$575 Cheap Flights from Shannon (SNN) to Denver (DEN)

View $575 flight on Wed, Oct 8, 2025Opens in a new window

Popular airlines from Shannon Airport (SNN) to Denver Intl. Airport (DEN)

Cheap Flights from Shannon to Denver (SNN-DEN)

Prices were available within the past 7 days and start at $575 for one-way flights and $686 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Wed, Sep 24 - Mon, Sep 29
SNN
Shannon
DEN
Denver
$686 Roundtrip, found 4 days ago
$686
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Wed, Sep 24 from Shannon to Denver, returning Mon, Sep 29, priced at $686 found 4 days ago
United
Wed, Sep 24 - Mon, Sep 29
SNN
Shannon
DEN
Denver
$693 Roundtrip, found 4 days ago
$693
Roundtrip
found 4 days ago
Select United flight, departing Wed, Sep 24 from Shannon to Denver, returning Mon, Sep 29, priced at $693 found 4 days ago
United
Wed, Sep 24 - Mon, Sep 29
SNN
Shannon
DEN
Denver
$699 Roundtrip, found 4 days ago
$699
Roundtrip
found 4 days ago
Select United flight, departing Wed, Sep 24 from Shannon to Denver, returning Mon, Sep 29, priced at $699 found 4 days ago
British Airways
Fri, Oct 31 - Mon, Nov 3
SNN
Shannon
DEN
Denver
$729 Roundtrip, found 4 days ago
$729
Roundtrip
found 4 days ago
Select British Airways flight, departing Fri, Oct 31 from Shannon to Denver, returning Mon, Nov 3, priced at $729 found 4 days ago
British Airways
Fri, Oct 31 - Mon, Nov 3
SNN
Shannon
DEN
Denver
$734 Roundtrip, found 4 days ago
$734
Roundtrip
found 4 days ago
Select British Airways flight, departing Fri, Oct 31 from Shannon to Denver, returning Mon, Nov 3, priced at $734 found 4 days ago
British Airways
Fri, Oct 31 - Mon, Nov 3
SNN
Shannon
DEN
Denver
$740 Roundtrip, found 4 days ago
$740
Roundtrip
found 4 days ago
Select British Airways flight, departing Fri, Oct 31 from Shannon to Denver, returning Mon, Nov 3, priced at $740 found 4 days ago
British Airways
Fri, Oct 31 - Mon, Nov 3
SNN
Shannon
DEN
Denver
$744 Roundtrip, found 4 days ago
$744
Roundtrip
found 4 days ago
Select British Airways flight, departing Fri, Oct 31 from Shannon to Denver, returning Mon, Nov 3, priced at $744 found 4 days ago
Air Canada
Fri, Oct 31 - Mon, Nov 3
SNN
Shannon
DEN
Denver
$752 Roundtrip, found 4 days ago
$752
Roundtrip
found 4 days ago
Select Air Canada flight, departing Fri, Oct 31 from Shannon to Denver, returning Mon, Nov 3, priced at $752 found 4 days ago
Air Canada
Fri, Oct 31 - Mon, Nov 3
SNN
Shannon
DEN
Denver
$759 Roundtrip, found 4 days ago
$759
Roundtrip
found 4 days ago
Select Air Canada flight, departing Fri, Oct 31 from Shannon to Denver, returning Mon, Nov 3, priced at $759 found 4 days ago
Aer Lingus
Wed, Mar 18 - Wed, Mar 25
SNN
Shannon
DEN
Denver
$800 Roundtrip, found 23 hours ago
$800
Roundtrip
found 23 hours ago
Select Aer Lingus flight, departing Wed, Mar 18 from Shannon to Denver, returning Wed, Mar 25, priced at $800 found 23 hours ago
Flights from Shannon (SNN) to Denver (DEN)
Origin airport
Shannon
Destination airport
Denver Intl.
Airlines serving
Aer Lingus, Air Canada, American Airlines, British Airways, JetBlue Airways
Roundtrip price
$686
Distance
4312 mi

Shannon to Denver Flights

The cheapest times to fly from Shannon to Denver

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

 

The best time to book a flight from Shannon to Denver

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

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 Shannon to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $575 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 Shannon to Denver 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 Shannon to Denver 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 Shannon Airport (SNN) to Denver Intl. Airport (DEN) cost?
Secure a cheap one-way flight from $575 or cheap return flight from $686 from Shannon Airport (SNN) to Denver Intl. Airport (DEN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Shannon Airport (SNN) to Denver Intl. Airport (DEN)?
September is the most affordable month to fly from SNN to DEN. Traveling during an off-peak travel window is often the key to scoring lower fares.
What is the cheapest airline that flies from Shannon Airport (SNN) to Denver Intl. Airport (DEN)?
To find the cheapest airline flying from SNN to DEN, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Shannon Airport (SNN) to Denver Intl. Airport (DEN)?
You'll need to book a flight with a layover if you're traveling from Shannon Airport (SNN) to Denver Intl. Airport (DEN). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from SNN to DEN?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can vary depending on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Shannon Airport (SNN) to Denver Intl. Airport (DEN)?
Choose a flight from Shannon Airport (SNN) to Denver Intl. Airport (DEN) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures later than this 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 Shannon Airport (SNN) to Denver Intl. Airport (DEN) last-minute?
Holding off until right before your break to book a ticket from SNN to DEN often results in higher prices. While you may come across some last-minute offers, they aren't always guaranteed. Allow some flexibility in your schedule to boost your chances of landing a bargain.
Is it cheaper to book a SNN to DEN flight and hotel package?
Opting for a SNN to DEN flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Select from our extensive range of stays and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Shannon Airport (SNN) to Denver Intl. Airport (DEN)?
If you reserved your SNN to DEN flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the ticket 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 for more information.

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*Available to One Key members.