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$687+ Cheap flights from Kingsport, TN to Porto (OPO)

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 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — OPO
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Kingsport to Porto

Keep the following information in mind while searching for Kingsport to Porto flight deals. Data was last updated September 15, 2025.

Round-trip from

$687
(Delta)
From Kingsport to Porto
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Find flight deals from Kingsport to Porto

Cheapest flights from Kingsport to Porto
Explore the most affordable flight options available from Kingsport to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Delta deal was found by Cheapflights users on 9/14. 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 11/1410:12 amTRI - OPO
2 stops19h 18mDelta
Tue 11/1811:10 amOPO - TRI
2 stops16h 23mDelta
Deal found 9/14$687

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kingsport to Porto 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 September 15, 2025.
Use the filters below to find and compare flights from Kingsport to Porto that are best for you.

Fly from

Kingsport

Fly to

Porto

Route

Depart

Return

Price

BlountvillePorto

TRI - OPO

TRIOPO

Blountville Tri Cities TN/VA

Fri 11/14

10:12 am-10:30 am

2 stops19h 18m

Porto

Tue 11/18

11:10 am-10:33 pm

2 stops16h 23m

$687

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Best time to book a flight from Kingsport to Porto

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

What is the cheapest time of day to fly from K1N to OPO?

Find hourly flight availability from Kingsport to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

When flying from Kingsport to Porto, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

Find useful and relevant information for your journey from Kingsport to Porto. 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 into for flights to Porto from Kingsport?

    Porto (OPO), located 6.8 mi from the city center, is the airport you fly into when you book flights from Kingsport to Porto. 1 airline have flights to Porto from Kingsport on a regular basis. Booking flights from Kingsport to Porto should not be difficult; the airport handles an average of 0 inbound flights from Kingsport per day.

  • How long is the flight from Kingsport to Porto?

    Departing from Kingsport to Porto will take you 19h 18m. Airlines will cover a distance of 3856 mi.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Kingsport to Porto (average of $523). Flying from Kingsport to Porto in June is currently the most expensive (average of $1,027). 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 Porto?

Book flights to Porto if you plan to visit one of these locations
Aveiro
Arcos de Valdevez
Coimbra

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Top airline flying from Kingsport to Porto

Discover the top airline that operate flights from Kingsport to Porto. 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$658Average$1,121FlexibilityNo cancel feeOn-time69%

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