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$647+ Cheap flights from Knoxville (TYS) to Lisbon (LIS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — LIS
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheap flight deals from Knoxville to Lisbon

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Lisbon (LIS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated junio 12, 2025.

Round-trip from

$867
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$1,724
From Knoxville McGhee Tyson to Lisbon Humberto Delgado
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Highest demand for flights based on searches. 31% potential increase in price ($456 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($68 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Knoxville to Lisbon

Cheapest flights from Knoxville to Lisbon
Explore the most affordable flight options available from Knoxville to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/247:00 amTYS - LIS
2 stops20h 20mUnited Airlines
mar. 11/45:00 amLIS - TYS
2 stops23h 59mUnited Airlines
Deal found 6/10$647
This British Airways deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/244:01 pmTYS - LIS
1 stop12h 04mBritish Airways
mar. 11/46:30 amLIS - TYS
2 stops20h 01mBritish Airways
Deal found 6/10$677
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/47:10 amTYS - LIS
1 stop17h 20mMultiple Airlines
mié. 10/156:25 amLIS - TYS
2 stops37h 05mMultiple Airlines
Deal found 6/10$774
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/47:16 amTYS - LIS
1 stop20h 49mAmerican Airlines
jue. 10/166:35 amLIS - TYS
2 stops17h 24mAmerican Airlines
Deal found 6/10$836
This Lufthansa deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/19:55 amTYS - LIS
2 stops30h 55mLufthansa
mar. 7/85:05 amLIS - TYS
2 stops23h 54mLufthansa
Deal found 6/11$905
This Air Canada deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 7/65:45 amTYS - LIS
2 stops24h 20mAir Canada
lun. 7/1411:25 amLIS - TYS
2 stops32h 33mAir Canada
Deal found 6/11$1,125

Cheapflights Fare Finder

Customize your flight search to find flights from Knoxville to Lisbon that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated junio 12, 2025.
Use the filters below to find and compare flights from Knoxville to Lisbon that are best for you.

Fly from

Knoxville

Fly to

Lisbon

Route

Depart

Return

Price

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

vie. 10/24

7:00 am-8:20 am

2 stops20h 20m

Lisbon Humberto Delgado

mar. 11/4

5:00 am-11:59 pm

2 stops23h 59m

$647

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

vie. 10/24

4:01 pm-9:05 am

1 stop12h 04m

Lisbon Humberto Delgado

mar. 11/4

6:30 am-9:31 pm

2 stops20h 01m

$677

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

sáb. 10/4

7:10 am-5:30 am

1 stop17h 20m

Lisbon Humberto Delgado

mié. 10/15

6:25 am-2:30 pm

2 stops37h 05m

$774

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

sáb. 10/4

7:16 am-9:05 am

1 stop20h 49m

Lisbon Humberto Delgado

jue. 10/16

6:35 am-6:59 pm

2 stops17h 24m

$836

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

mar. 7/1

9:55 am-9:50 pm

2 stops30h 55m

Lisbon Humberto Delgado

mar. 7/8

5:05 am-11:59 pm

2 stops23h 54m

$905

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

dom. 7/6

5:45 am-11:05 am

2 stops24h 20m

Lisbon Humberto Delgado

lun. 7/14

11:25 am-2:58 pm

2 stops32h 33m

$1,125

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Knoxville to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from Knoxville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How far ahead should I book a flight from Knoxville to Lisbon?

Use this chart to determine the optimal time to book a round-trip flight from Knoxville to Lisbon. Price data was last updated on June 9, 2025.

The price you pay for your flight from Knoxville to Lisbon may vary depending on when you book. For the best chance of a lower fare, look to book 44 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Knoxville to Lisbon?

Currently, January is the cheapest month in which you can book a flight from Knoxville to Lisbon (average of $612). Flying from Knoxville to Lisbon in June is currently the most expensive (average of $1,136). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from TYS to LIS?

Find hourly flight availability from Knoxville to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.

When flying from Knoxville to Lisbon, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 35% versus a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Knoxville to Lisbon. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Knoxville to Lisbon flight should consider departing on Monday evenings when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Lisbon by month

Plan your trip to Lisbon by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Lisbon ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Lisbon when rainfall is around 0.2 in.

Temperature in Lisbon by month

Plan your trip to Lisbon by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Lisbon, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Lisbon

Get insights into the airlines that provide service to Lisbon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Lisbon. Reviews last updated junio 12, 2025.
Air France
7.5
Good
1,463 reviews

Food

7.0

Boarding

7.4

Crew

8.2

Entertainment

7.0

Comfort

7.4

Overall

7.5

Reviews

1 / 20
10.0
Excellent

SYLVIA,Apr 2025

TLV - CDG

A newer plane. The flight from TelAviv to Paris was on a new aircraft, wider seat. ,more privacy. Nice toilets. The flight from Paris to Santiago Chile was on a very old aircraft. Awful toilets, outmoded sits etc.
Air France
7.5
Good
1,463 reviews
Air France
7.5
Good
1,463 reviews

Food

7.0

Boarding

7.4

Crew

8.2

Entertainment

7.0

Comfort

7.4

Overall

7.5

Reviews

1 / 20
10.0
Excellent

SYLVIA,Apr 2025

TLV - CDG

A newer plane. The flight from TelAviv to Paris was on a new aircraft, wider seat. ,more privacy. Nice toilets. The flight from Paris to Santiago Chile was on a very old aircraft. Awful toilets, outmoded sits etc.
United Airlines
7.4
Good
8,790 reviews
Air France
7.5
Good
1,463 reviews

Food

7.0

Boarding

7.4

Crew

8.2

Entertainment

7.0

Comfort

7.4

Overall

7.5

Reviews

1 / 20
10.0
Excellent

SYLVIA,Apr 2025

TLV - CDG

A newer plane. The flight from TelAviv to Paris was on a new aircraft, wider seat. ,more privacy. Nice toilets. The flight from Paris to Santiago Chile was on a very old aircraft. Awful toilets, outmoded sits etc.
American Airlines
7.2
Good
10,000 reviews
Air France
7.5
Good
1,463 reviews

Food

7.0

Boarding

7.4

Crew

8.2

Entertainment

7.0

Comfort

7.4

Overall

7.5

Reviews

1 / 20
10.0
Excellent

SYLVIA,Apr 2025

TLV - CDG

A newer plane. The flight from TelAviv to Paris was on a new aircraft, wider seat. ,more privacy. Nice toilets. The flight from Paris to Santiago Chile was on a very old aircraft. Awful toilets, outmoded sits etc.
Air Canada
7.1
Good
9,531 reviews
Air France
7.5
Good
1,463 reviews

Food

7.0

Boarding

7.4

Crew

8.2

Entertainment

7.0

Comfort

7.4

Overall

7.5

Reviews

1 / 20
10.0
Excellent

SYLVIA,Apr 2025

TLV - CDG

A newer plane. The flight from TelAviv to Paris was on a new aircraft, wider seat. ,more privacy. Nice toilets. The flight from Paris to Santiago Chile was on a very old aircraft. Awful toilets, outmoded sits etc.
Lufthansa
6.8
Okay
7,136 reviews
Air France
7.5
Good
1,463 reviews

Food

7.0

Boarding

7.4

Crew

8.2

Entertainment

7.0

Comfort

7.4

Overall

7.5

Reviews

1 / 20
10.0
Excellent

SYLVIA,Apr 2025

TLV - CDG

A newer plane. The flight from TelAviv to Paris was on a new aircraft, wider seat. ,more privacy. Nice toilets. The flight from Paris to Santiago Chile was on a very old aircraft. Awful toilets, outmoded sits etc.

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Lisbon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Knoxville to Lisbon round-trip?

    Currently priced at $867, United Airlines will fly you from Knoxville to Lisbon and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and British Airways - these airlines can fly you to your destination from $885 and $890, respectively. You may be able to fly from Knoxville to Lisbon for 10% less than the average price by searching for these airlines.

  • Can I find deals for flights from Knoxville to Lisbon that include hotel bookings?

    Yes. In addition to deals on Knoxville to Lisbon flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Knoxville to Lisbon?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Lisbon.

  • Can I find deals for business class flights from Knoxville to Lisbon?

    Yes. Cheapflights offers flight deals from Knoxville to Lisbon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Knoxville to Lisbon?

    Currently, January is the cheapest month in which you can book a flight from Knoxville to Lisbon (average of $612). Flying from Knoxville to Lisbon in June is currently the most expensive (average of $1,136). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Sintra
Beja
Nazaré
Ericeira
Costa da Caparica
Evora
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Oeiras
Sesimbra
Fátima

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Top 3 airlines flying from Knoxville to Lisbon

Discover the top 3 airlines that operate flights from Knoxville to Lisbon. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$589Average$881FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$602Average$1,061FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$603Average$867FlexibilityNo cancel feeOn-time69%

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