HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Porto

$714+ Cheap flights from Honolulu (HNL) 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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
HNL — OPO
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Honolulu to Porto with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Honolulu to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Honolulu (HNL) 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 September 15, 2025.

Round-trip from

$714
(United Airlines)
From Honolulu to Porto
Search Deals

Find flight deals from Honolulu to Porto

Cheapest flights from Honolulu to Porto
Explore the most affordable flight options available from Honolulu to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This United Airlines deal was found by Cheapflights users on 9/12. 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.
Tue 10/289:50 pmHNL - OPO
2 stops25h 40mUnited Airlines
Tue 11/412:30 pmOPO - HNL
2 stops42h 33mUnited Airlines
Deal found 9/12$714
This United Airlines deal was found by Cheapflights users on 9/12. 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.
Tue 10/289:50 pmHNL - OPO
2 stops25h 40mMultiple Airlines
Tue 11/46:00 amOPO - HNL
3 stops26h 27mMultiple Airlines
Deal found 9/12$882
This Arangrant deal was found by Cheapflights users on 9/14. 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 Arangrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/811:30 pmHNL - OPO
2 stops29h 15mLufthansa
Mon 1/121:45 pmOPO - HNL
2 stops41h 55mLufthansa
Deal found 9/14$3,281
This Arangrant deal was found by Cheapflights users on 9/14. 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 Arangrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/811:30 pmHNL - OPO
2 stops36h 55mLufthansa
Thu 1/82:05 pmOPO - HNL
2 stops41h 35mLufthansa
Deal found 9/14$3,383
This AranGrant deal was found by Cheapflights users on 9/13. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/311:30 pmHNL - OPO
2 stops36h 55mLufthansa
Mon 12/81:45 pmOPO - HNL
2 stops41h 55mLufthansa
Deal found 9/13$3,642
This Orbitz deal was found by Cheapflights users on 9/14. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1110:55 pmHNL - OPO
2 stops38h 45mMultiple Airlines
Tue 1/1312:30 pmOPO - HNL
2 stops43h 10mMultiple Airlines
Deal found 9/14$3,645
This Arangrant deal was found by Cheapflights users on 9/13. 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 Arangrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1711:30 pmHNL - OPO
2 stops29h 15mLufthansa
Tue 12/166:00 amOPO - HNL
2 stops26h 30mLufthansa
Deal found 9/13$3,651
This KLM deal was found by Cheapflights users on 9/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/185:00 pmHNL - OPO
2 stops31h 30mKLM
Wed 12/1711:25 amOPO - HNL
2 stops43h 03mKLM
Deal found 9/15$3,794
This FlightHub deal was found by Cheapflights users on 9/14. 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.
Tue 11/411:30 pmHNL - OPO
2 stops38h 10mLufthansa
Tue 12/24:15 pmOPO - HNL
2 stops64h 15mLufthansa
Deal found 9/14$3,823
This AranGrant deal was found by Cheapflights users on 9/14. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/610:55 pmHNL - OPO
2 stops38h 45mLufthansa
Mon 12/81:45 pmOPO - HNL
2 stops41h 55mLufthansa
Deal found 9/14$3,835
This Arangrant deal was found by Cheapflights users on 9/14. 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 Arangrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/87:50 pmHNL - OPO
2 stops38h 10mBritish Airways
Mon 1/58:40 pmOPO - HNL
2 stops51h 10mBritish Airways
Deal found 9/14$3,861

Cheapflights Fare Finder

 
Customize your flight search to find flights from Honolulu 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 September 15, 2025.
Use the filters below to find and compare flights from Honolulu to Porto that are best for you.

Fly from

Honolulu

Fly to

Porto

Route

Depart

Return

Price

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Tue 10/28

9:50 pm-9:30 am

2 stops25h 40m

Porto

Tue 11/4

12:30 pm-9:03 pm

2 stops42h 33m

$714

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Thu 3/5

10:55 pm-11:40 am

2 stops26h 45m

Porto

Mon 3/9

12:30 pm-9:28 pm

2 stops42h 58m

$824

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Tue 10/28

9:50 pm-9:30 am

2 stops25h 40m

Porto

Tue 11/4

6:00 am-10:27 pm

3 stops26h 27m

$882

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Mon 12/8

11:30 pm-10:25 pm

2 stops36h 55m

Porto

Thu 1/8

2:05 pm-9:40 pm

2 stops41h 35m

$3,383

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Mon 11/3

11:30 pm-10:25 pm

2 stops36h 55m

Porto

Mon 12/8

1:45 pm-9:40 pm

2 stops41h 55m

$3,642

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Thu 12/11

10:55 pm-11:40 pm

2 stops38h 45m

Porto

Tue 1/13

12:30 pm-9:40 pm

2 stops43h 10m

$3,645

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Mon 11/17

11:30 pm-2:45 pm

2 stops29h 15m

Porto

Tue 12/16

6:00 am-10:30 pm

2 stops26h 30m

$3,651

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Best time to book a flight from Honolulu to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Honolulu 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.

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 September 15, 2025.
Read reviews from past customers who have flown United Airlines from Honolulu 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
8,929 reviews

Comfort

7.3

Food

6.6

Crew

8.1

Boarding

7.7

Entertainment

7.1

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
8,929 reviews
United Airlines
7.4
Good
8,929 reviews

Comfort

7.3

Food

6.6

Crew

8.1

Boarding

7.7

Entertainment

7.1

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 Honolulu 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 Honolulu to Porto?

    Airlines like United Airlines and Lufthansa fly from Honolulu to Porto in about 25h 40m. The time it takes to get you to your destination can typically vary by up to 1h 05m. Honolulu and Porto are separated by a distance of 7680 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Honolulu to Porto round-trip?

    Our cheapest airline available from Honolulu to Porto is United Airlines. Our recent data shows that you can find tickets from as low as $662 on this airline.

  • Can I find deals for flights from Honolulu to Porto that include hotel bookings?

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

  • How can I find direct flights from Honolulu to Porto?

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

  • Can I find deals for business class flights from Honolulu to Porto?

    Yes. Cheapflights offers flight deals from Honolulu 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 Honolulu to Porto?

    Currently, January is the cheapest month in which you can book a flight from Honolulu to Porto (average of $523). Flying from Honolulu to Porto in June is currently the most expensive (average of $1,027). 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
Aveiro
Arcos de Valdevez
Coimbra

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Honolulu to Porto

Discover the top airline that operate flights from Honolulu 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$662Average$1,311FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.