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Cheap flights from Illinois to Donegal from €965

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Donegal departing on 15/7. 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
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Find the cheapest flights from Illinois to Donegal

Cheap return flights

Enter your travel dates to find the best prices.
Aer Lingus Logo
21:00 - 14:00
ORD
-
CFN
11h 00m
1 stop
Aer Lingus Logo
14:30 - 09:10
CFN
-
ORD
48h 40m
2 stops
€965Aer Lingus
Wed, 15 Jul - Sat, 18 Jul
Aer Lingus Logo
18:47 - 14:00
ORD
-
CFN
37h 13m
2 stops
Aer Lingus Logo
14:30 - 09:10
CFN
-
ORD
48h 40m
2 stops
€1,000Aer Lingus
Wed, 15 Jul - Sat, 18 Jul
Multiple Airlines Logo
07:25 - 14:00
ORD
-
CFN
24h 35m
3 stops
Multiple Airlines Logo
15:55 - 09:40
CFN
-
ORD
47h 45m
3 stops
€1,247Multiple Airlines
Wed, 15 Jul - Sat, 18 Jul
Multiple Airlines Logo
15:45 - 20:00
ORD
-
CFN
22h 15m
2 stops
Multiple Airlines Logo
15:55 - 09:40
CFN
-
ORD
47h 45m
3 stops
€1,294Multiple Airlines
Wed, 15 Jul - Sat, 18 Jul
Multiple Airlines Logo
15:45 - 14:00
ORD
-
CFN
16h 15m
1 stop
Multiple Airlines Logo
14:30 - 11:30
CFN
-
ORD
27h 00m
1 stop
€1,296Multiple Airlines
Wed, 15 Jul - Sat, 18 Jul
British Airways Logo
18:15 - 14:00
ORD
-
CFN
13h 45m
2 stops
British Airways Logo
14:30 - 18:15
CFN
-
ORD
33h 45m
2 stops
€1,384British Airways
Mon, 31 Aug - Fri, 4 Sep
British Airways Logo
18:15 - 14:00
ORD
-
CFN
13h 45m
2 stops
British Airways Logo
14:30 - 18:15
CFN
-
ORD
33h 45m
2 stops
€1,386British Airways
Mon, 31 Aug - Fri, 4 Sep

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Aer Lingus flights from Illinois to Donegal

Our best Aer Lingus deals on Illinois to Donegal flight tickets
Aer Lingus
15 Jul
ORD21:00Chicago O'Hare Intl
11h 00m
1 stop
CFN14:00Donegal
18 Jul
CFN14:30Donegal
48h 40m
2 stops
ORD09:10Chicago O'Hare Intl
€965
Aer Lingus
15 Jul
ORD18:47Chicago O'Hare Intl
37h 13m
2 stops
CFN14:00Donegal
18 Jul
CFN14:30Donegal
48h 40m
2 stops
ORD09:10Chicago O'Hare Intl
€1,000

British Airways flights from Illinois to Donegal

Our best British Airways deals on Illinois to Donegal flight tickets
British Airways
31 Aug
ORD18:15Chicago O'Hare Intl
13h 45m
2 stops
CFN14:00Donegal
4 Sept
CFN14:30Donegal
33h 45m
2 stops
ORD18:15Chicago O'Hare Intl
€1,384
British Airways
31 Aug
ORD18:15Chicago O'Hare Intl
13h 45m
2 stops
CFN14:00Donegal
4 Sept
CFN14:30Donegal
33h 45m
2 stops
ORD18:15Chicago O'Hare Intl
€1,386

momondo Fare Finder

 
Customise 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 13,528 searches. Data last updated 3 July 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 return flight

ChicagoDonegal

ORD - CFN

ORDCFN

Chicago O'Hare Intl

Wed 15/7

21:00-14:00

1 stop11h 00m

Donegal

Sat 18/7

14:30-09:10

2 stops48h 40m

€965

ChicagoDonegal

ORD - CFN

ORDCFN

Chicago O'Hare Intl

Wed 15/7

18:47-14:00

2 stops37h 13m

Donegal

Sat 18/7

14:30-09:10

2 stops48h 40m

€1,000

ChicagoDonegal

ORD - CFN

ORDCFN

Chicago O'Hare Intl

Wed 15/7

07:25-14:00

3 stops24h 35m

Donegal

Sat 18/7

15:55-09:40

3 stops47h 45m

€1,247

ChicagoDonegal

ORD - CFN

ORDCFN

Chicago O'Hare Intl

Wed 15/7

15:45-20:00

2 stops22h 15m

Donegal

Sat 18/7

15:55-09:40

3 stops47h 45m

€1,294
Fastest return journey

ChicagoDonegal

ORD - CFN

ORDCFN

Chicago O'Hare Intl

Wed 15/7

15:45-14:00

1 stop16h 15m

Donegal

Sat 18/7

14:30-11:30

1 stop27h 00m

€1,296

ChicagoDonegal

ORD - CFN

ORDCFN

Chicago O'Hare Intl

Mon 31/8

18:15-14:00

2 stops13h 45m

Donegal

Fri 4/9

14:30-18:15

2 stops33h 45m

€1,384

ChicagoDonegal

ORD - CFN

ORDCFN

Chicago O'Hare Intl

Mon 31/8

18:15-14:00

2 stops13h 45m

Donegal

Fri 4/9

14:30-18:15

2 stops33h 45m

€1,386

Flights are sorted by cheapest return 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

Fastest flight time

11h 00m

Direct flights

None
The fastest flight from Illinois to Donegal takes 11h 00m
There are no direct flights from Illinois to Donegal. There are no popular flight routes from Illinois to Donegal.
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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 were last updated today.

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

  • What documentation or ID do you need to fly to Donegal Airport?

    The required travel and health documents for your Donegal Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Donegal Airport. We recommend that you seek guidance from your airline or a reliable 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?

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

  • 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?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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 Illinois to Donegal?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Donegal from Illinois.

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

Yes. momondo allows you to filter the results for Illinois to Donegal flights to just show those with flexible booking policies.

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

Once you have performed a search for Illinois to Donegal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Illinois to Donegal flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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