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$398+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BHD
may. 4 — may. 111
dom. 5/4
dom. 5/11
1 adult, Economy
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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 abril 29, 2025.

Round-trip from

$676
(American Airlines)

One-way from

$398
(Cheapflightsfares)

Popular in

May

Cheapest in

September

Average price

$1,341
From Chicago (CHI) to Belfast
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One-way flight from Chicago (CHI) to Belfast
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Highest demand for flights based on searches. 26% potential increase in price ($339 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($53 potential savings vs. average RT 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 abril 29, 2025.

This American Airlines deal was found by Cheapflights users on 4/29. 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.
lun. 5/55:40 pmORD - BHD
1 stop13h 15mAmerican Airlines
mar. 5/136:35 amBHD - ORD
1 stop14h 05mAmerican Airlines
Deal found 4/29$595
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/219:15 pmORD - BHD
1 stop12h 15mBritish Airways
jue. 9/49:35 amBHD - ORD
1 stop12h 20mBritish Airways
Deal found 4/29$716
This Mytrip deal was found by Cheapflights users on 4/28. 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.
mié. 7/163:50 pmORD - BFS
2 stops20h 45mMultiple Airlines
vie. 7/258:20 amBFS - ORD
2 stops36h 44mMultiple Airlines
Deal found 4/28$717
This Air France deal was found by Cheapflights users on 4/29. 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.
mar. 5/66:15 pmORD - BHD
2 stops20h 50mKLM
mar. 5/136:30 amBHD - ORD
2 stops18h 07mKLM
Deal found 4/29$721
This Delta deal was found by Cheapflights users on 4/29. 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.
mar. 5/65:05 pmORD - BHD
2 stops22h 00mDelta
mar. 5/136:30 amBHD - ORD
2 stops16h 59mDelta
Deal found 4/29$726
This Trip.com deal was found by Cheapflights users on 4/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/1210:26 amMDW - BFS
2 stops23h 19mMultiple Airlines
jue. 6/198:10 amBFS - MDW
2 stops19h 35mMultiple Airlines
Deal found 4/29$1,008
This Delta deal was found by Cheapflights users on 4/29. 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.
mié. 8/131:00 pmMDW - BHD
2 stops21h 55mDelta
dom. 8/246:30 amBHD - MDW
2 stops17h 33mDelta
Deal found 4/29$1,037
This Mytrip deal was found by Cheapflights users on 4/29. 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.
vie. 6/137:04 amORD - BHD
3 stops31h 21mMultiple Airlines
vie. 6/207:00 amBHD - ORD
2 stops20h 56mMultiple Airlines
Deal found 4/29$1,135
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 6/229:15 pmORD - BHD
2 stops14h 30mAer Lingus
sáb. 7/57:00 amBHD - ORD
2 stops18h 00mAer Lingus
Deal found 4/29$1,172
This KLM deal was found by Cheapflights users on 4/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/127:21 pmMDW - BHD
2 stops15h 34mKLM
jue. 6/196:30 amBHD - MDW
2 stops17h 32mKLM
Deal found 4/27$2,248
This Iberia deal was found by Cheapflights users on 4/29. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/184:55 pmORD - BHD
1 stop12h 35mIberia
mar. 8/56:35 amBHD - ORD
1 stop14h 15mIberia
Deal found 4/29$2,768
This Air France deal was found by Cheapflights users on 4/27. 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.
vie. 8/16:20 pmMDW - BHD
2 stops16h 35mMultiple Airlines
sáb. 8/96:30 amBHD - MDW
2 stops18h 10mMultiple Airlines
Deal found 4/27$4,232

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 abril 29, 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

mié. 8/13

7:15 pm-11:55 am

1 stop10h 40m

Belfast City

dom. 8/24

11:00 am-6:15 pm

1 stop13h 15m

$676

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

jue. 8/21

9:15 pm-3:30 pm

1 stop12h 15m

Belfast City

jue. 9/4

9:35 am-3:55 pm

1 stop12h 20m

$716

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

mié. 7/16

3:50 pm-6:35 pm

2 stops20h 45m

Belfast Intl

vie. 7/25

8:20 am-3:04 pm

2 stops36h 44m

$717

ChicagoBelfast

MDW - BFS

MDWBFS

Chicago Midway

jue. 6/12

10:26 am-3:45 pm

2 stops23h 19m

Belfast Intl

jue. 6/19

8:10 am-9:45 pm

2 stops19h 35m

$1,008

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

mié. 8/13

1:00 pm-4:55 pm

2 stops21h 55m

Belfast City

dom. 8/24

6:30 am-6:03 pm

2 stops17h 33m

$1,037

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

vie. 6/13

7:04 am-8:25 pm

3 stops31h 21m

Belfast City

vie. 6/20

7:00 am-9:56 pm

2 stops20h 56m

$1,135

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

dom. 6/22

9:15 pm-5:45 pm

2 stops14h 30m

Belfast City

sáb. 7/5

7:00 am-7:00 pm

2 stops18h 00m

$1,172

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

jue. 6/12

7:21 pm-4:55 pm

2 stops15h 34m

Belfast City

jue. 6/19

6:30 am-6:02 pm

2 stops17h 32m

$2,248

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

dom. 5/18

4:55 pm-11:30 am

1 stop12h 35m

Belfast City

mar. 8/5

6:35 am-2:50 pm

1 stop14h 15m

$2,768

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

jue. 5/22

4:20 pm-9:15 pm

1 stop22h 55m

Belfast City

mié. 8/6

6:30 am-2:40 pm

1 stop14h 10m

$2,964

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 18 results
1
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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 abril 29, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 9% on flights from Chicago to Belfast by exploring options for tickets at noon.

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 2.0 - 3.5 inches per month. October is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Belfast when rainfall is around 2.0 in.

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 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

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 abril 29, 2025.
See what other customers who have flown with Delta, KLM and Finnair from Chicago to Belfast have to say. 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

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

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

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

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
1,333 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

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
1,273 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

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.
Virgin Atlantic
7.4
Good
642 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

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

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

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?

    American Airlines, at $676, was found to be the cheapest airline from Chicago to Belfast.Alternate airlines to your destination round-trip include British Airways and Delta. These flights start at 28% lower than the current average price 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 $398. However, be on the lookout for offers from Delta and Virgin Atlantic, 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 Intl 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.

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

    Currently, February is the cheapest month in which you can book a flight from Chicago to Belfast (average of $657). Flying from Chicago to Belfast in June is currently the most expensive (average of $1,189). 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.
St. Louis to Belfast Intl flights
St. Louis to Belfast City flights
O'Hare Intl to Belfast Intl flights
O'Hare Intl 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 abril 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$622Average$724FlexibilityNo cancel feeOn-time70%

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