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Portugal

$448+ Cheap flights from Knoxville (TYS) to Portugal

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/5. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — LIS
Apr 30 — May 71
Wed 4/30
Wed 5/7
1 adult, Economy
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Cheap flight deals from Knoxville to Portugal

Keep the following information in mind while searching for Knoxville to Portugal flight deals. Data was last updated April 25, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$886
(Mytrip)

One-way from

$448
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,045
Provider with most accurate pricing for Knoxville McGhee Tyson-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Lisbon Humberto Delgado flights.
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From Knoxville McGhee Tyson to Portugal
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One-way flight from Knoxville McGhee Tyson to Portugal
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Highest demand for flights based on searches. 32% potential increase in price ($474 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($56 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Knoxville to Portugal

Cheapest flights from Knoxville to Portugal
Explore the most affordable flight options available from Knoxville to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 25, 2025.

This British Airways deal was found by Cheapflights users on 4/25. 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.
Thu 11/2011:46 amTYS - LIS
2 stops25h 14mBritish Airways
Mon 12/18:45 pmLIS - TYS
2 stops28h 51mBritish Airways
Deal found 4/25$817
This Mytrip deal was found by Cheapflights users on 4/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/97:15 amTYS - FAO
2 stops27h 35mMultiple Airlines
Mon 6/1612:40 pmFAO - TYS
2 stops28h 48mMultiple Airlines
Deal found 4/25$886
This Mytrip deal was found by Cheapflights users on 4/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/67:15 amTYS - LIS
2 stops30h 10mMultiple Airlines
Sun 6/158:50 amLIS - TYS
2 stops32h 00mMultiple Airlines
Deal found 4/25$897
This United Airlines deal was found by Cheapflights users on 4/25. 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.
Thu 11/207:10 pmTYS - LIS
1 stop10h 05mUnited Airlines
Mon 12/111:00 amLIS - TYS
2 stops32h 42mUnited Airlines
Deal found 4/25$917
This Air Canada deal was found by Cheapflights users on 4/25. 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.
Wed 7/309:55 amTYS - LIS
3 stops18h 25mAir Canada
Sat 8/99:50 amLIS - TYS
3 stops19h 09mAir Canada
Deal found 4/25$1,207
This KLM deal was found by Cheapflights users on 4/25. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/57:10 pmTYS - FAO
2 stops20h 30mKLM
Mon 6/169:45 pmFAO - TYS
2 stops24h 27mKLM
Deal found 4/25$1,327
This United Airlines deal was found by Cheapflights users on 4/25. 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.
Fri 6/67:25 amTYS - FAO
2 stops21h 25mUnited Airlines
Mon 6/1611:40 amFAO - TYS
2 stops16h 00mUnited Airlines
Deal found 4/25$1,364
This Delta deal was found by Cheapflights users on 4/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/611:10 amTYS - FAO
2 stops21h 10mDelta
Sat 6/142:20 pmFAO - TYS
2 stops25h 26mDelta
Deal found 4/25$1,398
This American Airlines deal was found by Cheapflights users on 4/25. 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.
Sat 6/282:48 pmTYS - LIS
2 stops13h 17mAmerican Airlines
Sat 7/511:05 amLIS - TYS
1 stop14h 51mAmerican Airlines
Deal found 4/25$1,403
This British Airways deal was found by Cheapflights users on 4/25. 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.
Thu 6/51:56 pmTYS - FAO
2 stops24h 04mBritish Airways
Sat 6/148:00 pmFAO - TYS
2 stops29h 59mBritish Airways
Deal found 4/25$1,553
This FlightHub deal was found by Cheapflights users on 4/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/66:39 pmTYS - LIS
2 stops21h 56mAer Lingus
Sat 6/1410:15 pmLIS - TYS
2 stops52h 18mAer Lingus
Deal found 4/25$1,680
This Justfly.com deal was found by Cheapflights users on 4/25. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/72:25 pmTYS - FAO
2 stops15h 15mBrussels Airlines
Sun 6/1511:30 amFAO - TYS
2 stops38h 12mBrussels Airlines
Deal found 4/25$1,858

Cheapflights Fare Finder

Customize your flight search to find flights from Knoxville to Portugal 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 April 25, 2025.
Use the filters below to find and compare flights from Knoxville to Portugal that are best for you.

Fly from

Knoxville

Fly to

Portugal

Route

Depart

Return

Price

KnoxvilleFaro

TYS - FAO

TYSFAO

Knoxville McGhee Tyson

Mon 6/9

7:15 am-3:50 pm

2 stops27h 35m

Faro

Mon 6/16

12:40 pm-12:28 pm

2 stops28h 48m

$886

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Fri 6/6

7:15 am-6:25 pm

2 stops30h 10m

Lisbon Humberto Delgado

Sun 6/15

8:50 am-11:50 am

2 stops32h 00m

$897

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Mon 9/15

7:25 pm-10:30 am

1 stop10h 05m

Lisbon Humberto Delgado

Tue 9/30

11:25 am-10:35 pm

2 stops40h 10m

$951

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Wed 7/30

6:23 pm-9:05 am

1 stop9h 42m

Lisbon Humberto Delgado

Sat 8/9

11:05 am-5:25 pm

1 stop11h 20m

$1,044

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Wed 7/30

9:55 am-9:20 am

3 stops18h 25m

Lisbon Humberto Delgado

Sat 8/9

9:50 am-11:59 pm

3 stops19h 09m

$1,207

KnoxvilleFaro

TYS - FAO

TYSFAO

Knoxville McGhee Tyson

Thu 6/5

7:10 pm-8:40 pm

2 stops20h 30m

Faro

Mon 6/16

9:45 pm-5:12 pm

2 stops24h 27m

$1,327

KnoxvilleFaro

TYS - FAO

TYSFAO

Knoxville McGhee Tyson

Fri 6/6

7:25 am-9:50 am

2 stops21h 25m

Faro

Mon 6/16

11:40 am-10:40 pm

2 stops16h 00m

$1,364

KnoxvilleFaro

TYS - FAO

TYSFAO

Knoxville McGhee Tyson

Fri 6/6

11:10 am-1:20 pm

2 stops21h 10m

Faro

Sat 6/14

2:20 pm-10:46 am

2 stops25h 26m

$1,398

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sat 6/28

2:48 pm-9:05 am

2 stops13h 17m

Lisbon Humberto Delgado

Sat 7/5

11:05 am-8:56 pm

1 stop14h 51m

$1,403

KnoxvilleFaro

TYS - FAO

TYSFAO

Knoxville McGhee Tyson

Thu 6/5

1:56 pm-7:00 pm

2 stops24h 04m

Faro

Sat 6/14

8:00 pm-8:59 pm

2 stops29h 59m

$1,553

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 14 results
1
2

Best time to book a flight from Knoxville to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal 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 Portugal

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

Currently, January is the cheapest month in which you can book a flight from Knoxville to Portugal (average of $612). Flying from Knoxville to Portugal in June is currently the most expensive (average of $1,203). 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 PT?

Find hourly flight availability from Knoxville to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 25, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Knoxville to Portugal as you normally would.

Rainfall in Portugal by month

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

In terms of precipitation, rainfall in Portugal 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 Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

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

If weather is an important factor for your trip to Portugal, 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 Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated April 25, 2025.
Read reviews from past customers who have flown Delta, KLM and United Airlines from Knoxville to Portugal. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,685 reviews
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Brussels Airlines
7.4
Good
345 reviews
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,920 reviews

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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

  • What airport do you fly from for flights from Knoxville to Portugal?

    For a flight from Knoxville to Portugal, you will be flying from McGhee Tyson. Knoxville McGhee Tyson (TYS) is just 11.3 mi from the center of the city.

  • What are the most popular routes from Knoxville to Portugal?

    The most popular flight routes from Knoxville to Portugal are Knoxville McGhee Tyson - Lisbon Humberto Delgado, Knoxville McGhee Tyson - Funchal Madeira and Knoxville McGhee Tyson - Faro.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Knoxville to Portugal 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 Portugal?

    Currently, January is the cheapest month in which you can book a flight from Knoxville to Portugal (average of $612). Flying from Knoxville to Portugal in June is currently the most expensive (average of $1,203). 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

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Top 3 airlines flying from Knoxville to Portugal

Discover the top 3 airlines that operate flights from Knoxville to Portugal. 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 April 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$589Average$866FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$602Average$1,124FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$603Average$845FlexibilityNo cancel feeOn-time69%

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