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Cheap flights from Chicago O'Hare Intl Airport to Belfast from £246

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 Belfast departing on 9/1. 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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Find the cheapest flights from Chicago O'Hare Intl Airport to Belfast

Cheap return flights

Logo
19:30 - 18:55ORD-BFS
18h 25m2 stops
Logo
07:10 - 17:20BFS-ORD
16h 10m2 stops
£468
Find Deal
dim., 26 oct. - dim., 2 nov.
Logo
15:55 - 18:55ORD-BFS
22h 00m3 stops
Logo
07:10 - 16:20BFS-ORD
15h 10m2 stops
£580
Find Deal
dim., 26 oct. - dim., 2 nov.
Logo
07:15 - 18:55ORD-BFS
30h 40m3 stops
Logo
07:55 - 09:22BFS-ORD
31h 27m3 stops
£717
Find Deal
dim., 26 oct. - dim., 2 nov.
Logo
08:40 - 22:25ORD-BFS
31h 45m3 stops
Logo
05:45 - 15:00BFS-ORD
39h 15m3 stops
£815
Find Deal
mer., 24 sept. - sam., 27 sept.
Logo
12:00 - 18:35ORD-BFS
24h 35m2 stops
Logo
05:45 - 15:00BFS-ORD
39h 15m3 stops
£868
Find Deal
mer., 24 sept. - sam., 27 sept.
Logo
12:00 - 18:35ORD-BFS
24h 35m2 stops
Logo
21:40 - 15:04BFS-ORD
23h 24m2 stops
£949
Find Deal
mer., 24 sept. - sam., 27 sept.

momondo Fare Finder

 
Customise your flight search to find flights from Chicago O'Hare Intl Airport to Belfast Intl Airport 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 12 septembre 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

dim. 26/10

19:30-18:55

2 stops18h 25m

Belfast Intl

dim. 2/11

07:10-17:20

2 stops16h 10m

£468

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

dim. 26/10

15:55-18:55

3 stops22h 00m

Belfast Intl

dim. 2/11

07:10-16:20

2 stops15h 10m

£580

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

dim. 26/10

07:15-18:55

3 stops30h 40m

Belfast Intl

dim. 2/11

07:55-09:22

3 stops31h 27m

£717

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

mer. 24/9

08:40-22:25

3 stops31h 45m

Belfast Intl

sam. 27/9

05:45-15:00

3 stops39h 15m

£815

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

mer. 24/9

12:00-18:35

2 stops24h 35m

Belfast Intl

sam. 27/9

05:45-15:00

3 stops39h 15m

£868

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

mer. 24/9

12:00-18:35

2 stops24h 35m

Belfast Intl

sam. 27/9

21:40-15:04

2 stops23h 24m

£949

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

ven. 9/1

08:36-10:05

2 stops19h 29m

£246

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

lun. 15/12

10:18-20:10

2 stops27h 52m

£262

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

ven. 9/1

20:15-22:20

3 stops44h 05m

£270

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

lun. 15/12

11:52-20:10

3 stops26h 18m

£300

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to Belfast from

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

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 typical price of a round-trip flight between Chicago O'Hare Intl Airport and Belfast Intl Airport?

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

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to Belfast Intl Airport 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 Belfast Intl Airport (ORD to BFS) flight deals and tips

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

Direct flights

None
There are no direct flights from Chicago O'Hare Intl Airport to Belfast Intl Airport. There are no popular flight routes from Chicago O'Hare Intl Airport to Belfast Intl Airport.
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  • How far is Chicago O'Hare Intl to Belfast Intl by plane?

    Chicago O'Hare Intl and Belfast Intl are 3629.9 mi apart from one another. Typically, this will take 18h 25m by plane in normal conditions.

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

    Prices for flights from Chicago O'Hare Intl Airport to Belfast Intl Airport are refreshed on a daily basis.

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

    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 O'Hare Intl Airport to Belfast Intl Airport.

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

    The travel and health documents you'll need for your trip to Belfast Intl Airport 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 Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Ballymena
Newry
Armagh
Cookstown
Dungannon
Portadown

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?

Yes. momondo allows you to filter the results for Chicago to Belfast flights to just show those with flexible booking policies.

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?

Price alerts on flights to Belfast from Chicago are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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dim. 12/10
dim. 19/10
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