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Find cheap flights from Belfast Intl Airport to Illinois from $417

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast Intl to Illinois departing on 8/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
sáb 6/29
sáb 7/6

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In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Good to know

Low season

September

High season

August

Cheapest flight

$417
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly with an average 33% increase in price.
Flight from Belfast Intl Airport to Chicago

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Belfast Intl Airport to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Belfast Intl Airport to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Belfast Intl Airport to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Illinois from Belfast Intl Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Belfast Intl Airport to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Illinois with an airline and back to Belfast Intl Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Belfast Intl Airport to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Illinois from Belfast Intl Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Illinois

  • Morning departure is around 262% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Book cheap flights from Belfast to Illinois

Recent one-way flight deals

8/24sáb
2 stops
20h 07mBFS-ORD
$417
8/24sáb
3 stops
24h 12mBFS-ORD
$466
7/28dom
3 stops
40h 29mBFS-ORD
$577
7/28dom
2 stops
29h 15mBFS-ORD
$611
7/28dom
1 stop
18h 35mBFS-ORD
$1,368
8/24sáb
1 stop
13h 20mBFS-ORD
$1,992

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Last minute flights from Belfast Intl to Illinois

Last minute flight, train and bus deals

6/2dom
multi-stop
15h 10mBFS-ORD
6/9dom
multi-stop
16h 40mORD-BFS
$1,212
6/2dom
multi-stop
40h 30mBFS-ORD
6/9dom
multi-stop
16h 20mORD-BFS
$1,362

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Belfast Intl Airport - Illinois Flights

Departure:

Belfast Intl Airport (BFS)United Kingdom

Return flight deals:

Illinois - Belfast Intl Airport

Cabin classes:

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