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£244 Cheap Flights from Tri-Cities (TRI) to London (LHR)

View £244 flight on Wed, 25 Nov 2026Opens in a new window

Popular airlines from Tri-Cities, TN (TRI-Tri-Cities Regional) to Heathrow Airport (LHR)

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

Prices were available within the past 7 days and start at £244 for one-way flights and £680 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Wed, 23 Sept - Wed, 7 Oct
TRI
Tri-Cities
LHR
London
£680 Return, found 5 days ago
£680
Return
found 5 days ago
Select KLM flight, departing Wed, 23 Sept from Tri-Cities to London, returning Wed, 7 Oct, priced at £680 found 5 days ago
Air France
Wed, 23 Sept - Wed, 7 Oct
TRI
Tri-Cities
LHR
London
£686 Return, found 5 days ago
£686
Return
found 5 days ago
Select Air France flight, departing Wed, 23 Sept from Tri-Cities to London, returning Wed, 7 Oct, priced at £686 found 5 days ago
KLM
Wed, 23 Sept - Wed, 7 Oct
TRI
Tri-Cities
LHR
London
£687 Return, found 5 days ago
£687
Return
found 5 days ago
Select KLM flight, departing Wed, 23 Sept from Tri-Cities to London, returning Wed, 7 Oct, priced at £687 found 5 days ago
Air France
Wed, 23 Sept - Wed, 7 Oct
TRI
Tri-Cities
LHR
London
£689 Return, found 5 days ago
£689
Return
found 5 days ago
Select Air France flight, departing Wed, 23 Sept from Tri-Cities to London, returning Wed, 7 Oct, priced at £689 found 5 days ago
Air France
Wed, 23 Sept - Wed, 7 Oct
TRI
Tri-Cities
LHR
London
£691 Return, found 5 days ago
£691
Return
found 5 days ago
Select Air France flight, departing Wed, 23 Sept from Tri-Cities to London, returning Wed, 7 Oct, priced at £691 found 5 days ago
KLM
Tue, 29 Dec - Fri, 15 Jan
TRI
Tri-Cities
LHR
London
£691 Return, found 4 days ago
£691
Return
found 4 days ago
Select KLM flight, departing Tue, 29 Dec from Tri-Cities to London, returning Fri, 15 Jan, priced at £691 found 4 days ago
Air France
Wed, 23 Sept - Wed, 7 Oct
TRI
Tri-Cities
LHR
London
£695 Return, found 5 days ago
£695
Return
found 5 days ago
Select Air France flight, departing Wed, 23 Sept from Tri-Cities to London, returning Wed, 7 Oct, priced at £695 found 5 days ago
Air France
Tue, 29 Dec - Fri, 15 Jan
TRI
Tri-Cities
LHR
London
£697 Return, found 4 days ago
£697
Return
found 4 days ago
Select Air France flight, departing Tue, 29 Dec from Tri-Cities to London, returning Fri, 15 Jan, priced at £697 found 4 days ago
KLM
Tue, 29 Dec - Fri, 15 Jan
TRI
Tri-Cities
LHR
London
£698 Return, found 4 days ago
£698
Return
found 4 days ago
Select KLM flight, departing Tue, 29 Dec from Tri-Cities to London, returning Fri, 15 Jan, priced at £698 found 4 days ago
Virgin Atlantic
Tue, 29 Dec - Fri, 15 Jan
TRI
Tri-Cities
LHR
London
£712 Return, found 4 days ago
£712
Return
found 4 days ago
Select Virgin Atlantic flight, departing Tue, 29 Dec from Tri-Cities to London, returning Fri, 15 Jan, priced at £712 found 4 days ago

Find the cheapest month to fly from Tri-Cities (TRI) to London (LHR)

March is typically the cheapest month to fly

From £452 - £1,299 per traveller.

Frequently asked questions

How much does a flight from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow) cost?
You can find cheap one-way flights from £244 and cheap return flights from £680 TRI to LHR with Expedia. One-way flights typically cost between £453 and £2923, and return flights often range between £563 and £2967. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when TRI to LHR ticket fares go up or down.
What is the cheapest month to fly from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow)?
The cheapest months to fly from TRI to LHR are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow)?
Enter TRI to LHR and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow)?
American Eagle is one of the cheapest airlines offering connecting return flights from Tri-Cities Regional (TRI) to London Heathrow (LHR), with tickets starting from around £854 for flights that can be booked for departure within the next year. These prices are per adult for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow)?
To find a cheap flight from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow)?
There are around 17 connecting flights per day from Tri-Cities Regional (TRI) to London Heathrow (LHR). Some common connection points include Charlotte-Douglas Intl. (CLT), Hartsfield-Jackson Atlanta Intl. (ATL), and O'Hare Intl. (ORD).
What is the earliest flight from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow)?
The earliest flight from Tri-Cities Regional (TRI) to London Heathrow (LHR) typically departs around 5:00 AM local time. This service is operated by American Airlines and British Airways. This is a seasonal service, active only in July. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow)?
You'll typically find the most flights from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow) on a Saturday, with around 22 flights available. This gives you a good selection for your travel plans. Major airlines on this route include Delta, American Airlines, and American Eagle. Flight options are fairly consistent throughout the week, with Saturday offering slightly more choices.
What are the most popular departure times for flights from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow)?
The most popular departure times for flights from Tri-Cities Regional (TRI) to London Heathrow (LHR) are in the morning, between 9am and 12pm. Many major carriers, including American Airlines, Delta and United, offer flights during this window. Many travellers prefer this time as it allows for an early start to their journey, getting them to their destination with plenty of time left in the day.
How long does it take to fly from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow)?
There are no nonstop flights from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow). The journey covers a distance of approximately 6,410 kilometres (3,983 miles). Flights with one stop typically take around 12 hours 30 minutes. If your journey involves two or more stops, you can expect the travel time to be longer, usually around 14 hours 48 minutes. Keep in mind that these are average times, and your actual flight duration can vary depending on the specific routing, layover times, and even factors like wind patterns.
Can you fly business or first class from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow)?
Yes, you can fly business class or first class between TRI and LHR. You can fly business class with Delta.First class cabins are available on American Airlines.
How do I earn miles on a Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow) flight with Expedia?
It's easy to earn miles on a Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for London (LHR) from Tri-Cities, TN (TRI)?
If you're planning to travel to London from Tri-Cities Regional (TRI), you can fly directly into Heathrow Airport (LHR) which offers international flights and connections. Some flights may connect through major hubs like Charlotte-Douglas Intl. (CLT), Hartsfield-Jackson Atlanta Intl. (ATL), or Dallas-Fort Worth Intl. (DFW) before reaching London. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow) at the last minute?
Typically, booking a last minute flight from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow) flight and hotel package?
Securing a Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow)?
If you booked your Tri-Cities, TN (TRI-Tri-Cities Regional) to London (LHR-Heathrow) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Tri-Cities Regional
Destination airport
Heathrow
Return price
£680
Distance
6372 km

Book with confidence

Compare flights from Tri-Cities to London easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Tri-Cities to London. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Heathrow in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Tri-Cities Regional to Heathrow.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Tri-Cities Regional (TRI) to Heathrow (LHR)

The easiest way to view the best deals on flights from Tri-Cities to London today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Tri-Cities Regional to Heathrow start at just £680 and range up to £712.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Tri-Cities and London
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Tri-Cities to London flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Tri-Cities Regional to Heathrow for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Tri-Cities to London easily and book with confidence

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*Available to Expedia members.