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Cheap flights from Knoxville to London Heathrow Airport from £301

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 23/2. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — LHR
30 Nov — 7 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 31 October 2025.

Round-trip from

£452

One-way from

£301

Popular in

June

Cheapest in

February

Average price

£565
Delta
  • Delta
  • 3/12-8/12
  • 3 total stops
  • 36h 58m total
  • Knoxville to London
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Lufthansa
  • Lufthansa
  • 23/2
  • 1 total stop
  • 11h 19m total
  • Knoxville to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£124 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
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Average for round-trip flights in October 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 31 October 2025.

Wed 3/1206:29TYS - LHR
1 stop19h 36mDelta
Mon 8/1206:30LHR - TYS
2 stops17h 22mDelta
Deal found 29/10£452
Fri 28/1105:45TYS - LHR
2 stops20h 25mMultiple Airlines
Wed 3/1208:45LHR - TYS
2 stops39h 44mMultiple Airlines
Deal found 30/10£462
Fri 28/1105:45TYS - LHR
1 stop19h 55mUnited Airlines
Wed 3/1206:35LHR - TYS
2 stops19h 29mUnited Airlines
Deal found 30/10£469
Tue 4/1110:50TYS - LHR
1 stop19h 25mUnited Airlines
Tue 11/1106:35LHR - TYS
2 stops18h 45mUnited Airlines
Deal found 29/10£470
Tue 4/1119:20TYS - LHR
2 stops30h 50mMultiple Airlines
Tue 11/1120:15LHR - TYS
2 stops31h 40mMultiple Airlines
Deal found 29/10£471
Fri 28/1114:49TYS - LHR
1 stop13h 11mKLM
Wed 3/1208:55LHR - TYS
1 stop12h 58mKLM
Deal found 30/10£474
Fri 12/1210:50TYS - LHR
2 stops14h 50mUnited Airlines
Mon 15/1209:00LHR - TYS
2 stops33h 17mUnited Airlines
Deal found 30/10£474
Sun 9/1105:45TYS - LHR
1 stop24h 05mUnited Airlines
Tue 25/1116:20LHR - TYS
1 stop12h 39mUnited Airlines
Deal found 30/10£485
Fri 14/1115:53TYS - LHR
1 stop10h 57mDelta
Thu 20/1111:30LHR - TYS
2 stops17h 11mDelta
Deal found 31/10£486
Thu 27/1105:45TYS - LHR
2 stops20h 25mUnited Airlines
Thu 4/1206:35LHR - TYS
2 stops17h 54mUnited Airlines
Deal found 29/10£489

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 31 October 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

Sat 29/11

07:00-07:30

1 stop19h 30m

London Heathrow

Sat 6/12

06:35-10:48

2 stops33h 13m

£469

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 3/12

10:50-07:10

2 stops15h 20m

London Heathrow

Mon 8/12

09:00-21:04

2 stops17h 04m

£471

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 3/12

06:29-07:05

1 stop19h 36m

London Heathrow

Mon 8/12

10:45-18:52

1 stop13h 07m

£474

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Thu 27/11

05:45-07:10

2 stops20h 25m

London Heathrow

Thu 4/12

06:35-19:29

2 stops17h 54m

£489

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Fri 14/11

10:22-07:05

2 stops15h 43m

London Heathrow

Thu 20/11

11:30-23:41

2 stops17h 11m

£489

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Sat 29/11

17:52-10:25

1 stop11h 33m

London Heathrow

Sat 6/12

09:55-16:55

1 stop12h 00m

£493

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Fri 12/12

19:59-11:40

1 stop10h 41m

London Heathrow

Mon 15/12

08:55-18:52

1 stop14h 57m

£493

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Thu 8/1

11:07-07:10

2 stops15h 03m

London Heathrow

Wed 14/1

09:00-21:02

2 stops17h 02m

£496

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Fri 12/12

10:50-06:40

2 stops14h 50m

London Heathrow

Fri 19/12

16:20-23:59

1 stop12h 39m

£496

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Sun 11/1

17:29-11:15

1 stop12h 46m

London Heathrow

Sat 17/1

15:30-21:02

2 stops34h 32m

£499

Flights are sorted by cheapest return flights first.

Deals found on 29/10

Showing 1-10 of 18 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 24 October 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 £383). Flying from Knoxville to London Heathrow Airport in June is currently the most expensive (average of £689). 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 31 October 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 31 October 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
1,548 reviews
Check prices

Comfort

7.3

Entertainment

6.6

Food

6.6

Overall

7.4

Boarding

7.6

Crew

8.0

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
1,548 reviews
Scandinavian Airlines
7.4
Good
1,548 reviews
Check prices

Comfort

7.3

Entertainment

6.6

Food

6.6

Overall

7.4

Boarding

7.6

Crew

8.0

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 £489, United Airlines can have you in London Heathrow Airport from Knoxville in 15h 43m. There are 4076 mi between Knoxville and London Heathrow Airport. Both multi-stop and direct flights can be found to your destination and back.

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

    Scandinavian Airlines, at £515, 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.

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

    For one-way options, check prices for Lufthansa. According to our data, you can fly for as low as £301. Users have also found prices from £303 and £342 on United Airlines and KLM, respectively.

  • 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 £383). Flying from Knoxville to London Heathrow Airport in June is currently the most expensive (average of £689). 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
Chichester
Swindon
Crawley
Romford
Brentford
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 31 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£515Average£515FlexibilityNo 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.

Why should you use Cheapflights to find cheap flight tickets from Knoxville to Heathrow?

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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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