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Cheap flights from Chicago to Belfast from £236

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 12/9. 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
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Find the cheapest flights from Chicago to Belfast

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
19:25 - 21:10
ORD
-
BFS
19h 45m
2 stops
Multiple Airlines Logo
21:05 - 18:15
BFS
-
ORD
27h 10m
3 stops
£612Multiple Airlines
Wed, 7 Oct - Wed, 21 Oct
Multiple Airlines Logo
19:25 - 23:10
ORD
-
BFS
21h 45m
3 stops
Multiple Airlines Logo
21:05 - 18:15
BFS
-
ORD
27h 10m
3 stops
£632Multiple Airlines
Wed, 7 Oct - Wed, 21 Oct
Multiple Airlines Logo
17:35 - 18:50
ORD
-
BFS
19h 15m
2 stops
Multiple Airlines Logo
21:35 - 16:58
BFS
-
ORD
25h 23m
2 stops
£638Multiple Airlines
Sun, 13 Sep - Mon, 21 Sep
British Airways Logo
17:00 - 13:35
ORD
-
BHD
14h 35m
1 stop
British Airways Logo
06:30 - 15:55
BHD
-
ORD
15h 25m
1 stop
£656British Airways
Wed, 7 Oct - Wed, 21 Oct
British Airways Logo
21:50 - 18:40
ORD
-
BHD
14h 50m
1 stop
British Airways Logo
06:45 - 13:50
BHD
-
ORD
13h 05m
1 stop
£670British Airways
Sun, 1 Nov - Fri, 20 Nov
American Airlines Logo
15:08 - 10:15
ORD
-
BHD
13h 07m
2 stops
American Airlines Logo
06:35 - 19:15
BHD
-
ORD
18h 40m
1 stop
£671American Airlines
Wed, 4 Nov - Wed, 18 Nov
Delta Logo
16:20 - 09:20
ORD
-
BHD
11h 00m
1 stop
Delta Logo
17:30 - 14:15
BHD
-
ORD
26h 45m
1 stop
£684Delta
Sun, 4 Oct - Mon, 19 Oct
Delta Logo
15:50 - 16:50
ORD
-
BHD
19h 00m
2 stops
Delta Logo
17:20 - 14:25
BHD
-
ORD
27h 05m
1 stop
£687Delta
Sun, 1 Nov - Wed, 18 Nov
KLM Logo
13:05 - 17:50
MDW
-
BHD
22h 45m
2 stops
KLM Logo
17:20 - 16:50
BHD
-
MDW
29h 30m
2 stops
£732KLM
Sat, 24 Oct - Wed, 4 Nov
KLM Logo
13:27 - 09:20
MDW
-
BHD
13h 53m
2 stops
KLM Logo
09:50 - 22:36
BHD
-
MDW
18h 46m
2 stops
£1,366KLM
Fri, 14 Aug - Thu, 20 Aug

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British Airways flights from Chicago to Belfast

Our best British Airways deals on Chicago to Belfast flight tickets
British Airways
7 Oct
ORD17:00Chicago O'Hare Intl
14h 35m
1 stop
BHD13:35Belfast City
21 Oct
BHD06:30Belfast City
15h 25m
1 stop
ORD15:55Chicago O'Hare Intl
£656
British Airways
1 Nov
ORD21:50Chicago O'Hare Intl
14h 50m
1 stop
BHD18:40Belfast City
20 Nov
BHD06:45Belfast City
13h 05m
1 stop
ORD13:50Chicago O'Hare Intl
£670
British Airways
7 Oct
ORD16:01Chicago O'Hare Intl
13h 59m
2 stops
BHD12:00Belfast City
21 Oct
BHD11:35Belfast City
12h 40m
1 stop
ORD18:15Chicago O'Hare Intl
£673

American Airlines flights from Chicago to Belfast

Our best American Airlines deals on Chicago to Belfast flight tickets
American Airlines
4 Nov
ORD15:08Chicago O'Hare Intl
13h 07m
2 stops
BHD10:15Belfast City
18 Nov
BHD06:35Belfast City
18h 40m
1 stop
ORD19:15Chicago O'Hare Intl
£671
American Airlines
22 Jul
ORD18:00Chicago O'Hare Intl
12h 00m
1 stop
BHD12:00Belfast City
29 Jul
BHD06:30Belfast City
14h 30m
1 stop
ORD15:00Chicago O'Hare Intl
£779
American Airlines
22 Jul
ORD18:00Chicago O'Hare Intl
12h 00m
1 stop
BHD12:00Belfast City
29 Jul
BHD11:35Belfast City
16h 25m
2 stops
ORD22:00Chicago O'Hare Intl
£787

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 24 June 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 return flight

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 7/10

19:25-21:10

2 stops19h 45m

Belfast Intl

Wed 21/10

21:05-18:15

3 stops27h 10m

£612

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 7/10

19:25-23:10

3 stops21h 45m

Belfast Intl

Wed 21/10

21:05-18:15

3 stops27h 10m

£632

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 13/9

17:35-18:50

2 stops19h 15m

Belfast Intl

Mon 21/9

21:35-16:58

2 stops25h 23m

£638

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 7/10

17:00-13:35

1 stop14h 35m

Belfast City

Wed 21/10

06:30-15:55

1 stop15h 25m

£656
Fastest return journey

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 1/11

21:50-18:40

1 stop14h 50m

Belfast City

Fri 20/11

06:45-13:50

1 stop13h 05m

£670

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 4/11

15:08-10:15

2 stops13h 07m

Belfast City

Wed 18/11

06:35-19:15

1 stop18h 40m

£671

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 4/10

16:20-09:20

1 stop11h 00m

Belfast City

Mon 19/10

17:30-14:15

1 stop26h 45m

£684

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 1/11

15:50-16:50

2 stops19h 00m

Belfast City

Wed 18/11

17:20-14:25

1 stop27h 05m

£687

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Sat 24/10

13:05-17:50

2 stops22h 45m

Belfast City

Wed 4/11

17:20-16:50

2 stops29h 30m

£732

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Fri 14/8

13:27-09:20

2 stops13h 53m

Belfast City

Thu 20/8

09:50-22:36

2 stops18h 46m

£1,366

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Belfast from

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?

Delta and KLM 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

12h 15m

Direct flights

None
The fastest flight from Chicago to Belfast takes 12h 15m
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?

    The distance between Chicago and Belfast is about 3636.7 mi. In terms of flight time, this usually takes a little over 12h 15m.

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

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

  • 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 you'll need for your trip to Belfast 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 Belfast. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

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 Chicago to Belfast for you.

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

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

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

momondo helps you find the best flight between Chicago and Belfast by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Chicago to Belfast 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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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