Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Chicago to Belfast from $290

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Belfast departing on 11/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Chicago to Belfast

Cheap round-trip flights

Logo
10:15 pm - 8:20 pmORD-BFS
16h 05m2 stops
Logo
9:55 am - 9:15 pmBFS-ORD
17h 20m2 stops
$731
Find Deal
Sun, Sep 14 - Sun, Sep 21
Logo
6:10 am - 9:30 pmORD-BFS
33h 20m3 stops
Logo
8:30 am - 4:40 pmBFS-ORD
38h 10m3 stops
$893
Find Deal
Sun, Sep 14 - Sun, Sep 21
Logo
2:00 pm - 3:55 pmORD-BFS
19h 55m2 stops
Logo
8:30 am - 4:40 pmBFS-ORD
38h 10m3 stops
$913
Find Deal
Sun, Sep 14 - Sun, Sep 21
Logo
7:10 pm - 10:50 pmORD-BFS
21h 40m2 stops
Logo
10:35 am - 9:10 amBFS-ORD
28h 35m3 stops
$952
Find Deal
Wed, Dec 17 - Sat, Jan 24
Logo
7:10 pm - 10:30 pmORD-BFS
21h 20m3 stops
Logo
10:35 am - 9:10 amBFS-ORD
28h 35m3 stops
$976
Find Deal
Wed, Dec 17 - Sat, Jan 24
Logo
10:15 am - 12:50 pmORD-BFS
20h 35m2 stops
Logo
10:10 am - 6:45 pmBFS-ORD
14h 35m1 stop
$1,099
Find Deal
Wed, Dec 17 - Sat, Jan 24
Logo
7:10 pm - 10:50 pmORD-BFS
21h 40m2 stops
Logo
6:00 am - 7:15 pmBFS-ORD
19h 15m2 stops
$1,142
Find Deal
Wed, Dec 17 - Sat, Jan 24
Logo
9:15 am - 4:15 pmMDW-BFS
25h 00m3 stops
Logo
6:10 am - 4:24 pmBFS-MDW
40h 14m3 stops
$1,397
Find Deal
Thu, Aug 28 - Thu, Sep 4

momondo Fare Finder

 
Customize your flight search to find flights from Chicago to Belfast Intl Airport 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, momondo users made 832,500 searches. Data last updated August 2, 2025.
Use the filters below to find and compare flights from Chicago to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 9/14

10:15 pm-8:20 pm

2 stops16h 05m

Belfast Intl

Sun 9/21

9:55 am-9:15 pm

2 stops17h 20m

$731

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 9/14

6:10 am-9:30 pm

3 stops33h 20m

Belfast Intl

Sun 9/21

8:30 am-4:40 pm

3 stops38h 10m

$893

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Sun 9/14

2:00 pm-3:55 pm

2 stops19h 55m

Belfast Intl

Sun 9/21

8:30 am-4:40 pm

3 stops38h 10m

$913

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 12/17

7:10 pm-10:50 pm

2 stops21h 40m

Belfast Intl

Sat 1/24

10:35 am-9:10 am

3 stops28h 35m

$952

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 12/17

7:10 pm-10:30 pm

3 stops21h 20m

Belfast Intl

Sat 1/24

10:35 am-9:10 am

3 stops28h 35m

$976

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 12/17

10:15 am-12:50 pm

2 stops20h 35m

Belfast Intl

Sat 1/24

10:10 am-6:45 pm

1 stop14h 35m

$1,099

ChicagoBelfast

ORD - BFS

ORDBFS

Chicago O'Hare Intl

Wed 12/17

7:10 pm-10:50 pm

2 stops21h 40m

Belfast Intl

Sat 1/24

6:00 am-7:15 pm

2 stops19h 15m

$1,142

ChicagoBelfast

MDW - BFS

MDWBFS

Chicago Midway

Thu 8/28

9:15 am-4:15 pm

3 stops25h 00m

Belfast Intl

Thu 9/4

6:10 am-4:24 pm

3 stops40h 14m

$1,397

ChicagoBelfast

MDW - BFS

MDWBFS

Chicago Midway

Thu 11/20

5:56 pm-12:35 pm

2 stops36h 39m

$290

ChicagoBelfast

MDW - BFS

MDWBFS

Chicago Midway

Thu 11/20

5:56 pm-8:20 am

3 stops32h 24m

$297

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

See travel insights to Belfast from

How to get the cheapest flight ticket from Chicago to Belfast Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Belfast Intl Airport?

The cheapest day to depart on your flight to Belfast Intl Airport is on a Wednesday when prices can be found for as low as $649. This is often the case because there is less demand to fly during this day of the week. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Chicago to Belfast Intl Airport for around $938.

What is the cheapest time of day to depart on your flight to Belfast Intl Airport?

In the evening is the cheapest time of day to fly from Chicago to Belfast Intl Airport when you can find flight prices for as low as $769. Flying to Belfast Intl Airport in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Belfast Intl Airport is in the afternoon when prices are around $804.

When to book flights from Chicago to Belfast Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Belfast Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago to Belfast Intl Airport (CHI to BFS) flight deals and tips

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

Best Price Found

$290

Fastest flight time

12h 50m

Direct flights

None
The best one-way flight to Belfast Intl Airport from Chicago in the past 72 hours is $290. The best round-trip flight deal from Chicago to Belfast Intl Airport found on momondo in the last 72 hours is $731.
The fastest flight from Chicago to Belfast Intl Airport takes 12h 50m
There are no direct flights from Chicago to Belfast Intl Airport. Popular non-direct routes for this connection are Chicago Midway Airport - Belfast Intl Airport and Chicago O'Hare Intl Airport - Belfast Intl Airport.
Search flight deals

  • How far is Chicago to Belfast Intl by plane?

    Chicago and Belfast Intl are 3624.6 mi apart from one another. Flights usually cover this in 16h 05m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Chicago to Belfast Intl Airport were last updated today.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Belfast Intl Airport.

  • What documentation or ID do you need to fly to Belfast Intl Airport?

    The necessary travel and health documents for your Belfast Intl Airport 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.

  • What is the most popular airline from Chicago to Belfast Intl Airport?

Best airlines flying from Chicago to Belfast Intl Airport

Compare and see reviews for airlines that fly from Chicago to Belfast Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $577Free CancellationRating
6.6
7,224 reviews
Search British Airways flights

Traveling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Newry
Armagh
Cookstown
Dungannon

Why use momondo?

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

Finding the right flight to Belfast from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Belfast quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Belfast from Chicago with this policy.

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

Once all potential Chicago to Belfast flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

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

An easier way to manage your Belfast Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 8/7
Thu 8/14
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Belfast

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to London Heathrow Airportfrom $348
Flights to London Gatwick Airportfrom $296
Flights to London City Airportfrom $471
Flights to London Stansted Airportfrom $417
Flights to London Luton Airportfrom $426
Flights to London Southend Airportfrom $518
Flights to Glasgow Intl Airportfrom $417
Flights to Belfast City Airportfrom $484