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$475+ Cheap flights from Kansas City (MCI) to Porto (OPO)

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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — OPO
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheap 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 February 3, 2026.

This United Airlines deal was found by Cheapflights users on 1/31. 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.
Sun 3/15:30 pm
MCI
-
OPO
2 stops34h 00m
United Airlines
Tue 3/176:00 am
OPO
-
MCI
2 stops20h 59m
United Airlines
Deal found 1/31$475
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Mon 3/98:00 am
MCI
-
OPO
2 stops20h 30m
United Airlines
Tue 3/176:00 am
OPO
-
MCI
2 stops22h 15m
United Airlines
Deal found 2/1$493
This Delta deal was found by Cheapflights users on 2/1. 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.
Mon 3/912:17 pm
MCI
-
OPO
2 stops17h 13m
Delta
Wed 3/185:00 am
OPO
-
MCI
2 stops16h 55m
Delta
Deal found 2/1$495
This United Airlines deal was found by Cheapflights users on 2/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/76:34 pm
MCI
-
OPO
2 stops32h 56m
United Airlines
Mon 3/166:00 am
OPO
-
MCI
2 stops35h 19m
United Airlines
Deal found 2/2$498
This United Airlines deal was found by Cheapflights users on 2/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/88:00 am
MCI
-
OPO
2 stops20h 30m
United Airlines
Wed 3/1812:35 pm
OPO
-
MCI
2 stops25h 55m
United Airlines
Deal found 2/2$501
This Delta deal was found by Cheapflights users on 2/1. 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 3/116:00 am
MCI
-
OPO
2 stops23h 30m
Delta
Mon 3/165:00 am
OPO
-
MCI
2 stops23h 06m
Delta
Deal found 2/1$502
This United Airlines deal was found by Cheapflights users on 2/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/75:40 pm
MCI
-
OPO
2 stops33h 50m
United Airlines
Wed 3/1812:35 pm
OPO
-
MCI
2 stops25h 55m
United Airlines
Deal found 2/2$506
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Wed 3/118:00 am
MCI
-
OPO
2 stops26h 25m
United Airlines
Mon 3/1612:30 pm
OPO
-
MCI
2 stops28h 49m
United Airlines
Deal found 2/1$509
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Wed 3/118:00 am
MCI
-
OPO
2 stops26h 25m
United Airlines
Wed 3/1812:35 pm
OPO
-
MCI
2 stops25h 55m
United Airlines
Deal found 2/1$522
This United Airlines deal was found by Cheapflights users on 2/3. 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 3/101:15 pm
MCI
-
OPO
2 stops15h 15m
United Airlines
Tue 3/176:00 am
OPO
-
MCI
2 stops20h 59m
United Airlines
Deal found 2/3$573
This United Airlines deal was found by Cheapflights users on 2/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3011:30 am
MCI
-
OPO
2 stops22h 10m
United Airlines
Thu 4/236:00 am
OPO
-
MCI
2 stops34h 27m
United Airlines
Deal found 2/2$594

Find 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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$475
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$642
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 Kansas City to Porto
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($68 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 3, 2026.
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

Sun 3/1

5:30 pm-9:30 am

2 stops34h 00m

Porto

Tue 3/17

6:00 am-9:59 pm

2 stops20h 59m

$475

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Sun 3/8

8:00 am-9:30 am

2 stops20h 30m

Porto

Tue 3/17

6:00 am-11:15 pm

2 stops22h 15m

$493

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Mon 3/9

8:00 am-9:30 am

2 stops20h 30m

Porto

Tue 3/17

6:00 am-11:15 pm

2 stops22h 15m

$493

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Mon 3/9

1:15 pm-9:30 am

2 stops15h 15m

Porto

Mon 3/16

12:30 pm-2:20 pm

2 stops30h 50m

$493

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Tue 3/10

1:15 pm-9:30 am

2 stops15h 15m

Porto

Tue 3/17

6:00 am-11:15 pm

2 stops22h 15m

$493

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Tue 3/10

1:15 pm-9:30 am

2 stops15h 15m

Porto

Mon 3/16

6:00 am-12:19 pm

2 stops35h 19m

$493

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Sun 3/8

8:00 am-9:30 am

2 stops20h 30m

Porto

Mon 3/16

12:30 pm-12:19 pm

2 stops28h 49m

$493

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Mon 3/9

8:00 am-9:30 am

2 stops20h 30m

Porto

Wed 3/18

6:00 am-9:30 am

2 stops32h 30m

$493

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Sat 3/7

6:34 pm-9:30 am

2 stops32h 56m

Porto

Mon 3/16

12:30 pm-12:19 pm

2 stops28h 49m

$498

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Sat 5/23

12:12 pm-11:40 am

3 stops41h 28m

$483

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 14 results
1
2

Compare providers for flights from Kansas City to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Kansas City to Porto in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Kansas City-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Kansas City-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Kansas City-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Kansas City-Porto flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Kansas City-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 $492). Flying from Kansas City to Porto in June is currently the most expensive (average of $986). 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.

How much does it cost to fly round-trip from Kansas City to Porto?

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 February 3, 2026.
Read reviews from past customers who have flown Delta, United Airlines, and American 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.
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Comfort

7.9

Overall

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,138 reviews
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Comfort

7.9

Overall

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,236 reviews
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Comfort

7.9

Overall

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,217 reviews
Delta
7.9
Good
8,138 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Comfort

7.9

Overall

7.9

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 17h 13m. There are 4333 mi between Kansas City and Porto. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Kansas City to Porto round-trip?

    Cheapflights users have booked flights from Kansas City to Porto round-trip from $492. Other airlines that can offer you cheap pricing are United Airlines, from $564, and American Airlines, from $821. You may be able to fly from Kansas City to Porto for 46% less than the average price by searching for these airlines.

  • 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 $492). Flying from Kansas City to Porto in June is currently the most expensive (average of $986). 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
Vila Nova de Gaia
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 3 airlines flying from Kansas City to Porto

Discover the top 3 airlines 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$492Average$776FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$564Average$788FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$821Average$1,026FlexibilityNo cancel feeOn-time71%

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