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$419+ Cheap flights from Porto (OPO) to Missouri

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — STL
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
1 adult, Economy
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Cheap flight deals from Porto to Missouri

Keep the following information in mind while searching for Porto to Missouri flight deals. Data was last updated January 14, 2026.

Round-trip from

$736
(American Airlines)

One-way from

$419
(Kiwi.com)
From Porto to Missouri
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One-way flight from Porto to Missouri
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Find flight deals from Porto to Missouri

Cheapest flights from Porto to Missouri
Explore the most affordable flight options available from Porto to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 14, 2026.

This American Airlines deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/288:20 am
OPO
-
STL
2 stops30h 43m
American Airlines
Sun 2/112:01 pm
STL
-
OPO
2 stops21h 59m
American Airlines
Deal found 1/11$736
This British Airways deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/48:20 am
OPO
-
STL
2 stops20h 24m
Multiple Airlines
Wed 2/1112:03 pm
STL
-
OPO
2 stops17h 42m
Multiple Airlines
Deal found 1/13$743
This American Airlines deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/48:20 am
OPO
-
STL
2 stops20h 24m
American Airlines
Wed 2/1110:17 am
STL
-
OPO
2 stops15h 23m
American Airlines
Deal found 1/12$747
This American Airlines deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/184:40 pm
OPO
-
MCI
2 stops22h 17m
American Airlines
Sun 2/229:42 am
MCI
-
OPO
2 stops15h 58m
American Airlines
Deal found 1/11$806
This American Airlines deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/274:40 pm
OPO
-
MCI
2 stops22h 17m
American Airlines
Fri 3/67:05 am
MCI
-
OPO
2 stops18h 35m
American Airlines
Deal found 1/13$823
This Delta deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/146:00 am
OPO
-
STL
2 stops20h 43m
Delta
Wed 1/2110:19 am
STL
-
OPO
2 stops18h 11m
Delta
Deal found 1/12$980
This Air France deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/144:10 pm
OPO
-
STL
2 stops30h 27m
Multiple Airlines
Wed 1/219:59 am
STL
-
OPO
2 stops18h 31m
Multiple Airlines
Deal found 1/13$983
This FlightHub deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/144:05 pm
OPO
-
STL
2 stops37h 54m
Lufthansa
Wed 1/213:50 pm
STL
-
OPO
1 stop13h 50m
Lufthansa
Deal found 1/12$1,132
This Air Canada deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/148:55 am
OPO
-
STL
3 stops20h 03m
Air Canada
Wed 1/214:05 pm
STL
-
OPO
2 stops19h 25m
Air Canada
Deal found 1/12$1,250

Cheapflights Fare Finder

 
Customize your flight search to find flights from Porto to Missouri 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, Cheapflights users made 2,558,603 searches. Data last updated January 14, 2026.
Use the filters below to find and compare flights from Porto to Missouri that are best for you.

Fly from

Porto

Fly to

Missouri

Route

Depart

Return

Price

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Wed 1/28

8:20 am-9:03 am

2 stops30h 43m

Lambert-St Louis

Sun 2/1

12:01 pm-4:00 pm

2 stops21h 59m

$736

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Wed 2/4

8:20 am-10:44 pm

2 stops20h 24m

Lambert-St Louis

Wed 2/11

12:03 pm-11:45 am

2 stops17h 42m

$743

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Wed 2/4

8:20 am-10:44 pm

2 stops20h 24m

Lambert-St Louis

Wed 2/11

10:17 am-7:40 am

2 stops15h 23m

$747

PortoKansas City

OPO - MCI

OPOMCI

Porto

Wed 2/18

4:40 pm-8:57 am

2 stops22h 17m

Kansas City

Sun 2/22

9:42 am-7:40 am

2 stops15h 58m

$806

PortoKansas City

OPO - MCI

OPOMCI

Porto

Fri 2/27

4:40 pm-8:57 am

2 stops22h 17m

Kansas City

Fri 3/6

7:05 am-7:40 am

2 stops18h 35m

$823

PortoKansas City

OPO - MCI

OPOMCI

Porto

Wed 5/6

12:00 pm-11:07 am

3 stops53h 07m

$419

PortoKansas City

OPO - MCI

OPOMCI

Porto

Sat 2/14

9:55 pm-9:53 am

3 stops41h 58m

$511

PortoKansas City

OPO - MCI

OPOMCI

Porto

Sun 1/25

9:15 pm-4:09 pm

2 stops48h 54m

$512

PortoKansas City

OPO - MCI

OPOMCI

Porto

Mon 1/26

9:55 pm-4:09 pm

3 stops48h 14m

$525

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Sat 5/2

10:05 pm-11:59 pm

3 stops55h 54m

$527

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/11

Showing 1-10 of 22 results
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Best time to book a flight from Porto to Missouri

Have a flexible travel schedule? Discover the best time to fly to Missouri from Porto with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Porto to Missouri
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Porto to Missouri. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Porto to Missouri?

    If you book a flight to Missouri from Porto, you will be flying from Porto, which is the city’s only airport. Porto (OPO) is located 6.8 mi from the center of Porto.

  • How long is the flight from Porto to Missouri?

    For as low as $736, American Airlines can have you in Missouri from Porto in 30h 43m. Airlines will cover a distance of 4154 mi.

  • Can I find deals for flights from Porto to Missouri that include hotel bookings?

    Yes. In addition to deals on Porto to Missouri flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Porto to Missouri?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to Missouri.

  • Can I find deals for business class flights from Porto to Missouri?

    Yes. Cheapflights offers flight deals from Porto to Missouri by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Porto to Missouri

See prices for flight routes from nearby airports that may be better suited for you.
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