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$201+ Cheap flights from Illinois to Heathrow (LHR)

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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LHR
nov. 25 — dic. 21
lun. 11/25
lun. 12/2
1 adult, Economy
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Cheap flight deals from Illinois to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated noviembre 20, 2024.

Find flight deals from Illinois to Heathrow

Cheapest flights from Illinois to Heathrow
Explore the most affordable flight options available from Illinois to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 20, 2024.

This Mytrip deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/410:43 amORD - LHR
2 stops19h 07mMultiple Airlines
mar. 12/1012:05 pmLHR - ORD
2 stops18h 29mMultiple Airlines
Deal found 11/19$599
This TAP AIR PORTUGAL deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/88:25 pmORD - LHR
1 stop19h 10mTAP AIR PORTUGAL
mar. 12/108:15 amLHR - ORD
2 stops31h 03mTAP AIR PORTUGAL
Deal found 11/18$600
This lol.travel deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/411:35 amORD - LHR
1 stop13h 35mAir Canada
mar. 12/106:50 amLHR - ORD
2 stops13h 55mAir Canada
Deal found 11/19$607
This Icelandair deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/316:30 pmORD - LHR
1 stop10h 20mIcelandair
mié. 1/1512:15 pmLHR - ORD
1 stop11h 05mIcelandair
Deal found 11/19$609
This United Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/45:50 pmORD - LHR
Nonstop8h 05mUnited Airlines
mar. 12/101:45 pmLHR - ORD
1 stop32h 30mUnited Airlines
Deal found 11/19$618
This Delta deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/302:55 pmORD - LHR
1 stop11h 00mDelta
mié. 1/158:40 amLHR - ORD
1 stop11h 50mDelta
Deal found 11/19$628
This Booking.com deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/45:00 pmORD - LHR
Nonstop7h 50mBritish Airways
mar. 12/103:45 pmLHR - ORD
Nonstop9h 00mBritish Airways
Deal found 11/19$631
This Kiwi.com deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/191:21 pmORD - LHR
2 stops18h 44mAustrian Airlines
mar. 11/267:25 pmLHR - ORD
1 stop24h 40mAustrian Airlines
Deal found 11/19$635
This Finnair deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/3110:00 pmORD - LHR
Nonstop7h 40mFinnair
mié. 1/1511:55 amLHR - ORD
Nonstop8h 50mFinnair
Deal found 11/19$637
This Delta deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/49:30 amMDW - LHR
1 stop15h 35mDelta
mar. 12/106:30 amLHR - MDW
2 stops16h 31mDelta
Deal found 11/19$637
This Flighttix deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/41:30 pmMDW - LHR
1 stop11h 20mVirgin Atlantic
mar. 12/102:30 pmLHR - MDW
1 stop13h 36mVirgin Atlantic
Deal found 11/19$640
This KLM deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/42:17 pmMDW - LHR
1 stop10h 48mKLM
jue. 12/122:30 pmLHR - MDW
1 stop13h 36mKLM
Deal found 11/19$648

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 2,629,791 searches. Data last updated noviembre 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

lun. 1/20

7:10 pm-3:10 pm

1 stop14h 00m

London Heathrow

lun. 1/27

7:05 am-3:50 pm

1 stop14h 45m

$595

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mar. 1/21

6:30 pm-10:50 am

1 stop10h 20m

London Heathrow

mar. 4/22

1:05 pm-6:20 pm

1 stop11h 15m

$596

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

jue. 3/6

7:10 pm-4:00 pm

1 stop14h 50m

London Heathrow

mié. 3/12

7:30 pm-4:50 pm

1 stop26h 20m

$597

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

dom. 12/8

8:25 pm-9:35 pm

1 stop19h 10m

London Heathrow

mar. 12/10

8:15 am-9:18 am

2 stops31h 03m

$600

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mié. 1/22

10:00 pm-11:40 am

Nonstop7h 40m

London Heathrow

vie. 1/31

6:25 am-2:30 pm

1 stop14h 05m

$602

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

dom. 1/19

6:35 pm-8:15 am

Nonstop7h 40m

London Heathrow

mar. 4/22

10:20 am-5:25 pm

1 stop13h 05m

$608

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

lun. 12/2

11:35 am-7:10 am

1 stop13h 35m

London Heathrow

vie. 12/13

6:00 am-4:15 pm

1 stop16h 15m

$617

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mié. 1/8

5:00 pm-6:50 am

Nonstop7h 50m

London Heathrow

mar. 1/14

3:45 pm-6:45 pm

Nonstop9h 00m

$621

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

lun. 12/30

9:10 pm-11:15 am

Nonstop8h 05m

London Heathrow

mar. 1/14

8:30 am-3:15 pm

1 stop12h 45m

$623

ChicagoLondon

MDW - LHR

MDWLHR

Chicago Midway

mié. 12/4

9:30 am-7:05 am

1 stop15h 35m

London Heathrow

mar. 12/10

6:30 am-5:01 pm

2 stops16h 31m

$637

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Illinois to Heathrow

Get recent, data-driven insights about flights from Illinois to Heathrow including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Illinois to London Heathrow Airport?

Currently, November is the cheapest month in which you can book a flight from Illinois to London Heathrow Airport (average of $648). Flying from Illinois to London Heathrow Airport in June is currently the most expensive (average of $1,089). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to LHR?

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 noviembre 20, 2024.

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.

Weekly flight availability from Illinois to London Heathrow Airport

Explore weekly flight availability from Illinois to Heathrow. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated noviembre 20, 2024.

The most flights from USIL to LHR are scheduled on a Monday (38 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (33 on average).

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 noviembre 20, 2024.
To help decide which airline to fly from Illinois to London, see what other customers have to say about Iberia, Air Canada and United Airlines. 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
8.0
Very good
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,756 reviews
Delta
8.0
Very good
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,350 reviews
Delta
8.0
Very good
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.7
Good
1,300 reviews
Delta
8.0
Very good
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Austrian Airlines
7.6
Good
805 reviews
Delta
8.0
Very good
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.6
Good
1,637 reviews
Delta
8.0
Very good
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines to fly from Illinois to London Heathrow Airport one-way?

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as $201. Users have also found prices from $305 and $343 on TAP AIR PORTUGAL and JetBlue, respectively.

  • 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 reliable airlines from Illinois to London Heathrow Airport?

    Consider Brussels Airlines (75%), Air Canada (74%) or Austrian 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 $1,625, our data shows the cheapest flight currently is $375. When looking at the most popular route, (Chicago O'Hare Intl - London Heathrow), you can expect to pay $475 for that flight.

  • 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.

  • What is the cheapest month to book a flight from Illinois to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Illinois to London Heathrow Airport (average of $648). Flying from Illinois to London Heathrow Airport in June is currently the most expensive (average of $1,089). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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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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Dallas/Fort Worth to Gatwick flights

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 2,629,791 searches. Data last updated noviembre 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$381Average$549FlexibilityNo cancel feeOn-time77%
DeltaCheapest$451Average$879FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$472Average$618FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$506Average$827FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$554Average$754FlexibilityNo cancel feeOn-time67%
FinnairCheapest$566Average$792FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$571Average$701FlexibilityNo cancel feeOn-time72%
SWISSCheapest$581Average$897FlexibilityNo cancel feeOn-time79%
IberiaCheapest$584Average$745FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$592Average$868FlexibilityNo cancel feeOn-time77%
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