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Cheap flights from London Stansted Airport to Illinois from £302

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 13/4. Fares are subject to change and may not be available on all flights or dates of travel.
STN — ORD
29 Mar — 5 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 27 February 2026.

Mon 13/408:30
STN
-
ORD
2 stops16h 55m
Multiple Airlines
Mon 27/419:25
ORD
-
STN
3 stops20h 10m
Multiple Airlines
Deal found 26/2£406
Thu 30/406:30
STN
-
ORD
2 stops17h 20m
Multiple Airlines
Thu 7/519:25
ORD
-
STN
2 stops21h 30m
Multiple Airlines
Deal found 27/2£409
Wed 29/422:00
STN
-
ORD
2 stops25h 50m
Multiple Airlines
Sun 3/519:25
ORD
-
STN
3 stops23h 25m
Multiple Airlines
Deal found 25/2£415
Mon 13/408:30
STN
-
ORD
2 stops15h 20m
Multiple Airlines
Wed 22/419:25
ORD
-
STN
3 stops21h 55m
Multiple Airlines
Deal found 24/2£417
Sun 19/412:40
STN
-
ORD
2 stops33h 30m
Multiple Airlines
Wed 22/419:15
ORD
-
STN
2 stops20h 15m
Multiple Airlines
Deal found 24/2£418
Tue 14/418:55
STN
-
ORD
2 stops27h 05m
Multiple Airlines
Mon 20/419:25
ORD
-
STN
2 stops22h 55m
Multiple Airlines
Deal found 24/2£421
Thu 23/406:30
STN
-
ORD
2 stops18h 55m
Multiple Airlines
Sun 26/419:25
ORD
-
STN
2 stops15h 50m
Multiple Airlines
Deal found 27/2£423
Sat 18/413:50
STN
-
ORD
2 stops32h 10m
Multiple Airlines
Sat 25/419:25
ORD
-
STN
2 stops17h 05m
Multiple Airlines
Deal found 24/2£428
Wed 20/506:30
STN
-
STL
2 stops19h 34m
Multiple Airlines
Fri 7/814:40
STL
-
STN
2 stops20h 55m
Multiple Airlines
Deal found 25/2£685
Fri 31/719:15
STN
-
STL
2 stops24h 47m
Multiple Airlines
Thu 13/808:55
STL
-
STN
2 stops30h 25m
Multiple Airlines
Deal found 26/2£867
Sat 8/806:35
STN
-
STL
3 stops19h 27m
Multiple Airlines
Mon 17/812:10
STL
-
STN
2 stops21h 05m
Multiple Airlines
Deal found 27/2£898
Sun 12/422:00
STN
-
STL
2 stops23h 24m
Multiple Airlines
Sun 19/415:30
STL
-
STN
2 stops24h 50m
Multiple Airlines
Deal found 25/2£944

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 27 February 2026.

Round-trip from

£406

One-way from

£302

Popular in

July

Cheapest in

September

Average price

£436
13/4-27/4
  • 13/4-27/4
  • 5 total stops
  • 37h 05m total
  • London to Illinois
Search Deals
13/4
  • 13/4
  • 3 total stops
  • 33h 12m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£58 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 27 February 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

LondonChicago

STN - ORD

STNORD

London Stansted

Wed 22/4

06:55-18:15

1 stop17h 20m

Chicago O'Hare Intl

Sun 26/4

11:25-09:55

1 stop16h 30m

£637

LondonChicago

STN - ORD

STNORD

London Stansted

Fri 3/7

06:40-18:15

1 stop17h 35m

Chicago O'Hare Intl

Sat 25/7

11:25-09:55

1 stop16h 30m

£671

LondonChicago

STN - ORD

STNORD

London Stansted

Mon 1/6

10:50-09:40

1 stop28h 50m

Chicago O'Hare Intl

Fri 31/7

20:10-09:55

1 stop31h 45m

£712

LondonChicago

STN - ORD

STNORD

London Stansted

Sat 2/5

17:45-09:40

1 stop21h 55m

Chicago O'Hare Intl

Fri 8/5

20:10-22:10

1 stop20h 00m

£776

LondonChicago

STN - ORD

STNORD

London Stansted

Mon 1/6

10:50-09:40

1 stop28h 50m

Chicago O'Hare Intl

Tue 30/6

11:25-09:55

1 stop16h 30m

£778

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 4/6

17:35-09:40

1 stop22h 05m

Chicago O'Hare Intl

Wed 10/6

11:25-16:40

1 stop23h 15m

£803

LondonChicago

STN - ORD

STNORD

London Stansted

Tue 26/5

17:35-18:15

1 stop30h 40m

Chicago O'Hare Intl

Thu 11/6

20:10-16:50

1 stop38h 40m

£803

LondonChicago

STN - ORD

STNORD

London Stansted

Fri 1/5

17:35-09:40

1 stop22h 05m

Chicago O'Hare Intl

Sun 10/5

20:10-16:40

1 stop38h 30m

£815

LondonChicago

STN - ORD

STNORD

London Stansted

Wed 27/5

17:45-09:40

1 stop21h 55m

Chicago O'Hare Intl

Sun 31/5

20:10-16:40

1 stop38h 30m

£944

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Mon 20/4

10:50-21:08

2 stops40h 18m

Lambert-St Louis

Thu 30/4

07:45-16:40

2 stops26h 55m

£1,095

Flights are sorted by cheapest return flights first.

Deals found on 24/2

Showing 1-10 of 40 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 17h 20m. 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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Luton to Los Angeles flights
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Heathrow to Midway flights
Stansted to Boston flights
Heathrow to Detroit flights
Heathrow to Raleigh flights
Gatwick to Las Vegas flights

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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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