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

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 Illinois to Belfast. Visit our flight page for the latest deals!>/a>

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast from Illinois is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

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

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 Belfast with an airline and back to Illinois with another airline. Visit our flight page for the latest deals!>/a>

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

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 Belfast from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$322 CHEAP FLIGHTS from Illinois to Belfast

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Flight Deals

Cheap Flights from Illinois to Belfast

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Belfast that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Illinois to Belfast

Mon, Sep 29 - Tue, Oct 7

1:26 pm - 11:10 pmSTL-BFS

27h 44m2 stops

6:45 am - 10:04 pmBFS-STL

21h 19m2 stops

$583Multiple Airlines

Find Deal

Fri, Dec 5 - Tue, Dec 9

9:45 pm - 5:15 pmORD-BHD

13h 30m1 stop

10:00 am - 6:45 pmBHD-ORD

14h 45m1 stop

$632British Airways

Find Deal

Mon, Sep 29 - Tue, Oct 7

7:59 pm - 5:30 pmSTL-BHD

15h 31m2 stops

9:35 am - 9:29 pmBHD-STL

17h 54m2 stops

$706American Airlines

Find Deal

Fri, Oct 3 - Tue, Oct 7

4:15 pm - 9:15 pmORD-BHD

23h 00m1 stop

6:30 am - 2:10 pmBHD-ORD

13h 40m1 stop

$722Delta

Find Deal

Fri, Dec 5 - Tue, Dec 9

5:03 pm - 4:50 pmORD-BHD

17h 47m2 stops

5:20 pm - 2:20 pmBHD-ORD

27h 00m1 stop

$726Delta

Find Deal

Fri, Oct 31 - Mon, Nov 10

5:11 pm - 2:15 pmORD-BHD

16h 04m2 stops

6:35 am - 5:52 pmBHD-ORD

17h 17m2 stops

$744American Airlines

Find Deal

Fri, Oct 3 - Tue, Oct 7

4:15 pm - 4:55 pmORD-BHD

18h 40m1 stop

6:30 am - 2:10 pmBHD-ORD

13h 40m1 stop

$774KLM

Find Deal

Fri, Oct 3 - Tue, Oct 7

4:15 pm - 4:55 pmORD-BHD

18h 40m1 stop

6:30 am - 5:22 pmBHD-ORD

16h 52m2 stops

$784KLM

Find Deal

Fri, Oct 17 - Tue, Oct 21

1:08 pm - 9:15 pmMDW-BHD

26h 07m2 stops

6:30 am - 6:25 pmBHD-MDW

17h 55m2 stops

$792Virgin Atlantic

Find Deal

Sun, Mar 1 - Thu, Mar 5

4:00 pm - 9:00 pmSTL-BHD

23h 00m2 stops

6:30 am - 8:39 pmBHD-STL

20h 09m2 stops

$801Virgin Atlantic

Find Deal

Cheapest round-trip

$583

Multiple Airlines

Mon 9/29Tue 10/7

STL - BFS • 2 stops

Cheapest one-way

$322

Multiple Airlines

Sun 9/28

MDW - BFS • 3 stops

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KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Belfast!

Useful Info

How does KAYAK find such low prices on flights from Illinois to Belfast?
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 Illinois to Belfast.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Belfast?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast from Illinois 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 Illinois to Belfast?
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 Belfast with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Belfast?
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 Belfast from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Belfast

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Cabin class types available on flights to Illinois

First Class flights to Belfast

Business Class flights to Belfast

Prem Econ Class flights to Belfast

Economy Class flights to Belfast

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

$322 Find Cheap Flights from Illinois to Belfast

KAYAK searches hundreds of travel sites at once for deals on flights to Belfast

Cheap Flights from Illinois to Belfast

Recent round-trip flight deals from Illinois to Belfast

Recent one-way flight deals from Illinois to Belfast

Recent last minute flight deals from Illinois to Belfast

Everything you should know

FAQs for booking flights from Illinois to Belfast

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

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 Illinois to Belfast.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast from Illinois 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 Illinois to Belfast?

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 Belfast with an airline and back to Illinois with another airline.

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

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 Belfast from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Belfast

Cabin class types available on flights to Illinois

Complete your trip to Belfast with a hotel stay or car rental

Find direct flights for Belfast

Flights to other popular destinations

Flights from domestic origins to Belfast

Choose which airport to fly into in Belfast

Find deals for your return flight