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Cheap flights from Missouri to Porto from $349

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 11/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Missouri to Porto

Cheap round-trip flights

Multiple Airlines Logo
3:14 pm - 9:30 amSTL-OPO
13h 16m2 stops
Multiple Airlines Logo
6:00 am - 1:55 pmOPO-STL
13h 55m1 stop
$508Multiple Airlines
Find Deal
lun., oct. 27 - mié., nov. 12
Lufthansa Logo
6:43 pm - 10:25 pmSTL-OPO
22h 42m2 stops
Lufthansa Logo
6:00 am - 1:55 pmOPO-STL
13h 55m1 stop
$510Lufthansa
Find Deal
lun., oct. 27 - mié., nov. 12
United Airlines Logo
8:20 am - 9:30 amSTL-OPO
20h 10m2 stops
United Airlines Logo
6:00 am - 4:35 pmOPO-STL
40h 35m2 stops
$532United Airlines
Find Deal
lun., oct. 27 - mié., nov. 12
United Airlines Logo
5:00 pm - 9:30 amMCI-OPO
10h 30m1 stop
United Airlines Logo
12:30 pm - 2:21 pmOPO-MCI
31h 51m2 stops
$533United Airlines
Find Deal
dom., nov. 16 - vie., dic. 5
Delta Logo
10:45 am - 10:30 amSTL-OPO
17h 45m2 stops
Delta Logo
11:25 am - 8:24 amOPO-STL
26h 59m2 stops
$543Delta
Find Deal
lun., nov. 10 - mié., nov. 19
Delta Logo
10:37 am - 10:30 amMCI-OPO
17h 53m2 stops
Delta Logo
6:00 am - 5:28 pmOPO-MCI
17h 28m2 stops
$547Delta
Find Deal
mié., nov. 19 - mié., dic. 3
British Airways Logo
12:52 pm - 7:40 amSTL-OPO
13h 48m2 stops
British Airways Logo
8:20 am - 8:23 pmOPO-STL
18h 03m2 stops
$551British Airways
Find Deal
lun., oct. 27 - mié., nov. 12
Air Canada Logo
4:05 pm - 6:30 pmSTL-OPO
21h 25m2 stops
Air Canada Logo
6:00 am - 3:29 pmOPO-STL
39h 29m2 stops
$559Air Canada
Find Deal
dom., oct. 26 - vie., nov. 21
Air Canada Logo
4:05 pm - 11:15 amSTL-OPO
38h 10m2 stops
Air Canada Logo
6:00 am - 3:29 pmOPO-STL
39h 29m2 stops
$609Air Canada
Find Deal
dom., oct. 26 - sáb., nov. 22
British Airways Logo
4:25 pm - 7:40 amSTL-OPO
34h 15m2 stops
British Airways Logo
8:40 pm - 11:56 pmOPO-STL
33h 16m2 stops
$648British Airways
Find Deal
sáb., nov. 1 - sáb., nov. 8

United Airlines flights from Missouri to Porto

Our best United Airlines deals on Missouri to Porto flight tickets
United Airlines
Oct 27
STL8:20 amLambert-St Louis
20h 10m
2 stops
OPO9:30 amPorto
Nov 12
OPO6:00 amPorto
40h 35m
2 stops
STL4:35 pmLambert-St Louis
$532
Find similar
United Airlines
Nov 16
MCI5:00 pmKansas City
10h 30m
1 stop
OPO9:30 amPorto
Dec 5
OPO12:30 pmPorto
31h 51m
2 stops
MCI2:21 pmKansas City
$533
Find similar
United Airlines
Nov 12
STL11:05 amLambert-St Louis
16h 25m
2 stops
OPO9:30 amPorto
Nov 19
OPO6:00 amPorto
13h 55m
1 stop
STL1:55 pmLambert-St Louis
$534
Find similar

British Airways flights from Missouri to Porto

Our best British Airways deals on Missouri to Porto flight tickets
British Airways
Oct 27
STL12:52 pmLambert-St Louis
13h 48m
2 stops
OPO7:40 amPorto
Nov 12
OPO8:20 amPorto
18h 03m
2 stops
STL8:23 pmLambert-St Louis
$551
Find similar
British Airways
Nov 1
STL4:25 pmLambert-St Louis
34h 15m
2 stops
OPO7:40 amPorto
Nov 8
OPO8:40 pmPorto
33h 16m
2 stops
STL11:56 pmLambert-St Louis
$648
Find similar

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 septiembre 19, 2025.
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

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

lun. 10/27

3:14 pm-9:30 am

2 stops13h 16m

Porto

mié. 11/12

6:00 am-1:55 pm

1 stop13h 55m

$508

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

lun. 10/27

6:43 pm-10:25 pm

2 stops22h 42m

Porto

mié. 11/12

6:00 am-1:55 pm

1 stop13h 55m

$510

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

lun. 10/27

8:20 am-9:30 am

2 stops20h 10m

Porto

mié. 11/12

6:00 am-4:35 pm

2 stops40h 35m

$532

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

dom. 11/16

5:00 pm-9:30 am

1 stop10h 30m

Porto

vie. 12/5

12:30 pm-2:21 pm

2 stops31h 51m

$533

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

lun. 11/10

10:45 am-10:30 am

2 stops17h 45m

Porto

mié. 11/19

11:25 am-8:24 am

2 stops26h 59m

$543

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

mié. 11/19

10:37 am-10:30 am

2 stops17h 53m

Porto

mié. 12/3

6:00 am-5:28 pm

2 stops17h 28m

$547

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

lun. 10/27

12:52 pm-7:40 am

2 stops13h 48m

Porto

mié. 11/12

8:20 am-8:23 pm

2 stops18h 03m

$551

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

dom. 10/26

4:05 pm-6:30 pm

2 stops21h 25m

Porto

vie. 11/21

6:00 am-3:29 pm

2 stops39h 29m

$559

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

dom. 10/26

4:05 pm-11:15 am

2 stops38h 10m

Porto

sáb. 11/22

6:00 am-3:29 pm

2 stops39h 29m

$609

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

sáb. 11/1

4:25 pm-7:40 am

2 stops34h 15m

Porto

sáb. 11/8

8:40 pm-11:56 pm

2 stops33h 16m

$648

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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 November is, on average, the cheapest month to fly to Porto from Missouri, with most prices found around $636. 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 7% 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

Direct flights

None
There are no direct flights from Missouri to Porto. There are no popular flight routes from Missouri to Porto.
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?

  • 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
United AirlinesPriceFrom $564Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
LufthansaPriceFrom $601Free CancellationRating
6.8
7,415 reviews
Search Lufthansa flights

Traveling to a place near Porto?

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

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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