$357+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BFS
Apr 10 — Apr 171
Round-trip
1 adult, Economy
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Find cheap flights from Chicago to Belfast Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Chicago to Belfast Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Chicago to Belfast IntlExplore the most affordable flight options available from Chicago to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on März 11, 2026.
Explore the most affordable flight options available from Chicago to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on März 11, 2026.
This Trip.com deal was found by Cheapflights users on 3/7. 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.
Do 4/2311:25 am
ORD
- BFS
2 stops30h 00m
Multiple Airlines
Mi 4/298:55 am
BFS
- ORD
2 stops30h 45m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$717
This Mytrip deal was found by Cheapflights users on 3/6. 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.
Fr 5/84:05 pm
ORD
- BFS
2 stops23h 10m
Multiple Airlines
Mi 5/138:30 am
BFS
- ORD
3 stops39h 20m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$766
This Mytrip deal was found by Cheapflights users on 3/9. 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.
Do 4/2311:25 am
ORD
- BFS
2 stops29h 35m
Multiple Airlines
Do 4/306:35 am
BFS
- ORD
2 stops33h 05m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$786
This Mytrip deal was found by Cheapflights users on 3/7. 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.
So 9/139:00 pm
ORD
- BFS
2 stops18h 30m
Multiple Airlines
Sa 9/1911:10 am
BFS
- ORD
3 stops36h 40m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$818
This Mytrip deal was found by Cheapflights users on 3/7. 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.
Sa 4/47:25 pm
ORD
- BFS
2 stops19h 15m
Multiple Airlines
Sa 4/114:55 pm
BFS
- ORD
3 stops46h 45m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$874
Best flights from Chicago to Belfast IntlDiscover 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 März 11, 2026.
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 März 11, 2026.
This Mytrip deal was found by Cheapflights users on 3/6. 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.
Fr 5/89:55 am
ORD
- BFS
3 stops29h 05m
Multiple Airlines
Mi 5/138:30 am
BFS
- ORD
3 stops39h 20m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$779
This Mytrip deal was found by Cheapflights users on 3/9. 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.
Do 4/2311:25 am
ORD
- BFS
2 stops29h 35m
Multiple Airlines
Do 4/306:35 am
BFS
- ORD
2 stops33h 05m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$786
This Trip.com deal was found by Cheapflights users on 3/7. 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.
Do 4/2310:30 pm
ORD
- BFS
1 stop18h 55m
Multiple Airlines
Mi 4/295:55 am
BFS
- ORD
1 stop16h 00m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$903
This Mytrip deal was found by Cheapflights users on 3/7. 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.
Sa 4/49:50 am
ORD
- BFS
3 stops28h 50m
Multiple Airlines
Sa 4/114:55 pm
BFS
- ORD
3 stops46h 45m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$915
This Mytrip deal was found by Cheapflights users on 3/8. 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.
Fr 7/313:35 pm
ORD
- BFS
2 stops23h 40m
Multiple Airlines
Sa 8/83:35 pm
BFS
- ORD
2 stops26h 15m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$1,052
This Kiwi.com deal was found by Cheapflights users on 3/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 4/299:40 pm
ORD
- BFS
2 stops18h 40m
Multiple Airlines
Mo 5/45:50 am
BFS
- ORD
1 stop20h 00m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$1,078
This Mytrip deal was found by Cheapflights users on 3/7. 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.
Fr 7/178:45 am
ORD
- BFS
3 stops30h 30m
Multiple Airlines
Mo 7/274:10 pm
BFS
- ORD
3 stops33h 05m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$1,332
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
So 6/73:45 pm
ORD
- BFS
2 stops23h 45m
Multiple Airlines
Mo 7/65:50 am
BFS
- ORD
1 stop15h 20m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$1,446
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
So 6/73:45 pm
ORD
- BFS
2 stops11h 55m
Multiple Airlines
Di 7/79:55 am
BFS
- ORD
1 stop35h 15m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$1,631
Last-minute flights from Chicago to Belfast IntlDiscover last-minute flight deals from Chicago to Belfast Intl. Data last updated März 11, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Belfast Intl. Data last updated März 11, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 3/7. 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.
Mi 3/1112:50 pm
ORD
- BFS
2 stops21h 40m
Multiple Airlines
Fr 3/137:05 am
BFS
- ORD
2 stops33h 00m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$1,262
This Mytrip deal was found by Cheapflights users on 3/7. 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.
Sa 4/47:25 pm
ORD
- BFS
2 stops19h 15m
Multiple Airlines
Sa 4/114:55 pm
BFS
- ORD
3 stops46h 45m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$874
This Trip.com deal was found by Cheapflights users on 3/7. 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.
Do 4/2311:25 am
ORD
- BFS
2 stops30h 00m
Multiple Airlines
Mi 4/298:55 am
BFS
- ORD
2 stops30h 45m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$717
This Mytrip deal was found by Cheapflights users on 3/9. 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.
Do 4/2311:25 am
ORD
- BFS
2 stops29h 35m
Multiple Airlines
Do 4/306:35 am
BFS
- ORD
2 stops33h 05m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$786
This Kiwi.com deal was found by Cheapflights users on 3/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 4/299:40 pm
ORD
- BFS
2 stops18h 40m
Multiple Airlines
Mo 5/45:50 am
BFS
- ORD
1 stop20h 00m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$1,078
One-way flights from Chicago to Belfast IntlSearch for one-way flight options from Chicago to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated März 11, 2026.
Search for one-way flight options from Chicago to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated März 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 4/157:25 pm
ORD
- BFS
3 stops45h 25m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 6/67:20 am
ORD
- BFS
3 stops43h 30m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$365
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 4/157:30 am
MDW
- BFS
3 stops22h 50m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$375
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
So 6/73:45 pm
ORD
- BFS
2 stops23h 45m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$389
This Kiwi.com deal was found by Cheapflights users on 3/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 7/89:40 pm
ORD
- BFS
2 stops39h 50m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$393
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 6/56:40 am
ORD
- BFS
3 stops43h 25m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$418
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 5/229:10 am
ORD
- BFS
3 stops30h 40m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$477
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 März 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $717 (Trip.com) |
One-way from | $357 (Kiwi.com) |
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 März 11, 2026.
Use the filters below to find and compare flights from Chicago to Belfast Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
Fr 5/8
9:55 am-9:00 pm
3 stops29h 05m
Belfast Intl
Mi 5/13
8:30 am-5:50 pm
3 stops39h 20m
$779
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
Do 4/23
11:25 am-11:00 pm
2 stops29h 35m
Belfast Intl
Do 4/30
6:35 am-9:40 am
2 stops33h 05m
$786
Quickest round-trip
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
Do 4/23
10:30 pm-11:25 pm
1 stop18h 55m
Belfast Intl
Mi 4/29
5:55 am-3:55 pm
1 stop16h 00m
$903
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
Sa 4/4
9:50 am-8:40 pm
3 stops28h 50m
Belfast Intl
Sa 4/11
4:55 pm-9:40 am
3 stops46h 45m
$915
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
Fr 7/31
3:35 pm-9:15 pm
2 stops23h 40m
Belfast Intl
Sa 8/8
3:35 pm-11:50 am
2 stops26h 15m
$1,052
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
Mi 4/29
9:40 pm-10:20 pm
2 stops18h 40m
Belfast Intl
Mo 5/4
5:50 am-7:50 pm
1 stop20h 00m
$1,078
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
Fr 7/17
8:45 am-9:15 pm
3 stops30h 30m
Belfast Intl
Mo 7/27
4:10 pm-7:15 pm
3 stops33h 05m
$1,332
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
So 6/7
3:45 pm-9:30 pm
2 stops23h 45m
Belfast Intl
Mo 7/6
5:50 am-3:10 pm
1 stop15h 20m
$1,446
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
So 6/7
3:45 pm-9:40 am
2 stops11h 55m
Belfast Intl
Di 7/7
9:55 am-3:10 pm
1 stop35h 15m
$1,631
Cheapest one-way
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
Mi 4/15
7:25 pm-10:50 pm
3 stops45h 25m
$357
Showing 1-10 of 15 resultsSorted by cheapest first
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 March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Chicago-Belfast Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Belfast Intl Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.
CHI-BFS
ORD-BFS
MDW-BFS
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
CHI-BFS
ORD-BFS
MDW-BFS
No data available for this route at this time. Please check back soon.
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 März 11, 2026.
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.
Entertainment
6.4
Overall
6.7
Comfort
6.8
Food
6.4
Crew
7.6
Boarding
6.9
Reviews
1 / 20
2.0
MediocreNatasha,Feb 2026
SEA - LHR
Entertainment
6.4
Overall
6.7
Comfort
6.8
Food
6.4
Crew
7.6
Boarding
6.9
Reviews
1 / 20
2.0
MediocreNatasha,Feb 2026
SEA - LHR
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.
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Other flights to Belfast Intl
Explore flights to Belfast Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on März 11, 2026.
Complete your trip
Complete your trip to Belfast Intl by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Chicago to Belfast Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Chicago and Belfast Intl flights
Browse other Chicago and Belfast Intl flight options. Last updated on März 11, 2026.
Other flights from Chicago
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Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 März 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$577 | Average$791 | FlexibilityNo cancel fee | On-time70% |