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Cheap flights from London Stansted Airport to Illinois from £340

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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.
STN — ORD
15 Sep — 22 Sep1
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 16 August 2026.

Sun 27/908:30 -
1 stop16h 45m
Sun 4/1015:45 -
1 stop10h 05m
Deal found 13/8£469
Wed 9/922:45 -
1 stop21h 15m
Tue 15/921:00 -
1 stop19h 20m
Deal found 15/8£470
Thu 10/906:30 -
1 stop18h 45m
Sun 13/921:00 -
1 stop20h 25m
Deal found 15/8£471
Thu 17/906:30 -
1 stop13h 30m
Mon 21/915:45 -
1 stop10h 05m
Deal found 12/8£471
Sat 19/910:25 -
2 stops34h 45m
Sat 26/916:15 -
2 stops16h 45m
Deal found 15/8£472
Thu 15/1008:30 -
1 stop16h 45m
Sun 18/1015:45 -
1 stop10h 05m
Deal found 12/8£476
Fri 25/906:35 -
2 stops19h 13m
Fri 2/1022:25 -
2 stops16h 45m
Deal found 11/8£481
Sat 26/913:15 -
1 stop12h 00m
Sat 3/1015:45 -
1 stop10h 05m
Deal found 12/8£482
Mon 28/906:30 -
1 stop13h 30m
Mon 5/1021:00 -
1 stop16h 25m
Deal found 14/8£483
Mon 28/905:55 -
2 stops18h 46m
Mon 5/1014:40 -
2 stops18h 50m
Deal found 14/8£717
Fri 4/906:35 -
2 stops19h 47m
Fri 25/912:10 -
2 stops23h 25m
Deal found 12/8£799
Wed 2/922:25 -
2 stops27h 57m
Wed 23/914:40 -
2 stops22h 50m
Deal found 14/8£861

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 16 August 2026.

Round-trip from

£469

One-way from

£340

Popular in

July

Cheapest in

February

Average price

£705
27/9-4/10
  • 27/9-4/10
  • 2 total stops
  • 26h 50m total
  • London to Illinois
Search Deals
22/9
  • 22/9
  • 3 total stops
  • 28h 35m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£83 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 16 August 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

Cheapest return flight
Fastest return journey

LondonChicago

STN London Stansted - ORD Chicago O'Hare Intl

STNORD

London Stansted

Tue 17/11

17:20-10:00

1 stop22h 40m

Chicago O'Hare Intl

Tue 1/12

11:45-09:55

1 stop16h 10m

£666

LondonChicago

STN London Stansted - ORD Chicago O'Hare Intl

STNORD

London Stansted

Thu 24/9

17:35-09:40

1 stop22h 05m

Chicago O'Hare Intl

Tue 29/9

11:25-16:50

1 stop23h 25m

£666

LondonChicago

STN London Stansted - ORD Chicago O'Hare Intl

STNORD

London Stansted

Wed 30/9

17:45-09:40

1 stop21h 55m

Chicago O'Hare Intl

Thu 15/10

20:10-16:50

1 stop38h 40m

£666

LondonChicago

STN London Stansted - ORD Chicago O'Hare Intl

STNORD

London Stansted

Wed 10/2

10:55-10:00

1 stop29h 05m

Chicago O'Hare Intl

Wed 24/2

11:45-09:55

1 stop16h 10m

£666

LondonChicago

STN London Stansted - ORD Chicago O'Hare Intl

STNORD

London Stansted

Thu 24/9

17:35-09:40

1 stop22h 05m

Chicago O'Hare Intl

Mon 5/10

20:10-09:55

1 stop31h 45m

£667

LondonChicago

STN London Stansted - ORD Chicago O'Hare Intl

STNORD

London Stansted

Thu 8/10

17:35-09:40

1 stop22h 05m

Chicago O'Hare Intl

Tue 13/10

11:25-16:50

1 stop23h 25m

£667

LondonChicago

STN London Stansted - ORD Chicago O'Hare Intl

STNORD

London Stansted

Wed 23/9

17:45-09:40

1 stop21h 55m

Chicago O'Hare Intl

Mon 28/9

20:10-09:55

1 stop31h 45m

£667

LondonChicago

STN London Stansted - ORD Chicago O'Hare Intl

STNORD

London Stansted

Sat 10/10

10:50-09:40

1 stop28h 50m

Chicago O'Hare Intl

Thu 15/10

20:10-16:50

1 stop38h 40m

£676

LondonChicago

STN London Stansted - ORD Chicago O'Hare Intl

STNORD

London Stansted

Thu 26/11

17:20-10:00

1 stop22h 40m

Chicago O'Hare Intl

Sun 29/11

11:45-09:55

1 stop16h 10m

£698

LondonChicago

STN London Stansted - ORD Chicago O'Hare Intl

STNORD

London Stansted

Sat 21/11

10:55-18:20

1 stop37h 25m

Chicago O'Hare Intl

Wed 25/11

20:15-09:55

1 stop31h 40m

£700

Flights are sorted by cheapest return flights first.

Deals found on 11/8

Showing 1-10 of 39 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 22h 40m. 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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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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