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.

KLM Flights to Chicago

KLM will jet to Chicago around 15 times in an average week. Where you fly from will dictate what kind of deals you can get for KLM, but prices as low as £464 have been found from Birmingham to Chicago. KLM has scored 7.7/10 in momondo user reviews.

Austrian Airlines Flights to Chicago

Another popular choice for flights to Chicago is Austrian Airlines (7.6/10, 865 reviews). Most Austrian Airlines flights landing in Chicago will be arriving from London Heathrow, but there are 19 Austrian Airlines flights to Chicago from all departure points globally so prices can vary significantly. The best Austrian Airlines deal found on momondo this week was £414 (London Heathrow to Chicago, round-trip).

How long does it take to fly to Chicago?

On average, it takes 8h 35m 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 55m.

£276 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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Cheap return flights

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06:40 - 16:45LHR-ORD

16h 05m1 stop

19:20 - 17:40ORD-LHR

16h 20m1 stop

£409Scandinavian Airlines

Find Deal

Mon, 24 Nov - Mon, 8 Dec

11:55 - 17:20LGW-ORD

11h 25m1 stop

18:30 - 10:55ORD-LGW

10h 25m1 stop

£410Icelandair

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Thu, 19 Feb - Mon, 23 Feb

06:40 - 16:45LHR-ORD

16h 05m2 stops

19:20 - 18:50ORD-LHR

17h 30m2 stops

£410Scandinavian Airlines

Find Deal

Thu, 4 Dec - Wed, 14 Jan

10:45 - 17:45LHR-MDW

13h 00m1 stop

17:59 - 08:45MDW-LHR

9h 46m1 stop

£518Virgin Atlantic

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Tue, 3 Mar - Tue, 17 Mar

06:30 - 17:32LHR-MDW

17h 02m2 stops

09:34 - 06:50MDW-LHR

15h 16m2 stops

£524Virgin Atlantic

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Mon, 2 Feb - Thu, 12 Feb

08:20 - 17:55EDI-ORD

15h 35m1 stop

21:00 - 19:50ORD-EDI

16h 50m1 stop

£530Aer Lingus

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Tue, 9 Dec - Thu, 15 Jan

08:20 - 14:00EDI-ORD

11h 40m1 stop

15:50 - 07:50ORD-EDI

10h 00m1 stop

£531Aer Lingus

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Fri, 21 Nov - Sat, 13 Dec

09:50 - 20:05LCY-ORD

16h 15m1 stop

17:20 - 09:15ORD-LCY

10h 55m1 stop

£543Lufthansa

Find Deal

Wed, 4 Mar - Tue, 10 Mar

09:50 - 20:05LCY-ORD

16h 15m1 stop

17:20 - 09:15ORD-LCY

10h 55m1 stop

£544Lufthansa

Find Deal

Wed, 4 Mar - Tue, 10 Mar

06:25 - 13:50EDI-ORD

13h 25m1 stop

22:45 - 16:50ORD-EDI

13h 05m1 stop

£569British Airways

Find Deal

Wed, 25 Feb - Tue, 10 Mar

Fly from

Route

Depart

Return

Price

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Mon 24/11

06:40-16:45

1 stop16h 05m

Chicago O'Hare Intl

Mon 8/12

19:20-17:40

1 stop16h 20m

£409

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 19/2

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Mon 23/2

18:30-10:55

1 stop10h 25m

£410

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 4/12

06:40-16:45

2 stops16h 05m

Chicago O'Hare Intl

Wed 14/1

19:20-18:50

2 stops17h 30m

£410

LondonChicago

LHR - MDW

LHRMDW

London Heathrow

Tue 3/3

10:45-17:45

1 stop13h 00m

Chicago Midway

Tue 17/3

17:59-08:45

1 stop9h 46m

£518

LondonChicago

LHR - MDW

LHRMDW

London Heathrow

Mon 2/2

06:30-17:32

2 stops17h 02m

Chicago Midway

Thu 12/2

09:34-06:50

2 stops15h 16m

£524

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Tue 9/12

08:20-17:55

1 stop15h 35m

Chicago O'Hare Intl

Thu 15/1

21:00-19:50

1 stop16h 50m

£530

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Fri 21/11

08:20-14:00

1 stop11h 40m

Chicago O'Hare Intl

Sat 13/12

15:50-07:50

1 stop10h 00m

£531

LondonChicago

LCY - ORD

LCYORD

London City

Wed 4/3

09:50-20:05

1 stop16h 15m

Chicago O'Hare Intl

Tue 10/3

17:20-09:15

1 stop10h 55m

£543

LondonChicago

LCY - ORD

LCYORD

London City

Wed 4/3

09:50-20:05

1 stop16h 15m

Chicago O'Hare Intl

Tue 10/3

17:20-09:15

1 stop10h 55m

£544

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Wed 25/2

06:25-13:50

1 stop13h 25m

Chicago O'Hare Intl

Tue 10/3

22:45-16:50

1 stop13h 05m

£569

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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 £442, 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 £446.

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 £628. 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 £687.

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 £513 when looking at flights departing in the evening. Flights in the afternoon are often more expensive, with an average ticket price of £689.

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 £560 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 £529 on momondo.

Cheapest flights to Chicago

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

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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 £456 in February
MOST EXPENSIVE MONTH TO FLY TO CHICAGO FROM LONDON HEATHROW AIRPORT	July	20% more expensive	It costs about £658 for flights to Chicago from London Heathrow Airport in July
MOST POPULAR MONTH TO FLY TO CHICAGO FROM LONDON HEATHROW AIRPORT	July	248% 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	£276
Best Round-Trip Price	£409
Fastest flight time	13h 50m
Popular in	July

The best one-way flight price to Chicago from United Kingdom in the last 72 hours is £276 (Manchester 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 £409 (London Heathrow to Chicago O'Hare Intl).

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The fastest flight to Chicago from United Kingdom takes 13h 50m (London Heathrow 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 £532. However, in the past 72 hours, people saw flights from United Kingdom for as low as £453.

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 £237. 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.