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Cheap flights from Kailua-Kona to Porto from $1,160

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Kailua-Kona to Porto departing on 5/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Kailua-Kona to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:55 pm - 3:25 pm
KOA
-
OPO
30h 30m
2 stops
Multiple Airlines Logo
7:10 pm - 7:17 pm
OPO
-
KOA
35h 07m
2 stops
$1,160Multiple Airlines
Mon, May 25 - Wed, Jun 10
United Airlines Logo
8:00 pm - 9:45 am
KOA
-
OPO
26h 45m
2 stops
United Airlines Logo
12:35 pm - 12:37 pm
OPO
-
KOA
35h 02m
3 stops
$1,795United Airlines
Mon, May 25 - Wed, Jun 10
Lufthansa Logo
10:50 pm - 3:45 pm
KOA
-
OPO
29h 55m
2 stops
Lufthansa Logo
6:20 am - 7:31 pm
OPO
-
KOA
24h 11m
2 stops
$6,790Lufthansa
Mon, May 25 - Wed, Jun 10
United Airlines Logo
1:52 pm - 6:15 am
KOA
-
OPO
29h 23m
2 stops
United Airlines Logo
12:35 pm - 12:37 pm
OPO
-
KOA
35h 02m
3 stops
$7,639United Airlines
Mon, May 25 - Wed, Jun 10

United Airlines flights from Kailua-Kona to Porto

Our best United Airlines deals on Kailua-Kona to Porto flight tickets
United Airlines
May 25
KOA8:00 pmKona Intl
26h 45m
2 stops
OPO9:45 amPorto
Jun 10
OPO12:35 pmPorto
35h 02m
3 stops
KOA12:37 pmKona Intl
$1,795
United Airlines
May 25
KOA1:52 pmKona Intl
29h 23m
2 stops
OPO6:15 amPorto
Jun 10
OPO12:35 pmPorto
35h 02m
3 stops
KOA12:37 pmKona Intl
$7,639

momondo 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, momondo users made 832,500 searches. Data last updated April 15, 2026.
Use the filters below to find and compare flights from Kailua-Kona to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Mon 5/25

9:55 pm-3:25 pm

2 stops30h 30m

Porto

Wed 6/10

7:10 pm-7:17 pm

2 stops35h 07m

$1,160

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Mon 5/25

8:00 pm-9:45 am

2 stops26h 45m

Porto

Wed 6/10

12:35 pm-12:37 pm

3 stops35h 02m

$1,795
Quickest round-trip

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Mon 5/25

10:50 pm-3:45 pm

2 stops29h 55m

Porto

Wed 6/10

6:20 am-7:31 pm

2 stops24h 11m

$6,790

Kailua-KonaPorto

KOA - OPO

KOAOPO

Kona Intl

Mon 5/25

1:52 pm-6:15 am

2 stops29h 23m

Porto

Wed 6/10

12:35 pm-12:37 pm

3 stops35h 02m

$7,639

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Kailua-Kona to Porto

Are you open to changing your travel dates? Check out the ideal times to fly from Kailua-Kona to Porto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Kailua-Kona to Porto (KOA to OPO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Kailua-Kona to Porto

Fastest flight time

30h 30m

Direct flights

None
The fastest flight from Kailua-Kona to Porto takes 30h 30m
There are no direct flights from Kailua-Kona to Porto. There are no popular flight routes from Kailua-Kona to Porto.
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Frequently asked questions about flying from Kailua-Kona to Porto

  • How far is Kona Intl to Porto by plane?

    Kona Intl and Porto are 7738.7 mi apart from one another. By plane, this route typically takes 30h 30m.

  • When did momondo last update prices for flights from Kona Intl Airport to Porto Airport?

    Prices for flights from Kona Intl Airport to Porto Airport are updated daily.

  • How old do you have to be to fly from Kona Intl Airport to Porto Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Kona Intl Airport to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The necessary travel and health documents for your Porto Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Kailua-Kona to Porto

  • How do I get Price Alerts for flights from Kailua-Kona to Porto?

    Price Alerts will notify you by email when the price for flights to Porto from Kailua-Kona decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Kailua-Kona to Porto with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Braga
Aveiro
Matosinhos
Lamego
Esposende
Chaves
Pinhao
Guimarães
Espinho
Arcos de Valdevez
Ponte de Lima
Viseu
Curia
Penafiel
Mesao Frio
Mira
Baiao

Why use momondo?

Why should I use momondo to find a flight deal from Kailua-Kona to Porto?

It is quick and easy to find Kailua-Kona to Porto flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Porto that suits you.

Can I find flights from Kailua-Kona to Porto with flexible booking policies on momondo?

All flight searches from Kailua-Kona to Porto on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Kailua-Kona to Porto?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Kailua-Kona to Porto.

I’m not ready to book a flight from Kailua-Kona to Porto right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Kailua-Kona to Porto flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Fri 5/15
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