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Cheap flights from Peoria, Illinois to London Heathrow Airport from £310

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 13/4. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — LHR
1 Apr — 8 Apr1
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 2 March 2026.

Sun 1/313:25
PIA
-
LHR
1 stop10h 30m
United Airlines
Tue 10/306:50
LHR
-
PIA
2 stops19h 31m
United Airlines
Deal found 28/2£483
Wed 1/406:30
PIA
-
LHR
2 stops21h 45m
United Airlines
Wed 8/407:30
LHR
-
PIA
2 stops21h 27m
United Airlines
Deal found 27/2£501
Tue 14/413:20
PIA
-
LHR
2 stops14h 40m
United Airlines
Tue 21/407:25
LHR
-
PIA
2 stops17h 28m
United Airlines
Deal found 28/2£504
Sun 1/311:09
PIA
-
LHR
1 stop15h 26m
American Airlines
Tue 10/312:35
LHR
-
PIA
1 stop15h 50m
American Airlines
Deal found 28/2£505
Wed 12/808:10
PIA
-
LHR
2 stops20h 05m
United Airlines
Wed 19/814:05
LHR
-
PIA
2 stops29h 36m
United Airlines
Deal found 26/2£506
Mon 7/920:30
PIA
-
LHR
2 stops14h 10m
United Airlines
Wed 16/907:25
LHR
-
PIA
2 stops15h 31m
United Airlines
Deal found 28/2£517
Tue 14/413:22
PIA
-
LHR
1 stop11h 28m
British Airways
Tue 21/411:10
LHR
-
PIA
1 stop13h 24m
British Airways
Deal found 28/2£519

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 2 March 2026.

Round-trip from

£501

One-way from

£310

Popular in

December

Cheapest in

September

Average price

£584
United Airlines
  • United Airlines
  • 1/4-8/4
  • 4 total stops
  • 43h 12m total
  • Peoria to London
Search Deals
United Airlines
  • United Airlines
  • 13/4
  • 1 total stop
  • 19h 05m total
  • Peoria to London
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (£227 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 12% potential price decrease (£68 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 2 March 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

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Wed 1/4

06:30-10:15

2 stops21h 45m

London Heathrow

Wed 8/4

17:50-18:53

2 stops31h 03m

£502

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Mon 27/4

13:20-06:45

1 stop11h 25m

London Heathrow

Wed 13/5

08:40-00:06

2 stops21h 26m

£502

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Wed 12/8

08:25-06:45

1 stop16h 20m

London Heathrow

Wed 19/8

17:40-19:25

2 stops31h 45m

£512

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Mon 30/3

19:28-11:45

1 stop10h 17m

London Heathrow

Wed 8/4

11:05-21:13

1 stop16h 08m

£523

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Mon 13/4

10:40-11:45

1 stop19h 05m

£310

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Mon 27/4

10:40-11:45

1 stop19h 05m

£310

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Sat 18/7

17:33-06:35

2 stops31h 02m

£317

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Thu 23/7

13:21-09:55

2 stops14h 34m

£345

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Thu 23/7

14:39-10:15

2 stops13h 36m

£357

Flights are sorted by cheapest return flights first.

Deals found on 1/3

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 21h 45m. 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
Croydon
Wembley
Luton
Northampton
Gatwick
Slough
Hounslow
Ilford
Hayes
Brentford
Colchester
Watford
Guildford
Kingston upon Thames
Eastbourne
Ipswich
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Swindon
Bedford

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Can Cheapflights find flights from Peoria to Heathrow with no change fees?

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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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