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Cheap flights from Chicago to Belfast from £174

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/4. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BHD
13 Mar — 20 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Chicago to Belfast

Enter your travel dates to find the best prices.

Cheapest flights from Chicago to Belfast
Explore the most affordable flight options available from Chicago to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 February 2026.

Tue 24/218:30
ORD
-
BFS
2 stops12h 55m
Multiple Airlines
Tue 3/306:30
BFS
-
ORD
2 stops16h 50m
Multiple Airlines
Deal found 10/2£466
Tue 24/220:35
ORD
-
BHD
1 stop12h 15m
American Airlines
Tue 3/308:45
BHD
-
ORD
1 stop12h 40m
American Airlines
Deal found 10/2£480
Sun 11/1018:35
ORD
-
BHD
2 stops14h 00m
British Airways
Tue 20/1009:40
BHD
-
ORD
1 stop12h 15m
British Airways
Deal found 9/2£483
Wed 11/218:25
ORD
-
BHD
1 stop16h 10m
American Airlines
Wed 4/306:35
BHD
-
ORD
1 stop16h 25m
American Airlines
Deal found 9/2£487
Tue 24/214:12
ORD
-
BHD
2 stops20h 38m
Multiple Airlines
Tue 3/306:30
BHD
-
ORD
2 stops17h 23m
Multiple Airlines
Deal found 10/2£508
Tue 10/220:45
ORD
-
BHD
1 stop14h 00m
American Airlines
Sun 15/206:30
BHD
-
ORD
1 stop16h 30m
American Airlines
Deal found 8/2£517
Thu 17/913:59
ORD
-
BHD
2 stops14h 11m
British Airways
Mon 28/919:35
BHD
-
ORD
2 stops27h 45m
British Airways
Deal found 9/2£522
Thu 12/220:35
ORD
-
BHD
1 stop11h 25m
American Airlines
Wed 18/206:35
BHD
-
ORD
2 stops17h 23m
American Airlines
Deal found 10/2£524
Sun 11/1014:20
ORD
-
BFS
2 stops25h 30m
Multiple Airlines
Tue 20/1006:45
BFS
-
ORD
3 stops37h 45m
Multiple Airlines
Deal found 9/2£570
Wed 25/310:55
ORD
-
BFS
3 stops24h 15m
Multiple Airlines
Wed 1/420:10
BFS
-
ORD
3 stops27h 40m
Multiple Airlines
Deal found 8/2£620
Tue 2/609:55
ORD
-
BFS
2 stops23h 20m
Multiple Airlines
Tue 16/621:25
BFS
-
ORD
3 stops30h 00m
Multiple Airlines
Deal found 9/2£640
Wed 8/418:07
MDW
-
BHD
2 stops16h 48m
Delta
Wed 15/409:50
BHD
-
MDW
2 stops18h 38m
Delta
Deal found 11/2£670

Find flight deals from Chicago to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 February 2026.

Round-trip from

£466

One-way from

£174
24/2-3/3
  • 24/2-3/3
  • 4 total stops
  • 29h 45m total
  • Chicago to Belfast
Search Deals
26/4
  • 26/4
  • 2 total stops
  • 20h 25m total
  • Chicago to Belfast
Search Deals

Cheapflights 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, Cheapflights users made 858,174 searches. Data last updated 11 February 2026.
Use the filters below to find and compare flights from Chicago to Belfast that are best for you.

Fly from

Chicago

Fly to

Belfast

Route

Depart

Return

Price

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Tue 24/2

18:30-13:25

2 stops12h 55m

Belfast Intl

Tue 3/3

06:30-17:20

2 stops16h 50m

£466

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 24/2

20:35-14:50

1 stop12h 15m

Belfast City

Tue 3/3

08:45-15:25

1 stop12h 40m

£480

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 24/2

14:12-16:50

2 stops20h 38m

Belfast City

Tue 3/3

06:30-17:53

2 stops17h 23m

£508

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 18/3

18:54-16:30

2 stops16h 36m

Belfast City

Sun 22/3

20:25-15:43

2 stops48h 18m

£560

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 4/3

17:10-10:15

1 stop11h 05m

Belfast City

Sun 8/3

10:40-14:50

1 stop33h 10m

£584

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 25/3

10:55-16:10

3 stops24h 15m

Belfast Intl

Wed 1/4

20:10-17:50

3 stops27h 40m

£620

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Tue 2/6

09:55-15:15

2 stops23h 20m

Belfast Intl

Tue 16/6

21:25-21:25

3 stops30h 00m

£640

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Wed 8/4

18:07-16:55

2 stops16h 48m

Belfast City

Wed 15/4

09:50-22:28

2 stops18h 38m

£670

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 27/3

12:50-22:00

3 stops28h 10m

Belfast Intl

Fri 3/4

19:55-19:50

3 stops29h 55m

£683

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 29/5

08:45-16:30

3 stops25h 45m

Belfast Intl

Tue 30/6

06:00-14:30

3 stops38h 30m

£742

Flights are sorted by cheapest return flights first.

Deals found on 11/2

Showing 1-10 of 26 results
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Best time to book a flight from Chicago to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Chicago with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago to Belfast
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Chicago to Belfast?

    Departing from Chicago to Belfast will take you 12h 15m. There are 3644 mi between Chicago and Belfast. This flight may include one or multiple stops.

  • What are the most popular routes from Chicago to Belfast?

    The most popular route from Chicago to Belfast is Chicago O'Hare Intl - Belfast Intl. You may also consider Chicago O'Hare Intl - Belfast City or Chicago Midway - Belfast City.

  • Can I find deals for flights from Chicago to Belfast that include hotel bookings?

    Yes. In addition to deals on Chicago to Belfast flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Belfast?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Belfast.

  • Can I find deals for business class flights from Chicago to Belfast?

    Yes. Cheapflights offers flight deals from Chicago to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Chicago to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Belfast Intl flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Chicago to Belfast?

Cheapflights helps you search for flights from Chicago to Belfast via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Chicago to Belfast?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Chicago to Belfast for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Chicago to Belfast with no change fees?

Certainly. Search results for flights to Belfast from Chicago shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Chicago to Belfast become cheaper?

Not ready to book yet? You can track prices for flights from Chicago to Belfast on Cheapflights with our Price Alert feature and get notified when better prices are available.

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