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Cheap flights from Chicago to the United Kingdom from $236

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 the United Kingdom departing on 11/9. 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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0 bags

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Cheap round-trip flights

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Icelandair Logo
7:30 pm - 9:55 amORD-GLA
9h 25m1 stop
Icelandair Logo
12:35 pm - 5:20 pmGLA-ORD
10h 45m1 stop
$482Icelandair
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Thu, Oct 30 - Sat, Nov 8
Icelandair Logo
6:30 pm - 9:55 amORD-GLA
9h 25m1 stop
Icelandair Logo
12:35 pm - 5:20 pmGLA-ORD
10h 45m1 stop
$488Icelandair
Find Deal
Mon, Nov 17 - Wed, Dec 3
Icelandair Logo
7:30 pm - 9:55 amORD-GLA
9h 25m1 stop
Icelandair Logo
12:35 pm - 5:20 pmGLA-ORD
10h 45m1 stop
$490Icelandair
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Thu, Oct 30 - Sat, Nov 8
Finnair Logo
6:30 pm - 1:05 pmORD-GLA
12h 35m1 stop
Finnair Logo
7:10 pm - 1:50 pmGLA-ORD
24h 40m1 stop
$618Finnair
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Tue, Nov 18 - Tue, Dec 2
British Airways Logo
9:45 pm - 2:35 pmORD-GLA
10h 50m1 stop
British Airways Logo
7:10 pm - 1:50 pmGLA-ORD
24h 40m1 stop
$619British Airways
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Tue, Nov 18 - Tue, Dec 2
British Airways Logo
9:45 pm - 2:35 pmORD-GLA
10h 50m1 stop
British Airways Logo
7:10 pm - 1:50 pmGLA-ORD
24h 40m1 stop
$620British Airways
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Tue, Nov 18 - Tue, Dec 2
Aer Lingus Logo
3:50 pm - 8:50 amORD-EDI
11h 00m1 stop
Aer Lingus Logo
8:20 am - 5:55 pmEDI-ORD
15h 35m1 stop
$647Aer Lingus
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Tue, Nov 11 - Tue, Nov 18
Aer Lingus Logo
3:50 pm - 7:50 amORD-EDI
10h 00m1 stop
Aer Lingus Logo
8:20 am - 2:00 pmEDI-ORD
11h 40m1 stop
$652Aer Lingus
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Sun, Nov 16 - Wed, Nov 26
United Airlines Logo
9:08 pm - 8:05 amORD-BHX
28h 57m2 stops
United Airlines Logo
1:45 pm - 8:05 pmBHX-ORD
12h 20m1 stop
$672United Airlines
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Sat, Nov 8 - Fri, Nov 21
United Airlines Logo
2:30 pm - 12:35 pmORD-BHX
16h 05m2 stops
United Airlines Logo
1:20 pm - 11:18 amBHX-ORD
51h 58m2 stops
$681United Airlines
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Tue, Nov 25 - Mon, Dec 1

TAP AIR PORTUGAL flights from Chicago to United Kingdom

Our best TAP AIR PORTUGAL deals on Chicago to United Kingdom flight tickets
TAP AIR PORTUGAL
Oct 19
ORD6:00 pmChicago O'Hare Intl
22h 00m
1 stop
LHR10:00 pmLondon Heathrow
Nov 4
LHR6:30 pmLondon Heathrow
26h 30m
1 stop
ORD3:00 pmChicago O'Hare Intl
$557
Find similar
TAP AIR PORTUGAL
Oct 19
ORD6:00 pmChicago O'Hare Intl
12h 45m
1 stop
LHR12:45 pmLondon Heathrow
Nov 4
LHR6:30 pmLondon Heathrow
26h 30m
1 stop
ORD3:00 pmChicago O'Hare Intl
$558
Find similar
TAP AIR PORTUGAL
Oct 26
ORD9:25 pmChicago O'Hare Intl
34h 15m
1 stop
LHR12:40 pmLondon Heathrow
Nov 4
LHR6:30 pmLondon Heathrow
26h 30m
1 stop
ORD3:00 pmChicago O'Hare Intl
$560
Find similar

Delta flights from Chicago to United Kingdom

Our best Delta deals on Chicago to United Kingdom flight tickets
Delta
Oct 15
ORD9:30 amChicago O'Hare Intl
14h 55m
1 stop
LHR6:25 amLondon Heathrow
Oct 22
LHR8:40 amLondon Heathrow
12h 00m
1 stop
ORD2:40 pmChicago O'Hare Intl
$622
Find similar
Delta
Oct 26
MDW6:23 pmChicago Midway
9h 22m
1 stop
LHR8:45 amLondon Heathrow
Nov 4
LHR6:30 amLondon Heathrow
17h 13m
2 stops
MDW5:43 pmChicago Midway
$629
Find similar
Delta
Oct 26
MDW5:04 pmChicago Midway
10h 56m
1 stop
LHR9:00 amLondon Heathrow
Nov 4
LHR6:30 amLondon Heathrow
17h 13m
2 stops
MDW5:43 pmChicago Midway
$630
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago 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 October 9, 2025.
Use the filters below to find and compare flights from Chicago to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoGlasgow

ORD - GLA

ORDGLA

Chicago O'Hare Intl

Thu 10/30

7:30 pm-9:55 am

1 stop9h 25m

Glasgow Intl

Sat 11/8

12:35 pm-5:20 pm

1 stop10h 45m

$482

ChicagoGlasgow

ORD - GLA

ORDGLA

Chicago O'Hare Intl

Mon 11/17

6:30 pm-9:55 am

1 stop9h 25m

Glasgow Intl

Wed 12/3

12:35 pm-5:20 pm

1 stop10h 45m

$488

ChicagoGlasgow

ORD - GLA

ORDGLA

Chicago O'Hare Intl

Thu 10/30

7:30 pm-9:55 am

1 stop9h 25m

Glasgow Intl

Sat 11/8

12:35 pm-5:20 pm

1 stop10h 45m

$490

ChicagoGlasgow

ORD - GLA

ORDGLA

Chicago O'Hare Intl

Tue 11/18

6:30 pm-1:05 pm

1 stop12h 35m

Glasgow Intl

Tue 12/2

7:10 pm-1:50 pm

1 stop24h 40m

$618

ChicagoGlasgow

ORD - GLA

ORDGLA

Chicago O'Hare Intl

Tue 11/18

9:45 pm-2:35 pm

1 stop10h 50m

Glasgow Intl

Tue 12/2

7:10 pm-1:50 pm

1 stop24h 40m

$619

ChicagoGlasgow

ORD - GLA

ORDGLA

Chicago O'Hare Intl

Tue 11/18

9:45 pm-2:35 pm

1 stop10h 50m

Glasgow Intl

Tue 12/2

7:10 pm-1:50 pm

1 stop24h 40m

$620

ChicagoEdinburgh

ORD - EDI

ORDEDI

Chicago O'Hare Intl

Tue 11/11

3:50 pm-8:50 am

1 stop11h 00m

Edinburgh Turnhouse

Tue 11/18

8:20 am-5:55 pm

1 stop15h 35m

$647

ChicagoEdinburgh

ORD - EDI

ORDEDI

Chicago O'Hare Intl

Sun 11/16

3:50 pm-7:50 am

1 stop10h 00m

Edinburgh Turnhouse

Wed 11/26

8:20 am-2:00 pm

1 stop11h 40m

$652

ChicagoBirmingham

ORD - BHX

ORDBHX

Chicago O'Hare Intl

Sat 11/8

9:08 pm-8:05 am

2 stops28h 57m

Birmingham

Fri 11/21

1:45 pm-8:05 pm

1 stop12h 20m

$672

ChicagoBirmingham

ORD - BHX

ORDBHX

Chicago O'Hare Intl

Tue 11/25

2:30 pm-12:35 pm

2 stops16h 05m

Birmingham

Mon 12/1

1:20 pm-11:18 am

2 stops51h 58m

$681

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 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, February is the cheapest month to fly from Chicago to United Kingdom. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $651. If you aren’t able to travel to United Kingdom during the month of February, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $656.

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

The cheapest day to depart from Chicago to United Kingdom is on a Tuesday when prices can be found for as low as $765. The most expensive day to fly to United Kingdom is Saturday, with ticket prices averaging around $911.

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 to United Kingdom in the morning for as low as $666. 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 $829. 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 to United Kingdom flight route?

Fly from Chicago O'Hare Intl to London Heathrow for the best Chicago - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around $796 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 for as low as $696 on momondo.

What cabin class options are available on Chicago to United Kingdom flights?

There are 4 cabin classes available to choose from on Chicago 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 to United Kingdom flights?

You could potentially save up to 47% on your flight if you consider stops on a Chicago to United Kingdom flight.

Cheap Chicago to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to United Kingdom

Best Price Found

$438

Fastest flight time

7h 40m

Direct flights

Every day

Airports in United Kingdom

2 airports
The best one-way flight to United Kingdom from Chicago in the past 72 hours is $438. The best round-trip flight deal from Chicago to United Kingdom found on momondo in the last 72 hours is $646.
The fastest flight from Chicago to United Kingdom takes 7h 40m
Direct flights go from Chicago to United Kingdom every day.
There are 2 airports near United Kingdom: London Heathrow (LHR), Edinburgh Turnhouse (EDI)
Search flight deals

  • When did momondo last update prices for flights from Chicago to United Kingdom?

    Prices for flights from Chicago to United Kingdom are updated daily.

  • How many operators does momondo search for flights from Chicago to United Kingdom?

  • How old do you have to be to fly from Chicago to United Kingdom?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to United Kingdom.

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

    The required travel and health documents for your United Kingdom trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United Kingdom. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Chicago to United Kingdom?

Best airlines flying from Chicago to United Kingdom

Compare and see reviews for airlines that fly from Chicago to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $51Free CancellationRating
7.2
2,908 reviews
Search JetBlue flights
SWISSPriceFrom $257Free CancellationRating
7.6
1,766 reviews
Search SWISS flights
Scandinavian AirlinesPriceFrom $338Free CancellationRating
7.4
1,530 reviews
Search Scandinavian Airlines flights
DeltaPriceFrom $345Free CancellationRating
7.9
7,971 reviews
Search Delta flights
TAP AIR PORTUGALPriceFrom $450Free CancellationRating
7.1
2,005 reviews
Search TAP AIR PORTUGAL flights
LufthansaPriceFrom $460Free CancellationRating
6.8
7,465 reviews
Search Lufthansa flights
IcelandairPriceFrom $473Free CancellationRating
7.0
551 reviews
Search Icelandair flights
British AirwaysPriceFrom $502Free CancellationRating
6.7
7,446 reviews
Search British Airways flights
Aer LingusPriceFrom $503Free CancellationRating
7.2
1,324 reviews
Search Aer Lingus flights
FinnairPriceFrom $544Free CancellationRating
7.6
1,332 reviews
Search Finnair flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to United Kingdom. momondo saves you time and could save you money on your trip.

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

All flight searches from Chicago to United Kingdom on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Chicago to United Kingdom 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 United Kingdom right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Chicago to United Kingdom flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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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
Flights to Londonfrom $315
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Flights to Edinburghfrom $412
Flights to Glasgowfrom $398
Flights to Birminghamfrom $400
Flights to Newcastle upon Tynefrom $492
Flights to Belfastfrom $470
Flights to Bristolfrom $460
Flights to Invernessfrom $423
Flights to Liverpoolfrom $470
Flights to Aberdeenfrom $478
Flights to Leedsfrom $471