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Cheap flights from Peoria, Illinois to London Heathrow Airport from £294

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 8/2. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — LHR
28 Feb — 7 Mar1
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 29 January 2026.

Wed 4/210:45
PIA
-
LHR
1 stop15h 10m
United Airlines
Mon 9/213:45
LHR
-
PIA
2 stops37h 54m
United Airlines
Deal found 27/1£465
Wed 4/217:18
PIA
-
LHR
2 stops16h 32m
Lufthansa
Mon 9/219:30
LHR
-
PIA
2 stops27h 13m
Lufthansa
Deal found 27/1£470
Wed 1/406:30
PIA
-
LHR
1 stop18h 15m
United Airlines
Wed 8/408:40
LHR
-
PIA
2 stops38h 04m
United Airlines
Deal found 27/1£477
Wed 12/814:30
PIA
-
LHR
1 stop15h 15m
United Airlines
Wed 19/817:40
LHR
-
PIA
2 stops33h 06m
United Airlines
Deal found 27/1£487
Wed 12/810:06
PIA
-
LHR
1 stop16h 59m
British Airways
Wed 19/812:15
LHR
-
PIA
1 stop11h 34m
British Airways
Deal found 27/1£496
Thu 29/106:30
PIA
-
LHR
1 stop17h 25m
United Airlines
Mon 2/212:05
LHR
-
PIA
2 stops39h 34m
United Airlines
Deal found 26/1£500

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 29 January 2026.

Round-trip from

£477

One-way from

£294

Popular in

June

Cheapest in

February
United Airlines
  • United Airlines
  • 1/4-8/4
  • 3 total stops
  • 56h 19m total
  • Peoria to London
Search Deals
Lufthansa
  • Lufthansa
  • 8/2
  • 2 total stops
  • 21h 42m total
  • Peoria to London
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£110 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£25 potential savings vs. average return price).
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 29 January 2026.
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

Wed 1/4

06:30-06:45

1 stop18h 15m

London Heathrow

Wed 8/4

08:40-16:44

2 stops38h 04m

£477

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Wed 4/3

13:25-07:55

1 stop12h 30m

London Heathrow

Sun 8/3

06:50-20:21

2 stops19h 31m

£502

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Fri 13/2

10:46-06:40

2 stops13h 54m

London Heathrow

Tue 17/2

12:05-21:26

2 stops15h 21m

£519

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Wed 4/3

14:59-06:55

1 stop9h 56m

London Heathrow

Sun 8/3

14:10-23:25

1 stop14h 15m

£520

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Fri 17/4

17:25-11:45

1 stop12h 20m

London Heathrow

Sat 2/5

06:50-16:50

2 stops16h 00m

£549

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Sun 8/2

17:18-21:00

2 stops21h 42m

£294

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Sun 8/2

15:00-07:55

1 stop10h 55m

£296

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Sat 18/7

17:20-06:30

2 stops31h 10m

£307

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Sun 8/2

18:38-16:00

3 stops39h 22m

£405

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Sat 18/7

20:55-12:05

3 stops33h 10m

£1,499

Flights are sorted by cheapest return flights first.

Deals found on 27/1

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.

Cheapflights Insights

Everything you need to know about your flight from Peoria to London Heathrow Airport

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

Currently, February is the cheapest month in which you can book a flight from Peoria, Illinois to London Heathrow Airport (average of £438). Flying from Peoria, Illinois to London Heathrow Airport in June is currently the most expensive (average of £734). 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.

How much does it cost for a return flight from Peoria, Illinois to London Heathrow Airport?

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 18h 15m. 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.

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

    Currently, February is the cheapest month in which you can book a flight from Peoria, Illinois to London Heathrow Airport (average of £438). Flying from Peoria, Illinois to London Heathrow Airport in June is currently the most expensive (average of £734). 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
Luton
Croydon
Wembley
Northampton
Gatwick
Slough
Hounslow
Ilford
Brentford
Hayes
Watford
Colchester
Guildford
Swindon
Chelmsford
Bedford
Crawley
Kingston upon Thames
Eastbourne

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

Yes! Start tracking prices for Peoria to Heathrow flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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