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Cheap flights from London Heathrow Airport to Knoxville from £395

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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TYS
22 Jul — 29 Jul1
1 adult

Cheapflights Tip: The best prices from London Heathrow to Knoxville McGhee Tyson are usually found in November or March, 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 17 July 2025.

Round-trip from

£539

One-way from

£395

Popular in

August

Cheapest in

November

Average price

£875
British Airways
  • British Airways
  • 22/9-27/9
  • 2 total stops
  • 46h 21m total
  • London to Knoxville
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11/9
  • 11/9
  • 3 total stops
  • 33h 55m total
  • London to Knoxville
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Highest demand for flights based on searches. 14% potential increase in price (£86 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£15 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 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 17 July 2025.

Mon 22/913:10LHR - TYS
1 stop12h 50mBritish Airways
Sat 27/916:49TYS - LHR
1 stop33h 31mBritish Airways
Deal found 15/7£539
Sat 30/808:45LHR - TYS
2 stops18h 52mUnited Airlines
Sat 6/914:30TYS - LHR
1 stop11h 25mUnited Airlines
Deal found 15/7£562
Fri 19/908:40LHR - TYS
2 stops17h 39mDelta
Fri 26/912:01TYS - LHR
2 stops15h 49mDelta
Deal found 15/7£572
Wed 6/811:20LHR - TYS
1 stop17h 39mVirgin Atlantic
Thu 14/811:49TYS - LHR
2 stops13h 31mVirgin Atlantic
Deal found 15/7£579
Sat 30/811:05LHR - TYS
1 stop16h 32mLufthansa
Sat 6/910:54TYS - LHR
1 stop14h 26mLufthansa
Deal found 15/7£589
Sat 30/814:05LHR - TYS
2 stops14h 52mMultiple Airlines
Sat 6/909:55TYS - LHR
3 stops15h 35mMultiple Airlines
Deal found 15/7£595
Thu 25/911:45LHR - TYS
2 stops34h 18mKLM
Sun 5/1018:08TYS - LHR
2 stops17h 07mKLM
Deal found 14/7£629
Sat 20/914:05LHR - TYS
2 stops14h 52mAir Canada
Fri 26/919:26TYS - LHR
2 stops30h 04mAir Canada
Deal found 16/7£685
Thu 25/906:40LHR - TYS
3 stops21h 56mScandinavian Airlines
Tue 30/913:52TYS - LHR
2 stops22h 48mScandinavian Airlines
Deal found 14/7£721
Tue 19/808:50LHR - TYS
2 stops17h 23mAer Lingus
Tue 26/807:55TYS - LHR
2 stops19h 05mAer Lingus
Deal found 16/7£798

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 17 July 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 22/9

13:10-21:00

1 stop12h 50m

Knoxville McGhee Tyson

Sat 27/9

16:49-07:20

1 stop33h 31m

£539

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sat 30/8

08:45-20:56

2 stops17h 11m

Knoxville McGhee Tyson

Sat 6/9

10:54-06:55

2 stops15h 01m

£562

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Fri 19/9

08:40-21:19

2 stops17h 39m

Knoxville McGhee Tyson

Fri 26/9

12:01-08:50

2 stops15h 49m

£572

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Wed 6/8

11:20-23:59

1 stop17h 39m

Knoxville McGhee Tyson

Thu 14/8

11:49-06:20

2 stops13h 31m

£579

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sat 30/8

11:05-22:37

1 stop16h 32m

Knoxville McGhee Tyson

Sat 6/9

10:54-06:20

1 stop14h 26m

£589

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sat 30/8

14:05-23:57

2 stops14h 52m

Knoxville McGhee Tyson

Sat 6/9

09:55-06:30

3 stops15h 35m

£595

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Thu 25/9

11:45-17:03

2 stops34h 18m

Knoxville McGhee Tyson

Sun 5/10

18:08-16:15

2 stops17h 07m

£629

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sat 20/9

14:05-23:57

2 stops14h 52m

Knoxville McGhee Tyson

Fri 26/9

19:26-06:30

2 stops30h 04m

£685

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Thu 25/9

06:40-23:36

3 stops21h 56m

Knoxville McGhee Tyson

Tue 30/9

13:52-17:40

2 stops22h 48m

£721

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 19/8

08:50-21:13

2 stops17h 23m

Knoxville McGhee Tyson

Tue 26/8

07:55-08:00

2 stops19h 05m

£798

Flights are sorted by cheapest return flights first.

Deals found on 13/7

Showing 1-10 of 15 results
1
2

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 11 July 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 £1,130). 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 17 July 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 17 July 2025.
Read reviews from past customers who have flown with Delta, KLM, andUnited Airlines 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.
Delta
8.0
Very Good
7,957 reviews
Check prices

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very Good
7,957 reviews
Delta
8.0
Very Good
7,957 reviews
Check prices

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,373 reviews
Delta
8.0
Very Good
7,957 reviews
Check prices

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,863 reviews
Delta
8.0
Very Good
7,957 reviews
Check prices

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Virgin Atlantic
7.4
Good
655 reviews
Delta
8.0
Very Good
7,957 reviews
Check prices

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Scandinavian Airlines
7.3
Good
1,423 reviews
Delta
8.0
Very Good
7,957 reviews
Check prices

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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.

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

    Currently priced at £539, British Airways will fly you from London Heathrow Airport to Knoxville and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Delta - these airlines can fly you to your destination from £562 and £572, respectively. These flights start at 20% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from London Heathrow Airport to Knoxville one-way?

    The cheapet airlines for a one-way flight from London Heathrow Airport to Knoxville are Aer Lingus (£445), Lufthansa (£532), and Scandinavian Airlines (£2,747).

  • 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 £1,130). 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 17 July 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£491Average£704FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£494Average£629FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£510Average£640FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£510Average£616FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£512Average£627FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IberiaCheapest£564Average£985FlexibilityNo cancel feeOn-time77%
Search Iberia flights
American AirlinesCheapest£589Average£727FlexibilityNo 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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