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 £456 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, 863 reviews). Most Austrian Airlines flights landing in Chicago will be arriving from London Heathrow, but there are 12 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 £407 (London Heathrow to Chicago, round-trip).

How long does it take to fly to Chicago?

On average, it takes 8h 25m 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 12h 20m.

£236 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

Enter your travel dates to find the best prices.

05:50 - 17:20LTN-ORD

17h 30m2 stops

18:30 - 20:05ORD-LTN

19h 35m2 stops

£398Multiple Airlines

Find Deal

Fri, 7 Nov - Tue, 11 Nov

06:30 - 17:20STN-ORD

16h 50m2 stops

18:30 - 21:20ORD-STN

20h 50m2 stops

£398Multiple Airlines

Find Deal

Thu, 13 Nov - Fri, 28 Nov

11:55 - 17:20LGW-ORD

11h 25m1 stop

18:30 - 10:55ORD-LGW

10h 25m1 stop

£418Icelandair

Find Deal

Wed, 12 Nov - Thu, 27 Nov

11:55 - 17:20LGW-ORD

11h 25m1 stop

18:30 - 10:55ORD-LGW

10h 25m1 stop

£419Icelandair

Find Deal

Mon, 3 Nov - Thu, 6 Nov

12:25 - 19:15MAN-ORD

12h 50m1 stop

21:00 - 13:25ORD-MAN

10h 25m1 stop

£495Aer Lingus

Find Deal

Tue, 3 Feb - Tue, 10 Feb

09:50 - 20:05LCY-ORD

16h 15m1 stop

22:35 - 16:40ORD-LCY

12h 05m1 stop

£502Lufthansa

Find Deal

Mon, 24 Nov - Mon, 8 Dec

08:20 - 17:55EDI-ORD

15h 35m1 stop

19:40 - 14:45ORD-EDI

13h 05m1 stop

£530Aer Lingus

Find Deal

Sat, 6 Dec - Sat, 13 Dec

09:50 - 20:05LCY-ORD

16h 15m1 stop

17:20 - 16:40ORD-LCY

18h 20m1 stop

£544Lufthansa

Find Deal

Wed, 4 Mar - Tue, 10 Mar

09:25 - 15:25EDI-ORD

12h 00m1 stop

21:45 - 16:50ORD-EDI

13h 05m1 stop

£592British Airways

Find Deal

Thu, 19 Feb - Tue, 24 Feb

09:25 - 15:25EDI-ORD

12h 00m1 stop

17:10 - 10:05ORD-EDI

10h 55m1 stop

£682British Airways

Find Deal

Thu, 6 Nov - Fri, 14 Nov

Fly from

Route

Depart

Return

Price

LondonChicago

LTN - ORD

LTNORD

London Luton

Fri 7/11

05:50-17:20

2 stops17h 30m

Chicago O'Hare Intl

Tue 11/11

18:30-20:05

2 stops19h 35m

£398

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 13/11

06:30-17:20

2 stops16h 50m

Chicago O'Hare Intl

Fri 28/11

18:30-21:20

2 stops20h 50m

£398

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Wed 12/11

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Thu 27/11

18:30-10:55

1 stop10h 25m

£418

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Mon 3/11

11:55-17:20

1 stop11h 25m

Chicago O'Hare Intl

Thu 6/11

18:30-10:55

1 stop10h 25m

£419

ManchesterChicago

MAN - ORD

MANORD

Manchester

Tue 3/2

12:25-19:15

1 stop12h 50m

Chicago O'Hare Intl

Tue 10/2

21:00-13:25

1 stop10h 25m

£495

LondonChicago

LCY - ORD

LCYORD

London City

Mon 24/11

09:50-20:05

1 stop16h 15m

Chicago O'Hare Intl

Mon 8/12

22:35-16:40

1 stop12h 05m

£502

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Sat 6/12

08:20-17:55

1 stop15h 35m

Chicago O'Hare Intl

Sat 13/12

19:40-14:45

1 stop13h 05m

£530

LondonChicago

LCY - ORD

LCYORD

London City

Wed 4/3

09:50-20:05

1 stop16h 15m

Chicago O'Hare Intl

Tue 10/3

17:20-16:40

1 stop18h 20m

£544

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Thu 19/2

09:25-15:25

1 stop12h 00m

Chicago O'Hare Intl

Tue 24/2

21:45-16:50

1 stop13h 05m

£592

EdinburghChicago

EDI - ORD

EDIORD

Edinburgh Turnhouse

Thu 6/11

09:25-15:25

1 stop12h 00m

Chicago O'Hare Intl

Fri 14/11

17:10-10:05

1 stop10h 55m

£682

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 £433, 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 £438.

What is the absolute cheapest flight to Chicago?

The best price found on momondo to Chicago was £102/pp from Washington, D.C., which is 52% 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 £616. 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 £677.

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 £504 when looking at flights departing in the evening. Flights in the afternoon are often more expensive, with an average ticket price of £677.

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 £548 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 £520 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 £444 in February
MOST EXPENSIVE MONTH TO FLY TO CHICAGO FROM LONDON HEATHROW AIRPORT	July	20% more expensive	It costs about £645 for flights to Chicago from London Heathrow Airport in July
MOST POPULAR MONTH TO FLY TO CHICAGO FROM LONDON HEATHROW AIRPORT	July	249% 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	£236
Best Round-Trip Price	£398
Fastest flight time	12h 00m
Popular in	July

The best one-way flight price to Chicago from United Kingdom in the last 72 hours is £236 (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 £398 (London Luton to Chicago O'Hare Intl).

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The fastest flight to Chicago from United Kingdom takes 12h 00m (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 Chicago Riverwalk 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 £521. However, in the past 72 hours, people saw flights from United Kingdom for as low as £445.

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 £215. 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 Midway airport which is 8.9 mi away.

What’s the closest airport to Union Station?

The closest airport to Union Station is Chicago Midway, 8.3 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 October 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.