How does KAYAK find such low prices on flights from Missouri to Porto?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Missouri to Porto. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Missouri to Porto?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Missouri is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Missouri to Porto?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Missouri with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Missouri to Porto?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Missouri up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$261 CHEAP FLIGHTS from Missouri to Porto

OPO

KAYAK searches hundreds of travel sites at once for deals on flights to Porto

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41 299 237 searches in the past 7 days on KAYAK

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Cheapest round-trip

$492

Typical prices: $659-$753

KLM

Sat 2/14Sat 2/21

STL - OPO • 2 stops

Cheapest one-way

$261

Multiple Airlines

Mon 1/12

STL - OPO • 3 stops

Start a new search

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 Missouri to Porto

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Missouri to Porto that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

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

Round-trip

One-way

Recent round-trip flight deals from Missouri to Porto

Sat, Feb 14 - Sat, Feb 21

11:55 am - 10:30 amSTL-OPO

16h 35m2 stops

6:00 am - 8:45 pmOPO-STL

20h 45m2 stops

$492KLM

Find Deal

Sun, Jan 11 - Fri, Jan 23

9:25 am - 7:40 amSTL-OPO

16h 15m2 stops

8:20 am - 6:14 pmOPO-STL

15h 54m2 stops

$509Iberia

Find Deal

Sun, Jan 11 - Fri, Jan 23

3:50 pm - 11:40 amSTL-OPO

13h 50m1 stop

4:15 pm - 3:29 pmOPO-STL

53h 14m2 stops

$515Multiple Airlines

Find Deal

Tue, Mar 10 - Wed, Mar 18

5:40 pm - 9:30 amSTL-OPO

10h 50m1 stop

6:00 am - 2:55 pmOPO-STL

13h 55m1 stop

$573United Airlines

Find Deal

Tue, Mar 10 - Wed, Mar 18

1:10 pm - 9:30 amSTL-OPO

15h 20m2 stops

6:00 am - 2:55 pmOPO-STL

13h 55m1 stop

$578United Airlines

Find Deal

Sun, Mar 15 - Tue, Mar 24

6:30 pm - 2:55 pmSTL-OPO

39h 25m2 stops

1:45 pm - 10:49 pmOPO-STL

38h 04m2 stops

$611Lufthansa

Find Deal

Tue, Mar 24 - Mon, Mar 30

11:33 am - 11:40 amMCI-OPO

19h 07m2 stops

4:35 pm - 9:35 pmOPO-MCI

35h 00m2 stops

$624Lufthansa

Find Deal

Sun, Mar 15 - Mon, Mar 23

4:05 pm - 12:50 pmSTL-OPO

15h 45m2 stops

4:15 pm - 10:49 pmOPO-STL

35h 34m2 stops

$651Multiple Airlines

Find Deal

Tue, Mar 10 - Fri, Mar 20

4:05 pm - 2:45 pmSTL-OPO

17h 40m2 stops

6:30 am - 3:29 pmOPO-STL

37h 59m2 stops

$741Air Canada

Find Deal

Wed, Mar 11 - Fri, Mar 20

4:05 pm - 1:15 pmSTL-OPO

16h 10m2 stops

6:30 am - 3:29 pmOPO-STL

37h 59m2 stops

$966Air Canada

Find Deal

Useful Info

Low season	February
High season	July
Cheapest flight	$261

Best time to beat the crowds with an average 17% drop in price.

Most popular time to fly with an average 21% increase in price.

Flight from St. Louis to Porto

How does KAYAK find such low prices on flights from Missouri to Porto?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Missouri to Porto.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Missouri to Porto?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Missouri is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Missouri to Porto?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Missouri with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Missouri to Porto?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Missouri up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Lamego

Guimarães

Pinhao

Chaves

Esposende

Viseu

Arcos de Valdevez

Espinho

Ponte de Lima

Caminha

Baiao

Mira

Penafiel

Santa Maria da Feira

Amares

Curia

Everything you need to know for your flight to Porto

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in Porto

Porto (OPO)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

OPO

$261 Find Cheap Flights from Missouri to Porto

KAYAK searches hundreds of travel sites at once for deals on flights to Porto

Everything you should know

Cheap Flights from Missouri to Porto

Recent round-trip flight deals from Missouri to Porto

Recent one-way flight deals from Missouri to Porto

Good to know

FAQs for booking flights from Missouri to Porto

How does KAYAK find such low prices on flights from Missouri to Porto?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Missouri to Porto.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Missouri to Porto?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Missouri is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Missouri to Porto?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Missouri with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Missouri to Porto?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Missouri up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Porto?

Everything you need to know for your flight to Porto

Information on the airport you'll fly into in Porto

Cabin class types available on flights to Missouri

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

Find direct flights for Porto

Flights to other popular destinations

Flights from domestic origins to Porto

Choose which airport to fly into in Porto

Find deals for your return flight