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Cheap flights from London Heathrow Airport to Illinois from $329

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 Heathrow Airport to Illinois departing on 5/14. 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

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Find the cheapest flights from London Heathrow Airport to Illinois

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from London Heathrow Airport to Illinois.
British Airways Logo
9:50 am - 3:45 pmLHR-ORD
11h 55m1 stop
British Airways Logo
5:45 pm - 7:20 amORD-LHR
7h 35mnonstop
$530British Airways
Find Deal
jue., sep. 18 - mié., sep. 24
Lufthansa Logo
7:25 am - 1:55 pmLHR-ORD
12h 30m1 stop
Lufthansa Logo
2:35 pm - 9:40 amORD-LHR
13h 05m1 stop
$532Lufthansa
Find Deal
lun., may. 5 - dom., may. 11
United Airlines Logo
8:45 am - 3:55 pmLHR-ORD
13h 10m1 stop
United Airlines Logo
6:34 pm - 11:25 amORD-LHR
10h 51m1 stop
$550United Airlines
Find Deal
sáb., may. 10 - sáb., may. 17
United Airlines Logo
8:40 am - 3:55 pmLHR-ORD
13h 15m1 stop
United Airlines Logo
5:55 pm - 6:55 amORD-LHR
31h 00m1 stop
$558United Airlines
Find Deal
mié., may. 14 - mié., may. 21
American Airlines Logo
12:15 pm - 2:40 pmLHR-ORD
8h 25mnonstop
American Airlines Logo
8:30 pm - 10:30 amORD-LHR
8h 00mnonstop
$589American Airlines
Find Deal
mar., may. 6 - mié., may. 14
American Airlines Logo
2:40 pm - 9:25 pmLHR-ORD
12h 45m1 stop
American Airlines Logo
5:45 pm - 10:50 amORD-LHR
11h 05m1 stop
$591American Airlines
Find Deal
sáb., sep. 6 - dom., sep. 28
Iberia Logo
6:10 am - 2:15 pmLHR-ORD
14h 05m1 stop
Iberia Logo
5:45 pm - 7:20 amORD-LHR
7h 35mnonstop
$626Iberia
Find Deal
dom., sep. 7 - dom., sep. 21
Iberia Logo
5:10 pm - 1:30 pmLHR-ORD
26h 20m1 stop
Iberia Logo
8:40 pm - 10:30 amORD-LHR
7h 50mnonstop
$632Iberia
Find Deal
mié., sep. 10 - vie., sep. 19
Aer Lingus Logo
8:50 am - 6:03 pmLHR-STL
15h 13m2 stops
Aer Lingus Logo
6:35 am - 10:20 amSTL-LHR
21h 45m2 stops
$1,263Aer Lingus
Find Deal
lun., oct. 13 - dom., oct. 19
Aer Lingus Logo
1:25 pm - 11:25 pmLHR-STL
16h 00m2 stops
Aer Lingus Logo
2:40 pm - 11:10 amSTL-LHR
14h 30m2 stops
$1,286Aer Lingus
Find Deal
mié., oct. 15 - dom., oct. 19

Lufthansa flights from London Heathrow Airport to Illinois

Our best Lufthansa deals on London Heathrow Airport to Illinois flight tickets
Lufthansa
May 2
LHR6:55 amLondon Heathrow
13h 00m
1 stop
ORD1:55 pmChicago O'Hare Intl
May 4
ORD6:05 pmChicago O'Hare Intl
8h 15m
LHR8:20 amLondon Heathrow
Lufthansa
May 5
LHR7:25 amLondon Heathrow
12h 30m
1 stop
ORD1:55 pmChicago O'Hare Intl
May 11
ORD2:35 pmChicago O'Hare Intl
13h 05m
1 stop
LHR9:40 amLondon Heathrow
Lufthansa
May 5
LHR6:50 amLondon Heathrow
11h 10m
1 stop
ORD12:00 pmChicago O'Hare Intl
May 12
ORD1:29 pmChicago O'Hare Intl
11h 26m
1 stop
LHR6:55 amLondon Heathrow

SWISS flights from London Heathrow Airport to Illinois

Our best SWISS deals on London Heathrow Airport to Illinois flight tickets
SWISS
May 1
LHR8:40 amLondon Heathrow
13h 15m
1 stop
ORD3:55 pmChicago O'Hare Intl
May 5
ORD6:35 pmChicago O'Hare Intl
12h 25m
1 stop
LHR1:00 pmLondon Heathrow
SWISS
Apr 30
LHR8:40 amLondon Heathrow
13h 15m
1 stop
ORD3:55 pmChicago O'Hare Intl
May 5
ORD6:35 pmChicago O'Hare Intl
12h 25m
1 stop
LHR1:00 pmLondon Heathrow
SWISS
May 1
LHR8:40 amLondon Heathrow
13h 15m
1 stop
ORD3:55 pmChicago O'Hare Intl
May 15
ORD7:05 pmChicago O'Hare Intl
16h 45m
1 stop
LHR5:50 pmLondon Heathrow

See travel insights to Illinois from

How to get the cheapest flight ticket from London Heathrow Airport 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 Heathrow Airport is in February. Flight prices, which tend to average around $599, 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 March is also cheap. Prices for this month can be found on momondo for an average of $609.

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

The cheapest day to depart from London Heathrow Airport to Illinois is on a Wednesday when prices can be found for as low as $812. Flights from London Heathrow Airport 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 Heathrow Airport 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 Heathrow to Illinois flight route?

Fly from London Heathrow to Chicago O'Hare Intl for the best London Heathrow - 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 Heathrow Airport when booking 13 weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $740 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 Heathrow Airport for as low as $701 on momondo.

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

There are 4 cabin classes available to choose from on London Heathrow 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 Heathrow Airport to Illinois flight deals and tips

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

Best Price Found

$329

Fastest flight time

8h 25m

Direct flights

Every day

Airports in Illinois

3 airports
The best one-way flight to Illinois from London Heathrow Airport in the past 72 hours is $329. The best round-trip flight deal from London Heathrow Airport to Illinois found on momondo in the last 72 hours is $530.
The fastest flight from London Heathrow Airport to Illinois takes 8h 25m
Direct flights go from London Heathrow Airport 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 Heathrow Airport to Illinois?

    Prices for flights from London Heathrow Airport to Illinois refresh daily.

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

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

    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 London Heathrow Airport 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 Heathrow Airport to Illinois?


Best airlines flying from London Heathrow Airport to Illinois

Compare and see reviews for airlines that fly from London Heathrow Airport to Illinois with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $451Free CancellationRating
7.0
484 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $462Free CancellationRating
7.3
1,345 reviews
Search Scandinavian Airlines flights
TAP AIR PORTUGALPriceFrom $483Free CancellationRating
7.1
1,846 reviews
Search TAP AIR PORTUGAL flights
British AirwaysPriceFrom $551Free CancellationRating
6.6
6,815 reviews
Search British Airways flights
United AirlinesPriceFrom $562Free CancellationRating
7.4
8,685 reviews
Search United Airlines flights
Aer LingusPriceFrom $574Free CancellationRating
7.0
1,068 reviews
Search Aer Lingus flights
IberiaPriceFrom $582Free CancellationRating
7.0
2,686 reviews
Search Iberia flights
American AirlinesPriceFrom $583Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
FinnairPriceFrom $613Free CancellationRating
7.6
1,272 reviews
Search Finnair flights
LufthansaPriceFrom $660Free CancellationRating
6.7
7,030 reviews
Search Lufthansa flights

Why use momondo?

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

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

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

Yes. momondo allows you to filter the results for London to Illinois flights to just show those with flexible booking policies.

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

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

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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