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Cheap flights from Illinois to Belfast from £242

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 8/9. 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 return flights

Enter your travel dates to find the best prices.
British Airways Logo
17:00 - 12:55
ORD
-
BHD
13h 55m
1 stop
British Airways Logo
06:35 - 19:45
BHD
-
ORD
18h 10m
1 stop
£652British Airways
Mon, 19 Oct - Wed, 28 Oct
British Airways Logo
17:10 - 11:30
ORD
-
BHD
12h 20m
1 stop
British Airways Logo
06:45 - 13:50
BHD
-
ORD
13h 05m
1 stop
£664British Airways
Tue, 10 Nov - Fri, 13 Nov
British Airways Logo
21:45 - 18:40
ORD
-
BHD
14h 55m
1 stop
British Airways Logo
08:45 - 18:45
BHD
-
ORD
16h 00m
1 stop
£665British Airways
Tue, 10 Nov - Fri, 13 Nov
Multiple Airlines Logo
08:50 - 19:15
ORD
-
BFS
28h 25m
2 stops
Multiple Airlines Logo
21:55 - 05:52
BFS
-
ORD
37h 57m
3 stops
£673Multiple Airlines
Wed, 10 Jun - Mon, 15 Jun
Multiple Airlines Logo
16:37 - 16:30
ORD
-
BFS
17h 53m
2 stops
Multiple Airlines Logo
21:55 - 11:21
BFS
-
ORD
43h 26m
3 stops
£718Multiple Airlines
Fri, 12 Jun - Mon, 15 Jun
KLM Logo
12:41 - 09:20
MDW
-
BHD
14h 39m
2 stops
KLM Logo
09:50 - 22:36
BHD
-
MDW
18h 46m
2 stops
£802KLM
Wed, 22 Jul - Fri, 7 Aug
KLM Logo
18:58 - 16:55
MDW
-
BHD
15h 57m
2 stops
KLM Logo
09:50 - 22:36
BHD
-
MDW
18h 46m
2 stops
£890KLM
Thu, 23 Jul - Fri, 7 Aug
American Airlines Logo
18:13 - 18:10
STL
-
BHD
17h 57m
2 stops
American Airlines Logo
09:35 - 00:16
BHD
-
STL
20h 41m
2 stops
£963American Airlines
Fri, 12 Jun - Fri, 19 Jun
Delta Logo
09:54 - 09:20
MDW
-
BHD
17h 26m
2 stops
Delta Logo
09:50 - 22:17
BHD
-
MDW
18h 27m
2 stops
£969Delta
Mon, 8 Jun - Mon, 15 Jun
American Airlines Logo
18:13 - 18:10
STL
-
BHD
17h 57m
2 stops
American Airlines Logo
06:30 - 19:30
BHD
-
STL
19h 00m
1 stop
£1,068American Airlines
Fri, 12 Jun - Fri, 19 Jun

British Airways flights from Illinois to Belfast

Our best British Airways deals on Illinois to Belfast flight tickets
British Airways
19 Oct
ORD17:00Chicago O'Hare Intl
13h 55m
1 stop
BHD12:55Belfast City
28 Oct
BHD06:35Belfast City
18h 10m
1 stop
ORD19:45Chicago O'Hare Intl
£652
British Airways
10 Nov
ORD17:10Chicago O'Hare Intl
12h 20m
1 stop
BHD11:30Belfast City
13 Nov
BHD06:45Belfast City
13h 05m
1 stop
ORD13:50Chicago O'Hare Intl
£664
British Airways
10 Nov
ORD21:45Chicago O'Hare Intl
14h 55m
1 stop
BHD18:40Belfast City
13 Nov
BHD08:45Belfast City
16h 00m
1 stop
ORD18:45Chicago O'Hare Intl
£665

KLM flights from Illinois to Belfast

Our best KLM deals on Illinois to Belfast flight tickets
KLM
22 Jul
MDW12:41Chicago Midway
14h 39m
2 stops
BHD09:20Belfast City
7 Aug
BHD09:50Belfast City
18h 46m
2 stops
MDW22:36Chicago Midway
£802
KLM
23 Jul
ORD12:27Chicago O'Hare Intl
14h 53m
2 stops
BHD09:20Belfast City
30 Jul
BHD09:50Belfast City
16h 41m
2 stops
ORD20:31Chicago O'Hare Intl
£841
KLM
23 Jul
MDW18:58Chicago Midway
15h 57m
2 stops
BHD16:55Belfast City
7 Aug
BHD09:50Belfast City
18h 46m
2 stops
MDW22:36Chicago Midway
£890

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 16 May 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 return flight

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 19/10

17:00-12:55

1 stop13h 55m

Belfast City

Wed 28/10

06:35-19:45

1 stop18h 10m

£652
Fastest return journey

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 10/11

17:10-11:30

1 stop12h 20m

Belfast City

Fri 13/11

06:45-13:50

1 stop13h 05m

£664

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Tue 10/11

21:45-18:40

1 stop14h 55m

Belfast City

Fri 13/11

08:45-18:45

1 stop16h 00m

£665

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 10/6

08:50-19:15

2 stops28h 25m

Belfast Intl

Mon 15/6

21:55-05:52

3 stops37h 57m

£673

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 12/6

16:37-16:30

2 stops17h 53m

Belfast Intl

Mon 15/6

21:55-11:21

3 stops43h 26m

£718

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Wed 22/7

12:41-09:20

2 stops14h 39m

Belfast City

Fri 7/8

09:50-22:36

2 stops18h 46m

£802

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Thu 23/7

18:58-16:55

2 stops15h 57m

Belfast City

Fri 7/8

09:50-22:36

2 stops18h 46m

£890

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Fri 12/6

18:13-18:10

2 stops17h 57m

Belfast City

Fri 19/6

09:35-00:16

2 stops20h 41m

£963

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Mon 8/6

09:54-09:20

2 stops17h 26m

Belfast City

Mon 15/6

09:50-22:17

2 stops18h 27m

£969

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Fri 12/6

18:13-18:10

2 stops17h 57m

Belfast City

Fri 19/6

06:30-19:30

1 stop19h 00m

£1,068

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 were last updated today.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for 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.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to Belfast. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Belfast from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Illinois to Belfast.

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

Of course. momondo tracks the price of Illinois to Belfast flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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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