Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Porto to St. Louis from $829

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Porto to St. Louis departing on 7/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Porto to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from Porto to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.
British Airways Logo
8:40 pm - 6:33 pmOPO-STL
27h 53m2 stops
British Airways Logo
7:19 pm - 8:35 pmSTL-OPO
19h 16m2 stops
$978British Airways
Find Deal
Tue, May 13 - Sat, May 17
 Logo
4:35 pm - 1:30 pmOPO-STL
26h 55m1 stop
 Logo
7:30 am - 6:30 pmSTL-OPO
29h 00m2 stops
$1,015
Find Deal
Tue, May 13 - Sat, May 17
 Logo
7:00 am - 9:48 pmOPO-STL
20h 48m3 stops
 Logo
1:30 pm - 6:15 pmSTL-OPO
22h 45m2 stops
$1,389
Find Deal
Tue, May 13 - Sat, May 17
 Logo
7:00 am - 9:48 pmOPO-STL
20h 48m3 stops
 Logo
8:00 am - 10:50 amSTL-OPO
20h 50m3 stops
$1,455
Find Deal
Tue, May 13 - Sat, May 17
United Airlines Logo
12:35 pm - 11:46 pmOPO-STL
17h 11m1 stop
United Airlines Logo
11:49 am - 9:45 amSTL-OPO
15h 56m1 stop
$1,556United Airlines
Find Deal
Tue, May 13 - Sat, May 17

See travel insights to St. Louis from

How to get the cheapest flight ticket from Porto to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Porto to Lambert-St Louis?

Turkish Airlines is the most popular carrier operating from Porto to Lambert-St Louis

When to book flights from Porto to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Porto to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Porto to St. Louis (OPO to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Porto to St. Louis

Best Price Found

$829

Fastest flight time

14h 30m

Direct flights

None

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Porto in the past 72 hours is $829. The best round-trip flight deal from Porto to St. Louis found on momondo in the last 72 hours is $978.
The fastest flight from Porto to St. Louis takes 14h 30m
There are no direct flights from Porto to St. Louis. Popular non-direct route for this connection is Porto Airport - Lambert-St Louis Airport.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • How far is Porto to Lambert-St Louis by plane?

    There are 4156.0 mi between Porto and Lambert-St Louis. A reasonable flight in good conditions will take 17h 11m.

  • When did momondo last update prices for flights from Porto Airport to Lambert-St Louis Airport?

    Prices for flights from Porto Airport to Lambert-St Louis Airport refresh daily.

  • How old do you have to be to fly from Porto Airport to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Porto Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.


Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Florissant
Maryland Heights
Hermann
Fairview Heights
Collinsville
Fenton
Farmington
O'Fallon
St. Peters
Wentzville
Alton
Glencoe
Eureka
Edwardsville
Festus
Clayton
Grafton
Litchfield

Why use momondo?

Why should I use momondo to find a flight deal from Porto to St. Louis?

It is quick and easy to find Porto to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

Can I find flights from Porto to St. Louis with flexible booking policies on momondo?

Yes. All flights to St. Louis from Porto on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Porto to St. Louis?

momondo helps you find the best flight between Porto and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Porto to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Porto to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
Sun 5/4
Sun 5/11

Find better results for your trip to the United States