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Cheap flights from Knoxville to London Heathrow Airport from £232

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 15/1. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — LHR
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Knoxville McGhee Tyson to London Heathrow are usually found in February or October, booked 85 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from Knoxville to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) 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 14 November 2025.

Round-trip from

£454

One-way from

£232

Popular in

June

Cheapest in

February

Average price

£693
Delta
  • Delta
  • 30/12-9/1
  • 2 total stops
  • 40h 47m total
  • Knoxville to London
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15/1
  • 15/1
  • 2 total stops
  • 45h 50m total
  • Knoxville to London
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£115 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 November 2025
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Find flight deals from Knoxville to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Knoxville to Heathrow
Explore the most affordable flight options available from Knoxville to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2025.

Tue 18/1114:41TYS - LHR
1 stop12h 09mKLM
Tue 25/1108:55LHR - TYS
1 stop15h 07mKLM
Deal found 11/11£454
Tue 30/1206:27TYS - LHR
1 stop19h 38mDelta
Fri 9/109:40LHR - TYS
2 stops15h 42mDelta
Deal found 12/11£457
Wed 12/1119:20TYS - LHR
2 stops15h 30mLufthansa
Wed 19/1111:10LHR - TYS
2 stops16h 45mLufthansa
Deal found 11/11£460
Wed 12/1113:52TYS - LHR
1 stop11h 03mUnited Airlines
Wed 19/1111:10LHR - TYS
2 stops16h 45mUnited Airlines
Deal found 11/11£469
Tue 18/1110:50TYS - LHR
2 stops15h 20mUnited Airlines
Tue 25/1106:50LHR - TYS
2 stops22h 09mUnited Airlines
Deal found 11/11£470
Tue 18/1115:53TYS - LHR
1 stop14h 47mDelta
Tue 25/1106:30LHR - TYS
2 stops17h 32mDelta
Deal found 12/11£470
Tue 30/1206:27TYS - LHR
1 stop19h 38mDelta
Sat 10/110:45LHR - TYS
1 stop32h 07mDelta
Deal found 12/11£473
Tue 18/1109:50TYS - LHR
2 stops16h 20mMultiple Airlines
Tue 25/1120:15LHR - TYS
2 stops53h 05mMultiple Airlines
Deal found 11/11£476
Sun 23/1105:45TYS - LHR
1 stop24h 05mUnited Airlines
Tue 16/1207:30LHR - TYS
2 stops16h 59mUnited Airlines
Deal found 12/11£477
Wed 12/1112:08TYS - LHR
1 stop13h 42mFinnair
Wed 19/1111:55LHR - TYS
1 stop17h 13mFinnair
Deal found 11/11£479

Cheapflights Fare Finder

 
Customise your flight search to find flights from Knoxville 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 14 November 2025.
Use the filters below to find and compare flights from Knoxville to London Heathrow Airport that are best for you.

Fly from

Knoxville

Fly to

Heathrow

Route

Depart

Return

Price

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 31/12

07:39-08:45

1 stop20h 06m

London Heathrow

Fri 9/1

20:00-12:09

1 stop21h 09m

£454

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Sun 23/11

05:35-11:40

1 stop25h 05m

London Heathrow

Tue 16/12

06:30-20:00

2 stops18h 30m

£470

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 31/12

09:30-08:05

1 stop17h 35m

London Heathrow

Sun 11/1

10:45-18:52

1 stop13h 07m

£473

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Tue 30/12

06:27-07:05

1 stop19h 38m

London Heathrow

Sat 10/1

10:45-13:52

1 stop32h 07m

£473

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Tue 30/12

10:02-06:25

1 stop15h 23m

London Heathrow

Sun 11/1

09:40-20:22

2 stops15h 42m

£476

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 31/12

09:30-08:05

1 stop17h 35m

London Heathrow

Sat 10/1

09:40-23:45

2 stops19h 05m

£476

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 31/12

09:50-11:20

2 stops20h 30m

London Heathrow

Fri 9/1

18:00-14:49

2 stops25h 49m

£483

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Sun 23/11

14:41-11:40

1 stop15h 59m

London Heathrow

Thu 18/12

08:55-18:52

1 stop14h 57m

£486

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 31/12

14:00-06:40

1 stop11h 40m

London Heathrow

Fri 9/1

07:25-16:53

1 stop14h 28m

£490

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Thu 15/1

10:00-12:50

2 stops45h 50m

£232

Flights are sorted by cheapest return flights first.

Deals found on 13/11

Showing 1-10 of 19 results
1
2

Best time to book a flight from Knoxville to Heathrow

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

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

Use this chart to determine the optimal time to book a return flight from Knoxville to Heathrow. Price data was last updated on 7 November 2025.

The price you pay for your flight from Knoxville to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 85 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 Knoxville to London Heathrow Airport?

Currently, July is the cheapest month in which you can book a flight from Knoxville to London Heathrow Airport (average of £405). Flying from Knoxville to London Heathrow Airport in June is currently the most expensive (average of £690). 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 TYS to LHR?

Find hourly flight availability from Knoxville to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 November 2025.

When flying from Knoxville to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 37% versus a flight in the morning.

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 14 November 2025.
Read reviews from past customers who have flown with Scandinavian Airlines from Knoxville to London Heathrow Airport. 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.
Scandinavian Airlines
7.4
Good
1,575 reviews
Check prices

Crew

8.0

Overall

7.4

Food

6.7

Comfort

7.3

Boarding

7.6

Entertainment

6.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

ATL - CPH

I asked for wheelchair assistance. When I got to Copenhagen, there was none. Luckily I found a robot type wheelchair that got me to my next gate. In Dusseldorf, there was no help at all. On the return trip, SAS bumped me and sent me to another airline without provision to get to my final destination. I had to make other arrangement to get home which was VERY expensive. I do not understand them, they treat Americans like trash.
Scandinavian Airlines
7.4
Good
1,575 reviews
Scandinavian Airlines
7.4
Good
1,575 reviews
Check prices

Crew

8.0

Overall

7.4

Food

6.7

Comfort

7.3

Boarding

7.6

Entertainment

6.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

ATL - CPH

I asked for wheelchair assistance. When I got to Copenhagen, there was none. Luckily I found a robot type wheelchair that got me to my next gate. In Dusseldorf, there was no help at all. On the return trip, SAS bumped me and sent me to another airline without provision to get to my final destination. I had to make other arrangement to get home which was VERY expensive. I do not understand them, they treat Americans like trash.

Related info for your journey

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

    If you book a flight to London Heathrow from Knoxville, you will be flying from 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 McGhee Tyson to London Heathrow per day from 1 airline.

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

    For as low as £454, Delta can have you in London Heathrow Airport from Knoxville in 20h 06m. There are 4076 mi between Knoxville and London Heathrow Airport.

  • What is the cheapest airline to fly from Knoxville to London Heathrow Airport round-trip?

    Scandinavian Airlines, at £516, was found to be the cheapest airline from Knoxville to London Heathrow Airport.. You may be able to fly from Knoxville to London Heathrow Airport for 26% less than the average price by searching for this airline.

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

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

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

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

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

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

    Currently, July is the cheapest month in which you can book a flight from Knoxville to London Heathrow Airport (average of £405). Flying from Knoxville to London Heathrow Airport in June is currently the most expensive (average of £690). 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Swindon
Crawley
Brentford
Romford
Chichester
Ipswich

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Knoxville to Heathrow

Discover the top airline that operate flights from Knoxville to Heathrow. 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 14 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£516Average£516FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Knoxville to Heathrow?

Deals for Knoxville to Heathrow flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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Can Cheapflights find flights from Knoxville to Heathrow with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Knoxville to Heathrow, users can toggle the no change fees filter when performing a flight search.

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