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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 1/15. 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 - 9:55 pm
ORD
-
BFS
21h 25m3 stops
Multiple Airlines Logo
7:55 am - 8:18 am
BFS
-
ORD
30h 23m3 stops
$748Multiple Airlines
dom., ene. 18 - dom., ene. 25
Multiple Airlines Logo
5:20 pm - 8:15 pm
ORD
-
BFS
20h 55m2 stops
Multiple Airlines Logo
5:45 am - 5:20 pm
BFS
-
ORD
17h 35m3 stops
$778Multiple Airlines
mar., feb. 10 - mar., feb. 17
Multiple Airlines Logo
6:30 pm - 6:55 pm
ORD
-
BFS
18h 25m2 stops
Multiple Airlines Logo
7:55 am - 8:18 am
BFS
-
ORD
30h 23m3 stops
$808Multiple Airlines
dom., ene. 18 - dom., ene. 25
Multiple Airlines Logo
9:00 pm - 4:00 pm
ORD
-
BFS
13h 00m2 stops
Multiple Airlines Logo
6:30 am - 7:15 pm
BFS
-
ORD
18h 45m2 stops
$816Multiple Airlines
mar., feb. 10 - mar., feb. 17
Multiple Airlines Logo
4:45 pm - 12:55 pm
ORD
-
BFS
15h 10m1 stop
Multiple Airlines Logo
8:55 pm - 12:15 pm
BFS
-
ORD
20h 20m1 stop
$856Multiple Airlines
dom., mar. 8 - dom., mar. 22
Multiple Airlines Logo
6:30 pm - 6:55 pm
ORD
-
BFS
18h 25m2 stops
Multiple Airlines Logo
11:05 pm - 5:20 pm
BFS
-
ORD
24h 15m2 stops
$972Multiple Airlines
dom., ene. 18 - dom., ene. 25
Multiple Airlines Logo
5:20 pm - 2:25 pm
ORD
-
BFS
15h 05m1 stop
Multiple Airlines Logo
8:35 am - 5:20 pm
BFS
-
ORD
14h 45m2 stops
$1,181Multiple Airlines
mar., feb. 10 - mar., feb. 17

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Belfast Intl 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 diciembre 28, 2025.
Use the filters below to find and compare flights from Illinois to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

dom. 1/18

6:30 pm-9:55 pm

3 stops21h 25m

Belfast Intl

dom. 1/25

7:55 am-8:18 am

3 stops30h 23m

$748

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

mar. 2/10

5:20 pm-8:15 pm

2 stops20h 55m

Belfast Intl

mar. 2/17

5:45 am-5:20 pm

3 stops17h 35m

$778

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

dom. 1/18

6:30 pm-6:55 pm

2 stops18h 25m

Belfast Intl

dom. 1/25

7:55 am-8:18 am

3 stops30h 23m

$808

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

mar. 2/10

9:00 pm-4:00 pm

2 stops13h 00m

Belfast Intl

mar. 2/17

6:30 am-7:15 pm

2 stops18h 45m

$816

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

dom. 3/8

4:45 pm-12:55 pm

1 stop15h 10m

Belfast Intl

dom. 3/22

8:55 pm-12:15 pm

1 stop20h 20m

$856

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

dom. 1/18

6:30 pm-6:55 pm

2 stops18h 25m

Belfast Intl

dom. 1/25

11:05 pm-5:20 pm

2 stops24h 15m

$972

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

mar. 2/10

5:20 pm-2:25 pm

1 stop15h 05m

Belfast Intl

mar. 2/17

8:35 am-5:20 pm

2 stops14h 45m

$1,181

ChicagoBelfast

MDW - BFS

MDWBFS

Chicago Midway

jue. 1/15

6:30 pm-10:05 am

3 stops33h 35m

$323

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

jue. 1/15

7:15 am-8:25 pm

3 stops31h 10m

$378

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Belfast from

How to get the cheapest flight ticket from Illinois to Belfast Intl 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 time of day to depart on your flight to Belfast Intl Airport?

In the evening is the cheapest time of day to fly from Illinois to Belfast Intl Airport when you can find flight prices for as low as $769. Flying to Belfast Intl Airport in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Belfast Intl Airport is in the afternoon when prices are around $804.

Cheap Illinois to Belfast Intl Airport flight deals and tips

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

Fastest flight time

12h 05m

Direct flights

None
The fastest flight from Illinois to Belfast Intl Airport takes 12h 05m
There are no direct flights from Illinois to Belfast Intl Airport. There are no popular flight routes from Illinois to Belfast Intl Airport.
Search flight deals

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

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

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

  • How old do you have to be to fly from Illinois to Belfast Intl 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 Intl Airport.

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

    The travel and health documents you'll need for your trip to Belfast Intl 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 Intl 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 Intl Airport

Compare and see reviews for airlines that fly from Illinois to Belfast Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $577Free CancellationRating
6.7
7,616 reviews
Search British Airways flights

Traveling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Armagh
Cookstown
Newry
Dungannon

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Illinois to Belfast. Millions of users trust and use momondo every year so you are in good hands.

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?

momondo helps you find the best flight between Illinois and Belfast by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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.

An easier way to manage your Belfast Intl Airport trip

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1 adult
mar. 1/27
mar. 2/3
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