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$443+ Cheap flights from Kansas City (MCI) 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — OPO
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Kansas City to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Kansas City (MCI) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$532
(United Airlines)

One-way from

$443
(United Airlines)

Popular in

July

Cheapest in

January

Average price

$866
From Kansas City to Porto
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One-way flight from Kansas City to Porto
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Highest demand for flights based on searches. 21% potential increase in price ($244 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Kansas City to Porto

Cheapest flights from Kansas City to Porto
Explore the most affordable flight options available from Kansas City to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:00 amMCI - OPO
2 stops21h 30mUnited Airlines
Wed 12/36:00 amOPO - MCI
2 stops21h 58mUnited Airlines
Deal found 9/11$544
This Delta deal was found by Cheapflights users on 9/9. 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.
Mon 9/222:13 pmMCI - OPO
2 stops19h 17mDelta
Thu 10/26:30 amOPO - MCI
2 stops23h 14mDelta
Deal found 9/9$706
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Fri 10/246:05 amMCI - OPO
2 stops21h 40mUnited Airlines
Fri 10/3112:30 pmOPO - MCI
2 stops25h 38mUnited Airlines
Deal found 9/9$759
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Mon 11/245:00 pmMCI - OPO
1 stop10h 30mUnited Airlines
Sun 11/3012:30 pmOPO - MCI
2 stops56h 29mUnited Airlines
Deal found 9/10$782
This United Airlines deal was found by Cheapflights users on 9/10. 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 11/255:30 pmMCI - OPO
2 stops34h 00mUnited Airlines
Sun 11/3012:30 pmOPO - MCI
2 stops57h 36mUnited Airlines
Deal found 9/10$892

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kansas City 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 September 11, 2025.
Use the filters below to find and compare flights from Kansas City to Porto that are best for you.

Fly from

Kansas City

Fly to

Porto

Route

Depart

Return

Price

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Mon 11/17

5:00 pm-9:30 am

1 stop10h 30m

Porto

Tue 12/2

6:00 am-2:21 pm

2 stops38h 21m

$532

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Tue 11/18

5:00 pm-9:30 am

1 stop10h 30m

Porto

Tue 12/2

6:00 am-2:21 pm

2 stops38h 21m

$532

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Tue 11/18

10:35 am-9:30 am

2 stops16h 55m

Porto

Wed 12/3

6:00 am-9:58 pm

2 stops21h 58m

$532

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Sun 11/16

5:00 pm-9:30 am

1 stop10h 30m

Porto

Wed 12/3

6:00 am-9:58 pm

2 stops21h 58m

$532

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Mon 11/17

11:36 am-9:30 am

2 stops15h 54m

Porto

Wed 12/3

6:00 am-9:58 pm

2 stops21h 58m

$532

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Wed 11/19

6:00 am-9:30 am

2 stops21h 30m

Porto

Wed 12/3

6:00 am-9:58 pm

2 stops21h 58m

$544

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Wed 11/19

11:36 am-11:40 am

2 stops18h 04m

Porto

Tue 12/2

6:00 am-9:58 pm

2 stops21h 58m

$558

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Wed 11/19

10:23 am-10:30 am

2 stops18h 07m

Porto

Fri 12/5

6:30 am-11:09 pm

2 stops22h 39m

$583

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Tue 11/18

12:18 pm-10:30 am

2 stops16h 12m

Porto

Thu 12/4

11:15 am-11:56 pm

2 stops18h 41m

$583

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Wed 11/19

2:13 pm-10:30 am

2 stops14h 17m

Porto

Thu 12/4

6:35 am-11:56 pm

2 stops23h 21m

$583

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 11 results
1
2

Best time to book a flight from Kansas City to Porto

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

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

Currently, January is the cheapest month in which you can book a flight from Kansas City to Porto (average of $523). Flying from Kansas City to Porto in June is currently the most expensive (average of $1,027). 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 MCI to OPO?

Find hourly flight availability from Kansas City 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 September 11, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 14% on flights from Kansas City to Porto by exploring options for tickets at noon.

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 September 11, 2025.
Read reviews from past customers who have flown United Airlines from Kansas City to Porto. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

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

  • How long is the flight from Kansas City to Porto?

    Departing from Kansas City to Porto will take you 10h 30m. There are 4333 mi between Kansas City and Porto.

  • What is the cheapest airline to fly from Kansas City to Porto round-trip?

    Cheapflights users have booked flights from Kansas City to Porto round-trip from $564. You may be able to fly from Kansas City to Porto for 36% less than the average price by searching for this airline.

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

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

  • How can I find direct flights from Kansas City to Porto?

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

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

    Yes. Cheapflights offers flight deals from Kansas City 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 Kansas City to Porto?

    Currently, January is the cheapest month in which you can book a flight from Kansas City to Porto (average of $523). Flying from Kansas City to Porto in June is currently the most expensive (average of $1,027). 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 Porto?

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

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Alternative routes for Kansas City to Porto

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Kansas City to Porto

Discover the top airline that operate flights from Kansas City 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$564Average$1,036FlexibilityNo cancel feeOn-time69%

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