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Cheap flights from London Stansted Airport to Illinois from £346

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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
STN — ORD
11 Mar — 18 Mar1
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 9 February 2026.

Tue 24/316:10
STN
-
ORD
2 stops31h 10m
Multiple Airlines
Tue 31/319:25
ORD
-
STN
2 stops22h 45m
Multiple Airlines
Deal found 7/2£437
Thu 12/313:45
STN
-
ORD
2 stops33h 10m
Multiple Airlines
Wed 18/320:20
ORD
-
STN
2 stops21h 30m
Multiple Airlines
Deal found 8/2£455
Tue 21/406:30
STN
-
ORD
2 stops18h 55m
Multiple Airlines
Tue 5/519:25
ORD
-
STN
2 stops14h 35m
Multiple Airlines
Deal found 7/2£462
Mon 2/306:00
STN
-
ORD
2 stops16h 45m
Multiple Airlines
Wed 11/320:20
ORD
-
STN
2 stops20h 55m
Multiple Airlines
Deal found 8/2£463
Fri 9/1006:40
STN
-
ORD
2 stops17h 10m
Multiple Airlines
Tue 13/1015:45
ORD
-
STN
1 stop15h 00m
Multiple Airlines
Deal found 6/2£467
Wed 8/406:30
STN
-
ORD
2 stops17h 45m
Multiple Airlines
Wed 15/419:25
ORD
-
STN
2 stops21h 55m
Multiple Airlines
Deal found 7/2£469
Wed 25/308:30
STN
-
ORD
2 stops14h 50m
Multiple Airlines
Wed 1/419:25
ORD
-
STN
2 stops19h 55m
Multiple Airlines
Deal found 8/2£471
Fri 1/506:40
STN
-
ORD
2 stops17h 10m
Multiple Airlines
Mon 11/515:45
ORD
-
STN
1 stop10h 05m
Multiple Airlines
Deal found 8/2£475
Fri 11/906:40
STN
-
ORD
2 stops17h 10m
Multiple Airlines
Mon 21/921:00
ORD
-
STN
1 stop14h 05m
Multiple Airlines
Deal found 8/2£477
Sat 2/506:35
STN
-
STL
3 stops19h 29m
Multiple Airlines
Sun 17/513:00
STL
-
STN
2 stops21h 50m
Multiple Airlines
Deal found 8/2£668
Sun 3/508:30
STN
-
STL
3 stops19h 22m
Multiple Airlines
Sun 17/513:00
STL
-
STN
2 stops21h 50m
Multiple Airlines
Deal found 8/2£764
Sun 17/506:35
STN
-
STL
2 stops19h 29m
Multiple Airlines
Wed 17/607:30
STL
-
STN
3 stops32h 35m
Multiple Airlines
Deal found 6/2£851

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 9 February 2026.

Round-trip from

£437

One-way from

£346

Popular in

July

Cheapest in

September

Average price

£435
24/3-31/3
  • 24/3-31/3
  • 4 total stops
  • 53h 55m total
  • London to Illinois
Search Deals
10/5
  • 10/5
  • 1 total stop
  • 36h 40m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£57 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 9 February 2026.
Use the filters below to find and compare flights from London Stansted Airport to Illinois that are best for you.

Fly from

Stansted

Fly to

Illinois

Route

Depart

Return

Price

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 12/3

13:45-17:55

2 stops33h 10m

Chicago O'Hare Intl

Wed 18/3

20:20-22:50

2 stops21h 30m

£455

LondonChicago

STN - ORD

STNORD

London Stansted

Wed 15/4

07:00-16:10

1 stop15h 10m

Chicago O'Hare Intl

Wed 22/4

19:15-14:05

1 stop12h 50m

£529

LondonChicago

STN - ORD

STNORD

London Stansted

Wed 8/4

21:30-14:15

1 stop22h 45m

Chicago O'Hare Intl

Wed 15/4

19:25-22:05

2 stops20h 40m

£535

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 23/4

06:00-14:15

1 stop14h 15m

Chicago O'Hare Intl

Sun 26/4

19:25-19:35

2 stops18h 10m

£542

LondonChicago

STN - ORD

STNORD

London Stansted

Mon 23/3

08:30-15:00

1 stop11h 30m

Chicago O'Hare Intl

Mon 30/3

15:45-12:50

1 stop15h 05m

£569

LondonChicago

STN - ORD

STNORD

London Stansted

Tue 10/3

08:30-18:20

2 stops14h 50m

Chicago O'Hare Intl

Tue 17/3

19:30-14:20

2 stops13h 50m

£590

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 5/3

09:05-20:00

2 stops16h 55m

Chicago O'Hare Intl

Sun 8/3

22:55-23:25

1 stop19h 30m

£594

LondonChicago

STN - ORD

STNORD

London Stansted

Wed 6/5

17:45-09:40

1 stop21h 55m

Chicago O'Hare Intl

Wed 13/5

11:25-22:10

1 stop28h 45m

£602

LondonChicago

STN - ORD

STNORD

London Stansted

Mon 23/2

09:35-09:39

3 stops30h 04m

Chicago O'Hare Intl

Fri 27/2

21:00-16:35

1 stop13h 35m

£618

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 2/7

17:45-09:40

1 stop21h 55m

Chicago O'Hare Intl

Mon 6/7

23:50-22:10

1 stop16h 20m

£621

Flights are sorted by cheapest return flights first.

Deals found on 6/2

Showing 1-10 of 45 results
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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.

  • 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.

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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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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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