TYS - LIS

$487 Find Cheap Flights from Knoxville to Lisbon

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Knoxville to Lisbon departing on 3/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Lisbon

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to Lisbon, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to Lisbon, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$487
Typical prices: $639-$1,038
United Airlines
Mon 3/2Tue 3/17
TYS - LIS • 1 stop
Cheapest one-way
Multiple Airlines
Tue 12/16
TYS - LIS • multi-stop
When to travel
January
Cheapest • 47% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Lisbon!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Knoxville to Lisbon (TYS-LIS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Knoxville to Lisbon that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Knoxville to Lisbon

Mon, Mar 2 - Tue, Mar 17
United Airlines Logo
7:25 pm - 10:15 am
TYS
-
LIS
9h 50m1 stop
United Airlines Logo
11:20 am - 8:47 pm
LIS
-
TYS
37h 27m2 stops
$487United Airlines
Wed, Jan 28 - Sun, Feb 1
Multiple Airlines Logo
7:20 pm - 9:20 am
TYS
-
LIS
33h 00m2 stops
Multiple Airlines Logo
5:00 am - 7:27 pm
LIS
-
TYS
19h 27m2 stops
$488Multiple Airlines
Thu, Jan 15 - Sat, Jan 24
United Airlines Logo
6:59 am - 9:20 am
TYS
-
LIS
21h 21m2 stops
United Airlines Logo
11:20 am - 8:52 pm
LIS
-
TYS
38h 32m2 stops
$490United Airlines
Mon, Mar 2 - Tue, Mar 17
United Airlines Logo
10:53 am - 8:10 am
TYS
-
LIS
16h 17m2 stops
United Airlines Logo
11:20 am - 8:47 pm
LIS
-
TYS
37h 27m2 stops
$491United Airlines
Thu, Jan 29 - Thu, Feb 5
Multiple Airlines Logo
2:25 pm - 9:20 am
TYS
-
LIS
37h 55m2 stops
Multiple Airlines Logo
5:00 am - 8:52 pm
LIS
-
TYS
20h 52m2 stops
$492Multiple Airlines
Wed, Jan 28 - Sun, Feb 1
United Airlines Logo
7:20 pm - 9:20 am
TYS
-
LIS
33h 00m2 stops
United Airlines Logo
10:50 am - 8:52 pm
LIS
-
TYS
39h 02m2 stops
$493United Airlines
Fri, Jan 16 - Wed, Jan 21
United Airlines Logo
6:45 am - 8:10 am
TYS
-
LIS
20h 25m2 stops
United Airlines Logo
11:20 am - 1:24 pm
LIS
-
TYS
31h 04m2 stops
$494United Airlines
Thu, Jan 15 - Sat, Jan 24
British Airways Logo
2:19 pm - 12:10 pm
TYS
-
LIS
16h 51m2 stops
British Airways Logo
10:40 am - 8:56 pm
LIS
-
TYS
15h 16m1 stop
$495British Airways
Tue, Mar 3 - Mon, Mar 16
United Airlines Logo
6:45 am - 9:20 am
TYS
-
LIS
21h 35m2 stops
United Airlines Logo
5:00 am - 10:49 am
LIS
-
TYS
33h 49m2 stops
$497United Airlines
Mon, Mar 2 - Mon, Mar 16
United Airlines Logo
10:53 am - 10:15 am
TYS
-
LIS
18h 22m2 stops
United Airlines Logo
5:00 am - 10:49 am
LIS
-
TYS
33h 49m2 stops
$499United Airlines
Booking Insights

KAYAK's insights & trends for Knoxville to Lisbon flights

Get data-powered insights and trends into flights from Knoxville to Lisbon to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Knoxville to Lisbon?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Knoxville to Lisbon departing in March.

What is the cheapest month to fly from Knoxville to Lisbon?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Knoxville to Lisbon, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Knoxville to Lisbon is January, where tickets cost $527 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $1,724 and $1,449 respectively.

Good to know

Low seasonJanuary
Cheapest flight$487
Best time to beat the crowds with an average 48% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from Knoxville to Lisbon

When to book flights from Knoxville to Lisbon

Are your dates flexible? Find out the best times to travel from Knoxville to Lisbon based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Knoxville to Lisbon

  • What is the cheapest flight from Knoxville to Lisbon?

    In the last 3 days, the lowest price for a flight from Knoxville to Lisbon was $487 for a round-trip ticket.

  • Do I need a passport to fly between Knoxville and Lisbon?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Knoxville and on arrival in Lisbon.

  • Which aircraft models fly most regularly from Knoxville to Lisbon?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Knoxville to Lisbon?

    Star Alliance, and oneworld are the airline alliances operating flights between Knoxville and Lisbon, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Knoxville to Lisbon, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Knoxville to Lisbon are United Airlines and American Airlines. With an average price for the route of $1,046 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $1,004 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Knoxville to Lisbon?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Knoxville to Lisbon.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Knoxville to Lisbon?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Lisbon from Knoxville is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Knoxville to Lisbon?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Lisbon with an airline and back to Knoxville with another airline. Booking your flights between Knoxville and LIS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Knoxville to Lisbon?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Lisbon from Knoxville up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Knoxville to Lisbon

 
See real verified KAYAK customer reviews for airlines flying from Knoxville to Lisbon. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Knoxville to Lisbon? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9094 reviews
8.1Crew
7.1Entertainment
6.6Food
7.7Boarding
7.3Comfort
Airline reviews

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

10.0 ExcellentRoger, Dec 2025
CAE - ORD
Read more United Airlines reviews

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

United have really come back. Airport and boarding process is clear and good, app and information also very good

They charged a fee for 1st bag checked. Others in same party were free.

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

The movies offered were great. Staff were very pleasant and very efficient.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very bad! They kept delaying my flight and wouldn’t do anything about it

Gate was overcrowded. Gate agents performed very well. Flight crew was top notch! Efficient & professional & courteous. Both meals not thermalized well. Dinner main dish was actually cold in the center. Almost inedible. Breakfast sandwich was lukewarm.

The boarding was as always, the crew tried their best but not enough. The food was a disaster I had dietary restrictions that were half met because the company did not loaded the food for the flight. The entertainment screen was fine but content was not and also they removed the free messaging option from the flight and they charged 30 dollars for that crappy bandwidth. This flight is not worth the cost and the company is going down on quality.

Not comparable to Qatar Airways services on flights to Doha. Flight attendants provided basic services; I was never recognized by name or as an Executive Platinum member. Restrooms were not kept clean during the flight.

Awful. They won’t help me with anything. I booked on American but they abdicated to Iberia. The ticket was overpriced. Everything negative

it was fine, decent flight... dont get food besides cookies or pretzels so not sure why you ask about food. same for entertainment..

I got sick nothing contagious but distressing and the care I received by Kayla? Keighly the flight attendant will be memorable for ever. Thank You

I got sick nothing contagious but distressing enough and the care I received on the flight was astounding.

Waaay too small plane. They also need to up the size of the overhead bins. I would love to keep me 3k with of camera equipment in my hard case baggahe instead of it being thrown into the belly of the plane

Attendants were pleasant and the flight was smooth and relaxed.

A little late at the start but all worked out well.

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

The flight was excellent in World Travellor plus. Well worth the extra money. Boarding at Phoenix was the usual poorly organized event. Very stressful.

Although business class, the seating was really cramped. The food was so so.

Smooth trip no turbulence which is always a bonus for me lol! In cattle class so an element of being a bit squished (but not as bad as other shorter haul airlines) smaller plane than the one we flew out on and entertainment system wasn’t as modern but still definitely passed the time. Lovely crew x

I was attacked in the Miami airport and the staff did nothing. On my flight from London to Miami one of the flight attendants screamed at me and demanded I keep my seat in the upright position at all times during the fight so the man behind me was comfortable for the flight. I will never in my life use British airways again

Airlines have to stop assuming passengers bring entertainment. Provide it like you used to in business class and above!! N

I don't know about the others but the flight attendant that took care of us had the absolute wrong approach "how do we dare asking for water or anything else for that matter"

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Not my definition of first class. No leg room and barely any recline. The food was good. The crew was great. The comfort for the price I paid for London to Cairo was highway robbery. The Wi-Fi didn't work for me either.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.

Everything you need to know for your flight from Knoxville to Lisbon

Information on your arrival and departure airports