In terms of precipitation, rainfall in Donegal ranges from 2.3 - 4.6 inches per month. October is typically the wettest month, when rainfall can reach 4.6 in. April is typically the driest time to visit Donegal when rainfall is around 2.3 in.

If weather is an important factor for your trip to Donegal, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 57.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

What is the cheapest time of day to fly from CO to CFN?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to Donegal as you normally would.

What airport do you fly into for flights to Donegal from Colorado?

For a flight from Colorado to Donegal, you will be flying into Donegal. Donegal (CFN) is just 28.5 mi from the center of the city.

Can I find deals for flights from Colorado to Donegal that include hotel bookings?

Yes. In addition to deals on Colorado to Donegal flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Colorado to Donegal?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to Donegal.

Can I find deals for business class flights from Colorado to Donegal?

Yes. Cheapflights offers flight deals from Colorado to Donegal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$881+ Flights from Colorado to Donegal

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Cheap flight deals from Colorado to Donegal

Round-trip from	$881 (Gurufare)

From Colorado to Donegal

Search Deals

Find flight deals from Colorado to Donegal

Cheapest flights from Colorado to Donegal
Explore the most affordable flight options available from Colorado to Donegal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 1, 2025.

lun. 7/287:55 pmDEN - CFN

1 stop17h 05mAer Lingus

sáb. 8/97:55 amCFN - DEN

1 stop17h 04mAer Lingus

Deal found 6/29

$881

lun. 7/286:35 pmDEN - CFN

2 stops18h 25mBritish Airways

sáb. 8/92:30 pmCFN - DEN

2 stops56h 55mBritish Airways

Deal found 6/30

$932

Best flights from Colorado to Donegal
Discover carefully curated flight deals from Colorado to Donegal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julio 1, 2025.

lun. 7/287:55 pmDEN - CFN

1 stop17h 05mAer Lingus

sáb. 8/97:55 amCFN - DEN

1 stop17h 04mAer Lingus

Deal found 6/29

$881

lun. 7/286:35 pmDEN - CFN

2 stops18h 25mBritish Airways

sáb. 8/92:30 pmCFN - DEN

2 stops56h 55mBritish Airways

Deal found 6/30

$932

Last-minute flights from Colorado to Donegal
Discover last-minute flight deals from Colorado to Donegal. Data last updated julio 1, 2025 and is based on user searches.

lun. 7/287:55 pmDEN - CFN

1 stop17h 05mAer Lingus

sáb. 8/97:55 amCFN - DEN

1 stop17h 04mAer Lingus

Deal found 6/29

$881

lun. 7/286:35 pmDEN - CFN

2 stops18h 25mBritish Airways

sáb. 8/92:30 pmCFN - DEN

2 stops56h 55mBritish Airways

Deal found 6/30

$932

Cheapflights Fare Finder

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

DenverDonegal

DEN - CFN

DENCFN

Denver Intl

lun. 7/28

7:55 pm-8:00 pm

1 stop17h 05m

Donegal

sáb. 8/9

7:55 am-5:59 pm

1 stop17h 04m

$881

DenverDonegal

DEN - CFN

DENCFN

Denver Intl

lun. 7/28

6:35 pm-8:00 pm

2 stops18h 25m

Donegal

sáb. 8/9

2:30 pm-4:25 pm

2 stops56h 55m

$932

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Best time to book a flight from Colorado to Donegal

Have a flexible travel schedule? Discover the best time to fly to Donegal from Colorado with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Colorado to Donegal

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Donegal

Read through reviews of airlines operating flights from Colorado to Donegal, such as Aer Lingus and British Airways. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Aer Lingus

7.1

Good

1,140 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

SEA - DUB

Most airlines board by group even though passengers are seated at the back. At Seatac, passengers were seated starting at the back. Otherwise, flight was good.

Aer Lingus

7.1

Good

1,140 reviews

Aer Lingus

7.1

Good

1,140 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

SEA - DUB

Most airlines board by group even though passengers are seated at the back. At Seatac, passengers were seated starting at the back. Otherwise, flight was good.

British Airways

6.6

Okay

7,086 reviews

Aer Lingus

7.1

Good

1,140 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

SEA - DUB

Most airlines board by group even though passengers are seated at the back. At Seatac, passengers were seated starting at the back. Otherwise, flight was good.

Related info for your journey

What airport do you fly into for flights to Donegal from Colorado?
For a flight from Colorado to Donegal, you will be flying into Donegal. Donegal (CFN) is just 28.5 mi from the center of the city.
Can I find deals for flights from Colorado to Donegal that include hotel bookings?
Yes. In addition to deals on Colorado to Donegal flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Colorado to Donegal?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to Donegal.
Can I find deals for business class flights from Colorado to Donegal?
Yes. Cheapflights offers flight deals from Colorado to Donegal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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$881+ Cheap flights from Colorado to Donegal (CFN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/28. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Colorado to Donegal with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Colorado to Donegal

Keep the following information in mind while searching for Colorado to Donegal flight deals. Data was last updated julio 1, 2025.

Round-trip from

Find flight deals from Colorado to Donegal

Cheapest flights from Colorado to DonegalExplore the most affordable flight options available from Colorado to Donegal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 1, 2025.

Explore the most affordable flight options available from Colorado to Donegal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Colorado to Donegal that are best for you.

Best time to book a flight from Colorado to Donegal

Have a flexible travel schedule? Discover the best time to fly to Donegal from Colorado with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Colorado to Donegal

Reviews of airlines servicing Donegal

Read through reviews of airlines operating flights from Colorado to Donegal, such as Aer Lingus and British Airways. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Colorado to Donegal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Donegal from Colorado?

Can I find deals for flights from Colorado to Donegal that include hotel bookings?

How can I find direct flights from Colorado to Donegal?

Can I find deals for business class flights from Colorado to Donegal?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Colorado to Donegal

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Colorado to Donegal
Explore the most affordable flight options available from Colorado to Donegal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 1, 2025.