Cheap flights from London Heathrow Airport to Illinois from £215
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
How far in advance should I book a flight from London Heathrow Airport to Illinois?
To save up to 14% on this flight, we recommend booking at least 50 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from London Heathrow Airport to Illinois from £538 1-2 weeks out and tickets from £579 for flights departing within the next 72 hours.
What is the cheapest month to fly from London Heathrow Airport to Illinois?
February can be a great time to fly to Illinois from London Heathrow Airport with a flight ticket averaging about £525. Cheapflights users have found deals in the month of February for as cheap as £306. The most expensive prices can be found in the month of July.
When is the cheapest time to fly from London Heathrow Airport to Illinois (LHR - IL)?
When flying from London Heathrow Airport to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Cheap Finnair flights from Heathrow to Illinois
Explore cheap flight options specifically provided by Finnair for the route between Heathrow and Illinois. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 892,239 searches. Data last updated 5 May 2024.
Check out some of the cheapest Finnair flights we've come across from London to Illinois. Make sure to double check the flight details before booking.
Cheap British Airways flights from Heathrow to Illinois
Explore cheap flight options specifically provided by British Airways for the route between Heathrow and Illinois. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 892,239 searches. Data last updated 5 May 2024.
Some of the best deals we've found on British Airways flights travelling from London to Illinois. Ensure the flight price, dates, time, and airline match your criteria before you book.
Cheap Heathrow to Illinois flights in May & June 2024
Find cheap flight options from Heathrow to Illinois specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 892,239 searches. Prices were last updated on 5 May 2024.
Listed are some of the best fares we've found on flights departing from London to Illinois in 2024. Check back in a little while for more flight options.
Heathrow to Illinois 2024 flight deals
Discover exclusive flight deals for travel between Heathrow and Illinois in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 892,239 searches. Data last updated 5 May 2024.
Listed are some of the best fares we've found on flights departing from London to Illinois in 2024. Check back in a little while for more flight options.
Direct flights to Illinois from Heathrow
Discover direct flight options from Heathrow to Illinois. Find direct flights with no stopovers, providing a convenient travel experience. Explore direct flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 892,239 searches. Data last updated 5 May 2024.
If you're seeking options on non-stop flights from London to Illinois, check out these fares. Search for alternative flights from London to Illinois by utilising the search form above.
Heathrow to Illinois flights leaving soon
Find last-minute flight options from Heathrow to Illinois for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 892,239 searches. Data last updated 5 May 2024.
Consider one of these great deals we found on last-minute flights from London to Illinois. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
One-way flights to Illinois from Heathrow
Search for one-way flight options from Heathrow to Illinois. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 892,239 searches. Data last updated 5 May 2024.
Users in need of a one-way flight from London to Illinois can choose from these deals. Users can also find round-trip London to Illinois flights by using the search form above.
Find flights from Heathrow to Illinois within your budget
Customise your flight search to find flights from Heathrow to Illinois 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, Cheapflights users made 892,239 searches. Data last updated 5 May 2024.
Fly from
Fly to
Budget
£396 - £441
Route
Depart
Return
Price
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Mon 28/10
1 stop12h 45m
Chicago O'Hare Intl
Mon 4/11
1 stop14h 10m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Tue 17/9
1 stop14h 05m
Chicago O'Hare Intl
Mon 23/9
1 stop13h 20m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Wed 25/9
Nonstop8h 40m
Chicago O'Hare Intl
Wed 9/10
Nonstop7h 50m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Mon 28/10
1 stop11h 50m
Chicago O'Hare Intl
Thu 7/11
1 stop11h 15m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Fri 13/9
1 stop14h 00m
Chicago O'Hare Intl
Sun 15/9
1 stop12h 45m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Wed 18/9
1 stop14h 05m
Chicago O'Hare Intl
Wed 25/9
Nonstop7h 50m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Wed 18/9
1 stop14h 05m
Chicago O'Hare Intl
Wed 25/9
Nonstop7h 50m
London HeathrowChicago Midway
LHR - MDW
LHRMDW
London Heathrow
Mon 28/10
2 stops15h 33m
Chicago Midway
Mon 4/11
1 stop15h 04m
London HeathrowChicago O'Hare Intl
LHR - ORD
LHRORD
London Heathrow
Mon 9/9
Nonstop8h 55m
Chicago O'Hare Intl
Thu 3/10
Nonstop8h 05m
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated 5 May 2024.
Read reviews from past customers who have flown Finnair, British Airways and Virgin Atlantic from London to Illinois. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Boarding
Entertainment
Crew
Overall
Comfort
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Food
Boarding
Entertainment
Crew
Overall
Comfort
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Food
Boarding
Entertainment
Crew
Overall
Comfort
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Food
Boarding
Entertainment
Crew
Overall
Comfort
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Food
Boarding
Entertainment
Crew
Overall
Comfort
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Food
Boarding
Entertainment
Crew
Overall
Comfort
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Related info for your journey
Find useful and relevant information for your journey from Heathrow to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Heathrow to IllinoisSee prices for flight routes from nearby airports that may be better suited for you.
See prices for flight routes from nearby airports that may be better suited for you.
Top 10 airlines flying from Heathrow to Illinois
Discover the top 10 airlines that operate flights from Heathrow to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 892,239 searches. Data last updated 5 May 2024.
Search flights from Heathrow to Illinois by cabin class
Find flights from Heathrow to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Hourly flight availability from Heathrow to Illinois
Find hourly flight availability from Heathrow to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 5 May 2024.
| 0%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 61%of flight departures | Morning6 am to noon |
| 39%of flight departures | AfternoonNoon to 6 pm |
| 0%of flight departures | Evening6 pm to midnight |
Book a flight to one of these trending destinations
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How does Cheapflights help users find flights from Heathrow to Illinois?
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Why should you use Cheapflights to find cheap flight tickets from Heathrow to Illinois?
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Heathrow to Illinois for you. Better yet — we are completely free to use.
Can Cheapflights find flights from Heathrow to Illinois with no change fees?
Yes! Cheapflights helps users easily find flights from Heathrow to Illinois with no change fees.
Can Cheapflights notify me if prices for flights from Heathrow to Illinois become cheaper?
Of course! You can now track prices for flights from Heathrow to Illinois and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.