Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from London to Illinois from £223

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 9/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from London to Illinois

Cheap return flights

KAYAK's recommended return flight deals from the most popular airlines that fly from London to Illinois.
Icelandair Logo
15:40 - 21:15LGW-ORD
11h 35m1 stop
Icelandair Logo
19:25 - 11:45ORD-LGW
10h 20m1 stop
£363Icelandair
Find Deal
Fri, 22 Aug - Sat, 6 Sep
Icelandair Logo
15:40 - 21:15LGW-ORD
11h 35m1 stop
Icelandair Logo
19:25 - 14:35ORD-LGW
13h 10m1 stop
£366Icelandair
Find Deal
Fri, 22 Aug - Mon, 15 Sep
British Airways Logo
09:50 - 15:45LHR-ORD
11h 55m1 stop
British Airways Logo
17:45 - 07:20ORD-LHR
7h 35mdirect
£399British Airways
Find Deal
Thu, 18 Sep - Wed, 24 Sep
Lufthansa Logo
07:25 - 13:55LHR-ORD
12h 30m1 stop
Lufthansa Logo
14:35 - 09:40ORD-LHR
13h 05m1 stop
£400Lufthansa
Find Deal
Mon, 5 May - Sun, 11 May
British Airways Logo
09:50 - 15:45LHR-ORD
11h 55m1 stop
British Airways Logo
17:45 - 07:20ORD-LHR
7h 35mdirect
£402British Airways
Find Deal
Wed, 17 Sep - Sat, 27 Sep
Lufthansa Logo
08:30 - 14:45LHR-ORD
12h 15m1 stop
Lufthansa Logo
13:29 - 10:40ORD-LHR
15h 11m1 stop
£406Lufthansa
Find Deal
Thu, 8 May - Sun, 11 May
Finnair Logo
09:15 - 11:50LHR-ORD
8h 35mdirect
Finnair Logo
16:56 - 11:05ORD-LHR
12h 09m1 stop
£483Finnair
Find Deal
Tue, 9 Sep - Wed, 17 Sep
Finnair Logo
20:15 - 18:15LHR-ORD
28h 00m2 stops
Finnair Logo
16:56 - 11:05ORD-LHR
12h 09m1 stop
£485Finnair
Find Deal
Fri, 5 Sep - Thu, 18 Sep
Aer Lingus Logo
08:50 - 18:03LHR-STL
15h 13m2 stops
Aer Lingus Logo
06:35 - 10:20STL-LHR
21h 45m2 stops
£950Aer Lingus
Find Deal
Mon, 13 Oct - Sun, 19 Oct
Aer Lingus Logo
13:25 - 23:25LHR-STL
16h 00m2 stops
Aer Lingus Logo
14:40 - 11:10STL-LHR
14h 30m2 stops
£968Aer Lingus
Find Deal
Wed, 15 Oct - Sun, 19 Oct

Lufthansa flights from London to Illinois

Our best Lufthansa deals on London to Illinois flight tickets
Lufthansa
2 May
LHR10:50London Heathrow
13h 25m
1 stop
ORD18:15Chicago O'Hare Intl
5 May
ORD14:35Chicago O'Hare Intl
13h 05m
1 stop
LHR09:40London Heathrow
Lufthansa
5 May
LHR07:25London Heathrow
12h 30m
1 stop
ORD13:55Chicago O'Hare Intl
11 May
ORD14:35Chicago O'Hare Intl
13h 05m
1 stop
LHR09:40London Heathrow
Lufthansa
8 May
LHR08:30London Heathrow
12h 15m
1 stop
ORD14:45Chicago O'Hare Intl
11 May
ORD13:29Chicago O'Hare Intl
15h 11m
1 stop
LHR10:40London Heathrow

SWISS flights from London to Illinois

Our best SWISS deals on London to Illinois flight tickets
SWISS
2 May
LHR06:00London Heathrow
12h 10m
1 stop
ORD12:10Chicago O'Hare Intl
5 May
ORD18:35Chicago O'Hare Intl
12h 25m
1 stop
LHR13:00London Heathrow
SWISS
8 May
LGW18:40London Gatwick
23h 30m
1 stop
ORD12:10Chicago O'Hare Intl
11 May
ORD18:35Chicago O'Hare Intl
17h 15m
1 stop
LGW17:50London Gatwick
SWISS
7 May
LGW18:35London Gatwick
27h 20m
1 stop
ORD15:55Chicago O'Hare Intl
15 May
ORD19:05Chicago O'Hare Intl
16h 45m
1 stop
LGW17:50London Gatwick

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 month of February is, on average, the cheapest month to fly to Illinois from London, with most prices found around £436. If you aren’t able to travel to Illinois during the month of February, then flying in March is also cheap. Prices for this month can be found on momondo for an average of £465.

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

The cheapest day to depart on your flight to Illinois is on a Wednesday when prices can be found for as low as £619. This is often the case because there is less demand to fly during this day of the week. Flights from London to Illinois on a Sunday will generally be more expensive and average around £672. 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 data shows that the cheapest London to Illinois flights are usually those with departure times in the evening. Our users have found flights to Illinois in the evening for as low as £562. In the afternoon is when there is more demand to fly to Illinois, so prices are often more expensive at around £657 per ticket.

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 13 weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around £557 when searching 13 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 £527 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

£223

Fastest flight time

8h 25m

Direct flights

Every day

Airports in Illinois

2 airports
The best one-way flight to Illinois from London in the past 72 hours is £223. The best return flight deal from London to Illinois found on momondo in the last 72 hours is £363.
The fastest flight from London to Illinois takes 8h 25m
Direct flights go from London to Illinois every day.
There are 2 airports near Illinois: Chicago O'Hare Intl (ORD), Lambert-St Louis (STL)

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

    Prices for flights from London to Illinois are refreshed on a daily basis.

  • 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 £315Free CancellationRating
7.0
484 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom £358Free CancellationRating
7.3
1,345 reviews
Search Scandinavian Airlines flights
TAP AIR PORTUGALPriceFrom £371Free CancellationRating
7.1
1,846 reviews
Search TAP AIR PORTUGAL flights
British AirwaysPriceFrom £407Free CancellationRating
6.6
6,806 reviews
Search British Airways flights
Austrian AirlinesPriceFrom £411Free CancellationRating
7.5
780 reviews
Search Austrian Airlines flights
United AirlinesPriceFrom £413Free CancellationRating
7.4
8,685 reviews
Search United Airlines flights
Virgin AtlanticPriceFrom £417Free CancellationRating
7.4
642 reviews
Search Virgin Atlantic flights
LufthansaPriceFrom £418Free CancellationRating
6.7
7,029 reviews
Search Lufthansa flights
Brussels AirlinesPriceFrom £426Free CancellationRating
7.3
345 reviews
Search Brussels Airlines flights
Aer LingusPriceFrom £432Free CancellationRating
7.0
1,068 reviews
Search Aer Lingus flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Illinois for you.

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

All flight searches from London to Illinois on momondo can be filtered to show those which offer flexible booking policies.

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?

Yes. momondo can track prices for London to Illinois 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.


An easier way to manage your Illinois trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
Tue 29/4
Tue 6/5

Find better results for your trip to Illinois

Popular Cities in Illinois

Popular flights according to clicks in the last 7 days on momondo