What is the cheapest airline that flies from Missouri to Porto?

American Airlines, Lufthansa, and Delta are the most popular carriers operating from Missouri to Porto

What airlines fly to Porto?

United Airlines, Delta and Lufthansa are the top three most popular airlines that fly to Porto from Missouri according to our data. United Airlines is the first choice among our users, with 65% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 3 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Porto?

Flight times from Missouri to Porto vary, but if you’re flying out of St. Louis and flying into Porto (one of the most popular routes), then the duration is 10h 21m on average. Another popular route from Missouri to Porto is flying from Kansas City to Porto, which will take roughly 11h 18m. Keep in mind that layovers or delays could extend your travel time.

When did momondo last update prices for flights from Missouri to Porto Airport?

Prices for flights from Missouri to Porto Airport were last updated today.

How many operators does momondo search for flights from Missouri to Porto Airport?

There are 3 operators available for flights from Missouri to Porto Airport as of July 2025.

How old do you have to be to fly from Missouri to Porto Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Missouri to Porto Airport.

What documentation or ID do you need to fly to Porto Airport?

The travel and health documents required for your trip to Porto Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Porto Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$325 Cheap Flights from Missouri to Porto in 2025

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Find the cheapest flights from Missouri to Porto

Round-trip

One-way

Last minute

Cheap round-trip flights

5:00 pm - 9:30 amMCI-OPO

10h 30m1 stop

6:00 am - 9:58 pmOPO-MCI

21h 58m2 stops

$590United Airlines

Find Deal

mié., nov. 19 - mié., dic. 3

3:14 pm - 9:30 amSTL-OPO

12h 16m2 stops

6:00 am - 1:55 pmOPO-STL

13h 55m1 stop

$634United Airlines

Find Deal

lun., nov. 17 - dom., nov. 23

11:49 am - 9:30 amSTL-OPO

15h 41m1 stop

6:00 am - 1:55 pmOPO-STL

13h 55m1 stop

$641Lufthansa

Find Deal

lun., nov. 17 - dom., nov. 23

10:00 am - 9:30 amSTL-OPO

17h 30m2 stops

6:00 am - 9:40 pmOPO-STL

21h 40m2 stops

$644United Airlines

Find Deal

lun., nov. 10 - dom., nov. 16

3:50 pm - 3:15 pmSTL-OPO

17h 25m1 stop

6:00 am - 1:55 pmOPO-STL

13h 55m1 stop

$650Lufthansa

Find Deal

dom., nov. 16 - dom., nov. 23

7:00 am - 7:40 amSTL-OPO

18h 40m2 stops

8:40 pm - 10:29 pmOPO-STL

31h 49m2 stops

$677Iberia

Find Deal

dom., nov. 16 - sáb., nov. 22

1:30 pm - 6:30 pmSTL-OPO

47h 00m2 stops

12:05 pm - 3:44 pmOPO-STL

33h 39m2 stops

$681

Find Deal

mar., oct. 14 - mar., oct. 21

12:10 pm - 10:30 amSTL-OPO

16h 20m2 stops

4:10 pm - 4:40 pmOPO-STL

30h 30m2 stops

$691KLM

Find Deal

dom., nov. 16 - sáb., nov. 22

10:53 am - 3:55 pmMCI-OPO

23h 02m2 stops

12:20 pm - 7:13 pmOPO-MCI

36h 53m2 stops

$694Iberia

Find Deal

lun., oct. 13 - mié., oct. 22

1:30 pm - 11:30 amSTL-OPO

40h 00m2 stops

4:35 pm - 3:44 pmOPO-STL

29h 09m2 stops

$700

Find Deal

lun., oct. 13 - lun., oct. 20

United Airlines flights from Missouri to Porto

Our best United Airlines deals on Missouri to Porto flight tickets

United Airlines

Nov 19

MCI5:00 pmKansas City

10h 30m

1 stop

OPO9:30 amPorto

Dec 3

OPO6:00 amPorto

21h 58m

2 stops

MCI9:58 pmKansas City

$590

Find similar

United Airlines

Nov 17

STL3:14 pmLambert-St Louis

12h 16m

2 stops

OPO9:30 amPorto

Nov 23

OPO6:00 amPorto

13h 55m

1 stop

STL1:55 pmLambert-St Louis

$634

Find similar

United Airlines

Nov 10

STL10:00 amLambert-St Louis

17h 30m

2 stops

OPO9:30 amPorto

Nov 16

OPO6:00 amPorto

21h 40m

2 stops

STL9:40 pmLambert-St Louis

$644

Find similar

Lufthansa flights from Missouri to Porto

Our best Lufthansa deals on Missouri to Porto flight tickets

Lufthansa

Nov 17

STL11:49 amLambert-St Louis

15h 41m

1 stop

OPO9:30 amPorto

Nov 23

OPO6:00 amPorto

13h 55m

1 stop

STL1:55 pmLambert-St Louis

$641

Find similar

Lufthansa

Nov 16

STL3:50 pmLambert-St Louis

17h 25m

1 stop

OPO3:15 pmPorto

Nov 23

OPO6:00 amPorto

13h 55m

1 stop

STL1:55 pmLambert-St Louis

$650

Find similar

Lufthansa

Nov 16

STL3:50 pmLambert-St Louis

17h 25m

1 stop

OPO3:15 pmPorto

Nov 23

OPO6:00 amPorto

13h 55m

1 stop

STL1:55 pmLambert-St Louis

$651

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

mié. 11/19

5:00 pm-9:30 am

1 stop10h 30m

Porto

mié. 12/3

6:00 am-9:58 pm

2 stops21h 58m

$590

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

lun. 11/17

3:14 pm-9:30 am

2 stops12h 16m

Porto

dom. 11/23

6:00 am-1:55 pm

1 stop13h 55m

$634

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

lun. 11/17

11:49 am-9:30 am

1 stop15h 41m

Porto

dom. 11/23

6:00 am-1:55 pm

1 stop13h 55m

$641

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

lun. 11/10

10:00 am-9:30 am

2 stops17h 30m

Porto

dom. 11/16

6:00 am-9:40 pm

2 stops21h 40m

$644

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

dom. 11/16

3:50 pm-3:15 pm

1 stop17h 25m

Porto

dom. 11/23

6:00 am-1:55 pm

1 stop13h 55m

$650

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

dom. 11/16

7:00 am-7:40 am

2 stops18h 40m

Porto

sáb. 11/22

8:40 pm-10:29 pm

2 stops31h 49m

$677

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

mar. 10/14

1:30 pm-6:30 pm

2 stops47h 00m

Porto

mar. 10/21

12:05 pm-3:44 pm

2 stops33h 39m

$681

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

dom. 11/16

12:10 pm-10:30 am

2 stops16h 20m

Porto

sáb. 11/22

4:10 pm-4:40 pm

2 stops30h 30m

$691

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

lun. 10/13

10:53 am-3:55 pm

2 stops23h 02m

Porto

mié. 10/22

12:20 pm-7:13 pm

2 stops36h 53m

$694

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

lun. 10/13

1:30 pm-11:30 am

2 stops40h 00m

Porto

lun. 10/20

4:35 pm-3:44 pm

2 stops29h 09m

$700

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Missouri to Porto

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

Prices

Airlines

Other information

What is the cheapest month to fly to Porto?

The month of November is, on average, the cheapest month to fly to Porto from Missouri, with most prices found around $565. If you aren’t able to travel during the month of November, then book flights to Porto from Missouri during February instead. Flights to Porto in February, while not as cheap as those in November, still average around $706.

What is the cheapest day to depart on your flight to Porto?

The cheapest day to depart on your flight to Porto is on a Thursday when prices can be found for as low as $752. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,465. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

What is the cheapest time of day to depart on your flight to Porto?

At noon is the cheapest time of day to fly from Missouri to Porto when you can find flight prices for as low as $752. Flying to Porto at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,170 on average. Flights to Porto from Missouri in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Can stopping save me money on Missouri to Porto flights?

You could potentially save up to 34% on your flight if you consider stops on a Missouri to Porto flight.

Cheap Missouri to Porto flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to Porto

Best Price Found	$325
Fastest flight time	10h 21m
Direct flights	None
Airports in Porto	1 airport

The best one-way flight to Porto from Missouri in the past 72 hours is $325. The best round-trip flight deal from Missouri to Porto found on momondo in the last 72 hours is $590.

The fastest flight from Missouri to Porto takes 10h 21m

There are no direct flights from Missouri to Porto. Popular non-direct routes for this connection are Kansas City Airport - Porto Airport and Lambert-St Louis Airport - Porto Airport.

There is 1 airport near Porto: Porto (OPO)

Search flight deals

When did momondo last update prices for flights from Missouri to Porto Airport?
Prices for flights from Missouri to Porto Airport were last updated today.
How many operators does momondo search for flights from Missouri to Porto Airport?
There are 3 operators available for flights from Missouri to Porto Airport as of July 2025.
How old do you have to be to fly from Missouri to Porto Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Missouri to Porto Airport.
What documentation or ID do you need to fly to Porto Airport?
The travel and health documents required for your trip to Porto Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Porto Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Missouri to Porto

Compare and see reviews for airlines that fly from Missouri to Porto with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $564	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
United Airlines	PriceFrom $564	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights
Lufthansa	PriceFrom $612	Free Cancellation	Rating 6.8 7,275 reviews	Search Lufthansa flights

Aveiro

Vila Nova de Gaia

Coimbra

Matosinhos

Braga

Caminha

Guimarães

Chaves

Esposende

Lamego

Arcos de Valdevez

Espinho

Viseu

Ponte de Lima

Santa Maria da Feira

Curia

Penafiel

Mesao Frio

Pinhao

Baiao

Why use momondo?

Why should I use momondo to find a flight deal from Missouri to Porto?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Missouri to Porto. momondo saves you time and could save you money on your trip.

Can I find flights from Missouri to Porto with flexible booking policies on momondo?

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

How can momondo help me find flights from Missouri to Porto?

momondo helps you find the best flight between Missouri and Porto 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 Missouri to Porto right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Porto from Missouri. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.