$662 Cheap Flights from Knock (NOC) to Chicago (ORD)

View $662 flight on Sat, Jan 3, 2026Opens in a new window

Popular airlines from Knock (NOC-Ireland West) to Chicago O'Hare Intl. Airport (ORD)

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Cheap Flights from Knock to Chicago (NOC-ORD)

Prices were available within the past 7 days and start at $662 for one-way flights and $864 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Wed, May 14 - Sun, May 18
NOC
Knock
ORD
Chicago
$864 Roundtrip, found 2 days ago
$864
Roundtrip
found 2 days ago
Select British Airways flight, departing Wed, May 14 from Knock to Chicago, returning Sun, May 18, priced at $864 found 2 days ago
British Airways
Wed, May 14 - Sun, May 18
NOC
Knock
ORD
Chicago
$874 Roundtrip, found 2 days ago
$874
Roundtrip
found 2 days ago
Select British Airways flight, departing Wed, May 14 from Knock to Chicago, returning Sun, May 18, priced at $874 found 2 days ago
British Airways
Wed, May 14 - Sun, May 18
NOC
Knock
ORD
Chicago
$881 Roundtrip, found 2 days ago
$881
Roundtrip
found 2 days ago
Select British Airways flight, departing Wed, May 14 from Knock to Chicago, returning Sun, May 18, priced at $881 found 2 days ago
British Airways
Wed, May 14 - Sun, May 18
NOC
Knock
ORD
Chicago
$882 Roundtrip, found 2 days ago
$882
Roundtrip
found 2 days ago
Select British Airways flight, departing Wed, May 14 from Knock to Chicago, returning Sun, May 18, priced at $882 found 2 days ago
British Airways
Wed, May 14 - Sun, May 18
NOC
Knock
ORD
Chicago
$892 Roundtrip, found 2 days ago
$892
Roundtrip
found 2 days ago
Select British Airways flight, departing Wed, May 14 from Knock to Chicago, returning Sun, May 18, priced at $892 found 2 days ago
British Airways
Wed, May 14 - Sun, May 18
NOC
Knock
ORD
Chicago
$897 Roundtrip, found 2 days ago
$897
Roundtrip
found 2 days ago
Select British Airways flight, departing Wed, May 14 from Knock to Chicago, returning Sun, May 18, priced at $897 found 2 days ago
British Airways
Wed, May 14 - Sun, May 18
NOC
Knock
ORD
Chicago
$902 Roundtrip, found 2 days ago
$902
Roundtrip
found 2 days ago
Select British Airways flight, departing Wed, May 14 from Knock to Chicago, returning Sun, May 18, priced at $902 found 2 days ago
British Airways
Wed, May 14 - Sun, May 18
NOC
Knock
ORD
Chicago
$905 Roundtrip, found 2 days ago
$905
Roundtrip
found 2 days ago
Select British Airways flight, departing Wed, May 14 from Knock to Chicago, returning Sun, May 18, priced at $905 found 2 days ago
British Airways
Wed, May 14 - Sun, May 18
NOC
Knock
ORD
Chicago
$908 Roundtrip, found 2 days ago
$908
Roundtrip
found 2 days ago
Select British Airways flight, departing Wed, May 14 from Knock to Chicago, returning Sun, May 18, priced at $908 found 2 days ago
British Airways
Wed, May 14 - Sun, May 18
NOC
Knock
ORD
Chicago
$910 Roundtrip, found 2 days ago
$910
Roundtrip
found 2 days ago
Select British Airways flight, departing Wed, May 14 from Knock to Chicago, returning Sun, May 18, priced at $910 found 2 days ago
Flights from Knock (NOC) to Chicago (ORD)
Origin airport
Ireland West
Destination airport
O'Hare Intl.
Roundtrip price
$864
Distance
3553 mi

Knock to Chicago Flights

The cheapest times to fly from Knock to Chicago

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Knock to Chicago are during the month of May. You can find some of the cheapest flights from Knock to Chicago with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Knock to Chicago

Sunday is one of the best days to book for cheap flights from Knock to Chicago: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Knock to Chicago

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Knock to Chicago in 2025. You can also book with separate airlines for your outbound and return journeys, from $662 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Knock to Chicago flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Knock to Chicago airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Ireland West Airport (NOC) to O'Hare Intl. Airport (ORD) cost?
Discover the latest flight deals from NOC to ORD by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from NOC to ORD?
The cheapest flights from NOC to ORD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from NOC to ORD?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from NOC to ORD. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Ireland West Airport (NOC) to O'Hare Intl. Airport (ORD)?
You’ll need to book a flight with a layover when traveling from Ireland West Airport (NOC) to O’Hare Intl. Airport (ORD). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from NOC to ORD?
You’ll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Ireland West Airport (NOC) to O'Hare Intl. Airport (ORD)?
To land at O’Hare Intl. Airport (ORD) without delays, pick a flight that takes off from Ireland West Airport (NOC) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Ireland West Airport (NOC) to O'Hare Intl. Airport (ORD) last-minute?
Booking your flight from NOC to ORD just before your trip is typically more expensive. But if there’s some wiggle room with your travel dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a NOC to ORD flight and hotel package?
Compared with arranging flights and hotels separately, booking a NOC to ORD flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one easy place will take the stress out of planning your trip. Simply secure your flights and choose from our wide range of stays, then customize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Ireland West Airport (NOC) to O'Hare Intl. Airport (ORD)?
Generally, it’s possible to cancel or reschedule your NOC to ORD flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline’s policies in your itinerary to see what changes are allowed and if any costs are involved. You’ll also find more details on our Customer Service portal.

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*Available to One Key members.