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Cheap flights from Chicago to Belfast from $337

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 9/30. 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
9:55 am - 8:55 am
ORD
-
BFS
17h 00m
2 stops
Multiple Airlines Logo
10:30 am - 7:25 pm
BFS
-
ORD
38h 55m
3 stops
$994Multiple Airlines
Sat, May 30 - Mon, Jun 8
Multiple Airlines Logo
8:45 am - 10:15 pm
ORD
-
BFS
31h 30m
3 stops
Multiple Airlines Logo
5:55 am - 10:05 pm
BFS
-
ORD
22h 10m
2 stops
$1,004Multiple Airlines
Tue, Jul 21 - Wed, Jul 29
Multiple Airlines Logo
9:55 am - 4:30 pm
ORD
-
BFS
24h 35m
2 stops
Multiple Airlines Logo
6:10 am - 9:00 am
BFS
-
ORD
32h 50m
3 stops
$1,020Multiple Airlines
Fri, Jun 5 - Thu, Jun 11
Multiple Airlines Logo
4:37 pm - 10:15 pm
ORD
-
BFS
23h 38m
2 stops
Multiple Airlines Logo
5:55 am - 10:05 pm
BFS
-
ORD
22h 10m
2 stops
$1,038Multiple Airlines
Tue, Jul 21 - Wed, Jul 29
Multiple Airlines Logo
9:55 am - 4:30 pm
ORD
-
BFS
24h 35m
2 stops
Multiple Airlines Logo
6:10 am - 9:00 am
BFS
-
ORD
32h 50m
3 stops
$1,044Multiple Airlines
Fri, Jun 5 - Thu, Jun 11
Multiple Airlines Logo
8:45 am - 10:15 pm
ORD
-
BFS
31h 30m
3 stops
Multiple Airlines Logo
5:55 am - 8:05 pm
BFS
-
ORD
20h 10m
3 stops
$1,049Multiple Airlines
Tue, Jul 21 - Wed, Jul 29
Multiple Airlines Logo
9:55 am - 4:30 pm
ORD
-
BFS
24h 35m
2 stops
Multiple Airlines Logo
9:10 pm - 8:16 pm
BFS
-
ORD
29h 06m
3 stops
$1,078Multiple Airlines
Fri, Jun 5 - Thu, Jun 11
Multiple Airlines Logo
2:15 pm - 4:30 pm
ORD
-
BFS
20h 15m
2 stops
Multiple Airlines Logo
6:10 am - 9:00 am
BFS
-
ORD
32h 50m
3 stops
$1,080Multiple Airlines
Fri, Jun 5 - Thu, Jun 11
Multiple Airlines Logo
10:25 pm - 8:50 pm
ORD
-
BFS
16h 25m
2 stops
Multiple Airlines Logo
6:55 am - 9:25 pm
BFS
-
ORD
20h 30m
2 stops
$1,081Multiple Airlines
Sat, Aug 1 - Sun, Aug 9
Multiple Airlines Logo
2:20 pm - 7:20 pm
ORD
-
BFS
23h 00m
2 stops
Multiple Airlines Logo
6:35 pm - 6:15 pm
BFS
-
ORD
29h 40m
2 stops
$1,082Multiple Airlines
Mon, Aug 17 - Fri, Aug 21

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 May 11, 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

Cheapest round-trip

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sat 5/30

9:55 am-8:55 am

2 stops17h 00m

Belfast Intl

Mon 6/8

10:30 am-7:25 pm

3 stops38h 55m

$994

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Tue 7/21

8:45 am-10:15 pm

3 stops31h 30m

Belfast Intl

Wed 7/29

5:55 am-10:05 pm

2 stops22h 10m

$1,004

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 6/5

9:55 am-4:30 pm

2 stops24h 35m

Belfast Intl

Thu 6/11

6:10 am-9:00 am

3 stops32h 50m

$1,020

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Tue 7/21

4:37 pm-10:15 pm

2 stops23h 38m

Belfast Intl

Wed 7/29

5:55 am-10:05 pm

2 stops22h 10m

$1,038

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 6/5

9:55 am-4:30 pm

2 stops24h 35m

Belfast Intl

Thu 6/11

6:10 am-9:00 am

3 stops32h 50m

$1,044

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Tue 7/21

8:45 am-10:15 pm

3 stops31h 30m

Belfast Intl

Wed 7/29

5:55 am-8:05 pm

3 stops20h 10m

$1,049

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 6/5

9:55 am-4:30 pm

2 stops24h 35m

Belfast Intl

Thu 6/11

9:10 pm-8:16 pm

3 stops29h 06m

$1,078

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Fri 6/5

2:15 pm-4:30 pm

2 stops20h 15m

Belfast Intl

Thu 6/11

6:10 am-9:00 am

3 stops32h 50m

$1,080
Quickest round-trip

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sat 8/1

10:25 pm-8:50 pm

2 stops16h 25m

Belfast Intl

Sun 8/9

6:55 am-9:25 pm

2 stops20h 30m

$1,081

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Mon 8/17

2:20 pm-7:20 pm

2 stops23h 00m

Belfast Intl

Fri 8/21

6:35 pm-6:15 pm

2 stops29h 40m

$1,082

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 45m

Direct flights

None
The fastest flight from Chicago to Belfast Intl Airport takes 11h 45m
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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Frequently asked questions about flying from Chicago to Belfast Intl Airport

  • 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 45m, 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
7,969 reviews
Search British Airways flights

Frequently asked questions about flying from Chicago to Belfast Intl Airport

  • 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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