Cheap flights from Northern Ireland to Chicago from $570

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Northern Ireland to Chicago departing on 9/23. 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
0 bags

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Cheap round-trip flights

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6:15 am - 6:15 pmBFS-ORD
42h 00m2 stops
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7:25 pm - 8:35 pmORD-BFS
19h 10m2 stops
Tue, Sep 23 - Tue, Sep 30
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6:10 am - 9:15 pmBFS-ORD
21h 05m2 stops
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10:15 pm - 8:35 pmORD-BFS
16h 20m2 stops
Wed, Sep 24 - Wed, Oct 1
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5:20 pm - 12:35 pmBFS-ORD
25h 15m2 stops
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8:40 am - 6:35 pmORD-BFS
27h 55m3 stops
Wed, Sep 24 - Wed, Oct 1
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6:10 am - 11:51 amBFS-ORD
35h 41m3 stops
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8:40 am - 6:35 pmORD-BFS
27h 55m3 stops
Wed, Sep 24 - Wed, Oct 1
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12:20 pm - 6:15 pmBFS-ORD
11h 55m2 stops
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7:25 pm - 11:10 pmORD-BFS
21h 45m2 stops
Thu, Sep 25 - Thu, Oct 2
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6:10 am - 9:51 amBFS-ORD
33h 41m3 stops
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2:00 pm - 4:15 pmORD-BFS
20h 15m2 stops
Thu, Sep 25 - Thu, Oct 2
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8:55 pm - 12:35 pmBFS-ORD
45h 40m3 stops
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11:25 am - 9:30 pmORD-BFS
28h 05m3 stops
Tue, Sep 23 - Tue, Sep 30
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7:10 am - 4:10 pmBFS-ORD
39h 00m3 stops
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8:25 pm - 8:10 pmORD-BFS
17h 45m2 stops
Thu, Oct 16 - Sun, Nov 2
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10:15 am - 4:10 pmBFS-ORD
35h 55m2 stops
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8:25 pm - 8:10 pmORD-BFS
17h 45m2 stops
Thu, Oct 16 - Sun, Nov 2
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8:55 pm - 12:35 pmBFS-ORD
45h 40m3 stops
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3:50 pm - 4:40 pmORD-BFS
18h 50m2 stops
Tue, Sep 23 - Tue, Sep 30

momondo Fare Finder

 
Customize your flight search to find flights from Northern Ireland to Chicago 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 11, 2025.
Use the filters below to find and compare flights from Northern Ireland to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 9/23

6:15 am-6:15 pm

2 stops42h 00m

Chicago O'Hare Intl

Tue 9/30

7:25 pm-8:35 pm

2 stops19h 10m

$570

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 9/24

6:10 am-9:15 pm

2 stops21h 05m

Chicago O'Hare Intl

Wed 10/1

10:15 pm-8:35 pm

2 stops16h 20m

$688

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 9/24

5:20 pm-12:35 pm

2 stops25h 15m

Chicago O'Hare Intl

Wed 10/1

8:40 am-6:35 pm

3 stops27h 55m

$751

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 9/24

6:10 am-11:51 am

3 stops35h 41m

Chicago O'Hare Intl

Wed 10/1

8:40 am-6:35 pm

3 stops27h 55m

$754

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 9/25

12:20 pm-6:15 pm

2 stops11h 55m

Chicago O'Hare Intl

Thu 10/2

7:25 pm-11:10 pm

2 stops21h 45m

$778

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 9/25

6:10 am-9:51 am

3 stops33h 41m

Chicago O'Hare Intl

Thu 10/2

2:00 pm-4:15 pm

2 stops20h 15m

$786

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 9/23

8:55 pm-12:35 pm

3 stops45h 40m

Chicago O'Hare Intl

Tue 9/30

11:25 am-9:30 pm

3 stops28h 05m

$796

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 10/16

7:10 am-4:10 pm

3 stops39h 00m

Chicago O'Hare Intl

Sun 11/2

8:25 pm-8:10 pm

2 stops17h 45m

$800

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 10/16

10:15 am-4:10 pm

2 stops35h 55m

Chicago O'Hare Intl

Sun 11/2

8:25 pm-8:10 pm

2 stops17h 45m

$812

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 9/23

8:55 pm-12:35 pm

3 stops45h 40m

Chicago O'Hare Intl

Tue 9/30

3:50 pm-4:40 pm

2 stops18h 50m

$819

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Northern Ireland to Chicago flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Northern Ireland to Chicago

Best Price Found

$570

Fastest flight time

11h 55m

Direct flights

None

Airports in Chicago

1 airport
The best flight deal from Northern Ireland to Chicago found on momondo in the last 72 hours is $570
The fastest flight from Northern Ireland to Chicago takes 11h 55m
There are no direct flights from Northern Ireland to Chicago. Popular non-direct route for this connection is Belfast Intl Airport - Chicago O'Hare Intl Airport.
There is 1 airport near Chicago: Chicago O'Hare Intl (ORD)
  • When did momondo last update prices for flights from Northern Ireland to Chicago?

    Prices for flights from Northern Ireland to Chicago are refreshed on a daily basis.

  • How old do you have to be to fly from Northern Ireland to Chicago?

    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 Northern Ireland to Chicago.

  • What documentation or ID do you need to fly to Chicago?

    The travel and health documents required for your trip to Chicago 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 license, and a passport valid for six-months after you plan to arrive at Chicago. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from Northern Ireland to Chicago?

    Confirm your travel details to search for the latest offers for flights from Northern Ireland to Chicago. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Northern Ireland to Chicago with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
New Buffalo
Hammond
Benton Harbor
Saint Joseph
Lansing
Portage
Schererville
Valparaiso
Crown Point
Munster
Chesterton
Monticello
Porter
Griffith
Saint John

Why use momondo?

Why should I use momondo to find a flight deal from Northern Ireland to Chicago?

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 Northern Ireland to Chicago for you.

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

Flights from Northern Ireland to Chicago with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Northern Ireland to Chicago?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Chicago from Northern Ireland.

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

Of course. momondo tracks the price of Northern Ireland to Chicago flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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1 adult
Sat 8/16
Sat 8/23

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Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 78.5 mi from Chicago