Which airports can I use when flying from Knoxville to Porto?

Flights from Knoxville to Porto usually depart from Knoxville McGhee Tyson (TYS) and arrive at Porto (OPO).

What cabin classes can I book on flights from Knoxville to Porto?

Three cabin classes are available on flights from Knoxville to Porto: • Economy Class • Premium Economy Class • Business Class

Which airports do connecting flights from Knoxville to Porto pass through?

Most connecting flights from Knoxville to Porto pass through Newark (EWR), which handles 100% of one-stop traffic on this route.

Can I save money by using flexible dates for flights from Knoxville to Porto?

Yes. Flexible dates can save you up to 30% on flights from Knoxville to Porto. Wednesday is the cheapest departure day at $820 round-trip on average, while Monday is the most expensive at $1,164, a difference of $344. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in Porto?

Some of the most popular sights in Porto are Ribeira Square, Avenida dos Aliados and Mercado do Bolhão. These are among the most viewed places in Porto on KAYAK.

Do I need a passport to fly from Knoxville to Porto?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Have flight prices from Knoxville to Porto changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $821 to $4,092. That means the highest observed fare was about 5x higher than the lowest one.

How are flight prices from Knoxville to Porto looking right now?

One-way fares from Knoxville to Porto are currently higher than usual. Average one-way flight prices are about $1,077, which is 110% above the typical average for this route.

What is the time difference between Knoxville and Porto?

Porto is 4 hours ahead of Knoxville (Western European Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Porto Airport (OPO)?

Porto Airport (OPO) hosts 5 major car rental companies, with daily rates averaging $24 for economy cars. Top options include: • GREEN MOTION • Drive on Holiday • Klass Wagen • Goldcar Rental SP • Sixt

How much should I expect to pay for a Knoxville to Porto flight?

Round-trip flights from Knoxville to Porto range from $801 to $1,060, with an average of $934 over the past 12 months. Anything below $801 counts as a good deal.

How much is a round-trip flight from Knoxville to Porto?

Round-trip flights from Knoxville to Porto typically range from $801 to $1,060. The lowest price found in the past 5 days was $821, on British Airways.

Which airline is the cheapest to fly from Knoxville to Porto?

British Airways ($821) and United Airlines ($826) are the cheapest airlines to fly round-trip from Knoxville to Porto according to KAYAK data over the last 5 days.

What is the cheapest layover airport when flying from Knoxville to Porto?

Flights via Newark (EWR) offer the most affordable fares, with an average round-trip price of $896. Based on KAYAK data over the past 3 months.

When flying from Knoxville to Porto which airport offers the shortest layover?

Newark (EWR) had the shortest average connection time for Knoxville to Porto layovers at 7h 47m over the past 3 months.

$821 CHEAP FLIGHTS from Knoxville to Porto (TYS - OPO)

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Cheapest round-trip

$821

Typical prices: $801-$1,060

British Airways

Sun 4/8Tue 4/24

TYS - OPO • 2 stops

Cheapest one-way

$914

Typical prices: $512-$807

Iberia

Thu 4/26

TYS - OPO • 2 stops

When to travel

January

Cheapest • 45% price drop

April

Most popular

Good to know

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KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Porto!

Flight Deals

Cheap Flights from Knoxville to Porto (TYS-OPO)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from Knoxville to Porto

Thu, Apr 8 - Sat, Apr 24

8:48 pm - 8:25 pmTYS Knoxville McGhee Tyson-OPO Porto

18h 37m2 stops Chicago O'Hare Intl London Heathrow

8:40 pm - 9:21 pmOPO Porto-TYS Knoxville McGhee Tyson

29h 41m2 stops Madrid Barajas Chicago O'Hare Intl

$821British Airways

Thu, Apr 8 - Sat, Apr 24

4:16 pm - 9:45 amTYS Knoxville McGhee Tyson-OPO Porto

12h 29m1 stop Newark

6:00 am - 9:05 pmOPO Porto-TYS Knoxville McGhee Tyson

20h 05m2 stops Frankfurt am Main Chicago O'Hare Intl

$821Multiple Airlines

Thu, Apr 8 - Sat, Apr 24

7:00 am - 9:45 amTYS Knoxville McGhee Tyson-OPO Porto

21h 45m2 stops Chicago O'Hare Intl Newark

6:00 am - 9:59 amOPO Porto-TYS Knoxville McGhee Tyson

32h 59m2 stops Frankfurt am Main Chicago O'Hare Intl

$826United Airlines

Sat, Dec 12 - Sat, Dec 19

5:35 pm - 9:30 amTYS Knoxville McGhee Tyson-OPO Porto

34h 55m2 stops Chicago O'Hare Intl Newark

12:30 pm - 2:42 pmOPO Porto-TYS Knoxville McGhee Tyson

55h 12m2 stops Frankfurt am Main Washington, D.C. Dulles Intl

$884United Airlines

Sat, Dec 12 - Sat, Dec 19

12:45 pm - 9:30 amTYS Knoxville McGhee Tyson-OPO Porto

15h 45m1 stop Newark

12:30 pm - 2:42 pmOPO Porto-TYS Knoxville McGhee Tyson

55h 12m2 stops Frankfurt am Main Washington, D.C. Dulles Intl

$919United Airlines

Thu, Apr 8 - Sat, Apr 24

4:16 pm - 9:45 amTYS Knoxville McGhee Tyson-OPO Porto

12h 29m1 stop Newark

12:35 pm - 8:54 pmOPO Porto-TYS Knoxville McGhee Tyson

13h 19m1 stop Newark

$989United Airlines

Sat, Dec 12 - Sat, Dec 19

12:45 pm - 9:30 amTYS Knoxville McGhee Tyson-OPO Porto

15h 45m1 stop Newark

12:35 pm - 8:54 pmOPO Porto-TYS Knoxville McGhee Tyson

13h 19m1 stop Newark

$1,106United Airlines

Sat, Dec 12 - Sat, Dec 19

7:45 pm - 10:25 pmTYS Knoxville McGhee Tyson-OPO Porto

21h 40m2 stops Washington, D.C. Dulles Intl Frankfurt am Main

8:30 am - 12:15 amOPO Porto-TYS Knoxville McGhee Tyson

20h 45m3 stops Lisbon Humberto Delgado Toronto Pearson Intl Washington, D.C. Dulles Intl

$1,479Multiple Airlines

Sat, Dec 12 - Sat, Dec 19

4:24 pm - 5:00 pmTYS Knoxville McGhee Tyson-OPO Porto

19h 36m3 stops Chicago O'Hare Intl Dublin Lisbon Humberto Delgado

7:00 am - 12:15 amOPO Porto-TYS Knoxville McGhee Tyson

22h 15m3 stops Lisbon Humberto Delgado Toronto Pearson Intl Washington, D.C. Dulles Intl

$2,285Multiple Airlines

Sat, Dec 12 - Sat, Dec 19

2:07 pm - 6:50 amTYS Knoxville McGhee Tyson-OPO Porto

35h 43m4 stops Washington, D.C. Dulles Intl Lome Addis Ababa Bole Madrid Barajas

6:00 pm - 7:49 pmOPO Porto-TYS Knoxville McGhee Tyson

54h 49m4 stops Madrid Barajas Addis Ababa Bole Rome Fiumicino Washington, D.C. Dulles Intl

$3,674Ethiopian Air

Booking Insights

Price, demand and travel trends for Knoxville to Porto flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from Knoxville to Porto? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Knoxville to Porto departing in april.

Find deals

High season	April
Cheapest flight	$821

The most popular month to fly with an average 60% increase in travelers.

Round-trip flight from Knoxville to Porto

When to book flights from Knoxville to Porto

Are your dates flexible? Find out the best times to travel from Knoxville to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What cabin classes can I book on flights from Knoxville to Porto?
Three cabin classes are available on flights from Knoxville to Porto:

• Economy Class
• Premium Economy Class
• Business Class
Do I need a passport to fly from Knoxville to Porto?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
How much should I expect to pay for a Knoxville to Porto flight?
Round-trip flights from Knoxville to Porto range from $801 to $1,060, with an average of $934 over the past 12 months. Anything below $801 counts as a good deal.
Have flight prices from Knoxville to Porto changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $821 to $4,092. That means the highest observed fare was about 5x higher than the lowest one.
How are flight prices from Knoxville to Porto looking right now?
One-way fares from Knoxville to Porto are currently higher than usual. Average one-way flight prices are about $1,077, which is 110% above the typical average for this route.
What car rental options are available at Porto Airport (OPO)?
Porto Airport (OPO) hosts 5 major car rental companies, with daily rates averaging $24 for economy cars. Top options include:

• GREEN MOTION
• Drive on Holiday
• Klass Wagen
• Goldcar Rental SP
• Sixt
Which airports can I use when flying from Knoxville to Porto?
Flights from Knoxville to Porto usually depart from Knoxville McGhee Tyson (TYS) and arrive at Porto (OPO).
Which airports do connecting flights from Knoxville to Porto pass through?
Most connecting flights from Knoxville to Porto pass through Newark (EWR), which handles 100% of one-stop traffic on this route.
Can I save money by using flexible dates for flights from Knoxville to Porto?
Yes. Flexible dates can save you up to 30% on flights from Knoxville to Porto. Wednesday is the cheapest departure day at $820 round-trip on average, while Monday is the most expensive at $1,164, a difference of $344.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
What is the time difference between Knoxville and Porto?
Porto is 4 hours ahead of Knoxville (Western European Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.
What popular places can I visit in Porto?
Some of the most popular sights in Porto are Ribeira Square, Avenida dos Aliados and Mercado do Bolhão. These are among the most viewed places in Porto on KAYAK.

If your dates are flexible, aim for a Wednesday departure and avoid flying on Monday. On this route, Wednesday flights average $820, about $344 less than Monday fares (30% savings) based on the last 12 months.
If you can choose when to travel, plan your Knoxville to Porto trip for January. Fares historically average $509 round-trip in that month - typically $655 less than the most expensive month, which is May (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to Porto Airport.

• Ap Aeroporto Porto

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TYS - OPO

$821 Find Cheap Flights from Knoxville to Porto - Compare and Save

Everything you should know

Cheap Flights from Knoxville to Porto (TYS-OPO)

Recent round-trip flight deals from Knoxville to Porto

Recent one-way flight deals from Knoxville to Porto

Price, demand and travel trends for Knoxville to Porto flights

How much is a round-trip flight from Knoxville to Porto?

Which airline is the cheapest to fly from Knoxville to Porto?

What is the cheapest layover airport when flying from Knoxville to Porto?

When flying from Knoxville to Porto which airport offers the shortest layover?

Key details for Knoxville to Porto flights

High season

Cheapest flight

When to book flights from Knoxville to Porto

Your Knoxville to Porto flight questions, answered

Your guide to booking Knoxville to Porto flights

More options for your flight from Knoxville to Porto

Complete your trip to Porto with a hotel stay or car rental

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Cabin class types available on flights from Knoxville to Porto

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Flights from domestic origins to Porto

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