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Cheap flights from Belfast Intl Airport to Chicago from £281

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belfast Intl Airport to Chicago departing on 29/9. 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

Find the cheapest flights from Belfast Intl Airport to Chicago

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:10 - 20:41BFS  Belfast Intl-ORD Chicago O'Hare Intl
44h 31m3 stops London Gatwick Montreal Pierre Elliott Trudeau Intl Toronto Island
Multiple Airlines Logo
19:25 - 20:55ORD  Chicago O'Hare Intl-BFS Belfast Intl
19h 30m2 stops Reykjavik Keflavik Intl Manchester
£607Multiple Airlines
Mon, 21 Sep - Mon, 28 Sep
Multiple Airlines Logo
06:10 - 09:00BFS  Belfast Intl-ORD Chicago O'Hare Intl
32h 50m3 stops London Gatwick Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Multiple Airlines Logo
22:25 - 21:10ORD  Chicago O'Hare Intl-BFS Belfast Intl
16h 45m2 stops Reykjavik Keflavik Intl Glasgow Intl
£611Multiple Airlines
Wed, 23 Sep - Wed, 30 Sep
Multiple Airlines Logo
13:50 - 16:10BFS  Belfast Intl-ORD Chicago O'Hare Intl
32h 20m2 stops Manchester Kastrup Copenhagen
Multiple Airlines Logo
19:15 - 22:20ORD  Chicago O'Hare Intl-BFS Belfast Intl
21h 05m2 stops Kastrup Copenhagen Manchester
£620Multiple Airlines
Wed, 23 Sep - Wed, 30 Sep
Multiple Airlines Logo
07:30 - 19:15BFS  Belfast Intl-ORD Chicago O'Hare Intl
17h 45m2 stops Manchester Dublin
Multiple Airlines Logo
15:45 - 21:05ORD  Chicago O'Hare Intl-BFS Belfast Intl
23h 20m2 stops Dublin Manchester
£632Multiple Airlines
Wed, 23 Sep - Wed, 30 Sep
Multiple Airlines Logo
06:10 - 19:48BFS  Belfast Intl-ORD Chicago O'Hare Intl
19h 38m2 stops London Gatwick Toronto Pearson Intl
Multiple Airlines Logo
09:55 - 17:55ORD  Chicago O'Hare Intl-BFS Belfast Intl
26h 00m3 stops Toronto Pearson Intl Madrid Barajas London Stansted
£642Multiple Airlines
Wed, 23 Sep - Wed, 30 Sep
Multiple Airlines Logo
06:10 - 20:12BFS  Belfast Intl-ORD Chicago O'Hare Intl
20h 02m3 stops London Gatwick Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
19:25 - 20:55ORD  Chicago O'Hare Intl-BFS Belfast Intl
19h 30m2 stops Reykjavik Keflavik Intl Manchester
£650Multiple Airlines
Mon, 21 Sep - Mon, 28 Sep
Multiple Airlines Logo
20:55 - 20:41BFS  Belfast Intl-ORD Chicago O'Hare Intl
29h 46m3 stops London Gatwick Ottawa Toronto Island
Multiple Airlines Logo
14:15 - 16:15ORD  Chicago O'Hare Intl-BFS Belfast Intl
20h 00m3 stops Toronto Pearson Intl Madrid Barajas London Stansted
£653Multiple Airlines
Mon, 21 Sep - Mon, 28 Sep
Multiple Airlines Logo
20:55 - 20:41BFS  Belfast Intl-ORD Chicago O'Hare Intl
29h 46m3 stops London Gatwick Ottawa Toronto Island
Multiple Airlines Logo
19:25 - 16:15ORD  Chicago O'Hare Intl-BFS Belfast Intl
14h 50m2 stops Reykjavik Keflavik Intl Glasgow Intl
£660Multiple Airlines
Mon, 7 Sep - Mon, 14 Sep
Multiple Airlines Logo
08:15 - 20:12BFS  Belfast Intl-ORD Chicago O'Hare Intl
17h 57m2 stops London Gatwick Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
19:25 - 15:35ORD  Chicago O'Hare Intl-BFS Belfast Intl
14h 10m2 stops Reykjavik Keflavik Intl Manchester
£667Multiple Airlines
Mon, 21 Sep - Mon, 28 Sep
Multiple Airlines Logo
08:15 - 22:05BFS  Belfast Intl-ORD Chicago O'Hare Intl
19h 50m2 stops London Gatwick Toronto Pearson Intl
Multiple Airlines Logo
19:25 - 20:55ORD  Chicago O'Hare Intl-BFS Belfast Intl
19h 30m2 stops Reykjavik Keflavik Intl Manchester
£672Multiple Airlines
Mon, 21 Sep - Mon, 28 Sep

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Customise your flight search to find flights from Belfast Intl Airport to Chicago 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 279,928 searches. Data last updated 11 August 2026.
Use the filters below to find and compare flights from Belfast Intl Airport to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 21/9

06:10-20:41

3 stops44h 31m

Chicago O'Hare Intl

Mon 28/9

19:25-20:55

2 stops19h 30m

£607

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Wed 23/9

06:10-09:00

3 stops32h 50m

Chicago O'Hare Intl

Wed 30/9

22:25-21:10

2 stops16h 45m

£611

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Wed 23/9

13:50-16:10

2 stops32h 20m

Chicago O'Hare Intl

Wed 30/9

19:15-22:20

2 stops21h 05m

£620

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Wed 23/9

07:30-19:15

2 stops17h 45m

Chicago O'Hare Intl

Wed 30/9

15:45-21:05

2 stops23h 20m

£632

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Wed 23/9

06:10-19:48

2 stops19h 38m

Chicago O'Hare Intl

Wed 30/9

09:55-17:55

3 stops26h 00m

£642

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 21/9

06:10-20:12

3 stops20h 02m

Chicago O'Hare Intl

Mon 28/9

19:25-20:55

2 stops19h 30m

£650

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 21/9

20:55-20:41

3 stops29h 46m

Chicago O'Hare Intl

Mon 28/9

14:15-16:15

3 stops20h 00m

£653

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 7/9

20:55-20:41

3 stops29h 46m

Chicago O'Hare Intl

Mon 14/9

19:25-16:15

2 stops14h 50m

£660
Fastest return journey

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 21/9

08:15-20:12

2 stops17h 57m

Chicago O'Hare Intl

Mon 28/9

19:25-15:35

2 stops14h 10m

£667

BelfastChicago

BFS Belfast Intl - ORD Chicago O'Hare Intl

BFSORD

Belfast Intl

Mon 21/9

08:15-22:05

2 stops19h 50m

Chicago O'Hare Intl

Mon 28/9

19:25-20:55

2 stops19h 30m

£672

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

When to book flights from Belfast Intl Airport to Chicago

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

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

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

Fastest flight time

12h 40m

Direct flights

None
The fastest flight from Belfast Intl Airport to Chicago takes 12h 40m
There are no direct flights from Belfast Intl Airport to Chicago. There are no popular flight routes from Belfast Intl Airport to Chicago.
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Frequently asked questions about flying from Belfast Intl Airport to Chicago

  • How far is Belfast Intl to Chicago by plane?

    The straight-line distance from Belfast Intl to Chicago is 3624.6 mi. 12h 40m is a normal flight duration for this route.

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

    Prices for flights from Belfast Intl Airport to Chicago are updated daily.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Belfast Intl Airport to Chicago.

  • What documentation or ID do you need to fly to Chicago?

    The required travel and health documents for your Chicago trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chicago. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Frequently asked questions about flying from Belfast Intl Airport to Chicago

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

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Belfast Intl Airport from Chicago. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

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

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • 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.

Travelling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Schererville

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Belfast to Chicago . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Belfast to Chicago flights to just show those with flexible booking policies.

How can momondo help me find flights from Belfast to Chicago?

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 Chicago from Belfast.

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

Yes momondo offers price alerts on flights to Chicago from Belfast. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 78.5 mi from Chicago
Chicago Midway Airport
Chicago O'Hare Intl Airport
Chicago Greater Rockford Airport