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St. Louis

$804+ Cheap flights from Porto (OPO) to St. Louis (STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — STL
nov. 5 — nov. 121
mar. 11/5
mar. 11/12
1 adult, Economy
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Find flight deals from Porto to St. Louis

Cheapest flights from Porto to St. Louis
Explore the most affordable flight options available from Porto to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 31, 2024.

This Delta deal was found by Cheapflights users on 10/31. 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.
sáb. 11/166:00 amOPO - STL
2 stops21h 29mDelta
mié. 11/206:30 amSTL - OPO
2 stops22h 00mDelta
Deal found 10/31$804
This Lufthansa deal was found by Cheapflights users on 10/31. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/166:00 amOPO - STL
2 stops23h 28mLufthansa
mié. 11/203:45 pmSTL - OPO
1 stop13h 55mLufthansa
Deal found 10/31$843
This Mytrip deal was found by Cheapflights users on 10/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/162:10 pmOPO - STL
3 stops32h 24mMultiple Airlines
mié. 11/2012:15 pmSTL - OPO
3 stops18h 50mMultiple Airlines
Deal found 10/31$1,087

Find flights from Porto to St. Louis within your budget

Customize your flight search to find flights from Porto to St. Louis 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 2,570,725 searches. Data last updated octubre 31, 2024.

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Depart

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Price

PortoSt. Louis

OPO - STL

OPOSTL

Porto

sáb. 11/16

6:00 am-9:29 pm

2 stops21h 29m

Lambert-St Louis

mié. 11/20

6:30 am-10:30 am

2 stops22h 00m

$804

PortoSt. Louis

OPO - STL

OPOSTL

Porto

sáb. 11/16

6:00 am-11:28 pm

2 stops23h 28m

Lambert-St Louis

mié. 11/20

3:45 pm-11:40 am

1 stop13h 55m

$843

PortoSt. Louis

OPO - STL

OPOSTL

Porto

sáb. 11/16

2:10 pm-4:34 pm

3 stops32h 24m

Lambert-St Louis

mié. 11/20

12:15 pm-1:05 pm

3 stops18h 50m

$1,087

Flights are sorted by cheapest first

Deals found on 10/31

Best time to book a flight from Porto to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis 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.

Travel insights for flights from Porto to St. Louis

Get recent, data-driven insights about flights from Porto to St. Louis including ideal travel times, pricing trends, and more.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated octubre 31, 2024.
Delta
8.0
Very good
8,835 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,835 reviews
Delta
8.0
Very good
8,835 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Lufthansa
6.8
Okay
7,182 reviews
Delta
8.0
Very good
8,835 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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

  • Can I find flights from Porto to St. Louis for under $900 on Cheapflights?

    Yes, there are multiple flights from Porto to St. Louis for under $900. The cheapest flight booked recently is on Delta for just $804, but on average you can expect to pay $911.

  • What does OPO to STL mean?

    OPO stands for Porto Airport, while STL stands for Lambert-St Louis Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

  • Can I find deals for flights from Porto to St. Louis that include extra baggage allowance?

    The amount of baggage you can bring on your Porto to St. Louis flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Porto to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Porto to St. Louis flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Porto to St. Louis that include hotel bookings?

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

  • How can I find direct flights from Porto to St. Louis?

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

  • Can I find deals for business class flights from Porto to St. Louis?

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

  • Can I find deals for flights from Porto to St. Louis that allow pets onboard?

    Many airlines flying from Porto to St. Louis offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Porto to St. Louis?

    Yes, you can often find last-minute deals on Porto to St. Louis flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Porto to St. Louis flight deals updated?

    The Porto to St. Louis flight deals you see on this page were last updated on 10/31.

  • What is the cheapest month to book a flight from Porto to St. Louis?

    Currently, September is the cheapest month in which you can book a flight from Porto to St. Louis (average of $308). Flying from Porto to St. Louis 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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