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Cheap flights from Peoria, Illinois to London Heathrow Airport from £526

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/10. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — LHR
18 Oct — 25 Oct1
1 adult
1 adult, Economy

Cheap 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 18 September 2025.

Round-trip from

£526

Popular in

December

Cheapest in

March

Average price

£623
British Airways
  • British Airways
  • 17/10-23/10
  • 2 total stops
  • 28h 16m total
  • Peoria to London
Search Deals
Highest demand for flights based on searches. 29% potential increase in price (£221 potential increase over avg. return price).
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Cheapest flight prices on average. 5% potential price decrease (£25 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Find flight deals from Peoria to Heathrow

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 18 September 2025.

Fri 17/1020:10PIA - LHR
1 stop10h 05mBritish Airways
Thu 23/1011:10LHR - PIA
1 stop18h 11mBritish Airways
Deal found 16/9£526
Fri 17/1016:10PIA - LHR
1 stop10h 55mAmerican Airlines
Fri 24/1015:10LHR - PIA
1 stop14h 05mAmerican Airlines
Deal found 17/9£527
Wed 29/1016:51PIA - LHR
1 stop12h 09mAmerican Airlines
Wed 5/1111:45LHR - PIA
1 stop17h 43mAmerican Airlines
Deal found 17/9£537
Wed 29/1010:51PIA - LHR
1 stop14h 04mUnited Airlines
Wed 5/1113:00LHR - PIA
2 stops27h 16mUnited Airlines
Deal found 17/9£539
Fri 17/1006:00PIA - LHR
2 stops18h 30mUnited Airlines
Fri 24/1014:05LHR - PIA
2 stops32h 38mUnited Airlines
Deal found 16/9£570
Fri 31/1010:51PIA - LHR
2 stops15h 39mUnited Airlines
Fri 7/1113:25LHR - PIA
2 stops33h 15mUnited Airlines
Deal found 16/9£574
Fri 31/1007:00PIA - LHR
1 stop18h 50mAmerican Airlines
Fri 7/1109:55LHR - PIA
1 stop12h 45mAmerican Airlines
Deal found 16/9£574
Fri 17/1006:00PIA - LHR
2 stops18h 30mUnited Airlines
Thu 23/1006:55LHR - PIA
2 stops21h 20mUnited Airlines
Deal found 16/9£576
Fri 17/1020:10PIA - LHR
1 stop10h 05mBritish Airways
Fri 24/1006:15LHR - PIA
2 stops19h 25mBritish Airways
Deal found 17/9£641

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 18 September 2025.
Use the filters below to find and compare flights from Peoria to London Heathrow Airport that are best for you.

Fly from

Peoria

Fly to

Heathrow

Route

Depart

Return

Price

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Fri 17/10

20:10-12:15

1 stop10h 05m

London Heathrow

Thu 23/10

11:10-23:21

1 stop18h 11m

£526

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Fri 17/10

16:10-09:05

1 stop10h 55m

London Heathrow

Fri 24/10

09:15-16:08

1 stop12h 53m

£526

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Wed 29/10

10:51-05:55

1 stop14h 04m

London Heathrow

Wed 5/11

13:00-10:16

2 stops27h 16m

£539

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Fri 17/10

06:00-06:30

2 stops18h 30m

London Heathrow

Fri 24/10

14:05-16:43

2 stops32h 38m

£570

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Fri 31/10

10:51-07:30

2 stops15h 39m

London Heathrow

Fri 7/11

13:25-16:40

2 stops33h 15m

£574

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Fri 31/10

07:00-06:50

1 stop18h 50m

London Heathrow

Fri 7/11

09:55-16:40

1 stop12h 45m

£574

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Fri 17/10

06:00-06:30

2 stops18h 30m

London Heathrow

Thu 23/10

06:55-22:15

2 stops21h 20m

£576

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Fri 17/10

20:10-12:15

1 stop10h 05m

London Heathrow

Fri 24/10

06:15-19:40

2 stops19h 25m

£641

Flights are sorted by cheapest return flights first.

Deals found on 16/9

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?

    British Airways, American Airlines, and United Airlines can get you from Peoria, Illinois to London Heathrow Airport in just under 10h 05m. Your travel time can differ by up to 3h 59m. Peoria, Illinois and London Heathrow Airport are separated by a distance of 4069 mi. This flight may include one or multiple stops.

  • 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.

  • What is the cheapest month to book a flight from Peoria, Illinois to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Peoria, Illinois to London Heathrow Airport (average of £112). Flying from Peoria, Illinois to London Heathrow Airport in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
Croydon
Hounslow
Slough
Gatwick
Northampton
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Winchester
Chichester
Ipswich
Swindon
Dartford
Guildford
Brentford

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