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$458+ Cheap flights from Kailua-Kona (KOA) 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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
KOA — OPO
Mar 18 — Mar 251
Wed 3/18
Wed 3/25
1 adult, Economy
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Cheap 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 February 16, 2026.

This United Airlines deal was found by Cheapflights users on 2/15. 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.
Thu 2/268:55 pm
KOA
-
OPO
2 stops26h 35m
United Airlines
Mon 3/212:30 pm
OPO
-
KOA
2 stops58h 29m
United Airlines
Deal found 2/15$741
This United Airlines deal was found by Cheapflights users on 2/12. 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.
Thu 3/58:35 pm
KOA
-
OPO
2 stops26h 55m
United Airlines
Mon 3/96:00 am
OPO
-
KOA
2 stops43h 34m
United Airlines
Deal found 2/12$1,095

Find 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 February 16, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$741
(United Airlines)

One-way from

$458
(Kiwi.com)
Provider with most accurate pricing for Kona Intl-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Kona Intl-Porto flights.
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From Kona Intl to Porto
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One-way flight from Kona Intl to Porto
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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 February 16, 2026.
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

Thu 2/26

8:55 pm-9:30 am

2 stops26h 35m

Porto

Mon 3/2

12:30 pm-12:59 pm

2 stops58h 29m

$741

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Thu 3/5

8:35 pm-9:30 am

2 stops26h 55m

Porto

Mon 3/9

6:00 am-3:34 pm

2 stops43h 34m

$1,095

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Mon 3/16

2:33 pm-11:45 am

2 stops59h 12m

$458

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Sun 3/15

10:57 pm-2:20 pm

3 stops53h 23m

$464

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Tue 3/17

10:55 pm-3:25 pm

2 stops30h 30m

$486

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Sun 3/15

10:55 pm-2:55 pm

2 stops30h 00m

$486

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Tue 3/17

8:55 pm-3:25 pm

2 stops32h 30m

$494

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Wed 3/18

3:59 pm-7:40 am

2 stops53h 41m

$510

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Sat 3/14

1:30 pm-2:55 pm

2 stops63h 25m

$531

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Wed 3/18

10:55 pm-9:30 am

2 stops24h 35m

$539

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/13

Showing 1-10 of 12 results
1
2
  • 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.

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.

  • How long is the flight from Kailua-Kona to Porto?

    Departing from Kailua-Kona to Porto will take you 26h 35m. Airlines will cover a distance of 7727 mi.

  • 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.

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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