How long is the flight from Illinois to Donegal?

There are many flights that can get you from Illinois to Donegal in 17h 25m. Fly via British Airways to get the fastest option. Illinois and Donegal are separated by a distance of 3541 mi.

In terms of precipitation, rainfall in Donegal ranges from 2.3 - 4.6 inches per month. October is typically the wettest month, when rainfall can reach 4.6 in. April is typically the driest time to visit Donegal when rainfall is around 2.3 in.

If weather is an important factor for your trip to Donegal, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 57.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

What is the cheapest time of day to fly from IL to CFN?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Donegal as you normally would.

What airport do you fly into for flights to Donegal from Illinois?

For a flight from Illinois to Donegal, you will be flying into Donegal. Donegal (CFN) is just 28.5 mi from the center of the city.

Can I find deals for flights from Illinois to Donegal that include hotel bookings?

Yes. In addition to deals on Illinois to Donegal flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Illinois to Donegal?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Donegal.

Can I find deals for business class flights from Illinois to Donegal?

Yes. Cheapflights offers flight deals from Illinois to Donegal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$799+ Cheap Flights from Illinois to Donegal

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Illinois to Donegal with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Illinois to Donegal

Cheapest flights from Illinois to Donegal
Explore the most affordable flight options available from Illinois to Donegal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

Wed 12/38:35 pmORD - CFN

2 stops17h 25mBritish Airways

Sun 12/710:00 amCFN - ORD

2 stops33h 50mBritish Airways

Deal found 10/29

$799

Best flights from Illinois to Donegal
Discover carefully curated flight deals from Illinois to Donegal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2025.

Wed 12/38:35 pmORD - CFN

2 stops17h 25mBritish Airways

Sun 12/710:00 amCFN - ORD

2 stops33h 50mBritish Airways

Deal found 10/29

$799

Cheap flight deals from Illinois to Donegal

Most accurate provider	FlightHub 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$799 (British Airways)

Provider with most accurate pricing for Chicago (CHI)-Donegal flight deals.

Search Deals

Provider most trusted by Cheapflights users for Chicago (CHI)-Donegal flights.

Search Deals

From Illinois to Donegal

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

ChicagoDonegal

ORD - CFN

ORDCFN

Chicago O'Hare Intl

Wed 12/3

8:35 pm-8:00 pm

2 stops17h 25m

Donegal

Sun 12/7

10:00 am-1:50 pm

2 stops33h 50m

$799

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Best time to book a flight from Illinois to Donegal

Have a flexible travel schedule? Discover the best time to fly to Donegal from Illinois with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Donegal

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly into for flights to Donegal from Illinois?
For a flight from Illinois to Donegal, you will be flying into Donegal. Donegal (CFN) is just 28.5 mi from the center of the city.
How long is the flight from Illinois to Donegal?
There are many flights that can get you from Illinois to Donegal in 17h 25m. Fly via British Airways to get the fastest option. Illinois and Donegal are separated by a distance of 3541 mi.
Can I find deals for flights from Illinois to Donegal that include hotel bookings?
Yes. In addition to deals on Illinois to Donegal flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Illinois to Donegal?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Donegal.
Can I find deals for business class flights from Illinois to Donegal?
Yes. Cheapflights offers flight deals from Illinois to Donegal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Illinois to Donegal

John F Kennedy Intl to Dublin flights

Newark to Dublin flights

Boston to Dublin flights

O'Hare Intl to Dublin flights

LaGuardia to Dublin flights

Dulles Intl to Dublin flights

Minneapolis to Dublin flights

Philadelphia to Dublin flights

Seattle to Dublin flights

San Francisco to Dublin flights

Los Angeles to Dublin flights

Dallas/Fort Worth to Dublin flights

Atlanta to Dublin flights

Reagan-National to Dublin flights

Baltimore to Dublin flights

Orlando to Dublin flights

Midway to Dublin flights

Denver to Dublin flights

Raleigh to Dublin flights

Indianapolis to Dublin flights

John F Kennedy Intl to Shannon flights

Charlotte to Dublin flights

Love Field to Dublin flights

Cleveland to Dublin flights

Boston to Shannon flights

Hartford to Dublin flights

Nashville to Dublin flights

Miami to Dublin flights

Portland to Dublin flights

Austin to Dublin flights

Detroit to Dublin flights

Sky Harbor Intl to Dublin flights

Hobby to Dublin flights

Newark to Shannon flights

Tampa to Dublin flights

Kansas City to Dublin flights

Ontario to Dublin flights

Santa Ana to Dublin flights

Pittsburgh to Dublin flights

San Diego to Dublin flights

LaGuardia to Shannon flights

Oakland to Dublin flights

George Bush Intcntl to Dublin flights

Las Vegas to Dublin flights

Cincinnati to Dublin flights

San Jose to Dublin flights

Burbank to Dublin flights

Columbus to Dublin flights

Salt Lake City to Dublin flights

Fort Lauderdale to Dublin flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$799+ Cheap flights from Illinois to Donegal (CFN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to Donegal with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Illinois to Donegal

Cheapest flights from Illinois to DonegalExplore the most affordable flight options available from Illinois to Donegal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

Explore the most affordable flight options available from Illinois to Donegal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

Cheap flight deals from Illinois to Donegal

Keep the following information in mind while searching for Illinois to Donegal flight deals. Data was last updated October 30, 2025.

Most accurate provider

Most trusted provider

Round-trip from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Donegal that are best for you.

Best time to book a flight from Illinois to Donegal

Have a flexible travel schedule? Discover the best time to fly to Donegal from Illinois with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Donegal

Related info for your journey

Find useful and relevant information for your journey from Illinois to Donegal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Donegal from Illinois?

How long is the flight from Illinois to Donegal?

Can I find deals for flights from Illinois to Donegal that include hotel bookings?

How can I find direct flights from Illinois to Donegal?

Can I find deals for business class flights from Illinois to Donegal?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Donegal

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Illinois to Donegal
Explore the most affordable flight options available from Illinois to Donegal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.