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Cheap flights from Illinois to Belfast from $237

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Belfast departing on 4/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Illinois to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:30 pm - 1:25 pm
ORD
-
BFS
12h 55m
2 stops
Multiple Airlines Logo
6:30 am - 5:20 pm
BFS
-
ORD
16h 50m
2 stops
$637Multiple Airlines
Tue, Feb 24 - Tue, Mar 3
American Airlines Logo
8:35 pm - 2:50 pm
ORD
-
BHD
12h 15m
1 stop
American Airlines Logo
8:45 am - 3:25 pm
BHD
-
ORD
12h 40m
1 stop
$656American Airlines
Tue, Feb 24 - Tue, Mar 3
American Airlines Logo
8:35 pm - 4:45 pm
ORD
-
BHD
14h 10m
1 stop
American Airlines Logo
6:35 am - 5:13 pm
BHD
-
ORD
16h 38m
2 stops
$666American Airlines
Tue, Feb 24 - Tue, Mar 3
Multiple Airlines Logo
2:12 pm - 4:50 pm
ORD
-
BHD
20h 38m
2 stops
Multiple Airlines Logo
6:30 am - 5:53 pm
BHD
-
ORD
17h 23m
2 stops
$694Multiple Airlines
Tue, Feb 24 - Tue, Mar 3
British Airways Logo
6:54 pm - 4:30 pm
ORD
-
BHD
16h 36m
2 stops
British Airways Logo
8:25 pm - 3:43 pm
BHD
-
ORD
48h 18m
2 stops
$765British Airways
Wed, Mar 18 - Sun, Mar 22
British Airways Logo
6:54 pm - 4:30 pm
ORD
-
BHD
16h 36m
2 stops
British Airways Logo
8:25 pm - 3:43 pm
BHD
-
ORD
48h 18m
2 stops
$766British Airways
Wed, Mar 18 - Sun, Mar 22
Delta Logo
5:25 pm - 4:55 pm
MDW
-
BHD
17h 30m
2 stops
Delta Logo
6:30 am - 6:10 pm
BHD
-
MDW
17h 40m
2 stops
$1,335Delta
Fri, Aug 7 - Mon, Dec 21
Delta Logo
4:30 pm - 3:55 pm
MDW
-
BHD
18h 25m
2 stops
Delta Logo
9:50 am - 10:31 pm
BHD
-
MDW
18h 41m
2 stops
$2,885Delta
Sat, Mar 28 - Thu, Apr 2
KLM Logo
7:20 pm - 3:55 pm
MDW
-
BHD
15h 35m
2 stops
KLM Logo
9:50 am - 10:31 pm
BHD
-
MDW
18h 41m
2 stops
$3,340KLM
Sat, Mar 28 - Sun, Apr 5
KLM Logo
6:45 pm - 4:55 pm
MDW
-
BHD
16h 10m
2 stops
KLM Logo
9:50 am - 9:45 pm
BHD
-
MDW
17h 55m
2 stops
$3,509KLM
Fri, Jul 3 - Fri, Jul 10

Delta flights from Illinois to Belfast

Our best Delta deals on Illinois to Belfast flight tickets
Delta
Aug 7
MDW5:25 pmChicago Midway
17h 30m
2 stops
BHD4:55 pmBelfast City
Dec 21
BHD6:30 amBelfast City
17h 40m
2 stops
MDW6:10 pmChicago Midway
$1,335
Delta
Mar 28
MDW4:30 pmChicago Midway
18h 25m
2 stops
BHD3:55 pmBelfast City
Apr 2
BHD9:50 amBelfast City
18h 41m
2 stops
MDW10:31 pmChicago Midway
$2,885

British Airways flights from Illinois to Belfast

Our best British Airways deals on Illinois to Belfast flight tickets
British Airways
Mar 18
ORD6:54 pmChicago O'Hare Intl
16h 36m
2 stops
BHD4:30 pmBelfast City
Mar 22
BHD8:25 pmBelfast City
48h 18m
2 stops
ORD3:43 pmChicago O'Hare Intl
$765
British Airways
Mar 18
ORD6:54 pmChicago O'Hare Intl
16h 36m
2 stops
BHD4:30 pmBelfast City
Mar 22
BHD8:25 pmBelfast City
48h 18m
2 stops
ORD3:43 pmChicago O'Hare Intl
$766
British Airways
Mar 4
ORD5:10 pmChicago O'Hare Intl
11h 05m
1 stop
BHD10:15 amBelfast City
Mar 8
BHD10:40 amBelfast City
33h 10m
1 stop
ORD2:50 pmChicago O'Hare Intl
$798

momondo Fare Finder

 
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, momondo users made 832,500 searches. Data last updated February 11, 2026.
Use the filters below to find and compare flights from Illinois to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Tue 2/24

6:30 pm-1:25 pm

2 stops12h 55m

Belfast Intl

Tue 3/3

6:30 am-5:20 pm

2 stops16h 50m

$637

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 2/24

8:35 pm-2:50 pm

1 stop12h 15m

Belfast City

Tue 3/3

8:45 am-3:25 pm

1 stop12h 40m

$656

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 2/24

8:35 pm-4:45 pm

1 stop14h 10m

Belfast City

Tue 3/3

6:35 am-5:13 pm

2 stops16h 38m

$666

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 2/24

2:12 pm-4:50 pm

2 stops20h 38m

Belfast City

Tue 3/3

6:30 am-5:53 pm

2 stops17h 23m

$694

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 3/18

6:54 pm-4:30 pm

2 stops16h 36m

Belfast City

Sun 3/22

8:25 pm-3:43 pm

2 stops48h 18m

$765

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 3/18

6:54 pm-4:30 pm

2 stops16h 36m

Belfast City

Sun 3/22

8:25 pm-3:43 pm

2 stops48h 18m

$766

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Fri 8/7

5:25 pm-4:55 pm

2 stops17h 30m

Belfast City

Mon 12/21

6:30 am-6:10 pm

2 stops17h 40m

$1,335

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Sat 3/28

4:30 pm-3:55 pm

2 stops18h 25m

Belfast City

Thu 4/2

9:50 am-10:31 pm

2 stops18h 41m

$2,885

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Sat 3/28

7:20 pm-3:55 pm

2 stops15h 35m

Belfast City

Sun 4/5

9:50 am-10:31 pm

2 stops18h 41m

$3,340

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Fri 7/3

6:45 pm-4:55 pm

2 stops16h 10m

Belfast City

Fri 7/10

9:50 am-9:45 pm

2 stops17h 55m

$3,509

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Belfast from

How to get the cheapest flight ticket from Illinois to Belfast

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Illinois to Belfast?

Aer Lingus is the most popular carrier operating from Illinois to Belfast

Cheap Illinois to Belfast flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Belfast

Fastest flight time

15h 20m

Direct flights

None
The fastest flight from Illinois to Belfast takes 15h 20m
There are no direct flights from Illinois to Belfast. There are no popular flight routes from Illinois to Belfast.
Search flight deals

  • When did momondo last update prices for flights from Illinois to Belfast?

    Prices for flights from Illinois to Belfast are refreshed on a daily basis.

  • How many operators does momondo search for flights from Illinois to Belfast?

  • How old do you have to be to fly from Illinois to Belfast?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Belfast.

  • What documentation or ID do you need to fly to Belfast?

    The travel and health documents you'll need for your trip to Belfast may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Belfast. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Illinois to Belfast

Compare and see reviews for airlines that fly from Illinois to Belfast with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $577Free CancellationRating
6.7
7,731 reviews
Search British Airways flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Belfast?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Belfast for you.

Can I find flights from Illinois to Belfast with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Illinois to Belfast flights to just show those with flexible booking policies.

How can momondo help me find flights from Illinois to Belfast?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Belfast from Illinois.

I’m not ready to book a flight from Illinois to Belfast right now. Can momondo alert me if prices change?

Price alerts on flights to Belfast from Illinois are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast
Belfast Intl Airport
Belfast City Airport