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Cheap flights from Chicago O'Hare Intl Airport to Belfast from $751

This is the cheapest round-trip 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 10/4. 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 O'Hare Intl Airport to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:25 pm - 9:50 pmORD  Chicago O'Hare Intl-BFS Belfast Intl
20h 25m2 stops Reykjavik Keflavik Intl Manchester
Multiple Airlines Logo
8:10 pm - 6:15 pmBFS  Belfast Intl-ORD Chicago O'Hare Intl
28h 05m3 stops London Luton Gdansk Rebiechowo Reykjavik Keflavik Intl
$751Multiple Airlines
Sun, Oct 4 - Wed, Oct 14
Multiple Airlines Logo
7:25 pm - 10:30 pmORD  Chicago O'Hare Intl-BFS Belfast Intl
21h 05m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen Bristol
Multiple Airlines Logo
8:10 pm - 6:15 pmBFS  Belfast Intl-ORD Chicago O'Hare Intl
28h 05m3 stops London Luton Gdansk Rebiechowo Reykjavik Keflavik Intl
$795Multiple Airlines
Sun, Oct 4 - Wed, Oct 14
Multiple Airlines Logo
7:25 pm - 8:55 pmORD  Chicago O'Hare Intl-BFS Belfast Intl
19h 30m2 stops Reykjavik Keflavik Intl Manchester
Multiple Airlines Logo
9:10 am - 2:15 pmBFS  Belfast Intl-ORD Chicago O'Hare Intl
35h 05m2 stops Barcelona-El Prat Amsterdam Schiphol
$812Multiple Airlines
Mon, Sep 28 - Mon, Oct 5
Multiple Airlines Logo
7:25 pm - 9:50 pmORD  Chicago O'Hare Intl-BFS Belfast Intl
20h 25m2 stops Reykjavik Keflavik Intl Manchester
Multiple Airlines Logo
7:35 am - 4:00 pmBFS  Belfast Intl-ORD Chicago O'Hare Intl
38h 25m3 stops Manchester Madrid Barajas Lisbon Humberto Delgado
$816Multiple Airlines
Sun, Sep 13 - Tue, Sep 29
Multiple Airlines Logo
7:25 pm - 9:10 pmORD  Chicago O'Hare Intl-BFS Belfast Intl
19h 45m2 stops Reykjavik Keflavik Intl Glasgow Intl
Multiple Airlines Logo
9:35 am - 12:40 pmBFS  Belfast Intl-ORD Chicago O'Hare Intl
33h 05m2 stops Barcelona-El Prat Lisbon Humberto Delgado
$822Multiple Airlines
Wed, Sep 30 - Wed, Oct 7
Multiple Airlines Logo
7:25 pm - 8:55 pmORD  Chicago O'Hare Intl-BFS Belfast Intl
19h 30m2 stops Reykjavik Keflavik Intl Manchester
Multiple Airlines Logo
9:10 am - 2:15 pmBFS  Belfast Intl-ORD Chicago O'Hare Intl
35h 05m2 stops Barcelona-El Prat Amsterdam Schiphol
$823Multiple Airlines
Mon, Sep 28 - Mon, Oct 5
Multiple Airlines Logo
7:25 pm - 8:55 pmORD  Chicago O'Hare Intl-BFS Belfast Intl
19h 30m2 stops Reykjavik Keflavik Intl Manchester
Multiple Airlines Logo
9:10 am - 2:15 pmBFS  Belfast Intl-ORD Chicago O'Hare Intl
35h 05m2 stops Barcelona-El Prat Amsterdam Schiphol
$825Multiple Airlines
Mon, Sep 28 - Mon, Oct 5
Multiple Airlines Logo
10:25 pm - 9:10 pmORD  Chicago O'Hare Intl-BFS Belfast Intl
16h 45m2 stops Reykjavik Keflavik Intl Glasgow Intl
Multiple Airlines Logo
9:35 am - 12:40 pmBFS  Belfast Intl-ORD Chicago O'Hare Intl
33h 05m2 stops Barcelona-El Prat Lisbon Humberto Delgado
$827Multiple Airlines
Wed, Sep 30 - Wed, Oct 7
Multiple Airlines Logo
7:25 pm - 9:50 pmORD  Chicago O'Hare Intl-BFS Belfast Intl
20h 25m2 stops Reykjavik Keflavik Intl Manchester
Multiple Airlines Logo
7:35 am - 4:00 pmBFS  Belfast Intl-ORD Chicago O'Hare Intl
38h 25m3 stops Manchester Madrid Barajas Lisbon Humberto Delgado
$829Multiple Airlines
Sun, Sep 13 - Tue, Sep 29
Multiple Airlines Logo
7:25 pm - 8:55 pmORD  Chicago O'Hare Intl-BFS Belfast Intl
19h 30m2 stops Reykjavik Keflavik Intl Manchester
Multiple Airlines Logo
9:10 am - 2:15 pmBFS  Belfast Intl-ORD Chicago O'Hare Intl
35h 05m2 stops Barcelona-El Prat Amsterdam Schiphol
$830Multiple Airlines
Mon, Sep 28 - Mon, Oct 5

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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 August 18, 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
Quickest round-trip

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Sun 10/4

7:25 pm-9:50 pm

2 stops20h 25m

Belfast Intl

Wed 10/14

8:10 pm-6:15 pm

3 stops28h 05m

$751

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Sun 10/4

7:25 pm-10:30 pm

3 stops21h 05m

Belfast Intl

Wed 10/14

8:10 pm-6:15 pm

3 stops28h 05m

$795

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Mon 9/28

7:25 pm-8:55 pm

2 stops19h 30m

Belfast Intl

Mon 10/5

9:10 am-2:15 pm

2 stops35h 05m

$812

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Sun 9/13

7:25 pm-9:50 pm

2 stops20h 25m

Belfast Intl

Tue 9/29

7:35 am-4:00 pm

3 stops38h 25m

$816

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Wed 9/30

7:25 pm-9:10 pm

2 stops19h 45m

Belfast Intl

Wed 10/7

9:35 am-12:40 pm

2 stops33h 05m

$822

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Mon 9/28

7:25 pm-8:55 pm

2 stops19h 30m

Belfast Intl

Mon 10/5

9:10 am-2:15 pm

2 stops35h 05m

$823

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Mon 9/28

7:25 pm-8:55 pm

2 stops19h 30m

Belfast Intl

Mon 10/5

9:10 am-2:15 pm

2 stops35h 05m

$825

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Wed 9/30

10:25 pm-9:10 pm

2 stops16h 45m

Belfast Intl

Wed 10/7

9:35 am-12:40 pm

2 stops33h 05m

$827

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Sun 9/13

7:25 pm-9:50 pm

2 stops20h 25m

Belfast Intl

Tue 9/29

7:35 am-4:00 pm

3 stops38h 25m

$829

ChicagoBelfast

ORD Chicago O'Hare Intl - BFS Belfast Intl

ORDBFS

Chicago O'Hare Intl

Mon 9/28

7:25 pm-8:55 pm

2 stops19h 30m

Belfast Intl

Mon 10/5

9:10 am-2:15 pm

2 stops35h 05m

$830

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

Best Price Found

$751

Fastest flight time

11h 20m

Direct flights

None
The best flight deal from Chicago O'Hare Intl Airport to Belfast Intl Airport found on momondo in the last 72 hours is $751
The fastest flight from Chicago O'Hare Intl Airport to Belfast Intl Airport takes 11h 20m
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 20m, 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 $662Free CancellationRating
6.7
8,174 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
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.

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