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Cheap flights from London Heathrow Airport to Knoxville from £446

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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TYS
30 Aug — 6 Sep1
1 adult

Cheapflights Tip: The best prices from London Heathrow to Knoxville McGhee Tyson are usually found in March or November, booked 80 days in advance, depart on a Monday or Wednesday and return on a Tuesday

Cheap flight deals from Heathrow to Knoxville

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Knoxville (TYS). 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 25 August 2025.

Round-trip from

£502

One-way from

£446

Popular in

August

Cheapest in

March

Average price

£994
Air Canada
  • Air Canada
  • 24/11-27/11
  • 4 total stops
  • 31h 54m total
  • London to Knoxville
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Aer Lingus
  • Aer Lingus
  • 5/11
  • 2 total stops
  • 18h 34m total
  • London to Knoxville
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Highest demand for flights based on searches. 16% potential increase in price (£101 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£22 potential savings vs. average return price).
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Average for round-trip flights in August 2025
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Find flight deals from Heathrow to Knoxville

Cheapest flights from Heathrow to Knoxville
Explore the most affordable flight options available from Heathrow to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 August 2025.

Mon 24/1113:25LHR - TYS
2 stops15h 34mAir Canada
Thu 27/1109:50TYS - LHR
2 stops16h 20mAir Canada
Deal found 24/8£502
Mon 24/1107:40LHR - TYS
1 stop20h 15mLufthansa
Sat 29/1119:20TYS - LHR
1 stop10h 30mLufthansa
Deal found 24/8£506
Sat 22/1113:25LHR - TYS
2 stops35h 55mAir Canada
Fri 28/1105:45TYS - LHR
2 stops20h 25mAir Canada
Deal found 24/8£507
Mon 24/1113:25LHR - TYS
2 stops15h 34mAir Canada
Fri 28/1105:45TYS - LHR
2 stops20h 25mAir Canada
Deal found 24/8£517
Sat 22/1111:45LHR - TYS
1 stop12h 48mBritish Airways
Sun 30/1120:04TYS - LHR
1 stop30h 16mBritish Airways
Deal found 24/8£528
Mon 24/1106:30LHR - TYS
2 stops18h 30mDelta
Fri 28/1115:51TYS - LHR
1 stop12h 09mDelta
Deal found 24/8£532
Tue 25/1112:30LHR - TYS
1 stop12h 36mDelta
Thu 27/1117:36TYS - LHR
1 stop31h 49mDelta
Deal found 24/8£545
Thu 27/1115:45LHR - TYS
1 stop34h 36mBritish Airways
Sun 30/1117:52TYS - LHR
1 stop12h 43mBritish Airways
Deal found 24/8£558
Tue 2/909:30LHR - TYS
2 stops16h 26mUnited Airlines
Sun 7/919:25TYS - LHR
1 stop10h 15mUnited Airlines
Deal found 23/8£562
Tue 9/913:30LHR - TYS
1 stop12h 44mBritish Airways
Sat 13/919:45TYS - LHR
1 stop30h 55mBritish Airways
Deal found 24/8£572

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Knoxville 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 25 August 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Knoxville that are best for you.

Fly from

Heathrow

Fly to

Knoxville

Route

Depart

Return

Price

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Mon 24/11

13:25-23:59

2 stops15h 34m

Knoxville McGhee Tyson

Thu 27/11

09:50-07:10

2 stops16h 20m

£502

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Wed 26/11

10:25-20:33

1 stop15h 08m

Knoxville McGhee Tyson

Sat 29/11

19:20-10:50

1 stop10h 30m

£506

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 25/11

16:20-23:59

1 stop12h 39m

Knoxville McGhee Tyson

Sat 29/11

19:20-10:50

1 stop10h 30m

£506

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Mon 24/11

07:40-22:55

1 stop20h 15m

Knoxville McGhee Tyson

Sat 29/11

19:20-10:50

1 stop10h 30m

£506

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sat 22/11

13:25-20:20

2 stops35h 55m

Knoxville McGhee Tyson

Fri 28/11

05:45-07:10

2 stops20h 25m

£507

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Mon 24/11

13:25-23:59

2 stops15h 34m

Knoxville McGhee Tyson

Fri 28/11

05:45-07:10

2 stops20h 25m

£517

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sun 23/11

14:45-22:54

1 stop13h 09m

Knoxville McGhee Tyson

Sun 30/11

20:04-07:20

1 stop30h 16m

£528

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sat 22/11

11:45-19:33

1 stop12h 48m

Knoxville McGhee Tyson

Sun 30/11

20:04-07:20

1 stop30h 16m

£528

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Mon 24/11

06:30-20:00

2 stops18h 30m

Knoxville McGhee Tyson

Fri 28/11

15:51-09:00

1 stop12h 09m

£532

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 25/11

12:30-20:06

1 stop12h 36m

Knoxville McGhee Tyson

Thu 27/11

17:36-06:25

1 stop31h 49m

£545

Flights are sorted by cheapest return flights first.

Deals found on 23/8

Showing 1-10 of 14 results
1
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Best time to book a flight from Heathrow to Knoxville

Have a flexible travel schedule? Discover the best time to fly to Knoxville from Heathrow 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 London Heathrow Airport to Knoxville

How far ahead should I book a flight from London Heathrow Airport to Knoxville?

Use this chart to determine the optimal time to book a return flight from Heathrow to Knoxville. Price data was last updated on 22 August 2025.

The price you pay for your flight from London Heathrow Airport to Knoxville may vary depending on when you book. For the best chance of a lower fare, look to book 80 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from London Heathrow Airport to Knoxville?

Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of £720). Flying from London Heathrow Airport to Knoxville in July is currently the most expensive (average of £1,119). 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.

What is the cheapest time of day to fly from LHR to TYS?

Find hourly flight availability from Heathrow to Knoxville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 25 August 2025.

It’s typically best to fly out from London Heathrow Airport to Knoxville in the evening. Doing so could potentially save you 12% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from London Heathrow Airport to Knoxville?

Use this chart to determine the cheapest time to fly return from Heathrow to Knoxville. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London Heathrow Airport to Knoxville flight should consider departing on Sunday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Knoxville

Get insights into the airlines that provide service to Knoxville. 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 Knoxville. Reviews last updated 25 August 2025.
Read reviews from past customers who have flown with Finnair, United Airlines, andVirgin Atlantic from London Heathrow Airport to Knoxville. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,320 reviews
Check prices

Boarding

7.6

Comfort

7.5

Food

6.7

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,320 reviews
Finnair
7.6
Good
1,320 reviews
Check prices

Boarding

7.6

Comfort

7.5

Food

6.7

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
United Airlines
7.4
Good
8,940 reviews
Finnair
7.6
Good
1,320 reviews
Check prices

Boarding

7.6

Comfort

7.5

Food

6.7

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Virgin Atlantic
7.4
Good
658 reviews
Finnair
7.6
Good
1,320 reviews
Check prices

Boarding

7.6

Comfort

7.5

Food

6.7

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Lufthansa
6.8
Okay
7,359 reviews
Finnair
7.6
Good
1,320 reviews
Check prices

Boarding

7.6

Comfort

7.5

Food

6.7

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
British Airways
6.7
Okay
7,305 reviews
Finnair
7.6
Good
1,320 reviews
Check prices

Boarding

7.6

Comfort

7.5

Food

6.7

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Knoxville. 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 into for flights to Knoxville from London Heathrow?

    If you book a flight to Knoxville from London Heathrow, you will be flying to McGhee Tyson, which is the city’s only airport. Knoxville McGhee Tyson (TYS) is located 11.3 mi from the center of Knoxville. There are 0 flights from London Heathrow to McGhee Tyson per day from 7 different airlines.

  • How long is the flight from London Heathrow Airport to Knoxville?

    Air Canada, Lufthansa, and United Airlines can get you from London Heathrow Airport to Knoxville in just under 12h 39m. Your travel time can differ by up to 2h 55m. The distance from London Heathrow Airport to Knoxville is about 4076 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    Currently priced at £463, Lufthansa will fly you from London Heathrow Airport to Knoxville and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Finnair - these airlines can fly you to your destination from £486 and £498, respectively. These flights start at 31% lower than the current average price 3 months from now.

  • Can I find deals for flights from Heathrow to Knoxville that include hotel bookings?

    Yes. In addition to deals on Heathrow to Knoxville flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Knoxville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Knoxville.

  • Can I find deals for business class flights from Heathrow to Knoxville?

    Yes. Cheapflights offers flight deals from Heathrow to Knoxville 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 London Heathrow Airport to Knoxville?

    Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of £720). Flying from London Heathrow Airport to Knoxville in July is currently the most expensive (average of £1,119). 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 Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
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Top 7 airlines flying from Heathrow to Knoxville

Discover the top 7 airlines that operate flights from Heathrow to Knoxville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 25 August 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£463Average£643FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£486Average£696FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£498Average£593FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£506Average£619FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£507Average£633FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IberiaCheapest£559Average£976FlexibilityNo cancel feeOn-time77%
Search Iberia flights
American AirlinesCheapest£583Average£720FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

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

Yes, Cheapflights offers price alerts on Heathrow to Knoxville flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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