How do I get Price Alerts for flights from Belfast to Illinois?

Confirm your travel details to search for the latest offers for flights from Belfast to Illinois . While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

How can I save money on flights from Belfast to Illinois with momondo?

By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

How does momondo find its flight prices?

We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

When did momondo last update prices for flights from Belfast to Illinois?

Prices for flights from Belfast to Illinois were last updated today.

How many operators does momondo search for flights from Belfast to Illinois?

There is 1 operator available for flights from Belfast to Illinois as of April 2026.

How old do you have to be to fly from Belfast to Illinois?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Belfast to Illinois.

What documentation or ID do you need to fly to Illinois?

The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£317 Cheap Flights from Belfast to Illinois in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

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Find the cheapest flights from Belfast to Illinois

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

08:20 - 11:19

BFS

ORD

32h 59m

3 stops

09:55 - 16:20

ORD

BFS

24h 25m

2 stops

£613Multiple Airlines

Tue, 26 May - Tue, 2 Jun

08:20 - 11:19

BFS

ORD

32h 59m

3 stops

22:25 - 23:20

ORD

BFS

18h 55m

3 stops

£675Multiple Airlines

Tue, 26 May - Tue, 2 Jun

21:15 - 14:55

BFS

ORD

23h 40m

2 stops

09:55 - 19:40

ORD

BFS

27h 45m

2 stops

£689Multiple Airlines

Tue, 26 May - Tue, 2 Jun

19:30 - 15:00

BHD

ORD

25h 30m

1 stop

18:35 - 19:25

ORD

BHD

18h 50m

2 stops

£709British Airways

Thu, 10 Sep - Mon, 14 Sep

19:30 - 12:30

BHD

ORD

23h 00m

1 stop

21:00 - 15:30

ORD

BHD

12h 30m

1 stop

£710British Airways

Thu, 10 Sep - Mon, 14 Sep

20:35 - 19:26

BHD

ORD

28h 51m

2 stops

16:45 - 15:30

ORD

BHD

16h 45m

2 stops

£714British Airways

Thu, 10 Sep - Mon, 14 Sep

20:35 - 19:26

BHD

ORD

28h 51m

2 stops

12:40 - 15:30

ORD

BHD

20h 50m

2 stops

£714British Airways

Thu, 10 Sep - Mon, 14 Sep

20:35 - 12:30

BHD

ORD

21h 55m

1 stop

16:45 - 15:30

ORD

BHD

16h 45m

2 stops

£715British Airways

Thu, 10 Sep - Mon, 14 Sep

20:35 - 19:26

BHD

ORD

28h 51m

2 stops

16:45 - 15:30

ORD

BHD

16h 45m

2 stops

£719British Airways

Thu, 10 Sep - Mon, 14 Sep

16:30 - 23:56

BFS

ORD

37h 26m

3 stops

08:45 - 21:00

ORD

BFS

30h 15m

3 stops

£730Multiple Airlines

Sun, 10 May - Sun, 17 May

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British Airways flights from Belfast to Illinois

Our best British Airways deals on Belfast to Illinois flight tickets

British Airways

10 Sept

BHD19:30Belfast City

25h 30m

1 stop

ORD15:00Chicago O'Hare Intl

14 Sept

ORD18:35Chicago O'Hare Intl

18h 50m

2 stops

BHD19:25Belfast City

£709

British Airways

10 Sept

BHD19:30Belfast City

23h 00m

1 stop

ORD12:30Chicago O'Hare Intl

14 Sept

ORD21:00Chicago O'Hare Intl

12h 30m

1 stop

BHD15:30Belfast City

£710

British Airways

10 Sept

BHD20:35Belfast City

28h 51m

2 stops

ORD19:26Chicago O'Hare Intl

14 Sept

ORD16:45Chicago O'Hare Intl

16h 45m

2 stops

BHD15:30Belfast City

£714

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 26/5

08:20-11:19

3 stops32h 59m

Chicago O'Hare Intl

Tue 2/6

09:55-16:20

2 stops24h 25m

£613

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 26/5

08:20-11:19

3 stops32h 59m

Chicago O'Hare Intl

Tue 2/6

22:25-23:20

3 stops18h 55m

£675

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Tue 26/5

21:15-14:55

2 stops23h 40m

Chicago O'Hare Intl

Tue 2/6

09:55-19:40

2 stops27h 45m

£689

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 10/9

19:30-15:00

1 stop25h 30m

Chicago O'Hare Intl

Mon 14/9

18:35-19:25

2 stops18h 50m

£709

Fastest return journey

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 10/9

19:30-12:30

1 stop23h 00m

Chicago O'Hare Intl

Mon 14/9

21:00-15:30

1 stop12h 30m

£710

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 10/9

20:35-19:26

2 stops28h 51m

Chicago O'Hare Intl

Mon 14/9

16:45-15:30

2 stops16h 45m

£714

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 10/9

20:35-19:26

2 stops28h 51m

Chicago O'Hare Intl

Mon 14/9

12:40-15:30

2 stops20h 50m

£714

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 10/9

20:35-12:30

1 stop21h 55m

Chicago O'Hare Intl

Mon 14/9

16:45-15:30

2 stops16h 45m

£715

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Thu 10/9

20:35-19:26

2 stops28h 51m

Chicago O'Hare Intl

Mon 14/9

16:45-15:30

2 stops16h 45m

£719

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sun 10/5

16:30-23:56

3 stops37h 26m

Chicago O'Hare Intl

Sun 17/5

08:45-21:00

3 stops30h 15m

£730

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 resultsSorted by cheapest first

Cheap Belfast to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Belfast to Illinois

Fastest flight time	12h 00m
Direct flights	None

The fastest flight from Belfast to Illinois takes 12h 00m

There are no direct flights from Belfast to Illinois. There are no popular flight routes from Belfast to Illinois.

Search flight deals

Frequently asked questions about flying from Belfast to Illinois

When did momondo last update prices for flights from Belfast to Illinois?
Prices for flights from Belfast to Illinois were last updated today.
How many operators does momondo search for flights from Belfast to Illinois?
There is 1 operator available for flights from Belfast to Illinois as of April 2026.
How old do you have to be to fly from Belfast to Illinois?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Belfast to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Belfast to Illinois

Compare and see reviews for airlines that fly from Belfast to Illinois with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom £495	Free Cancellation	Rating 6.7 7,885 reviews		Search British Airways flights

Frequently asked questions about flying from Belfast to Illinois

How do I get Price Alerts for flights from Belfast to Illinois?
Confirm your travel details to search for the latest offers for flights from Belfast to Illinois. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.
How can I save money on flights from Belfast to Illinois with momondo?
By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.
How does momondo find its flight prices?
We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Why use momondo?

Why should I use momondo to find a flight deal from Belfast to Illinois?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Illinois from Belfast.

Can I find flights from Belfast to Illinois with flexible booking policies on momondo?

Flights from Belfast to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Belfast to Illinois?

momondo provides multiple filters to help you find the best flight to Illinois from Belfast. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Belfast to Illinois right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Illinois, momondo offers a useful price alert feature which will track prices for flights to Illinois from Belfast and alert you when they change.