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$274+ Cheap flights from Chicago (CHI) to Belfast

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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BHD
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
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Find flight deals from Chicago to Belfast

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 October 14, 2025.

This Mytrip deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:30 pmORD - BFS
2 stops19h 55mMultiple Airlines
Thu 12/47:05 amBFS - ORD
2 stops16h 15mMultiple Airlines
Deal found 10/13$604
This Mytrip deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/286:30 pmORD - BFS
2 stops14h 40mMultiple Airlines
Fri 12/58:05 amBFS - ORD
2 stops15h 15mMultiple Airlines
Deal found 10/14$610
This Mytrip deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/102:31 pmORD - BFS
3 stops23h 44mMultiple Airlines
Tue 11/259:25 amBFS - ORD
3 stops35h 35mMultiple Airlines
Deal found 10/13$625
This American Airlines deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/123:08 pmORD - BHD
2 stops13h 07mAmerican Airlines
Wed 11/199:15 amBHD - ORD
1 stop12h 10mAmerican Airlines
Deal found 10/13$638
This British Airways deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:10 pmORD - BHD
1 stop11h 20mBritish Airways
Wed 5/66:50 amBHD - ORD
1 stop15h 05mBritish Airways
Deal found 10/14$651
This British Airways deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:10 pmORD - BHD
1 stop11h 20mBritish Airways
Mon 5/47:30 pmBHD - ORD
1 stop24h 20mBritish Airways
Deal found 10/14$653
This Air France deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/124:25 pmORD - BHD
1 stop18h 25mMultiple Airlines
Wed 11/196:30 amBHD - ORD
1 stop13h 50mMultiple Airlines
Deal found 10/13$655
This Mytrip deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:30 pmORD - BFS
2 stops17h 25mMultiple Airlines
Sun 12/79:25 amBFS - ORD
2 stops13h 55mMultiple Airlines
Deal found 10/12$659
This Mytrip deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:30 pmORD - BFS
2 stops20h 10mMultiple Airlines
Wed 11/197:20 amBFS - ORD
2 stops16h 00mMultiple Airlines
Deal found 10/13$661
This Delta deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:25 pmORD - BHD
1 stop18h 25mDelta
Thu 5/76:30 amBHD - ORD
1 stop13h 50mDelta
Deal found 10/14$672
This Mytrip deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:30 pmORD - BHD
2 stops18h 30mMultiple Airlines
Sun 12/77:25 amBHD - ORD
2 stops15h 55mMultiple Airlines
Deal found 10/12$674
This Delta deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/304:25 pmORD - BHD
1 stop18h 25mDelta
Fri 5/86:30 amBHD - ORD
2 stops21h 06mDelta
Deal found 10/14$677

Cheap 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 October 14, 2025.

Round-trip from

$604
(Mytrip)

One-way from

$286
(Kiwi.com)
From Chicago (CHI) to Belfast
Search Deals
One-way flight from Chicago (CHI) to Belfast
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated October 14, 2025.
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

Thu 11/27

6:30 pm-8:25 pm

2 stops19h 55m

Belfast Intl

Thu 12/4

7:05 am-5:20 pm

2 stops16h 15m

$604

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 11/28

6:30 pm-3:10 pm

2 stops14h 40m

Belfast Intl

Fri 12/5

8:05 am-5:20 pm

2 stops15h 15m

$610

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 11/10

2:31 pm-8:15 pm

3 stops23h 44m

Belfast Intl

Tue 11/25

9:25 am-3:00 pm

3 stops35h 35m

$625

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 2/4

5:10 pm-10:15 am

1 stop11h 05m

Belfast City

Wed 2/11

11:25 am-6:45 pm

1 stop13h 20m

$639

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 11/12

3:08 pm-10:15 am

2 stops13h 07m

Belfast City

Wed 11/19

6:35 am-5:52 pm

2 stops17h 17m

$648

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 12/2

5:10 pm-10:30 am

1 stop11h 20m

Belfast City

Thu 5/7

9:35 am-6:15 pm

1 stop14h 40m

$651

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 12/2

5:10 pm-10:30 am

1 stop11h 20m

Belfast City

Wed 5/6

6:50 am-3:55 pm

1 stop15h 05m

$651

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 12/2

5:10 pm-10:30 am

1 stop11h 20m

Belfast City

Mon 5/4

7:30 pm-1:50 pm

1 stop24h 20m

$653

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 12/3

6:30 pm-5:55 pm

2 stops17h 25m

Belfast Intl

Sun 12/7

9:25 am-5:20 pm

2 stops13h 55m

$659

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 3/1

5:10 pm-1:55 pm

1 stop14h 45m

Belfast City

Wed 9/30

11:30 am-6:15 pm

1 stop12h 45m

$660

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

Showing 1-10 of 50 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 round-trip 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

What is the cheapest time of day to fly from CHI to BFS?

Find hourly flight availability from Chicago to Belfast. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 14, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 36% on flights from Chicago to Belfast by exploring options for tickets in the morning.

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. 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 Belfast. Reviews last updated October 14, 2025.
Peruse reviews from past customers who have flown with British Airways from Chicago to Belfast to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,456 reviews

Entertainment

6.4

Boarding

6.9

Overall

6.7

Food

6.3

Crew

7.6

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.
British Airways
6.7
Okay
7,456 reviews
British Airways
6.7
Okay
7,456 reviews

Entertainment

6.4

Boarding

6.9

Overall

6.7

Food

6.3

Crew

7.6

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.

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?

    There are many flights that can get you from Chicago to Belfast in 11h 05m. Fly via British Airways, American Airlines, or KLM to get the fastest option. There are 3644 mi between Chicago and Belfast. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Chicago to Belfast round-trip?

    British Airways, at $577, was found to be the cheapest airline from Chicago to Belfast..

  • What are the cheapest airlines to fly from Chicago to Belfast one-way?

    The cheapest airline one-way is British Airways, with whom users have recently found tickets for as low as $374. However, be on the lookout for offers from KLM and Delta, as they are both options that can get you from Chicago to Belfast for a low price.

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

    Most travelers choose Chicago O'Hare Intl - Belfast Intl, Chicago O'Hare Intl - Belfast City or Chicago Midway - Belfast City when deciding on the best route from Chicago to Belfast.

  • 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 vacation 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
O'Hare Intl to Belfast City flights
St. Louis to Belfast Intl flights
St. Louis to Belfast City flights
Midway to Belfast City flights

Top airline flying from Chicago to Belfast

Discover the top airline that operate flights from Chicago to Belfast. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$577Average$720FlexibilityNo cancel feeOn-time70%

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