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Cheap flights from Illinois to Belfast from £470

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Belfast departing on 12/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
18:44 - 18:35STL-BHD
17h 51m2 stops
British Airways Logo
06:35 - 18:16BHD-STL
17h 41m2 stops
£470British Airways
Find Deal
Mon, 12 Jan - Tue, 20 Jan
British Airways Logo
18:44 - 18:35STL-BHD
17h 51m2 stops
British Airways Logo
11:25 - 22:59BHD-STL
17h 34m2 stops
£473British Airways
Find Deal
Mon, 12 Jan - Tue, 20 Jan
Virgin Atlantic Logo
16:25 - 16:50ORD-BHD
18h 25m1 stop
Virgin Atlantic Logo
06:30 - 14:20BHD-ORD
13h 50m1 stop
£480Virgin Atlantic
Find Deal
Mon, 8 Dec - Wed, 24 Dec
American Airlines Logo
15:54 - 16:05STL-BHD
18h 11m2 stops
American Airlines Logo
06:35 - 18:34BHD-STL
17h 59m2 stops
£486American Airlines
Find Deal
Mon, 2 Feb - Tue, 10 Feb
Virgin Atlantic Logo
13:23 - 16:50ORD-BHD
21h 27m2 stops
Virgin Atlantic Logo
06:30 - 14:20BHD-ORD
13h 50m1 stop
£500Virgin Atlantic
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Mon, 8 Dec - Wed, 24 Dec
Delta Logo
13:14 - 16:50MDW-BHD
21h 36m2 stops
Delta Logo
06:30 - 17:19BHD-MDW
16h 49m2 stops
£509Delta
Find Deal
Mon, 8 Dec - Wed, 24 Dec
Multiple Airlines Logo
18:30 - 19:35ORD-BHD
19h 05m2 stops
Multiple Airlines Logo
07:25 - 17:20BHD-ORD
15h 55m2 stops
£550Multiple Airlines
Find Deal
Thu, 4 Dec - Thu, 11 Dec
Multiple Airlines Logo
18:30 - 20:50ORD-BHD
20h 20m2 stops
Multiple Airlines Logo
07:25 - 15:25BHD-ORD
38h 00m3 stops
£564Multiple Airlines
Find Deal
Thu, 4 Dec - Thu, 11 Dec
Delta Logo
18:10 - 16:55ORD-BHD
16h 45m2 stops
Delta Logo
06:30 - 14:20BHD-ORD
13h 50m1 stop
£568Delta
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Fri, 3 Apr - Tue, 7 Apr
American Airlines Logo
15:43 - 14:15STL-BHD
16h 32m2 stops
American Airlines Logo
09:10 - 23:38BHD-STL
20h 28m2 stops
£584American Airlines
Find Deal
Mon, 1 Dec - Sun, 7 Dec

American Airlines flights from Illinois to Belfast City Airport

Our best American Airlines deals on Illinois to Belfast City Airport flight tickets
American Airlines
2 Feb
STL15:54Lambert-St Louis
18h 11m
2 stops
BHD16:05Belfast City
10 Feb
BHD06:35Belfast City
17h 59m
2 stops
STL18:34Lambert-St Louis
£486
Find similar
American Airlines
1 Dec
STL15:43Lambert-St Louis
16h 32m
2 stops
BHD14:15Belfast City
7 Dec
BHD09:10Belfast City
20h 28m
2 stops
STL23:38Lambert-St Louis
£584
Find similar
American Airlines
27 Mar
STL09:28Lambert-St Louis
20h 02m
2 stops
BHD10:30Belfast City
31 Mar
BHD06:35Belfast City
22h 57m
2 stops
STL23:32Lambert-St Louis
£744
Find similar

British Airways flights from Illinois to Belfast City Airport

Our best British Airways deals on Illinois to Belfast City Airport flight tickets
British Airways
12 Jan
STL18:44Lambert-St Louis
17h 51m
2 stops
BHD18:35Belfast City
20 Jan
BHD06:35Belfast City
17h 41m
2 stops
STL18:16Lambert-St Louis
£470
Find similar
British Airways
12 Jan
STL18:44Lambert-St Louis
17h 51m
2 stops
BHD18:35Belfast City
20 Jan
BHD11:25Belfast City
17h 34m
2 stops
STL22:59Lambert-St Louis
£473
Find similar
British Airways
1 Feb
STL11:05Lambert-St Louis
17h 15m
2 stops
BHD10:20Belfast City
10 Feb
BHD10:00Belfast City
18h 59m
2 stops
STL22:59Lambert-St Louis
£494
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Illinois to Belfast City Airport 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 5 November 2025.
Use the filters below to find and compare flights from Illinois to Belfast City Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 12/1

18:44-18:35

2 stops17h 51m

Belfast City

Tue 20/1

06:35-18:16

2 stops17h 41m

£470

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 12/1

18:44-18:35

2 stops17h 51m

Belfast City

Tue 20/1

11:25-22:59

2 stops17h 34m

£473

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 8/12

16:25-16:50

1 stop18h 25m

Belfast City

Wed 24/12

06:30-14:20

1 stop13h 50m

£480

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 2/2

15:54-16:05

2 stops18h 11m

Belfast City

Tue 10/2

06:35-18:34

2 stops17h 59m

£486

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 8/12

13:23-16:50

2 stops21h 27m

Belfast City

Wed 24/12

06:30-14:20

1 stop13h 50m

£500

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Mon 8/12

13:14-16:50

2 stops21h 36m

Belfast City

Wed 24/12

06:30-17:19

2 stops16h 49m

£509

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 4/12

18:30-19:35

2 stops19h 05m

Belfast City

Thu 11/12

07:25-17:20

2 stops15h 55m

£550

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 4/12

18:30-20:50

2 stops20h 20m

Belfast City

Thu 11/12

07:25-15:25

3 stops38h 00m

£564

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 3/4

18:10-16:55

2 stops16h 45m

Belfast City

Tue 7/4

06:30-14:20

1 stop13h 50m

£568

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 1/12

15:43-14:15

2 stops16h 32m

Belfast City

Sun 7/12

09:10-23:38

2 stops20h 28m

£584

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

Cheap Illinois to Belfast City Airport flight deals and tips

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

Direct flights

None
There are no direct flights from Illinois to Belfast City Airport. There are no popular flight routes from Illinois to Belfast City Airport.
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  • When did momondo last update prices for flights from Illinois to Belfast City Airport?

    Prices for flights from Illinois to Belfast City Airport were last updated today.

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

    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 City Airport.

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

    The travel and health documents you'll need for your trip to Belfast City Airport 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 City Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from Illinois to Belfast City Airport?

    Confirm your travel details to search for the latest offers for flights from Illinois to Belfast City Airport. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Illinois to Belfast City Airport with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Travelling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Newcastle
Bangor
Carrickfergus

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Belfast from Illinois.

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

Flights from Illinois to Belfast with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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?

Yes. momondo can track prices for Illinois to Belfast flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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