Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport to Knock departing on 16/9. 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 Chicago O'Hare Intl Airport to Knock

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
21:30 - 12:35
ORD
-
NOC
33h 05m
1 stop
Multiple Airlines Logo
13:00 - 10:45
NOC
-
ORD
27h 45m
1 stop
€856Multiple Airlines
Wed, 23 Sep - Wed, 2 Dec
Multiple Airlines Logo
11:05 - 12:35
ORD
-
NOC
19h 30m
2 stops
Multiple Airlines Logo
13:05 - 20:12
NOC
-
ORD
37h 07m
2 stops
€873Multiple Airlines
Tue, 15 Sep - Tue, 22 Sep
British Airways Logo
19:05 - 12:35
ORD
-
NOC
11h 30m
1 stop
British Airways Logo
13:00 - 14:00
NOC
-
ORD
31h 00m
2 stops
€875British Airways
Wed, 23 Sep - Wed, 2 Dec
Multiple Airlines Logo
11:05 - 12:35
ORD
-
NOC
19h 30m
2 stops
Multiple Airlines Logo
13:05 - 09:00
NOC
-
ORD
25h 55m
2 stops
€878Multiple Airlines
Wed, 26 Aug - Wed, 2 Sep
Multiple Airlines Logo
11:05 - 12:35
ORD
-
NOC
19h 30m
2 stops
Multiple Airlines Logo
13:05 - 09:00
NOC
-
ORD
25h 55m
2 stops
€879Multiple Airlines
Wed, 26 Aug - Wed, 2 Sep
Multiple Airlines Logo
19:05 - 12:35
ORD
-
NOC
11h 30m
1 stop
Multiple Airlines Logo
13:05 - 15:00
NOC
-
ORD
31h 55m
1 stop
€904Multiple Airlines
Wed, 26 Aug - Wed, 2 Sep
Multiple Airlines Logo
13:15 - 12:35
ORD
-
NOC
17h 20m
2 stops
Multiple Airlines Logo
13:05 - 17:15
NOC
-
ORD
34h 10m
1 stop
€909Multiple Airlines
Wed, 26 Aug - Wed, 2 Sep
Multiple Airlines Logo
18:05 - 12:35
ORD
-
NOC
12h 30m
1 stop
Multiple Airlines Logo
13:05 - 17:15
NOC
-
ORD
34h 10m
1 stop
€923Multiple Airlines
Wed, 26 Aug - Wed, 2 Sep
Multiple Airlines Logo
17:55 - 12:35
ORD
-
NOC
12h 40m
1 stop
Multiple Airlines Logo
13:05 - 12:25
NOC
-
ORD
29h 20m
1 stop
€925Multiple Airlines
Tue, 15 Sep - Tue, 22 Sep
Multiple Airlines Logo
18:05 - 12:35
ORD
-
NOC
12h 30m
1 stop
Multiple Airlines Logo
13:05 - 19:19
NOC
-
ORD
36h 14m
2 stops
€926Multiple Airlines
Wed, 26 Aug - Wed, 2 Sep

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Aer Lingus flights from Chicago O'Hare Intl Airport to Knock

Our best Aer Lingus deals on Chicago O'Hare Intl Airport to Knock flight tickets
Aer Lingus
24 Aug
ORD15:45Chicago O'Hare Intl
14h 50m
2 stops
NOC12:35Knock Intl
31 Aug
NOC13:05Knock Intl
28h 25m
2 stops
ORD11:30Chicago O'Hare Intl
€1,043
Aer Lingus
5 Aug
ORD15:45Chicago O'Hare Intl
14h 50m
2 stops
NOC12:35Knock Intl
11 Aug
NOC13:05Knock Intl
28h 25m
2 stops
ORD11:30Chicago O'Hare Intl
€1,175

British Airways flights from Chicago O'Hare Intl Airport to Knock

Our best British Airways deals on Chicago O'Hare Intl Airport to Knock flight tickets
British Airways
23 Sept
ORD19:05Chicago O'Hare Intl
11h 30m
1 stop
NOC12:35Knock Intl
2 Dec
NOC13:00Knock Intl
31h 00m
2 stops
ORD14:00Chicago O'Hare Intl
€875
British Airways
26 Aug
ORD19:05Chicago O'Hare Intl
11h 30m
1 stop
NOC12:35Knock Intl
2 Sept
NOC13:05Knock Intl
30h 25m
2 stops
ORD13:30Chicago O'Hare Intl
€931
British Airways
14 Sept
ORD17:55Chicago O'Hare Intl
12h 40m
1 stop
NOC12:35Knock Intl
21 Sept
NOC13:05Knock Intl
31h 20m
2 stops
ORD14:25Chicago O'Hare Intl
€979

momondo Fare Finder

 
Customise your flight search to find flights from Chicago O'Hare Intl Airport 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 3 August 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Knock that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoKnock

ORD - NOC

ORDNOC

Chicago O'Hare Intl

Wed 23/9

21:30-12:35

1 stop33h 05m

Knock Intl

Wed 2/12

13:00-10:45

1 stop27h 45m

€856

ChicagoKnock

ORD - NOC

ORDNOC

Chicago O'Hare Intl

Tue 15/9

11:05-12:35

2 stops19h 30m

Knock Intl

Tue 22/9

13:05-20:12

2 stops37h 07m

€873

ChicagoKnock

ORD - NOC

ORDNOC

Chicago O'Hare Intl

Wed 23/9

19:05-12:35

1 stop11h 30m

Knock Intl

Wed 2/12

13:00-14:00

2 stops31h 00m

€875

ChicagoKnock

ORD - NOC

ORDNOC

Chicago O'Hare Intl

Wed 26/8

11:05-12:35

2 stops19h 30m

Knock Intl

Wed 2/9

13:05-09:00

2 stops25h 55m

€878

ChicagoKnock

ORD - NOC

ORDNOC

Chicago O'Hare Intl

Wed 26/8

11:05-12:35

2 stops19h 30m

Knock Intl

Wed 2/9

13:05-09:00

2 stops25h 55m

€879

ChicagoKnock

ORD - NOC

ORDNOC

Chicago O'Hare Intl

Wed 26/8

19:05-12:35

1 stop11h 30m

Knock Intl

Wed 2/9

13:05-15:00

1 stop31h 55m

€904

ChicagoKnock

ORD - NOC

ORDNOC

Chicago O'Hare Intl

Wed 26/8

13:15-12:35

2 stops17h 20m

Knock Intl

Wed 2/9

13:05-17:15

1 stop34h 10m

€909

ChicagoKnock

ORD - NOC

ORDNOC

Chicago O'Hare Intl

Wed 26/8

18:05-12:35

1 stop12h 30m

Knock Intl

Wed 2/9

13:05-17:15

1 stop34h 10m

€923
Fastest return journey

ChicagoKnock

ORD - NOC

ORDNOC

Chicago O'Hare Intl

Tue 15/9

17:55-12:35

1 stop12h 40m

Knock Intl

Tue 22/9

13:05-12:25

1 stop29h 20m

€925

ChicagoKnock

ORD - NOC

ORDNOC

Chicago O'Hare Intl

Wed 26/8

18:05-12:35

1 stop12h 30m

Knock Intl

Wed 2/9

13:05-19:19

2 stops36h 14m

€926

Flights are sorted by cheapest return flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

See travel insights to Knock from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl to Knock Intl?

British Airways is the most popular carrier operating from Chicago O'Hare Intl to Knock Intl

When to book flights from Chicago O'Hare Intl Airport to Knock

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to Knock according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Chicago O'Hare Intl Airport to Knock (ORD to NOC) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Knock

Fastest flight time

15h 10m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to Knock takes 15h 10m
There are no direct flights from Chicago O'Hare Intl Airport to Knock. There are no popular flight routes from Chicago O'Hare Intl Airport to Knock.
Search flight deals

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Knock

  • How far is Chicago O'Hare Intl to Knock Intl by plane?

    Chicago O'Hare Intl and Knock Intl are 5713.7 km apart from one another. In terms of flight time, this usually takes a little over 15h 10m.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Knock Intl Airport?

    Prices for flights from Chicago O'Hare Intl Airport to Knock Intl Airport are updated daily.

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to Knock Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago O'Hare Intl Airport to Knock Intl Airport.

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

    The travel and health documents required for your trip to Knock Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Knock Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Why use momondo?

Why should I use momondo to find a flight deal from Chicago 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 Chicago.

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

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

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

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

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

If you are not ready to book a flight from Chicago 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.

An easier way to manage your Knock trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 2/9
Wed 9/9
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ireland