$523 Cheap Aer Lingus flights Denver (DEN) to Shannon (SNN)

View $523 flight on Sun, Aug 31, 2025Opens in a new window

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$523 Cheap Aer Lingus flights Denver (DEN) to Shannon (SNN)

Prices were available within the past 7 days and start at $523 for one-way flights and $678 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aer Lingus
Mon, Nov 10 - Mon, Dec 29
DEN
Denver
SNN
Shannon
$678 Roundtrip, found 4 days ago
$678
Roundtrip
found 4 days ago
Select Aer Lingus flight, departing Mon, Nov 10 from Denver to Shannon, returning Mon, Dec 29, priced at $678 found 4 days ago
Flights from Denver (DEN) to Shannon (SNN)
Origin airport
Denver Intl.
Destination airport
Shannon
Airlines serving
Aer Lingus, Air Canada, American Airlines, British Airways, Delta, JetBlue Airways, Lufthansa, United
Popular airline
British Airways
Distance
4312 mi

Frequently asked questions

How much is an Aer Lingus flight from Denver Intl. Airport (DEN) to Shannon Airport (SNN)?
You can discover cheap round-trip Aer Lingus flights from $678 from DEN to SNN by organizing your results from "Price (lowest to highest)" on Expedia. Or search for deals from $523 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from DEN to SNN with Aer Lingus?
Search for one-way or round-trip flights to Shannon in January or February. You could find cheaper fares with Aer Lingus during these off-peak times.
What is the cheapest time to book flights from Denver Intl. Airport (DEN) to Shannon Airport (SNN) with Aer Lingus?
Landing the best Aer Lingus deals from DEN to SNN often comes down to booking at the right moment. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. Better yet, you can pocket 17% on average by buying your tickets on a Sunday rather than a Friday, which is usually the most expensive day to book.* It's a good idea to start searching for flights about one month before your departure date.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Aer Lingus fly nonstop from Denver Intl. Airport (DEN) to Shannon Airport (SNN)?
Use our "Nonstop" filter when searching for direct Aer Lingus flights from DEN to SNN. It's also a great way to compare other carriers servicing the same nonstop trip.
What is the earliest Aer Lingus flight from DEN to SNN?
Search Aer Lingus's earliest flights from DEN to SNN by using our "Morning" and "Early Morning" filters. Not only will you arrive at your destination sooner, early departures also have a 20% less chance of being canceled.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Aer Lingus fly into in Shannon?
Aer Lingus flights from Denver Intl. Airport (DEN) to Shannon land at Shannon Airport (SNN). This is the main entry point to this city.
What kind of luggage can I take on an Aer Lingus flight from Denver Intl. Airport (DEN) to Shannon Airport (SNN)?
On a standard economy flight with Aer Lingus from DEN to SNN, you can bring 1 checked-in bag up to 50 lb with dimensions no larger than 62 inches in total. For hand luggage, you're permitted 1 cabin bag weighing up to 22 lb and measuring less than 21 inches x 15 inches x 9 inches. Size and weight restrictions can differ based on your cabin class and fare type. To make sure you don't get caught with additional charges at the terminal, double-check your Aer Lingus booking or go to the airline's website before packing your bags.
Why fly with Aer Lingus from DEN to SNN?
Aer Lingus makes flying from DEN to SNN enjoyable with a 4-star airline rating and a rewarding loyalty program. You also have the chance to earn points with Aer Lingus AerClub. Remember to sign up to Expedia's free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Aer Lingus flight from Denver Intl. Airport (DEN) to Shannon Airport (SNN)?
In most cases, you can cancel or modify your flight, although additional fees may apply if you made your booking over 24 hours ago. Need to keep your options open? Make use of Expedia's "Changes included" or "No cancel fee" filter to find flights that won't penalize you if you have to adjust your plans. To modify your booking, go to "Trips," select your flight and click on "Manage Booking" for further information.

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*Available to One Key members.