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

For one-way options, check prices for JetBlue. According to our data, you can fly for as low as $274. Users have also found prices from $276 and $308 on Icelandair and Lufthansa, 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 cheapest flights from Illinois to London?

On average you can expect to pay $1,383 for a flight from Illinois to London. The cheapest flight overall is $393 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at $484.

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 Aer Lingus (80%), Air Canada (74%) or Austrian Airlines (74%) as they are the most reliable in getting you off to your destination on time.

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

When booking a flight from Illinois to London, you may want to consider flying on American Airlines, Air Canada or Alaska Airlines as they are the most popular for this route.

How far in advance should I book a flight from Illinois to London?

Find a great deal and save up to 13% by booking at least 60 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Illinois to London within the next two weeks, with the cheapest ticket starting at $746.

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

Our data shows that February tends to be the cheapest month to fly to London from Illinois. Users have commonly found prices around $760 for the month, but tickets can be as low as $473. Due to multiple factors, prepare for potentially higher prices in June.

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.

$266+ Save on Flights from Illinois to London

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Cheap flight deals from Illinois to London

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$585 (Booking.com)
One-way from	$266 (Mytrip)
Popular in	June
Cheapest in	February
Average price	$651
Good round-trip deal	$659 or less
Good one-way deal	$457 or less

Provider with most accurate pricing for Chicago (CHI)-London (LON) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Chicago (CHI)-London (LON) flights.

Search Deals

From Illinois to London (LON)

Search Deals

One-way flight from Illinois to London (LON)

Search Deals

Highest demand for flights based on searches. 18% potential increase in price ($178 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

Price to beat on a round-trip flight from Illinois to London (LON).

Search Deals

Price to beat on a one-way flight from Illinois to London (LON).

Search Deals

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 February 22, 2025.

Tue 4/14:55 pmORD - LHR

Nonstop7h 55mFinnair

Tue 4/2910:20 amLHR - ORD

1 stop13h 30mFinnair

Deal found 2/21

$585

Thu 4/34:32 pmORD - LGW

1 stop32h 23mMultiple Airlines

Thu 4/247:40 amLGW - ORD

3 stops31h 44mMultiple Airlines

Deal found 2/21

$585

Tue 4/17:30 pmORD - LHR

1 stop10h 25mIcelandair

Tue 4/291:05 pmLHR - ORD

1 stop11h 15mIcelandair

Deal found 2/21

$586

Sun 3/99:25 pmORD - LGW

2 stops18h 15mTAP AIR PORTUGAL

Tue 3/184:35 pmLGW - ORD

1 stop28h 55mTAP AIR PORTUGAL

Deal found 2/21

$586

Sun 3/98:55 pmORD - LHR

2 stops18h 00mScandinavian Airlines

Sun 3/169:05 pmLHR - ORD

2 stops26h 45mScandinavian Airlines

Deal found 2/21

$587

Wed 4/2310:15 pmORD - LGW

1 stop10h 25mIcelandair

Sun 4/273:40 pmLGW - ORD

1 stop32h 40mIcelandair

Deal found 2/21

$587

Tue 4/225:45 pmORD - LHR

Nonstop7h 35mIberia

Wed 4/3010:00 amLHR - ORD

1 stop13h 39mIberia

Deal found 2/21

$588

Sun 2/239:00 pmORD - LHR

1 stop12h 35mAer Lingus

Tue 3/48:50 amLHR - ORD

1 stop11h 10mAer Lingus

Deal found 2/22

$593

Sun 4/2710:15 pmORD - LTN

2 stops17h 50mMultiple Airlines

Tue 4/299:50 pmLTN - ORD

3 stops37h 55mMultiple Airlines

Deal found 2/21

$596

Wed 3/268:15 pmORD - STN

2 stops17h 30mMultiple Airlines

Tue 4/110:05 pmSTN - ORD

2 stops24h 05mMultiple Airlines

Deal found 2/22

$596

Wed 3/57:15 pmORD - LHR

1 stop14h 15mTAP AIR PORTUGAL

Thu 3/137:55 pmLHR - ORD

1 stop25h 35mTAP AIR PORTUGAL

Deal found 2/22

$606

Thu 4/242:20 pmORD - LGW

1 stop21h 30mSWISS

Tue 5/66:35 pmLGW - ORD

1 stop23h 35mSWISS

Deal found 2/21

$607

Best flights from Illinois to London
Discover carefully curated flight deals from Illinois to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 22, 2025.

Tue 4/14:55 pmORD - LHR

Nonstop7h 55mFinnair

Tue 4/297:30 amLHR - ORD

1 stop16h 20mFinnair

Deal found 2/22

$585

Thu 4/34:32 pmORD - LGW

1 stop32h 23mMultiple Airlines

Thu 4/247:40 amLGW - ORD

3 stops31h 44mMultiple Airlines

Deal found 2/21

$585

Tue 4/17:30 pmORD - LHR

1 stop10h 25mIcelandair

Tue 4/291:05 pmLHR - ORD

1 stop11h 15mIcelandair

Deal found 2/21

$586

Sun 3/99:25 pmORD - LGW

2 stops18h 15mTAP AIR PORTUGAL

Tue 3/184:35 pmLGW - ORD

1 stop28h 55mTAP AIR PORTUGAL

Deal found 2/21

$586

Sun 3/98:55 pmORD - LHR

2 stops18h 00mScandinavian Airlines

Sun 3/169:05 pmLHR - ORD

2 stops26h 45mScandinavian Airlines

Deal found 2/21

$587

Mon 3/245:11 pmORD - LHR

1 stop11h 09mIberia

Wed 4/22:25 pmLHR - ORD

Nonstop8h 35mIberia

Deal found 2/21

$588

Tue 3/114:55 pmORD - LHR

1 stop11h 10mAer Lingus

Thu 3/2012:10 pmLHR - ORD

1 stop11h 45mAer Lingus

Deal found 2/21

$593

Thu 4/242:20 pmORD - LGW

1 stop21h 30mSWISS

Tue 5/66:35 pmLGW - ORD

1 stop23h 35mSWISS

Deal found 2/21

$607

Wed 4/3011:36 amORD - LGW

1 stop14h 34mBritish Airways

Mon 5/58:40 pmLGW - ORD

1 stop23h 35mBritish Airways

Deal found 2/21

$614

Mon 4/76:05 pmORD - LHR

Nonstop8h 15mUnited Airlines

Mon 4/148:40 amLHR - ORD

1 stop13h 15mUnited Airlines

Deal found 2/21

$616

Sun 3/92:55 pmMDW - LHR

1 stop10h 55mKLM

Tue 3/189:10 amLHR - MDW

1 stop14h 08mKLM

Deal found 2/21

$616

Sun 3/94:00 pmORD - LHR

1 stop14h 50mAir Canada

Wed 3/198:55 amLHR - ORD

2 stops16h 00mAir Canada

Deal found 2/21

$620

Last-minute flights from Illinois to London
Discover last-minute flight deals from Illinois to London. Data last updated February 22, 2025 and is based on user searches.

Tue 2/256:30 pmORD - LHR

1 stop10h 20mIcelandair

Tue 3/412:15 pmLHR - ORD

1 stop11h 05mIcelandair

Deal found 2/21

$586

Wed 2/269:00 pmORD - LHR

1 stop10h 25mAer Lingus

Wed 3/58:50 amLHR - ORD

1 stop11h 10mAer Lingus

Deal found 2/21

$589

Thu 2/2711:55 amORD - LGW

1 stop27h 35mTurkish Airlines

Wed 3/54:55 pmLGW - ORD

1 stop23h 15mTurkish Airlines

Deal found 2/21

$628

Fri 2/287:40 pmORD - LHR

1 stop14h 20mScandinavian Airlines

Mon 3/37:05 amLHR - ORD

2 stops16h 45mScandinavian Airlines

Deal found 2/22

$586

Sat 3/13:40 pmORD - LHR

1 stop36h 30mMultiple Airlines

Fri 3/148:55 amLHR - ORD

1 stop13h 20mMultiple Airlines

Deal found 2/22

$627

Sun 3/28:25 pmORD - LHR

1 stop19h 10mTAP AIR PORTUGAL

Tue 3/116:30 pmLHR - ORD

1 stop27h 00mTAP AIR PORTUGAL

Deal found 2/21

$606

Sun 3/28:25 pmORD - LGW

2 stops18h 15mTAP AIR PORTUGAL

Tue 3/114:35 pmLGW - ORD

1 stop28h 55mTAP AIR PORTUGAL

Deal found 2/21

$614

Sun 3/23:55 pmORD - LHR

1 stop10h 10mAer Lingus

Wed 3/127:50 amLHR - ORD

1 stop12h 10mAer Lingus

Deal found 2/22

$625

Sun 3/24:19 pmMDW - LGW

1 stop33h 56mMultiple Airlines

Wed 3/1212:00 pmLGW - MDW

1 stop32h 13mMultiple Airlines

Deal found 2/22

$627

Mon 3/311:46 amORD - LGW

1 stop14h 29mMultiple Airlines

Wed 3/1212:00 pmLGW - ORD

1 stop15h 23mMultiple Airlines

Deal found 2/22

$605

Mon 3/37:40 pmORD - LTN

2 stops20h 15mMultiple Airlines

Wed 3/126:00 pmLTN - ORD

2 stops29h 50mMultiple Airlines

Deal found 2/21

$613

Mon 3/37:40 pmORD - STN

2 stops17h 25mMultiple Airlines

Sun 3/98:45 amSTN - ORD

2 stops35h 15mMultiple Airlines

Deal found 2/21

$630

One-way flights from Illinois to London
Search for one-way flight options from Illinois to London. Find affordable one-way fares based on user searches. Data last updated February 22, 2025.

Tue 4/85:55 amORD - LHR

2 stops24h 00mMultiple Airlines

Deal found 2/21

$266

Sun 4/2710:15 pmORD - LTN

2 stops17h 50mMultiple Airlines

Deal found 2/22

$266

Mon 3/105:22 pmORD - LGW

2 stops17h 03mMultiple Airlines

Deal found 2/21

$267

Thu 3/2712:35 pmMDW - LGW

1 stop16h 25mMultiple Airlines

Deal found 2/22

$270

Wed 3/1211:44 amORD - LHR

1 stop16h 46mJetBlue

Deal found 2/20

$274

Sun 4/2710:15 pmORD - LHR

1 stop16h 05mIcelandair

Deal found 2/21

$276

Sun 4/67:30 pmORD - LGW

1 stop10h 15mIcelandair

Deal found 2/22

$277

Tue 3/186:45 amORD - STN

3 stops22h 15mMultiple Airlines

Deal found 2/21

$278

Wed 3/2612:26 pmMDW - LHR

3 stops39h 39mMultiple Airlines

Deal found 2/21

$303

Wed 4/236:05 pmORD - LHR

Nonstop8h 15mLufthansa

Deal found 2/22

$308

Sun 3/94:45 pmORD - LHR

1 stop15h 05mWestJet

Deal found 2/22

$314

Wed 3/268:15 pmORD - LHR

1 stop14h 15mTAP AIR PORTUGAL

Deal found 2/21

$349

Find flights from Illinois to London within your budget

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 4/1

4:55 pm-6:50 am

Nonstop7h 55m

London Heathrow

Tue 4/29

9:30 am-5:50 pm

1 stop14h 20m

$585

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Thu 4/3

4:32 pm-6:55 am

1 stop32h 23m

London Gatwick

Thu 4/24

7:40 am-9:24 am

3 stops31h 44m

$585

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 4/1

7:30 pm-11:55 am

1 stop10h 25m

London Heathrow

Tue 4/29

1:05 pm-6:20 pm

1 stop11h 15m

$586

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Sun 3/9

9:25 pm-8:40 pm

2 stops18h 15m

London Gatwick

Tue 3/18

4:35 pm-4:30 pm

1 stop28h 55m

$586

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Sun 3/9

8:55 pm-7:55 pm

2 stops18h 00m

London Heathrow

Sun 3/16

9:05 pm-6:50 pm

2 stops26h 45m

$587

ChicagoLondon

ORD - LGW

ORDLGW

Chicago O'Hare Intl

Wed 4/23

10:15 pm-2:40 pm

1 stop10h 25m

London Gatwick

Mon 4/28

3:40 pm-6:20 pm

1 stop32h 40m

$587

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 4/22

5:45 pm-7:20 am

Nonstop7h 35m

London Heathrow

Wed 4/30

10:00 am-5:39 pm

1 stop13h 39m

$588

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

Tue 3/11

4:55 pm-9:05 am

1 stop11h 10m

London Heathrow

Thu 3/20

12:10 pm-6:55 pm

1 stop11h 45m

$593

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sun 4/27

10:15 pm-10:05 pm

2 stops17h 50m

London Luton

Tue 4/29

9:50 pm-5:45 am

3 stops37h 55m

$596

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Wed 3/26

8:15 pm-6:45 pm

2 stops17h 30m

London Stansted

Tue 4/1

10:05 pm-4:10 pm

2 stops24h 05m

$596

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 60 results

...

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 $661). Flying from Illinois to London in June is currently the most expensive (average of $1,136). 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?

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

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

Rainfall in London 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

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

To help decide which airline to fly from Illinois to London, see what other customers have to say about Delta, Porter Airlines and KLM. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

8,203 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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

Delta

8.0

Very good

8,203 reviews

Delta

8.0

Very good

8,203 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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

Porter Airlines

7.9

Good

277 reviews

Delta

8.0

Very good

8,203 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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

KLM

7.8

Good

1,332 reviews

Delta

8.0

Very good

8,203 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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

Air Transat

7.8

Good

382 reviews

Delta

8.0

Very good

8,203 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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

LOT

7.6

Good

1,079 reviews

Delta

8.0

Very good

8,203 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

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

Related info for your journey

What are the cheapest airlines to fly from Illinois to London one-way?
For one-way options, check prices for JetBlue. According to our data, you can fly for as low as $274. Users have also found prices from $276 and $308 on Icelandair and Lufthansa, 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 Aer Lingus (80%), Air Canada (74%) or Austrian Airlines (74%) 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 $1,383 for a flight from Illinois to London. The cheapest flight overall is $393 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at $484.
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 $661). Flying from Illinois to London in June is currently the most expensive (average of $1,136). 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.

See more FAQs

Hounslow

Hayes

Thornton Heath

Harrow

Luton

Wembley

Horley

Canterbury

Gatwick

Milton Keynes

Dover

Orpington

Watford

Croydon

Borehamwood

Bromley

Folkestone

Ilford

Aylesbury

Chelmsford

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from Illinois to London

Airline	Cheapest	Average	Flexibility	On-time
Scandinavian Airlines	Cheapest$381	Average$576	FlexibilityNo cancel fee	On-time77%
Delta	Cheapest$451	Average$882	FlexibilityNo cancel fee	On-timeN/A
Icelandair	Cheapest$464	Average$622	FlexibilityNo cancel fee	On-time76%
TAP AIR PORTUGAL	Cheapest$506	Average$812	FlexibilityNo cancel fee	On-timeN/A
JetBlue	Cheapest$516	Average$679	FlexibilityNo cancel fee	On-time62%
Lufthansa	Cheapest$550	Average$920	FlexibilityNo cancel fee	On-time76%
Air Canada	Cheapest$554	Average$749	FlexibilityNo cancel fee	On-time67%
Finnair	Cheapest$566	Average$748	FlexibilityNo cancel fee	On-time76%
SWISS	Cheapest$581	Average$896	FlexibilityNo cancel fee	On-time79%
Iberia	Cheapest$582	Average$862	FlexibilityNo cancel fee	On-time77%

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$266+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to London with Cheapflights

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Cheap flight deals from Illinois to London

Keep the following information in mind while searching for Illinois to London flight deals. Data was last updated February 22, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Illinois to London

Cheapest flights from Illinois to LondonExplore 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 February 22, 2025.

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 February 22, 2025.

Find flights from Illinois to London within your budget

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.

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?

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 February 22, 2025.

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 February 22, 2025.

Rainfall in London by month

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

Temperature in London by month

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

Reviews of airlines servicing London

To help decide which airline to fly from Illinois to London, see what other customers have to say about Delta, Porter Airlines and KLM. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

What are the most popular routes from Illinois to London?

What are the most reliable airlines from Illinois to London?

What are the cheapest flights from Illinois to London?

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

How can I find direct flights from Illinois to London?

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

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

Traveling to a place near Illinois?

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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.

Top 10 airlines flying from Illinois to London

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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 February 22, 2025.