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Cheap flights from Chicago to Donegal from €680

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Donegal departing on 3/12. 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
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Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
17:10 - 14:00ORD-CFN
14h 50m2 stops
British Airways Logo
13:00 - 18:45CFN-ORD
35h 45m2 stops
€680British Airways
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Wed, 3 Dec - Sun, 7 Dec
Multiple Airlines Logo
20:40 - 14:00ORD-CFN
12h 20m1 stop
Multiple Airlines Logo
07:55 - 11:05CFN-ORD
32h 10m2 stops
€1,011Multiple Airlines
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Mon, 27 Oct - Thu, 30 Oct
Multiple Airlines Logo
22:45 - 14:00ORD-CFN
34h 15m2 stops
Multiple Airlines Logo
07:55 - 21:00CFN-ORD
42h 05m3 stops
€1,177Multiple Airlines
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Mon, 27 Oct - Thu, 30 Oct
Multiple Airlines Logo
20:40 - 14:00ORD-CFN
12h 20m1 stop
Multiple Airlines Logo
07:55 - 21:00CFN-ORD
42h 05m3 stops
€1,202Multiple Airlines
Find Deal
Mon, 27 Oct - Thu, 30 Oct
Aer Lingus Logo
20:40 - 14:00ORD-CFN
12h 20m1 stop
Aer Lingus Logo
14:30 - 15:00CFN-ORD
29h 30m1 stop
€1,671Aer Lingus
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Mon, 27 Oct - Thu, 30 Oct

momondo Fare Finder

 
Customise your flight search to find flights from Chicago 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 16 October 2025.
Use the filters below to find and compare flights from Chicago to Donegal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoDonegal

ORD - CFN

ORDCFN

Chicago O'Hare Intl

Wed 3/12

17:10-14:00

2 stops14h 50m

Donegal

Sun 7/12

13:00-18:45

2 stops35h 45m

€680

ChicagoDonegal

ORD - CFN

ORDCFN

Chicago O'Hare Intl

Mon 27/10

20:40-14:00

1 stop12h 20m

Donegal

Thu 30/10

07:55-11:05

2 stops32h 10m

€1,011

ChicagoDonegal

ORD - CFN

ORDCFN

Chicago O'Hare Intl

Mon 27/10

22:45-14:00

2 stops34h 15m

Donegal

Thu 30/10

07:55-21:00

3 stops42h 05m

€1,177

ChicagoDonegal

ORD - CFN

ORDCFN

Chicago O'Hare Intl

Mon 27/10

20:40-14:00

1 stop12h 20m

Donegal

Thu 30/10

07:55-21:00

3 stops42h 05m

€1,202

ChicagoDonegal

ORD - CFN

ORDCFN

Chicago O'Hare Intl

Mon 27/10

20:40-14:00

1 stop12h 20m

Donegal

Thu 30/10

14:30-15:00

1 stop29h 30m

€1,671

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Chicago to Donegal

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Donegal according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Chicago to Donegal (CHI to CFN) flight deals and tips

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

Direct flights

None
There are no direct flights from Chicago to Donegal. There are no popular flight routes from Chicago to Donegal.
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  • How far is Chicago to Donegal by plane?

    There are 5719.8 km between Chicago and Donegal. By plane, this route typically takes 12h 20m.

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

    Prices for flights from Chicago to Donegal Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Chicago 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 stopovers. It is recommended that you verify with the airline you are booking with for travel from Chicago 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.

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

    Search flight deals from Chicago to Donegal. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Chicago 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?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Travelling to a place near Donegal?

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

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Chicago to Donegal . Millions of users trust and use momondo every year so you are in good hands.

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

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

How can momondo help me find flights from Chicago to Donegal?

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

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

Price alerts on flights to Donegal from Chicago 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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