Question 1

What is the cheapest airline to fly from Knoxville to Porto round-trip?

Accepted Answer

Our cheapest airline available from Knoxville to Porto is United Airlines. Our recent data shows that you can find tickets from as low as $658 on this airline.

Question 2

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

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Knoxville to Porto (average of $523). Flying from Knoxville to Porto in June is currently the most expensive (average of $1,029). 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.

Question 3

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

Accepted Answer

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

Question 4

E

Accepted Answer

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Question 5

E

Accepted Answer

If weather is an important factor for your trip to Porto, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Question 6

What is the cheapest day to fly round-trip from Knoxville to Porto?

Accepted Answer

Travelers have found that booking a Monday departure is the best way to save up to 26% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

Question 7

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

Accepted Answer

It’s optimal to fly from Knoxville to Porto in the evening. By choosing this option you can save up to 60% on the cost of your flight, compared to a flight at noon.

Question 8

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

Accepted Answer

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

Question 9

How can I find direct flights from Knoxville to Porto?

Accepted Answer

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

Question 10

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

Accepted Answer

Yes. Cheapflights offers flight deals from Knoxville 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.

Cheap flights from Knoxville (TYS) to Porto (OPO)

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Best time to book a flight from Knoxville to Porto

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

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

Find hourly flight availability from Knoxville 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 August 14, 2025.

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated August 14, 2025.

Read through reviews of airlines operating flights from Knoxville to Porto, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What is the cheapest airline to fly from Knoxville to Porto round-trip?

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

How can I find direct flights from Knoxville to Porto?

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

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

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