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Cheap flights from Peoria, Illinois to London Heathrow Airport from £339

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 22/8. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — LHR
9 Jul — 16 Jul1
1 adult

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 4 July 2025.

Round-trip from

£454

One-way from

£339

Popular in

December

Cheapest in

October

Average price

£849
British Airways
  • British Airways
  • 19/8-26/8
  • 3 total stops
  • 27h 50m total
  • Peoria to London
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British Airways
  • British Airways
  • 22/8
  • 1 total stop
  • 10h 15m total
  • Peoria to London
Search Deals
Highest demand for flights based on searches. 32% potential increase in price (£263 potential increase over avg. return price).
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Cheapest flight prices on average. 7% potential price decrease (£40 potential savings vs. average return price).
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Average for round-trip flights in July 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 4 July 2025.

Tue 19/818:39PIA - LHR
1 stop9h 51mBritish Airways
Tue 26/806:10LHR - PIA
2 stops17h 59mBritish Airways
Deal found 3/7£454
Tue 19/817:19PIA - LHR
2 stops31h 11mUnited Airlines
Tue 26/809:30LHR - PIA
2 stops30h 43mUnited Airlines
Deal found 2/7£462
Sun 10/810:07PIA - LHR
1 stop14h 43mAmerican Airlines
Tue 19/813:10LHR - PIA
1 stop14h 45mAmerican Airlines
Deal found 3/7£473
Fri 17/1017:20PIA - LHR
2 stops21h 25mLufthansa
Mon 20/1019:10LHR - PIA
2 stops26h 09mLufthansa
Deal found 3/7£519

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 4 July 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

Tue 19/8

18:39-10:30

1 stop9h 51m

London Heathrow

Tue 26/8

06:10-18:09

2 stops17h 59m

£454

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Tue 19/8

17:19-06:30

2 stops31h 11m

London Heathrow

Tue 26/8

09:30-10:13

2 stops30h 43m

£462

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Sun 10/8

10:07-06:50

1 stop14h 43m

London Heathrow

Tue 19/8

13:10-21:55

1 stop14h 45m

£473

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Fri 17/10

17:20-20:45

2 stops21h 25m

London Heathrow

Mon 20/10

19:10-15:19

2 stops26h 09m

£519

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Sat 16/8

18:54-20:20

3 stops43h 26m

London Heathrow

Sat 23/8

15:50-15:18

3 stops29h 28m

£1,729

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Fri 22/8

20:00-12:15

1 stop10h 15m

£339

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Fri 22/8

10:49-05:55

2 stops13h 06m

£344

Flights are sorted by cheapest return flights first.

Deals found on 2/7

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.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 4 July 2025.
Read through reviews of airlines operating flights from Peoria to London Heathrow Airport, such as United Airlines, American Airlines, andLufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,844 reviews
Check prices

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,844 reviews
United Airlines
7.4
Good
8,844 reviews
Check prices

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,844 reviews
Check prices

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Lufthansa
6.8
Okay
7,207 reviews
United Airlines
7.4
Good
8,844 reviews
Check prices

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
British Airways
6.6
Okay
7,093 reviews
United Airlines
7.4
Good
8,844 reviews
Check prices

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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.

  • What are the cheapest airlines flying from Peoria, Illinois to London Heathrow Airport round-trip?

    British Airways, at £454, was found to be the cheapest airline from Peoria, Illinois to London Heathrow Airport.Alternate airlines flying return to your destination include United Airlines and American Airlines. You may be able to fly from Peoria, Illinois to London Heathrow Airport for 40% less than the average price by searching for these airlines.

  • 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 Peoria?

Book flights to Peoria if you plan to visit one of these locations
Hounslow
Croydon
Milton Keynes
Deal
Northampton
Gatwick
Luton
Slough
Wembley
Crawley
Eastbourne
Ilford
Hayes
Folkestone
Southend-on-Sea
Watford
Ipswich
Winchester
Swindon
Maidstone

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