
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Oct 9 from Denver to Knock, returning Thu, Oct 16, priced at $818 found 1 day ago
Air Canada
Thu, Oct 9 - Thu, Oct 16
DEN
Denver
NOC
Knock
$843 Roundtrip, found 1 day ago
$843
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Oct 9 from Denver to Knock, returning Thu, Oct 16, priced at $843 found 1 day ago
Iberia
Thu, Oct 9 - Thu, Oct 16
DEN
Denver
NOC
Knock
$845 Roundtrip, found 1 day ago
$845
Roundtrip
found 1 day ago
Select Iberia flight, departing Thu, Oct 9 from Denver to Knock, returning Thu, Oct 16, priced at $845 found 1 day ago
British Airways
Fri, Aug 15 - Sat, Aug 23
DEN
Denver
NOC
Knock
$855 Roundtrip, found 3 days ago
$855
Roundtrip
found 3 days ago
Select British Airways flight, departing Fri, Aug 15 from Denver to Knock, returning Sat, Aug 23, priced at $855 found 3 days ago
JetBlue Airways
Thu, Oct 9 - Thu, Oct 16
DEN
Denver
NOC
Knock
$913 Roundtrip, found 1 day ago
$913
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Thu, Oct 9 from Denver to Knock, returning Thu, Oct 16, priced at $913 found 1 day ago
Finnair
Fri, Aug 15 - Sat, Aug 23
DEN
Denver
NOC
Knock
$933 Roundtrip, found 3 days ago
$933
Roundtrip
found 3 days ago
Select Finnair flight, departing Fri, Aug 15 from Denver to Knock, returning Sat, Aug 23, priced at $933 found 3 days ago
Flights from Denver (DEN) to Knock (NOC)
Origin airport
Denver Intl.
Destination airport
Ireland West
Airlines serving
British Airways
Roundtrip price
$758
Distance
4273 mi

Denver to Knock Flights

The cheapest times to fly from Denver to Knock

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

 

The best time to book a flight from Denver to Knock

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

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 Knock in 2025. You can also book with separate airlines for your outbound and return journeys, from $409 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 Knock 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 Knock 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 Ireland West Airport (NOC) cost?
Discover the latest flight deals from DEN to NOC by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from DEN to NOC?
The cheapest flights from DEN to NOC are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from DEN to NOC?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from DEN to NOC. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Denver Intl. Airport (DEN) to Ireland West Airport (NOC)?
There are no daily direct flights from Denver Intl. Airport (DEN) to Ireland West Airport (NOC). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way in no time.
What day of the week has the most flights from DEN to NOC?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change depending on a range of factors, including 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 Ireland West Airport (NOC)?
To touch down at Ireland West Airport (NOC) on time, opt for a flight that leaves from Denver Intl. Airport (DEN) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Ireland West Airport (NOC) last-minute?
Booking your flight from DEN to NOC right before your journey is usually more expensive. But if there's some wiggle room with your departure dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a DEN to NOC flight and hotel package?
You can save money by securing a DEN to NOC 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 it all in one place. Once you've chosen your preferred flights and accommodations, consider adding extras such as tours, activities and car rentals.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to Ireland West Airport (NOC)?
In most cases, you can cancel or modify your DEN to NOC flight. However, there may be additional charges, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you need further information, visit our Customer Service portal.

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*Available to One Key members.