What is the cheapest airline that flies from Chicago to Belfast?

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

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?

The number of operators available for flights from Chicago to Belfast is 1 as of December 2025.

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.

$249 Cheap Flights from Chicago to Belfast in 2025/26

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Find the cheapest flights from Chicago to Belfast

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:30 pm - 7:05 pm

ORD

BFS

18h 35m2 stops

6:50 pm - 5:20 pm

BFS

ORD

28h 30m3 stops

$616Multiple Airlines

Mon, Feb 2 - Mon, Feb 9

6:54 pm - 4:05 pm

ORD

BHD

16h 11m2 stops

12:10 pm - 7:15 am

BHD

ORD

24h 05m2 stops

$702British Airways

Mon, Mar 16 - Sun, Mar 22

9:45 pm - 4:35 pm

ORD

BHD

12h 50m1 stop

5:35 pm - 1:50 pm

BHD

ORD

26h 15m1 stop

$703British Airways

Wed, Feb 11 - Sun, Feb 15

5:10 pm - 2:15 pm

ORD

BHD

15h 05m1 stop

6:30 am - 1:50 pm

BHD

ORD

13h 20m1 stop

$704British Airways

Wed, Mar 4 - Sun, Mar 8

6:10 pm - 10:40 am

ORD

BHD

11h 30m1 stop

12:10 pm - 7:15 am

BHD

ORD

24h 05m2 stops

$705British Airways

Mon, Mar 16 - Sun, Mar 22

5:25 pm - 4:50 pm

ORD

BHD

18h 25m1 stop

5:20 pm - 3:20 pm

BHD

ORD

27h 00m1 stop

$716Multiple Airlines

Sun, Mar 15 - Sun, Mar 22

5:39 pm - 4:50 pm

ORD

BHD

18h 11m2 stops

5:20 pm - 3:20 pm

BHD

ORD

27h 00m1 stop

$721Multiple Airlines

Sun, Mar 15 - Sun, Mar 22

9:45 pm - 6:50 pm

ORD

BHD

15h 05m1 stop

10:40 am - 6:45 pm

BHD

ORD

14h 05m1 stop

$723British Airways

Thu, Jan 29 - Sun, Feb 1

10:45 pm - 2:15 pm

ORD

BHD

10h 30m1 stop

12:10 pm - 7:15 am

BHD

ORD

24h 05m2 stops

$726British Airways

Wed, Mar 18 - Sun, Mar 22

1:49 pm - 4:50 pm

MDW

BHD

21h 01m2 stops

5:20 pm - 5:29 pm

BHD

MDW

30h 09m2 stops

$790Delta

Thu, Jan 29 - Sun, Feb 1

British Airways flights from Chicago to Belfast

Our best British Airways deals on Chicago to Belfast flight tickets

British Airways

Mar 16

ORD6:54 pmChicago O'Hare Intl

16h 11m

2 stops

BHD4:05 pmBelfast City

Mar 22

BHD12:10 pmBelfast City

24h 05m

2 stops

ORD7:15 amChicago O'Hare Intl

$702

Find similar

British Airways

Feb 11

ORD9:45 pmChicago O'Hare Intl

12h 50m

1 stop

BHD4:35 pmBelfast City

Feb 15

BHD5:35 pmBelfast City

26h 15m

1 stop

ORD1:50 pmChicago O'Hare Intl

$703

Find similar

British Airways

Mar 4

ORD5:10 pmChicago O'Hare Intl

15h 05m

1 stop

BHD2:15 pmBelfast City

Mar 8

BHD6:30 amBelfast City

13h 20m

1 stop

ORD1:50 pmChicago O'Hare Intl

$704

Find similar

Delta flights from Chicago to Belfast

Our best Delta deals on Chicago to Belfast flight tickets

Delta

Mar 15

ORD5:39 pmChicago O'Hare Intl

22h 21m

2 stops

BHD9:00 pmBelfast City

Mar 23

BHD6:30 amBelfast City

20h 31m

2 stops

ORD10:01 pmChicago O'Hare Intl

$789

Find similar

Delta

Jan 29

MDW1:49 pmChicago Midway

21h 01m

2 stops

BHD4:50 pmBelfast City

Feb 1

BHD5:20 pmBelfast City

30h 09m

2 stops

MDW5:29 pmChicago Midway

$790

Find similar

Delta

Mar 17

ORD5:50 pmChicago O'Hare Intl

22h 10m

2 stops

BHD9:00 pmBelfast City

Mar 22

BHD6:30 amBelfast City

13h 50m

1 stop

ORD3:20 pmChicago O'Hare Intl

$1,118

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 2/2

6:30 pm-7:05 pm

2 stops18h 35m

Belfast Intl

Mon 2/9

6:50 pm-5:20 pm

3 stops28h 30m

$616

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 3/16

6:54 pm-4:05 pm

2 stops16h 11m

Belfast City

Sun 3/22

12:10 pm-7:15 am

2 stops24h 05m

$702

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 2/11

9:45 pm-4:35 pm

1 stop12h 50m

Belfast City

Sun 2/15

5:35 pm-1:50 pm

1 stop26h 15m

$703

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 3/4

5:10 pm-2:15 pm

1 stop15h 05m

Belfast City

Sun 3/8

6:30 am-1:50 pm

1 stop13h 20m

$704

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 3/16

6:10 pm-10:40 am

1 stop11h 30m

Belfast City

Sun 3/22

12:10 pm-7:15 am

2 stops24h 05m

$705

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 3/15

5:25 pm-4:50 pm

1 stop18h 25m

Belfast City

Sun 3/22

5:20 pm-3:20 pm

1 stop27h 00m

$716

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 3/15

5:39 pm-4:50 pm

2 stops18h 11m

Belfast City

Sun 3/22

5:20 pm-3:20 pm

1 stop27h 00m

$721

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 1/29

9:45 pm-6:50 pm

1 stop15h 05m

Belfast City

Sun 2/1

10:40 am-6:45 pm

1 stop14h 05m

$723

ChicagoBelfast

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 3/18

10:45 pm-2:15 pm

1 stop10h 30m

Belfast City

Sun 3/22

12:10 pm-7:15 am

2 stops24h 05m

$726

ChicagoBelfast

MDW - BHD

MDWBHD

Chicago Midway

Thu 1/29

1:49 pm-4:50 pm

2 stops21h 01m

Belfast City

Sun 2/1

5:20 pm-5:29 pm

2 stops30h 09m

$790

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

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

Prices

Airlines

What is the cheapest day to depart on your flight to Belfast?

The cheapest day to depart from Chicago to Belfast is on a Wednesday when prices can be found for as low as $649. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Chicago to Belfast for around $938.

What is the cheapest time of day to depart on your flight to Belfast?

Our data shows that the cheapest Chicago to Belfast flights are usually those with departure times in the evening. Our users have found flights to Belfast in the evening for as low as $769. Try not to purchase tickets in the afternoon because they tend to be around $804. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 50m
Direct flights	None

The fastest flight from Chicago to Belfast takes 10h 50m

There are no direct flights from Chicago to Belfast. There are no popular flight routes from Chicago to Belfast.

Search flight deals

How far is Chicago to Belfast by plane?
Chicago and Belfast are 3636.7 mi apart from one another. Typically, this will take 10h 50m 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?
The number of operators available for flights from Chicago to Belfast is 1 as of December 2025.
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 Airways	PriceFrom $577	Free Cancellation	Rating 6.7 7,600 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.