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Cheap flights from Chicago to Belfast from £232

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 13/11. 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 to Belfast

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
19:25 - 16:20ORD  Chicago O'Hare Intl-BFS Belfast Intl
14h 55m2 stops Reykjavik Keflavik Intl Glasgow Intl
Multiple Airlines Logo
06:40 - 18:15BFS  Belfast Intl-ORD Chicago O'Hare Intl
41h 35m3 stops London Stansted Milan Malpensa Reykjavik Keflavik Intl
£563Multiple Airlines
Tue, 22 Sep - Tue, 29 Sep
Multiple Airlines Logo
19:25 - 19:30ORD  Chicago O'Hare Intl-BFS Belfast Intl
18h 05m2 stops Reykjavik Keflavik Intl Manchester
Multiple Airlines Logo
21:10 - 21:25BFS  Belfast Intl-ORD Chicago O'Hare Intl
30h 15m3 stops Newcastle upon Tyne Gdansk Rebiechowo Reykjavik Keflavik Intl
£569Multiple Airlines
Thu, 24 Sep - Thu, 1 Oct
Multiple Airlines Logo
19:25 - 23:20ORD  Chicago O'Hare Intl-BFS Belfast Intl
21h 55m3 stops Reykjavik Keflavik Intl Glasgow Intl London Stansted
Multiple Airlines Logo
06:40 - 18:15BFS  Belfast Intl-ORD Chicago O'Hare Intl
41h 35m3 stops London Stansted Milan Malpensa Reykjavik Keflavik Intl
£584Multiple Airlines
Tue, 22 Sep - Tue, 29 Sep
Multiple Airlines Logo
19:25 - 22:25ORD  Chicago O'Hare Intl-BFS Belfast Intl
21h 00m3 stops Reykjavik Keflavik Intl Manchester Amsterdam Schiphol
Multiple Airlines Logo
21:10 - 21:25BFS  Belfast Intl-ORD Chicago O'Hare Intl
30h 15m3 stops Newcastle upon Tyne Gdansk Rebiechowo Reykjavik Keflavik Intl
£604Multiple Airlines
Thu, 24 Sep - Thu, 1 Oct
Multiple Airlines Logo
19:25 - 19:30ORD  Chicago O'Hare Intl-BFS Belfast Intl
18h 05m2 stops Reykjavik Keflavik Intl Manchester
Multiple Airlines Logo
10:20 - 18:15BFS  Belfast Intl-ORD Chicago O'Hare Intl
13h 55m2 stops Manchester Reykjavik Keflavik Intl
£620Multiple Airlines
Thu, 24 Sep - Thu, 1 Oct
Multiple Airlines Logo
19:25 - 21:50ORD  Chicago O'Hare Intl-BFS Belfast Intl
20h 25m2 stops Reykjavik Keflavik Intl Glasgow Intl
Multiple Airlines Logo
20:25 - 14:15BFS  Belfast Intl-ORD Chicago O'Hare Intl
47h 50m3 stops London Stansted Barcelona-El Prat Amsterdam Schiphol
£632Multiple Airlines
Fri, 25 Sep - Fri, 2 Oct
Multiple Airlines Logo
19:25 - 17:50ORD  Chicago O'Hare Intl-BHD Belfast City
16h 25m2 stops Reykjavik Keflavik Intl Glasgow Intl
Multiple Airlines Logo
07:00 - 19:48BHD  Belfast City-ORD Chicago O'Hare Intl
18h 48m2 stops London Gatwick Toronto Pearson Intl
£634Multiple Airlines
Tue, 22 Sep - Tue, 29 Sep
Multiple Airlines Logo
19:25 - 19:40ORD  Chicago O'Hare Intl-BFS Belfast Intl
18h 15m2 stops Reykjavik Keflavik Intl Glasgow Intl
Multiple Airlines Logo
10:30 - 18:15BFS  Belfast Intl-ORD Chicago O'Hare Intl
13h 45m2 stops Glasgow Intl Reykjavik Keflavik Intl
£637Multiple Airlines
Tue, 22 Sep - Tue, 29 Sep
Multiple Airlines Logo
22:25 - 21:00ORD  Chicago O'Hare Intl-BFS Belfast Intl
16h 35m2 stops Reykjavik Keflavik Intl Glasgow Intl
Multiple Airlines Logo
09:55 - 12:35BFS  Belfast Intl-ORD Chicago O'Hare Intl
32h 40m2 stops London Gatwick Zurich
£645Multiple Airlines
Sun, 27 Sep - Sun, 4 Oct
British Airways Logo
17:10 - 10:20ORD  Chicago O'Hare Intl-BHD Belfast City
11h 10m1 stop London Heathrow
British Airways Logo
07:40 - 13:45BHD  Belfast City-ORD Chicago O'Hare Intl
12h 05m1 stop London Heathrow
£656British Airways
Sun, 15 Nov - Thu, 19 Nov

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British Airways flights from Chicago to Belfast

Our best British Airways deals on Chicago to Belfast flight tickets
British Airways
15 Nov
ORD17:10Chicago O'Hare Intl
11h 10m
1 stop
BHD10:20Belfast City
19 Nov
BHD07:40Belfast City
12h 05m
1 stop
ORD13:45Chicago O'Hare Intl
£656
British Airways
15 Nov
ORD17:10Chicago O'Hare Intl
11h 35m
1 stop
BHD10:45Belfast City
19 Nov
BHD07:40Belfast City
12h 05m
1 stop
ORD13:45Chicago O'Hare Intl
£663
British Airways
22 Sept
ORD17:00Chicago O'Hare Intl
11h 45m
1 stop
BHD10:45Belfast City
29 Sept
BHD09:40Belfast City
12h 15m
1 stop
ORD15:55Chicago O'Hare Intl
£681

KLM flights from Chicago to Belfast

Our best KLM deals on Chicago to Belfast flight tickets
KLM
21 Aug
ORD16:20Chicago O'Hare Intl
18h 35m
1 stop
BHD16:55Belfast City
23 Aug
BHD17:30Belfast City
27h 00m
1 stop
ORD14:30Chicago O'Hare Intl
£899
KLM
21 Aug
ORD12:29Chicago O'Hare Intl
14h 51m
2 stops
BHD09:20Belfast City
23 Aug
BHD17:30Belfast City
27h 00m
1 stop
ORD14:30Chicago O'Hare Intl
£903
KLM
21 Aug
ORD12:29Chicago O'Hare Intl
14h 51m
2 stops
BHD09:20Belfast City
23 Aug
BHD09:50Belfast City
20h 07m
2 stops
ORD23:57Chicago O'Hare Intl
£910

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 13 August 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 Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Tue 22/9

19:25-16:20

2 stops14h 55m

Belfast Intl

Tue 29/9

06:40-18:15

3 stops41h 35m

£563

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Thu 24/9

19:25-19:30

2 stops18h 05m

Belfast Intl

Thu 1/10

21:10-21:25

3 stops30h 15m

£569

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Tue 22/9

19:25-23:20

3 stops21h 55m

Belfast Intl

Tue 29/9

06:40-18:15

3 stops41h 35m

£584

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Thu 24/9

19:25-22:25

3 stops21h 00m

Belfast Intl

Thu 1/10

21:10-21:25

3 stops30h 15m

£604

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Thu 24/9

19:25-19:30

2 stops18h 05m

Belfast Intl

Thu 1/10

10:20-18:15

2 stops13h 55m

£620

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Fri 25/9

19:25-21:50

2 stops20h 25m

Belfast Intl

Fri 2/10

20:25-14:15

3 stops47h 50m

£632

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Tue 22/9

19:25-17:50

2 stops16h 25m

Belfast City

Tue 29/9

07:00-19:48

2 stops18h 48m

£634

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Tue 22/9

19:25-19:40

2 stops18h 15m

Belfast Intl

Tue 29/9

10:30-18:15

2 stops13h 45m

£637

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Sun 27/9

22:25-21:00

2 stops16h 35m

Belfast Intl

Sun 4/10

09:55-12:35

2 stops32h 40m

£645
Fastest return journey

ChicagoBelfast

ORD Chicago O'Hare Intl - BHD Belfast City

ORDBHD

Chicago O'Hare Intl

Sun 15/11

17:10-10:20

1 stop11h 10m

Belfast City

Thu 19/11

07:40-13:45

1 stop12h 05m

£656

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?

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

11h 35m

Direct flights

None
The fastest flight from Chicago to Belfast takes 11h 35m
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 11h 35m.

  • 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