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Cheap flights from Colorado to Donegal from $1,038

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Donegal departing on 9/5. 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 Colorado to Donegal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Aer Lingus Logo
2:09 pm - 8:00 pmDEN  Denver Intl-CFN Donegal
22h 51m2 stops Chicago O'Hare Intl Dublin
Aer Lingus Logo
7:55 am - 6:15 pmCFN  Donegal-DEN Denver Intl
17h 20m1 stop Dublin
$1,038Aer Lingus
Sat, Sep 5 - Wed, Sep 16
Multiple Airlines Logo
8:00 pm - 8:00 pmDEN  Denver Intl-CFN Donegal
17h 00m1 stop Dublin
Multiple Airlines Logo
7:55 am - 6:15 pmCFN  Donegal-DEN Denver Intl
17h 20m1 stop Dublin
$1,052Multiple Airlines
Sat, Sep 5 - Wed, Sep 16
Aer Lingus Logo
2:09 pm - 2:00 pmDEN  Denver Intl-CFN Donegal
40h 51m2 stops Chicago O'Hare Intl Dublin
Aer Lingus Logo
2:30 pm - 12:17 amCFN  Donegal-DEN Denver Intl
16h 47m2 stops Dublin Chicago O'Hare Intl
$1,060Aer Lingus
Sat, Sep 5 - Wed, Sep 16
British Airways Logo
5:05 pm - 8:00 pmDEN  Denver Intl-CFN Donegal
19h 55m2 stops London Heathrow Dublin
British Airways Logo
2:30 pm - 3:10 pmCFN  Donegal-DEN Denver Intl
31h 40m2 stops Dublin London Heathrow
$1,078British Airways
Thu, Nov 12 - Mon, Nov 16
British Airways Logo
5:01 pm - 8:00 pmDEN  Denver Intl-CFN Donegal
19h 59m2 stops London Heathrow Dublin
British Airways Logo
2:30 pm - 3:10 pmCFN  Donegal-DEN Denver Intl
55h 40m2 stops Dublin London Heathrow
$1,187British Airways
Wed, Dec 2 - Sun, Dec 6
British Airways Logo
5:05 pm - 8:00 pmDEN  Denver Intl-CFN Donegal
19h 55m2 stops London Heathrow Dublin
British Airways Logo
2:30 pm - 3:10 pmCFN  Donegal-DEN Denver Intl
31h 40m2 stops Dublin London Heathrow
$1,228British Airways
Thu, Nov 12 - Mon, Nov 16
Multiple Airlines Logo
8:10 pm - 6:45 pmDEN  Denver Intl-CFN Donegal
15h 35m2 stops Reykjavik Keflavik Intl Glasgow Intl
Multiple Airlines Logo
7:55 am - 11:08 pmCFN  Donegal-DEN Denver Intl
22h 13m3 stops Dublin London Heathrow Vancouver Intl
$1,551Multiple Airlines
Sat, Sep 5 - Wed, Sep 16
Multiple Airlines Logo
4:40 pm - 8:00 pmDEN  Denver Intl-CFN Donegal
20h 20m3 stops Reykjavik Keflavik Intl Manchester Dublin
Multiple Airlines Logo
7:55 am - 11:08 pmCFN  Donegal-DEN Denver Intl
22h 13m3 stops Dublin London Heathrow Vancouver Intl
$1,737Multiple Airlines
Sat, Sep 5 - Wed, Sep 16

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Aer Lingus flights from Colorado to Donegal

Our best Aer Lingus deals on Colorado to Donegal flight tickets
Aer Lingus
Sep 5
DEN2:09 pmDenver Intl
22h 51m
2 stops
CFN8:00 pmDonegal
Sep 16
CFN7:55 amDonegal
17h 20m
1 stop
DEN6:15 pmDenver Intl
$1,038
Aer Lingus
Sep 5
DEN2:09 pmDenver Intl
40h 51m
2 stops
CFN2:00 pmDonegal
Sep 16
CFN2:30 pmDonegal
16h 47m
2 stops
DEN12:17 amDenver Intl
$1,060

British Airways flights from Colorado to Donegal

Our best British Airways deals on Colorado to Donegal flight tickets
British Airways
Nov 12
DEN5:05 pmDenver Intl
19h 55m
2 stops
CFN8:00 pmDonegal
Nov 16
CFN2:30 pmDonegal
31h 40m
2 stops
DEN3:10 pmDenver Intl
$1,078
British Airways
Dec 2
DEN5:01 pmDenver Intl
19h 59m
2 stops
CFN8:00 pmDonegal
Dec 6
CFN2:30 pmDonegal
55h 40m
2 stops
DEN3:10 pmDenver Intl
$1,187

momondo Fare Finder

 
Customize your flight search to find flights from Colorado 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 832,500 searches. Data last updated August 10, 2026.
Use the filters below to find and compare flights from Colorado to Donegal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverDonegal

DEN Denver Intl - CFN Donegal

DENCFN

Denver Intl

Sat 9/5

2:09 pm-8:00 pm

2 stops22h 51m

Donegal

Wed 9/16

7:55 am-6:15 pm

1 stop17h 20m

$1,038
Quickest round-trip

DenverDonegal

DEN Denver Intl - CFN Donegal

DENCFN

Denver Intl

Sat 9/5

8:00 pm-8:00 pm

1 stop17h 00m

Donegal

Wed 9/16

7:55 am-6:15 pm

1 stop17h 20m

$1,052

DenverDonegal

DEN Denver Intl - CFN Donegal

DENCFN

Denver Intl

Sat 9/5

2:09 pm-2:00 pm

2 stops40h 51m

Donegal

Wed 9/16

2:30 pm-12:17 am

2 stops16h 47m

$1,060

DenverDonegal

DEN Denver Intl - CFN Donegal

DENCFN

Denver Intl

Thu 11/12

5:05 pm-8:00 pm

2 stops19h 55m

Donegal

Mon 11/16

2:30 pm-3:10 pm

2 stops31h 40m

$1,078

DenverDonegal

DEN Denver Intl - CFN Donegal

DENCFN

Denver Intl

Wed 12/2

5:01 pm-8:00 pm

2 stops19h 59m

Donegal

Sun 12/6

2:30 pm-3:10 pm

2 stops55h 40m

$1,187

DenverDonegal

DEN Denver Intl - CFN Donegal

DENCFN

Denver Intl

Thu 11/12

5:05 pm-8:00 pm

2 stops19h 55m

Donegal

Mon 11/16

2:30 pm-3:10 pm

2 stops31h 40m

$1,228

DenverDonegal

DEN Denver Intl - CFN Donegal

DENCFN

Denver Intl

Sat 9/5

8:10 pm-6:45 pm

2 stops15h 35m

Donegal

Wed 9/16

7:55 am-11:08 pm

3 stops22h 13m

$1,551

DenverDonegal

DEN Denver Intl - CFN Donegal

DENCFN

Denver Intl

Sat 9/5

4:40 pm-8:00 pm

3 stops20h 20m

Donegal

Wed 9/16

7:55 am-11:08 pm

3 stops22h 13m

$1,737

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Colorado to Donegal flight deals and tips

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

Fastest flight time

19h 59m

Direct flights

None
The fastest flight from Colorado to Donegal takes 19h 59m
There are no direct flights from Colorado to Donegal. There are no popular flight routes from Colorado to Donegal.
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Frequently asked questions about flying from Colorado to Donegal

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

    Prices for flights from Colorado to Donegal Airport are updated daily.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to Donegal Airport.

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

    The necessary travel and health documents for your Donegal Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Colorado to Donegal

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

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Colorado from Donegal. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

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

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Traveling to a place near Donegal?

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

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Colorado to Donegal. momondo saves you time and could save you money on your trip.

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

Flights from Colorado 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 Colorado to Donegal?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Donegal from Colorado.

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

Yes momondo offers price alerts on flights to Donegal from Colorado. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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