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Cheap flights from London Stansted Airport to Illinois from £300

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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
STN — ORD
4 Mar — 11 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 2 February 2026.

Sat 7/206:55
STN
-
ORD
2 stops16h 25m
Multiple Airlines
Mon 9/218:30
ORD
-
STN
2 stops14h 00m
Multiple Airlines
Deal found 31/1£428
Thu 9/408:30
STN
-
ORD
2 stops16h 55m
Multiple Airlines
Thu 16/419:25
ORD
-
STN
2 stops14h 35m
Multiple Airlines
Deal found 1/2£434
Sun 1/312:00
STN
-
ORD
2 stops34h 45m
Multiple Airlines
Sun 8/320:20
ORD
-
STN
2 stops20h 00m
Multiple Airlines
Deal found 1/2£456
Tue 25/817:00
STN
-
ORD
2 stops32h 04m
Multiple Airlines
Tue 22/915:45
ORD
-
STN
1 stop12h 05m
Multiple Airlines
Deal found 31/1£469
Tue 25/817:00
STN
-
ORD
2 stops32h 04m
Multiple Airlines
Wed 23/915:45
ORD
-
STN
1 stop10h 05m
Multiple Airlines
Deal found 31/1£478
Fri 25/906:40
STN
-
ORD
2 stops17h 10m
Multiple Airlines
Wed 30/921:00
ORD
-
STN
1 stop14h 35m
Multiple Airlines
Deal found 1/2£482
Thu 19/206:30
STN
-
ORD
1 stop18h 45m
Multiple Airlines
Mon 23/221:00
ORD
-
STN
1 stop11h 20m
Multiple Airlines
Deal found 1/2£483
Fri 18/906:40
STN
-
ORD
2 stops17h 10m
Multiple Airlines
Sun 20/915:45
ORD
-
STN
1 stop12h 05m
Multiple Airlines
Deal found 31/1£490
Sat 7/214:20
STN
-
ORD
2 stops30h 25m
Multiple Airlines
Sun 22/218:30
ORD
-
STN
2 stops14h 40m
Multiple Airlines
Deal found 1/2£491
Sat 28/215:50
STN
-
STL
2 stops28h 05m
Multiple Airlines
Sun 1/318:55
STL
-
STN
3 stops22h 50m
Multiple Airlines
Deal found 1/2£908
Sat 2/520:05
STN
-
STL
3 stops30h 00m
Multiple Airlines
Sat 16/507:30
STL
-
STN
3 stops30h 55m
Multiple Airlines
Deal found 31/1£918
Tue 17/313:35
STN
-
STL
3 stops30h 20m
Multiple Airlines
Tue 24/316:05
STL
-
STN
3 stops23h 45m
Multiple Airlines
Deal found 31/1£988

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 2 February 2026.

Round-trip from

£434

One-way from

£300

Popular in

July

Cheapest in

February

Average price

£422
9/4-16/4
  • 9/4-16/4
  • 4 total stops
  • 31h 30m total
  • London to Illinois
Search Deals
7/4
  • 7/4
  • 3 total stops
  • 47h 30m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£63 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 2 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 9/4

08:30-19:25

2 stops16h 55m

Chicago O'Hare Intl

Thu 16/4

19:25-16:00

2 stops14h 35m

£434

LondonChicago

STN - ORD

STNORD

London Stansted

Sun 1/3

06:30-14:00

1 stop13h 30m

Chicago O'Hare Intl

Sun 8/3

16:50-09:50

1 stop12h 00m

£473

LondonChicago

STN - ORD

STNORD

London Stansted

Fri 13/2

12:00-16:45

2 stops34h 45m

Chicago O'Hare Intl

Mon 16/2

19:20-21:20

2 stops20h 00m

£496

LondonChicago

STN - ORD

STNORD

London Stansted

Tue 14/4

06:30-18:15

2 stops17h 45m

Chicago O'Hare Intl

Sat 18/4

19:25-16:00

2 stops14h 35m

£501

LondonChicago

STN - ORD

STNORD

London Stansted

Sun 15/2

06:30-16:55

2 stops16h 25m

Chicago O'Hare Intl

Thu 19/2

19:20-23:20

2 stops22h 00m

£507

LondonChicago

STN - ORD

STNORD

London Stansted

Mon 2/3

08:30-14:00

1 stop11h 30m

Chicago O'Hare Intl

Mon 16/3

16:50-09:50

1 stop12h 00m

£524

LondonChicago

STN - ORD

STNORD

London Stansted

Mon 13/4

05:50-14:15

1 stop14h 25m

Chicago O'Hare Intl

Mon 4/5

19:25-19:15

2 stops17h 50m

£533

LondonChicago

STN - ORD

STNORD

London Stansted

Thu 4/6

06:30-19:15

1 stop18h 45m

Chicago O'Hare Intl

Mon 8/6

15:45-14:40

1 stop16h 55m

£538

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Sat 2/5

20:05-20:05

3 stops30h 00m

Lambert-St Louis

Sat 16/5

07:30-20:25

3 stops30h 55m

£918

LondonSt. Louis

STN - STL

STNSTL

London Stansted

Tue 17/3

13:35-14:55

3 stops30h 20m

Lambert-St Louis

Tue 24/3

16:05-20:50

3 stops23h 45m

£988

Flights are sorted by cheapest return flights first.

Deals found on 1/2

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 40h 18m. 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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