Which airports can I use when flying from Porto to St. Louis?

Flights from Porto to St. Louis usually depart from Porto (OPO) and arrive at Lambert-St Louis (STL).

What cabin classes can I book on flights from Porto to St. Louis?

Only Economy Class is available on flights from Porto to St. Louis.

Which airports do connecting flights from Porto to St. Louis pass through?

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

What popular places can I visit in St. Louis?

Some of the most popular sights in St. Louis are Busch Stadium, Enterprise Center and America's Center Convention Complex. These are among the most viewed places in St. Louis on KAYAK.

How long is a flight from Porto to St. Louis?

A nonstop flight from Porto to St. Louis takes 00m, covering 4,154 miles.

Do I need a passport to fly from Porto to St. Louis?

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 Porto to St. Louis 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 $971 to $3,953. That means the highest observed fare was about 4x higher than the lowest one.

How are flight prices from Porto to St. Louis looking right now?

One-way fares from Porto to St. Louis are currently higher than usual. Average one-way flight prices are about $1,924, which is 100% above the typical average for this route.

What is the time difference between Porto and St. Louis?

St. Louis is 5 hours behind Porto (Central Time vs Western European Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Lambert-St Louis Airport (STL)?

Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates averaging $78 for economy cars. Top options include: • Hertz • Budget • Alamo • Enterprise Rent-A-Car • Payless

How much is a round-trip flight from Porto to St. Louis?

Round-trip flights from Porto to St. Louis typically range from $1,083 to $1,083. The lowest price found in the past 5 days was $971, on United Airlines.

Which airline is the cheapest to fly from Porto to St. Louis?

United Airlines ($971) offered the cheapest round-trip ticket from Porto to St. Louis in the last 5 days.

What is the cheapest layover airport when flying from Porto to St. Louis?

Flights via Newark (EWR) offer the most affordable fares, with an average round-trip price of $1,083. Based on KAYAK data over the past 3 months.

When flying from Porto to St. Louis which airport offers the shortest layover?

Newark (EWR) had the shortest average connection time for Porto to St. Louis layovers at 6h 46m over the past 3 months.

$526 CHEAP FLIGHTS from Porto to St. Louis (OPO - STL)

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Cheapest round-trip

$971

Typical prices: $1,083-$1,083

United Airlines

Mon 11/12Fri 11/16

OPO - STL • 2 stops

Cheapest one-way

$526

Typical prices: $795-$1,052

Multiple Airlines

Sat 2/17

OPO - STL • 3 stops

Nonstop flights

Not available

There are currently no direct flights between Porto and St. Louis. You'll need to take a connecting flight to reach the destination.

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Flight Deals

Cheap Flights from Porto to St. Louis (OPO-STL)

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

Round-trip

One-way

Recent round-trip flight deals from Porto to St. Louis

Sun, Feb 7 - Sun, Feb 21

6:00 am - 1:45 pmOPO Porto-STL Lambert-St Louis

13h 45m1 stop Frankfurt am Main

9:52 am - 9:30 amSTL Lambert-St Louis-OPO Porto

17h 38m1 stop Newark

$944Lufthansa

Sun, Jan 31 - Wed, Feb 17

6:00 am - 1:45 pmOPO Porto-STL Lambert-St Louis

13h 45m1 stop Frankfurt am Main

3:40 pm - 3:20 pmSTL Lambert-St Louis-OPO Porto

17h 40m1 stop Frankfurt am Main

$945Lufthansa

Sun, Jan 31 - Wed, Feb 17

6:00 am - 1:45 pmOPO Porto-STL Lambert-St Louis

13h 45m1 stop Frankfurt am Main

9:52 am - 11:30 pmSTL Lambert-St Louis-OPO Porto

31h 38m2 stops Newark Munich Franz Josef Strauss

$947Lufthansa

Sun, Feb 7 - Sun, Feb 21

6:00 am - 1:45 pmOPO Porto-STL Lambert-St Louis

13h 45m1 stop Frankfurt am Main

9:52 am - 11:40 amSTL Lambert-St Louis-OPO Porto

19h 48m2 stops Newark Frankfurt am Main

$949Lufthansa

Sun, Feb 7 - Sun, Feb 21

6:00 am - 9:49 pmOPO Porto-STL Lambert-St Louis

21h 49m2 stops Frankfurt am Main Newark

9:52 am - 11:40 amSTL Lambert-St Louis-OPO Porto

19h 48m2 stops Newark Frankfurt am Main

$959Lufthansa

Wed, Dec 9 - Wed, Dec 16

6:00 am - 1:45 pmOPO Porto-STL Lambert-St Louis

13h 45m1 stop Frankfurt am Main

6:00 am - 9:30 amSTL Lambert-St Louis-OPO Porto

21h 30m2 stops Houston George Bush Intcntl Newark

$966United Airlines

Thu, Nov 12 - Mon, Nov 16

6:00 am - 11:24 pmOPO Porto-STL Lambert-St Louis

23h 24m2 stops Frankfurt am Main Chicago O'Hare Intl

1:08 pm - 9:30 amSTL Lambert-St Louis-OPO Porto

14h 22m2 stops Chicago O'Hare Intl Newark

$971United Airlines

Sun, Jan 31 - Wed, Feb 17

6:00 am - 9:50 amOPO Porto-STL Lambert-St Louis

33h 50m2 stops Frankfurt am Main Newark

5:59 pm - 9:30 amSTL Lambert-St Louis-OPO Porto

57h 31m2 stops Houston George Bush Intcntl Newark

$972United Airlines

Fri, Nov 13 - Tue, Nov 17

6:00 am - 1:45 pmOPO Porto-STL Lambert-St Louis

13h 45m1 stop Frankfurt am Main

9:59 am - 9:30 amSTL Lambert-St Louis-OPO Porto

17h 31m1 stop Newark

$984United Airlines

Thu, Nov 12 - Mon, Nov 16

6:00 am - 11:24 pmOPO Porto-STL Lambert-St Louis

23h 24m2 stops Frankfurt am Main Chicago O'Hare Intl

11:29 am - 9:30 amSTL Lambert-St Louis-OPO Porto

16h 01m1 stop Newark

$989United Airlines

Booking Insights

Price, demand and travel trends for Porto to St. Louis 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 Porto to St. Louis? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Porto to St. Louis departing in november.

Find deals

Cheapest flight	$526

One-way flight from Porto to St. Louis

When to book flights from Porto to St. Louis

Are your dates flexible? Find out the best times to travel from Porto to St. Louis 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 Porto to St. Louis?
Only Economy Class is available on flights from Porto to St. Louis.
How long is a flight from Porto to St. Louis?
A nonstop flight from Porto to St. Louis takes 00m, covering 4,154 miles.
Do I need a passport to fly from Porto to St. Louis?
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 Porto to St. Louis 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 $971 to $3,953. That means the highest observed fare was about 4x higher than the lowest one.
How are flight prices from Porto to St. Louis looking right now?
One-way fares from Porto to St. Louis are currently higher than usual. Average one-way flight prices are about $1,924, which is 100% above the typical average for this route.
What car rental options are available at Lambert-St Louis Airport (STL)?
Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates averaging $78 for economy cars. Top options include:

• Hertz
• Budget
• Alamo
• Enterprise Rent-A-Car
• Payless
Which airports can I use when flying from Porto to St. Louis?
Flights from Porto to St. Louis usually depart from Porto (OPO) and arrive at Lambert-St Louis (STL).
Which airports do connecting flights from Porto to St. Louis pass through?
Most connecting flights from Porto to St. Louis pass through Newark (EWR), which handles 100% of one-stop traffic on this route.
What is the time difference between Porto and St. Louis?
St. Louis is 5 hours behind Porto (Central Time vs Western European Time). Plan for the time shift when scheduling connections or first-day activities.
What popular places can I visit in St. Louis?
Some of the most popular sights in St. Louis are Busch Stadium, Enterprise Center and America's Center Convention Complex. These are among the most viewed places in St. Louis on KAYAK.

If you're arriving late at night and need somewhere to stay, check out these hotels close to Lambert-St Louis Airport.

• Renaissance St. Louis Airport Hotel
• Drury Inn & Suites St. Louis Airport
• DoubleTree by Hilton St. Louis Airport

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OPO - STL

$526 Find Cheap Flights from Porto to St. Louis - Compare and Save

Everything you should know

Cheap Flights from Porto to St. Louis (OPO-STL)

Recent round-trip flight deals from Porto to St. Louis

Recent one-way flight deals from Porto to St. Louis

Price, demand and travel trends for Porto to St. Louis flights

How much is a round-trip flight from Porto to St. Louis?

Which airline is the cheapest to fly from Porto to St. Louis?

What is the cheapest layover airport when flying from Porto to St. Louis?

When flying from Porto to St. Louis which airport offers the shortest layover?

Key details for Porto to St. Louis flights

Cheapest flight

When to book flights from Porto to St. Louis

Your Porto to St. Louis flight questions, answered

Your guide to booking Porto to St. Louis flights

More options for your flight from Porto to St. Louis

Complete your trip to St. Louis with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Porto to St. Louis

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Flights from domestic origins to St. Louis

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