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$478+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — STL
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
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 June 30, 2025.

Round-trip from

$1,048
(British Airways)

One-way from

$478
(Kiwi.com)
From Porto to Missouri
Search Deals
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 June 30, 2025.

This British Airways deal was found by Cheapflights users on 6/30. 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 7/168:20 pmOPO - STL
2 stops28h 48mBritish Airways
Sun 7/204:52 pmSTL - OPO
2 stops21h 28mBritish Airways
Deal found 6/30$1,048
This Delta deal was found by Cheapflights users on 6/29. 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 7/306:15 amOPO - STL
2 stops20h 21mDelta
Wed 8/62:15 pmSTL - OPO
2 stops19h 15mDelta
Deal found 6/29$1,069
This Air France deal was found by Cheapflights users on 6/28. 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.
Mon 7/146:30 amOPO - STL
2 stops20h 06mMultiple Airlines
Fri 7/187:11 pmSTL - OPO
2 stops16h 59mMultiple Airlines
Deal found 6/28$1,171
This United Airlines deal was found by Cheapflights users on 6/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/166:00 amOPO - STL
2 stops18h 07mUnited Airlines
Sun 7/205:00 pmSTL - OPO
1 stop10h 45mUnited Airlines
Deal found 6/30$1,205
This American Airlines deal was found by Cheapflights users on 6/28. 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.
Tue 8/128:15 amOPO - STL
2 stops17h 06mAmerican Airlines
Tue 8/191:24 pmSTL - OPO
2 stops16h 16mAmerican Airlines
Deal found 6/28$1,221

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 June 30, 2025.
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 7/16

8:20 pm-7:08 pm

2 stops28h 48m

Lambert-St Louis

Sun 7/20

4:52 pm-8:20 pm

2 stops21h 28m

$1,048

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Wed 7/30

6:15 am-8:36 pm

2 stops20h 21m

Lambert-St Louis

Wed 8/6

2:15 pm-3:30 pm

2 stops19h 15m

$1,069

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Mon 7/14

6:30 am-8:36 pm

2 stops20h 06m

Lambert-St Louis

Fri 7/18

7:11 pm-6:10 pm

2 stops16h 59m

$1,171

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Wed 7/16

6:00 am-6:07 pm

2 stops18h 07m

Lambert-St Louis

Sun 7/20

5:00 pm-9:45 am

1 stop10h 45m

$1,205

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Tue 8/12

8:15 am-7:21 pm

2 stops17h 06m

Lambert-St Louis

Tue 8/19

1:24 pm-11:40 am

2 stops16h 16m

$1,221

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Wed 8/27

6:30 pm-2:21 pm

3 stops49h 51m

$478

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Wed 10/29

6:00 am-2:55 pm

1 stop13h 55m

$704

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Sun 8/31

8:15 am-10:15 pm

2 stops20h 00m

$730

PortoKansas City

OPO - MCI

OPOMCI

Porto

Thu 7/31

3:35 pm-5:09 pm

3 stops55h 34m

$734

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Sun 8/31

8:35 pm-11:51 pm

2 stops33h 16m

$740

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

Showing 1-10 of 12 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.

Reviews of airlines servicing Missouri

Get insights into the airlines that provide service to Missouri. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Missouri. Reviews last updated June 30, 2025.
Read through reviews of airlines operating flights from Porto to Missouri, such as Delta, United Airlines, and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,973 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,852 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,654 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Iberia
7.0
Good
2,810 reviews
Delta
8.0
Very good
7,973 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • What are the cheapest airlines to fly from Porto to Missouri one-way?

    One-way options have recently been found by users for as low as $704 on Lufthansa. Other airlines that offer cheap prices include American Airlines from $730 and Iberia from $740 one-way.

  • 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.

  • What is the cheapest month to book a flight from Porto to Missouri?

    Currently, August is the cheapest month in which you can book a flight from Porto to Missouri (average of $311). Flying from Porto to Missouri in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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