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Cheap flights from Missouri to Porto from $334

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Porto departing on 10/26. 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
1 adult, Economy, 0 bags

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Find the cheapest flights from Missouri to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
2:40 pm - 7:00 am
STL
-
OPO
34h 20m
2 stops
Air Canada Logo
11:20 am - 2:11 pm
OPO
-
STL
32h 51m
2 stops
$835Air Canada
Sun, Oct 4 - Wed, Oct 21
United Airlines Logo
4:55 pm - 9:45 am
STL
-
OPO
10h 50m
1 stop
United Airlines Logo
11:20 am - 2:18 pm
OPO
-
STL
32h 58m
2 stops
$842United Airlines
Sun, Oct 18 - Sat, Oct 24
Air Canada Logo
2:40 pm - 7:00 am
STL
-
OPO
34h 20m
2 stops
Air Canada Logo
11:20 am - 6:41 pm
OPO
-
STL
13h 21m
1 stop
$849Air Canada
Sun, Oct 4 - Wed, Oct 21
United Airlines Logo
5:36 pm - 6:50 am
STL
-
OPO
31h 14m
2 stops
United Airlines Logo
11:20 am - 2:18 pm
OPO
-
STL
32h 58m
2 stops
$850United Airlines
Sun, Oct 18 - Sat, Oct 24
United Airlines Logo
7:30 am - 9:45 am
STL
-
OPO
20h 15m
1 stop
United Airlines Logo
11:20 am - 6:26 pm
OPO
-
STL
13h 06m
1 stop
$855United Airlines
Sun, Oct 18 - Sat, Oct 24
Lufthansa Logo
3:30 pm - 3:40 pm
STL
-
OPO
18h 10m
1 stop
Lufthansa Logo
11:20 am - 6:41 pm
OPO
-
STL
13h 21m
1 stop
$925Lufthansa
Sun, Oct 4 - Wed, Oct 21
United Airlines Logo
5:39 pm - 9:45 am
MCI
-
OPO
34h 06m
2 stops
United Airlines Logo
12:15 pm - 8:34 pm
OPO
-
MCI
38h 19m
2 stops
$929United Airlines
Sat, Aug 15 - Sun, Aug 23
Lufthansa Logo
6:05 am - 6:55 am
MCI
-
OPO
18h 50m
1 stop
Lufthansa Logo
12:35 pm - 11:59 pm
OPO
-
MCI
17h 24m
1 stop
$934Lufthansa
Wed, Jul 22 - Wed, Jul 29
Air France Logo
5:40 pm - 3:25 pm
MCI
-
OPO
15h 45m
2 stops
Air France Logo
5:55 am - 4:55 pm
OPO
-
MCI
17h 00m
2 stops
$939Air France
Wed, Jul 22 - Wed, Jul 29
Multiple Airlines Logo
6:05 am - 6:55 am
MCI
-
OPO
18h 50m
1 stop
Multiple Airlines Logo
3:00 am - 5:36 pm
OPO
-
MCI
20h 36m
2 stops
$988Multiple Airlines
Fri, Jul 17 - Thu, Jul 23

United Airlines flights from Missouri to Porto

Our best United Airlines deals on Missouri to Porto flight tickets
United Airlines
Oct 18
STL4:55 pmLambert-St Louis
10h 50m
1 stop
OPO9:45 amPorto
Oct 24
OPO11:20 amPorto
32h 58m
2 stops
STL2:18 pmLambert-St Louis
$842
United Airlines
Oct 18
STL5:36 pmLambert-St Louis
31h 14m
2 stops
OPO6:50 amPorto
Oct 24
OPO11:20 amPorto
32h 58m
2 stops
STL2:18 pmLambert-St Louis
$850
United Airlines
Oct 18
STL7:30 amLambert-St Louis
20h 15m
1 stop
OPO9:45 amPorto
Oct 24
OPO11:20 amPorto
13h 06m
1 stop
STL6:26 pmLambert-St Louis
$855

Lufthansa flights from Missouri to Porto

Our best Lufthansa deals on Missouri to Porto flight tickets
Lufthansa
Oct 4
STL3:30 pmLambert-St Louis
18h 10m
1 stop
OPO3:40 pmPorto
Oct 21
OPO11:20 amPorto
13h 21m
1 stop
STL6:41 pmLambert-St Louis
$925
Lufthansa
Jul 22
MCI6:05 amKansas City
18h 50m
1 stop
OPO6:55 amPorto
Jul 29
OPO12:35 pmPorto
17h 24m
1 stop
MCI11:59 pmKansas City
$934
Lufthansa
Aug 26
STL12:10 pmLambert-St Louis
12h 50m
1 stop
OPO7:00 amPorto
Sep 2
OPO11:20 amPorto
13h 22m
1 stop
STL6:42 pmLambert-St Louis
$938

momondo Fare Finder

 
Customize your flight search to find flights from Missouri to Porto that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated June 4, 2026.
Use the filters below to find and compare flights from Missouri to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 10/4

2:40 pm-7:00 am

2 stops34h 20m

Porto

Wed 10/21

11:20 am-2:11 pm

2 stops32h 51m

$835

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 10/18

4:55 pm-9:45 am

1 stop10h 50m

Porto

Sat 10/24

11:20 am-2:18 pm

2 stops32h 58m

$842

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 10/4

2:40 pm-7:00 am

2 stops34h 20m

Porto

Wed 10/21

11:20 am-6:41 pm

1 stop13h 21m

$849

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 10/18

5:36 pm-6:50 am

2 stops31h 14m

Porto

Sat 10/24

11:20 am-2:18 pm

2 stops32h 58m

$850

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 10/18

7:30 am-9:45 am

1 stop20h 15m

Porto

Sat 10/24

11:20 am-6:26 pm

1 stop13h 06m

$855
Quickest round-trip

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 10/4

3:30 pm-3:40 pm

1 stop18h 10m

Porto

Wed 10/21

11:20 am-6:41 pm

1 stop13h 21m

$925

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Sat 8/15

5:39 pm-9:45 am

2 stops34h 06m

Porto

Sun 8/23

12:15 pm-8:34 pm

2 stops38h 19m

$929

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Wed 7/22

6:05 am-6:55 am

1 stop18h 50m

Porto

Wed 7/29

12:35 pm-11:59 pm

1 stop17h 24m

$934

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Wed 7/22

5:40 pm-3:25 pm

2 stops15h 45m

Porto

Wed 7/29

5:55 am-4:55 pm

2 stops17h 00m

$939

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Fri 7/17

6:05 am-6:55 am

1 stop18h 50m

Porto

Thu 7/23

3:00 am-5:36 pm

2 stops20h 36m

$988

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Porto from

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

What is the cheapest month to fly to Porto?

The month of February is, on average, the cheapest month to fly to Porto from Missouri, with most prices found around $460. If you aren’t able to travel during the month of February, then book flights to Porto from Missouri during March instead. Flights to Porto in March, while not as cheap as those in February, still average around $485.

Can stopping save me money on Missouri to Porto flights?

You could potentially save up to 4% 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

Fastest flight time

12h 50m

Direct flights

None
The fastest flight from Missouri to Porto takes 12h 50m
There are no direct flights from Missouri to Porto. There are no popular flight routes from Missouri to Porto.
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Frequently asked questions about flying from Missouri to Porto

  • 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?

  • 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
LufthansaPriceFrom $493Free CancellationRating
6.8
8,036 reviews
Search Lufthansa flights
American AirlinesPriceFrom $546Free CancellationRating
7.1
11,642 reviews
Search American Airlines flights
United AirlinesPriceFrom $590Free CancellationRating
7.4
9,774 reviews
Search United Airlines flights

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Braga
Aveiro
Matosinhos
Lamego
Chaves
Esposende
Pinhao
Guimarães
Espinho
Arcos de Valdevez
Viseu
Ponte de Lima
Curia
Mesao Frio
Mira
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.

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