Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Knoxville from £218

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 30/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TYS
16 Jul — 23 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 11 July 2025.

Round-trip from

£479

One-way from

£218

Popular in

August

Cheapest in

November

Average price

£822
United Airlines
  • United Airlines
  • 17/9-24/9
  • 3 total stops
  • 41h 11m total
  • London to Knoxville
Search Deals
30/9
  • 30/9
  • 2 total stops
  • 46h 40m total
  • London to Knoxville
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£75 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 11 July 2025.

Wed 17/908:40LHR - TYS
2 stops17h 16mUnited Airlines
Fri 26/919:26TYS - LHR
1 stop30h 29mUnited Airlines
Deal found 10/7£479
Wed 17/906:55LHR - TYS
2 stops20h 50mLufthansa
Tue 30/919:26TYS - LHR
1 stop10h 14mLufthansa
Deal found 10/7£481
Fri 19/917:40LHR - TYS
2 stops35h 17mAir Canada
Sat 27/919:26TYS - LHR
2 stops30h 04mAir Canada
Deal found 11/7£511
Wed 17/906:15LHR - TYS
2 stops15h 48mDelta
Thu 25/911:49TYS - LHR
2 stops13h 31mDelta
Deal found 11/7£514
Mon 22/913:10LHR - TYS
1 stop12h 50mBritish Airways
Sat 27/916:49TYS - LHR
1 stop33h 31mBritish Airways
Deal found 10/7£535
Mon 4/809:35LHR - TYS
2 stops17h 27mVirgin Atlantic
Tue 12/818:14TYS - LHR
1 stop11h 56mVirgin Atlantic
Deal found 10/7£578
Sun 24/815:05LHR - TYS
2 stops25h 50mMultiple Airlines
Sun 31/807:30TYS - LHR
2 stops23h 25mMultiple Airlines
Deal found 10/7£594
Fri 26/906:40LHR - TYS
3 stops21h 56mScandinavian Airlines
Tue 7/1016:00TYS - LHR
2 stops21h 30mScandinavian Airlines
Deal found 11/7£670

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 11 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

Wed 17/9

08:40-20:56

2 stops17h 16m

Knoxville McGhee Tyson

Fri 26/9

19:26-06:55

1 stop30h 29m

£479

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Wed 17/9

06:55-22:45

2 stops20h 50m

Knoxville McGhee Tyson

Tue 30/9

19:26-10:40

1 stop10h 14m

£481

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Fri 19/9

17:40-23:57

2 stops35h 17m

Knoxville McGhee Tyson

Sat 27/9

19:26-06:30

2 stops30h 04m

£511

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Wed 17/9

06:15-17:03

2 stops15h 48m

Knoxville McGhee Tyson

Thu 25/9

11:49-06:20

2 stops13h 31m

£514

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

£535

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Mon 4/8

09:35-22:02

2 stops17h 27m

Knoxville McGhee Tyson

Tue 12/8

18:14-11:10

1 stop11h 56m

£578

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sun 24/8

15:05-11:55

2 stops25h 50m

Knoxville McGhee Tyson

Sun 31/8

07:30-11:55

2 stops23h 25m

£594

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Fri 26/9

06:40-23:36

3 stops21h 56m

Knoxville McGhee Tyson

Tue 7/10

16:00-18:30

2 stops21h 30m

£670

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 30/9

20:50-14:30

2 stops46h 40m

£218

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 16/9

07:40-21:00

2 stops18h 20m

£444

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 11 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 27 June 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 £1,128). 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 11 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.

How much does it cost for a return flight from London Heathrow Airport to Knoxville?

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 11 July 2025.
Read reviews from past customers who have flown with Delta, 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.
Delta
8.0
Very Good
7,951 reviews
Check prices

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

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
7,951 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

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
8,848 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

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
654 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

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
1,419 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

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.
Air Canada
7.1
Good
9,695 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

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 £479, United Airlines will fly you from London Heathrow Airport to Knoxville and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and Air Canada - these airlines can fly you to your destination from £481 and £511, respectively. These flights start at 28% 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 £1,128). 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
Cherokee

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 11 July 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£487Average£626FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£501Average£632FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£504Average£604FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£505Average£622FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
United AirlinesCheapest£523Average£696FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
IberiaCheapest£557Average£972FlexibilityNo cancel feeOn-time77%
Search Iberia flights
American AirlinesCheapest£581Average£717FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights helps you search for flights from Heathrow to Knoxville via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights helps you find that perfect flight to Knoxville from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes! Cheapflights helps users easily find flights from Heathrow to Knoxville with no change fees.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights