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$623+ 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 3/14. Fares are subject to change and may not be available on all flights or dates of travel.
KOA — OPO
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
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 January 27, 2026.

This United Airlines deal was found by Cheapflights users on 1/25. 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 3/1410:55 pm
KOA
-
OPO
2 stops30h 20m
United Airlines
Tue 3/316:00 am
OPO
-
KOA
2 stops24h 42m
United Airlines
Deal found 1/25$623
This United Airlines deal was found by Cheapflights users on 1/25. 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 3/1310:55 pm
KOA
-
OPO
2 stops30h 10m
United Airlines
Tue 3/316:00 am
OPO
-
KOA
2 stops24h 42m
United Airlines
Deal found 1/25$673
This United Airlines deal was found by Cheapflights users on 1/24. 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 3/510:55 pm
KOA
-
OPO
2 stops29h 50m
United Airlines
Mon 3/912:35 pm
OPO
-
KOA
2 stops32h 58m
United Airlines
Deal found 1/24$691
This FlightHub deal was found by Cheapflights users on 1/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1510:55 pm
KOA
-
OPO
2 stops30h 00m
Lufthansa
Mon 3/304:35 pm
OPO
-
KOA
2 stops38h 07m
Lufthansa
Deal found 1/25$731
This United Airlines deal was found by Cheapflights users on 1/25. 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 3/1410:55 pm
KOA
-
OPO
2 stops30h 20m
United Airlines
Mon 3/3012:00 pm
OPO
-
KOA
2 stops42h 42m
United Airlines
Deal found 1/25$744
This KAYAK deal was found by Cheapflights users on 1/25. 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.
Fri 3/1310:55 pm
KOA
-
OPO
2 stops38h 45m
Lufthansa
Mon 3/304:35 pm
OPO
-
KOA
2 stops38h 07m
Lufthansa
Deal found 1/25$798
This FlightHub deal was found by Cheapflights users on 1/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1510:55 pm
KOA
-
OPO
2 stops30h 00m
Lufthansa
Sun 3/296:00 am
OPO
-
KOA
2 stops24h 42m
Lufthansa
Deal found 1/25$1,214
This United Airlines deal was found by Cheapflights users on 1/25. 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 3/1410:55 pm
KOA
-
OPO
2 stops30h 20m
United Airlines
Sun 3/2912:00 pm
OPO
-
KOA
2 stops33h 47m
United Airlines
Deal found 1/25$1,274
This United Airlines deal was found by Cheapflights users on 1/25. 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 3/1310:55 pm
KOA
-
OPO
2 stops30h 10m
United Airlines
Sun 3/2912:00 pm
OPO
-
KOA
2 stops33h 47m
United Airlines
Deal found 1/25$1,324
This American Airlines deal was found by Cheapflights users on 1/25. 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.
Sat 3/149:17 pm
KOA
-
OPO
2 stops32h 43m
American Airlines
Mon 3/3012:25 pm
OPO
-
KOA
3 stops37h 49m
American Airlines
Deal found 1/25$1,558

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 January 27, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$623
(United Airlines)
Provider with most accurate pricing for Kona Intl-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Kona Intl-Porto flights.
Search Deals
From Kona Intl to Porto
Search Deals

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 January 27, 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

Sun 3/15

10:55 pm-2:55 pm

2 stops30h 00m

Porto

Tue 3/31

6:00 am-7:42 pm

2 stops24h 42m

$623

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Sat 3/14

10:55 pm-3:15 pm

2 stops30h 20m

Porto

Tue 3/31

6:00 am-7:42 pm

2 stops24h 42m

$623

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Fri 3/13

10:55 pm-3:05 pm

2 stops30h 10m

Porto

Tue 3/31

6:00 am-7:42 pm

2 stops24h 42m

$673

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Thu 3/5

10:55 pm-2:45 pm

2 stops29h 50m

Porto

Mon 3/9

12:35 pm-11:33 am

2 stops32h 58m

$691

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Sun 3/15

10:55 pm-2:55 pm

2 stops30h 00m

Porto

Mon 3/30

4:35 pm-7:42 pm

2 stops38h 07m

$731

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Sat 3/14

10:55 pm-3:15 pm

2 stops30h 20m

Porto

Mon 3/30

12:00 pm-7:42 pm

2 stops42h 42m

$744

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Fri 3/13

10:55 pm-11:40 pm

2 stops38h 45m

Porto

Mon 3/30

4:35 pm-7:42 pm

2 stops38h 07m

$798

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Sun 3/15

10:55 pm-2:55 pm

2 stops30h 00m

Porto

Sun 3/29

6:00 am-7:42 pm

2 stops24h 42m

$1,214

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Sat 3/14

10:55 pm-3:15 pm

2 stops30h 20m

Porto

Sun 3/29

12:00 pm-10:47 am

2 stops33h 47m

$1,274

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Fri 3/13

10:55 pm-3:05 pm

2 stops30h 10m

Porto

Sun 3/29

12:00 pm-10:47 am

2 stops33h 47m

$1,324

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

  • 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 30h. 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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