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$399+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — OPO
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
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 March 10, 2026.

This United Airlines deal was found by Cheapflights users on 3/8. 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 12/23:22 pm
MCI
-
OPO
2 stops17h 53m
United Airlines
Sun 12/66:00 am
OPO
-
MCI
2 stops18h 42m
United Airlines
Deal found 3/8$637
This American Airlines deal was found by Cheapflights users on 3/7. 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.
Wed 4/2210:48 am
MCI
-
OPO
2 stops18h 57m
American Airlines
Wed 4/298:20 am
OPO
-
MCI
2 stops17h 00m
American Airlines
Deal found 3/7$640
This United Airlines deal was found by Cheapflights users on 3/9. 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.
Tue 10/136:00 am
MCI
-
OPO
2 stops19h 00m
United Airlines
Thu 10/2211:50 am
OPO
-
MCI
2 stops41h 47m
United Airlines
Deal found 3/9$666
This United Airlines deal was found by Cheapflights users on 3/9. 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.
Mon 10/127:55 pm
MCI
-
OPO
2 stops29h 05m
United Airlines
Wed 10/212:25 pm
OPO
-
MCI
2 stops60h 27m
United Airlines
Deal found 3/9$695
This KAYAK deal was found by Cheapflights users on 3/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:00 am
MCI
-
OPO
1 stop21h 45m
Lufthansa
Thu 10/2212:35 pm
OPO
-
MCI
1 stop17h 17m
Lufthansa
Deal found 3/9$732
This United Airlines deal was found by Cheapflights users on 3/6. 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 9/257:55 pm
MCI
-
OPO
2 stops29h 05m
United Airlines
Fri 10/26:00 am
OPO
-
MCI
2 stops34h 33m
United Airlines
Deal found 3/6$749
This Delta deal was found by Cheapflights users on 3/9. 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.
Tue 3/249:35 am
MCI
-
OPO
2 stops19h 55m
Delta
Mon 3/305:00 am
OPO
-
MCI
2 stops21h 50m
Delta
Deal found 3/9$774
This Delta deal was found by Cheapflights users on 3/5. 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 3/302:16 pm
MCI
-
OPO
2 stops19h 09m
Delta
Thu 4/235:00 am
OPO
-
MCI
2 stops20h 19m
Delta
Deal found 3/5$777
This Air France deal was found by Cheapflights users on 3/6. 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.
Tue 3/241:25 pm
MCI
-
OPO
2 stops16h 05m
Air France
Mon 3/306:30 am
OPO
-
MCI
2 stops18h 49m
Air France
Deal found 3/6$780
This United Airlines deal was found by Cheapflights users on 3/6. 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 8/156:20 pm
MCI
-
OPO
2 stops30h 35m
United Airlines
Sun 8/2312:15 pm
OPO
-
MCI
2 stops32h 02m
United Airlines
Deal found 3/6$797

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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$640
(American Airlines)

One-way from

$399
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$610
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. 5% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($70 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 10, 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 3/24

9:35 am-10:30 am

2 stops19h 55m

Porto

Mon 3/30

5:00 am-8:50 pm

2 stops21h 50m

$774

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Mon 3/30

2:16 pm-3:25 pm

2 stops19h 09m

Porto

Thu 4/23

5:00 am-7:19 pm

2 stops20h 19m

$777
Quickest round-trip

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Tue 3/24

1:25 pm-10:30 am

2 stops16h 05m

Porto

Mon 3/30

6:30 am-7:19 pm

2 stops18h 49m

$780

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Mon 3/30

12:35 pm-4:00 pm

2 stops21h 25m

Porto

Thu 4/23

8:20 am-7:20 pm

2 stops17h 00m

$784

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Sat 8/15

5:45 pm-9:45 am

2 stops34h 00m

Porto

Sun 8/23

12:15 pm-2:17 pm

2 stops32h 02m

$797

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Thu 7/30

12:30 pm-7:10 am

3 stops36h 40m

Porto

Wed 8/5

2:25 pm-4:00 pm

2 stops31h 35m

$896
Cheapest one-way
Quickest one-way

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Wed 4/8

5:45 am-10:55 pm

2 stops35h 10m

$400

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

Sorted by cheapest first

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 March.
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.

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 March 10, 2026.
Read reviews from past customers who have flown 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.
United Airlines
7.4
Good
9,409 reviews

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,409 reviews
United Airlines
7.4
Good
9,409 reviews

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.1
Good
11,413 reviews
United Airlines
7.4
Good
9,409 reviews

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 05m. 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 $546. Another airline that can offer you cheap pricing is United Airlines. You may be able to fly from Kansas City to Porto for 39% 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 2 airlines flying from Kansas City to Porto

Discover the top 2 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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$546Average$903FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$564Average$859FlexibilityNo cancel feeOn-time69%

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