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

Iberia is the most popular carrier 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.

$440 Cheap Flights from Porto to Missouri in 2026

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.

12:25 pm - 11:43 pm

OPO

STL

17h 18m

2 stops

10:14 am - 7:40 am

STL

OPO

39h 26m

2 stops

$920Iberia

Fri, Sep 11 - Mon, Sep 14

6:00 am - 8:20 pm

OPO

STL

20h 20m

2 stops

12:10 pm - 7:00 am

STL

OPO

12h 50m

1 stop

$936Multiple Airlines

Fri, Sep 11 - Mon, Sep 14

12:35 pm - 11:38 pm

OPO

STL

17h 03m

1 stop

12:28 pm - 6:55 am

STL

OPO

12h 27m

1 stop

$958Lufthansa

Fri, Sep 11 - Mon, Sep 14

8:25 am - 2:00 pm

OPO

STL

35h 35m

3 stops

8:55 am - 7:00 am

STL

OPO

16h 05m

2 stops

$1,084Multiple Airlines

Fri, Sep 11 - Mon, Sep 14

12:25 pm - 11:58 pm

OPO

MCI

17h 33m

2 stops

9:59 am - 8:30 am

MCI

OPO

16h 31m

2 stops

$1,255Air France

Tue, Aug 11 - Thu, May 27

5:00 am - 8:42 pm

OPO

STL

21h 42m

2 stops

2:10 pm - 3:25 pm

STL

OPO

19h 15m

2 stops

$1,304Delta

Thu, Aug 13 - Thu, Aug 20

12:35 pm - 11:38 pm

OPO

STL

17h 03m

1 stop

12:28 pm - 9:45 am

STL

OPO

15h 17m

1 stop

$1,322Lufthansa

Thu, Aug 13 - Thu, Aug 20

12:25 pm - 11:58 pm

OPO

MCI

17h 33m

2 stops

5:40 pm - 3:25 pm

MCI

OPO

15h 45m

2 stops

$1,357Air France

Tue, Aug 11 - Tue, May 25

8:55 am - 5:02 pm

OPO

MCI

14h 07m

1 stop

3:27 pm - 9:45 am

MCI

OPO

12h 18m

1 stop

$1,379United Airlines

Wed, Jul 15 - Sun, Jul 19

12:10 pm - 1:25 pm

OPO

STL

31h 15m

1 stop

4:53 pm - 9:45 am

STL

OPO

10h 52m

1 stop

$1,405United Airlines

Mon, Jul 13 - Fri, Jul 17

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Iberia flights from Porto to Missouri

Our best Iberia deals on Porto to Missouri flight tickets

Iberia

Sep 11

OPO12:25 pmPorto

17h 18m

2 stops

STL11:43 pmLambert-St Louis

Sep 14

STL10:14 amLambert-St Louis

39h 26m

2 stops

OPO7:40 amPorto

$920

Iberia

Jul 15

OPO8:40 pmPorto

33h 39m

2 stops

MCI12:19 amKansas City

Jul 19

MCI6:19 pmKansas City

15h 41m

2 stops

OPO4:00 pmPorto

$1,247

Iberia

Jul 13

OPO8:20 amPorto

16h 54m

2 stops

MCI7:14 pmKansas City

Jul 17

MCI1:30 pmKansas City

16h 15m

2 stops

OPO11:45 amPorto

$1,356

United Airlines flights from Porto to Missouri

Our best United Airlines deals on Porto to Missouri flight tickets

United Airlines

Jul 15

OPO8:55 amPorto

14h 07m

1 stop

MCI5:02 pmKansas City

Jul 19

MCI3:27 pmKansas City

12h 18m

1 stop

OPO9:45 amPorto

$1,379

United Airlines

Jul 13

OPO12:10 pmPorto

31h 15m

1 stop

STL1:25 pmLambert-St Louis

Jul 17

STL4:53 pmLambert-St Louis

10h 52m

1 stop

OPO9:45 amPorto

$1,405

United Airlines

Jul 12

OPO9:00 amPorto

20h 25m

2 stops

MCI11:25 pmKansas City

Jul 16

MCI3:26 pmKansas City

12h 19m

1 stop

OPO9:45 amPorto

$1,470

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Fri 9/11

12:25 pm-11:43 pm

2 stops17h 18m

Lambert-St Louis

Mon 9/14

10:14 am-7:40 am

2 stops39h 26m

$920

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Fri 9/11

6:00 am-8:20 pm

2 stops20h 20m

Lambert-St Louis

Mon 9/14

12:10 pm-7:00 am

1 stop12h 50m

$936

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Fri 9/11

12:35 pm-11:38 pm

1 stop17h 03m

Lambert-St Louis

Mon 9/14

12:28 pm-6:55 am

1 stop12h 27m

$958

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Fri 9/11

8:25 am-2:00 pm

3 stops35h 35m

Lambert-St Louis

Mon 9/14

8:55 am-7:00 am

2 stops16h 05m

$1,084

PortoKansas City

OPO - MCI

OPOMCI

Porto

Tue 8/11

12:25 pm-11:58 pm

2 stops17h 33m

Kansas City

Thu 5/27

9:59 am-8:30 am

2 stops16h 31m

$1,255

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Thu 8/13

5:00 am-8:42 pm

2 stops21h 42m

Lambert-St Louis

Thu 8/20

2:10 pm-3:25 pm

2 stops19h 15m

$1,304

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Thu 8/13

12:35 pm-11:38 pm

1 stop17h 03m

Lambert-St Louis

Thu 8/20

12:28 pm-9:45 am

1 stop15h 17m

$1,322

PortoKansas City

OPO - MCI

OPOMCI

Porto

Tue 8/11

12:25 pm-11:58 pm

2 stops17h 33m

Kansas City

Tue 5/25

5:40 pm-3:25 pm

2 stops15h 45m

$1,357

Quickest round-trip

PortoKansas City

OPO - MCI

OPOMCI

Porto

Wed 7/15

8:55 am-5:02 pm

1 stop14h 07m

Kansas City

Sun 7/19

3:27 pm-9:45 am

1 stop12h 18m

$1,379

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Mon 7/13

12:10 pm-1:25 pm

1 stop31h 15m

Lambert-St Louis

Fri 7/17

4:53 pm-9:45 am

1 stop10h 52m

$1,405

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 42% 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	21h 42m
Direct flights	None

The fastest flight from Porto to Missouri takes 21h 42m

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

Search flight deals

Frequently asked questions about flying 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.

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.