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Cheap flights from Chicago to Belfast from $312

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Belfast departing on 9/12. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:25 pm - 9:10 pm
ORD
-
BFS
19h 45m
2 stops
Multiple Airlines Logo
9:05 pm - 6:15 pm
BFS
-
ORD
27h 10m
3 stops
$809Multiple Airlines
Wed, Oct 7 - Wed, Oct 21
Multiple Airlines Logo
7:25 pm - 11:10 pm
ORD
-
BFS
21h 45m
3 stops
Multiple Airlines Logo
9:05 pm - 6:15 pm
BFS
-
ORD
27h 10m
3 stops
$836Multiple Airlines
Wed, Oct 7 - Wed, Oct 21
Multiple Airlines Logo
5:35 pm - 6:50 pm
ORD
-
BFS
19h 15m
2 stops
Multiple Airlines Logo
9:35 pm - 4:58 pm
BFS
-
ORD
25h 23m
2 stops
$843Multiple Airlines
Sun, Sep 13 - Mon, Sep 21
British Airways Logo
5:00 pm - 1:35 pm
ORD
-
BHD
14h 35m
1 stop
British Airways Logo
6:30 am - 3:55 pm
BHD
-
ORD
15h 25m
1 stop
$867British Airways
Wed, Oct 7 - Wed, Oct 21
British Airways Logo
9:50 pm - 4:50 pm
ORD
-
BHD
13h 00m
1 stop
British Airways Logo
8:00 pm - 1:50 pm
BHD
-
ORD
23h 50m
1 stop
$885British Airways
Sun, Nov 1 - Thu, Nov 19
American Airlines Logo
3:08 pm - 10:15 am
ORD
-
BHD
13h 07m
2 stops
American Airlines Logo
6:35 am - 7:15 pm
BHD
-
ORD
18h 40m
1 stop
$887American Airlines
Wed, Nov 4 - Wed, Nov 18
Delta Logo
4:20 pm - 9:20 am
ORD
-
BHD
11h 00m
1 stop
Delta Logo
5:30 pm - 2:15 pm
BHD
-
ORD
26h 45m
1 stop
$904Delta
Sun, Oct 4 - Mon, Oct 19
Delta Logo
3:50 pm - 4:50 pm
ORD
-
BHD
19h 00m
2 stops
Delta Logo
5:20 pm - 2:25 pm
BHD
-
ORD
27h 05m
1 stop
$908Delta
Sun, Nov 1 - Wed, Nov 18
KLM Logo
1:05 pm - 5:50 pm
MDW
-
BHD
22h 45m
2 stops
KLM Logo
5:20 pm - 4:50 pm
BHD
-
MDW
29h 30m
2 stops
$968KLM
Sat, Oct 24 - Wed, Nov 4
KLM Logo
1:27 pm - 9:20 am
MDW
-
BHD
13h 53m
2 stops
KLM Logo
9:50 am - 10:36 pm
BHD
-
MDW
18h 46m
2 stops
$1,806KLM
Fri, Aug 14 - Thu, Aug 20

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Aer Lingus flights from Chicago to Belfast

Our best Aer Lingus deals on Chicago to Belfast flight tickets
Aer Lingus
Aug 3
ORD3:45 pmChicago O'Hare Intl
15h 25m
2 stops
BHD1:10 pmBelfast City
Aug 6
BHD9:50 amBelfast City
15h 25m
2 stops
ORD7:15 pmChicago O'Hare Intl
$1,152
Aer Lingus
Nov 3
ORD3:55 pmChicago O'Hare Intl
15h 55m
2 stops
BHD1:50 pmBelfast City
Nov 17
BHD7:00 amBelfast City
17h 25m
2 stops
ORD6:25 pmChicago O'Hare Intl
$1,201
Aer Lingus
Oct 6
ORD3:45 pmChicago O'Hare Intl
14h 10m
2 stops
BHD11:55 amBelfast City
Oct 20
BHD6:20 pmBelfast City
25h 40m
2 stops
ORD2:00 pmChicago O'Hare Intl
$1,232

KLM flights from Chicago to Belfast

Our best KLM deals on Chicago to Belfast flight tickets
KLM
Aug 24
ORD12:29 pmChicago O'Hare Intl
14h 51m
2 stops
BHD9:20 amBelfast City
Aug 31
BHD5:30 pmBelfast City
26h 45m
1 stop
ORD2:15 pmChicago O'Hare Intl
$962
KLM
Oct 24
MDW1:05 pmChicago Midway
22h 45m
2 stops
BHD5:50 pmBelfast City
Nov 4
BHD5:20 pmBelfast City
29h 30m
2 stops
MDW4:50 pmChicago Midway
$968
KLM
Aug 24
ORD12:29 pmChicago O'Hare Intl
14h 51m
2 stops
BHD9:20 amBelfast City
Aug 31
BHD5:30 pmBelfast City
27h 31m
2 stops
ORD3:01 pmChicago O'Hare Intl
$972

momondo Fare Finder

 
Customize your flight search to find flights from Chicago 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 June 23, 2026.
Use the filters below to find and compare flights from Chicago to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 10/7

7:25 pm-9:10 pm

2 stops19h 45m

Belfast Intl

Wed 10/21

9:05 pm-6:15 pm

3 stops27h 10m

$809

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 10/7

7:25 pm-11:10 pm

3 stops21h 45m

Belfast Intl

Wed 10/21

9:05 pm-6:15 pm

3 stops27h 10m

$836

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 9/13

5:35 pm-6:50 pm

2 stops19h 15m

Belfast Intl

Mon 9/21

9:35 pm-4:58 pm

2 stops25h 23m

$843
Quickest round-trip

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 10/7

5:00 pm-1:35 pm

1 stop14h 35m

Belfast City

Wed 10/21

6:30 am-3:55 pm

1 stop15h 25m

$867

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 11/1

9:50 pm-4:50 pm

1 stop13h 00m

Belfast City

Thu 11/19

8:00 pm-1:50 pm

1 stop23h 50m

$885

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 11/4

3:08 pm-10:15 am

2 stops13h 07m

Belfast City

Wed 11/18

6:35 am-7:15 pm

1 stop18h 40m

$887

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 10/4

4:20 pm-9:20 am

1 stop11h 00m

Belfast City

Mon 10/19

5:30 pm-2:15 pm

1 stop26h 45m

$904

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 11/1

3:50 pm-4:50 pm

2 stops19h 00m

Belfast City

Wed 11/18

5:20 pm-2:25 pm

1 stop27h 05m

$908

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Sat 10/24

1:05 pm-5:50 pm

2 stops22h 45m

Belfast City

Wed 11/4

5:20 pm-4:50 pm

2 stops29h 30m

$968

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Fri 8/14

1:27 pm-9:20 am

2 stops13h 53m

Belfast City

Thu 8/20

9:50 am-10:36 pm

2 stops18h 46m

$1,806

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 Chicago 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 Chicago to Belfast?

KLM and Delta are the most popular carriers operating from Chicago to Belfast

Cheap Chicago to Belfast flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Belfast

Fastest flight time

10h 25m

Direct flights

None
The fastest flight from Chicago to Belfast takes 10h 25m
There are no direct flights from Chicago to Belfast. There are no popular flight routes from Chicago to Belfast.
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Frequently asked questions about flying from Chicago to Belfast

  • How far is Chicago to Belfast by plane?

    Chicago and Belfast are 3636.7 mi apart from one another. Typically, this will take 10h 25m by plane in normal conditions.

  • When did momondo last update prices for flights from Chicago to Belfast?

    Prices for flights from Chicago to Belfast were last updated today.

  • How many operators does momondo search for flights from Chicago to Belfast?

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Belfast.

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

    The travel and health documents required for your trip to Belfast can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Belfast. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Chicago to Belfast

Compare and see reviews for airlines that fly from Chicago to Belfast with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $577Free CancellationRating
6.7
8,065 reviews
Search British Airways flights

Why use momondo?

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

It is quick and easy to find Chicago to Belfast flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Belfast that suits you.

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

Flights from Chicago 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 Chicago to Belfast?

Once all potential Chicago to Belfast flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Chicago 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