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Cheap flights from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport 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 O'Hare Intl Airport to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:50 am - 7:15 pm
ORD
-
BFS
28h 25m
2 stops
Multiple Airlines Logo
9:55 pm - 5:52 am
BFS
-
ORD
37h 57m
3 stops
$898Multiple Airlines
Wed, Jun 10 - Mon, Jun 15
Multiple Airlines Logo
4:37 pm - 6:55 pm
ORD
-
BFS
20h 18m
2 stops
Multiple Airlines Logo
6:10 am - 10:05 pm
BFS
-
ORD
45h 55m
3 stops
$974Multiple Airlines
Thu, Jun 11 - Thu, Jun 18
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
3:45 pm - 4:30 pm
ORD
-
BFS
18h 45m
2 stops
Multiple Airlines Logo
9:10 pm - 5:52 am
BFS
-
ORD
38h 42m
3 stops
$1,038Multiple Airlines
Fri, Jun 5 - Thu, Jun 11
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
11:05 am - 8:55 pm
ORD
-
BFS
27h 50m
3 stops
Multiple Airlines Logo
6:30 am - 6:20 pm
BFS
-
ORD
16h 50m
2 stops
$1,068Multiple Airlines
Mon, Oct 19 - Wed, Oct 28
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

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport 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 13, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport 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

Wed 6/10

8:50 am-7:15 pm

2 stops28h 25m

Belfast Intl

Mon 6/15

9:55 pm-5:52 am

3 stops37h 57m

$898

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Thu 6/11

4:37 pm-6:55 pm

2 stops20h 18m

Belfast Intl

Thu 6/18

6:10 am-10:05 pm

3 stops45h 55m

$974

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

Fri 6/5

3:45 pm-4:30 pm

2 stops18h 45m

Belfast Intl

Thu 6/11

9:10 pm-5:52 am

3 stops38h 42m

$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

Mon 10/19

11:05 am-8:55 pm

3 stops27h 50m

Belfast Intl

Wed 10/28

6:30 am-6:20 pm

2 stops16h 50m

$1,068
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

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
1
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When to book flights from Chicago O'Hare Intl Airport to Belfast Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Belfast Intl Airport (ORD to BFS) flight deals and tips

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

Fastest flight time

11h 00m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to Belfast Intl Airport takes 11h 00m
There are no direct flights from Chicago O'Hare Intl Airport to Belfast Intl Airport. There are no popular flight routes from Chicago O'Hare Intl Airport to Belfast Intl Airport.
Search flight deals

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Belfast Intl Airport

  • How far is Chicago O'Hare Intl to Belfast Intl by plane?

    A flight from Chicago O'Hare Intl to Belfast Intl will travel around 3629.9 mi. 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 O'Hare Intl Airport to Belfast Intl Airport?

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

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

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

Best airlines flying from Chicago O'Hare Intl Airport to Belfast Intl Airport

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Belfast Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $577Free CancellationRating
6.7
7,975 reviews
Search British Airways flights

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Belfast Intl Airport

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

    Search flight deals from Chicago O'Hare Intl Airport to Belfast Intl Airport. While viewing offers you’ll have the option to create a Price Alert.

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

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • 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?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to Belfast. momondo saves you time and could save you money on your trip.

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 you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Belfast from Chicago.

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

If you are not ready to book a flight from Chicago to Belfast now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Belfast and let you know 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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