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$737+ 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 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
HNL — OPO
Apr 19 — Apr 261
Sun 4/19
Sun 4/26
1 adult, Economy
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Cheap 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 March 20, 2026.

This United Airlines deal was found by Cheapflights users on 3/15. 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.
Wed 12/28:25 pm
HNL
-
OPO
2 stops32h 50m
United Airlines
Sun 12/66:00 am
OPO
-
HNL
2 stops26h 18m
United Airlines
Deal found 3/15$737
This Air Canada deal was found by Cheapflights users on 3/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/211:00 pm
HNL
-
OPO
2 stops30h 15m
Air Canada
Sun 12/66:15 am
OPO
-
HNL
2 stops25h 18m
Air Canada
Deal found 3/18$773
This Mytrip deal was found by Cheapflights users on 3/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/179:55 pm
HNL
-
OPO
2 stops46h 05m
Air Canada
Thu 9/1011:50 am
OPO
-
HNL
2 stops43h 50m
Air Canada
Deal found 3/16$781
This Orbitz deal was found by Cheapflights users on 3/19. 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.
Fri 4/177:00 am
HNL
-
OPO
2 stops29h 25m
Multiple Airlines
Sat 5/98:40 am
OPO
-
HNL
2 stops24h 24m
Multiple Airlines
Deal found 3/19$837
This United Airlines deal was found by Cheapflights users on 3/18. 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.
Wed 4/157:40 pm
HNL
-
OPO
2 stops33h 05m
United Airlines
Sun 5/106:00 am
OPO
-
HNL
2 stops27h 04m
United Airlines
Deal found 3/18$996
This FlightHub deal was found by Cheapflights users on 3/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/229:55 pm
HNL
-
OPO
2 stops46h 15m
Air Canada
Tue 7/2812:15 pm
OPO
-
HNL
2 stops43h 25m
Air Canada
Deal found 3/15$1,032
This KLM deal was found by Cheapflights users on 3/16. 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.
Mon 8/173:35 pm
HNL
-
OPO
1 stop31h 55m
KLM
Thu 9/107:10 pm
OPO
-
HNL
2 stops36h 37m
KLM
Deal found 3/16$1,057
This FlightHub deal was found by Cheapflights users on 3/18. 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.
Wed 7/229:55 pm
HNL
-
OPO
2 stops46h 15m
Multiple Airlines
Tue 7/2812:15 pm
OPO
-
HNL
2 stops43h 25m
Multiple Airlines
Deal found 3/18$1,107
This Delta deal was found by Cheapflights users on 3/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:00 am
HNL
-
OPO
2 stops28h 00m
Delta
Sat 5/235:55 am
OPO
-
HNL
2 stops26h 06m
Delta
Deal found 3/19$1,113

Find 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 March 20, 2026.

Most accurate provider

AranGrant
2 stars

Most trusted provider

AranGrant
2 stars

Round-trip from

$781
(Mytrip)
Provider with most accurate pricing for Honolulu-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Honolulu-Porto flights.
Search Deals
From Honolulu to Porto
Search Deals

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 March 20, 2026.
Use the filters below to find and compare flights from Honolulu to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Fri 4/17

7:00 am-11:25 pm

2 stops29h 25m

Porto

Sat 5/9

8:40 am-10:04 pm

2 stops24h 24m

$837

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Wed 4/15

7:40 pm-3:45 pm

2 stops33h 05m

Porto

Sun 5/10

6:00 am-10:04 pm

2 stops27h 04m

$996

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Wed 7/22

9:40 pm-7:10 am

2 stops46h 30m

Porto

Tue 7/28

12:15 pm-1:57 pm

3 stops36h 42m

$1,122

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Thu 6/11

9:40 pm-9:45 am

2 stops25h 05m

Porto

Thu 6/18

6:00 am-7:25 pm

2 stops24h 25m

$1,243
Quickest round-trip

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Sun 8/2

9:40 pm-6:55 am

2 stops22h 15m

Porto

Mon 8/10

6:00 am-9:43 pm

2 stops26h 43m

$1,244

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Mon 8/3

9:40 pm-6:55 am

2 stops22h 15m

Porto

Mon 8/10

6:00 am-9:43 pm

2 stops26h 43m

$1,293

HonoluluPorto

HNL - OPO

HNLOPO

Honolulu

Mon 8/3

3:35 pm-10:30 am

1 stop31h 55m

Porto

Mon 8/10

4:20 pm-7:21 pm

2 stops38h 01m

$1,379

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/19

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Honolulu-Porto flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Honolulu-Porto flight deals on Cheapflights vs. AranGrant 90-95% of the time. Price accuracy is based on data collected from Honolulu-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Honolulu-Porto flights, Cheapflights users trust AranGrant the most. AranGrant 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 Honolulu-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 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 March 20, 2026.
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
9,450 reviews

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,450 reviews
United Airlines
7.4
Good
9,450 reviews

Crew

8.1

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 fly from Honolulu to Porto in about 33h 05m. The time it takes to get you to your destination can typically vary by up to . Honolulu and Porto are separated by a distance of 7680 mi.

  • 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 $588 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.

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Honolulu to Porto

See prices for flight routes from nearby airports that may be better suited for you.
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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 March 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$588Average$1,145FlexibilityNo cancel feeOn-time69%

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