Cheap Flights from Knoxville to Lisbon

Compare Knoxville to Lisbon flight deals

Find the cheapest month or even day of the year to fly to Lisbon

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Flight deals from Knoxville to Lisbon

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

Find the cheapest month to fly from Knoxville to Lisbon

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Knoxville to Lisbon flights are currently cheapest in November.

Knoxville to Lisbon: Alternative routes

Compare routes from Knoxville to Lisbon below. You may find an airport to fly into that's cheaper, faster, or easier than Lisbon.

Knoxville to Lisbon: Flight information

The things to know before you go.
Cheapest flight foundR 4,115
Cheapest month to flyNovember

Finding cheap flights from Knoxville to Lisbon: Frequently asked questions

The best price we found for a return flight from Knoxville to Lisbon is R 8,052. 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 Knoxville to Lisbon. But we found flights with one or more stops from R 8,033.
As of February 2026, there are no flights flying from Knoxville to Lisbon.
The cheapest month to fly from Knoxville to Lisbon is usually April.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Knoxville Airport to Lisbon Airport on Tuesday, 14 April 2026.
No airlines currently offer direct flights between Knoxville Airport and Lisbon 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 Lisbon 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 Lisbon is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Delta offers the cheapest flight tickets to Lisbon.

Travelling from McGhee Tyson Airport (TYS) to Lisbon Portela Airport (LIS): what you need to know

  • Lisbon's timezone is UTC+0, which makes Lisbon four hours ahead of Knoxville.

  • Leave plenty of time to make your TYS to LIS flight. As a rule of thumb, arrive at least two hours before international departures and an hour ahead for domestic flights.

  • During popular months such as July, it's a good idea to get to the airport earlier than usual. Plan to arrive two hours before domestic departures and four hours ahead for an international flight when you fly during a peak period in general.

How to find the cheapest flights from McGhee Tyson Airport (TYS) to Lisbon Portela Airport (LIS)

  • R 4,105 is currently the best price for a one-way McGhee Tyson Airport to Lisbon Portela Airport flight. Return flights start at R 8,033. These prices may change depending on availability and demand.

  • To get your hands on cheap tickets from TYS to LIS, book ahead. Airlines generally offer lower prices when flights are first made available.

  • The 'Whole month' search function shows you the cheapest flights from McGhee Tyson Airport to Lisbon Portela Airport across the entire month. It's an easy way to snap up a bargain if your dates aren't set in stone.

  • Stay on top of deals for cheap flights from TYS to LIS by creating a Price Alert. You'll get an email or notification through the app when a lower fare pops up.

  • Discover the ideal flight for you with the help of the filters. To see the 'Cheapest,' 'Fastest' or 'Best' flights from McGhee Tyson Airport to Lisbon Portela Airport, use the 'Sort by' tool. You can also filter by arrival and departure times, airline, and number of stops.

Handy information about McGhee Tyson Airport (TYS)

  • TYS is located at 2055 Alcoa Highway.

  • 78.98% of flights departing from McGhee Tyson Airport land at their destination on time.

  • To reach McGhee Tyson Airport from central Knoxville, it'll take about 20 minutes if you're travelling by car. This depends on traffic though. It's approximately 23 kilometres from the airport to the city centre.

  • Get your travels off to a stress-free start by staying near TYS. Whether you've booked an early flight from McGhee Tyson Airport to Lisbon Portela Airport or just don't like being rushed, these hotels are perfect:

Arriving at Lisbon Portela Airport (LIS)

  • Reserve a hotel near LIS if you're taking a late McGhee Tyson Airport to Lisbon Portela Airport flight. Choose one of these accommodation options and skip the long transfer after landing:

  • Grab a Lisbon Portela Airport rental car and discover Lisbon and beyond with your own wheels. Klass Wagen, Goldcar and OK Mobility are well-known companies to choose from here.

  • Reserving your vehicle from Lisbon Portela Airport around two weeks ahead gives you the best chance of locking in a great deal.

Getting from Lisbon Portela Airport (LIS) to central Lisbon

  • Lisbon Portela Airport to central Lisbon has a drive time of about 20 minutes. It's approximately 10 kilometres away.

  • It'll take around 1 hour when travelling by public transport.

When to fly to Lisbon Portela Airport (LIS)

  • June is the busiest month for flights from McGhee Tyson Airport to Lisbon Portela Airport. To avoid the crowds, go to Lisbon in January.

  • Book your flight from McGhee Tyson Airport to Lisbon Portela Airport for August if you want to go to Lisbon during its warmest month. You can expect temperatures of between 16ºC (61ºF) and 29ºC (84ºF).

  • Search for cheap tickets from TYS to LIS in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 8ºC (46ºF) and 16ºC (61ºF) on average.

Explore more of Portugal

  • Porto is just one of the many cities in Portugal waiting to be explored after you've experienced Lisbon. Around 274 kilometres away to the north, popular attractions include Livraria Lello, Ribeira District and The Douro River.

  • If you're eager to discover another great destination in Portugal, head for Amadora, roughly 8 kilometres north-west of Lisbon. Jardim Porta do Viveiro Alfragide, Jardim Caracol do Victor Alfragide and Jardim e estatua Eduardo Jorge are highlights.

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