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Cheap flights from Illinois to Donegal from $966

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Donegal departing on 9/1. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Illinois to Donegal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Aer Lingus Logo
9:00 pm - 2:00 pmORD  Chicago O'Hare Intl-CFN Donegal
11h 00m1 stop Dublin
Aer Lingus Logo
2:30 pm - 7:15 pmCFN  Donegal-ORD Chicago O'Hare Intl
10h 45m1 stop Dublin
$966Aer Lingus
Tue, Sep 1 - Wed, Sep 9
Aer Lingus Logo
9:00 pm - 2:00 pmORD  Chicago O'Hare Intl-CFN Donegal
11h 00m1 stop Dublin
Aer Lingus Logo
7:55 am - 7:15 pmCFN  Donegal-ORD Chicago O'Hare Intl
17h 20m1 stop Dublin
$979Aer Lingus
Mon, Sep 28 - Mon, Oct 5
Aer Lingus Logo
6:40 am - 2:00 pmORD  Chicago O'Hare Intl-CFN Donegal
25h 20m2 stops Cleveland Hopkins Intl Dublin
Aer Lingus Logo
7:55 am - 2:00 pmCFN  Donegal-ORD Chicago O'Hare Intl
12h 05m1 stop Dublin
$992Aer Lingus
Tue, Sep 1 - Wed, Sep 9
Multiple Airlines Logo
9:00 pm - 2:00 pmORD  Chicago O'Hare Intl-CFN Donegal
11h 00m1 stop Dublin
Multiple Airlines Logo
2:30 pm - 7:15 pmCFN  Donegal-ORD Chicago O'Hare Intl
10h 45m1 stop Dublin
$1,003Multiple Airlines
Wed, Sep 2 - Wed, Sep 9
Multiple Airlines Logo
6:30 pm - 2:00 pmORD  Chicago O'Hare Intl-CFN Donegal
13h 30m2 stops New York John F Kennedy Intl Dublin
Multiple Airlines Logo
2:30 pm - 7:15 pmCFN  Donegal-ORD Chicago O'Hare Intl
10h 45m1 stop Dublin
$1,011Multiple Airlines
Tue, Sep 1 - Tue, Sep 8
British Airways Logo
6:50 pm - 8:00 pmORD  Chicago O'Hare Intl-CFN Donegal
19h 10m2 stops London Heathrow Dublin
British Airways Logo
8:00 am - 6:45 pmCFN  Donegal-ORD Chicago O'Hare Intl
16h 45m2 stops Dublin London Heathrow
$1,029British Airways
Sun, Dec 6 - Thu, Dec 10
Aer Lingus Logo
3:45 pm - 2:00 pmORD  Chicago O'Hare Intl-CFN Donegal
16h 15m1 stop Dublin
Aer Lingus Logo
2:30 pm - 7:15 pmCFN  Donegal-ORD Chicago O'Hare Intl
10h 45m1 stop Dublin
$1,031Aer Lingus
Tue, Sep 1 - Fri, Sep 11
Multiple Airlines Logo
10:25 pm - 2:00 pmORD  Chicago O'Hare Intl-CFN Donegal
33h 35m2 stops London Heathrow Dublin
Multiple Airlines Logo
2:30 pm - 12:30 pmCFN  Donegal-ORD Chicago O'Hare Intl
28h 00m2 stops Dublin London Heathrow
$1,039Multiple Airlines
Mon, Sep 28 - Mon, Oct 5
Aer Lingus Logo
9:00 pm - 2:00 pmORD  Chicago O'Hare Intl-CFN Donegal
11h 00m1 stop Dublin
Aer Lingus Logo
2:30 pm - 7:15 pmCFN  Donegal-ORD Chicago O'Hare Intl
10h 45m1 stop Dublin
$1,041Aer Lingus
Mon, Aug 31 - Wed, Sep 9
Multiple Airlines Logo
9:00 pm - 2:00 pmORD  Chicago O'Hare Intl-CFN Donegal
11h 00m1 stop Dublin
Multiple Airlines Logo
2:30 pm - 12:30 pmCFN  Donegal-ORD Chicago O'Hare Intl
28h 00m2 stops Dublin London Heathrow
$1,046Multiple Airlines
Mon, Sep 28 - Mon, Oct 5

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Aer Lingus flights from Illinois to Donegal

Our best Aer Lingus deals on Illinois to Donegal flight tickets
Aer Lingus
Sep 1
ORD9:00 pmChicago O'Hare Intl
11h 00m
1 stop
CFN2:00 pmDonegal
Sep 9
CFN2:30 pmDonegal
10h 45m
1 stop
ORD7:15 pmChicago O'Hare Intl
$966
Aer Lingus
Sep 28
ORD9:00 pmChicago O'Hare Intl
11h 00m
1 stop
CFN2:00 pmDonegal
Oct 5
CFN7:55 amDonegal
17h 20m
1 stop
ORD7:15 pmChicago O'Hare Intl
$979
Aer Lingus
Sep 1
ORD6:40 amChicago O'Hare Intl
25h 20m
2 stops
CFN2:00 pmDonegal
Sep 9
CFN7:55 amDonegal
12h 05m
1 stop
ORD2:00 pmChicago O'Hare Intl
$992

British Airways flights from Illinois to Donegal

Our best British Airways deals on Illinois to Donegal flight tickets
British Airways
Dec 6
ORD6:50 pmChicago O'Hare Intl
19h 10m
2 stops
CFN8:00 pmDonegal
Dec 10
CFN8:00 amDonegal
16h 45m
2 stops
ORD6:45 pmChicago O'Hare Intl
$1,029
British Airways
Sep 1
ORD7:05 pmChicago O'Hare Intl
36h 55m
2 stops
CFN2:00 pmDonegal
Sep 9
CFN2:30 pmDonegal
27h 55m
2 stops
ORD12:25 pmChicago O'Hare Intl
$1,294
British Airways
Aug 30
ORD10:30 pmChicago O'Hare Intl
33h 30m
2 stops
CFN2:00 pmDonegal
Sep 7
CFN2:30 pmDonegal
29h 20m
2 stops
ORD1:50 pmChicago O'Hare Intl
$1,313

momondo Fare Finder

 
Customize your flight search to find flights from Illinois 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 August 17, 2026.
Use the filters below to find and compare flights from Illinois to Donegal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

ChicagoDonegal

ORD Chicago O'Hare Intl - CFN Donegal

ORDCFN

Chicago O'Hare Intl

Tue 9/1

9:00 pm-2:00 pm

1 stop11h 00m

Donegal

Wed 9/9

2:30 pm-7:15 pm

1 stop10h 45m

$966

ChicagoDonegal

ORD Chicago O'Hare Intl - CFN Donegal

ORDCFN

Chicago O'Hare Intl

Mon 9/28

9:00 pm-2:00 pm

1 stop11h 00m

Donegal

Mon 10/5

7:55 am-7:15 pm

1 stop17h 20m

$979

ChicagoDonegal

ORD Chicago O'Hare Intl - CFN Donegal

ORDCFN

Chicago O'Hare Intl

Tue 9/1

6:40 am-2:00 pm

2 stops25h 20m

Donegal

Wed 9/9

7:55 am-2:00 pm

1 stop12h 05m

$992

ChicagoDonegal

ORD Chicago O'Hare Intl - CFN Donegal

ORDCFN

Chicago O'Hare Intl

Wed 9/2

9:00 pm-2:00 pm

1 stop11h 00m

Donegal

Wed 9/9

2:30 pm-7:15 pm

1 stop10h 45m

$1,003

ChicagoDonegal

ORD Chicago O'Hare Intl - CFN Donegal

ORDCFN

Chicago O'Hare Intl

Tue 9/1

6:30 pm-2:00 pm

2 stops13h 30m

Donegal

Tue 9/8

2:30 pm-7:15 pm

1 stop10h 45m

$1,011

ChicagoDonegal

ORD Chicago O'Hare Intl - CFN Donegal

ORDCFN

Chicago O'Hare Intl

Sun 12/6

6:50 pm-8:00 pm

2 stops19h 10m

Donegal

Thu 12/10

8:00 am-6:45 pm

2 stops16h 45m

$1,029

ChicagoDonegal

ORD Chicago O'Hare Intl - CFN Donegal

ORDCFN

Chicago O'Hare Intl

Tue 9/1

3:45 pm-2:00 pm

1 stop16h 15m

Donegal

Fri 9/11

2:30 pm-7:15 pm

1 stop10h 45m

$1,031

ChicagoDonegal

ORD Chicago O'Hare Intl - CFN Donegal

ORDCFN

Chicago O'Hare Intl

Mon 9/28

10:25 pm-2:00 pm

2 stops33h 35m

Donegal

Mon 10/5

2:30 pm-12:30 pm

2 stops28h 00m

$1,039

ChicagoDonegal

ORD Chicago O'Hare Intl - CFN Donegal

ORDCFN

Chicago O'Hare Intl

Mon 8/31

9:00 pm-2:00 pm

1 stop11h 00m

Donegal

Wed 9/9

2:30 pm-7:15 pm

1 stop10h 45m

$1,041

ChicagoDonegal

ORD Chicago O'Hare Intl - CFN Donegal

ORDCFN

Chicago O'Hare Intl

Mon 9/28

9:00 pm-2:00 pm

1 stop11h 00m

Donegal

Mon 10/5

2:30 pm-12:30 pm

2 stops28h 00m

$1,046

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Illinois to Donegal flight deals and tips

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

Best Price Found

$966

Fastest flight time

19h 10m

Direct flights

None
The best flight deal from Illinois to Donegal found on momondo in the last 72 hours is $966
The fastest flight from Illinois to Donegal takes 19h 10m
There are no direct flights from Illinois to Donegal. There are no popular flight routes from Illinois to Donegal.
Search flight deals

Frequently asked questions about flying from Illinois to Donegal

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

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

  • How old do you have to be to fly from Illinois 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 Illinois 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.

Frequently asked questions about flying from Illinois to Donegal

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

    Confirm your travel details to search for the latest offers for flights from Illinois to Donegal. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Illinois to Donegal with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Traveling to a place near Donegal?

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

Why use momondo?

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

It is quick and easy to find Illinois to Donegal flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Donegal that suits you.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Illinois to Donegal.

I’m not ready to book a flight from Illinois 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 from Illinois and alert you when they change.

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