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

Price Alerts will notify you by email when the price for flights to Illinois from Belfast Intl Airport decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

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

Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

How does momondo find its flight prices?

We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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

Prices for flights from Belfast Intl Airport to Illinois refresh daily.

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

The number of operators available for flights from Belfast Intl Airport to Illinois is 1 as of February 2026.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast Intl Airport 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.

£285 Cheap Flights from Belfast Intl Airport to Illinois in 2026

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Find the cheapest flights from Belfast Intl Airport to Illinois

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

22:20 - 16:00

BFS

ORD

46h 40m

3 stops

18:01 - 20:10

ORD

BFS

21h 09m

3 stops

£537Multiple Airlines

Mon, 16 Mar - Mon, 23 Mar

22:20 - 16:00

BFS

ORD

46h 40m

3 stops

19:50 - 20:15

ORD

BFS

19h 25m

2 stops

£550Multiple Airlines

Mon, 16 Mar - Mon, 23 Mar

08:35 - 19:45

BFS

ORD

16h 10m

1 stop

16:21 - 16:15

ORD

BFS

18h 54m

2 stops

£658Multiple Airlines

Mon, 16 Mar - Mon, 23 Mar

07:30 - 21:00

BFS

ORD

18h 30m

2 stops

21:50 - 23:55

ORD

BFS

20h 05m

1 stop

£735Multiple Airlines

Thu, 26 Mar - Thu, 2 Apr

09:45 - 16:00

BFS

ORD

35h 15m

2 stops

09:06 - 20:35

ORD

BFS

29h 29m

2 stops

£757Multiple Airlines

Thu, 26 Mar - Thu, 2 Apr

09:45 - 16:00

BFS

ORD

35h 15m

2 stops

16:20 - 21:40

ORD

BFS

23h 20m

3 stops

£778Multiple Airlines

Thu, 26 Mar - Thu, 2 Apr

09:40 - 12:35

BFS

ORD

31h 55m

2 stops

15:45 - 22:15

ORD

BFS

24h 30m

2 stops

£797Multiple Airlines

Sat, 28 Mar - Sat, 4 Apr

19:50 - 00:22

BFS

ORD

33h 32m

3 stops

19:25 - 22:40

ORD

BFS

21h 15m

3 stops

£907Multiple Airlines

Sat, 28 Mar - Sat, 4 Apr

06:30 - 00:22

BFS

ORD

46h 52m

3 stops

16:20 - 21:40

ORD

BFS

23h 20m

3 stops

£939Multiple Airlines

Thu, 26 Mar - Thu, 2 Apr

06:30 - 13:25

BFS

ORD

12h 55m

2 stops

17:35 - 20:40

ORD

BFS

21h 05m

2 stops

£1,054Multiple Airlines

Mon, 15 Jun - Mon, 15 Jun

momondo Fare Finder

Use the filters below to find and compare flights from Belfast Intl Airport to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 16/3

22:20-16:00

3 stops46h 40m

Chicago O'Hare Intl

Mon 23/3

18:01-20:10

3 stops21h 09m

£537

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 16/3

22:20-16:00

3 stops46h 40m

Chicago O'Hare Intl

Mon 23/3

19:50-20:15

2 stops19h 25m

£550

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 16/3

08:35-19:45

1 stop16h 10m

Chicago O'Hare Intl

Mon 23/3

16:21-16:15

2 stops18h 54m

£658

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 26/3

07:30-21:00

2 stops18h 30m

Chicago O'Hare Intl

Thu 2/4

21:50-23:55

1 stop20h 05m

£735

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 26/3

09:45-16:00

2 stops35h 15m

Chicago O'Hare Intl

Thu 2/4

09:06-20:35

2 stops29h 29m

£757

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 26/3

09:45-16:00

2 stops35h 15m

Chicago O'Hare Intl

Thu 2/4

16:20-21:40

3 stops23h 20m

£778

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 28/3

09:40-12:35

2 stops31h 55m

Chicago O'Hare Intl

Sat 4/4

15:45-22:15

2 stops24h 30m

£797

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 28/3

19:50-00:22

3 stops33h 32m

Chicago O'Hare Intl

Sat 4/4

19:25-22:40

3 stops21h 15m

£907

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 26/3

06:30-00:22

3 stops46h 52m

Chicago O'Hare Intl

Thu 2/4

16:20-21:40

3 stops23h 20m

£939

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Mon 15/6

06:30-13:25

2 stops12h 55m

Chicago O'Hare Intl

Mon 15/6

17:35-20:40

2 stops21h 05m

£1,054

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 resultsSorted by cheapest first

Cheap Belfast Intl Airport to Illinois flight deals and tips

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

Fastest flight time	13h 15m
Direct flights	None

The fastest flight from Belfast Intl Airport to Illinois takes 13h 15m

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

Search flight deals

When did momondo last update prices for flights from Belfast Intl Airport to Illinois?
Prices for flights from Belfast Intl Airport to Illinois refresh daily.
How many operators does momondo search for flights from Belfast Intl Airport to Illinois?
The number of operators available for flights from Belfast Intl Airport to Illinois is 1 as of February 2026.
How old do you have to be to fly from Belfast Intl Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast Intl Airport 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 Intl Airport to Illinois

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

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom £491	Free Cancellation	Rating 6.7 7,731 reviews		Search British Airways flights

How do I get Price Alerts for flights from Belfast Intl Airport to Illinois?
Price Alerts will notify you by email when the price for flights to Illinois from Belfast Intl Airport decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.
How can I save money on flights from Belfast Intl Airport to Illinois with momondo?
Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.
How does momondo find its flight prices?
We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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?

momondo does allow users to show only those flights to Illinois from Belfast which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Belfast and Illinois by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Illinois from Belfast. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.