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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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
STN — ORD
3 Feb — 10 Feb1
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 4 January 2026.

Fri 6/211:55STN - ORD
2 stops34h 50mMultiple Airlines
Sun 8/219:10ORD - STN
2 stops18h 20mMultiple Airlines
Deal found 3/1£426
Wed 4/314:15STN - ORD
2 stops30h 55mMultiple Airlines
Sun 8/318:20ORD - STN
2 stops20h 10mMultiple Airlines
Deal found 2/1£429
Sat 24/106:55STN - ORD
2 stops16h 25mMultiple Airlines
Sat 31/118:30ORD - STN
2 stops17h 30mMultiple Airlines
Deal found 4/1£429
Fri 16/113:50STN - ORD
2 stops33h 30mMultiple Airlines
Mon 19/118:30ORD - STN
2 stops15h 15mMultiple Airlines
Deal found 2/1£434
Mon 12/113:30STN - ORD
1 stop11h 45mMultiple Airlines
Mon 19/121:00ORD - STN
1 stop15h 20mMultiple Airlines
Deal found 4/1£436
Fri 20/219:00STN - ORD
2 stops25h 20mMultiple Airlines
Sun 1/316:25ORD - STN
2 stops22h 30mMultiple Airlines
Deal found 2/1£440
Fri 16/112:00STN - ORD
1 stop13h 15mMultiple Airlines
Fri 23/121:00ORD - STN
1 stop10h 20mMultiple Airlines
Deal found 4/1£440
Fri 23/112:00STN - ORD
1 stop13h 15mMultiple Airlines
Mon 26/121:00ORD - STN
1 stop18h 20mMultiple Airlines
Deal found 2/1£443
Mon 26/111:30STN - ORD
1 stop13h 45mMultiple Airlines
Fri 30/121:00ORD - STN
1 stop15h 20mMultiple Airlines
Deal found 4/1£445
Wed 14/108:30STN - ORD
2 stops14h 50mMultiple Airlines
Wed 21/118:30ORD - STN
2 stops12h 50mMultiple Airlines
Deal found 4/1£449
Sun 1/206:30STN - ORD
2 stops16h 25mMultiple Airlines
Sun 8/219:10ORD - STN
3 stops21h 50mMultiple Airlines
Deal found 4/1£452
Sat 28/305:50STN - STL
3 stops38h 34mMultiple Airlines
Tue 7/416:05STL - STN
3 stops25h 40mMultiple Airlines
Deal found 4/1£1,099

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 4 January 2026.

Round-trip from

£426

One-way from

£348

Popular in

July

Cheapest in

February

Average price

£461
6/2-8/2
  • 6/2-8/2
  • 4 total stops
  • 53h 10m total
  • London to Illinois
Search Deals
2/2
  • 2/2
  • 3 total stops
  • 56h 13m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£65 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

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 4 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

Mon 23/2

06:10-16:45

2 stops16h 35m

Chicago O'Hare Intl

Fri 27/2

19:20-16:15

2 stops14h 55m

£472

LondonChicago

STN - ORD

STNORD

London Stansted

Sat 18/4

05:55-17:50

2 stops17h 55m

Chicago O'Hare Intl

Sun 26/4

15:45-07:50

1 stop10h 05m

£489

LondonChicago

STN - ORD

STNORD

London Stansted

Sat 14/3

06:30-17:45

2 stops16h 15m

Chicago O'Hare Intl

Sun 22/3

20:20-23:00

3 stops21h 40m

£490

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 23/4

07:00-17:50

2 stops16h 50m

Chicago O'Hare Intl

Sun 26/4

15:45-07:50

1 stop10h 05m

£497

LondonChicago

STN - ORD

STNORD

London Stansted

Wed 1/4

07:00-17:50

2 stops16h 50m

Chicago O'Hare Intl

Mon 27/4

15:45-07:50

1 stop10h 05m

£514

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 14/5

16:55-17:50

2 stops30h 55m

Chicago O'Hare Intl

Tue 19/5

15:45-07:50

1 stop10h 05m

£518

LondonChicago

STN - ORD

STNORD

London Stansted

Wed 25/2

05:55-14:55

1 stop15h 00m

Chicago O'Hare Intl

Sun 15/3

19:30-18:05

2 stops17h 35m

£528

LondonChicago

STN - ORD

STNORD

London Stansted

Wed 18/2

06:30-17:20

2 stops16h 50m

Chicago O'Hare Intl

Wed 25/2

18:30-13:20

2 stops12h 50m

£530

LondonChicago

STN - ORD

STNORD

London Stansted

Tue 14/4

06:30-18:15

2 stops17h 45m

Chicago O'Hare Intl

Fri 24/4

22:25-20:30

2 stops16h 05m

£556

LondonChicago

STN - ORD

STNORD

London Stansted

Wed 22/4

21:30-14:15

1 stop22h 45m

Chicago O'Hare Intl

Wed 13/5

15:45-07:50

1 stop10h 05m

£562

Flights are sorted by cheapest return flights first.

Deals found on 3/1

Showing 1-10 of 41 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 40h 13m. 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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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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