HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Porto

$385+ Cheap flights from Missouri to Porto (OPO)

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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — OPO
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Missouri to Porto with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Missouri to Porto

Keep the following information in mind while searching for Missouri to Porto flight deals. Data was last updated April 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$679
(Justfly.com)

One-way from

$385
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,074
Provider with most accurate pricing for Kansas City-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Kansas City-Porto flights.
Search Deals
From Missouri to Porto
Search Deals
One-way flight from Missouri to Porto
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($286 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Missouri to Porto

Cheapest flights from Missouri to Porto
Explore the most affordable flight options available from Missouri to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.

This Travelocity deal was found by Cheapflights users on 4/1. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/511:40 amMCI - OPO
2 stops29h 55mLufthansa
Thu 11/136:00 amOPO - MCI
2 stops21h 35mLufthansa
Deal found 4/1$585
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Sat 10/254:30 pmSTL - OPO
2 stops41h 45mUnited Airlines
Mon 11/312:30 pmOPO - STL
2 stops32h 56mUnited Airlines
Deal found 4/1$599
This Gurufare deal was found by Cheapflights users on 3/31. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/144:19 pmMCI - OPO
2 stops21h 11mBritish Airways
Thu 1/158:20 amOPO - MCI
2 stops20h 05mBritish Airways
Deal found 3/31$629
This United Airlines deal was found by Cheapflights users on 3/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/142:45 pmMCI - OPO
1 stop13h 00mUnited Airlines
Thu 1/156:00 amOPO - MCI
2 stops19h 31mUnited Airlines
Deal found 3/31$639
This Lufthansa deal was found by Cheapflights users on 4/1. 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.
Wed 5/75:29 pmSTL - OPO
2 stops23h 16mLufthansa
Wed 5/146:00 amOPO - STL
2 stops23h 49mLufthansa
Deal found 4/1$732
This United deal was found by Cheapflights users on 4/1. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/58:00 amMCI - OPO
2 stops25h 15mMultiple Airlines
Thu 11/1312:30 pmOPO - MCI
3 stops51h 55mMultiple Airlines
Deal found 4/1$791
This Orbitz deal was found by Cheapflights users on 4/1. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/271:30 pmSTL - OPO
1 stop14h 05mMultiple Airlines
Sat 10/114:35 pmOPO - STL
1 stop26h 55mMultiple Airlines
Deal found 4/1$832
This American Airlines deal was found by Cheapflights users on 4/1. 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 9/191:22 pmSTL - OPO
2 stops16h 18mAmerican Airlines
Sat 9/278:15 amOPO - STL
2 stops18h 08mAmerican Airlines
Deal found 4/1$835
This Delta deal was found by Cheapflights users on 4/2. 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.
Fri 4/185:42 pmMCI - OPO
2 stops20h 53mDelta
Sun 5/49:20 amOPO - MCI
2 stops20h 39mDelta
Deal found 4/2$852
This KLM deal was found by Cheapflights users on 4/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/255:37 pmSTL - OPO
2 stops15h 58mKLM
Thu 5/111:25 amOPO - STL
2 stops18h 11mKLM
Deal found 4/1$891
This Aeromexico deal was found by Cheapflights users on 4/1. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/176:45 pmMCI - OPO
2 stops38h 45mAir France
Sun 5/49:20 amOPO - MCI
2 stops20h 39mAir France
Deal found 4/1$910
This Delta deal was found by Cheapflights users on 4/1. 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 4/1611:15 amSTL - OPO
2 stops22h 15mDelta
Sun 4/275:00 amOPO - STL
2 stops22h 36mDelta
Deal found 4/1$911

Cheapflights Fare Finder

Customize your flight search to find flights from Missouri to Porto 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 April 2, 2025.
Use the filters below to find and compare flights from Missouri to Porto that are best for you.

Fly from

Missouri

Fly to

Porto

Route

Depart

Return

Price

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Mon 9/22

2:45 pm-9:45 am

1 stop13h 00m

Porto

Thu 10/2

12:10 pm-8:53 am

2 stops26h 43m

$709

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Wed 5/7

5:29 pm-10:45 pm

2 stops23h 16m

Porto

Wed 5/14

6:00 am-11:49 pm

2 stops23h 49m

$732

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Fri 9/19

9:17 am-6:50 am

2 stops15h 33m

Porto

Thu 9/25

12:10 pm-2:18 pm

2 stops32h 08m

$742

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sat 9/27

1:30 pm-9:35 am

1 stop14h 05m

Porto

Sat 10/11

4:35 pm-1:30 pm

1 stop26h 55m

$832

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Fri 9/19

1:22 pm-11:40 am

2 stops16h 18m

Porto

Sat 9/27

8:15 am-8:23 pm

2 stops18h 08m

$835

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Fri 4/18

5:42 pm-8:35 pm

2 stops20h 53m

Porto

Sun 5/4

9:20 am-11:59 pm

2 stops20h 39m

$852

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Fri 4/25

5:37 pm-3:35 pm

2 stops15h 58m

Porto

Thu 5/1

11:25 am-11:36 pm

2 stops18h 11m

$891

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Thu 4/17

6:45 pm-3:30 pm

2 stops38h 45m

Porto

Sun 5/4

9:20 am-11:59 pm

2 stops20h 39m

$910

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Wed 4/16

11:15 am-3:30 pm

2 stops22h 15m

Porto

Sun 4/27

5:00 am-9:36 pm

2 stops22h 36m

$911

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Tue 8/5

4:00 pm-9:20 am

2 stops35h 20m

Porto

Tue 8/12

12:50 pm-12:27 pm

2 stops29h 37m

$914

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 21 results
1
2
3

Best time to book a flight from Missouri to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Missouri 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 Missouri to Porto

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

Currently, January is the cheapest month in which you can book a flight from Missouri to Porto (average of $523). Flying from Missouri to Porto in June is currently the most expensive (average of $1,081). 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.

What is the cheapest time of day to fly from MO to OPO?

Find hourly flight availability from Missouri to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 2, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Missouri to Porto as you normally would.

Rainfall in Porto by month

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

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

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

If weather is an important factor for your trip to Porto, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated April 2, 2025.
Read through reviews of airlines operating flights from Missouri to Porto, such as Delta, KLM and Air France. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,898 reviews

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,898 reviews
Delta
8.0
Very good
7,898 reviews

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,323 reviews
Delta
8.0
Very good
7,898 reviews

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,427 reviews
Delta
8.0
Very good
7,898 reviews

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,616 reviews
Delta
8.0
Very good
7,898 reviews

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Scandinavian Airlines
7.3
Good
1,328 reviews
Delta
8.0
Very good
7,898 reviews

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Missouri to Porto. 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 into for flights to Porto from Missouri?

    Located just 6.8 mi from the city center, Porto (OPO) is the airport most travelers will use when flying to Porto from Missouri.

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

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $558. American Airlines flights start at $567 while deals on Scandinavian Airlines start at $624 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Missouri to Porto 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 Missouri to Porto?

    Currently, January is the cheapest month in which you can book a flight from Missouri to Porto (average of $523). Flying from Missouri to Porto in June is currently the most expensive (average of $1,081). 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

Traveling to a place near Missouri?

Book flights to Missouri if you plan to visit one of these locations
Aveiro
Coimbra
Matosinhos
Arcos de Valdevez

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Missouri to Porto

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Lisbon flights
Newark to Lisbon flights
Boston to Lisbon flights
Dulles Intl to Lisbon flights
LaGuardia to Lisbon flights
Newark to Porto flights
O'Hare Intl to Lisbon flights
Miami to Lisbon flights
San Francisco to Lisbon flights
Boston to Ponta Delgada flights
John F Kennedy Intl to Porto flights
Los Angeles to Lisbon flights
Reagan-National to Lisbon flights
Baltimore to Lisbon flights
Philadelphia to Lisbon flights
Dallas/Fort Worth to Lisbon flights
Seattle to Lisbon flights
LaGuardia to Porto flights
Boston to Porto flights
John F Kennedy Intl to Ponta Delgada flights
Newark to Ponta Delgada flights
Hobby to Lisbon flights
Midway to Lisbon flights
Denver to Lisbon flights
Love Field to Lisbon flights
Atlanta to Lisbon flights
Dulles Intl to Porto flights
George Bush Intcntl to Lisbon flights
Stewart to Lisbon flights
Charlotte to Lisbon flights
John F Kennedy Intl to Faro flights
Newark to Faro flights
Orlando to Lisbon flights
Portland to Lisbon flights
Reagan-National to Porto flights
Minneapolis to Lisbon flights
Sky Harbor Intl to Lisbon flights
John F Kennedy Intl to Funchal flights
Baltimore to Porto flights
Tampa to Lisbon flights
O'Hare Intl to Porto flights
Austin to Lisbon flights
San Diego to Lisbon flights
Detroit to Lisbon flights
Fort Lauderdale to Lisbon flights
Raleigh to Lisbon flights
Boston to Funchal flights
Seattle to Porto flights
LaGuardia to Ponta Delgada flights
San Francisco to Porto flights

Top 2 airlines flying from Missouri to Porto

Discover the top 2 airlines that operate flights from Missouri to Porto. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$611Average$983FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$622Average$1,110FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.