Cheap flights from London Heathrow to Knoxville from £492

from as little as £492

10 nights in Knoxville, departing London Heathrow on 08 / Sep / 2025 with British Airways (price found 2 hours ago)

Subject to availability, prices correct of the last 24 hours
Knoxville

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The London Heathrow / Knoxville route

All 6568 km of it

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Knoxville flight facts

What you need to know

Alternative flights from the UK to Knoxville

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Knoxville

Today alone, Netflights has searched over 509 flights. 08 / Sep / 2025 is currently the lowest priced day of the year to fly the London Heathrow/Knoxville route. There are around 240 flights on any given week from the UK to Knoxville and the cheapest month to fly right now is September.

Not suitable? Try running another search or viewing all cheap flight deals.

Min / Max Temperature (°C)
LOWEST

-1 °C

AVG

15 °C

HIGHEST

31 °C

Rainfall (mm)
LOWEST

70 mm

AVG

100.2 mm

HIGHEST

127 mm

Key facts about Knoxville

How to get cheap flights from London Heathrow to Knoxville

Tips and advice from our flight experts

Search for cheap flights and last-minute deals with Netflights. We've scanned all the flights from London Heathrow to Knoxville, across the seven airlines that offer this route. We've found that 08 / Sep / 2025 is the cheapest date to travel at the moment, but it's best to go through the results to see which flight suits you.

British Airways is the most popular airline that flies from London Heathrow to Knoxville. But it's still worth looking at other options, as there are 240 flights to Knoxville every week. If you want to broaden your search, look at flights departing from other airports.

Generally speaking, the flight from London Heathrow to Knoxville takes around 13 hrs 10 mins. The fastest flight takes 11 hrs 35 mins to cover the 6568 km distance. You can view all flight times yourself in the results list.

If you want to travel in August, it's best to book your flights early, as this is peak season in Knoxville. The cheapest month to fly is normally January – try searching three to four months prior to then to get a bargain. You can also search by month, which will reveal the cheapest time of the week to fly.

Other popular destinations near Knoxville

Where other people are flying to

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