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Cheap flights from London Stansted Airport to Illinois from £310

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 19/5. Fares are subject to change and may not be available on all flights or dates of travel.
STN — ORD
20 Apr — 27 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Stansted to Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Stansted to Illinois
Explore the most affordable flight options available from Stansted to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 March 2026.

Tue 21/419:15
STN
-
ORD
2 stops29h 00m
Multiple Airlines
Mon 27/419:25
ORD
-
STN
2 stops17h 25m
Multiple Airlines
Deal found 16/3£440
Tue 14/412:45
STN
-
ORD
2 stops35h 30m
Multiple Airlines
Tue 21/419:25
ORD
-
STN
2 stops22h 45m
Multiple Airlines
Deal found 17/3£446
Sat 18/421:40
STN
-
ORD
2 stops29h 45m
Multiple Airlines
Tue 28/419:25
ORD
-
STN
2 stops22h 45m
Multiple Airlines
Deal found 20/3£454
Fri 1/506:50
STN
-
ORD
2 stops20h 35m
Multiple Airlines
Fri 8/522:25
ORD
-
STN
2 stops20h 25m
Multiple Airlines
Deal found 17/3£462
Mon 20/406:30
STN
-
ORD
3 stops34h 23m
Multiple Airlines
Mon 4/519:25
ORD
-
STN
2 stops17h 50m
Multiple Airlines
Deal found 17/3£478
Tue 21/418:55
STN
-
ORD
2 stops27h 05m
Multiple Airlines
Fri 24/422:25
ORD
-
STN
2 stops16h 05m
Multiple Airlines
Deal found 16/3£479
Tue 14/412:45
STN
-
ORD
2 stops35h 30m
Multiple Airlines
Sat 18/419:25
ORD
-
STN
2 stops22h 40m
Multiple Airlines
Deal found 19/3£480
Wed 20/507:00
STN
-
ORD
2 stops17h 15m
Multiple Airlines
Mon 25/519:25
ORD
-
STN
2 stops15h 25m
Multiple Airlines
Deal found 17/3£481
Fri 10/406:50
STN
-
ORD
2 stops17h 25m
Multiple Airlines
Fri 17/422:25
ORD
-
STN
2 stops20h 25m
Multiple Airlines
Deal found 19/3£481
Fri 24/406:20
STN
-
ORD
2 stops21h 05m
Multiple Airlines
Tue 28/419:25
ORD
-
STN
2 stops22h 45m
Multiple Airlines
Deal found 16/3£484
Thu 21/513:15
STN
-
ORD
2 stops32h 55m
Multiple Airlines
Thu 28/519:15
ORD
-
STN
2 stops22h 05m
Multiple Airlines
Deal found 18/3£484
Mon 20/410:50
STN
-
STL
2 stops40h 23m
Turkish Airlines
Thu 30/407:45
STL
-
STN
2 stops44h 10m
Turkish Airlines
Deal found 16/3£995

Find flight deals from Stansted to Illinois

Keep the following information in mind while searching for Stansted to Illinois flight deals. Data was last updated 21 March 2026.

Round-trip from

£446

One-way from

£310

Popular in

July

Cheapest in

September

Average price

£561
14/4-21/4
  • 14/4-21/4
  • 4 total stops
  • 58h 15m total
  • London to Illinois
Search Deals
19/5
  • 19/5
  • 3 total stops
  • 29h 09m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£56 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Stansted 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 858,174 searches. Data last updated 21 March 2026.
Use the filters below to find and compare flights from London Stansted Airport to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonChicago

STN - ORD

STNORD

London Stansted

Mon 14/9

10:50-09:40

1 stop28h 50m

Chicago O'Hare Intl

Mon 28/9

11:25-16:40

1 stop23h 15m

£618

LondonChicago

STN - ORD

STNORD

London Stansted

Tue 14/4

06:55-18:15

1 stop17h 20m

Chicago O'Hare Intl

Mon 20/4

20:10-22:10

1 stop20h 00m

£619

LondonChicago

STN - ORD

STNORD

London Stansted

Mon 20/4

10:50-18:15

1 stop37h 25m

Chicago O'Hare Intl

Mon 4/5

11:25-22:10

1 stop28h 45m

£627
Fastest return journey

LondonChicago

STN - ORD

STNORD

London Stansted

Fri 19/6

06:55-18:15

1 stop17h 20m

Chicago O'Hare Intl

Fri 10/7

11:25-09:55

1 stop16h 30m

£635

LondonChicago

STN - ORD

STNORD

London Stansted

Tue 7/7

06:55-18:15

1 stop17h 20m

Chicago O'Hare Intl

Tue 14/7

11:25-16:50

1 stop23h 25m

£653

LondonChicago

STN - ORD

STNORD

London Stansted

Fri 3/7

17:35-18:15

1 stop30h 40m

Chicago O'Hare Intl

Sat 25/7

11:25-16:40

1 stop23h 15m

£660

LondonChicago

STN - ORD

STNORD

London Stansted

Mon 1/6

10:50-09:40

1 stop28h 50m

Chicago O'Hare Intl

Fri 31/7

11:25-09:55

1 stop16h 30m

£712

LondonChicago

STN - ORD

STNORD

London Stansted

Sat 27/6

17:45-18:15

1 stop30h 30m

Chicago O'Hare Intl

Sun 12/7

11:25-09:55

1 stop16h 30m

£762

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Mon 20/4

10:50-21:13

2 stops40h 23m

Lambert-St Louis

Thu 30/4

07:45-09:55

2 stops44h 10m

£995

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Tue 21/4

06:55-21:13

2 stops20h 18m

Lambert-St Louis

Mon 27/4

07:45-09:55

2 stops44h 10m

£999

Flights are sorted by cheapest return flights first.

Deals found on 20/3

Showing 1-10 of 34 resultsSorted by cheapest first
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Best time to book a flight from Stansted to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Stansted with our price prediction graph.
Estimated return 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.

Cheapflights Insights

Everything you need to know about your flight from London Stansted Airport to Illinois
No data available for this route at this time. Please check back soon.

Related info for your journey

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

  • How long is the flight from London Stansted Airport to Illinois?

    Departing from London Stansted Airport to Illinois will take you 28h 50m. The distance from London Stansted Airport to Illinois is about 3952 mi.

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

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

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

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

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

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

See more FAQs

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Alternative routes for Stansted to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Gatwick to San Francisco flights
Stansted to O'Hare Intl flights
Heathrow to Midway flights
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Luton to Miami flights
Stansted to San Francisco flights
Heathrow to Charlotte flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Stansted to Illinois?

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

Certainly. Search results for flights to Illinois from Stansted shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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Not ready to book yet? You can track prices for flights from Stansted to Illinois on Cheapflights with our Price Alert feature and get notified when better prices are available.

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