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Cheap flights from Denver to Donegal from €1,083

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Donegal departing on 4/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Denver to Donegal

Cheap return flights

Enter your travel dates to find the best prices.
Aer Lingus Logo
14:21 - 20:00DEN  Denver Intl-CFN Donegal
22h 39m2 stops Chicago O'Hare Intl Dublin
Aer Lingus Logo
07:55 - 08:37CFN  Donegal-DEN Denver Intl
31h 42m2 stops Dublin Chicago O'Hare Intl
€1,083Aer Lingus
Fri, 4 Sep - Tue, 15 Sep
Aer Lingus Logo
14:21 - 14:00DEN  Denver Intl-CFN Donegal
16h 39m2 stops Chicago O'Hare Intl Dublin
Aer Lingus Logo
14:30 - 18:15CFN  Donegal-DEN Denver Intl
34h 45m1 stop Dublin
€1,106Aer Lingus
Fri, 4 Sep - Tue, 15 Sep
Multiple Airlines Logo
23:37 - 14:00DEN  Denver Intl-CFN Donegal
31h 23m2 stops Boston Logan Intl Dublin
Multiple Airlines Logo
14:30 - 18:15CFN  Donegal-DEN Denver Intl
34h 45m1 stop Dublin
€1,116Multiple Airlines
Fri, 4 Sep - Tue, 15 Sep
Aer Lingus Logo
14:21 - 20:00DEN  Denver Intl-CFN Donegal
22h 39m2 stops Chicago O'Hare Intl Dublin
Aer Lingus Logo
07:55 - 08:37CFN  Donegal-DEN Denver Intl
31h 42m2 stops Dublin Chicago O'Hare Intl
€1,117Aer Lingus
Fri, 4 Sep - Tue, 15 Sep
Aer Lingus Logo
20:00 - 14:00DEN  Denver Intl-CFN Donegal
11h 00m1 stop Dublin
Aer Lingus Logo
14:30 - 18:15CFN  Donegal-DEN Denver Intl
34h 45m1 stop Dublin
€1,222Aer Lingus
Fri, 4 Sep - Tue, 15 Sep
Multiple Airlines Logo
20:00 - 14:00DEN  Denver Intl-CFN Donegal
11h 00m1 stop Dublin
Multiple Airlines Logo
14:30 - 18:15CFN  Donegal-DEN Denver Intl
34h 45m1 stop Dublin
€1,248Multiple Airlines
Fri, 4 Sep - Tue, 15 Sep
British Airways Logo
18:35 - 14:00DEN  Denver Intl-CFN Donegal
36h 25m2 stops London Heathrow Dublin
British Airways Logo
14:30 - 16:25CFN  Donegal-DEN Denver Intl
32h 55m2 stops Dublin London Heathrow
€1,476British Airways
Sat, 17 Oct - Wed, 21 Oct

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Aer Lingus flights from Denver to Donegal

Our best Aer Lingus deals on Denver to Donegal flight tickets
Aer Lingus
4 Sept
DEN14:21Denver Intl
22h 39m
2 stops
CFN20:00Donegal
15 Sept
CFN07:55Donegal
31h 42m
2 stops
DEN08:37Denver Intl
€1,083
Aer Lingus
4 Sept
DEN14:21Denver Intl
16h 39m
2 stops
CFN14:00Donegal
15 Sept
CFN14:30Donegal
34h 45m
1 stop
DEN18:15Denver Intl
€1,106
Aer Lingus
4 Sept
DEN14:21Denver Intl
22h 39m
2 stops
CFN20:00Donegal
15 Sept
CFN07:55Donegal
31h 42m
2 stops
DEN08:37Denver Intl
€1,117

momondo Fare Finder

 
Customise your flight search to find flights from Denver to Donegal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 13,528 searches. Data last updated 17 August 2026.
Use the filters below to find and compare flights from Denver to Donegal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DenverDonegal

DEN Denver Intl - CFN Donegal

DENCFN

Denver Intl

Fri 4/9

14:21-20:00

2 stops22h 39m

Donegal

Tue 15/9

07:55-08:37

2 stops31h 42m

€1,083

DenverDonegal

DEN Denver Intl - CFN Donegal

DENCFN

Denver Intl

Fri 4/9

14:21-14:00

2 stops16h 39m

Donegal

Tue 15/9

14:30-18:15

1 stop34h 45m

€1,106

DenverDonegal

DEN Denver Intl - CFN Donegal

DENCFN

Denver Intl

Fri 4/9

23:37-14:00

2 stops31h 23m

Donegal

Tue 15/9

14:30-18:15

1 stop34h 45m

€1,116

DenverDonegal

DEN Denver Intl - CFN Donegal

DENCFN

Denver Intl

Fri 4/9

14:21-20:00

2 stops22h 39m

Donegal

Tue 15/9

07:55-08:37

2 stops31h 42m

€1,117
Fastest return journey

DenverDonegal

DEN Denver Intl - CFN Donegal

DENCFN

Denver Intl

Fri 4/9

20:00-14:00

1 stop11h 00m

Donegal

Tue 15/9

14:30-18:15

1 stop34h 45m

€1,222

DenverDonegal

DEN Denver Intl - CFN Donegal

DENCFN

Denver Intl

Fri 4/9

20:00-14:00

1 stop11h 00m

Donegal

Tue 15/9

14:30-18:15

1 stop34h 45m

€1,248

DenverDonegal

DEN Denver Intl - CFN Donegal

DENCFN

Denver Intl

Sat 17/10

18:35-14:00

2 stops36h 25m

Donegal

Wed 21/10

14:30-16:25

2 stops32h 55m

€1,476

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Denver to Donegal

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Donegal according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Denver to Donegal (DEN to CFN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to Donegal

Best price found

€1,083

Fastest flight time

31h 23m

Direct flights

None
The best flight deal from Denver to Donegal found on momondo in the last 72 hours is €1,083
The fastest flight from Denver to Donegal takes 31h 23m
There are no direct flights from Denver to Donegal. There are no popular flight routes from Denver to Donegal.
Search flight deals

Frequently asked questions about flying from Denver to Donegal

  • How far is Denver Intl to Donegal by plane?

    Donegal is 6898.3 km away from Denver Intl. In terms of flight time, this usually takes a little over 31h 23m.

  • When did momondo last update prices for flights from Denver Intl Airport to Donegal Airport?

    Prices for flights from Denver Intl Airport to Donegal Airport refresh daily.

  • How old do you have to be to fly from Denver Intl Airport to Donegal Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Denver Intl Airport to Donegal Airport.

  • What documentation or ID do you need to fly to Donegal Airport?

    The travel and health documents required for your trip to Donegal Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Donegal Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Frequently asked questions about flying from Denver to Donegal

  • How do I get Price Alerts for flights from Denver to Donegal?

    Price Alerts will notify you by email when the price for flights to Donegal from Denver decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Denver to Donegal with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Travelling to a place near Donegal?

Book flights to Donegal if you plan to visit one of these locations
Letterkenny
Bundoran
Killybegs

Why use momondo?

Why should I use momondo to find a flight deal from Denver to Donegal?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Donegal from Denver.

Can I find flights from Denver to Donegal with flexible booking policies on momondo?

Flights from Denver to Donegal with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Denver to Donegal?

Once all potential Denver to Donegal flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Denver to Donegal right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Denver to Donegal now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Donegal and let you know when they change.

An easier way to manage your Donegal trip

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