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Cheap flights from Chicago O'Hare Intl Airport to Belfast from £171

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 17/4. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
19:25 - 23:10
ORD
-
BFS
21h 45m
2 stops
Multiple Airlines Logo
07:00 - 21:25
BFS
-
ORD
20h 25m
2 stops
£421Multiple Airlines
Tue, 28 Apr - Wed, 6 May
Multiple Airlines Logo
19:30 - 20:15
ORD
-
BFS
19h 45m
2 stops
Multiple Airlines Logo
22:20 - 16:00
BFS
-
ORD
46h 40m
3 stops
£484Multiple Airlines
Mon, 9 Mar - Mon, 16 Mar
Multiple Airlines Logo
19:30 - 16:00
ORD
-
BFS
15h 30m
2 stops
Multiple Airlines Logo
06:30 - 18:20
BFS
-
ORD
16h 50m
2 stops
£492Multiple Airlines
Tue, 10 Mar - Tue, 17 Mar
Multiple Airlines Logo
19:30 - 21:30
ORD
-
BFS
21h 00m
3 stops
Multiple Airlines Logo
22:20 - 16:00
BFS
-
ORD
46h 40m
3 stops
£508Multiple Airlines
Mon, 9 Mar - Mon, 16 Mar
Multiple Airlines Logo
19:30 - 20:15
ORD
-
BFS
19h 45m
2 stops
Multiple Airlines Logo
06:30 - 18:20
BFS
-
ORD
16h 50m
2 stops
£533Multiple Airlines
Mon, 9 Mar - Mon, 16 Mar
Multiple Airlines Logo
19:30 - 21:30
ORD
-
BFS
21h 00m
3 stops
Multiple Airlines Logo
06:30 - 18:20
BFS
-
ORD
16h 50m
2 stops
£536Multiple Airlines
Mon, 9 Mar - Mon, 16 Mar
Multiple Airlines Logo
19:30 - 16:00
ORD
-
BFS
15h 30m
2 stops
Multiple Airlines Logo
13:55 - 16:00
BFS
-
ORD
31h 05m
3 stops
£555Multiple Airlines
Tue, 10 Mar - Tue, 17 Mar
Multiple Airlines Logo
07:15 - 15:10
ORD
-
BFS
25h 55m
3 stops
Multiple Airlines Logo
21:15 - 15:00
BFS
-
ORD
47h 45m
3 stops
£560Multiple Airlines
Fri, 6 Feb - Mon, 9 Feb
Multiple Airlines Logo
19:30 - 21:50
ORD
-
BFS
21h 20m
3 stops
Multiple Airlines Logo
13:55 - 16:00
BFS
-
ORD
31h 05m
3 stops
£605Multiple Airlines
Tue, 10 Mar - Tue, 17 Mar
Multiple Airlines Logo
18:50 - 22:00
ORD
-
BFS
21h 10m
2 stops
Multiple Airlines Logo
22:20 - 15:00
BFS
-
ORD
46h 40m
3 stops
£606Multiple Airlines
Fri, 6 Feb - Mon, 9 Feb

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 25 January 2026.
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

Tue 28/4

19:25-23:10

2 stops21h 45m

Belfast Intl

Wed 6/5

07:00-21:25

2 stops20h 25m

£421

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 9/3

19:30-20:15

2 stops19h 45m

Belfast Intl

Mon 16/3

22:20-16:00

3 stops46h 40m

£484

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Tue 10/3

19:30-16:00

2 stops15h 30m

Belfast Intl

Tue 17/3

06:30-18:20

2 stops16h 50m

£492

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 9/3

19:30-21:30

3 stops21h 00m

Belfast Intl

Mon 16/3

22:20-16:00

3 stops46h 40m

£508

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 9/3

19:30-20:15

2 stops19h 45m

Belfast Intl

Mon 16/3

06:30-18:20

2 stops16h 50m

£533

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 9/3

19:30-21:30

3 stops21h 00m

Belfast Intl

Mon 16/3

06:30-18:20

2 stops16h 50m

£536

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Tue 10/3

19:30-16:00

2 stops15h 30m

Belfast Intl

Tue 17/3

13:55-16:00

3 stops31h 05m

£555

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 6/2

07:15-15:10

3 stops25h 55m

Belfast Intl

Mon 9/2

21:15-15:00

3 stops47h 45m

£560

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Tue 10/3

19:30-21:50

3 stops21h 20m

Belfast Intl

Tue 17/3

13:55-16:00

3 stops31h 05m

£605

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 6/2

18:50-22:00

2 stops21h 10m

Belfast Intl

Mon 9/2

22:20-15:00

3 stops46h 40m

£606

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

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

Fastest flight time

11h 45m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to Belfast Intl Airport takes 11h 45m
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.
Search flight deals

  • 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 11h 45m 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.

  • How do I get Price Alerts for flights from Chicago O'Hare Intl Airport to Belfast Intl Airport?

    Confirm your travel details to search for the latest offers for flights from Chicago O'Hare Intl Airport to Belfast Intl Airport. 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 Chicago O'Hare Intl Airport to Belfast Intl Airport with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

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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