How does KAYAK find such low prices on flights from Illinois to Donegal?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Donegal. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Donegal?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Donegal from Illinois is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Illinois to Donegal?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Donegal with an airline and back to Illinois with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Donegal?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Donegal from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

€620 CHEAP FLIGHTS from Illinois to Donegal

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In the last 7 days, travellers have searched 41,299,237 times on KAYAK, and here's why:

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Cheapest flight	€620

Flight from Chicago to Donegal

How does KAYAK find such low prices on flights from Illinois to Donegal?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Donegal.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Donegal?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Donegal from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to Donegal?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Donegal with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Donegal?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Donegal from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Direct departures

Illinois to Donegal

Monday

Aer Lingus, British Airways, Qatar Airways

Aer Lingus, British Airways, +1 more

Tuesday

Aer Lingus, British Airways, Qatar Airways

Aer Lingus, British Airways, +1 more

Wednesday

Aer Lingus, British Airways, Qatar Airways

Aer Lingus, British Airways, +1 more

Thursday

Aer Lingus, British Airways, Qatar Airways

Aer Lingus, British Airways, +1 more

Friday

Aer Lingus, British Airways, Loganair, +1 more

Aer Lingus, British Airways, +2 more

Saturday

Aer Lingus, British Airways, Qatar Airways

Aer Lingus, British Airways, +1 more

Sunday

Aer Lingus, British Airways, Loganair, +1 more

Aer Lingus, British Airways, +2 more

See more direct flights

Direct returns

Donegal to Illinois

Monday

Aer Lingus, British Airways, Qatar Airways

Aer Lingus, British Airways, +1 more

Tuesday

Aer Lingus, British Airways, Qatar Airways

Aer Lingus, British Airways, +1 more

Wednesday

Aer Lingus, British Airways, Qatar Airways

Aer Lingus, British Airways, +1 more

Thursday

Aer Lingus, British Airways, Qatar Airways

Aer Lingus, British Airways, +1 more

Friday

Aer Lingus, British Airways, Loganair, +1 more

Aer Lingus, British Airways, +2 more

Saturday

Aer Lingus, British Airways, Qatar Airways

Aer Lingus, British Airways, +1 more

Sunday

Aer Lingus, British Airways, Loganair, +1 more

Aer Lingus, British Airways, +2 more

See more direct flights

Book cheap flights from Illinois to Donegal

Recent return flight deals

1/2Sat

2 stops

19h 30mORD-CFN

8/2Sat

2 stops

15h 25mCFN-ORD

€620

1/2Sat

2 stopsAer Lingus

16h 15mORD-CFN

8/2Sat

1 stopAer Lingus

17h 20mCFN-ORD

€789

1/2Sat

2 stopsAer Lingus

16h 15mORD-CFN

8/2Sat

1 stopAer Lingus

17h 20mCFN-ORD

€798

13/1Mon

2 stops

16h 15mORD-CFN

19/1Sun

2 stops

16h 04mCFN-ORD

€838

13/1Mon

2 stopsAer Lingus

21h 00mORD-CFN

19/1Sun

1 stopAer Lingus

12h 00mCFN-ORD

€857

1/2Sat

1 stopAer Lingus

9h 50mORD-CFN

8/2Sat

1 stopAer Lingus

17h 20mCFN-ORD

€867

1/2Sat

2 stopsBritish Airways

19h 25mORD-CFN

8/2Sat

2 stopsBritish Airways

30h 40mCFN-ORD

€877

13/1Mon

3 stops

18h 25mORD-CFN

19/1Sun

2 stops

16h 04mCFN-ORD

€900

1/2Sat

3 stops

19h 30mORD-CFN

8/2Sat

3 stops

39h 25mCFN-ORD

€1,012

1/2Sat

2 stopsBritish Airways

16h 15mORD-CFN

8/2Sat

3 stopsBritish Airways

30h 16mCFN-ORD

€2,372

Recent one-way flight deals

26/5Mon

1 stopAer Lingus

11h 05mORD-CFN

€800

Everything you need to know for your flight to Donegal

Information on the airport you'll fly into in Donegal

Donegal (CFN)

€620 Find Cheap Flights from Illinois to Donegal

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight to Donegal departing on 1/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.

Search hundreds of travel sites at once for deals on flights to Donegal

Good to know

Cheapest flight

FAQs for booking flights from Illinois to Donegal

How does KAYAK find such low prices on flights from Illinois to Donegal?

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Donegal?

What is the Hacker Fare option on flights from Illinois to Donegal?

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Donegal?

Prefer to fly direct from Illinois to Donegal?

Book cheap flights from Illinois to Donegal

Recent return flight deals

Search by stops

Search by airline

Search by price

Recent one-way flight deals

Search by stops

Search by airline

Search by price

Everything you need to know for your flight to Donegal

Information on the airport you'll fly into in Donegal

Cabin class types available on flights to Illinois

Cabin classes available on flights to Donegal. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Complete your trip to Donegal with a hotel stay or car hire

Flights to other popular destinations

The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.

Flights from domestic origins to Donegal

Flights from all regions of Illinois to Donegal. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Choose which airport to fly into in Donegal