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$1,661+ Cheap flights from Kailua-Kona (KOA) 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 6/13. Fares are subject to change and may not be available on all flights or dates of travel.
KOA — OPO
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheap flight deals from Kailua-Kona to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Kailua-Kona (KOA) 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 April 29, 2025.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$1,661
(United Airlines)
Provider with most accurate pricing for Kona Intl-Porto flight deals.
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Provider most trusted by Cheapflights users for Kona Intl-Porto flights.
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From Kona Intl to Porto
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Find flight deals from Kailua-Kona to Porto

Cheapest flights from Kailua-Kona to Porto
Explore the most affordable flight options available from Kailua-Kona to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This United Airlines deal was found by Cheapflights users on 4/29. 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 6/1310:15 pmKOA - OPO
2 stops24h 20mUnited Airlines
Fri 6/2012:05 pmOPO - KOA
2 stops62h 14mUnited Airlines
Deal found 4/29$1,661

Cheapflights Fare Finder

Customize your flight search to find flights from Kailua-Kona 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 29, 2025.
Use the filters below to find and compare flights from Kailua-Kona to Porto that are best for you.

Fly from

Kailua-Kona

Fly to

Porto

Route

Depart

Return

Price

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Fri 6/13

10:15 pm-9:35 am

2 stops24h 20m

Porto

Fri 6/20

12:05 pm-3:19 pm

2 stops62h 14m

$1,661

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

  • Most accurate provider: When it comes to deals on Kailua-Kona-Porto flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Kailua-Kona-Porto flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Kailua-Kona-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Kailua-Kona-Porto flights, Cheapflights users trust Expedia the most. Expedia 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 Kailua-Kona-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 Kailua-Kona to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Kailua-Kona 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 Kailua-Kona to Porto

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 29, 2025.
United Airlines
7.4
Good
8,696 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

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
8,696 reviews
United Airlines
7.4
Good
8,696 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

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 Kailua-Kona to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Kailua-Kona to Porto that include hotel bookings?

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

  • How can I find direct flights from Kailua-Kona to Porto?

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

  • Can I find deals for business class flights from Kailua-Kona to Porto?

    Yes. Cheapflights offers flight deals from Kailua-Kona 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 Kailua-Kona to Porto?

    Currently, January is the cheapest month in which you can book a flight from Kailua-Kona to Porto (average of $523). Flying from Kailua-Kona to Porto in June is currently the most expensive (average of $1,071). 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 Kailua-Kona?

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

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