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Cheap flights from London Stansted Airport to Illinois from £249

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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
STN — ORD
18 Feb — 25 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Stansted to Illinois

Keep the following information in mind while searching for Stansted to Illinois flight deals. Data was last updated 19 January 2026.

Round-trip from

£406

One-way from

£249

Popular in

July

Cheapest in

February

Average price

£466
24/4-26/4
  • 24/4-26/4
  • 4 total stops
  • 39h 05m total
  • London to Illinois
Search Deals
9/2
  • 9/2
  • 3 total stops
  • 45h 32m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£66 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 January 2026
Search Deals

Find 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 19 January 2026.

Fri 24/406:50
STN
-
ORD
2 stops20h 35m
Multiple Airlines
Sun 26/419:25
ORD
-
STN
2 stops18h 30m
Multiple Airlines
Deal found 16/1£406
Fri 20/215:15
STN
-
ORD
2 stops31h 30m
Multiple Airlines
Mon 23/219:20
ORD
-
STN
2 stops20h 00m
Multiple Airlines
Deal found 17/1£424
Sat 18/420:55
STN
-
ORD
2 stops26h 55m
Multiple Airlines
Sun 26/415:45
ORD
-
STN
1 stop10h 05m
Multiple Airlines
Deal found 17/1£427
Fri 13/221:45
STN
-
ORD
2 stops25h 00m
Multiple Airlines
Mon 16/219:20
ORD
-
STN
2 stops20h 00m
Multiple Airlines
Deal found 17/1£427
Tue 3/221:45
STN
-
ORD
2 stops21h 40m
Multiple Airlines
Tue 10/221:50
ORD
-
STN
2 stops17h 30m
Multiple Airlines
Deal found 18/1£431
Mon 16/206:30
STN
-
ORD
1 stop18h 45m
Multiple Airlines
Mon 23/221:00
ORD
-
STN
1 stop15h 20m
Multiple Airlines
Deal found 18/1£435
Tue 10/221:20
STN
-
ORD
2 stops42h 19m
Multiple Airlines
Mon 2/315:50
ORD
-
STN
1 stop10h 00m
Multiple Airlines
Deal found 18/1£436
Tue 10/221:20
STN
-
ORD
2 stops42h 19m
Multiple Airlines
Wed 4/315:50
ORD
-
STN
1 stop10h 00m
Multiple Airlines
Deal found 19/1£437
Fri 6/215:15
STN
-
ORD
2 stops31h 30m
Multiple Airlines
Mon 9/219:20
ORD
-
STN
2 stops20h 00m
Multiple Airlines
Deal found 18/1£440
Sat 24/113:30
STN
-
ORD
1 stop11h 45m
Multiple Airlines
Fri 6/221:00
ORD
-
STN
1 stop15h 20m
Multiple Airlines
Deal found 17/1£442
Mon 26/110:15
STN
-
ORD
1 stop15h 00m
Multiple Airlines
Sun 8/221:00
ORD
-
STN
1 stop10h 20m
Multiple Airlines
Deal found 19/1£443
Sat 11/419:15
STN
-
STL
3 stops26h 09m
Multiple Airlines
Sat 18/416:05
STL
-
STN
3 stops26h 50m
Multiple Airlines
Deal found 19/1£877

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 19 January 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

Wed 22/4

07:00-17:50

2 stops16h 50m

Chicago O'Hare Intl

Tue 28/4

15:45-07:50

1 stop10h 05m

£449

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 23/4

07:00-17:50

2 stops16h 50m

Chicago O'Hare Intl

Tue 28/4

15:45-07:50

1 stop10h 05m

£455

LondonChicago

STN - ORD

STNORD

London Stansted

Sat 28/2

16:20-14:45

2 stops28h 25m

Chicago O'Hare Intl

Tue 3/3

21:00-22:25

2 stops19h 25m

£460

LondonChicago

STN - ORD

STNORD

London Stansted

Tue 3/3

20:25-15:00

2 stops24h 35m

Chicago O'Hare Intl

Tue 10/3

20:40-22:25

2 stops20h 45m

£465

LondonChicago

STN - ORD

STNORD

London Stansted

Sat 28/2

21:00-09:39

2 stops42h 39m

Chicago O'Hare Intl

Wed 4/3

21:00-15:05

1 stop12h 05m

£474

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 12/2

08:30-19:15

1 stop16h 45m

Chicago O'Hare Intl

Tue 3/3

21:00-14:20

1 stop11h 20m

£478

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 12/2

20:05-19:15

2 stops29h 10m

Chicago O'Hare Intl

Thu 19/2

21:00-00:05

2 stops21h 05m

£484

LondonChicago

STN - ORD

STNORD

London Stansted

Fri 27/2

05:55-09:39

3 stops33h 44m

Chicago O'Hare Intl

Tue 3/3

21:00-22:25

2 stops19h 25m

£486

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 12/3

06:30-18:20

2 stops16h 50m

Chicago O'Hare Intl

Tue 17/3

19:50-19:40

2 stops18h 50m

£488

LondonChicago

STN - ORD

STNORD

London Stansted

Fri 30/1

05:55-22:42

3 stops46h 47m

Chicago O'Hare Intl

Thu 5/2

18:30-17:30

2 stops17h 00m

£496

Flights are sorted by cheapest return flights first.

Deals found on 18/1

Showing 1-10 of 37 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

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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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