HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from Illinois to Belfast from $306

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 9/12. 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.
ORD — BHD
May 12 — May 191
From?
To?
Sun 5/12
Sun 5/19
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

What is the cheapest month to fly from Illinois to Belfast?

Flights from Illinois to Belfast lean towards being more expensive in June. Prices are generally better when you fly from Illinois to Belfast in February, with the cheapest ticket starting at $611.

When is the cheapest time to fly from Illinois to Belfast (IL - BFS)?

When flying from Illinois to Belfast, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap British Airways flights from Illinois to Belfast

Explore cheap flight options specifically provided by British Airways for the route between Illinois and Belfast. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,689,106 searches. Data last updated May 7, 2024.
Find some of the cheapest British Airways flights traveling from Illinois to Belfast. Come back soon if you're not finding the exact deal you're looking for.
Wed 5/2211:00 pmORD - BHD
1 stop10h 35mBritish Airways
Wed 6/56:50 amBHD - ORD
1 stop11h 55mBritish Airways
Deal found 5/6$758
Thu 8/1510:40 pmORD - BHD
1 stop10h 55mBritish Airways
Mon 8/196:30 pmBHD - ORD
1 stop22h 15mBritish Airways
Deal found 5/6$766
Sun 9/16:18 pmSTL - BHD
2 stops14h 17mBritish Airways
Mon 9/97:30 pmBHD - STL
2 stops30h 41mBritish Airways
Deal found 5/6$773
Thu 5/239:20 pmORD - BHD
1 stop12h 15mBritish Airways
Wed 6/56:50 amBHD - ORD
1 stop11h 55mBritish Airways
Deal found 5/6$776
Thu 8/158:35 amORD - BHD
1 stop18h 25mBritish Airways
Mon 8/197:30 pmBHD - ORD
2 stops26h 34mBritish Airways
Deal found 5/6$782
Fri 5/2411:00 pmORD - BHD
1 stop15h 45mBritish Airways
Wed 6/56:50 amBHD - ORD
1 stop11h 55mBritish Airways
Deal found 5/6$785
Thu 8/159:20 pmORD - BHD
1 stop12h 15mBritish Airways
Sun 8/187:40 pmBHD - ORD
1 stop21h 05mBritish Airways
Deal found 5/6$791
Mon 9/24:22 pmSTL - BHD
2 stops14h 28mBritish Airways
Sun 9/811:20 amBHD - STL
2 stops14h 38mBritish Airways
Deal found 5/6$795
Wed 5/2211:00 pmORD - BHD
1 stop10h 35mBritish Airways
Sun 6/911:20 amBHD - ORD
1 stop11h 47mBritish Airways
Deal found 5/6$808

Cheap KLM flights from Illinois to Belfast

Explore cheap flight options specifically provided by KLM for the route between Illinois and Belfast. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,689,106 searches. Data last updated May 7, 2024.
Some of the best deals we've found on KLM flights traveling from Illinois to Belfast. Make sure to examine the flight information before completing your reservation.
Mon 9/26:00 pmSTL - BHD
2 stops16h 50mKLM
Mon 9/95:20 pmBHD - STL
2 stops36h 15mKLM
Deal found 5/6$774
Sat 5/254:25 pmORD - BHD
1 stop18h 25mKLM
Thu 6/65:20 pmBHD - ORD
2 stops27h 39mKLM
Deal found 5/6$817
Sat 5/255:44 pmORD - BHD
2 stops17h 06mKLM
Thu 6/65:20 pmBHD - ORD
2 stops27h 08mKLM
Deal found 5/6$821
Sat 5/254:25 pmORD - BHD
1 stop18h 25mKLM
Fri 6/75:20 pmBHD - ORD
2 stops27h 10mKLM
Deal found 5/6$867
Sat 5/255:44 pmORD - BHD
2 stops17h 06mKLM
Fri 6/75:20 pmBHD - ORD
2 stops25h 15mKLM
Deal found 5/6$871
Tue 9/35:30 pmORD - BHD
2 stops17h 20mKLM
Fri 9/65:20 pmBHD - ORD
2 stops29h 25mKLM
Deal found 5/5$896
Thu 5/234:25 pmORD - BHD
1 stop18h 25mKLM
Fri 6/75:20 pmBHD - ORD
2 stops25h 15mKLM
Deal found 5/6$967
Fri 5/247:12 pmORD - BHD
2 stops15h 38mKLM
Thu 6/65:20 pmBHD - ORD
2 stops27h 08mKLM
Deal found 5/6$1,099
Tue 9/36:15 pmMDW - BHD
2 stops16h 35mKLM
Fri 9/65:20 pmBHD - MDW
2 stops29h 54mKLM
Deal found 5/5$1,196

Cheap Illinois to Belfast flights in May & June 2024

Find cheap flight options from Illinois to Belfast specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,689,106 searches. Prices were last updated on May 7, 2024.
The lowest fares we've come across on flights traveling from Illinois to Belfast in May and June 2024. Check back in a little while for more flight options.
Wed 5/2211:00 pmORD - BHD
1 stop10h 35mBritish Airways
Wed 6/56:50 amBHD - ORD
1 stop11h 55mBritish Airways
Deal found 5/6$758
Thu 5/239:20 pmORD - BHD
1 stop12h 15mBritish Airways
Wed 6/56:50 amBHD - ORD
1 stop11h 55mBritish Airways
Deal found 5/6$776
Fri 5/2411:00 pmORD - BHD
1 stop15h 45mBritish Airways
Thu 6/66:35 amBHD - ORD
1 stop12h 10mBritish Airways
Deal found 5/6$785
Fri 5/2411:00 pmORD - BHD
1 stop15h 45mAmerican Airlines
Fri 6/711:50 amBHD - ORD
2 stops18h 08mAmerican Airlines
Deal found 5/6$793
Sun 5/265:44 pmORD - BHD
2 stops17h 06mDelta
Wed 6/55:20 pmBHD - ORD
1 stop26h 55mDelta
Deal found 5/6$794
Sun 5/265:47 pmMDW - BHD
2 stops17h 03mDelta
Wed 6/55:20 pmBHD - MDW
2 stops25h 20mDelta
Deal found 5/6$804
Wed 5/2211:00 pmORD - BHD
1 stop10h 35mBritish Airways
Sat 6/86:50 amBHD - ORD
1 stop11h 55mBritish Airways
Deal found 5/6$808
Wed 5/223:50 pmORD - BHD
2 stops19h 00mDelta
Wed 6/55:20 pmBHD - ORD
1 stop26h 55mDelta
Deal found 5/6$811
Sat 5/254:25 pmORD - BHD
1 stop18h 25mKLM
Thu 6/65:20 pmBHD - ORD
2 stops27h 39mKLM
Deal found 5/6$817

Illinois to Belfast 2024 flight deals

Discover exclusive flight deals for travel between Illinois and Belfast in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,689,106 searches. Data last updated May 7, 2024.
The lowest fares we've come across on flights traveling from Illinois to Belfast in May and June 2024. Check back in a little while for more flight options.
Wed 5/2211:00 pmORD - BHD
1 stop10h 35mBritish Airways
Wed 6/56:50 amBHD - ORD
1 stop11h 55mBritish Airways
Deal found 5/6$758
Thu 8/1510:40 pmORD - BHD
1 stop10h 55mBritish Airways
Mon 8/196:30 pmBHD - ORD
1 stop22h 15mBritish Airways
Deal found 5/6$766
Sun 9/16:18 pmSTL - BHD
2 stops14h 17mBritish Airways
Mon 9/97:30 pmBHD - STL
2 stops30h 41mBritish Airways
Deal found 5/6$773
Mon 9/26:00 pmSTL - BHD
2 stops16h 50mKLM
Mon 9/95:20 pmBHD - STL
2 stops36h 15mKLM
Deal found 5/6$774
Thu 5/239:20 pmORD - BHD
1 stop12h 15mBritish Airways
Thu 6/66:35 amBHD - ORD
1 stop12h 10mBritish Airways
Deal found 5/6$776
Thu 8/158:35 amORD - BHD
1 stop18h 25mBritish Airways
Mon 8/197:30 pmBHD - ORD
2 stops26h 34mBritish Airways
Deal found 5/6$782
Fri 5/2411:00 pmORD - BHD
1 stop15h 45mBritish Airways
Wed 6/56:50 amBHD - ORD
1 stop11h 55mBritish Airways
Deal found 5/6$785
Thu 8/159:20 pmORD - BHD
1 stop12h 15mBritish Airways
Sun 8/187:40 pmBHD - ORD
1 stop21h 05mBritish Airways
Deal found 5/6$791
Fri 5/2411:00 pmORD - BHD
1 stop15h 45mAmerican Airlines
Fri 6/711:50 amBHD - ORD
2 stops18h 08mAmerican Airlines
Deal found 5/6$793

One-way flights to Belfast from Illinois

Search for one-way flight options from Illinois to Belfast. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,689,106 searches. Data last updated May 7, 2024.
If you're seeking multiple options on one-way flights from Illinois to Belfast, be sure to check out these deals, which are updated often. Those seeking round-trip flights from Illinois to Belfast should utilize the search form at the the top of the page.
Thu 9/1210:00 amORD - BFS
2 stops23h 50mMultiple Airlines
Deal found 5/6$306
Wed 6/125:39 amORD - BFS
2 stops28h 06mMultiple Airlines
Deal found 5/6$351
Wed 6/127:40 amORD - BFS
3 stops26h 05mMultiple Airlines
Deal found 5/6$405
Thu 9/1210:57 pmORD - BHD
2 stops39h 03mMultiple Airlines
Deal found 5/6$482
Wed 6/128:58 pmMDW - BHD
3 stops56h 47mMultiple Airlines
Deal found 5/6$506
Wed 6/1210:25 pmORD - BHD
1 stop13h 15mMultiple Airlines
Deal found 5/6$541
Wed 6/124:55 pmORD - BHD
2 stops14h 30mAmerican Airlines
Deal found 5/6$559
Wed 6/121:24 pmMDW - BHD
2 stops21h 26mDelta
Deal found 5/6$576
Thu 9/124:00 pmORD - BHD
1 stop16h 50mLufthansa
Deal found 5/6$585

Find flights from Illinois to Belfast within your budget

Customize your flight search to find flights from Illinois to Belfast 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 2,689,106 searches. Data last updated May 7, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$758 - $1,370

Route

Depart

Return

Price

Chicago O'Hare IntlBelfast City

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 5/22

1 stop10h 35m

Belfast City

Wed 6/5

1 stop11h 55m

$758

Chicago O'Hare IntlBelfast City

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Thu 8/15

1 stop10h 55m

Belfast City

Mon 8/19

1 stop22h 15m

$766

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Mon 9/2

2 stops16h 50m

Belfast City

Mon 9/9

2 stops36h 15m

$774

Chicago O'Hare IntlBelfast City

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Fri 5/24

1 stop15h 45m

Belfast City

Fri 6/7

2 stops18h 08m

$793

Chicago O'Hare IntlBelfast City

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Sun 5/26

2 stops17h 06m

Belfast City

Wed 6/5

1 stop26h 55m

$794

Chicago O'Hare IntlBelfast City

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Wed 5/22

1 stop16h 50m

Belfast City

Thu 6/6

2 stops26h 40m

$1,000

Chicago O'Hare IntlBelfast City

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 8/26

2 stops13h 00m

Belfast City

Thu 8/29

2 stops16h 24m

$1,038

Chicago MidwayBelfast City

MDW - BHD

MDWBHD

Chicago Midway

Wed 9/25

2 stops25h 15m

Belfast City

Sun 9/29

2 stops54h 45m

$1,316

Chicago O'Hare IntlBelfast City

ORD - BHD

ORDBHD

Chicago O'Hare Intl

Mon 8/26

1 stop14h 45m

Belfast City

Thu 8/29

1 stop17h 40m

$1,370

Flights are sorted by cheapest first

Deals found on 5/6

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belfast. Reviews last updated May 7, 2024.
Read through reviews of airlines operating flights from Illinois to Belfast, such as British Airways, KLM and American Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very good
10,818 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Food

7.4

Overall

8.1

Crew

8.6

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.1
Very good
10,818 reviews
Delta
8.1
Very good
10,818 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Food

7.4

Overall

8.1

Crew

8.6

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

KLM
7.9
Good
1,602 reviews
Delta
8.1
Very good
10,818 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Food

7.4

Overall

8.1

Crew

8.6

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Virgin Atlantic
7.7
Good
740 reviews
Delta
8.1
Very good
10,818 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Food

7.4

Overall

8.1

Crew

8.6

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

American Airlines
7.3
Good
14,697 reviews
Delta
8.1
Very good
10,818 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Food

7.4

Overall

8.1

Crew

8.6

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Iberia
7.1
Good
2,749 reviews
Delta
8.1
Very good
10,818 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Food

7.4

Overall

8.1

Crew

8.6

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from Illinois to Belfast for under $800 on Cheapflights?

    Yes, there are multiple flights from Illinois to Belfast for under $800. The cheapest flight booked recently is on British Airways for just $758, but on average you can expect to pay $795.

  • What are the cheapest airlines to fly from Illinois to Belfast one-way?

    $559 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and Lufthansa, with prices starting from $576 and $585, respectively.

  • What are the most popular routes from Illinois to Belfast?

    The most popular flight routes from Illinois to Belfast are Chicago O'Hare Intl - Belfast Intl, Chicago O'Hare Intl - Belfast City and Chicago Midway - Belfast City.

  • What does ORD to BFS mean?

    Chicago O'Hare Intl Airport is ORD and Belfast Intl Airport is BFS. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Belfast City Airport (BHD), Glasgow Prestwick Airport (PIK), Londonderry Eglinton Airport (LDY), Isle of Islay Glenegedale Airport (ILY), Campbeltown Machrihanish Airport (CAL).

  • Can I find deals for flights from Illinois to Belfast that include extra baggage allowance?

    The amount of baggage you can bring on your Illinois to Belfast flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Illinois to Belfast with specific airlines?

    Yes, Cheapflights allows you to browse and filter Illinois to Belfast flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Illinois to Belfast that include hotel bookings?

    Yes. In addition to deals on Illinois to Belfast flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Belfast?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Belfast.

  • Can I find deals for business class flights from Illinois to Belfast?

    Yes. Cheapflights offers flight deals from Illinois to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Illinois to Belfast that allow pets onboard?

    Many airlines flying from Illinois to Belfast offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Illinois to Belfast?

    Yes, you can often find last-minute deals on Illinois to Belfast flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Illinois to Belfast flight deals updated?

    The Illinois to Belfast flight deals you see on this page were last updated on 5/6.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Belfast
See prices for flight routes from nearby airports that may be better suited for you.

John F Kennedy Intl to Belfast Intl flights
John F Kennedy Intl to Belfast City flights
Boston to Belfast Intl flights
Seattle to Belfast City flights
Newark to Belfast Intl flights
Newark to Belfast City flights
Los Angeles to Belfast Intl flights
San Francisco to Belfast City flights
Boston to Belfast City flights
Los Angeles to Belfast City flights
Dallas/Fort Worth to Belfast City flights
Austin to Belfast City flights
Atlanta to Belfast Intl flights
Dulles Intl to Belfast City flights
LaGuardia to Belfast Intl flights
LaGuardia to Belfast City flights
Dallas/Fort Worth to Belfast Intl flights
Baltimore to Belfast City flights
Atlanta to Belfast City flights
Denver to Belfast City flights
O'Hare Intl to Belfast Intl flights
O'Hare Intl to Belfast City flights
Reagan-National to Belfast City flights
Wichita to Belfast City flights
Love Field to Belfast City flights
Philadelphia to Belfast City flights
Sky Harbor Intl to Belfast City flights
Charlotte to Belfast City flights
Detroit to Belfast City flights
Grand Rapids to Belfast City flights
Midway to Belfast City flights
Portland to Belfast City flights
Stewart to Belfast Intl flights
Newark to Derry flights
Orlando to Belfast Intl flights
Pittsburgh to Belfast City flights
Raleigh to Belfast City flights
Orlando to Belfast City flights
Hartford to Belfast City flights
Buffalo to Belfast City flights
George Bush Intcntl to Belfast City flights
Little Rock to Belfast City flights
Kansas City to Belfast City flights
Miami to Belfast Intl flights
Minneapolis to Belfast City flights
New Orleans to Belfast City flights
Miami to Belfast City flights
Nashville to Belfast City flights
Akron to Belfast City flights

Top 2 airlines flying from Illinois to Belfast

Discover the top 2 airlines that operate flights from Illinois to Belfast. 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 2,689,106 searches. Data last updated May 7, 2024.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$640Average$872FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest$653Average$782FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Tampa to London flights
Los Angeles to Manila flights
Los Angeles to Puerto Vallarta flights
Honolulu to Maui flights
Detroit to Orlando flights
Cleveland to Orlando flights
Dallas to Atlanta flights
New York to Rome flights
Boston to West Palm Beach flights
San Francisco to Chicago flights
Illinois to Bijie flights

Search flights from Illinois to Belfast by cabin class

Find flights from Illinois to Belfast, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Saint Peter Jersey
Flights to Kirkwall Arpt
Flights to Skiathos
Flights to Naxos
Flights to Ningbo Lishe Intl
Flights to Edremit/Korfez
Flights to Bourgas
Flights to Bodø
Flights to Pellston Emmet County
Flights to Cornwall Newquay
Flights to Ordu/Giresun
Flights to Batumi
Flights to Mason City
Flights to Biarritz Parme
Flights to Zakynthos Dionsios Salomos
Flights to Cortez Montezuma County
Flights to Clermont-Ferrand Aulnat
Flights to Nevsehir
Flights to Hyannis Barnstable
Flights to Girona Costa Brava
Flights to Kagoshima
Flights to Perugia Sant Egidio
Flights to Oran Es Senia
Flights to Chios

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Illinois to Belfast?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Belfast from Illinois today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Illinois to Belfast?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Illinois to Belfast for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Illinois to Belfast with no change fees?

Yes, we can. To see specific flights from Illinois to Belfast with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Illinois to Belfast become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Belfast from Illinois today and book when prices fit your budget.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines