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Cheap flights from Chicago to Belfast from $299

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 4/12. 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
0 bags

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Find the cheapest flights from Chicago to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:30 pm - 8:30 pm
ORD
-
BFS
20h 00m
2 stops
Multiple Airlines Logo
8:55 am - 6:20 pm
BFS
-
ORD
38h 25m
2 stops
$554Multiple Airlines
Sun, Mar 1 - Sun, Mar 8
Multiple Airlines Logo
6:30 pm - 4:10 pm
ORD
-
BFS
15h 40m
2 stops
Multiple Airlines Logo
7:55 am - 6:20 pm
BFS
-
ORD
15h 25m
2 stops
$595Multiple Airlines
Wed, Mar 4 - Wed, Mar 11
Multiple Airlines Logo
6:30 pm - 8:10 pm
ORD
-
BFS
19h 40m
2 stops
Multiple Airlines Logo
8:35 am - 6:20 pm
BFS
-
ORD
14h 45m
2 stops
$657Multiple Airlines
Mon, Mar 2 - Mon, Mar 9
Multiple Airlines Logo
6:30 pm - 7:05 pm
ORD
-
BFS
18h 35m
2 stops
Multiple Airlines Logo
10:20 pm - 4:00 pm
BFS
-
ORD
46h 40m
3 stops
$670Multiple Airlines
Mon, Mar 2 - Mon, Mar 9
Multiple Airlines Logo
6:51 pm - 8:10 pm
ORD
-
BFS
19h 19m
3 stops
Multiple Airlines Logo
10:20 pm - 4:00 pm
BFS
-
ORD
46h 40m
3 stops
$745Multiple Airlines
Mon, Mar 2 - Mon, Mar 9
Multiple Airlines Logo
6:50 pm - 6:55 pm
ORD
-
BFS
18h 05m
2 stops
Multiple Airlines Logo
6:30 am - 7:54 am
BFS
-
ORD
31h 24m
3 stops
$765Multiple Airlines
Sun, Feb 22 - Fri, Feb 27
Multiple Airlines Logo
12:50 pm - 6:55 pm
ORD
-
BFS
24h 05m
3 stops
Multiple Airlines Logo
6:30 am - 7:54 am
BFS
-
ORD
31h 24m
3 stops
$770Multiple Airlines
Sun, Feb 22 - Fri, Feb 27
Multiple Airlines Logo
11:25 am - 3:10 pm
ORD
-
BFS
21h 45m
2 stops
Multiple Airlines Logo
1:25 pm - 9:40 am
BFS
-
ORD
26h 15m
2 stops
$833Multiple Airlines
Fri, Apr 3 - Sun, Apr 12
Multiple Airlines Logo
10:55 am - 3:35 pm
ORD
-
BFS
23h 40m
3 stops
Multiple Airlines Logo
7:55 am - 9:00 pm
BFS
-
ORD
42h 05m
3 stops
$837Multiple Airlines
Wed, Mar 18 - Wed, Mar 25
Multiple Airlines Logo
12:50 pm - 2:10 pm
ORD
-
BFS
20h 20m
2 stops
Multiple Airlines Logo
10:10 am - 9:05 pm
BFS
-
ORD
15h 55m
2 stops
$849Multiple Airlines
Wed, Mar 18 - Wed, Mar 25

momondo Fare Finder

 
Customize your flight search to find flights from Chicago 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 February 3, 2026.
Use the filters below to find and compare flights from Chicago 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

Sun 3/1

6:30 pm-8:30 pm

2 stops20h 00m

Belfast Intl

Sun 3/8

8:55 am-6:20 pm

2 stops38h 25m

$554

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 3/4

6:30 pm-4:10 pm

2 stops15h 40m

Belfast Intl

Wed 3/11

7:55 am-6:20 pm

2 stops15h 25m

$595

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 3/2

6:30 pm-8:10 pm

2 stops19h 40m

Belfast Intl

Mon 3/9

8:35 am-6:20 pm

2 stops14h 45m

$657

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 3/2

6:30 pm-7:05 pm

2 stops18h 35m

Belfast Intl

Mon 3/9

10:20 pm-4:00 pm

3 stops46h 40m

$670

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 3/2

6:51 pm-8:10 pm

3 stops19h 19m

Belfast Intl

Mon 3/9

10:20 pm-4:00 pm

3 stops46h 40m

$745

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 2/22

6:50 pm-6:55 pm

2 stops18h 05m

Belfast Intl

Fri 2/27

6:30 am-7:54 am

3 stops31h 24m

$765

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 2/22

12:50 pm-6:55 pm

3 stops24h 05m

Belfast Intl

Fri 2/27

6:30 am-7:54 am

3 stops31h 24m

$770

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 4/3

11:25 am-3:10 pm

2 stops21h 45m

Belfast Intl

Sun 4/12

1:25 pm-9:40 am

2 stops26h 15m

$833

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 3/18

10:55 am-3:35 pm

3 stops23h 40m

Belfast Intl

Wed 3/25

7:55 am-9:00 pm

3 stops42h 05m

$837

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 3/18

12:50 pm-2:10 pm

2 stops20h 20m

Belfast Intl

Wed 3/25

10:10 am-9:05 pm

2 stops15h 55m

$849

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

When to book flights from Chicago to Belfast Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Belfast Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago to Belfast Intl Airport (CHI to BFS) flight deals and tips

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

Fastest flight time

11h 00m

Direct flights

None
The fastest flight from Chicago to Belfast Intl Airport takes 11h 00m
There are no direct flights from Chicago to Belfast Intl Airport. There are no popular flight routes from Chicago to Belfast Intl Airport.
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  • How far is Chicago to Belfast Intl by plane?

    Chicago and Belfast Intl are 3624.6 mi apart from one another. Flights usually cover this in 11h 00m, depending on flying conditions and air traffic around both airports.

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

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

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

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

    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 Intl Airport.

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

    The necessary travel and health documents for your Belfast Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Chicago to Belfast Intl Airport?

Best airlines flying from Chicago to Belfast Intl Airport

Compare and see reviews for airlines that fly from Chicago to Belfast Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $577Free CancellationRating
6.7
7,712 reviews
Search British Airways flights

  • How do I get Price Alerts for flights from Chicago to Belfast Intl Airport?

    Price Alerts will notify you by email when the price for flights to Belfast Intl Airport from Chicago decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Chicago to Belfast Intl Airport with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Traveling to a place near Belfast?

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

Why use momondo?

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

Finding the right flight to Belfast from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Belfast quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Belfast from Chicago with this policy.

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?

If you are simply researching potential flights to Belfast, momondo offers a useful price alert feature which will track prices for flights to Belfast from Chicago and alert you when they change.

An easier way to manage your Belfast Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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