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Cheap flights from Illinois to Knock from $647

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 9/28. 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 round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
5:10 pm - 12:25 pmORD  Chicago O'Hare Intl-NOC Knock Intl
13h 15m1 stop London Heathrow
British Airways Logo
1:00 pm - 7:15 pmNOC  Knock Intl-ORD Chicago O'Hare Intl
12h 15m1 stop London Heathrow
$979British Airways
Mon, Jan 18 - Thu, Jan 21
Multiple Airlines Logo
3:40 pm - 12:35 pmORD  Chicago O'Hare Intl-NOC Knock Intl
38h 55m2 stops Montreal Pierre Elliott Trudeau Intl London Heathrow
Multiple Airlines Logo
1:05 pm - 8:12 pmNOC  Knock Intl-ORD Chicago O'Hare Intl
37h 07m2 stops London Heathrow Montreal Pierre Elliott Trudeau Intl
$981Multiple Airlines
Sat, Sep 26 - Sat, Oct 3
British Airways Logo
5:10 pm - 12:25 pmORD  Chicago O'Hare Intl-NOC Knock Intl
13h 15m1 stop London Heathrow
British Airways Logo
1:00 pm - 7:15 pmNOC  Knock Intl-ORD Chicago O'Hare Intl
12h 15m1 stop London Heathrow
$984British Airways
Mon, Jan 18 - Thu, Jan 21
Multiple Airlines Logo
5:35 pm - 12:35 pmORD  Chicago O'Hare Intl-NOC Knock Intl
13h 00m2 stops Toronto Pearson Intl London Heathrow
Multiple Airlines Logo
1:05 pm - 2:05 pmNOC  Knock Intl-ORD Chicago O'Hare Intl
31h 00m2 stops London Heathrow Toronto Pearson Intl
$985Multiple Airlines
Mon, Sep 28 - Mon, Oct 5
British Airways Logo
12:05 pm - 12:25 pmORD  Chicago O'Hare Intl-NOC Knock Intl
18h 20m2 stops Charlotte Douglas London Heathrow
British Airways Logo
1:00 pm - 7:15 pmNOC  Knock Intl-ORD Chicago O'Hare Intl
12h 15m1 stop London Heathrow
$989British Airways
Mon, Jan 18 - Thu, Jan 21
British Airways Logo
1:31 pm - 12:25 pmORD  Chicago O'Hare Intl-NOC Knock Intl
16h 54m2 stops New York John F Kennedy Intl London Heathrow
British Airways Logo
1:00 pm - 8:00 pmNOC  Knock Intl-ORD Chicago O'Hare Intl
37h 00m2 stops London Heathrow Toronto Pearson Intl
$992British Airways
Mon, Jan 18 - Thu, Jan 21
British Airways Logo
1:31 pm - 12:25 pmORD  Chicago O'Hare Intl-NOC Knock Intl
16h 54m2 stops New York John F Kennedy Intl London Heathrow
British Airways Logo
1:00 pm - 8:00 pmNOC  Knock Intl-ORD Chicago O'Hare Intl
37h 00m2 stops London Heathrow Toronto Pearson Intl
$997British Airways
Mon, Jan 18 - Thu, Jan 21
Multiple Airlines Logo
2:15 pm - 12:35 pmORD  Chicago O'Hare Intl-NOC Knock Intl
16h 20m2 stops Toronto Pearson Intl London Heathrow
Multiple Airlines Logo
1:05 pm - 8:00 amNOC  Knock Intl-ORD Chicago O'Hare Intl
24h 55m2 stops London Heathrow Toronto Pearson Intl
$1,005Multiple Airlines
Thu, Sep 24 - Thu, Oct 1
Multiple Airlines Logo
7:25 pm - 5:30 pmORD  Chicago O'Hare Intl-NOC Knock Intl
16h 05m3 stops Reykjavik Keflavik Intl Dublin London Stansted
Multiple Airlines Logo
9:10 am - 9:20 pmNOC  Knock Intl-ORD Chicago O'Hare Intl
42h 10m3 stops Liverpool J. Lennon Madrid Barajas Bogotá El Dorado
$1,011Multiple Airlines
Thu, Sep 10 - Wed, Sep 16
Multiple Airlines Logo
10:25 pm - 12:35 pmORD  Chicago O'Hare Intl-NOC Knock Intl
32h 10m1 stop London Heathrow
Multiple Airlines Logo
1:05 pm - 12:30 pmNOC  Knock Intl-ORD Chicago O'Hare Intl
29h 25m1 stop London Heathrow
$1,028Multiple Airlines
Mon, Sep 28 - Mon, Oct 5

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British Airways flights from Illinois to Knock

Our best British Airways deals on Illinois to Knock flight tickets
British Airways
Jan 18
ORD5:10 pmChicago O'Hare Intl
13h 15m
1 stop
NOC12:25 pmKnock Intl
Jan 21
NOC1:00 pmKnock Intl
12h 15m
1 stop
ORD7:15 pmChicago O'Hare Intl
$979
British Airways
Jan 18
ORD5:10 pmChicago O'Hare Intl
13h 15m
1 stop
NOC12:25 pmKnock Intl
Jan 21
NOC1:00 pmKnock Intl
12h 15m
1 stop
ORD7:15 pmChicago O'Hare Intl
$984
British Airways
Jan 18
ORD12:05 pmChicago O'Hare Intl
18h 20m
2 stops
NOC12:25 pmKnock Intl
Jan 21
NOC1:00 pmKnock Intl
12h 15m
1 stop
ORD7:15 pmChicago O'Hare Intl
$989

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated August 14, 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 round-trip
Quickest round-trip

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Mon 1/18

5:10 pm-12:25 pm

1 stop13h 15m

Knock Intl

Thu 1/21

1:00 pm-7:15 pm

1 stop12h 15m

$979

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Sat 9/26

3:40 pm-12:35 pm

2 stops38h 55m

Knock Intl

Sat 10/3

1:05 pm-8:12 pm

2 stops37h 07m

$981

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Mon 1/18

5:10 pm-12:25 pm

1 stop13h 15m

Knock Intl

Thu 1/21

1:00 pm-7:15 pm

1 stop12h 15m

$984

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Mon 9/28

5:35 pm-12:35 pm

2 stops13h 00m

Knock Intl

Mon 10/5

1:05 pm-2:05 pm

2 stops31h 00m

$985

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Mon 1/18

12:05 pm-12:25 pm

2 stops18h 20m

Knock Intl

Thu 1/21

1:00 pm-7:15 pm

1 stop12h 15m

$989

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Mon 1/18

1:31 pm-12:25 pm

2 stops16h 54m

Knock Intl

Thu 1/21

1:00 pm-8:00 pm

2 stops37h 00m

$992

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Mon 1/18

1:31 pm-12:25 pm

2 stops16h 54m

Knock Intl

Thu 1/21

1:00 pm-8:00 pm

2 stops37h 00m

$997

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Thu 9/24

2:15 pm-12:35 pm

2 stops16h 20m

Knock Intl

Thu 10/1

1:05 pm-8:00 am

2 stops24h 55m

$1,005

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Thu 9/10

7:25 pm-5:30 pm

3 stops16h 05m

Knock Intl

Wed 9/16

9:10 am-9:20 pm

3 stops42h 10m

$1,011

ChicagoKnock

ORD Chicago O'Hare Intl - NOC Knock Intl

ORDNOC

Chicago O'Hare Intl

Mon 9/28

10:25 pm-12:35 pm

1 stop32h 10m

Knock Intl

Mon 10/5

1:05 pm-12:30 pm

1 stop29h 25m

$1,028

Flights are sorted by cheapest round-trip 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 airlines fly to Knock?

United Airlines, American Airlines and Lufthansa are the top three most popular airlines that fly to Knock from Illinois according to our data. United Airlines is the first choice among our users, with 76% of people opting to fly with this airline when traveling to Knock. Keep in mind that there are 3 different airlines that fly to Knock on a routine basis, so you have a few additional options to choose from.

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

13h 15m

Direct flights

None
The fastest flight from Illinois to Knock takes 13h 15m
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 are updated 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers 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 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 license 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.

Traveling to a place near Knock?

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

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Knock for you.

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

Yes. momondo enables you to select and highlight flights to Knock from Illinois with this policy.

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

momondo provides multiple filters to help you find the best flight to Knock from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Illinois to Knock now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Knock and let you know when they change.

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