Which airlines fly to Chicago?

Based on our data, the most popular airlines that fly to Chicago from United Kingdom are British Airways, Aer Lingus, Lufthansa and Icelandair. There may also be other airline options depending on where in United Kingdom you’re flying from.

Austrian Airlines Flights to Chicago

Austrian Airlines will jet to Chicago around 20 times in an average week. Where you fly from will dictate what kind of deals you can get for Austrian Airlines, but prices as low as £412 have been found from London Heathrow to Chicago. Austrian Airlines has scored 7.6/10 in momondo user reviews.

How long does it take to fly to Chicago?

On average, it takes 8h 40m to fly from United Kingdom to Chicago if you fly out of London Heathrow (the most popular airport in United Kingdom) and into Chicago O'Hare Intl (the most popular airport in Chicago). If you’re flying out of Manchester and into Chicago O'Hare Intl, then the flight time is around 11h 10m.

£295 Cheap Flights to Chicago in 2025/26

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Find the cheapest flights from the United Kingdom to Chicago

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20:35 - 17:20LHR-ORD

26h 45m1 stop

18:30 - 10:50ORD-LHR

10h 20m1 stop

£413Icelandair

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Sat, 10 Jan - Sun, 25 Jan

10:20 - 16:45LHR-ORD

12h 25m1 stop

19:20 - 16:00ORD-LHR

14h 40m1 stop

£414Scandinavian Airlines

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Thu, 25 Dec - Wed, 31 Dec

10:20 - 16:45LHR-ORD

12h 25m1 stop

19:20 - 16:25ORD-LHR

15h 05m2 stops

£415Scandinavian Airlines

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Sat, 6 Dec - Mon, 8 Dec

12:15 - 17:20LHR-ORD

11h 05m1 stop

18:30 - 10:50ORD-LHR

10h 20m1 stop

£416Icelandair

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Mon, 12 Jan - Tue, 20 Jan

12:05 - 16:20LHR-ORD

34h 15m1 stop

20:15 - 06:30ORD-LHR

28h 15m1 stop

£420United Airlines

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Fri, 6 Feb - Sat, 7 Feb

15:50 - 23:47LHR-MDW

13h 57m1 stop

17:29 - 11:40MDW-LHR

12h 11m1 stop

£503Virgin Atlantic

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Wed, 10 Dec - Wed, 17 Dec

06:30 - 17:32LHR-MDW

17h 02m2 stops

09:34 - 06:50MDW-LHR

15h 16m2 stops

£526Virgin Atlantic

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Wed, 4 Feb - Wed, 18 Feb

08:20 - 14:00EDI-ORD

11h 40m1 stop

21:00 - 14:45ORD-EDI

11h 45m1 stop

£536Aer Lingus

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Tue, 9 Dec - Sun, 11 Jan

08:20 - 17:55EDI-ORD

15h 35m1 stop

21:00 - 19:50ORD-EDI

16h 50m1 stop

£546Aer Lingus

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Tue, 9 Dec - Tue, 13 Jan

06:25 - 13:50EDI-ORD

13h 25m1 stop

19:45 - 12:20ORD-EDI

11h 35m1 stop

£569British Airways

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Wed, 25 Feb - Tue, 10 Mar

Fly from

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 10/1

20:35-17:20

1 stop26h 45m

Chicago O'Hare Intl

Sun 25/1

18:30-10:50

1 stop10h 20m

£413

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 25/12

10:20-16:45

1 stop12h 25m

Chicago O'Hare Intl

Wed 31/12

19:20-16:00

1 stop14h 40m

£414

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sat 6/12

10:20-16:45

1 stop12h 25m

Chicago O'Hare Intl

Mon 8/12

19:20-16:25

2 stops15h 05m

£415

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 12/1

12:15-17:20

1 stop11h 05m

Chicago O'Hare Intl

Tue 20/1

18:30-10:50

1 stop10h 20m

£416

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 6/2

12:05-16:20

1 stop34h 15m

Chicago O'Hare Intl

Sat 7/2

20:15-06:30

1 stop28h 15m

£420

LondonChicago

LHR - MDW

LHRMDW

London Heathrow

Wed 10/12

15:50-23:47

1 stop13h 57m

Chicago Midway

Wed 17/12

17:29-11:40

1 stop12h 11m

£503

LondonChicago

LHR - MDW

LHRMDW

London Heathrow

Wed 4/2

06:30-17:32

2 stops17h 02m

Chicago Midway

Wed 18/2

09:34-06:50

2 stops15h 16m

£526

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Tue 9/12

08:20-14:00

1 stop11h 40m

Chicago O'Hare Intl

Sun 11/1

21:00-14:45

1 stop11h 45m

£536

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Tue 9/12

08:20-17:55

1 stop15h 35m

Chicago O'Hare Intl

Tue 13/1

21:00-19:50

1 stop16h 50m

£546

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Wed 25/2

06:25-13:50

1 stop13h 25m

Chicago O'Hare Intl

Tue 10/3

19:45-12:20

1 stop11h 35m

£569

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Chicago flights insights and trends

Explore insights for your Chicago flight to craft the best travel plan

Prices

Other information

What is the cheapest month to fly to Chicago?

The cheapest month to fly to Chicago from United Kingdom is in February. Flight prices, which tend to average around £439, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Chicago from United Kingdom during September instead. Flights to Chicago in September, while not as cheap as those in February, still average around £442.

What is the absolute cheapest flight to Chicago?

The best price found on momondo to Chicago was £68/pp from Tampa, which is 71% cheaper than the average flight price to Chicago. To find the cheapest price to Chicago from your area, use momondo’s Airport-to-Airport Pricing Tool.

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What is the cheapest day to depart on your flight to Chicago?

The cheapest day to depart on your flight to Chicago is on a Wednesday when prices can be found for as low as £625. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Chicago is Saturday, with ticket prices averaging around £684.

What is the cheapest time of day to depart on your flight to Chicago?

Flying to Chicago from United Kingdom in the evening is the least expensive time of day to depart. momondo users have found prices as low as £510 when looking at flights departing in the evening. Flights in the afternoon are often more expensive, with an average ticket price of £686.

How far in advance should I book a flight to Chicago?

You are more likely to see cheaper flights to Chicago from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around £555 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from United Kingdom for as low as £524 on momondo.

Cheapest flights to Chicago

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CHEAPEST MONTH TO FLY TO CHICAGO FROM LONDON HEATHROW AIRPORT	February	17% cheaper	Flying from London Heathrow Airport to Chicago costs on average just £454 in February
MOST EXPENSIVE MONTH TO FLY TO CHICAGO FROM LONDON HEATHROW AIRPORT	July	20% more expensive	It costs about £653 for flights to Chicago from London Heathrow Airport in July
MOST POPULAR MONTH TO FLY TO CHICAGO FROM LONDON HEATHROW AIRPORT	July	228% more users visited	More momondo users searched in flights to Chicago from London Heathrow Airport in July than any other month

Cheap Chicago flight deals and tips

Summary info about Chicago flight prices, duration and airlines

Best One-Way Price	£295
Best Round-Trip Price	£415
Fastest flight time	8h 35m
Popular in	July

The best one-way flight price to Chicago from United Kingdom in the last 72 hours is £295 (Edinburgh Turnhouse to Chicago O'Hare Intl).

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The best round-trip flight price to Chicago from United Kingdom in the last 72 hours is £415 (London Heathrow to Chicago O'Hare Intl).

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The fastest flight to Chicago from United Kingdom takes 8h 35m (Edinburgh Turnhouse to Chicago O'Hare Intl).

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July has the highest demand for flights to Chicago, with a 15% price increase on average.

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Frequently asked questions about flying to Chicago

When is it best to fly to Chicago to go sightseeing?

When planning your flight to Chicago, consider that the months of May and June are typically considered the best times to visit if you are looking to go sightseeing. That is when the weather is most cooperative. Sights like Magnificent Mile, Grant Park, and Millennium Park are very popular tourist attractions.

How far in advance should I book a flight to Chicago?

The ideal time to book your flight to Chicago is 88 days in advance, when prices tend to average £529. However, in the past 72 hours, people saw flights from United Kingdom for as low as £451.

Is there an alternative airport near Chicago?

Finding an alternative and possibly cheaper destination airport near Chicago is possible. If you are planning a flight to Chicago, consider booking flights to Chicago Midway Airport (9 mi from Chicago city centre) or Chicago Greater Rockford Airport (79 mi from Chicago city centre).

Is there a cheaper alternative to flying into Chicago?

Prices vary based on where travellers are departing from, but on average, the cheapest airport to fly to in Chicago is Chicago Midway Airport where the average price is £235. Users typically find the best prices when using momondo’s Airport-to-Airport Pricing Tool.

Are there flights to Downtown?

Yes, flights to Downtown are served by Chicago’s Chicago O'Hare Intl airport which is 15.7 mi away.

What’s the closest airport to Union Station?

The closest airport to Union Station is Chicago O'Hare Intl, 15.3 mi away.

When did momondo last update prices for flights to Chicago?

Prices for flights to Chicago were last updated today.

How many operators does momondo search for flights to Chicago?

As of November 2025, there are 28 operators available to choose from for flights to Chicago.

How old do you have to be to fly to Chicago?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel to Chicago.

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

The necessary travel and health documents for your Chicago 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.

Why use momondo?

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

It is quick and easy to find flights to Chicago on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Chicago that suits you.

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

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

How can momondo help me find flights to Chicago?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight to Chicago.

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

Yes momondo offers price alerts on flights to Chicago. 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.

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£260 Cheap flights to Chicago

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Chicago departing on 4/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Chicago flights insights and trends

Explore insights for your Chicago flight to craft the best travel plan

What is the cheapest month to fly to Chicago?

What is the absolute cheapest flight to Chicago?

The best price found on momondo to Chicago was £68/pp from Tampa, which is 71% cheaper than the average flight price to Chicago. To find the cheapest price to Chicago from your area, use momondo’s Airport-to-Airport Pricing Tool.

See prices from:

What is the cheapest day to depart on your flight to Chicago?

What is the cheapest time of day to depart on your flight to Chicago?

Flying to Chicago from United Kingdom in the evening is the least expensive time of day to depart. momondo users have found prices as low as £510 when looking at flights departing in the evening. Flights in the afternoon are often more expensive, with an average ticket price of £686.

How far in advance should I book a flight to Chicago?

How long does it take to fly to Chicago?

Cheapest flights to Chicago

Find the cheapest flights to Chicago from your nearest city or airport

Cheap Chicago flight deals and tips

Summary info about Chicago flight prices, duration and airlines

Best One-Way Price

Best Round-Trip Price

Fastest flight time

Popular in

Frequently asked questions about flying to Chicago

When is it best to fly to Chicago to go sightseeing?

How far in advance should I book a flight to Chicago?

Is there an alternative airport near Chicago?

Is there a cheaper alternative to flying into Chicago?

Are there flights to Downtown?

What’s the closest airport to Union Station?

When did momondo last update prices for flights to Chicago?

How many operators does momondo search for flights to Chicago?

How old do you have to be to fly to Chicago?

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

Why use momondo?

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

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

How can momondo help me find flights to Chicago?

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

An easier way to manage your Chicago trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Chicago

Popular Flights to Chicago

Popular routes according to searches in the past day on momondo