LHR - TYS

$604 Find Cheap Flights from London Heathrow Airport to Knoxville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Knoxville departing on 5/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Knoxville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Knoxville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Knoxville, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$664
Overall average: $853
Lufthansa
Sun 1/25Sun 2/15
LHR - TYS • 2 stops
Cheapest one-way
$604
British Airways
Fri 5/8
LHR - TYS • 2 stops
Top airlines
Lufthansa
Cheapest • from $664 (round-trip)
British Airways
Best reviews • 6.7 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 32% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 25% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Knoxville!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Heathrow to Knoxville (LHR-TYS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Heathrow to Knoxville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Heathrow to Knoxville

Sun, Jan 25 - Sun, Feb 15
Lufthansa Logo
8:30 am - 7:27 pm
LHR
-
TYS
15h 57m2 stops
Lufthansa Logo
2:21 pm - 6:40 am
TYS
-
LHR
11h 19m1 stop
$664Lufthansa
Thu, Feb 12 - Thu, Feb 19
United Airlines Logo
9:00 am - 8:37 pm
LHR
-
TYS
16h 37m2 stops
United Airlines Logo
9:40 am - 6:40 am
TYS
-
LHR
16h 00m1 stop
$681United Airlines
Thu, Feb 19 - Mon, Feb 23
United Airlines Logo
6:35 am - 7:29 pm
LHR
-
TYS
17h 54m2 stops
United Airlines Logo
2:21 pm - 10:25 am
TYS
-
LHR
15h 04m2 stops
$686United Airlines
Sun, Jan 25 - Sun, Feb 15
United Airlines Logo
8:30 am - 8:52 pm
LHR
-
TYS
17h 22m2 stops
United Airlines Logo
10:55 am - 6:40 am
TYS
-
LHR
14h 45m2 stops
$688United Airlines
Sun, Jan 25 - Sun, Feb 15
Lufthansa Logo
12:05 pm - 7:27 pm
LHR
-
TYS
12h 22m1 stop
Lufthansa Logo
2:21 pm - 6:40 am
TYS
-
LHR
11h 19m1 stop
$694Lufthansa
Wed, Feb 11 - Wed, Feb 18
British Airways Logo
9:55 am - 4:49 pm
LHR
-
TYS
11h 54m1 stop
British Airways Logo
4:02 pm - 10:25 am
TYS
-
LHR
13h 23m1 stop
$696British Airways
Mon, Apr 13 - Tue, May 12
British Airways Logo
6:35 am - 10:32 am
LHR
-
TYS
32h 57m2 stops
British Airways Logo
8:23 pm - 12:15 pm
TYS
-
LHR
10h 52m1 stop
$707British Airways
Tue, Apr 14 - Tue, May 12
British Airways Logo
11:30 am - 11:06 pm
LHR
-
TYS
16h 36m2 stops
British Airways Logo
7:55 am - 7:50 am
TYS
-
LHR
18h 55m1 stop
$708British Airways
Thu, Feb 12 - Thu, Feb 19
Lufthansa Logo
7:40 am - 8:37 pm
LHR
-
TYS
17h 57m1 stop
Lufthansa Logo
2:21 pm - 6:40 am
TYS
-
LHR
11h 19m1 stop
$710Lufthansa
Fri, Feb 6 - Mon, Feb 9
United Airlines Logo
6:50 am - 7:27 pm
LHR
-
TYS
17h 37m2 stops
United Airlines Logo
1:59 pm - 10:25 am
TYS
-
LHR
15h 26m2 stops
$712United Airlines
Booking Insights

KAYAK's insights & trends for Heathrow to Knoxville flights

Get data-powered insights and trends into flights from Heathrow to Knoxville to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from London Heathrow Airport to Knoxville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Knoxville, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London Heathrow Airport to Knoxville is September, where tickets cost $697 (return) on average. On the other hand, the most expensive months are December and August, where the average cost of round-trip tickets is $1,261 and $1,165 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London Heathrow Airport to Knoxville, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from London Heathrow Airport to Knoxville, you should book around 4 weeks before departure, which saves you about 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$604
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 19% lower on average.
Flight from London Heathrow Airport to Knoxville

When to book flights from Heathrow to Knoxville

Are your dates flexible? Find out the best times to travel from Heathrow to Knoxville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Heathrow Airport to Knoxville flights

  • What is the cheapest flight from London Heathrow Airport to Knoxville?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Knoxville was $604 for a one-way ticket and $664 for a round-trip.

  • Do I need a passport to fly between London Heathrow Airport and Knoxville?

    Yes

  • Which airports will I be using when flying from London Heathrow Airport to Knoxville?

    On your way to Knoxville, you’ll fly out from London Heathrow. You’ll be landing at Knoxville McGhee Tyson.

  • Which aircraft models fly most regularly from London Heathrow Airport to Knoxville?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London Heathrow Airport to Knoxville?

    oneworld is the only airline alliance operating flights between London Heathrow Airport and Knoxville.

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Knoxville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to Knoxville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to Knoxville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Knoxville from London Heathrow Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to Knoxville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Knoxville with an airline and back to London Heathrow Airport with another airline. Booking your flights between London Heathrow Airport and TYS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to Knoxville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Knoxville from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Heathrow to Knoxville

 
See real verified KAYAK customer reviews for airlines flying from London to Knoxville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to Knoxville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.7
British AirwaysOverall score based on 7625 reviews
6.7Comfort
7.6Crew
6.9Boarding
6.4Entertainment
6.4Food
Airline reviews

Everything. Employees offered to help me because I had to use a cane.

8.0 ExcellentRegina, Dec 2025
LHR - ORD
Read more British Airways reviews

Everything. Employees offered to help me because I had to use a cane.

Check-in and boarding were great. On flight staff were rude and disrespectful. Paid for extra room and found it incredibly cramped. Bathrooms kept in poor condition. Overall negative experience.

My seat cushion was poor. The cushion was compressed and was uncomfortable for such a long flight.

I was in a bulkhead seat and my tray table wasn't level. Eating was difficult.

Audi visual not working for a whole group of seats in first class. How does a plane leave the main hub in such poor condition? How much that we can’t see so immediately is also compromised?

main meals are horrible but then you dont fly for the food

It was good. Couldn’t Check in online and select seats

It was great. Enough space and room for legs . Great service to.

⭐ British Airways Review — A Journey of Highs, Lows, and Lessons ⭐ I recently flew Business Class round-trip from Boston to Mumbai with British Airways, and my experience was a tale of two extremes — from disappointment to exceptional service, and then back to inconsistency. Boston → London: A Surprisingly Poor Start My journey began on a disappointing note. On a 6-hour Business Class flight, I was surprised to discover that there wasn’t a single proper vegetarian meal option available. I was offered a few bakery items only after repeatedly requesting something to eat. The flight attendant shrugged, offered no solution, and eventually — quite literally — threw some bread at me after much delay. This was not only disheartening, it was extremely surprising given my wonderful Business Class experience with BA last year. I stepped off that flight genuinely hungry and had to make a mad dash to the lounge just to get a proper meal. London → Mumbai: A Complete Turnaround The next sector restored my faith in British Airways. The entire crew was warm, welcoming, attentive, and genuinely caring. A special shoutout to Phiroze and the entire team serving the Business Class cabin — their professionalism, hospitality, and thoughtful service were extraordinary. They truly embodied what makes British Airways a global leader, and I am deeply grateful for the experience they provided. This is the BA I know and love. Mumbai → London: A Strange Meal Schedule This sector was generally fine, but the meal timing was puzzling. Lunch at 10:30 AM — for a Business cabin — felt unusual, and most passengers, including myself, barely touched it. The rest of the service was smooth, but the scheduling definitely needs a rethink. London → Boston: Mixed Experience Again The flight itself was decent, but the Business Lounge at Heathrow for this leg was a letdown. Arrived during lunch hours: no hot vegetarian options available Lounge area: dirty dishes everywhere Even after politely alerting the staff, the dishes were ignored and left uncleared For a premium cabin passenger — and at one of the world’s busiest international hubs — this was disappointing. Overall Impression My journey with British Airways felt inconsistent — two great sectors sandwiched between two that fell short of the BA standard. When BA is good, it is world-class. When it misses, the gap is noticeable. I genuinely hope the airline takes this feedback as constructive insight. I continue to believe in British Airways, and I commend the outstanding crew on the London → Mumbai sector — they were the highlight of my entire trip. With a little more focus on vegetarian meal availability, lounge service, and consistency across crews, BA can ensure every Business Class passenger experiences the premium journey they promise.

We were in business class and I had seat # 1. This was a night flight and after dinner was served, lights were dimmed and I went to sleep. The crew were loud and noisy so I didn’t get much sleep. I expect the crew to enjoy themselves but would Appreciate some decency in staying quiet while the passengers sleep

Everything you need to know for your flight from Heathrow to Knoxville

Information on your arrival and departure airports