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Cheap flights from Belfast Intl Airport to Chicago from £349

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 29/4. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — CHI
23 May — 30 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast Intl to Chicago

Enter your travel dates to find the best prices.

Cheapest flights from Belfast Intl to Chicago
Explore the most affordable flight options available from Belfast Intl to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 April 2026.

Tue 2/607:35
BFS
-
ORD
3 stops40h 40m
Multiple Airlines
Tue 9/609:55
ORD
-
BFS
2 stops24h 25m
Multiple Airlines
Deal found 17/4£659
Wed 3/607:00
BFS
-
ORD
3 stops36h 05m
Multiple Airlines
Wed 10/609:55
ORD
-
BFS
2 stops25h 10m
Multiple Airlines
Deal found 19/4£667
Thu 11/608:20
BFS
-
ORD
3 stops30h 40m
Multiple Airlines
Tue 16/609:55
ORD
-
BFS
2 stops27h 45m
Multiple Airlines
Deal found 18/4£681
Sat 6/606:55
BFS
-
ORD
3 stops36h 15m
Multiple Airlines
Sat 13/609:55
ORD
-
BFS
3 stops27h 00m
Multiple Airlines
Deal found 22/4£736
Mon 1/606:40
BFS
-
ORD
2 stops21h 25m
Multiple Airlines
Mon 8/609:55
ORD
-
BFS
2 stops24h 20m
Multiple Airlines
Deal found 17/4£775

Find flight deals from Belfast Intl to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Belfast Intl (BFS) to Chicago (CHI). 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 23 April 2026.

Round-trip from

£667

One-way from

£349
3/6-10/6
  • 3/6-10/6
  • 5 total stops
  • 61h 15m total
  • Belfast to Chicago
Search Deals
29/4
  • 29/4
  • 3 total stops
  • 44h 04m total
  • Belfast to Chicago
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast Intl to Chicago 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 23 April 2026.
Use the filters below to find and compare flights from Belfast Intl Airport to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 3/6

07:00-13:05

3 stops36h 05m

Chicago O'Hare Intl

Wed 10/6

09:55-17:05

2 stops25h 10m

£667

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 11/6

08:20-09:00

3 stops30h 40m

Chicago O'Hare Intl

Tue 16/6

09:55-19:40

2 stops27h 45m

£681
Fastest return journey

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 2/6

08:20-22:14

2 stops19h 54m

Chicago O'Hare Intl

Tue 9/6

09:55-16:20

2 stops24h 25m

£713

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 6/6

06:55-13:10

3 stops36h 15m

Chicago O'Hare Intl

Sat 13/6

09:55-18:55

3 stops27h 00m

£736

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 1/6

06:40-22:05

2 stops21h 25m

Chicago O'Hare Intl

Mon 8/6

09:55-16:15

2 stops24h 20m

£775

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 5/6

08:20-19:25

2 stops17h 05m

Chicago O'Hare Intl

Fri 12/6

09:55-21:50

2 stops29h 55m

£836
Cheapest one-way
Fastest single journey

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Wed 29/4

09:55-23:59

3 stops44h 04m

£349

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sun 26/7

21:40-15:10

3 stops47h 30m

£491

Flights are sorted by cheapest return flights first.

Deals found on 22/4

Sorted by cheapest first

Best time to book a flight from Belfast Intl to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Belfast Intl 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 Belfast Intl Airport to Chicago
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chicago. Reviews last updated 23 April 2026.
See what other customers who have flown with British Airways from Belfast Intl Airport to Chicago have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,906 reviews
Check prices

Entertainment

6.4

Crew

7.7

Boarding

6.9

Comfort

6.8

Food

6.4

Overall

6.7

Reviews

1 / 20
6.0
Good

Roxanne,Sept 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.
British Airways
6.7
Okay
7,906 reviews
British Airways
6.7
Okay
7,906 reviews
Check prices

Entertainment

6.4

Crew

7.7

Boarding

6.9

Comfort

6.8

Food

6.4

Overall

6.7

Reviews

1 / 20
6.0
Good

Roxanne,Sept 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.

Related info for your journey

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

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

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Belfast Intl to Chicago

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

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Belfast Intl to Chicago.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Belfast Intl to Chicago, users can toggle the no change fees filter when performing a flight search.

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