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Cheap flights from Chicago to Belfast from £300

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 20/8. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BHD
5 May — 12 May1
1 adult

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 30 April 2025.

Round-trip from

£475

One-way from

£300

Popular in

May

Cheapest in

September

Average price

£1,000
American Airlines
  • American Airlines
  • 21/8-4/9
  • 2 total stops
  • 27h 35m total
  • Chicago to Belfast
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British Airways
  • British Airways
  • 20/8
  • 2 total stops
  • 19h 25m total
  • Chicago to Belfast
Search Deals
Highest demand for flights based on searches. 26% potential increase in price (£188 potential increase over avg. return price).
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Cheapest flight prices on average. 6% potential price decrease (£30 potential savings vs. average return price).
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Average for round-trip flights in April 2025
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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 30 April 2025.

Mon 5/517:40ORD - BHD
1 stop13h 15mAmerican Airlines
Tue 13/506:35BHD - ORD
1 stop14h 05mAmerican Airlines
Deal found 29/4£444
Thu 21/821:15ORD - BHD
1 stop12h 15mBritish Airways
Thu 4/909:35BHD - ORD
1 stop12h 20mBritish Airways
Deal found 29/4£534
Tue 6/518:15ORD - BHD
2 stops20h 50mKLM
Tue 13/506:30BHD - ORD
2 stops18h 07mKLM
Deal found 29/4£538
Tue 6/517:05ORD - BHD
2 stops22h 00mDelta
Tue 13/506:30BHD - ORD
2 stops16h 59mDelta
Deal found 29/4£541
Sat 14/610:00ORD - BFS
3 stops19h 00mMultiple Airlines
Mon 16/606:10BFS - ORD
2 stops21h 46mMultiple Airlines
Deal found 30/4£598
Wed 30/415:45ORD - BHD
2 stops14h 55mAer Lingus
Sat 10/509:50BHD - ORD
2 stops15h 10mAer Lingus
Deal found 30/4£713
Sat 14/610:00ORD - BHD
3 stops29h 10mMultiple Airlines
Sat 21/606:55BHD - ORD
3 stops32h 14mMultiple Airlines
Deal found 30/4£728
Thu 12/610:26MDW - BFS
2 stops23h 19mMultiple Airlines
Thu 19/608:10BFS - MDW
2 stops19h 35mMultiple Airlines
Deal found 29/4£752
Wed 13/813:00MDW - BHD
2 stops21h 55mDelta
Sun 24/806:30BHD - MDW
2 stops17h 33mDelta
Deal found 29/4£773
Sat 14/609:40MDW - BHD
3 stops22h 05mMultiple Airlines
Sat 21/607:00BHD - MDW
3 stops31h 45mMultiple Airlines
Deal found 30/4£897
Sat 14/619:21MDW - BHD
2 stops15h 34mKLM
Sat 21/606:30BHD - MDW
2 stops18h 11mKLM
Deal found 30/4£1,750
Sun 18/516:55ORD - BHD
1 stop12h 35mIberia
Wed 6/806:50BHD - ORD
1 stop17h 25mIberia
Deal found 29/4£2,064

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 30 April 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 - BHD

ORDBHD

Chicago O'Hare Intl

Thu 21/8

17:00-13:15

1 stop14h 15m

Belfast City

Thu 4/9

06:35-13:55

1 stop13h 20m

£475

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 21/8

21:15-15:30

1 stop12h 15m

Belfast City

Thu 4/9

09:35-15:55

1 stop12h 20m

£534

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sat 14/6

10:00-11:00

3 stops19h 00m

Belfast Intl

Mon 16/6

06:10-21:56

2 stops21h 46m

£598

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sat 14/6

10:00-21:10

3 stops29h 10m

Belfast City

Sat 21/6

06:55-09:09

3 stops32h 14m

£728

ChicagoBelfast

MDW - BFS

MDWBFS

Chicago Midway

Thu 12/6

10:26-15:45

2 stops23h 19m

Belfast Intl

Thu 19/6

08:10-21:45

2 stops19h 35m

£752

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Wed 13/8

13:00-16:55

2 stops21h 55m

Belfast City

Sun 24/8

06:30-18:03

2 stops17h 33m

£773

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 22/6

21:15-17:45

2 stops14h 30m

Belfast City

Sat 5/7

07:00-19:00

2 stops18h 00m

£874

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Sat 14/6

09:40-13:45

3 stops22h 05m

Belfast City

Sat 21/6

07:00-08:45

3 stops31h 45m

£897

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sat 14/6

17:39-16:55

2 stops17h 16m

Belfast City

Sat 21/6

06:30-17:46

2 stops17h 16m

£960

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Sat 14/6

19:21-16:55

2 stops15h 34m

Belfast City

Sat 21/6

06:30-18:41

2 stops18h 11m

£1,750

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 17 results
1
2

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

Rainfall in Belfast by month

Plan your trip to Belfast by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Belfast ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Belfast when rainfall is around 50.0 mm.

Temperature in Belfast by month

Plan your trip to Belfast by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Belfast, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

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 30 April 2025.
To help decide which airline to fly from Chicago to Belfast, see what other customers have to say about Delta, KLM and Finnair. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,936 reviews
Check prices

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very Good
7,936 reviews
Delta
8.0
Very Good
7,936 reviews
Check prices

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very Good
7,936 reviews
Check prices

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,275 reviews
Delta
8.0
Very Good
7,936 reviews
Check prices

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
7,936 reviews
Check prices

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Aer Lingus
7.0
Good
1,076 reviews
Delta
8.0
Very Good
7,936 reviews
Check prices

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines flying from Chicago to Belfast round-trip?

    Cheapflights users have booked flights from Chicago to Belfast round-trip from £475. Other airlines that can offer you cheap pricing are British Airways, from £534, and Delta, from £773. American Airlines is priced at 32% lower than the current average price of a flight leaving 3 months from now.

  • 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 £300. However, be on the lookout for offers from Delta and Finnair, 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?

    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 Intl.

  • 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.

  • What is the cheapest month to book a flight from Chicago to Belfast?

    Currently, January is the cheapest month in which you can book a flight from Chicago to Belfast (average of £67). Flying from Chicago to Belfast in July is currently the most expensive (average of £90). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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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

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

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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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