Latest deals
Insights
When to book
FAQs
Price Alerts
Flights to Donegal

$549 Cheap flights to Donegal

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight to Donegal departing on 2/18. 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
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from the United States to Donegal

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
5:25 pm - 8:00 pm
DEN
-
CFN
19h 35m
2 stops
British Airways Logo
1:00 pm - 3:30 pm
CFN
-
DEN
57h 30m
2 stops
$549British Airways
Wed, Feb 18 - Sun, Feb 22
British Airways Logo
5:25 pm - 8:00 pm
DEN
-
CFN
19h 35m
2 stops
British Airways Logo
1:00 pm - 3:30 pm
CFN
-
DEN
57h 30m
2 stops
$550British Airways
Wed, Feb 18 - Sun, Feb 22
British Airways Logo
9:45 pm - 8:00 pm
IAD
-
CFN
17h 15m
2 stops
British Airways Logo
7:55 am - 7:55 pm
CFN
-
IAD
17h 00m
2 stops
$729British Airways
Tue, Feb 3 - Sat, Feb 14
British Airways Logo
8:35 pm - 8:00 pm
BWI
-
CFN
18h 25m
2 stops
British Airways Logo
7:55 am - 6:45 pm
CFN
-
BWI
15h 50m
2 stops
$729British Airways
Tue, Feb 3 - Sat, Feb 14
Aer Lingus Logo
5:05 pm - 2:00 pm
IAD
-
CFN
15h 55m
1 stop
Aer Lingus Logo
2:30 pm - 3:35 pm
CFN
-
IAD
30h 05m
1 stop
$778Aer Lingus
Tue, Feb 3 - Sat, Feb 14
Multiple Airlines Logo
5:30 pm - 8:00 pm
IAD
-
CFN
21h 30m
3 stops
Multiple Airlines Logo
7:55 am - 9:00 pm
CFN
-
IAD
42h 05m
3 stops
$823Multiple Airlines
Tue, Feb 3 - Sat, Feb 14
Multiple Airlines Logo
6:20 pm - 8:00 pm
IAD
-
CFN
20h 40m
2 stops
Multiple Airlines Logo
7:55 am - 3:35 pm
CFN
-
IAD
12h 40m
1 stop
$897Multiple Airlines
Tue, Feb 3 - Sat, Feb 14
Multiple Airlines Logo
4:30 pm - 8:00 pm
IAD
-
CFN
22h 30m
2 stops
Multiple Airlines Logo
7:55 am - 9:00 pm
CFN
-
IAD
42h 05m
3 stops
$980Multiple Airlines
Tue, Feb 3 - Sat, Feb 14
Multiple Airlines Logo
5:20 pm - 2:00 pm
DCA
-
CFN
15h 40m
2 stops
Multiple Airlines Logo
7:55 am - 9:20 pm
CFN
-
DCA
18h 25m
2 stops
$1,085Multiple Airlines
Tue, Feb 3 - Sat, Feb 14
Multiple Airlines Logo
9:45 pm - 6:45 pm
IAD
-
CFN
40h 00m
2 stops
Multiple Airlines Logo
10:40 am - 3:35 pm
CFN
-
IAD
33h 55m
2 stops
$3,030Multiple Airlines
Fri, Feb 27 - Fri, Mar 6

momondo Fare Finder

 
Locate flights to Donegal that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 832,500 searches and data was last updated on January 14, 2026.
Use the filters below to find and compare flights to Donegal that are best for you.

Fly from

Route

Depart

Return

Price

DenverDonegal

DEN - CFN

DENCFN

Denver Intl

Wed 2/18

5:25 pm-8:00 pm

2 stops19h 35m

Donegal

Sun 2/22

1:00 pm-3:30 pm

2 stops57h 30m

$549

DenverDonegal

DEN - CFN

DENCFN

Denver Intl

Wed 2/18

5:25 pm-8:00 pm

2 stops19h 35m

Donegal

Sun 2/22

1:00 pm-3:30 pm

2 stops57h 30m

$550

Washington, D.C.Donegal

IAD - CFN

IADCFN

Washington, D.C. Dulles Intl

Tue 2/3

9:45 pm-8:00 pm

2 stops17h 15m

Donegal

Sat 2/14

7:55 am-7:55 pm

2 stops17h 00m

$729

BaltimoreDonegal

BWI - CFN

BWICFN

Baltimore/Washington

Tue 2/3

8:35 pm-8:00 pm

2 stops18h 25m

Donegal

Sat 2/14

7:55 am-6:45 pm

2 stops15h 50m

$729

Washington, D.C.Donegal

IAD - CFN

IADCFN

Washington, D.C. Dulles Intl

Tue 2/3

5:05 pm-2:00 pm

1 stop15h 55m

Donegal

Sat 2/14

2:30 pm-3:35 pm

1 stop30h 05m

$778

Washington, D.C.Donegal

IAD - CFN

IADCFN

Washington, D.C. Dulles Intl

Tue 2/3

5:30 pm-8:00 pm

3 stops21h 30m

Donegal

Sat 2/14

7:55 am-9:00 pm

3 stops42h 05m

$823

Washington, D.C.Donegal

IAD - CFN

IADCFN

Washington, D.C. Dulles Intl

Tue 2/3

6:20 pm-8:00 pm

2 stops20h 40m

Donegal

Sat 2/14

7:55 am-3:35 pm

1 stop12h 40m

$897

Washington, D.C.Donegal

IAD - CFN

IADCFN

Washington, D.C. Dulles Intl

Tue 2/3

4:30 pm-8:00 pm

2 stops22h 30m

Donegal

Sat 2/14

7:55 am-9:00 pm

3 stops42h 05m

$980

Washington, D.C.Donegal

DCA - CFN

DCACFN

Washington, D.C. Reagan-National

Tue 2/3

5:20 pm-2:00 pm

2 stops15h 40m

Donegal

Sat 2/14

7:55 am-9:20 pm

2 stops18h 25m

$1,085

Washington, D.C.Donegal

IAD - CFN

IADCFN

Washington, D.C. Dulles Intl

Fri 2/27

9:45 pm-6:45 pm

2 stops40h 00m

Donegal

Fri 3/6

10:40 am-3:35 pm

2 stops33h 55m

$3,030

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Donegal from

Donegal flights insights and trends

Explore insights for your Donegal flight to craft the best travel plan

How long does it take to fly to Donegal?

Flight times vary depending on what airport in United States you fly out of and what airport in Donegal you fly into. For example, flying from New York to Knock takes 9h 35m on average. On the other hand, flying from San Francisco to Knock takes 34h 55m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

Cheap Donegal flight deals and tips

Summary info about Donegal flight prices, duration and airlines

Best Round-Trip Price

$549

Fastest flight time

15h 40m
The best round-trip flight price to Donegal from United States in the last 72 hours is $549 (Denver Intl to Donegal).
Search Deals
The fastest flight to Donegal from United States takes 15h 40m (Washington, D.C. Reagan-National to Donegal).
Search Deals

Frequently asked questions about flying to Donegal

Is there an alternative airport near Donegal?

Those flying to Donegal could potentially find better pricing at Donegal Airport (28 mi from Donegal city center) or Galway Airport (99 mi from Donegal city center) depending on the month and departure airport.

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

Prices for flights to Donegal Airport are updated daily.

How many operators does momondo search for flights to Donegal Airport?

As of January 2026, there is 1 operator available to choose from for flights to Donegal Airport.

How old do you have to be to fly to Donegal Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel to Donegal Airport.

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

The travel and health documents you'll need for your trip to Donegal Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Donegal Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Donegal?

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

Why use momondo?

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

Finding the right flight to Donegal is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. These options can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Donegal quick and easy, saving you time and money.

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

All flight searches to Donegal on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights to Donegal?

momondo provides multiple filters to help you find the best flight to Donegal. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to Donegal, momondo offers a useful price alert feature which will track prices for flights to Donegal and alert you when they change.

An easier way to manage your Donegal trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 2/13
Fri 2/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Donegal

Popular flights to Donegal

Popular routes according to searches in the past day on momondo
New York to Donegal Flightsfrom $592
Washington, D.C. to Donegal Flightsfrom $729
Chicago to Donegal Flightsfrom $833
San Francisco to Donegal Flightsfrom $1,013