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Cheap flights from Peoria, Illinois to London Heathrow Airport from £484

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/3. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — LHR
20 Dec — 27 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 20 November 2025.

Wed 3/1213:15PIA - LHR
2 stops11h 55mUnited Airlines
Sun 7/1206:50LHR - PIA
2 stops20h 41mUnited Airlines
Deal found 19/11£516
Wed 3/1213:15PIA - LHR
1 stop12h 40mLufthansa
Sun 7/1210:25LHR - PIA
1 stop17h 06mLufthansa
Deal found 19/11£539
Thu 20/1115:30PIA - LHR
1 stop10h 25mUnited Airlines
Wed 26/1113:25LHR - PIA
2 stops26h 51mUnited Airlines
Deal found 19/11£719
Sat 27/1217:19PIA - LHR
1 stop11h 56mLufthansa
Sat 3/108:45LHR - PIA
2 stops18h 54mLufthansa
Deal found 19/11£944
Sat 27/1210:00PIA - LHR
1 stop16h 15mAmerican Airlines
Sat 3/111:45LHR - PIA
1 stop18h 11mAmerican Airlines
Deal found 18/11£1,984

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 20 November 2025.

Round-trip from

£484

Popular in

June

Cheapest in

March

Average price

£611
United Airlines
  • United Airlines
  • 16/3-24/3
  • 4 total stops
  • 32h 26m total
  • Peoria to London
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£119 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£28 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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 20 November 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

Mon 16/3

10:40-05:55

1 stop14h 15m

London Heathrow

Tue 24/3

06:50-16:40

2 stops14h 50m

£484

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Wed 3/12

13:15-07:10

2 stops11h 55m

London Heathrow

Sun 7/12

06:50-21:31

2 stops20h 41m

£516

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Wed 3/12

13:15-07:55

1 stop12h 40m

London Heathrow

Sun 7/12

10:25-21:31

1 stop17h 06m

£539

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Fri 27/3

14:50-11:20

2 stops15h 30m

London Heathrow

Tue 31/3

14:05-12:36

2 stops28h 31m

£575

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Sun 4/1

17:19-15:50

2 stops16h 31m

London Heathrow

Sun 11/1

13:45-21:39

2 stops37h 54m

£581

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Sun 4/1

17:19-05:55

1 stop30h 36m

London Heathrow

Sun 11/1

10:25-21:39

1 stop17h 14m

£693

Flights are sorted by cheapest return flights first.

Deals found on 18/11

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 and Lufthansa can get you from Peoria, Illinois to London Heathrow Airport in just under 12h 40m. Your travel time can differ by up to 1h 35m. 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.

See more FAQs

Travelling to a place near London Heathrow Airport?

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Ilford
Wembley
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Millions of users choose and trust Cheapflights to book the best flight deals from Peoria to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

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