Cheap Flights from Tri-Cities (TRI) to London Heathrow (LHR)

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 to London Heathrow

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 £785. Find the lowest prices on one-way and return tickets right here.

London.£264 per passenger.Departing Sat, 31 Oct.One-way flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Tri-Cities on Sat, 31 Oct, arriving in London Heathrow.Price includes taxes and charges.From £264, select.

London.£268 per passenger.Departing Fri, 18 Sep.One-way flight with Breeze Airways.Outbound indirect flight with Breeze Airways, departs from Tri-Cities on Fri, 18 Sep, arriving in London Heathrow.Price includes taxes and charges.From £268, select.

London.£296 per passenger.Departing Sat, 12 Dec.One-way flight with United.Outbound indirect flight with United, departs from Tri-Cities on Sat, 12 Dec, arriving in London Heathrow.Price includes taxes and charges.From £296, select.

London.£301 per passenger.Departing Mon, 17 Aug.One-way flight with Breeze Airways.Outbound indirect flight with Breeze Airways, departs from Tri-Cities on Mon, 17 Aug, arriving in London Heathrow.Price includes taxes and charges.From £301, select.

London.£409 per passenger.Departing Sun, 26 Jul.One-way flight with Finnair.Outbound indirect flight with Finnair, departs from Tri-Cities on Sun, 26 Jul, arriving in London Heathrow.Price includes taxes and charges.From £409, 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 October.

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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.

Kingsport to London: Flight information

The things to know before you go.

Cheapest flight found	£264
Cheapest month to fly	October

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

How much are return flights from Tri-Cities to London Heathrow?

The best price we found for a return flight from Tri-Cities to London Heathrow is £664. 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.

Which airlines fly direct from Tri-Cities to London Heathrow?

Currently, there are no airlines that fly direct from Tri-Cities to London Heathrow. But we found flights with one or more stops from £664.

How many flights are there a week from Tri-Cities to London Heathrow?

As of July 2026, there are no flights flying from Tri-Cities to London Heathrow.

When is the cheapest time to fly from Tri-Cities to London Heathrow?

The cheapest month to fly from Tri-Cities to London Heathrow is usually October.

Which upcoming date is cheapest to fly from Tri-Cities Airport to London Heathrow Airport on?

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 Friday, 9 October 2026.

Can I get a direct flight from Tri-Cities Airport to London Heathrow Airport?

No airlines currently offer direct flights between Tri-Cities Airport and London Heathrow Airport. Most routes have one or more stops.

How can I find the best flight deal to London Heathrow?

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.

When is the best time to book flights to London?

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.

Which is the cheapest airline to fly from Tri-Cities Airport to London Heathrow with?

Currently, Finnair offers the cheapest flight tickets to London Heathrow.

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

London's timezone is UTC+0, which makes London five hours ahead of Kingsport.
Your TRI to LHR flight won't wait if you're late, so be at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're travelling internationally.
You can expect longer lines in popular months like July. Arriving up to four hours in advance for an international flight and two hours for a domestic departure is a smart move.

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

Currently, £264 is the lowest price we've found for a one-way Tri-Cities Airport to London Heathrow Airport flight. The best price for a return ticket is £664. Remember that fares could change due to demand at the time of booking.
Don't wait until the last minute. You're more likely to get cheap tickets from TRI to LHR if you book ahead. Airlines often have some terrific early bird deals.
If you're willing to be flexible with your travel dates, try using the 'Whole month' tool. It'll give you the cheapest price in every month when searching for a flight from Tri-Cities Airport to London Heathrow Airport.
Spend less time searching for cheap flights from TRI to LHR by creating a Price Alert. You'll get an email or notification on the app when a new discounted fare appears.
Select your ideal departure and arrival times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to get the best deals on flights from Tri-Cities Airport to London Heathrow Airport.

Handy information about Tri-Cities Airport (TRI)

You'll find TRI at 2525 Tennessee 75.
Tri-Cities Airport maintains a strong on-time performance, so you're less likely to experience disruptions. Departures from TRI touch down on schedule 81% of the time.
To reach Tri-Cities Airport from central Kingsport, it'll take about 15 minutes if you're planning to drive. This depends on traffic though. It's approximately 18 kms (11 miles) from the airport to the city centre.
Expect a trip time of around 35 minutes on public transport.
Catching an early flight from Tri-Cities Airport to London Heathrow Airport? Avoid the hassle of rushing to the terminal (and sneak in some extra precious sleep) by picking one of these hotels near TRI:

Arriving at London Heathrow Airport (LHR)

The last thing you need is a long trip to your hotel if you're arriving on a late Tri-Cities Airport to London Heathrow Airport flight. Stay at one of these accommodation options near LHR instead:
Begin your adventure by picking up a London Heathrow Airport rental car. Grab your wheels from Surprice, U-Save or Green Motion and explore beyond London's main sights.
Reserving your ride from London Heathrow Airport about one week ahead can help you secure the lowest rate.

Getting from London Heathrow Airport (LHR) to central London

London Heathrow Airport to central London has a drive time of about 45 minutes. It's approximately 24 kms (15 miles) away.
If you're travelling by public transport, expect a journey of around 25 minutes.

When to fly to London Heathrow Airport (LHR)

July is the busiest month for flights from Tri-Cities Airport to London Heathrow Airport. To steer clear of the crowds, head to London in March.
Lock in your flight from Tri-Cities Airport to London Heathrow Airport for July if you want to explore London during its warmest month. You can expect temperatures of between 11ºC and 26ºC.
January has average temperatures of between 0ºC and 9ºC. Look for cheap tickets from TRI to LHR around that time if you like travelling in cooler conditions.

Explore more of the United Kingdom

Manchester is just one of the many places in the United Kingdom waiting to be explored after you've experienced London. Around 257 kms (160 miles) away to the north-west, top sights here include Manchester United Museum & Stadium Tour, The Homes of Football and Museum of Science and Industry.
If you're interested in discovering another major stop in the United Kingdom, consider Birmingham, about 161 kms (100 miles) north-west of London. Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience are among the biggest draws.