Cheap flights from London to Tri-Cities

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Flight deals from London to Tri-Cities

Looking for a cheap last-minute deal or the best return flight from London to Tri-Cities? Find the lowest prices on one-way and return tickets right here.

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

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London to Tri-Cities flights are currently cheapest in September.

London to Tri-Cities: Alternative routes

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

London to Kingsport: Flight information

The things to know before you go.
Cheapest flight found$774
Cheapest month to flySeptember

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

The best price we found for a return flight from London to Tri-Cities is $1,060. 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 London to Tri-Cities. But we found flights with one stop from $1,060.
As of February 2026, there are no flights flying from London to Tri-Cities.
The cheapest month to fly from London to Tri-Cities is usually September.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from London to Tri-Cities Airport on Tuesday, 1 September 2026.
No airlines currently offer direct flights between London and Tri-Cities 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 Tri-Cities 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 Kingsport is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Tri-Cities is United .

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

  • When organising a flight from London to Tri-Cities Regional Airport (TRI), you'll have a good range of airports to take off from. Check out London Heathrow Airport (LHR) and London Gatwick Airport (LGW) for your departure options. Other possibilities include Stansted Airport (STN), London Luton Airport (LTN) and London City Airport (LCY).

  • Tri-Cities Regional Airport is located in Kingsport. The city is in the UTC-4 timezone and is four hours behind London.

  • Leave plenty of time to make your flight from London to TRI. As a general rule, turn up at least two hours before international departures and an hour ahead for domestic flights.

  • With more travellers during high season, it's wise to get to your terminal earlier than usual. Two hours for domestic flights and up to four for international trips will help you deal with any delays.

Airports in London

London Heathrow Airport (LHR)

  • Consider adding a stopover to find cheap flights from London to TRI. Just deselect 'Direct flights only' when searching for departures from London Heathrow Airport (LHR). Slip in a stop (and skip the high fares) by flying through one of these popular options:

    • Hartsfield-Jackson Atlanta International Airport (ATL)

    • Dallas/Fort Worth International Airport (DFW)

    • Charlotte Douglas International Airport (CLT)

  • LHR is around 31 kilometres from central London. If you're driving, ride-sharing or catching a cab from the centre, it'll take 55 minutes or so to get there, depending on the traffic. If you're taking public transport, expect the travel time to be around 1 hour.

  • In search of a comfortable hotel near London Heathrow Airport? If you've booked an early flight from London to Tri-Cities Regional Airport, these accommodation options will have you sleeping moments from your departure lounge:

  • 68.18% of flights that leave from London Heathrow Airport make it to their destination on time.

London Gatwick Airport (LGW)

  • You can get to LGW from central London in approximately 1 hour 20 minutes by car (depending on traffic conditions). The journey by public transport takes roughly 30 minutes to travel the 80 kilometres or so.

  • Kick off your holiday early with an extra night away from home. Before catching your London to TRI flight, stay in one of these hotels near London Gatwick Airport:

  • London Gatwick Airport has an on-time performance of 69.26%. This figure shows how often flights that leave from this airport reach their destination on time.

Stansted Airport (STN)

  • STN is around 64 kilometres from central London. Driving from the city centre to the airport takes about 1 hour. If you're considering public transport, expect a journey of around 1 hour 25 minutes.

  • Make catching an early London to Tri-Cities Regional Airport flight the easiest part of your trip. Book a room at one of these hotels near Stansted Airport and get to your check-in counter with plenty of time to spare:

  • The on-time performance record of STN is 64.73%. In simpler terms, that's how frequently flights departing this airport reach their final stop as planned.

About Tri-Cities Regional Airport (TRI)

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

  • The cheapest price we've found for a one-way ticket from London to Tri-Cities Regional Airport is $774. For a return flight on this route, the best price is $1,060. Depending on how early you book and the availability, these fares may change.

  • Booking in advance is often the key to finding a cheap flight from London to TRI. Airlines adjust prices based on demand, so the closer your departure date, the more you'll likely spend on your ticket.

  • Affordable London to Tri-Cities Regional Airport tickets are easier to find if you're not locked into specific dates. Try using the 'Whole month' search function to compare fares throughout the month and then choose the cheapest day.

  • Never miss a deal on plane tickets from London to TRI by setting up a Price Alert. We'll send you an email or push notification on the app when prices go down.

  • Filters make it easier to dig up a deal for your flight from London to Tri-Cities Regional Airport. Choose the departure times, carriers and stops that match your plans. Then sort the results by 'Cheapest' to find the best price quickly.

The best time to fly from London to Tri-Cities Regional Airport (TRI)

  • July is the most popular month for flights from London to Tri-Cities Regional Airport (TRI). Plan your visit to Kingsport in February if you'd rather avoid peak season.

  • When booking your London to TRI plane ticket, consider what kind of weather works for you. July is the warmest month in Kingsport, with temperatures ranging from 16ºC (61ºF) to 31ºC (88ºF).

  • If you'd rather travel in cooler conditions, search for a cheap ticket from London to Tri-Cities Regional Airport in January when temperatures are between -7ºC (19ºF) and 10ºC (50ºF).

More about Kingsport

  • Start your Kingsport trip right by choosing the ideal place to stay. As soon as you've booked your flight from London to Tri-Cities Regional Airport, browse our range of hotels including:

  • You'll find loads of awesome things to do in Kingsport when you're ready to sightsee. Kick off your exploring at Foot Bridge - Lakeside Trail followed by Mountain Music Museum and Allandale Mansion.

Explore more of the United States

  • Kingsport has plenty to offer, but there are so many other parts of the United States waiting to be explored. Around 193 kilometres south-east of Kingsport, a trip to Charlotte will keep you busy. Start with attractions like Bechtler Museum of Modern Art, Discovery Place and NASCAR Hall of Fame.

  • Where to next? Set off for Ironville. It's roughly 225 kilometres north of Kingsport and features highlights like Hoods creek cemetery.

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