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.

$348 CHEAP FLIGHTS from Missouri to Porto

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Flight Deals

Cheap Flights from Missouri to Porto

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

Tue, Nov 10 - Tue, Nov 17

3:19 pm - 11:15 am

MCI

OPO

37h 56m

2 stops

6:00 am - 4:34 pm

OPO

MCI

16h 34m

2 stops

$703Multiple Airlines

Wed, Dec 9 - Wed, Dec 16

6:00 am - 9:30 am

MCI

OPO

21h 30m

1 stop

6:00 am - 9:49 pm

OPO

MCI

21h 49m

2 stops

$717United Airlines

Wed, Dec 9 - Tue, Dec 15

6:00 am - 9:30 am

MCI

OPO

21h 30m

1 stop

6:00 am - 11:37 pm

OPO

MCI

23h 37m

2 stops

$717United Airlines

Tue, Dec 8 - Wed, Dec 16

6:00 am - 9:30 am

MCI

OPO

21h 30m

1 stop

6:00 am - 11:37 pm

OPO

MCI

23h 37m

2 stops

$717United Airlines

Wed, Dec 9 - Thu, Dec 17

11:51 am - 9:05 am

MCI

OPO

15h 14m

1 stop

5:00 am - 8:51 pm

OPO

MCI

21h 51m

2 stops

$718Delta

Mon, Dec 7 - Wed, Dec 9

11:50 am - 11:45 am

STL

OPO

17h 55m

2 stops

4:40 pm - 10:37 am

OPO

STL

23h 57m

2 stops

$741Iberia

Wed, Nov 4 - Mon, Nov 9

9:50 am - 7:40 am

STL

OPO

15h 50m

2 stops

12:25 pm - 9:30 am

OPO

STL

27h 05m

2 stops

$763Iberia

Sun, Aug 16 - Tue, Sep 1

3:30 pm - 11:15 am

STL

OPO

13h 45m

1 stop

4:35 pm - 1:25 pm

OPO

STL

26h 50m

1 stop

$950Lufthansa

Sun, Aug 16 - Tue, Sep 1

3:30 pm - 11:15 am

STL

OPO

13h 45m

1 stop

4:35 pm - 1:25 pm

OPO

STL

26h 50m

1 stop

$1,000Lufthansa

Sun, Sep 27 - Sun, Oct 11

3:30 pm - 3:40 pm

STL

OPO

18h 10m

1 stop

12:10 pm - 1:25 pm

OPO

STL

31h 15m

1 stop

$1,017Lufthansa

Useful Info

Low season	January
High season	July
Cheapest flight	$348

Best time to beat the crowds with an average 27% drop in price.

Most popular time to fly with an average 32% 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

Viseu

Esposende

Ponte de Lima

Espinho

Arcos de Valdevez

Santa Maria da Feira

Baiao

Caminha

Mira

Penafiel

Amares

Curia

Everything you need to know for your flight to Porto

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Cabin class

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Direct Flights

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Origins

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Return flight deals

Information on the airport you'll fly into in Porto

Porto (OPO)

OPO

$348 Find Cheap Flights from Missouri to Porto - Compare and Save

Cheap Flights from Missouri to Porto

Recent round-trip flight deals from Missouri to Porto

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Low season

High season

Cheapest flight

FAQs for booking flights from Missouri to Porto

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

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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