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Cheap flights from Illinois to Belfast from $438

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 11/14. 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
6:44 pm - 6:35 pmSTL-BHD
17h 51m2 stops
British Airways Logo
6:35 am - 6:16 pmBHD-STL
17h 41m2 stops
$615British Airways
Find Deal
Mon, Jan 12 - Tue, Jan 20
British Airways Logo
6:44 pm - 6:35 pmSTL-BHD
17h 51m2 stops
British Airways Logo
11:25 am - 10:59 pmBHD-STL
17h 34m2 stops
$618British Airways
Find Deal
Mon, Jan 12 - Tue, Jan 20
Virgin Atlantic Logo
4:25 pm - 4:50 pmORD-BHD
18h 25m1 stop
Virgin Atlantic Logo
6:30 am - 2:20 pmBHD-ORD
13h 50m1 stop
$627Virgin Atlantic
Find Deal
Mon, Dec 8 - Wed, Dec 24
American Airlines Logo
3:54 pm - 4:05 pmSTL-BHD
18h 11m2 stops
American Airlines Logo
6:35 am - 6:34 pmBHD-STL
17h 59m2 stops
$635American Airlines
Find Deal
Mon, Feb 2 - Tue, Feb 10
Virgin Atlantic Logo
1:23 pm - 4:50 pmORD-BHD
21h 27m2 stops
Virgin Atlantic Logo
6:30 am - 2:20 pmBHD-ORD
13h 50m1 stop
$654Virgin Atlantic
Find Deal
Mon, Dec 8 - Wed, Dec 24
Delta Logo
1:14 pm - 4:50 pmMDW-BHD
21h 36m2 stops
Delta Logo
6:30 am - 5:19 pmBHD-MDW
16h 49m2 stops
$666Delta
Find Deal
Mon, Dec 8 - Wed, Dec 24
Multiple Airlines Logo
6:30 pm - 7:35 pmORD-BHD
19h 05m2 stops
Multiple Airlines Logo
7:25 am - 5:20 pmBHD-ORD
15h 55m2 stops
$719Multiple Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11
Multiple Airlines Logo
6:30 pm - 8:50 pmORD-BHD
20h 20m2 stops
Multiple Airlines Logo
7:25 am - 3:25 pmBHD-ORD
38h 00m3 stops
$738Multiple Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11
Delta Logo
6:10 pm - 4:55 pmORD-BHD
16h 45m2 stops
Delta Logo
6:30 am - 2:20 pmBHD-ORD
13h 50m1 stop
$742Delta
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Fri, Apr 3 - Tue, Apr 7
American Airlines Logo
3:43 pm - 2:15 pmSTL-BHD
16h 32m2 stops
American Airlines Logo
9:10 am - 11:38 pmBHD-STL
20h 28m2 stops
$764American Airlines
Find Deal
Mon, Dec 1 - Sun, Dec 7

Delta flights from Illinois to Belfast City Airport

Our best Delta deals on Illinois to Belfast City Airport flight tickets
Delta
Dec 8
MDW1:14 pmChicago Midway
21h 36m
2 stops
BHD4:50 pmBelfast City
Dec 24
BHD6:30 amBelfast City
16h 49m
2 stops
MDW5:19 pmChicago Midway
$666
Find similar
Delta
Apr 3
ORD6:10 pmChicago O'Hare Intl
16h 45m
2 stops
BHD4:55 pmBelfast City
Apr 7
BHD6:30 amBelfast City
13h 50m
1 stop
ORD2:20 pmChicago O'Hare Intl
$742
Find similar
Delta
Apr 1
MDW9:20 amChicago Midway
25h 35m
2 stops
BHD4:55 pmBelfast City
Apr 5
BHD5:25 pmBelfast City
46h 31m
2 stops
MDW9:56 amChicago Midway
$758
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Aer Lingus flights from Illinois to Belfast City Airport

Our best Aer Lingus deals on Illinois to Belfast City Airport flight tickets
Aer Lingus
Nov 21
ORD3:50 pmChicago O'Hare Intl
14h 50m
2 stops
BHD12:40 pmBelfast City
Nov 28
BHD6:50 amBelfast City
17h 05m
2 stops
ORD5:55 pmChicago O'Hare Intl
$1,252
Find similar
Aer Lingus
Nov 21
ORD7:40 pmChicago O'Hare Intl
15h 45m
2 stops
BHD5:25 pmBelfast City
Nov 28
BHD8:20 amBelfast City
15h 35m
2 stops
ORD5:55 pmChicago O'Hare Intl
$1,307
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated November 5, 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 1/12

6:44 pm-6:35 pm

2 stops17h 51m

Belfast City

Tue 1/20

6:35 am-6:16 pm

2 stops17h 41m

$615

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 1/12

6:44 pm-6:35 pm

2 stops17h 51m

Belfast City

Tue 1/20

11:25 am-10:59 pm

2 stops17h 34m

$618

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 12/8

4:25 pm-4:50 pm

1 stop18h 25m

Belfast City

Wed 12/24

6:30 am-2:20 pm

1 stop13h 50m

$627

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 2/2

3:54 pm-4:05 pm

2 stops18h 11m

Belfast City

Tue 2/10

6:35 am-6:34 pm

2 stops17h 59m

$635

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 12/8

1:23 pm-4:50 pm

2 stops21h 27m

Belfast City

Wed 12/24

6:30 am-2:20 pm

1 stop13h 50m

$654

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Mon 12/8

1:14 pm-4:50 pm

2 stops21h 36m

Belfast City

Wed 12/24

6:30 am-5:19 pm

2 stops16h 49m

$666

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 12/4

6:30 pm-7:35 pm

2 stops19h 05m

Belfast City

Thu 12/11

7:25 am-5:20 pm

2 stops15h 55m

$719

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 12/4

6:30 pm-8:50 pm

2 stops20h 20m

Belfast City

Thu 12/11

7:25 am-3:25 pm

3 stops38h 00m

$738

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 4/3

6:10 pm-4:55 pm

2 stops16h 45m

Belfast City

Tue 4/7

6:30 am-2:20 pm

1 stop13h 50m

$742

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 12/1

3:43 pm-2:15 pm

2 stops16h 32m

Belfast City

Sun 12/7

9:10 am-11:38 pm

2 stops20h 28m

$764

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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 City Airport

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 day to depart on your flight to Belfast City Airport?

On average, the least expensive day to fly to Belfast City Airport from Illinois is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $625. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from Illinois because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $782.

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 are refreshed on a daily basis.

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

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

    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 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.

Best airlines flying from Illinois to Belfast City Airport

Compare and see reviews for airlines that fly from Illinois to Belfast City Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $629Free CancellationRating
6.7
7,496 reviews
Search British Airways flights

Traveling to a place near Belfast?

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

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?

All flight searches from Illinois to Belfast on momondo can be filtered to show those which offer flexible booking policies.

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?

If you are not ready to book a flight from Illinois to Belfast now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Belfast and let you know when they change.

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