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Cheap flights from the United States to Donegal from €600

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Donegal departing on 18/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from the United States to Donegal

Recent return flight deals from the United States to Donegal

Enter your travel dates to find the best prices.
Aer Lingus Logo
15:50 - 14:00
JFK
-
CFN
18h 10m
2 stops
Aer Lingus Logo
14:30 - 20:25
CFN
-
JFK
9h 55m
1 stop
€600Aer Lingus
Wed, 18 Mar - Wed, 25 Mar
Multiple Airlines Logo
19:30 - 14:00
JFK
-
CFN
14h 30m
2 stops
Multiple Airlines Logo
14:30 - 15:05
CFN
-
JFK
28h 35m
2 stops
€622Multiple Airlines
Wed, 18 Mar - Wed, 25 Mar
Aer Lingus Logo
22:10 - 14:00
JFK
-
CFN
11h 50m
1 stop
Aer Lingus Logo
14:30 - 20:25
CFN
-
JFK
9h 55m
1 stop
€790Aer Lingus
Wed, 18 Mar - Wed, 25 Mar
Aer Lingus Logo
21:30 - 20:00
BWI
-
CFN
17h 30m
2 stops
Aer Lingus Logo
08:00 - 19:40
CFN
-
BWI
16h 40m
2 stops
€1,015Aer Lingus
Fri, 3 Apr - Fri, 10 Apr
Multiple Airlines Logo
13:55 - 20:00
DCA
-
CFN
25h 05m
2 stops
Multiple Airlines Logo
08:00 - 08:20
CFN
-
DCA
29h 20m
2 stops
€1,057Multiple Airlines
Fri, 3 Apr - Fri, 10 Apr

British Airways flights from United States to Donegal

Our best British Airways deals on United States to Donegal flight tickets
British Airways
24 Feb
JFK10:20New York John F Kennedy Intl
22h 40m
2 stops
CFN14:00Donegal
27 Feb
CFN14:30Donegal
31h 45m
2 stops
JFK17:15New York John F Kennedy Intl
€656
British Airways
24 Feb
JFK18:25New York John F Kennedy Intl
20h 35m
2 stops
CFN20:00Donegal
27 Feb
CFN14:30Donegal
31h 45m
2 stops
JFK17:15New York John F Kennedy Intl
€663
British Airways
23 Feb
IAD18:20Washington, D.C. Dulles Intl
14h 40m
2 stops
CFN14:00Donegal
27 Feb
CFN14:30Donegal
34h 25m
2 stops
IAD19:55Washington, D.C. Dulles Intl
€973

Aer Lingus flights from United States to Donegal

Our best Aer Lingus deals on United States to Donegal flight tickets
Aer Lingus
18 Mar
JFK15:50New York John F Kennedy Intl
18h 10m
2 stops
CFN14:00Donegal
25 Mar
CFN14:30Donegal
9h 55m
1 stop
JFK20:25New York John F Kennedy Intl
€600
Aer Lingus
23 Feb
IAD17:05Washington, D.C. Dulles Intl
21h 55m
1 stop
CFN20:00Donegal
27 Feb
CFN07:55Donegal
12h 40m
1 stop
IAD15:35Washington, D.C. Dulles Intl
€722
Aer Lingus
18 Mar
JFK22:10New York John F Kennedy Intl
11h 50m
1 stop
CFN14:00Donegal
25 Mar
CFN14:30Donegal
9h 55m
1 stop
JFK20:25New York John F Kennedy Intl
€790

momondo Fare Finder

 
Customise your flight search to find flights from United States 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 February 2026.
Use the filters below to find and compare flights from the United States to Donegal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

New YorkDonegal

JFK - CFN

JFKCFN

New York John F Kennedy Intl

Wed 18/3

15:50-14:00

2 stops18h 10m

Donegal

Wed 25/3

14:30-20:25

1 stop9h 55m

€600

New YorkDonegal

JFK - CFN

JFKCFN

New York John F Kennedy Intl

Wed 18/3

19:30-14:00

2 stops14h 30m

Donegal

Wed 25/3

14:30-15:05

2 stops28h 35m

€622

New YorkDonegal

JFK - CFN

JFKCFN

New York John F Kennedy Intl

Wed 18/3

22:10-14:00

1 stop11h 50m

Donegal

Wed 25/3

14:30-20:25

1 stop9h 55m

€790

BaltimoreDonegal

BWI - CFN

BWICFN

Baltimore/Washington

Fri 3/4

21:30-20:00

2 stops17h 30m

Donegal

Fri 10/4

08:00-19:40

2 stops16h 40m

€1,015

Washington, D.C.Donegal

DCA - CFN

DCACFN

Washington, D.C. Reagan-National

Fri 3/4

13:55-20:00

2 stops25h 05m

Donegal

Fri 10/4

08:00-08:20

2 stops29h 20m

€1,057

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to Donegal from

How to get the cheapest flight ticket from United States to Donegal

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

How long does it take to fly to Donegal?

The average flight duration from United States to Donegal depends on which airport you fly into and out of. Flying from New York to Knock is 9h 35m on average, while flying from San Francisco to Knock is 17h 49m on average. Knock is the most popular airport in Donegal.

Cheap United States to Donegal flight deals and tips

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

Fastest flight time

14h 40m

Direct flights

None
The fastest flight from United States to Donegal takes 14h 40m
There are no direct flights from United States to Donegal. There are no popular flight routes from United States to Donegal.
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  • When did momondo last update prices for flights from United States to Donegal Airport?

    Prices for flights from United States to Donegal Airport refresh daily.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United States 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.

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 United States to Donegal?

Finding the right flight to Donegal from United States is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that 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 from United States to Donegal with flexible booking policies on momondo?

Yes. All flights to Donegal from United States on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from United States 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 United States.

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

Yes momondo offers price alerts on flights to Donegal from United States. 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.

An easier way to manage your Donegal trip

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