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$469+ 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — OPO
Aug 27 — Sep 31
Thu 8/27
Thu 9/3
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 July 28, 2026.

This United Airlines deal was found by Cheapflights users on 7/26. 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 11/96:10 am
MCI
-
OPO
1 stop21h 20m
United Airlines
Thu 11/126:00 am
OPO
-
MCI
2 stops20h 39m
United Airlines
Deal found 7/26$722
This KLM deal was found by Cheapflights users on 7/27. 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.
Wed 12/211:51 am
MCI
-
OPO
1 stop15h 14m
KLM
Wed 12/95:00 am
OPO
-
MCI
2 stops18h 07m
KLM
Deal found 7/27$723
This Finnair deal was found by Cheapflights users on 7/26. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:44 pm
MCI
-
OPO
2 stops16h 01m
Multiple Airlines
Mon 12/712:25 pm
OPO
-
MCI
2 stops31h 24m
Multiple Airlines
Deal found 7/26$734
This United Airlines deal was found by Cheapflights users on 7/26. 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 12/23:34 pm
MCI
-
OPO
1 stop11h 56m
United Airlines
Mon 12/712:35 pm
OPO
-
MCI
2 stops33h 44m
United Airlines
Deal found 7/26$742
This Finnair deal was found by Cheapflights users on 7/27. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:44 pm
MCI
-
OPO
2 stops16h 01m
Multiple Airlines
Wed 12/98:40 pm
OPO
-
MCI
2 stops33h 45m
Multiple Airlines
Deal found 7/27$766
This United Airlines deal was found by Cheapflights users on 7/27. 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 12/13:34 pm
MCI
-
OPO
1 stop11h 56m
United Airlines
Tue 12/812:35 pm
OPO
-
MCI
1 stop13h 55m
United Airlines
Deal found 7/27$769
This Ovago deal was found by Cheapflights users on 7/27. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/23:34 pm
MCI
-
OPO
1 stop11h 56m
Lufthansa
Wed 12/96:00 am
OPO
-
MCI
2 stops20h 52m
Lufthansa
Deal found 7/27$772
This Air France deal was found by Cheapflights users on 7/26. 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.
Wed 12/211:51 am
MCI
-
OPO
1 stop15h 14m
Air France
Mon 12/711:00 am
OPO
-
MCI
1 stop13h 57m
Air France
Deal found 7/26$781

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 July 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$722
(United Airlines)

One-way from

$469
(United Airlines)

Popular in

August

Cheapest in

February

Average price

$1,519
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
One-way flight from Kansas City to Porto
Search Deals
Highest demand for flights based on searches. 32% potential increase in price ($531 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 12% potential price decrease ($119 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 28, 2026.
Use the filters below to find and compare flights from Kansas City to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Tue 9/1

1:43 pm-7:00 am

2 stops35h 17m

Porto

Thu 9/17

11:50 am-11:59 pm

2 stops42h 09m

$928

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Wed 8/26

7:30 am-7:00 am

2 stops17h 30m

Porto

Tue 9/1

6:00 am-7:32 pm

2 stops19h 32m

$934

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Tue 9/1

5:00 pm-3:25 pm

2 stops16h 25m

Porto

Fri 9/18

5:00 am-7:03 pm

2 stops20h 03m

$935

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Sun 8/23

4:04 pm-3:30 pm

2 stops17h 26m

Porto

Wed 9/2

5:00 am-7:01 pm

2 stops20h 01m

$935

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Tue 9/22

3:14 pm-7:00 am

2 stops33h 46m

Porto

Wed 9/30

6:00 am-11:44 pm

2 stops23h 44m

$940

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Mon 9/21

6:20 am-11:15 am

2 stops22h 55m

Porto

Mon 9/28

6:00 am-11:44 pm

2 stops23h 44m

$960

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Sun 9/6

6:20 am-9:45 am

2 stops21h 25m

Porto

Sun 9/13

12:15 pm-8:34 pm

2 stops38h 19m

$983

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Tue 9/1

3:14 pm-12:05 pm

2 stops14h 51m

Porto

Thu 9/17

9:00 am-11:59 pm

1 stop20h 59m

$997
Quickest round-trip

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Tue 9/1

3:14 pm-12:05 pm

2 stops14h 51m

Porto

Fri 9/18

12:35 pm-11:59 pm

1 stop17h 24m

$997

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Sat 8/15

5:39 pm-6:55 am

2 stops31h 16m

Porto

Sun 8/23

6:00 am-7:42 pm

2 stops19h 42m

$1,045

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 13 resultsSorted by cheapest first
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 July.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 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, February is the cheapest month in which you can book a flight from Kansas City to Porto (average of $491). Flying from Kansas City to Porto in August is currently the most expensive (average of $2,399). 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.

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 July 28, 2026.
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
10,048 reviews

Food

6.6

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
United Airlines
7.4
Good
10,048 reviews
United Airlines
7.4
Good
10,048 reviews

Food

6.6

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this

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 16h 25m. There are 4333 mi between Kansas City and Porto. This flight may include one or multiple stops.

  • 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 $788. You may be able to fly from Kansas City to Porto for 28% 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, February is the cheapest month in which you can book a flight from Kansas City to Porto (average of $491). Flying from Kansas City to Porto in August is currently the most expensive (average of $2,399). 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
Arcos de Valdevez
Coimbra
Aveiro

Browse thousands of different options on Cheapflights for your next trip

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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 July 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$788Average$1,088FlexibilityNo cancel feeOn-time69%

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