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Cheap flights from Illinois to Heathrow (LHR) from $229

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 10/6. 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.
ORD — LHR
Apr 29 — May 61
From?
To?
Mon 4/29
Mon 5/6
1 adult, Economy
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How far in advance should I book a flight from Illinois to London Heathrow Airport?

Users have found that booking a flight from Illinois to London Heathrow Airport at least 11 days early can save you up to 12% on average compared to booking a flight this week. If booking 11 days before your flight isn’t an option for you, users have found flights from Illinois to London Heathrow Airport for as little as $565 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $641 for flights departing within the next 3 days.

What is the cheapest month to fly from Illinois to London Heathrow Airport?

Flights from Illinois to London Heathrow Airport lean towards being more expensive in June. Prices are generally better when you fly from Illinois to London Heathrow Airport in February, with the cheapest ticket starting at $409.

When is the cheapest time to fly from Illinois to London Heathrow Airport (IL - LHR)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to London Heathrow Airport as you normally would.

Cheap Delta flights from Illinois to Heathrow

Explore cheap flight options specifically provided by Delta for the route between Illinois and Heathrow. 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 3,086,534 searches. Data last updated April 24, 2024.
Consider these cheap Delta flights we've found departing from Illinois to London. Make sure to check back often as deals are often changing.
Mon 9/302:00 pmORD - LHR
1 stop11h 15mDelta
Tue 10/229:00 amLHR - ORD
1 stop12h 00mDelta
Deal found 4/23$583
Wed 4/249:30 amMDW - LHR
1 stop15h 15mDelta
Wed 5/16:15 amLHR - MDW
2 stops16h 09mDelta
Deal found 4/23$593
Wed 5/17:05 amORD - LHR
1 stop17h 40mDelta
Fri 5/106:30 amLHR - ORD
2 stops16h 03mDelta
Deal found 4/24$596
Sun 4/2810:00 amMDW - LHR
1 stop14h 25mDelta
Tue 5/78:40 amLHR - MDW
2 stops15h 27mDelta
Deal found 4/23$597
Tue 9/241:05 pmMDW - LHR
1 stop11h 20mDelta
Fri 10/41:55 pmLHR - MDW
1 stop13h 49mDelta
Deal found 4/23$600
Wed 5/11:25 pmMDW - LHR
1 stop11h 20mDelta
Fri 5/101:55 pmLHR - MDW
1 stop14h 06mDelta
Deal found 4/23$601
Tue 4/3012:15 pmORD - LHR
1 stop13h 00mDelta
Tue 6/46:15 amLHR - ORD
2 stops16h 18mDelta
Deal found 4/23$628
Wed 5/110:55 amORD - LHR
1 stop16h 30mDelta
Thu 5/309:55 amLHR - ORD
2 stops14h 22mDelta
Deal found 4/23$631
Mon 5/612:45 pmMDW - LHR
1 stop11h 40mDelta
Tue 5/148:40 amLHR - MDW
2 stops15h 27mDelta
Deal found 4/23$632

Cheap SWISS flights from Illinois to Heathrow

Explore cheap flight options specifically provided by SWISS for the route between Illinois and Heathrow. 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 3,086,534 searches. Data last updated April 24, 2024.
Have a look at some of the cheapest available SWISS flights departing from Illinois and landing in London. Ensure the flight price, dates, time, and airline match your criteria before you book.
Tue 5/77:15 pmORD - LHR
1 stop11h 45mSWISS
Wed 5/158:40 amLHR - ORD
1 stop13h 25mSWISS
Deal found 4/23$617
Sun 5/57:15 pmORD - LHR
1 stop30h 40mSWISS
Fri 5/176:00 amLHR - ORD
1 stop12h 10mSWISS
Deal found 4/23$646
Wed 5/17:15 pmORD - LHR
1 stop11h 45mSWISS
Sun 5/126:00 amLHR - ORD
1 stop16h 05mSWISS
Deal found 4/23$684
Thu 5/27:15 pmORD - LHR
1 stop15h 05mSWISS
Mon 5/68:05 pmLHR - ORD
1 stop26h 00mSWISS
Deal found 4/23$692

Cheap Illinois to Heathrow flights in April & May 2024

Find cheap flight options from Illinois to Heathrow specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,086,534 searches. Prices were last updated on April 24, 2024.
These are some of the most attractive deals on flights from Illinois to London in 2024. Check back in a little while for more flight options.
Sat 4/277:45 pmORD - LHR
2 stops16h 45mScandinavian Airlines
Mon 4/296:40 amLHR - ORD
1 stop17h 15mScandinavian Airlines
Deal found 4/23$560
Wed 4/246:05 pmORD - LHR
Nonstop7h 45mAmerican Airlines
Wed 5/86:10 amLHR - ORD
1 stop13h 35mAmerican Airlines
Deal found 4/23$564
Tue 4/2310:35 pmORD - LHR
Nonstop7h 40mAmerican Airlines
Wed 5/86:10 amLHR - ORD
1 stop13h 35mAmerican Airlines
Deal found 4/23$566
Wed 4/243:20 pmORD - LHR
1 stop11h 45mAmerican Airlines
Wed 5/86:10 amLHR - ORD
1 stop13h 35mAmerican Airlines
Deal found 4/23$567
Tue 4/236:25 pmORD - LHR
1 stop11h 45mAmerican Airlines
Wed 5/86:10 amLHR - ORD
1 stop13h 35mAmerican Airlines
Deal found 4/23$569
Wed 4/242:15 pmORD - LHR
1 stop11h 50mVirgin Atlantic
Wed 5/16:15 amLHR - ORD
1 stop14h 45mVirgin Atlantic
Deal found 4/23$571
Wed 4/246:00 pmORD - LHR
1 stop17h 45mTAP AIR PORTUGAL
Tue 5/76:45 pmLHR - ORD
1 stop27h 25mTAP AIR PORTUGAL
Deal found 4/23$574
Tue 4/236:40 pmORD - LHR
1 stop11h 35mDelta
Fri 5/106:15 amLHR - ORD
1 stop14h 45mDelta
Deal found 4/23$577
Tue 4/236:40 pmORD - LHR
1 stop11h 35mDelta
Wed 5/86:30 amLHR - ORD
1 stop14h 15mDelta
Deal found 4/23$580

Illinois to Heathrow 2024 flight deals

Discover exclusive flight deals for travel between Illinois and Heathrow in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,086,534 searches. Data last updated April 24, 2024.
These are some of the most attractive deals on flights from Illinois to London in 2024. Check back in a little while for more flight options.
Sun 11/107:55 pmORD - LHR
1 stop17h 35mScandinavian Airlines
Tue 11/197:30 pmLHR - ORD
2 stops28h 35mScandinavian Airlines
Deal found 4/23$516
Wed 11/137:55 pmORD - LHR
1 stop14h 05mScandinavian Airlines
Wed 11/209:55 amLHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 4/22$518
Mon 10/77:45 pmORD - LHR
1 stop14h 15mScandinavian Airlines
Wed 10/239:55 amLHR - ORD
1 stop14h 00mScandinavian Airlines
Deal found 4/23$539
Sun 12/297:55 pmORD - LHR
1 stop14h 05mScandinavian Airlines
Fri 1/106:40 amLHR - ORD
1 stop17h 25mScandinavian Airlines
Deal found 4/23$543
Wed 11/67:55 pmORD - LHR
1 stop15h 45mScandinavian Airlines
Tue 11/125:00 pmLHR - ORD
1 stop31h 05mScandinavian Airlines
Deal found 4/23$544
Tue 11/57:55 pmORD - LHR
1 stop19h 45mScandinavian Airlines
Tue 11/128:30 pmLHR - ORD
1 stop27h 35mScandinavian Airlines
Deal found 4/23$548
Sun 9/226:00 pmORD - LHR
1 stop22h 00mTAP AIR PORTUGAL
Wed 10/236:00 amLHR - ORD
1 stop16h 10mTAP AIR PORTUGAL
Deal found 4/23$550
Wed 11/67:55 pmORD - LHR
1 stop15h 45mScandinavian Airlines
Wed 11/209:55 amLHR - ORD
1 stop14h 10mScandinavian Airlines
Deal found 4/23$551
Wed 11/67:55 pmORD - LHR
2 stops16h 35mScandinavian Airlines
Tue 11/127:05 amLHR - ORD
2 stops17h 00mScandinavian Airlines
Deal found 4/23$552

Non-stop flights to Heathrow from Illinois

Discover non-stop flight options from Illinois to Heathrow. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 3,086,534 searches. Data last updated April 24, 2024.
Take a look at some of the direct flights traveling from Illinois to London in the near future. Select from other flights from Illinois to London by using the search form above.
Tue 9/2410:25 pmORD - LHR
Nonstop7h 50mFinnair
Fri 10/410:05 amLHR - ORD
Nonstop9h 00mFinnair
Deal found 4/23$585
Tue 10/18:20 amORD - LHR
Nonstop7h 50mBritish Airways
Wed 10/238:10 amLHR - ORD
Nonstop8h 35mBritish Airways
Deal found 4/23$613
Mon 5/137:10 pmORD - LHR
Nonstop7h 50mBritish Airways
Wed 11/2711:00 amLHR - ORD
Nonstop8h 55mBritish Airways
Deal found 4/23$615
Sun 5/1211:00 pmORD - LHR
Nonstop7h 45mBritish Airways
Thu 11/211:10 pmLHR - ORD
Nonstop8h 55mBritish Airways
Deal found 4/23$616
Tue 8/67:15 pmORD - LHR
Nonstop7h 50mBritish Airways
Wed 8/281:10 pmLHR - ORD
Nonstop8h 40mBritish Airways
Deal found 4/22$618
Wed 9/46:00 pmORD - LHR
Nonstop7h 50mFinnair
Tue 9/172:25 pmLHR - ORD
Nonstop8h 35mFinnair
Deal found 4/23$620
Wed 5/1511:00 pmORD - LHR
Nonstop7h 45mFinnair
Wed 5/228:10 amLHR - ORD
Nonstop8h 35mFinnair
Deal found 4/22$621
Sun 9/293:50 pmORD - LHR
Nonstop8h 05mUnited Airlines
Tue 10/228:30 amLHR - ORD
Nonstop8h 55mUnited Airlines
Deal found 4/23$632
Sat 5/48:20 amORD - LHR
Nonstop7h 50mFinnair
Tue 5/72:45 pmLHR - ORD
Nonstop8h 35mFinnair
Deal found 4/23$635

Illinois to Heathrow flights leaving soon

Find last-minute flight options from Illinois to Heathrow 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 3,086,534 searches. Data last updated April 24, 2024.
Consider one of these great deals we found on last-minute flights from Illinois to London. Tip: verify your flight details before completing your reservation.
Wed 5/110:35 pmORD - LHR
Nonstop7h 40mAmerican Airlines
Wed 5/86:10 amLHR - ORD
1 stop13h 35mAmerican Airlines
Deal found 4/23$566
Wed 5/13:20 pmORD - LHR
1 stop11h 45mAmerican Airlines
Wed 5/86:10 amLHR - ORD
1 stop13h 35mAmerican Airlines
Deal found 4/23$569
Tue 4/308:35 pmORD - LHR
Nonstop7h 45mBritish Airways
Tue 5/78:10 amLHR - ORD
Nonstop8h 35mBritish Airways
Deal found 4/23$581
Wed 5/12:15 pmORD - LHR
1 stop14h 55mDelta
Fri 5/106:15 amLHR - ORD
1 stop14h 45mDelta
Deal found 4/24$583
Wed 5/17:45 pmORD - LHR
1 stop17h 45mScandinavian Airlines
Tue 5/77:05 amLHR - ORD
2 stops16h 50mScandinavian Airlines
Deal found 4/23$584
Wed 5/110:35 pmORD - LHR
Nonstop7h 40mBritish Airways
Fri 5/102:45 pmLHR - ORD
Nonstop8h 35mBritish Airways
Deal found 4/23$585
Wed 4/2412:45 pmMDW - LHR
1 stop13h 05mVirgin Atlantic
Wed 5/19:20 amLHR - MDW
1 stop14h 00mVirgin Atlantic
Deal found 4/23$587
Tue 4/301:20 pmORD - LHR
1 stop12h 10mAmerican Airlines
Thu 5/1611:05 amLHR - ORD
Nonstop8h 40mAmerican Airlines
Deal found 4/23$588
Wed 5/110:35 pmORD - LHR
Nonstop7h 40mBritish Airways
Mon 5/68:35 pmLHR - ORD
1 stop26h 10mBritish Airways
Deal found 4/23$590

One-way flights to Heathrow from Illinois

Search for one-way flight options from Illinois to Heathrow. 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 3,086,534 searches. Data last updated April 24, 2024.
Users in need of a one-way flight from Illinois to London can choose from these deals. Users in need of a round-trip flight from Illinois to London instead should update the search form at the top of page.
Sun 10/67:30 pmORD - LHR
1 stop18h 50mIcelandair
Deal found 4/23$229
Tue 10/87:30 pmORD - LHR
1 stop18h 50mIcelandair
Deal found 4/23$237
Sun 9/227:30 pmORD - LHR
1 stop18h 50mIcelandair
Deal found 4/22$243
Mon 9/237:30 pmORD - LHR
1 stop18h 50mIcelandair
Deal found 4/23$255
Tue 9/2410:15 pmORD - LHR
1 stop16h 05mIcelandair
Deal found 4/23$262
Mon 7/810:15 pmORD - LHR
1 stop16h 05mIcelandair
Deal found 4/23$288
Mon 7/2210:15 pmORD - LHR
1 stop16h 05mIcelandair
Deal found 4/23$291
Wed 8/77:25 pmORD - LHR
1 stop18h 55mIcelandair
Deal found 4/23$301
Mon 7/810:15 pmORD - LHR
1 stop16h 05mIcelandair
Deal found 4/23$309

Find flights from Illinois to Heathrow within your budget

Customize your flight search to find flights from Illinois to Heathrow 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 3,086,534 searches. Data last updated April 24, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$539 - $599

Route

Depart

Return

Price

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 10/7

1 stop14h 15m

London Heathrow

Wed 10/23

1 stop14h 00m

$539

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 9/22

1 stop22h 00m

London Heathrow

Wed 10/23

1 stop16h 10m

$550

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 10/1

1 stop18h 55m

London Heathrow

Tue 10/15

1 stop11h 15m

$558

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 10/1

Nonstop7h 50m

London Heathrow

Tue 10/15

1 stop13h 35m

$566

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 9/23

Nonstop7h 50m

London Heathrow

Mon 9/30

1 stop22h 30m

$567

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 10/20

Nonstop7h 50m

London Heathrow

Wed 10/30

1 stop14h 05m

$568

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 9/30

1 stop11h 15m

London Heathrow

Tue 10/22

1 stop12h 00m

$583

Chicago O'Hare IntlLondon Heathrow

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 10/1

Nonstop7h 55m

London Heathrow

Tue 10/15

Nonstop8h 35m

$585

Chicago MidwayLondon Heathrow

MDW - LHR

MDWLHR

Chicago Midway

Sun 9/29

1 stop13h 25m

London Heathrow

Wed 10/9

1 stop16h 09m

$599

Flights are sorted by cheapest first

Deals found on 4/23

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated April 24, 2024.
To help decide which airline to fly from Illinois to London, see what other customers have to say about Delta, SWISS and Air Canada. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very good
11,004 reviews
Check prices

Food

7.5

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Delta
8.1
Very good
11,004 reviews
Delta
8.1
Very good
11,004 reviews
Check prices

Food

7.5

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

KLM
7.9
Good
1,629 reviews
Delta
8.1
Very good
11,004 reviews
Check prices

Food

7.5

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

SWISS
7.8
Good
2,070 reviews
Delta
8.1
Very good
11,004 reviews
Check prices

Food

7.5

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Finnair
7.8
Good
1,385 reviews
Delta
8.1
Very good
11,004 reviews
Check prices

Food

7.5

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Virgin Atlantic
7.7
Good
751 reviews
Delta
8.1
Very good
11,004 reviews
Check prices

Food

7.5

Crew

8.6

Entertainment

8.0

Overall

8.1

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from Illinois to London Heathrow Airport for under $600 on Cheapflights?

    Yes, there are multiple flights from Illinois to London Heathrow Airport for under $600. The cheapest flight booked recently is on Scandinavian Airlines for just $539, but on average you can expect to pay $565.

  • Are there nonstop flights from Illinois to London Heathrow Airport for under $600 on Cheapflights?

    Cheapflights has at least 20 direct flights from Illinois to London Heathrow Airport under $600. A good price for a nonstop flight from Illinois to London Heathrow Airport is less than $636.

  • Are there last-minute flights available from Illinois to London Heathrow Airport for under $600?

    There are currently 20+ open flights from Illinois to London Heathrow Airport within the next 7 days for less than $600.

  • What are the most popular routes from Illinois to London Heathrow Airport?

    The most popular flight routes from Illinois to London Heathrow Airport are Chicago O'Hare Intl - London Heathrow, Chicago Midway - London Heathrow and Lambert-St Louis - London Heathrow.

  • What are the most popular airlines that fly from Illinois to London Heathrow Airport?

    The most popular airlines flying from Illinois to London Heathrow Airport are American Airlines, Air Canada and Air France. Something to consider prior to booking your flight.

  • What are the most reliable airlines from Illinois to London Heathrow Airport?

    Consider EL AL (90%), Qatar Airways (79%) or Malaysia Airlines (74%) when booking your flight. These represent the most reliable airlines when flying from Illinois to London Heathrow Airport.

  • What are the cheapest flights from Illinois to London Heathrow Airport?

    While on average a flight from Illinois to London Heathrow Airport is generally $1,722, our data shows the cheapest flight currently is $447. When looking at the most popular route, (Chicago O'Hare Intl - London Heathrow), you can expect to pay $500 for that flight.

  • What does ORD to LHR mean?

    Great question - ORD to LHR just means Chicago O'Hare Intl Airport to London Heathrow Airport. Now you’ll know what these unique codes when you look for flights! Chicago Midway Airport (MDW), Moline Quad-City Airport (MLI), Greater Peoria Airport (PIA), Bloomington-Normal Airport (BMI), Champaign University-Willard Airport (CMI) are some additional IATA codes for airports related to your trip.

  • Can I find deals for flights from Illinois to Heathrow that include extra baggage allowance?

    The amount of baggage you can bring on your Illinois to Heathrow flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Illinois to Heathrow with specific airlines?

    Yes, Cheapflights allows you to browse and filter Illinois to Heathrow flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Illinois to Heathrow that include hotel bookings?

    Yes. In addition to deals on Illinois to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Heathrow.

  • Can I find deals for business class flights from Illinois to Heathrow?

    Yes. Cheapflights offers flight deals from Illinois to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Illinois to Heathrow that allow pets onboard?

    Many airlines flying from Illinois to Heathrow offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Illinois to Heathrow?

    Yes, you can often find last-minute deals on Illinois to Heathrow flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Illinois to London Heathrow Airport flight deals updated?

    The Illinois to London Heathrow Airport flight deals you see on this page were last updated on 4/23.

See more FAQs

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Alternative routes for Illinois to Heathrow
See prices for flight routes from nearby airports that may be better suited for you.

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Top 10 airlines flying from Illinois to Heathrow

Discover the top 10 airlines that operate flights from Illinois to Heathrow. 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 3,086,534 searches. Data last updated April 24, 2024.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$253Average$839FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Scandinavian AirlinesCheapest$414Average$506FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
DeltaCheapest$451Average$821FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
IcelandairCheapest$503Average$687FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
TAP AIR PORTUGALCheapest$511Average$871FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Aer LingusCheapest$531Average$780FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest$572Average$881FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest$573Average$722FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
IberiaCheapest$581Average$756FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Virgin AtlanticCheapest$583Average$683FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
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Search flights from Illinois to Heathrow by cabin class

Find flights from Illinois to Heathrow, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Business Class
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Economy Class

Hourly flight availability from Illinois to Heathrow

Find hourly flight availability from Illinois to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 24, 2024.
1%of flight departuresEarly morningMidnight to 6 am
10%of flight departuresMorning6 am to noon
45%of flight departuresAfternoonNoon to 6 pm
44%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

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When you search for this flight from Illinois to Heathrow, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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Can Cheapflights find flights from Illinois to Heathrow with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Illinois to Heathrow flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Illinois to Heathrow become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from Illinois today and book when prices fit your budget.

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