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Cheap flights from London to Illinois from $253

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Illinois departing on 4/29. 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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Find the cheapest flights from London to Illinois

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from London to Illinois.
Icelandair Logo
3:40 pm - 9:15 pmLGW-ORD
11h 35m1 stop
Icelandair Logo
7:25 pm - 2:40 pmORD-LGW
13h 15m1 stop
$433Icelandair
Find Deal
Thu, Sep 18 - Tue, Sep 23
Icelandair Logo
3:40 pm - 9:15 pmLGW-ORD
11h 35m1 stop
Icelandair Logo
10:15 pm - 2:40 pmORD-LGW
10h 25m1 stop
$435Icelandair
Find Deal
Fri, Aug 22 - Fri, Sep 5
British Airways Logo
9:50 am - 3:45 pmLHR-ORD
11h 55m1 stop
British Airways Logo
7:10 pm - 9:05 amORD-LHR
7h 55mnonstop
$518British Airways
Find Deal
Thu, Sep 18 - Tue, Sep 23
British Airways Logo
7:40 am - 2:00 pmLHR-ORD
12h 20m1 stop
British Airways Logo
10:25 pm - 12:15 pmORD-LHR
7h 50mnonstop
$534British Airways
Find Deal
Fri, May 2 - Sun, May 11
United Airlines Logo
8:40 am - 3:55 pmLHR-ORD
13h 15m1 stop
United Airlines Logo
2:00 pm - 10:00 amORD-LHR
14h 00m2 stops
$537United Airlines
Find Deal
Thu, Apr 24 - Wed, Apr 30
United Airlines Logo
8:30 am - 2:45 pmLHR-ORD
12h 15m1 stop
United Airlines Logo
8:40 am - 6:30 amORD-LHR
15h 50m1 stop
$542United Airlines
Find Deal
Sat, Apr 19 - Fri, May 2
American Airlines Logo
12:20 pm - 11:57 pmLGW-ORD
17h 37m2 stops
American Airlines Logo
1:29 pm - 8:10 amORD-LGW
12h 41m2 stops
$575American Airlines
Find Deal
Thu, Sep 18 - Thu, Sep 25
American Airlines Logo
9:15 am - 11:45 amLHR-ORD
8h 30mnonstop
American Airlines Logo
11:50 am - 6:15 amORD-LHR
12h 25m1 stop
$632American Airlines
Find Deal
Wed, Apr 16 - Wed, May 14
Aer Lingus Logo
6:45 am - 2:00 pmLCY-ORD
13h 15m1 stop
Aer Lingus Logo
3:45 pm - 8:30 amORD-LCY
10h 45m1 stop
$917Aer Lingus
Find Deal
Thu, Apr 24 - Wed, Apr 30
Aer Lingus Logo
5:10 pm - 7:00 pmLCY-ORD
31h 50m1 stop
Aer Lingus Logo
3:45 pm - 11:35 amORD-LCY
13h 50m1 stop
$957Aer Lingus
Find Deal
Sun, Apr 20 - Fri, May 9

Icelandair flights from London to Illinois

Our best Icelandair deals on London to Illinois flight tickets
Icelandair
Sep 18
LGW3:40 pmLondon Gatwick
11h 35m
1 stop
ORD9:15 pmChicago O'Hare Intl
Sep 23
ORD7:25 pmChicago O'Hare Intl
13h 15m
1 stop
LGW2:40 pmLondon Gatwick
Icelandair
Aug 22
LGW3:40 pmLondon Gatwick
11h 35m
1 stop
ORD9:15 pmChicago O'Hare Intl
Sep 5
ORD10:15 pmChicago O'Hare Intl
10h 25m
1 stop
LGW2:40 pmLondon Gatwick
Icelandair
Sep 11
LGW3:40 pmLondon Gatwick
11h 35m
1 stop
ORD9:15 pmChicago O'Hare Intl
Sep 20
ORD7:25 pmChicago O'Hare Intl
13h 15m
1 stop
LGW2:40 pmLondon Gatwick

British Airways flights from London to Illinois

Our best British Airways deals on London to Illinois flight tickets
British Airways
Sep 18
LHR9:50 amLondon Heathrow
11h 55m
1 stop
ORD3:45 pmChicago O'Hare Intl
Sep 23
ORD7:10 pmChicago O'Hare Intl
7h 55m
LHR9:05 amLondon Heathrow
British Airways
May 2
LHR7:40 amLondon Heathrow
12h 20m
1 stop
ORD2:00 pmChicago O'Hare Intl
May 11
ORD10:25 pmChicago O'Hare Intl
7h 50m
LHR12:15 pmLondon Heathrow
British Airways
May 2
LHR9:15 amLondon Heathrow
8h 30m
ORD11:45 amChicago O'Hare Intl
May 11
ORD10:25 pmChicago O'Hare Intl
7h 50m
LHR12:15 pmLondon Heathrow

See travel insights to Illinois from

How to get the cheapest flight ticket from London to Illinois

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 Illinois?

The cheapest month to fly to Illinois from London is in February. Flight prices, which tend to average around $580, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $633.

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

The cheapest day to depart from London to Illinois is on a Wednesday when prices can be found for as low as $812. Flights from London to Illinois on a Sunday will generally be more expensive and average around $952. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from London to Illinois during this time can be as low as $620. Flights in the afternoon are often more expensive with an average ticket price of $956.

What is the cheapest London to Illinois flight route?

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

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

You are more likely to see cheaper flights to Illinois from London when booking 14 weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $740 when searching 14 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from London for as low as $721 on momondo.

What cabin class options are available on London to Illinois flights?

There are 4 cabin classes available to choose from on London to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap London to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Illinois

Best Price Found

$253

Fastest flight time

8h 25m

Direct flights

Every day

Airports in Illinois

3 airports
The best one-way flight to Illinois from London in the past 72 hours is $253. The best round-trip flight deal from London to Illinois found on momondo in the last 72 hours is $433.
The fastest flight from London to Illinois takes 8h 25m
Direct flights go from London to Illinois every day.
There are 3 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL)

  • When did momondo last update prices for flights from London to Illinois?

    Prices for flights from London to Illinois refresh daily.

  • How many operators does momondo search for flights from London to Illinois?

  • How old do you have to be to fly from London to Illinois?

    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 from London to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The required travel and health documents for your Illinois 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 Illinois. 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 London to Illinois?


Best airlines flying from London to Illinois

Compare and see reviews for airlines that fly from London to Illinois with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $451Free CancellationRating
7.0
476 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom $483Free CancellationRating
7.1
1,834 reviews
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesPriceFrom $492Free CancellationRating
7.3
1,328 reviews
Search Scandinavian Airlines flights
British AirwaysPriceFrom $559Free CancellationRating
6.6
6,718 reviews
Search British Airways flights
United AirlinesPriceFrom $562Free CancellationRating
7.4
8,618 reviews
Search United Airlines flights
Aer LingusPriceFrom $574Free CancellationRating
7.0
1,059 reviews
Search Aer Lingus flights
IberiaPriceFrom $582Free CancellationRating
7.0
2,660 reviews
Search Iberia flights
American AirlinesPriceFrom $588Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
FinnairPriceFrom $613Free CancellationRating
7.6
1,267 reviews
Search Finnair flights
LufthansaPriceFrom $660Free CancellationRating
6.7
6,968 reviews
Search Lufthansa flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Illinois?

It is quick and easy to find London to Illinois flights 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 Illinois that suits you.

Can I find flights from London to Illinois with flexible booking policies on momondo?

Flights from London to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to Illinois?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from London.

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

Of course. momondo tracks the price of London to Illinois 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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