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Cheap flights from London Stansted Airport to Illinois from £348

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 31/1. Fares are subject to change and may not be available on all flights or dates of travel.
STN — ORD
17 Jan — 24 Jan1
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 18 December 2025.

Wed 24/1206:30STN - ORD
1 stop13h 30mMultiple Airlines
Wed 31/1219:40ORD - STN
1 stop13h 25mMultiple Airlines
Deal found 17/12£621
Tue 16/1214:30STN - ORD
2 stops30h 30mMultiple Airlines
Sat 31/107:20ORD - STN
3 stops20h 25mMultiple Airlines
Deal found 16/12£665
Wed 24/1206:30STN - ORD
1 stop13h 30mMultiple Airlines
Sat 3/121:52ORD - STN
2 stops33h 28mMultiple Airlines
Deal found 17/12£689
Fri 26/1212:00STN - ORD
1 stop11h 55mMultiple Airlines
Fri 2/119:40ORD - STN
1 stop18h 25mMultiple Airlines
Deal found 17/12£711
Fri 19/1206:30STN - ORD
1 stop13h 30mMultiple Airlines
Mon 22/1215:50ORD - STN
1 stop10h 00mMultiple Airlines
Deal found 15/12£716
Mon 22/1219:55STN - ORD
2 stops30h 05mMultiple Airlines
Mon 12/116:38ORD - STN
2 stops20h 02mMultiple Airlines
Deal found 15/12£745
Wed 24/1206:30STN - ORD
1 stop13h 30mMultiple Airlines
Wed 7/121:00ORD - STN
1 stop18h 05mMultiple Airlines
Deal found 17/12£760
Sun 28/1206:15STN - ORD
1 stop14h 30mMultiple Airlines
Mon 12/116:38ORD - STN
2 stops20h 02mMultiple Airlines
Deal found 17/12£765
Wed 24/1206:30STN - ORD
1 stop13h 30mMultiple Airlines
Tue 6/121:00ORD - STN
1 stop18h 20mMultiple Airlines
Deal found 17/12£777
Sat 27/1215:15STN - ORD
3 stops31h 30mMultiple Airlines
Sat 3/119:20ORD - STN
2 stops20h 00mMultiple Airlines
Deal found 17/12£783
Tue 16/1219:45STN - STL
2 stops24h 10mMultiple Airlines
Sat 31/116:05STL - STN
2 stops17h 25mMultiple Airlines
Deal found 16/12£1,508
Wed 17/1220:05STN - STL
3 stops29h 17mMultiple Airlines
Sat 31/116:05STL - STN
3 stops25h 30mMultiple Airlines
Deal found 17/12£1,598

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 18 December 2025.

Round-trip from

£449

One-way from

£348

Popular in

July

Cheapest in

February

Average price

£597
30/1-6/2
  • 30/1-6/2
  • 4 total stops
  • 54h 35m total
  • London to Illinois
Search Deals
31/1
  • 31/1
  • 3 total stops
  • 53h 50m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£61 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 December 2025
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 18 December 2025.
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

Fri 30/1

13:50-17:20

2 stops33h 30m

Chicago O'Hare Intl

Fri 6/2

18:30-21:35

2 stops21h 05m

£449

LondonChicago

STN - ORD

STNORD

London Stansted

Sat 31/1

07:15-16:45

1 stop15h 30m

Chicago O'Hare Intl

Sat 7/2

19:20-13:05

1 stop11h 45m

£465

LondonChicago

STN - ORD

STNORD

London Stansted

Mon 23/2

19:50-14:55

2 stops25h 05m

Chicago O'Hare Intl

Mon 16/3

16:50-07:50

1 stop10h 00m

£472

LondonChicago

STN - ORD

STNORD

London Stansted

Sun 25/1

18:20-16:45

2 stops28h 25m

Chicago O'Hare Intl

Fri 30/1

19:10-22:35

3 stops21h 25m

£482

LondonChicago

STN - ORD

STNORD

London Stansted

Mon 19/1

07:35-16:45

1 stop15h 10m

Chicago O'Hare Intl

Mon 26/1

19:20-15:45

1 stop14h 25m

£505

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 29/1

12:00-19:15

1 stop13h 15m

Chicago O'Hare Intl

Thu 5/2

21:00-16:35

1 stop13h 35m

£508

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 22/1

13:45-19:15

1 stop11h 30m

Chicago O'Hare Intl

Thu 29/1

21:00-18:20

1 stop15h 20m

£508

LondonChicago

STN - ORD

STNORD

London Stansted

Mon 16/3

10:55-15:55

2 stops34h 00m

Chicago O'Hare Intl

Tue 14/4

15:45-12:45

1 stop15h 00m

£515

LondonChicago

STN - ORD

STNORD

London Stansted

Sat 14/3

14:40-15:45

2 stops30h 05m

Chicago O'Hare Intl

Tue 14/4

15:45-12:45

1 stop15h 00m

£520

LondonChicago

STN - ORD

STNORD

London Stansted

Sun 15/3

19:15-15:55

2 stops25h 40m

Chicago O'Hare Intl

Tue 14/4

15:45-09:50

1 stop12h 05m

£529

Flights are sorted by cheapest return flights first.

Deals found on 17/12

Showing 1-10 of 38 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.

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

    Departing from London Stansted Airport to Illinois will take you 33h 19m. The distance from London Stansted Airport to Illinois is about 4200 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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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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