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$1,258+ Cheap flights from Kingsport, TN to Portugal

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 3/20. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — LIS
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap flight deals from Kingsport to Portugal

Cheapest flights from Kingsport to Portugal
Explore the most affordable flight options available from Kingsport to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This KLM deal was found by Cheapflights users on 1/20. 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.
Fri 3/201:45 pm
TRI
-
LIS
2 stops14h 15m
KLM
Sat 3/2810:00 am
LIS
-
TRI
2 stops27h 50m
KLM
Deal found 1/20$1,258
This American Airlines deal was found by Cheapflights users on 1/21. 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.
Fri 3/2011:02 am
TRI
-
LIS
2 stops17h 43m
American Airlines
Sat 3/2810:40 am
LIS
-
TRI
2 stops17h 07m
American Airlines
Deal found 1/21$1,425

Find flight deals from Kingsport to Portugal

Keep the following information in mind while searching for Kingsport to Portugal flight deals. Data was last updated January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$943
(Delta)
Provider with most accurate pricing for Blountville Tri Cities TN/VA-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Blountville Tri Cities TN/VA-Lisbon Humberto Delgado flights.
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From Kingsport to Portugal
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Kingsport 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 January 21, 2026.
Use the filters below to find and compare flights from Kingsport to Portugal that are best for you.

Fly from

Kingsport

Fly to

Portugal

Route

Depart

Return

Price

BlountvilleLisbon

TRI - LIS

TRILIS

Blountville Tri Cities TN/VA

Fri 3/20

1:45 pm-8:00 am

2 stops14h 15m

Lisbon Humberto Delgado

Sat 3/28

10:00 am-9:50 am

2 stops27h 50m

$1,258

BlountvilleLisbon

TRI - LIS

TRILIS

Blountville Tri Cities TN/VA

Fri 3/20

11:02 am-8:45 am

2 stops17h 43m

Lisbon Humberto Delgado

Sat 3/28

10:40 am-11:47 pm

2 stops17h 07m

$1,425

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Best time to book a flight from Kingsport to Portugal

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

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

Currently, December is the cheapest month in which you can book a flight from Kingsport to Portugal (average of $475). Flying from Kingsport to Portugal in May is currently the most expensive (average of $1,125). 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.

Related info for your journey

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

  • How long is the flight from Kingsport to Portugal?

    KLM and American Airlines can get you from Kingsport to Portugal in just under 14h 15m. Your travel time can differ by up to 3h 28m. There are 3897 mi between Kingsport and Portugal. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Kingsport to Portugal (average of $475). Flying from Kingsport to Portugal in May is currently the most expensive (average of $1,125). 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 4 airlines flying from Kingsport to Portugal

Discover the top 4 airlines that operate flights from Kingsport 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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$477Average$949FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$510Average$1,170FlexibilityNo cancel feeOn-time69%
DeltaCheapest$521Average$913FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$602Average$1,046FlexibilityNo cancel feeOn-time71%

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