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

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

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

Prices for flights from Porto Airport to Missouri are refreshed on a daily basis.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Porto Airport to Missouri.

What documentation or ID do you need to fly to Missouri?

The travel and health documents you'll need for your trip to Missouri may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Missouri. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$412 Cheap Flights from Porto to Missouri in 2026

1 adult

0 bags

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Porto to Missouri

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 10:56 am

OPO

STL

34h 56m

2 stops

11:15 am - 9:45 am

STL

OPO

16h 30m

2 stops

$927United Airlines

Fri, Apr 10 - Tue, Apr 14

12:25 pm - 10:17 pm

OPO

STL

39h 52m

2 stops

11:45 am - 4:00 pm

STL

OPO

22h 15m

2 stops

$977American Airlines

Fri, May 1 - Tue, May 5

5:00 am - 4:55 pm

OPO

MCI

17h 55m

2 stops

5:42 pm - 6:10 pm

MCI

OPO

18h 28m

2 stops

$1,000Delta

Wed, Apr 8 - Sun, Apr 12

9:00 am - 7:23 pm

OPO

STL

16h 23m

2 stops

1:05 pm - 6:50 am

STL

OPO

11h 45m

1 stop

$1,000United Airlines

Wed, Jun 3 - Sun, Jun 7

6:00 am - 10:30 pm

OPO

MCI

22h 30m

2 stops

6:00 am - 9:45 am

MCI

OPO

21h 45m

1 stop

$1,001United Airlines

Wed, Apr 8 - Sun, Apr 12

12:35 pm - 10:30 pm

OPO

MCI

15h 55m

1 stop

6:00 am - 9:45 am

MCI

OPO

21h 45m

1 stop

$1,007United Airlines

Wed, Apr 8 - Sun, Apr 12

6:00 am - 9:59 pm

OPO

MCI

21h 59m

2 stops

1:05 pm - 11:15 am

MCI

OPO

16h 10m

2 stops

$1,009United Airlines

Wed, Apr 15 - Sun, Apr 19

12:05 pm - 11:31 pm

OPO

MCI

17h 26m

2 stops

3:22 pm - 6:30 pm

MCI

OPO

45h 08m

2 stops

$1,068Multiple Airlines

Tue, May 5 - Fri, May 15

8:40 pm - 10:19 pm

OPO

STL

31h 39m

2 stops

11:45 am - 4:00 pm

STL

OPO

22h 15m

2 stops

$1,153Iberia

Sat, May 9 - Sat, May 16

12:35 pm - 10:18 pm

OPO

MCI

15h 43m

1 stop

8:00 am - 11:25 am

MCI

OPO

21h 25m

2 stops

$1,217Multiple Airlines

Tue, May 5 - Fri, May 15

American Airlines flights from Porto to Missouri

Our best American Airlines deals on Porto to Missouri flight tickets

American Airlines

May 1

OPO12:25 pmPorto

39h 52m

2 stops

STL10:17 pmLambert-St Louis

May 5

STL11:45 amLambert-St Louis

22h 15m

2 stops

OPO4:00 pmPorto

$977

American Airlines

Jun 3

OPO8:20 amPorto

38h 39m

2 stops

STL4:59 pmLambert-St Louis

Jun 7

STL5:14 amLambert-St Louis

20h 26m

2 stops

OPO7:40 amPorto

$1,071

American Airlines

Jun 3

OPO8:20 amPorto

32h 17m

2 stops

STL10:37 amLambert-St Louis

Jun 7

STL5:14 amLambert-St Louis

20h 26m

2 stops

OPO7:40 amPorto

$1,099

United Airlines flights from Porto to Missouri

Our best United Airlines deals on Porto to Missouri flight tickets

United Airlines

Apr 10

OPO6:00 amPorto

23h 57m

2 stops

STL11:57 pmLambert-St Louis

Apr 14

STL6:15 amLambert-St Louis

21h 30m

1 stop

OPO9:45 amPorto

$927

United Airlines

Jun 3

OPO9:00 amPorto

13h 07m

1 stop

STL4:07 pmLambert-St Louis

Jun 7

STL1:05 pmLambert-St Louis

11h 45m

1 stop

OPO6:50 amPorto

$1,000

United Airlines

Apr 8

OPO6:00 amPorto

22h 30m

2 stops

MCI10:30 pmKansas City

Apr 12

MCI6:00 amKansas City

21h 45m

1 stop

OPO9:45 amPorto

$1,001

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Fri 4/10

6:00 am-10:56 am

2 stops34h 56m

Lambert-St Louis

Tue 4/14

11:15 am-9:45 am

2 stops16h 30m

$927

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Fri 5/1

12:25 pm-10:17 pm

2 stops39h 52m

Lambert-St Louis

Tue 5/5

11:45 am-4:00 pm

2 stops22h 15m

$977

PortoKansas City

OPO - MCI

OPOMCI

Porto

Wed 4/8

5:00 am-4:55 pm

2 stops17h 55m

Kansas City

Sun 4/12

5:42 pm-6:10 pm

2 stops18h 28m

$1,000

Quickest round-trip

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Wed 6/3

9:00 am-7:23 pm

2 stops16h 23m

Lambert-St Louis

Sun 6/7

1:05 pm-6:50 am

1 stop11h 45m

$1,000

PortoKansas City

OPO - MCI

OPOMCI

Porto

Wed 4/8

6:00 am-10:30 pm

2 stops22h 30m

Kansas City

Sun 4/12

6:00 am-9:45 am

1 stop21h 45m

$1,001

PortoKansas City

OPO - MCI

OPOMCI

Porto

Wed 4/8

12:35 pm-10:30 pm

1 stop15h 55m

Kansas City

Sun 4/12

6:00 am-9:45 am

1 stop21h 45m

$1,007

PortoKansas City

OPO - MCI

OPOMCI

Porto

Wed 4/15

6:00 am-9:59 pm

2 stops21h 59m

Kansas City

Sun 4/19

1:05 pm-11:15 am

2 stops16h 10m

$1,009

PortoKansas City

OPO - MCI

OPOMCI

Porto

Tue 5/5

12:05 pm-11:31 pm

2 stops17h 26m

Kansas City

Fri 5/15

3:22 pm-6:30 pm

2 stops45h 08m

$1,068

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Sat 5/9

8:40 pm-10:19 pm

2 stops31h 39m

Lambert-St Louis

Sat 5/16

11:45 am-4:00 pm

2 stops22h 15m

$1,153

PortoKansas City

OPO - MCI

OPOMCI

Porto

Tue 5/5

12:35 pm-10:18 pm

1 stop15h 43m

Kansas City

Fri 5/15

8:00 am-11:25 am

2 stops21h 25m

$1,217

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 Porto to Missouri

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

Can stopping save me money on Porto to Missouri flights?

You could potentially save up to 22% on your flight if you consider stops on a Porto to Missouri flight.

Cheap Porto to Missouri flight deals and tips

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

Fastest flight time	17h 26m
Direct flights	None

The fastest flight from Porto to Missouri takes 17h 26m

There are no direct flights from Porto to Missouri. There are no popular flight routes from Porto to Missouri.

Search flight deals

When did momondo last update prices for flights from Porto Airport to Missouri?
Prices for flights from Porto Airport to Missouri are refreshed on a daily basis.
How old do you have to be to fly from Porto Airport to Missouri?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Porto Airport to Missouri.
What documentation or ID do you need to fly to Missouri?
The travel and health documents you'll need for your trip to Missouri may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Missouri. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Missouri from Porto.

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

All flight searches from Porto to Missouri on momondo can be filtered to show those which offer flexible booking policies.

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

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

Yes. momondo can track prices for Porto to Missouri flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.