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$633+ Cheap flights from Sky Harbor Intl (PHX) 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 2/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — OPO
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Porto are usually found in November or March, booked 17 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Sky Harbor Intl to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Sky Harbor Intl (PHX) 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 August 14, 2025.

Round-trip from

$633
(Ovago)

Popular in

December

Cheapest in

November

Average price

$714
From Phoenix Sky Harbor Intl to Porto
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($117 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($63 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
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Find flight deals from Sky Harbor Intl to Porto

Cheapest flights from Sky Harbor Intl to Porto
Explore the most affordable flight options available from Sky Harbor Intl to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This American Airlines deal was found by Cheapflights users on 8/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/28:30 amPHX - OPO
2 stops19h 10mAmerican Airlines
Thu 10/168:15 amOPO - PHX
2 stops19h 34mAmerican Airlines
Deal found 8/13$671
This United Airlines deal was found by Cheapflights users on 8/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/12:12 pmPHX - OPO
2 stops36h 18mUnited Airlines
Sat 11/86:00 amOPO - PHX
2 stops40h 58mUnited Airlines
Deal found 8/13$675
This British Airways deal was found by Cheapflights users on 8/13. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/28:40 pmPHX - OPO
1 stop15h 40mBritish Airways
Thu 10/169:55 amOPO - PHX
1 stop16h 35mBritish Airways
Deal found 8/13$708
This Air Canada deal was found by Cheapflights users on 8/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/57:30 amPHX - OPO
2 stops26h 45mAir Canada
Mon 10/206:15 amOPO - PHX
2 stops36h 07mAir Canada
Deal found 8/13$724
This Ovago deal was found by Cheapflights users on 8/14. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/15:20 pmPHX - OPO
2 stops23h 20mLufthansa
Sat 11/812:35 pmOPO - PHX
1 stop17h 16mLufthansa
Deal found 8/14$729
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/58:40 pmPHX - OPO
1 stop28h 35mMultiple Airlines
Mon 10/208:50 pmOPO - PHX
2 stops52h 23mMultiple Airlines
Deal found 8/13$756
This Delta deal was found by Cheapflights users on 8/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/212:16 pmPHX - OPO
2 stops19h 14mDelta
Thu 10/166:30 amOPO - PHX
2 stops39h 31mDelta
Deal found 8/13$758
This Delta deal was found by Cheapflights users on 8/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/53:05 pmPHX - OPO
1 stop16h 25mDelta
Mon 10/206:30 amOPO - PHX
2 stops23h 56mDelta
Deal found 8/13$761
This American Airlines deal was found by Cheapflights users on 8/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/303:43 pmPHX - OPO
2 stops16h 12mAmerican Airlines
Thu 10/98:15 amOPO - PHX
2 stops19h 34mAmerican Airlines
Deal found 8/13$768
This Ovago deal was found by Cheapflights users on 8/13. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/306:40 pmPHX - OPO
1 stop16h 50mBritish Airways
Thu 10/99:55 amOPO - PHX
1 stop36h 20mBritish Airways
Deal found 8/13$800

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sky Harbor Intl 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 August 14, 2025.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Porto that are best for you.

Fly from

Sky Harbor Intl

Fly to

Porto

Route

Depart

Return

Price

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sun 2/1

8:25 pm-7:40 am

2 stops28h 15m

Porto

Tue 4/7

12:20 pm-11:30 pm

2 stops19h 10m

$633

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sun 2/1

9:05 pm-11:40 am

3 stops31h 35m

Porto

Tue 4/7

6:00 am-7:55 pm

2 stops21h 55m

$648

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sun 10/5

8:56 am-11:40 am

2 stops18h 44m

Porto

Mon 10/20

8:15 am-7:21 pm

2 stops19h 06m

$671

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Thu 10/2

8:30 am-11:40 am

2 stops19h 10m

Porto

Thu 10/16

8:15 am-7:49 pm

2 stops19h 34m

$671

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sat 11/1

2:12 pm-9:30 am

2 stops36h 18m

Porto

Sat 11/8

6:00 am-3:58 pm

2 stops40h 58m

$675

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sun 2/1

3:50 pm-10:15 am

1 stop35h 25m

Porto

Tue 4/7

11:25 am-11:16 pm

2 stops19h 51m

$708

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sun 10/5

8:40 pm-8:20 pm

1 stop15h 40m

Porto

Mon 10/20

9:10 pm-6:30 pm

1 stop29h 20m

$708

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sat 11/1

5:00 am-7:40 am

2 stops19h 40m

Porto

Sat 11/8

8:20 am-11:52 pm

2 stops22h 32m

$708

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Thu 10/2

8:40 pm-8:20 pm

1 stop15h 40m

Porto

Thu 10/16

9:55 am-6:30 pm

1 stop16h 35m

$708

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sun 10/5

7:30 am-6:15 pm

2 stops26h 45m

Porto

Mon 10/20

6:15 am-10:22 am

2 stops36h 07m

$724

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 11 results
1
2

Best time to book a flight from Sky Harbor Intl to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Sky Harbor Intl 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.

Cheapflights Insights

Everything you need to know about your flight from Phoenix Sky Harbor Intl Airport to Porto

How far ahead should I book a flight from Phoenix Sky Harbor Intl Airport to Porto?

Use this chart to determine the optimal time to book a round-trip flight from Sky Harbor Intl to Porto. Price data was last updated on August 8, 2025.

The best time to book flights from Phoenix Sky Harbor Intl Airport to Porto is 17 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Porto?

Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Porto (average of $523). Flying from Phoenix Sky Harbor Intl Airport to Porto in June is currently the most expensive (average of $1,029). 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.

What is the cheapest time of day to fly from PHX to OPO?

Find hourly flight availability from Sky Harbor Intl to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

It’s typically best to fly out from Phoenix Sky Harbor Intl Airport to Porto in the afternoon. Doing so could potentially save you 20% on the flight price compared to flying at noon, which is usually more expensive.

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 August 14, 2025.
See what other customers who have flown with Delta, KLM, and United Airlines from Phoenix Sky Harbor Intl Airport to Porto have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,381 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,916 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
British Airways
6.7
Okay
7,266 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Sky Harbor Intl to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Porto from Phoenix Sky Harbor Intl?

    Porto (OPO), located 6.8 mi from the city center, is the airport you fly into when you book flights from Phoenix Sky Harbor Intl to Porto. 7 airlines have flights to Porto from Phoenix Sky Harbor Intl on a regular basis. Booking flights from Phoenix Sky Harbor Intl to Porto should not be difficult; the airport handles an average of 0 inbound flights from Phoenix Sky Harbor Intl per day.

  • What are the cheapest airlines flying from Phoenix Sky Harbor Intl Airport to Porto round-trip?

    Flying on Air Canada is currently your cheapest option to Porto, with prices starting at $568. Additional round-trip tickets that might be worth considering are offered by KLM and United Airlines, with the lowest prices starting at $579 and $585, respectively. Users have found that Air Canada is 32% cheaper than the other options available to this destination.

  • Can I find deals for flights from Sky Harbor Intl to Porto that include hotel bookings?

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

  • How can I find direct flights from Sky Harbor Intl to Porto?

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

  • Can I find deals for business class flights from Sky Harbor Intl to Porto?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl 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 Phoenix Sky Harbor Intl Airport to Porto?

    Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Porto (average of $523). Flying from Phoenix Sky Harbor Intl Airport to Porto in June is currently the most expensive (average of $1,029). 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

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Alternative routes for Sky Harbor Intl to Porto

See prices for flight routes from nearby airports that may be better suited for you.
Sky Harbor Intl to Lisbon flights
Sky Harbor Intl to Faro flights
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Top 7 airlines flying from Sky Harbor Intl to Porto

Discover the top 7 airlines that operate flights from Sky Harbor Intl 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$568Average$697FlexibilityNo cancel feeOn-time67%
KLMCheapest$579Average$743FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$585Average$1,026FlexibilityNo cancel feeOn-time69%
DeltaCheapest$586Average$744FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$592Average$702FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$600Average$748FlexibilityNo cancel feeOn-time70%
Air TransatCheapest$797Average$807FlexibilityNo cancel feeOn-time50%

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