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Cheap flights from Illinois to Knock from €559

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Knock departing on 28/9. 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 Knock

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:59 - 12:35ORD  Chicago O'Hare Intl-NOC Knock Intl
17h 36m2 stops Toronto Pearson Intl London Heathrow
Multiple Airlines Logo
13:05 - 08:00NOC  Knock Intl-ORD Chicago O'Hare Intl
24h 55m2 stops London Heathrow Toronto Pearson Intl
€799Multiple Airlines
Wed, 30 Sep - Wed, 7 Oct
Multiple Airlines Logo
15:40 - 12:35ORD  Chicago O'Hare Intl-NOC Knock Intl
38h 55m2 stops Montreal Pierre Elliott Trudeau Intl London Heathrow
Multiple Airlines Logo
13:05 - 20:12NOC  Knock Intl-ORD Chicago O'Hare Intl
37h 07m2 stops London Heathrow Montreal Pierre Elliott Trudeau Intl
€848Multiple Airlines
Sat, 26 Sep - Sat, 3 Oct
British Airways Logo
17:10 - 12:25ORD  Chicago O'Hare Intl-NOC Knock Intl
13h 15m1 stop London Heathrow
British Airways Logo
13:00 - 19:15NOC  Knock Intl-ORD Chicago O'Hare Intl
12h 15m1 stop London Heathrow
€850British Airways
Mon, 18 Jan - Thu, 21 Jan
Multiple Airlines Logo
17:35 - 12:35ORD  Chicago O'Hare Intl-NOC Knock Intl
13h 00m2 stops Toronto Pearson Intl London Heathrow
Multiple Airlines Logo
13:05 - 14:05NOC  Knock Intl-ORD Chicago O'Hare Intl
31h 00m2 stops London Heathrow Toronto Pearson Intl
€851Multiple Airlines
Mon, 28 Sep - Mon, 5 Oct
British Airways Logo
12:05 - 12:25ORD  Chicago O'Hare Intl-NOC Knock Intl
18h 20m2 stops Charlotte Douglas London Heathrow
British Airways Logo
13:00 - 19:15NOC  Knock Intl-ORD Chicago O'Hare Intl
12h 15m1 stop London Heathrow
€855British Airways
Mon, 18 Jan - Thu, 21 Jan
Multiple Airlines Logo
15:50 - 12:35ORD  Chicago O'Hare Intl-NOC Knock Intl
14h 45m2 stops Boston Logan Intl London Heathrow
Multiple Airlines Logo
13:05 - 12:30NOC  Knock Intl-ORD Chicago O'Hare Intl
29h 25m1 stop London Heathrow
€856Multiple Airlines
Mon, 28 Sep - Mon, 5 Oct
Multiple Airlines Logo
17:00 - 12:35ORD  Chicago O'Hare Intl-NOC Knock Intl
13h 35m1 stop London Heathrow
Multiple Airlines Logo
13:05 - 12:30NOC  Knock Intl-ORD Chicago O'Hare Intl
29h 25m1 stop London Heathrow
€858Multiple Airlines
Mon, 28 Sep - Mon, 5 Oct
British Airways Logo
13:31 - 12:25ORD  Chicago O'Hare Intl-NOC Knock Intl
16h 54m2 stops New York John F Kennedy Intl London Heathrow
British Airways Logo
13:00 - 20:00NOC  Knock Intl-ORD Chicago O'Hare Intl
37h 00m2 stops London Heathrow Toronto Pearson Intl
€862British Airways
Mon, 18 Jan - Thu, 21 Jan
Multiple Airlines Logo
22:25 - 12:35ORD  Chicago O'Hare Intl-NOC Knock Intl
32h 10m1 stop London Heathrow
Multiple Airlines Logo
13:05 - 12:30NOC  Knock Intl-ORD Chicago O'Hare Intl
29h 25m1 stop London Heathrow
€888Multiple Airlines
Mon, 28 Sep - Mon, 5 Oct
Multiple Airlines Logo
08:45 - 12:35ORD  Chicago O'Hare Intl-NOC Knock Intl
21h 50m2 stops Montreal Pierre Elliott Trudeau Intl London Heathrow
Multiple Airlines Logo
13:05 - 09:48NOC  Knock Intl-ORD Chicago O'Hare Intl
26h 43m2 stops London Heathrow Toronto Pearson Intl
€900Multiple Airlines
Sun, 27 Sep - Sun, 4 Oct

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British Airways flights from Illinois to Knock

Our best British Airways deals on Illinois to Knock flight tickets
British Airways
18 Jan
ORD17:10Chicago O'Hare Intl
13h 15m
1 stop
NOC12:25Knock Intl
21 Jan
NOC13:00Knock Intl
12h 15m
1 stop
ORD19:15Chicago O'Hare Intl
€850
British Airways
18 Jan
ORD12:05Chicago O'Hare Intl
18h 20m
2 stops
NOC12:25Knock Intl
21 Jan
NOC13:00Knock Intl
12h 15m
1 stop
ORD19:15Chicago O'Hare Intl
€855
British Airways
18 Jan
ORD13:31Chicago O'Hare Intl
16h 54m
2 stops
NOC12:25Knock Intl
21 Jan
NOC13:00Knock Intl
37h 00m
2 stops
ORD20:00Chicago O'Hare Intl
€862

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Wed 30/9

12:59-12:35

2 stops17h 36m

Knock Intl

Wed 7/10

13:05-08:00

2 stops24h 55m

€799

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Sat 26/9

15:40-12:35

2 stops38h 55m

Knock Intl

Sat 3/10

13:05-20:12

2 stops37h 07m

€848
Fastest return journey

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Mon 18/1

17:10-12:25

1 stop13h 15m

Knock Intl

Thu 21/1

13:00-19:15

1 stop12h 15m

€850

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Mon 28/9

17:35-12:35

2 stops13h 00m

Knock Intl

Mon 5/10

13:05-14:05

2 stops31h 00m

€851

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Mon 18/1

12:05-12:25

2 stops18h 20m

Knock Intl

Thu 21/1

13:00-19:15

1 stop12h 15m

€855

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Mon 28/9

15:50-12:35

2 stops14h 45m

Knock Intl

Mon 5/10

13:05-12:30

1 stop29h 25m

€856

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Mon 28/9

17:00-12:35

1 stop13h 35m

Knock Intl

Mon 5/10

13:05-12:30

1 stop29h 25m

€858

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Mon 18/1

13:31-12:25

2 stops16h 54m

Knock Intl

Thu 21/1

13:00-20:00

2 stops37h 00m

€862

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Mon 28/9

22:25-12:35

1 stop32h 10m

Knock Intl

Mon 5/10

13:05-12:30

1 stop29h 25m

€888

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Sun 27/9

08:45-12:35

2 stops21h 50m

Knock Intl

Sun 4/10

13:05-09:48

2 stops26h 43m

€900

Flights are sorted by cheapest return flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to Knock from

How to get the cheapest flight ticket from Illinois to Knock

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Illinois to Knock Intl?

British Airways is the most popular carrier operating from Illinois to Knock Intl

Cheap Illinois to Knock flight deals and tips

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

Fastest flight time

11h 30m

Direct flights

None
The fastest flight from Illinois to Knock takes 11h 30m
There are no direct flights from Illinois to Knock. There are no popular flight routes from Illinois to Knock.
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Frequently asked questions about flying from Illinois to Knock

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

    Prices for flights from Illinois to Knock Intl Airport refresh daily.

  • How old do you have to be to fly from Illinois to Knock Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Knock Intl Airport.

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

    The travel and health documents you'll need for your trip to Knock Intl 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 licence and a passport that is valid for six months after your intended arrival at Knock Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Knock?

Book flights to Knock if you plan to visit one of these locations
Sligo
Westport
Carrick-on-Shannon
Belmullet
Newport

Why use momondo?

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

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 Knock from Illinois.

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

momondo does allow users to show only those flights to Knock from Illinois which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Illinois to Knock 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 Knock right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Illinois to Knock flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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