Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Missouri to Porto from $422

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 7/7. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Missouri to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:45 am - 9:45 am
STL
-
OPO
20h 00m
2 stops
United Airlines Logo
6:00 am - 10:28 am
OPO
-
STL
34h 28m
2 stops
$492United Airlines
Sun, Apr 19 - Tue, Apr 28
American Airlines Logo
12:25 pm - 11:45 am
STL
-
OPO
17h 20m
2 stops
American Airlines Logo
8:20 am - 7:33 pm
OPO
-
STL
17h 13m
2 stops
$500American Airlines
Wed, Apr 15 - Wed, Apr 22
British Airways Logo
5:21 pm - 8:20 pm
STL
-
OPO
20h 59m
2 stops
British Airways Logo
12:25 pm - 8:57 am
OPO
-
STL
26h 32m
2 stops
$524British Airways
Sun, Apr 19 - Tue, Apr 28
Lufthansa Logo
3:30 pm - 11:25 pm
STL
-
OPO
25h 55m
2 stops
Lufthansa Logo
6:20 am - 9:08 pm
OPO
-
STL
20h 48m
2 stops
$555Lufthansa
Sun, Apr 19 - Tue, Apr 28
British Airways Logo
5:21 pm - 8:20 pm
STL
-
OPO
20h 59m
2 stops
British Airways Logo
8:40 pm - 7:30 pm
OPO
-
STL
28h 50m
1 stop
$561British Airways
Sun, Apr 19 - Tue, Apr 28
Multiple Airlines Logo
5:42 pm - 3:25 pm
MCI
-
OPO
15h 43m
2 stops
Multiple Airlines Logo
11:25 am - 11:50 pm
OPO
-
MCI
18h 25m
2 stops
$579Multiple Airlines
Mon, Mar 30 - Thu, Apr 23
Multiple Airlines Logo
8:00 am - 6:30 pm
MCI
-
OPO
28h 30m
2 stops
Multiple Airlines Logo
6:00 am - 11:01 pm
OPO
-
MCI
23h 01m
2 stops
$595Multiple Airlines
Fri, May 1 - Fri, May 8
Delta Logo
5:40 pm - 3:25 pm
MCI
-
OPO
15h 45m
2 stops
Delta Logo
5:00 am - 10:36 pm
OPO
-
MCI
23h 36m
2 stops
$605Delta
Sat, May 9 - Tue, May 19
Lufthansa Logo
3:30 pm - 11:15 am
STL
-
OPO
13h 45m
1 stop
Lufthansa Logo
4:35 pm - 1:25 pm
OPO
-
STL
26h 50m
1 stop
$608Lufthansa
Sun, Apr 19 - Tue, Apr 28
Delta Logo
5:40 pm - 3:25 pm
MCI
-
OPO
15h 45m
2 stops
Delta Logo
11:25 am - 8:47 pm
OPO
-
MCI
39h 22m
2 stops
$610Delta
Sat, May 9 - Thu, May 14

American Airlines flights from Missouri to Porto

Our best American Airlines deals on Missouri to Porto flight tickets
American Airlines
Apr 15
STL12:25 pmLambert-St Louis
17h 20m
2 stops
OPO11:45 amPorto
Apr 22
OPO8:20 amPorto
17h 13m
2 stops
STL7:33 pmLambert-St Louis
$500
American Airlines
Apr 14
MCI6:18 amKansas City
19h 22m
2 stops
OPO7:40 amPorto
Apr 29
OPO12:25 pmPorto
17h 42m
2 stops
MCI12:07 amKansas City
$513

Lufthansa flights from Missouri to Porto

Our best Lufthansa deals on Missouri to Porto flight tickets
Lufthansa
Apr 19
STL3:30 pmLambert-St Louis
25h 55m
2 stops
OPO11:25 pmPorto
Apr 28
OPO6:20 amPorto
20h 48m
2 stops
STL9:08 pmLambert-St Louis
$555
Lufthansa
Apr 19
STL3:30 pmLambert-St Louis
13h 45m
1 stop
OPO11:15 amPorto
Apr 28
OPO4:35 pmPorto
26h 50m
1 stop
STL1:25 pmLambert-St Louis
$608
Lufthansa
Mar 30
MCI6:40 pmKansas City
22h 10m
2 stops
OPO10:50 pmPorto
Apr 23
OPO12:35 pmPorto
15h 55m
1 stop
MCI10:30 pmKansas City
$628

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 February 6, 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

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 4/19

7:45 am-9:45 am

2 stops20h 00m

Porto

Tue 4/28

6:00 am-10:28 am

2 stops34h 28m

$492

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Wed 4/15

12:25 pm-11:45 am

2 stops17h 20m

Porto

Wed 4/22

8:20 am-7:33 pm

2 stops17h 13m

$500

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 4/19

5:21 pm-8:20 pm

2 stops20h 59m

Porto

Tue 4/28

12:25 pm-8:57 am

2 stops26h 32m

$524

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 4/19

3:30 pm-11:25 pm

2 stops25h 55m

Porto

Tue 4/28

6:20 am-9:08 pm

2 stops20h 48m

$555

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 4/19

5:21 pm-8:20 pm

2 stops20h 59m

Porto

Tue 4/28

8:40 pm-7:30 pm

1 stop28h 50m

$561

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Mon 3/30

5:42 pm-3:25 pm

2 stops15h 43m

Porto

Thu 4/23

11:25 am-11:50 pm

2 stops18h 25m

$579

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Fri 5/1

8:00 am-6:30 pm

2 stops28h 30m

Porto

Fri 5/8

6:00 am-11:01 pm

2 stops23h 01m

$595

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Sat 5/9

5:40 pm-3:25 pm

2 stops15h 45m

Porto

Tue 5/19

5:00 am-10:36 pm

2 stops23h 36m

$605

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 4/19

3:30 pm-11:15 am

1 stop13h 45m

Porto

Tue 4/28

4:35 pm-1:25 pm

1 stop26h 50m

$608

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Sat 5/9

5:40 pm-3:25 pm

2 stops15h 45m

Porto

Thu 5/14

11:25 am-8:47 pm

2 stops39h 22m

$610

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

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

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

Fastest flight time

15h 00m

Direct flights

None
The fastest flight from Missouri to Porto takes 15h 00m
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
American AirlinesPriceFrom $460Free CancellationRating
7.2
11,248 reviews
Search American Airlines flights
DeltaPriceFrom $492Free CancellationRating
7.9
8,162 reviews
Search Delta flights
LufthansaPriceFrom $520Free CancellationRating
6.8
7,769 reviews
Search Lufthansa flights
United AirlinesPriceFrom $564Free CancellationRating
7.4
9,245 reviews
Search United Airlines flights
Air CanadaPriceFrom $787Free CancellationRating
7.1
10,697 reviews
Search Air Canada 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
Esposende
Lamego
Guimarães
Espinho
Chaves
Pinhao
Arcos de Valdevez
Viseu
Ponte de Lima
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.

An easier way to manage your Porto trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 3/8
Sun 3/15
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal