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Cheap flights from Chicago O'Hare Intl Airport to the United Kingdom from $179

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 O'Hare Intl Airport to the United Kingdom departing on 9/8. 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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Find the cheapest flights from Chicago O'Hare Intl Airport to the United Kingdom

Cheap round-trip flights

Logo
10:27 am - 6:55 amORD-LGW
14h 28m1 stop
Logo
2:00 pm - 10:22 pmLGW-ORD
14h 22m1 stop
$423
Find Deal
Mon, Aug 18 - Tue, Aug 26
Scandinavian Airlines Logo
7:20 pm - 4:25 pmORD-LHR
15h 05m2 stops
Scandinavian Airlines Logo
10:20 am - 4:55 pmLHR-ORD
12h 35m1 stop
$426Scandinavian Airlines
Find Deal
Fri, Jan 16 - Sun, Jan 18
Icelandair Logo
10:15 pm - 2:40 pmORD-LGW
10h 25m1 stop
Icelandair Logo
3:40 pm - 6:15 pmLGW-ORD
32h 35m1 stop
$482Icelandair
Find Deal
Wed, Oct 8 - Mon, Oct 20
British Airways Logo
5:40 pm - 7:20 amORD-LHR
7h 40mnonstop
British Airways Logo
8:20 am - 3:45 pmLHR-ORD
13h 25m1 stop
$485British Airways
Find Deal
Wed, Sep 3 - Thu, Sep 18
British Airways Logo
9:15 pm - 11:05 amORD-LHR
7h 50mnonstop
British Airways Logo
6:20 am - 3:45 pmLHR-ORD
15h 25m1 stop
$486British Airways
Find Deal
Tue, Aug 26 - Tue, Sep 2
Icelandair Logo
10:15 pm - 2:40 pmORD-LGW
10h 25m1 stop
Icelandair Logo
3:40 pm - 9:15 pmLGW-ORD
11h 35m1 stop
$487Icelandair
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Fri, Sep 12 - Fri, Sep 19
United Airlines Logo
10:40 am - 6:30 amORD-LHR
13h 50m1 stop
United Airlines Logo
8:30 am - 11:25 amLHR-ORD
8h 55mnonstop
$488United Airlines
Find Deal
Sun, Aug 10 - Tue, Aug 19
United Airlines Logo
2:07 pm - 10:00 amORD-LHR
13h 53m1 stop
United Airlines Logo
8:00 am - 2:55 pmLHR-ORD
12h 55m1 stop
$490United Airlines
Find Deal
Sun, Aug 10 - Tue, Aug 19
American Airlines Logo
5:40 pm - 7:20 amORD-LHR
7h 40mnonstop
American Airlines Logo
8:25 am - 3:45 pmLHR-ORD
13h 20m1 stop
$491American Airlines
Find Deal
Sun, Aug 10 - Fri, Aug 29
American Airlines Logo
5:40 pm - 7:20 amORD-LHR
7h 40mnonstop
American Airlines Logo
7:40 am - 3:45 pmLHR-ORD
14h 05m1 stop
$492American Airlines
Find Deal
Sun, Aug 10 - Thu, Sep 4

Air Canada flights from Chicago O'Hare Intl Airport to United Kingdom

Our best Air Canada deals on Chicago O'Hare Intl Airport to United Kingdom flight tickets
Air Canada
Aug 10
ORD10:40 amChicago O'Hare Intl
17h 20m
1 stop
LHR10:00 amLondon Heathrow
Aug 28
LHR6:50 amLondon Heathrow
14h 05m
2 stops
ORD2:55 pmChicago O'Hare Intl
$479
Find similar
Air Canada
Aug 10
ORD2:07 pmChicago O'Hare Intl
10h 23m
1 stop
LHR6:30 amLondon Heathrow
Aug 19
LHR8:30 amLondon Heathrow
8h 55m
ORD11:25 amChicago O'Hare Intl
$502
Find similar
Air Canada
Aug 10
ORD2:07 pmChicago O'Hare Intl
10h 23m
1 stop
LHR6:30 amLondon Heathrow
Sep 4
LHR6:50 amLondon Heathrow
14h 05m
2 stops
ORD2:55 pmChicago O'Hare Intl
$512
Find similar

Finnair flights from Chicago O'Hare Intl Airport to United Kingdom

Our best Finnair deals on Chicago O'Hare Intl Airport to United Kingdom flight tickets
Finnair
Aug 10
ORD8:35 pmChicago O'Hare Intl
7h 55m
LHR10:30 amLondon Heathrow
Aug 28
LHR10:20 amLondon Heathrow
13h 30m
1 stop
ORD5:50 pmChicago O'Hare Intl
$489
Find similar
Finnair
Aug 10
ORD8:35 pmChicago O'Hare Intl
7h 55m
LHR10:30 amLondon Heathrow
Aug 19
LHR2:25 pmLondon Heathrow
8h 35m
ORD5:00 pmChicago O'Hare Intl
$518
Find similar
Finnair
Aug 10
ORD8:35 pmChicago O'Hare Intl
7h 55m
LHR10:30 amLondon Heathrow
Aug 19
LHR2:25 pmLondon Heathrow
8h 35m
ORD5:00 pmChicago O'Hare Intl
$519
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport to United Kingdom 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 July 31, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Mon 8/18

10:27 am-6:55 am

1 stop14h 28m

London Gatwick

Tue 8/26

2:00 pm-10:22 pm

1 stop14h 22m

$423

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 1/16

7:20 pm-4:25 pm

2 stops15h 05m

London Heathrow

Sun 1/18

10:20 am-4:55 pm

1 stop12h 35m

$426

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Wed 10/8

10:15 pm-2:40 pm

1 stop10h 25m

London Gatwick

Mon 10/20

3:40 pm-6:15 pm

1 stop32h 35m

$482

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 9/3

5:40 pm-7:20 am

Nonstop7h 40m

London Heathrow

Thu 9/18

8:20 am-3:45 pm

1 stop13h 25m

$485

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 8/26

9:15 pm-11:05 am

Nonstop7h 50m

London Heathrow

Tue 9/2

6:20 am-3:45 pm

1 stop15h 25m

$486

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Fri 9/12

10:15 pm-2:40 pm

1 stop10h 25m

London Gatwick

Fri 9/19

3:40 pm-9:15 pm

1 stop11h 35m

$487

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 8/10

10:40 am-6:30 am

1 stop13h 50m

London Heathrow

Tue 8/19

8:30 am-11:25 am

Nonstop8h 55m

$488

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 8/10

2:07 pm-10:00 am

1 stop13h 53m

London Heathrow

Tue 8/19

8:00 am-2:55 pm

1 stop12h 55m

$490

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 8/10

5:40 pm-7:20 am

Nonstop7h 40m

London Heathrow

Fri 8/29

8:25 am-3:45 pm

1 stop13h 20m

$491

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 8/10

5:40 pm-7:20 am

Nonstop7h 40m

London Heathrow

Thu 9/4

7:40 am-3:45 pm

1 stop14h 05m

$492

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to the United Kingdom from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to United Kingdom

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 month to fly to United Kingdom?

In general, April is the cheapest month to fly from Chicago O'Hare Intl Airport to United Kingdom. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $650. If you aren’t able to travel to United Kingdom during the month of April, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $651.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from Chicago O'Hare Intl Airport to United Kingdom is on a Tuesday when prices can be found for as low as $763. The most expensive day to fly to United Kingdom is Saturday, with ticket prices averaging around $893.

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

According to our data, the cheapest time of day to fly to United Kingdom is in the morning. momondo users have found flights departing from Chicago O'Hare Intl Airport to United Kingdom in the morning for as low as $685. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to United Kingdom are more costly in the afternoon, with an average ticket price of $824. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Chicago O'Hare Intl to United Kingdom flight route?

Fly from Chicago O'Hare Intl to London Heathrow for the best Chicago O'Hare Intl - United Kingdom flight prices

How far in advance should I book a flight to United Kingdom?

You are more likely to see cheaper flights to United Kingdom from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around $795 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from Chicago O'Hare Intl Airport for as low as $707 on momondo.

What cabin class options are available on Chicago O'Hare Intl to United Kingdom flights?

There are 4 cabin classes available to choose from on Chicago O'Hare Intl to United Kingdom flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Chicago O'Hare Intl Airport to United Kingdom flights?

You could potentially save up to 66% on your flight if you consider stops on a Chicago O'Hare Intl Airport to United Kingdom flight.

Cheap Chicago O'Hare Intl Airport to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to United Kingdom

Best Price Found

$179

Fastest flight time

7h 40m

Direct flights

Every day

Airports in United Kingdom

7 airports
The best one-way flight to United Kingdom from Chicago O'Hare Intl Airport in the past 72 hours is $179. The best round-trip flight deal from Chicago O'Hare Intl Airport to United Kingdom found on momondo in the last 72 hours is $423.
The fastest flight from Chicago O'Hare Intl Airport to United Kingdom takes 7h 40m
Direct flights go from Chicago O'Hare Intl Airport to United Kingdom every day.
There are 7 airports near United Kingdom: London City (LCY), London Heathrow (LHR), Southampton Eastleigh (SOU), Manchester (MAN), London Stansted (STN), London Gatwick (LGW), Glasgow Intl (GLA)
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  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to United Kingdom?

    Prices for flights from Chicago O'Hare Intl Airport to United Kingdom are updated daily.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to United Kingdom?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to United Kingdom?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chicago O'Hare Intl Airport to United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

    The necessary travel and health documents for your United Kingdom 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 plane model from Chicago O'Hare Intl Airport to United Kingdom?

Best airlines flying from Chicago O'Hare Intl Airport to United Kingdom

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $51Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
SWISSPriceFrom $257Free CancellationRating
7.5
1,686 reviews
Search SWISS flights
DeltaPriceFrom $345Free CancellationRating
8.0
7,981 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $358Free CancellationRating
7.3
1,457 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $430Free CancellationRating
6.8
7,275 reviews
Search Lufthansa flights
IcelandairPriceFrom $470Free CancellationRating
7.0
520 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom $508Free CancellationRating
7.1
1,933 reviews
Search TAP AIR PORTUGAL flights
Aer LingusPriceFrom $531Free CancellationRating
7.1
1,192 reviews
Search Aer Lingus flights
FinnairPriceFrom $568Free CancellationRating
7.6
1,316 reviews
Search Finnair flights
American AirlinesPriceFrom $576Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Why use momondo?

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

Finding the right flight to United Kingdom 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 United Kingdom quick and easy, saving you time and money.

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

Yes. All flights to United Kingdom from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Chicago to United Kingdom?

momondo provides multiple filters to help you find the best flight to United Kingdom from Chicago. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Chicago to United Kingdom flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to the United Kingdom

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
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Flights to Bristolfrom $465
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Flights to Liverpoolfrom $475
Flights to Aberdeenfrom $506
Flights to Leedsfrom $473