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755 € Cheap Flights from Tri-Cities to London Heathrow

Compare Tri-Cities to London Heathrow flight deals

Find the cheapest month or even day of the year to fly to London Heathrow

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Flight deals from Tri-Cities Airport to London Heathrow Airport

Looking for a cheap last-minute deal or the best return flight from Tri-Cities Airport to London Heathrow Airport? If you want to travel next month, return fares start from 836 €. Find the lowest prices on one-way and return tickets right here.
London.755 € per passenger.Departing Tue, 4 Aug, returning Wed, 12 Aug.Return flight with United.Outbound indirect flight with United, departs from Tri-Cities on Tue, 4 Aug, arriving in London Heathrow.Inbound indirect flight with United, departs from London Heathrow on Wed, 12 Aug, arriving in Tri-Cities.Price includes taxes and charges.From 755 €, select.
London.836 € per passenger.Departing Mon, 20 Apr, returning Mon, 27 Apr.Return flight with Delta.Outbound indirect flight with Delta, departs from Tri-Cities on Mon, 20 Apr, arriving in London Heathrow.Inbound indirect flight with Delta, departs from London Heathrow on Mon, 27 Apr, arriving in Tri-Cities.Price includes taxes and charges.From 836 €, select.
London.849 € per passenger.Departing Tue, 12 May, returning Fri, 22 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Tri-Cities on Tue, 12 May, arriving in London Heathrow.Inbound indirect flight with Delta, departs from London Heathrow on Fri, 22 May, arriving in Tri-Cities.Price includes taxes and charges.From 849 €, select.
London.906 € per passenger.Departing Wed, 15 Jul, returning Tue, 4 Aug.Return flight with United.Outbound indirect flight with United, departs from Tri-Cities on Wed, 15 Jul, arriving in London Heathrow.Inbound indirect flight with United, departs from London Heathrow on Tue, 4 Aug, arriving in Tri-Cities.Price includes taxes and charges.From 906 €, select.
London.985 € per passenger.Departing Mon, 6 Apr, returning Tue, 30 Jun.Return flight with Breeze Airways and Aer Lingus.Outbound indirect flight with Breeze Airways, departs from Tri-Cities on Mon, 6 Apr, arriving in London Heathrow.Inbound indirect flight with Aer Lingus, departs from London Heathrow on Tue, 30 Jun, arriving in Tri-Cities.Price includes taxes and charges.From 985 €, select.
London.1.117 € per passenger.Departing Tue, 2 Jun, returning Mon, 22 Jun.Return flight with Air France.Outbound indirect flight with Air France, departs from Tri-Cities on Tue, 2 Jun, arriving in London Heathrow.Inbound indirect flight with Air France, departs from London Heathrow on Mon, 22 Jun, arriving in Tri-Cities.Price includes taxes and charges.From 1.117 €, select.
London.1.247 € per passenger.Departing Wed, 20 May, returning Sun, 21 Jun.Return flight with Delta.Outbound indirect flight with Delta, departs from Tri-Cities on Wed, 20 May, arriving in London Heathrow.Inbound indirect flight with Delta, departs from London Heathrow on Sun, 21 Jun, arriving in Tri-Cities.Price includes taxes and charges.From 1.247 €, select.
London.1.254 € per passenger.Departing Mon, 29 Jun, returning Mon, 6 Jul.Return flight with United.Outbound indirect flight with United, departs from Tri-Cities on Mon, 29 Jun, arriving in London Heathrow.Inbound indirect flight with United, departs from London Heathrow on Mon, 6 Jul, arriving in Tri-Cities.Price includes taxes and charges.From 1.254 €, select.

Find the cheapest month to fly from Tri-Cities to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Tri-Cities to London Heathrow flights are currently cheapest in August.
Mar
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Apr
from 836 €
May
from 849 €
Jun
from 1.117 €
Jul
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Aug
from 755 €
Sep
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Oct
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Nov
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Dec
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Jan
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Feb
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Tri-Cities to London Heathrow: Alternative routes

Compare routes from Tri-Cities to London below. You may find an airport to fly into that's cheaper, faster, or easier than London Heathrow.

London City

12km from central London
Closest
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London Heathrow

23km from central London
from 755 €
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London Gatwick

40km from central London
Cheapest
from 668 €
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London Luton

45km from central London
from 812 €
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London Stansted

49km from central London
from 1.192 €
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London Southend

57km from central London
Search flights

Kingsport to London: Flight information

The things to know before you go.
Cheapest flight found755 €
Cheapest month to flyAugust

Finding cheap flights from Tri-Cities to London Heathrow: Frequently asked questions

The best price we found for a return flight from Tri-Cities to London Heathrow is 755 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Tri-Cities to London Heathrow. But we found flights with one or more stops from 755 €.
As of March 2026, there are no flights flying from Tri-Cities to London Heathrow.
The cheapest month to fly from Tri-Cities to London Heathrow is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Tri-Cities Airport to London Heathrow Airport on Tuesday, 4 August 2026.
No airlines currently offer direct flights between Tri-Cities Airport and London Heathrow Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, United offers the cheapest flight tickets to London Heathrow.

Travelling from Tri-Cities Regional Airport (TRI) to London Heathrow Airport (LHR): what you need to know

  • The timezone in London is UTC+0, which is four hours ahead of Kingsport.

  • Leave plenty of time to make your TRI to LHR flight. As a general rule, arrive two hours before international departures and an hour ahead for domestic flights.

  • Flying during a peak month like July? School holidays and other high seasons can result in longer lines at check-in and security. Play things extra safe and arrive up to four hours before international flights and two hours before domestic departures.

How to find the cheapest flights from Tri-Cities Regional Airport (TRI) to London Heathrow Airport (LHR)

  • The lowest price we've found for a one-way Tri-Cities Regional Airport to London Heathrow Airport flight is 334 €. A return fare right now is 755 €. Depending on the availability when you book, these fares may change.

  • Don't wait until the last minute. You're more likely to find cheap tickets from TRI to LHR if you book early. Airlines often offer some amazing early bird discounts.

  • The 'Whole month' tool shows you the cheapest flights from Tri-Cities Regional Airport to London Heathrow Airport across every month. It's an easy way to find a bargain if your dates are flexible.

  • Picking up cheap flights from TRI to LHR is a breeze with Price Alerts. All you need to do is create one of these automatic alerts and we'll let you know as soon as there's a better deal.

  • Select your preferred arrival and departure times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to see the best deals on flights from Tri-Cities Regional Airport to London Heathrow Airport.

Handy information about Tri-Cities Regional Airport (TRI)

  • TRI's address is 2525 Tennessee 75.

  • Of the departures from Tri-Cities Regional Airport, 79.37% land on schedule at their destination.

  • To reach Tri-Cities Regional Airport from central Kingsport, it'll take around 25 minutes if you're travelling by car. Of course, this depends on traffic. It's approximately 23 kilometres from the airport to the city centre.

  • Looking for a handy hotel close to TRI? If you've booked an early flight from Tri-Cities Regional Airport to London Heathrow Airport, these accommodation options will put you moments from your departure lounge:

Arriving at London Heathrow Airport (LHR)

Getting from London Heathrow Airport (LHR) to central London

  • From London Heathrow Airport, London is approximately 31 kilometres away. It takes around 55 minutes to reach the centre driving.

  • It'll take around 1 hour to get there by public transport.

When to fly to London Heathrow Airport (LHR)

  • It's time to pick your trip dates for your flight from Tri-Cities Regional Airport to London Heathrow Airport. July is the most popular month to visit London. If you like a more relaxed vibe, go in February.

  • Book your flight from Tri-Cities Regional Airport to London Heathrow Airport for July if you'd like to go to London during its warmest month. You can expect temperatures of between 11ºC (52ºF) and 26ºC (79ºF).

  • January has average temperatures of between 0ºC (32ºF) and 9ºC (48ºF). Look for cheap tickets from TRI to LHR sometime then if you want to travel when it's cooler.

Explore more of United Kingdom

  • You've seen London, now it's time to discover more of United Kingdom. Journey about 161 kilometres north-west to Birmingham to check off its must-visit sights. From Cadbury World to The Library of Birmingham and National Sea Life Centre, there's plenty to keep you on the go.

  • Around 177 kilometres west of London, Bristol is another favourite stop in United Kingdom. Experience major highlights starting with Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park.

Plan the rest of your trip from Kingsport to London

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.