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Cheap flights from Missouri to Porto from $491

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Porto departing on 2/14. 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

Enter your travel dates to find the best prices.
Delta Logo
7:10 am - 10:30 amSTL-OPO
21h 20m2 stops
Delta Logo
6:00 am - 11:25 pmOPO-STL
23h 25m2 stops
$491Delta
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Sat, Feb 14 - Sat, Feb 21
KLM Logo
11:55 am - 10:30 amSTL-OPO
16h 35m2 stops
KLM Logo
6:00 am - 8:45 pmOPO-STL
20h 45m2 stops
$492KLM
Find Deal
Sat, Feb 14 - Sat, Feb 21
Lufthansa Logo
11:33 am - 11:40 amMCI-OPO
19h 07m2 stops
Lufthansa Logo
4:35 pm - 9:35 pmOPO-MCI
35h 00m2 stops
$624Lufthansa
Find Deal
Tue, Mar 24 - Mon, Mar 30
Lufthansa Logo
11:33 am - 11:40 amMCI-OPO
19h 07m2 stops
Lufthansa Logo
4:35 pm - 5:21 pmOPO-MCI
54h 46m2 stops
$629Lufthansa
Find Deal
Tue, Mar 24 - Mon, Mar 30
United Airlines Logo
11:36 am - 9:30 amMCI-OPO
15h 54m2 stops
United Airlines Logo
6:00 am - 9:58 pmOPO-MCI
21h 58m2 stops
$683United Airlines
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Wed, Nov 19 - Wed, Dec 3
United Airlines Logo
11:36 am - 9:30 amMCI-OPO
15h 54m2 stops
United Airlines Logo
6:00 am - 5:25 pmOPO-MCI
17h 25m2 stops
$684United Airlines
Find Deal
Wed, Nov 19 - Wed, Dec 3
Multiple Airlines Logo
4:05 pm - 10:10 pmSTL-OPO
24h 05m2 stops
Multiple Airlines Logo
8:50 am - 3:29 pmOPO-STL
12h 39m1 stop
$1,061Multiple Airlines
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Sat, Feb 14 - Sat, Feb 21
Multiple Airlines Logo
4:05 pm - 10:10 pmSTL-OPO
24h 05m2 stops
Multiple Airlines Logo
8:50 am - 11:01 amOPO-STL
32h 11m3 stops
$1,063Multiple Airlines
Find Deal
Sat, Feb 14 - Sat, Feb 21
Iberia Logo
12:01 pm - 4:00 pmSTL-OPO
22h 59m2 stops
Iberia Logo
12:25 pm - 8:58 amOPO-STL
25h 33m2 stops
$1,337Iberia
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Fri, Mar 13 - Sat, Mar 21
Iberia Logo
10:03 am - 4:00 pmSTL-OPO
23h 57m2 stops
Iberia Logo
8:20 am - 6:03 pmOPO-STL
15h 43m2 stops
$1,339Iberia
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Sat, Feb 14 - Sat, Feb 21

KLM flights from Missouri to Porto

Our best KLM deals on Missouri to Porto flight tickets
KLM
Feb 14
STL11:55 amLambert-St Louis
16h 35m
2 stops
OPO10:30 amPorto
Feb 21
OPO6:00 amPorto
20h 45m
2 stops
STL8:45 pmLambert-St Louis
$492
Find similar
KLM
Mar 13
STL11:51 amLambert-St Louis
17h 39m
2 stops
OPO10:30 amPorto
Mar 21
OPO9:25 amPorto
28h 39m
2 stops
STL9:04 amLambert-St Louis
$1,312
Find similar
KLM
Nov 6
STL7:05 amLambert-St Louis
21h 25m
2 stops
OPO10:30 amPorto
Nov 7
OPO4:10 pmPorto
35h 54m
2 stops
STL10:04 pmLambert-St Louis
$2,051
Find similar

Lufthansa flights from Missouri to Porto

Our best Lufthansa deals on Missouri to Porto flight tickets
Lufthansa
Mar 24
MCI11:33 amKansas City
19h 07m
2 stops
OPO11:40 amPorto
Mar 30
OPO4:35 pmPorto
35h 00m
2 stops
MCI9:35 pmKansas City
$624
Find similar
Lufthansa
Mar 24
MCI11:33 amKansas City
19h 07m
2 stops
OPO11:40 amPorto
Mar 30
OPO4:35 pmPorto
54h 46m
2 stops
MCI5:21 pmKansas City
$629
Find similar
Lufthansa
Mar 24
MCI11:33 amKansas City
22h 12m
2 stops
OPO2:45 pmPorto
Mar 30
OPO12:35 pmPorto
15h 54m
1 stop
MCI10:29 pmKansas City
$698
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 November 5, 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

Sat 2/14

7:10 am-10:30 am

2 stops21h 20m

Porto

Sat 2/21

6:00 am-11:25 pm

2 stops23h 25m

$491

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sat 2/14

11:55 am-10:30 am

2 stops16h 35m

Porto

Sat 2/21

6:00 am-8:45 pm

2 stops20h 45m

$492

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Tue 3/24

11:33 am-11:40 am

2 stops19h 07m

Porto

Mon 3/30

4:35 pm-9:35 pm

2 stops35h 00m

$624

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Tue 3/24

11:33 am-11:40 am

2 stops19h 07m

Porto

Mon 3/30

4:35 pm-5:21 pm

2 stops54h 46m

$629

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Wed 11/19

11:36 am-9:30 am

2 stops15h 54m

Porto

Wed 12/3

6:00 am-9:58 pm

2 stops21h 58m

$683

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Wed 11/19

11:36 am-9:30 am

2 stops15h 54m

Porto

Wed 12/3

6:00 am-5:25 pm

2 stops17h 25m

$684

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sat 2/14

4:05 pm-10:10 pm

2 stops24h 05m

Porto

Sat 2/21

8:50 am-3:29 pm

1 stop12h 39m

$1,061

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sat 2/14

4:05 pm-10:10 pm

2 stops24h 05m

Porto

Sat 2/21

8:50 am-11:01 am

3 stops32h 11m

$1,063

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Fri 3/13

12:01 pm-4:00 pm

2 stops22h 59m

Porto

Sat 3/21

12:25 pm-8:58 am

2 stops25h 33m

$1,337

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sat 2/14

10:03 am-4:00 pm

2 stops23h 57m

Porto

Sat 2/21

8:20 am-6:03 pm

2 stops15h 43m

$1,339

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 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 16% 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
LufthansaPriceFrom $549Free CancellationRating
6.8
7,555 reviews
Search Lufthansa flights
United AirlinesPriceFrom $564Free CancellationRating
7.4
9,002 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
Aveiro
Matosinhos
Braga
Lamego
Guimarães
Esposende
Chaves
Espinho
Viseu
Ponte de Lima
Arcos de Valdevez
Pinhao
Curia
Penafiel
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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