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Cheap flights from the United States to Donegal from $690

This is the cheapest one-way 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 9/17. 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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0 bags

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Find the cheapest flights from the United States to Donegal

Recent round-trip flight deals from the United States to Donegal

British Airways Logo
9:45 pm - 2:00 pmORD-CFN
34h 15m2 stops
British Airways Logo
1:00 pm - 3:25 pmCFN-ORD
32h 25m2 stops
$834British Airways
Find Deal
Wed, Dec 3 - Sun, Dec 7
British Airways Logo
8:40 pm - 2:00 pmSFO-CFN
33h 20m2 stops
British Airways Logo
7:55 am - 3:00 pmCFN-SFO
39h 05m2 stops
$1,224British Airways
Find Deal
Sat, Feb 21 - Wed, Feb 25
British Airways Logo
7:20 pm - 8:00 pmSFO-CFN
40h 40m2 stops
British Airways Logo
7:55 am - 5:25 pmCFN-SFO
17h 30m2 stops
$1,275British Airways
Find Deal
Tue, Sep 16 - Fri, Sep 19
British Airways Logo
4:55 pm - 8:00 pmORD-CFN
21h 05m2 stops
British Airways Logo
7:55 am - 5:00 pmCFN-ORD
15h 05m2 stops
$2,316British Airways
Find Deal
Wed, Sep 17 - Sat, Sep 20

British Airways flights from United States to Donegal

Our best British Airways deals on United States to Donegal flight tickets
British Airways
Dec 3
ORD9:45 pmChicago O'Hare Intl
34h 15m
2 stops
CFN2:00 pmDonegal
Dec 7
CFN1:00 pmDonegal
32h 25m
2 stops
ORD3:25 pmChicago O'Hare Intl
$834
Find similar
British Airways
Feb 21
SFO8:40 pmSan Francisco
33h 20m
2 stops
CFN2:00 pmDonegal
Feb 25
CFN7:55 amDonegal
39h 05m
2 stops
SFO3:00 pmSan Francisco
$1,224
Find similar
British Airways
Sep 16
SFO7:20 pmSan Francisco
40h 40m
2 stops
CFN8:00 pmDonegal
Sep 19
CFN7:55 amDonegal
17h 30m
2 stops
SFO5:25 pmSan Francisco
$1,275
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated September 4, 2025.
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

ChicagoDonegal

ORD - CFN

ORDCFN

Chicago O'Hare Intl

Wed 12/3

9:45 pm-2:00 pm

2 stops34h 15m

Donegal

Sun 12/7

1:00 pm-3:25 pm

2 stops32h 25m

$834

San FranciscoDonegal

SFO - CFN

SFOCFN

San Francisco

Sat 2/21

8:40 pm-2:00 pm

2 stops33h 20m

Donegal

Wed 2/25

7:55 am-3:00 pm

2 stops39h 05m

$1,224

San FranciscoDonegal

SFO - CFN

SFOCFN

San Francisco

Tue 9/16

7:20 pm-8:00 pm

2 stops40h 40m

Donegal

Fri 9/19

7:55 am-5:25 pm

2 stops17h 30m

$1,275

ChicagoDonegal

ORD - CFN

ORDCFN

Chicago O'Hare Intl

Wed 9/17

4:55 pm-8:00 pm

2 stops21h 05m

Donegal

Sat 9/20

7:55 am-5:00 pm

2 stops15h 05m

$2,316

ChicagoDonegal

ORD - CFN

ORDCFN

Chicago O'Hare Intl

Wed 9/17

4:55 pm-8:00 pm

2 stops21h 05m

$690

Flights are sorted by cheapest round-trip 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

What is the cheapest day to depart on your flight to Donegal?

The cheapest day to depart on your flight to Donegal is on a Saturday when prices can be found for as low as $563. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to Donegal on Wednesday is $1,027.

What is the cheapest time of day to depart on your flight to Donegal?

Flying to Donegal from United States in the evening is the least expensive time of day to depart. momondo users have found prices as low as $786 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,027 on average. Flights to Donegal from United States in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Can stopping save me money on United States to Donegal flights?

You could potentially save up to 24% on your flight if you consider stops on a United States to Donegal flight.

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

Direct flights

None
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 are updated daily.

  • How many operators does momondo search for flights from United States to Donegal Airport?

  • How old do you have to be to fly from United States 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 from United States 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.

Best airlines flying from United States to Donegal

Compare and see reviews for airlines that fly from United States to Donegal with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom $649Free CancellationRating
7.2
1,252 reviews
Search Aer Lingus flights

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 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?

momondo does allow users to show only those flights to Donegal from United States which offer a flexible booking policy as well as other useful filters and features.

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?

Price alerts on flights to Donegal from United States are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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