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$181+ Cheap flights from Illinois to London (LON)

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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LON
Nov 18 — Nov 251
Mon 11/18
Mon 11/25
1 adult, Economy
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Cheap flight deals from Illinois to London

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to London (LON). 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 November 13, 2024.

Find flight deals from Illinois to London

Cheapest flights from Illinois to London
Explore the most affordable flight options available from Illinois to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2024.

This TAP AIR PORTUGAL deal was found by Cheapflights users on 11/12. 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.
Fri 12/68:20 pmORD - LGW
1 stop13h 25mTAP AIR PORTUGAL
Fri 12/139:30 pmLGW - ORD
2 stops48h 00mTAP AIR PORTUGAL
Deal found 11/12$582
This oojo deal was found by Cheapflights users on 11/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/46:30 pmORD - LHR
1 stop19h 00mIcelandair
Sun 12/88:40 pmLHR - ORD
1 stop26h 40mIcelandair
Deal found 11/11$583
This Mytrip deal was found by Cheapflights users on 11/12. 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.
Sun 12/86:30 pmORD - LGW
1 stop10h 25mMultiple Airlines
Tue 12/1012:00 pmLGW - ORD
1 stop23h 30mMultiple Airlines
Deal found 11/12$585
This Mytrip deal was found by Cheapflights users on 11/12. 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.
Sun 12/18:25 pmORD - LHR
1 stop20h 15mTAP AIR PORTUGAL
Sat 12/147:55 pmLHR - ORD
1 stop25h 35mTAP AIR PORTUGAL
Deal found 11/12$587
This JetBlue deal was found by Cheapflights users on 11/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/287:15 amORD - LHR
1 stop16h 40mJetBlue
Fri 1/108:25 amLHR - ORD
1 stop15h 28mJetBlue
Deal found 11/12$597
This oojo deal was found by Cheapflights users on 11/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/266:30 pmORD - LGW
1 stop10h 25mIcelandair
Tue 12/1011:55 amLGW - ORD
1 stop11h 25mIcelandair
Deal found 11/12$597
This Gotogate deal was found by Cheapflights users on 11/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/27:10 pmORD - LHR
2 stops20h 25mScandinavian Airlines
Wed 12/117:30 pmLHR - ORD
1 stop26h 20mScandinavian Airlines
Deal found 11/12$598
This Mytrip deal was found by Cheapflights users on 11/11. 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.
Sun 12/13:35 pmORD - LTN
2 stops24h 55mMultiple Airlines
Tue 12/176:50 amLTN - ORD
2 stops19h 05mMultiple Airlines
Deal found 11/11$598
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Mon 11/1810:32 pmMDW - LGW
1 stop30h 03mMultiple Airlines
Sat 11/232:35 pmLGW - MDW
2 stops56h 26mMultiple Airlines
Deal found 11/12$601
This Gotogate deal was found by Cheapflights users on 11/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/17:20 amORD - LHR
2 stops17h 10mAir Canada
Tue 12/106:50 amLHR - ORD
2 stops19h 05mAir Canada
Deal found 11/13$608
This Gotogate deal was found by Cheapflights users on 11/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/277:20 amORD - LHR
2 stops17h 10mMultiple Airlines
Tue 12/37:25 pmLHR - ORD
1 stop24h 40mMultiple Airlines
Deal found 11/11$614
This Travelocity deal was found by Cheapflights users on 11/12. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/89:45 pmORD - LHR
Nonstop7h 45mBritish Airways
Tue 12/176:10 amLHR - ORD
1 stop14h 20mBritish Airways
Deal found 11/12$619

Find flights from Illinois to London within your budget

Customize your flight search to find flights from Illinois to London 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 2,744,491 searches. Data last updated November 13, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Mon 1/6

7:10 pm-4:00 pm

1 stop14h 50m

London Heathrow

Tue 4/8

10:20 am-4:10 pm

1 stop11h 50m

$580

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Fri 2/28

6:30 pm-10:50 am

1 stop10h 20m

London Heathrow

Thu 3/13

12:15 pm-6:20 pm

1 stop11h 05m

$581

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Mon 1/6

7:10 pm-6:50 pm

1 stop17h 40m

London Gatwick

Mon 1/13

7:00 am-3:50 pm

1 stop14h 50m

$581

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Sun 1/12

7:10 pm-8:00 pm

1 stop18h 50m

London Stansted

Sun 1/19

6:20 am-3:50 pm

1 stop15h 30m

$581

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Fri 12/6

8:20 pm-3:45 pm

1 stop13h 25m

London Gatwick

Fri 12/13

9:30 pm-3:30 pm

2 stops48h 00m

$582

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sat 1/11

7:00 am-5:55 am

1 stop16h 55m

London Heathrow

Sun 1/19

8:25 am-5:53 pm

1 stop15h 28m

$583

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 12/1

8:25 pm-10:40 pm

1 stop20h 15m

London Heathrow

Sat 12/14

7:55 pm-3:30 pm

1 stop25h 35m

$587

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Tue 4/22

7:30 pm-2:40 pm

1 stop13h 10m

London Gatwick

Tue 4/29

3:40 pm-6:20 pm

1 stop32h 40m

$588

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sun 12/1

3:35 pm-10:30 pm

2 stops24h 55m

London Luton

Tue 12/17

6:50 am-7:55 pm

2 stops19h 05m

$598

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Wed 4/23

10:55 pm-12:45 pm

Nonstop7h 50m

London Heathrow

Wed 4/30

10:20 am-5:25 pm

1 stop13h 05m

$614

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

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

Have a flexible travel schedule? Discover the best time to fly to London 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 London

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

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

Currently, November is the cheapest month in which you can book a flight from Illinois to London (average of $648). Flying from Illinois to London 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 LON?

Find hourly flight availability from Illinois to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 13, 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 as you normally would.

Weekly flight availability from Illinois to London

Explore weekly flight availability from Illinois to London. 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 November 13, 2024.

The most flights from USIL to LON 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 London by month

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

In terms of precipitation, rainfall in London 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 when rainfall is around 1.6 in.

Temperature in London by month

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

If weather is an important factor for your trip to London, 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 London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated November 13, 2024.
To help decide which airline to fly from Illinois to London, see what other customers have to say about Virgin Atlantic, KLM and Air Canada. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,789 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

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
8,789 reviews
Delta
8.0
Very good
8,789 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 10

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

KLM
7.8
Good
1,346 reviews
Delta
8.0
Very good
8,789 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 10

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

Air Transat
7.8
Good
387 reviews
Delta
8.0
Very good
8,789 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 10

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

Porter Airlines
7.7
Good
288 reviews
Delta
8.0
Very good
8,789 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 10

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

Finnair
7.7
Good
1,302 reviews
Delta
8.0
Very good
8,789 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

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 London. 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 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 $278 and $314 on WestJet and TAP AIR PORTUGAL, respectively.

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

    While some choose either Chicago O'Hare Intl - London Gatwick or Chicago O'Hare Intl - London City, Chicago O'Hare Intl - London Heathrow is the most popular route from Illinois to London.

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

    No one likes to see their flight delayed. When booking a flight from Illinois to London consider choosing Royal Jordanian (78%), Brussels Airlines (77%) or Air Canada (76%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Illinois to London?

    On average you can expect to pay $1,694 for a flight from Illinois to London. The cheapest flight overall is $383 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at $463.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to London 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?

    Currently, November is the cheapest month in which you can book a flight from Illinois to London (average of $648). Flying from Illinois to London 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 London

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 London

Discover the top 10 airlines that operate flights from Illinois to London. 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 2,744,491 searches. Data last updated November 13, 2024.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$381Average$546FlexibilityNo cancel feeOn-time77%
DeltaCheapest$451Average$879FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$472Average$641FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$506Average$826FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$554Average$748FlexibilityNo cancel feeOn-time67%
FinnairCheapest$563Average$792FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$571Average$701FlexibilityNo cancel feeOn-time72%
IberiaCheapest$579Average$745FlexibilityNo cancel feeOn-time77%
SWISSCheapest$581Average$897FlexibilityNo cancel feeOn-time79%
LufthansaCheapest$582Average$904FlexibilityNo cancel feeOn-time76%
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