Cheap flights from London Heathrow Airport to Knoxville from £576

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TYS
4 Dec — 11 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London Heathrow to Knoxville McGhee Tyson are usually found in September or November, booked 66 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 4 November 2025.

Round-trip from

£576

Popular in

August

Cheapest in

September

Average price

£543
United Airlines
  • United Airlines
  • 9/12-16/12
  • 4 total stops
  • 49h 23m total
  • London to Knoxville
Highest demand for flights based on searches. 10% potential increase in price (£62 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£15 potential savings vs. average return price).
Average for round-trip flights in November 2025

Find flight deals from Heathrow to Knoxville

Enter your travel dates to find the best prices.

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 4 November 2025.

Tue 9/1209:00LHR - TYS
2 stops30h 13mUnited Airlines
Tue 16/1207:00TYS - LHR
2 stops19h 10mUnited Airlines
Deal found 2/11£576
Tue 2/1206:50LHR - TYS
2 stops17h 39mUnited Airlines
Tue 9/1219:25TYS - LHR
1 stop10h 25mUnited Airlines
Deal found 3/11£581
Tue 2/1210:15LHR - TYS
1 stop15h 45mBritish Airways
Tue 9/1218:29TYS - LHR
1 stop10h 56mBritish Airways
Deal found 3/11£585
Tue 9/1211:05LHR - TYS
1 stop17h 13mVirgin Atlantic
Tue 16/1215:57TYS - LHR
1 stop10h 53mVirgin Atlantic
Deal found 2/11£600
Tue 25/1114:45LHR - TYS
1 stop13h 09mBritish Airways
Mon 8/1214:58TYS - LHR
1 stop14h 27mBritish Airways
Deal found 3/11£601
Tue 9/1206:30LHR - TYS
2 stops18h 35mDelta
Tue 16/1215:57TYS - LHR
1 stop10h 53mDelta
Deal found 2/11£609
Mon 1/1218:00LHR - TYS
2 stops24h 17mUnited Airlines
Mon 8/1210:50TYS - LHR
2 stops14h 50mUnited Airlines
Deal found 3/11£610
Wed 26/1110:45LHR - TYS
1 stop13h 17mVirgin Atlantic
Thu 4/1214:37TYS - LHR
1 stop12h 13mVirgin Atlantic
Deal found 2/11£614
Tue 25/1108:55LHR - TYS
1 stop12h 56mVirgin Atlantic
Sun 30/1117:36TYS - LHR
1 stop31h 49mVirgin Atlantic
Deal found 3/11£615
Wed 26/1106:45LHR - TYS
2 stops19h 18mBritish Airways
Thu 4/1210:55TYS - LHR
1 stop14h 40mBritish Airways
Deal found 2/11£616
Mon 17/1110:45LHR - TYS
1 stop13h 17mVirgin Atlantic
Sat 6/1215:50TYS - LHR
2 stops58h 15mVirgin Atlantic
Deal found 3/11£620
Tue 25/1106:30LHR - TYS
2 stops17h 32mDelta
Mon 8/1219:59TYS - LHR
1 stop10h 41mDelta
Deal found 3/11£623

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 4 November 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

Tue 9/12

09:00-10:13

2 stops30h 13m

Knoxville McGhee Tyson

Tue 16/12

07:00-07:10

2 stops19h 10m

£576

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 2/12

06:50-19:29

2 stops17h 39m

Knoxville McGhee Tyson

Tue 9/12

19:25-10:50

1 stop10h 25m

£581

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 2/12

10:15-21:00

1 stop15h 45m

Knoxville McGhee Tyson

Tue 9/12

18:29-10:25

1 stop10h 56m

£585

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 9/12

06:30-20:05

2 stops18h 35m

Knoxville McGhee Tyson

Tue 16/12

15:57-07:50

1 stop10h 53m

£609

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Mon 1/12

18:00-13:17

2 stops24h 17m

Knoxville McGhee Tyson

Mon 8/12

13:52-07:55

1 stop13h 03m

£610

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Fri 6/3

07:40-19:04

2 stops16h 24m

Knoxville McGhee Tyson

Tue 10/3

13:53-05:55

1 stop12h 02m

£614

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 25/11

08:55-16:51

1 stop12h 56m

Knoxville McGhee Tyson

Sun 30/11

17:36-06:25

1 stop31h 49m

£615

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Wed 26/11

06:45-21:03

2 stops19h 18m

Knoxville McGhee Tyson

Thu 4/12

10:55-06:35

1 stop14h 40m

£616

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Mon 17/11

10:45-19:02

1 stop13h 17m

Knoxville McGhee Tyson

Sat 6/12

15:50-07:05

2 stops58h 15m

£620

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Wed 26/11

06:30-16:51

2 stops15h 21m

Knoxville McGhee Tyson

Thu 4/12

14:37-08:45

2 stops13h 08m

£623

Flights are sorted by cheapest return flights first.

Deals found on 2/11

Showing 1-10 of 14 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 31 October 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 66 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of £389). Flying from London Heathrow Airport to Knoxville in July is currently the most expensive (average of £572). 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 4 November 2025.

It’s typically best to fly out from London Heathrow Airport to Knoxville in the evening. Doing so could potentially save you 11% on the flight price compared to flying in the morning, which is usually more expensive.

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 4 November 2025.
Read reviews from past customers who have flown with Finnair, Virgin Atlantic, 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.

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

Overall

7.6

Crew

8.1

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.

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

Overall

7.6

Crew

8.1

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.

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

Overall

7.6

Crew

8.1

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.

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

Overall

7.6

Crew

8.1

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.

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

Overall

7.6

Crew

8.1

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.

Entertainment

6.9

Boarding

7.6

Comfort

7.4

Food

6.7

Overall

7.6

Crew

8.1

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?

    United Airlines, British Airways, and Delta can get you from London Heathrow Airport to Knoxville in just under 15h 45m. Your travel time can differ by up to 14h 28m. 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 £467, 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 British Airways and United Airlines - these airlines can fly you to your destination from £486 and £491, respectively. These flights start at 32% 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 United Airlines (£763), Lufthansa (£1,729), and WestJet (£1,904).

  • 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of £389). Flying from London Heathrow Airport to Knoxville in July is currently the most expensive (average of £572). 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
Cherokee

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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 4 November 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£467Average£616FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£486Average£615FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£491Average£675FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£509Average£632FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£518Average£637FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IberiaCheapest£576Average£1,005FlexibilityNo cancel feeOn-time77%
Search Iberia flights
American AirlinesCheapest£600Average£742FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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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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