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Cheap flights from Peoria, Illinois to London Heathrow Airport from £355

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
5 May — 12 May1
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 30 April 2025.

Round-trip from

£512

One-way from

£355

Popular in

December

Cheapest in

March

Average price

£639
British Airways
  • British Airways
  • 19/8-26/8
  • 3 total stops
  • 28h 08m total
  • Peoria to London
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American Airlines
  • American Airlines
  • 22/8
  • 1 total stop
  • 14h 44m total
  • Peoria to London
Search Deals
Highest demand for flights based on searches. 32% potential increase in price (£272 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£42 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 30 April 2025.

Tue 19/818:38PIA - LHR
1 stop10h 17mBritish Airways
Tue 26/811:30LHR - PIA
2 stops17h 51mBritish Airways
Deal found 30/4£512
Wed 20/815:55PIA - LHR
1 stop10h 25mUnited Airlines
Tue 26/809:30LHR - PIA
2 stops30h 43mUnited Airlines
Deal found 30/4£541
Tue 19/816:15PIA - LHR
1 stop14h 30mAmerican Airlines
Tue 26/809:15LHR - PIA
1 stop14h 53mAmerican Airlines
Deal found 29/4£558
Sun 11/516:35PIA - LHR
3 stops45h 45mMultiple Airlines
Wed 21/514:10LHR - PIA
2 stops35h 49mMultiple Airlines
Deal found 29/4£1,169

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 30 April 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

16:15-12:45

1 stop14h 30m

London Heathrow

Tue 26/8

09:15-18:08

1 stop14h 53m

£558

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Wed 20/8

20:00-06:55

1 stop28h 55m

London Heathrow

Mon 25/8

19:25-18:08

2 stops28h 43m

£559

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Tue 19/8

10:49-10:00

2 stops17h 11m

London Heathrow

Tue 26/8

14:05-10:13

2 stops26h 08m

£570

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Sun 11/5

16:35-20:20

3 stops45h 45m

London Heathrow

Wed 21/5

14:10-19:59

2 stops35h 49m

£1,169

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Fri 22/8

10:06-06:50

1 stop14h 44m

£355

PeoriaLondon

PIA - LHR

PIALHR

Greater Peoria

Fri 22/8

08:10-05:55

2 stops15h 45m

£370

Flights are sorted by cheapest return flights first.

Deals found on 30/4

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

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 30 April 2025.
Read reviews from past customers who have flown United Airlines, American Airlines and British Airways from Peoria to London. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,696 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

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
8,696 reviews
United Airlines
7.4
Good
8,696 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

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
8,696 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

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
6,842 reviews
United Airlines
7.4
Good
8,696 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

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 £512, 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 33% 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
Deal
Hounslow
Milton Keynes
Gatwick
Luton
Slough
Croydon
Eastbourne
Northampton
Southend-on-Sea
Ilford
Crawley
Hayes
Ipswich
Watford
Wembley
Swindon
Folkestone
Maidstone
Winchester

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