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Cheap flights from Belfast Intl Airport to Chicago O'Hare Intl Airport from £319

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/9. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — ORD
11 May — 18 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast Intl to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest flights from Belfast Intl to O'Hare Intl
Explore the most affordable flight options available from Belfast Intl to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 April 2026.

Sat 23/522:25
BFS
-
ORD
3 stops46h 05m
Multiple Airlines
Sat 30/509:55
ORD
-
BFS
2 stops17h 00m
Multiple Airlines
Deal found 8/4£704
Mon 25/506:10
BFS
-
ORD
3 stops35h 09m
Multiple Airlines
Mon 1/622:25
ORD
-
BFS
3 stops18h 55m
Multiple Airlines
Deal found 10/4£768
Fri 22/518:35
BFS
-
ORD
2 stops29h 40m
Multiple Airlines
Fri 29/514:15
ORD
-
BFS
2 stops25h 35m
Multiple Airlines
Deal found 7/4£776

Find flight deals from Belfast Intl to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Belfast Intl (BFS) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 April 2026.

Round-trip from

£704

One-way from

£319
23/5-30/5
  • 23/5-30/5
  • 5 total stops
  • 63h 05m total
  • Belfast to Chicago
Search Deals
17/9
  • 17/9
  • 3 total stops
  • 26h 25m total
  • Belfast to Chicago
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast Intl to O'Hare Intl 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, Cheapflights users made 858,174 searches. Data last updated 11 April 2026.
Use the filters below to find and compare flights from Belfast Intl Airport to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 23/5

22:25-14:30

3 stops46h 05m

Chicago O'Hare Intl

Sat 30/5

09:55-08:55

2 stops17h 00m

£704
Fastest return journey

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 25/5

06:10-11:19

3 stops35h 09m

Chicago O'Hare Intl

Mon 1/6

10:00-12:30

2 stops20h 30m

£776

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 22/5

18:35-18:15

2 stops29h 40m

Chicago O'Hare Intl

Fri 29/5

08:45-21:50

3 stops31h 05m

£810
Cheapest one-way

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Fri 21/8

11:25-11:50

2 stops54h 25m

£396

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 24/8

21:55-14:25

2 stops46h 30m

£399
Fastest single journey

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 28/7

17:10-18:15

3 stops31h 05m

£419

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 17/9

08:15-15:10

1 stop36h 55m

£622

Flights are sorted by cheapest return flights first.

Deals found on 9/4

Sorted by cheapest first

Best time to book a flight from Belfast Intl to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Belfast Intl with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Belfast Intl to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Belfast Intl to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Belfast Intl to O'Hare Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Belfast Intl to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast Intl to O'Hare Intl.

  • Can I find deals for business class flights from Belfast Intl to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Belfast Intl to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Travelling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Elk Grove Village

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Belfast Intl to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
Belfast City to O'Hare Intl flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Belfast Intl to O'Hare Intl?

When you search for this flight from Belfast Intl to O'Hare Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Belfast Intl to O'Hare Intl?

Cheapflights helps you find that perfect flight to O'Hare Intl from Belfast Intl by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Belfast Intl to O'Hare Intl with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Belfast Intl to O'Hare Intl, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Belfast Intl to O'Hare Intl become cheaper?

Yes! Start tracking prices for Belfast Intl to O'Hare Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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