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Belfast Intl

$323+ Cheap flights from Chicago (CHI) to Belfast Intl (BFS)

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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BFS
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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Cheap flight deals from Chicago to Belfast Intl

Best flights from Chicago to Belfast Intl
Discover carefully curated flight deals from Chicago to Belfast Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 28, 2025.

This Mytrip deal was found by Cheapflights users on 12/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/186:30 pmORD - BFS
3 stops21h 25mMultiple Airlines
Sun 1/257:55 amBFS - ORD
3 stops30h 23mMultiple Airlines
Deal found 12/26$748
This Booking.com deal was found by Cheapflights users on 12/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/105:20 pmORD - BFS
2 stops20h 55mMultiple Airlines
Tue 2/175:45 amBFS - ORD
3 stops17h 35mMultiple Airlines
Deal found 12/27$778
This Trip.com deal was found by Cheapflights users on 12/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/84:45 pmORD - BFS
1 stop15h 10mMultiple Airlines
Sun 3/228:55 pmBFS - ORD
1 stop20h 20mMultiple Airlines
Deal found 12/27$856

Find flight deals from Chicago to Belfast Intl

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Belfast Intl (BFS). 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 December 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$748
(Mytrip)

One-way from

$323
(Kiwi.com)
Provider with most accurate pricing for Chicago (CHI)-Belfast Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Belfast Intl flights.
Search Deals
From Chicago (CHI) to Belfast Intl
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One-way flight from Chicago (CHI) to Belfast Intl
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Belfast 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 2,558,603 searches. Data last updated December 28, 2025.
Use the filters below to find and compare flights from Chicago to Belfast Intl Airport that are best for you.

Fly from

Chicago

Fly to

Belfast Intl

Route

Depart

Return

Price

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 1/18

6:30 pm-9:55 pm

3 stops21h 25m

Belfast Intl

Sun 1/25

7:55 am-8:18 am

3 stops30h 23m

$748

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Tue 2/10

5:20 pm-8:15 pm

2 stops20h 55m

Belfast Intl

Tue 2/17

5:45 am-5:20 pm

3 stops17h 35m

$778

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 3/8

4:45 pm-12:55 pm

1 stop15h 10m

Belfast Intl

Sun 3/22

8:55 pm-12:15 pm

1 stop20h 20m

$856

ChicagoBelfast

MDW - BFS

MDWBFS

Chicago Midway

Thu 1/15

6:30 pm-10:05 am

3 stops33h 35m

$323

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Thu 1/15

7:15 am-8:25 pm

3 stops31h 10m

$378

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Compare providers for flights from Chicago to Belfast Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Belfast Intl in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-Belfast Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Chicago-Belfast Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Chicago-Belfast Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Belfast Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Belfast Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Chicago to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Chicago with our price prediction graph.
Estimated round-trip 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.

Cheapflights Insights

Everything you need to know about your flight from Chicago to Belfast Intl Airport

What is the cheapest time of day to fly from CHI to BFS?

Find hourly flight availability from Chicago to Belfast Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 28, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 29% on flights from Chicago to Belfast Intl Airport by exploring options for tickets in the morning.

Reviews of airlines servicing Belfast Intl

Get insights into the airlines that provide service to Belfast Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belfast Intl. Reviews last updated December 28, 2025.
Get a feel of what it's like to fly with British Airways from Chicago to Belfast Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,616 reviews

Crew

7.6

Food

6.4

Comfort

6.7

Entertainment

6.4

Boarding

6.9

Overall

6.7

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.
British Airways
6.7
Okay
7,616 reviews
British Airways
6.7
Okay
7,616 reviews

Crew

7.6

Food

6.4

Comfort

6.7

Entertainment

6.4

Boarding

6.9

Overall

6.7

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.

Related info for your journey

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

  • What is the cheapest airline to fly from Chicago to Belfast Intl Airport round-trip?

    Currently priced at $577, British Airways will fly you from Chicago to Belfast Intl Airport and back. In addition to British Airways, many other airlines offer competitively priced options for your trip.

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

    Yes. In addition to deals on Chicago to Belfast Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Belfast Intl?

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

  • Can I find deals for business class flights from Chicago to Belfast Intl?

    Yes. Cheapflights offers flight deals from Chicago to Belfast 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.

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Alternative routes for Chicago to Belfast Intl

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

Discover the top airline that operate flights from Chicago to Belfast Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$577Average$691FlexibilityNo cancel feeOn-time70%

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