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Cheap flights from Peoria, Illinois to London Heathrow Airport from £243

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 23/8. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — LHR
19 May — 26 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Peoria to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Peoria to Heathrow
Explore the most affordable flight options available from Peoria to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 April 2026.

Sun 23/814:33
PIA
-
LHR
1 stop15h 22m
United Airlines
Tue 15/907:25
LHR
-
PIA
2 stops22h 57m
United Airlines
Deal found 14/4£647
Sun 23/810:06
PIA
-
LHR
1 stop20h 09m
British Airways
Tue 15/906:15
LHR
-
PIA
2 stops22h 48m
British Airways
Deal found 15/4£654
Wed 12/814:33
PIA
-
LHR
1 stop11h 57m
United Airlines
Wed 19/817:40
LHR
-
PIA
2 stops29h 16m
United Airlines
Deal found 14/4£657
Wed 12/810:06
PIA
-
LHR
1 stop20h 09m
British Airways
Wed 19/812:15
LHR
-
PIA
1 stop11h 34m
British Airways
Deal found 17/4£660
Wed 12/812:20
PIA
-
LHR
1 stop16h 35m
Multiple Airlines
Wed 19/811:10
LHR
-
PIA
1 stop18h 11m
Multiple Airlines
Deal found 15/4£663

Find flight deals from Peoria to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Peoria (PIA) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 19 April 2026.

Round-trip from

£647

One-way from

£243

Popular in

December

Cheapest in

September

Average price

£606
United Airlines
  • United Airlines
  • 23/8-15/9
  • 3 total stops
  • 38h 19m total
  • Peoria to London
Search Deals
British Airways
  • British Airways
  • 23/8
  • 1 total stop
  • 18h 24m total
  • Peoria to London
Search Deals
Highest demand for flights based on searches. 25% potential increase in price (£208 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 12% potential price decrease (£65 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Peoria to Heathrow 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 April 2026.
Use the filters below to find and compare flights from Peoria to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Wed 12/8

14:33-08:30

1 stop11h 57m

London Heathrow

Wed 19/8

17:40-16:56

2 stops29h 16m

£657

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Wed 12/8

12:20-10:55

1 stop16h 35m

London Heathrow

Wed 19/8

11:10-23:21

1 stop18h 11m

£663
Fastest return journey

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Thu 27/8

13:21-08:30

1 stop13h 09m

London Heathrow

Sun 30/8

14:05-22:52

2 stops14h 47m

£845

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Sun 26/7

09:48-06:50

1 stop15h 02m

London Heathrow

Thu 30/7

15:15-23:59

1 stop14h 44m

£847

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Tue 2/6

14:39-11:55

1 stop15h 16m

London Heathrow

Tue 9/6

06:50-19:26

2 stops18h 36m

£964

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Fri 29/5

08:20-06:30

2 stops16h 10m

London Heathrow

Fri 5/6

06:50-16:58

2 stops16h 08m

£1,052
Cheapest one-way

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Sun 23/8

10:06-10:30

1 stop18h 24m

£243
Fastest single journey

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Tue 15/9

18:33-11:15

1 stop10h 42m

£243

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Sat 18/7

19:18-06:50

1 stop29h 32m

£251

Flights are sorted by cheapest return flights first.

Deals found on 14/4

Sorted by cheapest first

Best time to book a flight from Peoria to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Peoria 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.

Related info for your journey

Find useful and relevant information for your journey from Peoria to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Peoria to London Heathrow?

    Most people fly from Greater Peoria (PIA) if they book a flight from Peoria to London Heathrow. On average, Greater Peoria has 0 outbound flights to London Heathrow per day from 0 airlines. Greater Peoria is conveniently located just 6.0 mi from Peoria’s city center.

  • How long is the flight from Peoria, Illinois to London Heathrow Airport?

    United Airlines can get you from Peoria, Illinois to London Heathrow Airport in just under 11h 57m. Your travel time can differ by up to . Peoria, Illinois and London Heathrow Airport are separated by a distance of 4069 mi.

  • Can I find deals for flights from Peoria to Heathrow that include hotel bookings?

    Yes. In addition to deals on Peoria to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Peoria to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Peoria to Heathrow.

  • Can I find deals for business class flights from Peoria to Heathrow?

    Yes. Cheapflights offers flight deals from Peoria to Heathrow 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Northampton
Hounslow
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Watford
Kingston upon Thames
Romford
Eastbourne
Swindon
Chelmsford
Ipswich
Southend-on-Sea

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Can Cheapflights notify me if prices for flights from Peoria to Heathrow become cheaper?

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