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$394+ Cheap flights from Illinois 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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BHD
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Illinois to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) 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 January 21, 2025.

Round-trip from

$617
(oojo)

One-way from

$394
(Kiwi.com)
From Illinois to Belfast
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One-way flight from Illinois to Belfast
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Find flight deals from Illinois to Belfast

Cheapest flights from Illinois to Belfast
Explore the most affordable flight options available from Illinois to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This oojo deal was found by Cheapflights users on 1/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/176:26 pmORD - BHD
1 stop13h 44mBritish Airways
Mon 2/242:40 pmBHD - ORD
1 stop34h 05mBritish Airways
Deal found 1/20$617
This Trip.com deal was found by Cheapflights users on 1/20. 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.
Mon 2/176:30 pmORD - BFS
2 stops19h 35mMultiple Airlines
Mon 2/247:00 amBFS - ORD
2 stops40h 20mMultiple Airlines
Deal found 1/20$636
This Finnair deal was found by Cheapflights users on 1/20. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/68:11 pmORD - BHD
1 stop14h 29mFinnair
Thu 3/136:35 amBHD - ORD
1 stop18h 10mFinnair
Deal found 1/20$658
This Delta deal was found by Cheapflights users on 1/21. 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 3/31:26 pmMDW - BHD
2 stops21h 24mDelta
Tue 3/186:30 amBHD - MDW
2 stops20h 53mDelta
Deal found 1/21$666
This Delta deal was found by Cheapflights users on 1/21. 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 4/2810:45 amSTL - BHD
2 stops24h 10mDelta
Wed 5/146:30 amBHD - STL
2 stops20h 03mDelta
Deal found 1/21$740
This American Airlines deal was found by Cheapflights users on 1/21. 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.
Thu 5/11:48 pmSTL - BHD
2 stops17h 27mAmerican Airlines
Tue 5/136:35 amBHD - STL
2 stops19h 10mAmerican Airlines
Deal found 1/21$742
This Mytrip deal was found by Cheapflights users on 1/20. 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 2/175:15 amORD - BHD
3 stops33h 15mMultiple Airlines
Mon 2/2410:15 amBHD - ORD
3 stops30h 25mMultiple Airlines
Deal found 1/20$817
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Fri 7/410:20 pmORD - BHD
1 stop11h 10mAmerican Airlines
Sun 7/136:50 amBHD - ORD
2 stops15h 05mAmerican Airlines
Deal found 1/20$1,045
This Air France deal was found by Cheapflights users on 1/21. 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.
Fri 5/25:30 pmSTL - BHD
2 stops17h 25mMultiple Airlines
Wed 5/146:30 amBHD - STL
2 stops20h 18mMultiple Airlines
Deal found 1/21$1,185
This Gurufare deal was found by Cheapflights users on 1/21. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/146:15 pmSTL - BHD
2 stops17h 15mBritish Airways
Mon 7/217:30 pmBHD - STL
2 stops26h 28mBritish Airways
Deal found 1/21$1,204
This Mytrip deal was found by Cheapflights users on 1/21. 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 3/73:45 pmSTL - BFS
2 stops21h 10mMultiple Airlines
Fri 3/148:30 pmBFS - STL
3 stops47h 25mMultiple Airlines
Deal found 1/21$1,477
This AranGrant deal was found by Cheapflights users on 1/20. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/233:45 pmORD - BHD
2 stops14h 55mAer Lingus
Sat 10/47:00 pmBHD - ORD
2 stops25h 00mAer Lingus
Deal found 1/20$4,326

Find flights from Illinois to Belfast within your budget

Customize your flight search to find flights from Illinois 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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 2/17

6:26 pm-2:10 pm

1 stop13h 44m

Belfast City

Mon 2/24

2:40 pm-6:45 pm

1 stop34h 05m

$617

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 2/17

6:30 pm-8:05 pm

2 stops19h 35m

Belfast Intl

Mon 2/24

7:00 am-5:20 pm

2 stops40h 20m

$636

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 3/6

8:11 pm-4:40 pm

1 stop14h 29m

Belfast City

Thu 3/13

6:35 am-7:45 pm

1 stop18h 10m

$658

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Mon 3/3

1:26 pm-4:50 pm

2 stops21h 24m

Belfast City

Tue 3/18

6:30 am-10:23 pm

2 stops20h 53m

$666

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 4/28

5:40 pm-4:55 pm

2 stops17h 15m

Belfast City

Mon 5/12

5:25 pm-3:58 pm

2 stops28h 33m

$740

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Thu 5/1

1:48 pm-1:15 pm

2 stops17h 27m

Belfast City

Tue 5/13

6:35 am-7:45 pm

2 stops19h 10m

$742

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 2/17

5:15 am-8:30 pm

3 stops33h 15m

Belfast City

Mon 2/24

10:15 am-10:40 am

3 stops30h 25m

$817

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 7/4

10:20 pm-3:30 pm

1 stop11h 10m

Belfast City

Sun 7/13

6:50 am-3:55 pm

2 stops15h 05m

$1,045

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Fri 5/2

5:30 pm-4:55 pm

2 stops17h 25m

Belfast City

Wed 5/14

6:30 am-8:48 pm

2 stops20h 18m

$1,185

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 7/14

6:15 pm-5:30 pm

2 stops17h 15m

Belfast City

Mon 7/21

7:30 pm-3:58 pm

2 stops26h 28m

$1,204

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 18 results
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Best time to book a flight from Illinois to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Illinois 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.

Travel insights for flights from Illinois to Belfast

Get recent, data-driven insights about flights from Illinois to Belfast including ideal travel times, pricing trends, and more.

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

Find hourly flight availability from Illinois 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 January 21, 2025.

When flying from Illinois to Belfast, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 January 21, 2025.
Delta
8.0
Very good
8,521 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 10

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

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 10

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

Finnair
7.6
Good
1,286 reviews
Delta
8.0
Very good
8,521 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 10

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
8,521 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 10

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

Aer Lingus
7.1
Good
1,082 reviews
Delta
8.0
Very good
8,521 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 10

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

Iberia
7.0
Good
2,646 reviews
Delta
8.0
Very good
8,521 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 10

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 Illinois 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 to fly from Illinois to Belfast one-way?

    $468 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Aer Lingus and Iberia, with prices starting from $540 and $573, respectively.

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

    The most popular flight routes from Illinois to Belfast are Chicago O'Hare Intl - Belfast Intl, Lambert-St Louis - Belfast Intl and Lambert-St Louis - Belfast City.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois 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 Illinois to Belfast?

    Currently, February is the cheapest month in which you can book a flight from Illinois to Belfast (average of $657). Flying from Illinois 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 Illinois to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Illinois to Belfast

Discover the top 2 airlines that operate flights from Illinois 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$610Average$782FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$612Average$782FlexibilityNo cancel feeOn-time70%
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