$264+ Cheap flights from Illinois 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BFS
Mar 17 — Mar 241
1 adult, Economy
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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
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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 Illinois to Belfast Intl
Keep the following information in mind while searching for Illinois to Belfast Intl flight deals. Data was last updated March 12, 2025.
Round-trip from | $728 (Mytrip) |
|---|---|
One-way from | $264 (Kiwi.com) |
Popular in | May |
Cheapest in | December |
Average price | $747 |
Find flight deals from Illinois to Belfast Intl
Cheapest flights from Illinois to Belfast IntlExplore the most affordable flight options available from Illinois to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2025.
Explore the most affordable flight options available from Illinois to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2025.
This Mytrip deal was found by Cheapflights users on 3/11. 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.
Tue 4/12:20 pmORD - BFS
2 stops27h 30mMultiple Airlines
Tue 4/84:55 pmBFS - ORD
2 stops29h 00mMultiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$728
This Mytrip deal was found by Cheapflights users on 3/12. 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 4/66:35 amSTL - BFS
3 stops32h 55mMultiple Airlines
Sat 4/126:55 amBFS - STL
3 stops36h 35mMultiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$1,263
Find flights from Illinois to Belfast Intl within your budget
Customize your flight search to find flights from Illinois 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 March 12, 2025.
Fly from
Illinois
Fly to
Belfast Intl
Route
Depart
Return
Price
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
Tue 4/1
2:20 pm-11:50 pm
2 stops27h 30m
Belfast Intl
Tue 4/8
4:55 pm-3:55 pm
2 stops29h 00m
$728
St. LouisBelfast
STL - BFS
STLBFS
Lambert-St Louis
Sun 4/6
6:35 am-9:30 pm
3 stops32h 55m
Belfast Intl
Sat 4/12
6:55 am-1:30 pm
3 stops36h 35m
$1,263
ChicagoBelfast
ORD - BFS
ORDBFS
Chicago O'Hare Intl
Fri 5/2
7:30 pm-6:50 am
2 stops29h 20m
$264
St. LouisBelfast
STL - BFS
STLBFS
Lambert-St Louis
Sat 4/26
6:30 am-10:20 pm
3 stops57h 50m
$410
Best time to book a flight from Illinois to Belfast Intl
Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Illinois 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.
Travel insights for flights from Illinois to Belfast Intl
Get recent, data-driven insights about flights from Illinois to Belfast Intl including ideal travel times, pricing trends, and more.
What is the cheapest time of day to fly from IL to BFS?
Find hourly flight availability from Illinois 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 March 12, 2025.
When flying from Illinois to Belfast Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Rainfall in Belfast Intl by month
Plan your trip to Belfast Intl by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Belfast Intl Airport ranges from 2.0 - 3.5 inches per month. October is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Belfast Intl Airport when rainfall is around 2.0 in.
Temperature in Belfast Intl by month
Plan your trip to Belfast Intl by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Belfast Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).
Related info for your journey
Find useful and relevant information for your journey from Illinois 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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Alternative routes for Illinois to Belfast Intl
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Illinois to Belfast Intl
Discover the top airline that operate flights from Illinois 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 March 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$621 | Average$720 | FlexibilityNo cancel fee | On-time70% |