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Cheap flights from Illinois to Belfast from $323

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 9/8. 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.
British Airways Logo
5:00 pm - 12:55 pm
ORD
-
BHD
13h 55m
1 stop
British Airways Logo
6:35 am - 7:45 pm
BHD
-
ORD
18h 10m
1 stop
$871British Airways
mån, okt 19 - ons, okt 28
British Airways Logo
5:10 pm - 11:30 am
ORD
-
BHD
12h 20m
1 stop
British Airways Logo
6:45 am - 1:50 pm
BHD
-
ORD
13h 05m
1 stop
$887British Airways
tis, nov 10 - fre, nov 13
British Airways Logo
9:45 pm - 6:40 pm
ORD
-
BHD
14h 55m
1 stop
British Airways Logo
8:45 am - 6:45 pm
BHD
-
ORD
16h 00m
1 stop
$888British Airways
tis, nov 10 - fre, nov 13
Multiple Airlines Logo
8:50 am - 7:15 pm
ORD
-
BFS
28h 25m
2 stops
Multiple Airlines Logo
9:55 pm - 5:52 am
BFS
-
ORD
37h 57m
3 stops
$898Multiple Airlines
ons, jun 10 - mån, jun 15
Multiple Airlines Logo
4:37 pm - 4:30 pm
ORD
-
BFS
17h 53m
2 stops
Multiple Airlines Logo
9:55 pm - 11:21 am
BFS
-
ORD
43h 26m
3 stops
$958Multiple Airlines
fre, jun 12 - mån, jun 15
KLM Logo
12:41 pm - 9:20 am
MDW
-
BHD
14h 39m
2 stops
KLM Logo
9:50 am - 10:36 pm
BHD
-
MDW
18h 46m
2 stops
$1,071KLM
ons, jul 22 - fre, aug 7
KLM Logo
6:58 pm - 4:55 pm
MDW
-
BHD
15h 57m
2 stops
KLM Logo
9:50 am - 10:36 pm
BHD
-
MDW
18h 46m
2 stops
$1,188KLM
tors, jul 23 - fre, aug 7
American Airlines Logo
6:13 pm - 6:10 pm
STL
-
BHD
17h 57m
2 stops
American Airlines Logo
9:35 am - 12:16 am
BHD
-
STL
20h 41m
2 stops
$1,285American Airlines
fre, jun 12 - fre, jun 19
Delta Logo
9:54 am - 9:20 am
MDW
-
BHD
17h 26m
2 stops
Delta Logo
9:50 am - 10:17 pm
BHD
-
MDW
18h 27m
2 stops
$1,294Delta
mån, jun 8 - mån, jun 15
American Airlines Logo
6:13 pm - 6:10 pm
STL
-
BHD
17h 57m
2 stops
American Airlines Logo
6:30 am - 7:30 pm
BHD
-
STL
19h 00m
1 stop
$1,425American Airlines
fre, jun 12 - fre, jun 19

British Airways flights from Illinois to Belfast

Our best British Airways deals on Illinois to Belfast flight tickets
British Airways
Oct 19
ORD5:00 pmChicago O'Hare Intl
13h 55m
1 stop
BHD12:55 pmBelfast City
Oct 28
BHD6:35 amBelfast City
18h 10m
1 stop
ORD7:45 pmChicago O'Hare Intl
$871
British Airways
Nov 10
ORD5:10 pmChicago O'Hare Intl
12h 20m
1 stop
BHD11:30 amBelfast City
Nov 13
BHD6:45 amBelfast City
13h 05m
1 stop
ORD1:50 pmChicago O'Hare Intl
$887
British Airways
Nov 10
ORD9:45 pmChicago O'Hare Intl
14h 55m
1 stop
BHD6:40 pmBelfast City
Nov 13
BHD8:45 amBelfast City
16h 00m
1 stop
ORD6:45 pmChicago O'Hare Intl
$888

KLM flights from Illinois to Belfast

Our best KLM deals on Illinois to Belfast flight tickets
KLM
Jul 22
MDW12:41 pmChicago Midway
14h 39m
2 stops
BHD9:20 amBelfast City
Aug 7
BHD9:50 amBelfast City
18h 46m
2 stops
MDW10:36 pmChicago Midway
$1,071
KLM
Jul 23
ORD12:27 pmChicago O'Hare Intl
14h 53m
2 stops
BHD9:20 amBelfast City
Jul 30
BHD9:50 amBelfast City
16h 41m
2 stops
ORD8:31 pmChicago O'Hare Intl
$1,122
KLM
Jul 23
MDW6:58 pmChicago Midway
15h 57m
2 stops
BHD4:55 pmBelfast City
Aug 7
BHD9:50 amBelfast City
18h 46m
2 stops
MDW10:36 pmChicago Midway
$1,188

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 maj 16, 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

Cheapest round-trip

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

mån 10/19

5:00 pm-12:55 pm

1 stop13h 55m

Belfast City

ons 10/28

6:35 am-7:45 pm

1 stop18h 10m

$871
Quickest round-trip

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

tis 11/10

5:10 pm-11:30 am

1 stop12h 20m

Belfast City

fre 11/13

6:45 am-1:50 pm

1 stop13h 05m

$887

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

tis 11/10

9:45 pm-6:40 pm

1 stop14h 55m

Belfast City

fre 11/13

8:45 am-6:45 pm

1 stop16h 00m

$888

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

ons 6/10

8:50 am-7:15 pm

2 stops28h 25m

Belfast Intl

mån 6/15

9:55 pm-5:52 am

3 stops37h 57m

$898

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

fre 6/12

4:37 pm-4:30 pm

2 stops17h 53m

Belfast Intl

mån 6/15

9:55 pm-11:21 am

3 stops43h 26m

$958

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

ons 7/22

12:41 pm-9:20 am

2 stops14h 39m

Belfast City

fre 8/7

9:50 am-10:36 pm

2 stops18h 46m

$1,071

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

tors 7/23

6:58 pm-4:55 pm

2 stops15h 57m

Belfast City

fre 8/7

9:50 am-10:36 pm

2 stops18h 46m

$1,188

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

fre 6/12

6:13 pm-6:10 pm

2 stops17h 57m

Belfast City

fre 6/19

9:35 am-12:16 am

2 stops20h 41m

$1,285

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

mån 6/8

9:54 am-9:20 am

2 stops17h 26m

Belfast City

mån 6/15

9:50 am-10:17 pm

2 stops18h 27m

$1,294

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

fre 6/12

6:13 pm-6:10 pm

2 stops17h 57m

Belfast City

fre 6/19

6:30 am-7:30 pm

1 stop19h 00m

$1,425

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?

British Airways, Delta, and KLM are the most popular carriers 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

11h 00m

Direct flights

None
The fastest flight from Illinois to Belfast takes 11h 00m
There are no direct flights from Illinois to Belfast. There are no popular flight routes from Illinois to Belfast.
Search flight deals

Frequently asked questions about flying from Illinois to Belfast

  • 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
7,981 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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mån 6/15
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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