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Cheap flights from Chicago to Belfast from $359

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 to Belfast departing on 9/8. 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

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Find the cheapest flights from Chicago to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:30 pm - 7:50 pmORD  Chicago O'Hare Intl-BFS Belfast Intl
19h 20m2 stops Reykjavik Keflavik Intl Manchester
Multiple Airlines Logo
7:50 am - 8:20 pmBFS  Belfast Intl-ORD Chicago O'Hare Intl
42h 30m3 stops Manchester Madrid Barajas Bogotá El Dorado
$757Multiple Airlines
Thu, Nov 5 - Sun, Nov 8
Multiple Airlines Logo
7:25 pm - 10:40 pmORD  Chicago O'Hare Intl-BFS Belfast Intl
21h 15m2 stops Reykjavik Keflavik Intl London Gatwick
Multiple Airlines Logo
9:10 pm - 7:48 pmBFS  Belfast Intl-ORD Chicago O'Hare Intl
28h 38m2 stops London Gatwick Toronto Pearson Intl
$864Multiple Airlines
Sat, Sep 12 - Fri, Sep 18
Multiple Airlines Logo
9:55 am - 2:30 pmORD  Chicago O'Hare Intl-BHD Belfast City
22h 35m2 stops Toronto Pearson Intl Glasgow Intl
Multiple Airlines Logo
7:00 am - 1:21 pmBHD  Belfast City-ORD Chicago O'Hare Intl
36h 21m3 stops London Gatwick Montreal Pierre Elliott Trudeau Intl Toronto Island
$866Multiple Airlines
Wed, Sep 16 - Sun, Sep 20
Multiple Airlines Logo
6:30 pm - 8:30 pmORD  Chicago O'Hare Intl-BHD Belfast City
20h 00m2 stops Reykjavik Keflavik Intl London Gatwick
Multiple Airlines Logo
7:30 am - 5:20 pmBHD  Belfast City-ORD Chicago O'Hare Intl
15h 50m2 stops London Gatwick Reykjavik Keflavik Intl
$871Multiple Airlines
Thu, Nov 5 - Sun, Nov 8
British Airways Logo
5:10 pm - 10:20 amORD  Chicago O'Hare Intl-BHD Belfast City
11h 10m1 stop London Heathrow
British Airways Logo
7:40 am - 1:45 pmBHD  Belfast City-ORD Chicago O'Hare Intl
12h 05m1 stop London Heathrow
$886British Airways
Sun, Nov 15 - Thu, Nov 19
Multiple Airlines Logo
7:25 pm - 10:40 pmORD  Chicago O'Hare Intl-BFS Belfast Intl
21h 15m2 stops Reykjavik Keflavik Intl London Gatwick
Multiple Airlines Logo
9:10 pm - 8:12 pmBFS  Belfast Intl-ORD Chicago O'Hare Intl
29h 02m3 stops London Gatwick Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
$892Multiple Airlines
Sat, Sep 12 - Sun, Sep 20
Multiple Airlines Logo
10:25 pm - 10:40 pmORD  Chicago O'Hare Intl-BFS Belfast Intl
18h 15m2 stops Reykjavik Keflavik Intl London Gatwick
Multiple Airlines Logo
8:15 pm - 10:15 amBFS  Belfast Intl-ORD Chicago O'Hare Intl
44h 00m3 stops London Gatwick Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
$895Multiple Airlines
Sat, Sep 12 - Fri, Sep 18
Multiple Airlines Logo
7:25 pm - 10:40 pmORD  Chicago O'Hare Intl-BFS Belfast Intl
21h 15m2 stops Reykjavik Keflavik Intl London Gatwick
Multiple Airlines Logo
7:00 am - 12:35 pmBFS  Belfast Intl-ORD Chicago O'Hare Intl
35h 35m2 stops London Stansted Munich Franz Josef Strauss
$896Multiple Airlines
Sat, Sep 12 - Sun, Sep 20
Multiple Airlines Logo
3:45 pm - 5:05 pmORD  Chicago O'Hare Intl-BFS Belfast Intl
19h 20m2 stops Toronto Pearson Intl Glasgow Intl
Multiple Airlines Logo
9:10 pm - 8:12 pmBFS  Belfast Intl-ORD Chicago O'Hare Intl
29h 02m3 stops London Gatwick Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
$899Multiple Airlines
Wed, Sep 16 - Sun, Sep 20
British Airways Logo
5:10 pm - 10:20 amORD  Chicago O'Hare Intl-BHD Belfast City
11h 10m1 stop London Heathrow
British Airways Logo
5:45 pm - 1:45 pmBHD  Belfast City-ORD Chicago O'Hare Intl
26h 00m1 stop London Heathrow
$937British Airways
Thu, Nov 5 - Mon, Nov 9

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British Airways flights from Chicago to Belfast

Our best British Airways deals on Chicago to Belfast flight tickets
British Airways
Nov 15
ORD5:10 pmChicago O'Hare Intl
11h 10m
1 stop
BHD10:20 amBelfast City
Nov 19
BHD7:40 amBelfast City
12h 05m
1 stop
ORD1:45 pmChicago O'Hare Intl
$886
British Airways
Sep 22
ORD5:00 pmChicago O'Hare Intl
11h 45m
1 stop
BHD10:45 amBelfast City
Sep 29
BHD9:40 amBelfast City
12h 15m
1 stop
ORD3:55 pmChicago O'Hare Intl
$920
British Airways
Nov 5
ORD5:10 pmChicago O'Hare Intl
11h 10m
1 stop
BHD10:20 amBelfast City
Nov 9
BHD5:45 pmBelfast City
26h 00m
1 stop
ORD1:45 pmChicago O'Hare Intl
$937

KLM flights from Chicago to Belfast

Our best KLM deals on Chicago to Belfast flight tickets
KLM
Nov 5
MDW12:27 pmChicago Midway
14h 43m
2 stops
BHD9:10 amBelfast City
Nov 9
BHD5:20 pmBelfast City
28h 54m
2 stops
MDW4:14 pmChicago Midway
$969
KLM
Sep 16
MDW7:01 pmChicago Midway
15h 54m
2 stops
BHD4:55 pmBelfast City
Sep 20
BHD9:45 amBelfast City
18h 59m
2 stops
MDW10:44 pmChicago Midway
$1,567

momondo Fare Finder

 
Customize your flight search to find flights from Chicago to Belfast 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 10, 2026.
Use the filters below to find and compare flights from Chicago to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Thu 11/5

6:30 pm-7:50 pm

2 stops19h 20m

Belfast Intl

Sun 11/8

7:50 am-8:20 pm

3 stops42h 30m

$757

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Sat 9/12

7:25 pm-10:40 pm

2 stops21h 15m

Belfast Intl

Fri 9/18

9:10 pm-7:48 pm

2 stops28h 38m

$864

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Wed 9/16

9:55 am-2:30 pm

2 stops22h 35m

Belfast City

Sun 9/20

7:00 am-1:21 pm

3 stops36h 21m

$866

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Thu 11/5

6:30 pm-8:30 pm

2 stops20h 00m

Belfast City

Sun 11/8

7:30 am-5:20 pm

2 stops15h 50m

$871
Quickest round-trip

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Sun 11/15

5:10 pm-10:20 am

1 stop11h 10m

Belfast City

Thu 11/19

7:40 am-1:45 pm

1 stop12h 05m

$886

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Sat 9/12

7:25 pm-10:40 pm

2 stops21h 15m

Belfast Intl

Sun 9/20

9:10 pm-8:12 pm

3 stops29h 02m

$892

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Sat 9/12

10:25 pm-10:40 pm

2 stops18h 15m

Belfast Intl

Fri 9/18

8:15 pm-10:15 am

3 stops44h 00m

$895

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Sat 9/12

7:25 pm-10:40 pm

2 stops21h 15m

Belfast Intl

Sun 9/20

7:00 am-12:35 pm

2 stops35h 35m

$896

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Wed 9/16

3:45 pm-5:05 pm

2 stops19h 20m

Belfast Intl

Sun 9/20

9:10 pm-8:12 pm

3 stops29h 02m

$899

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Thu 11/5

5:10 pm-10:20 am

1 stop11h 10m

Belfast City

Mon 11/9

5:45 pm-1:45 pm

1 stop26h 00m

$937

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Chicago to Belfast

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 to Belfast?

British Airways and Delta are the most popular carriers operating from Chicago to Belfast

Cheap Chicago to Belfast flight deals and tips

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

Fastest flight time

16h 32m

Direct flights

None
The fastest flight from Chicago to Belfast takes 16h 32m
There are no direct flights from Chicago to Belfast. There are no popular flight routes from Chicago to Belfast.
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Frequently asked questions about flying from Chicago to Belfast

  • How far is Chicago to Belfast by plane?

    Chicago and Belfast are 3636.7 mi apart from one another. Typically, this will take 16h 32m by plane in normal conditions.

  • When did momondo last update prices for flights from Chicago to Belfast?

    Prices for flights from Chicago to Belfast were last updated today.

  • How many operators does momondo search for flights from Chicago to Belfast?

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Belfast.

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

    The travel and health documents required for your trip to Belfast 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 Belfast. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Chicago to Belfast

Compare and see reviews for airlines that fly from Chicago to Belfast with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $629Free CancellationRating
6.7
8,153 reviews
Search British Airways flights

Why use momondo?

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

It is quick and easy to find Chicago to Belfast flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Belfast that suits you.

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

Flights from Chicago to Belfast 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 Chicago to Belfast?

Once all potential Chicago to Belfast flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Chicago to Belfast 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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Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast
Belfast Intl Airport
Belfast City Airport