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$404+ Cheap flights from Sky Harbor Intl (PHX) to Porto (OPO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — OPO
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
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Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Porto are usually found in March or November, 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 April 15, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$588
(American Airlines)

One-way from

$404
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$762
Provider with most accurate pricing for Phoenix Sky Harbor Intl-Porto flight deals.
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Provider most trusted by Cheapflights users for Phoenix Sky Harbor Intl-Porto flights.
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From Phoenix Sky Harbor Intl to Porto
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One-way flight from Phoenix Sky Harbor Intl to Porto
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Highest demand for flights based on searches. 10% potential increase in price ($96 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($62 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 15, 2025.

This American Airlines deal was found by Cheapflights users on 4/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/132:03 pmPHX - OPO
2 stops17h 52mAmerican Airlines
Fri 5/238:15 amOPO - PHX
2 stops19h 33mAmerican Airlines
Deal found 4/14$588
This United deal was found by Cheapflights users on 4/14. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/109:41 amPHX - OPO
1 stop13h 14mUnited Airlines
Thu 8/2812:10 pmOPO - PHX
2 stops34h 15mUnited Airlines
Deal found 4/14$600
This Expedia deal was found by Cheapflights users on 4/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/53:40 pmPHX - OPO
2 stops32h 15mSWISS
Mon 5/197:20 pmOPO - PHX
2 stops34h 53mSWISS
Deal found 4/14$647
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2810:15 amPHX - OPO
2 stops21h 15mDelta
Sun 10/195:00 amOPO - PHX
2 stops21h 11mDelta
Deal found 4/14$666
This Orbitz deal was found by Cheapflights users on 4/14. 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.
Fri 5/161:33 pmPHX - OPO
2 stops25h 47mLufthansa
Fri 5/236:15 amOPO - PHX
2 stops22h 24mLufthansa
Deal found 4/14$687
This Expedia deal was found by Cheapflights users on 4/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/111:05 amPHX - OPO
2 stops23h 25mMultiple Airlines
Sun 5/46:15 amOPO - PHX
2 stops22h 47mMultiple Airlines
Deal found 4/14$720
This Justfly.com deal was found by Cheapflights users on 4/15. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/257:40 amPHX - OPO
1 stop17h 55mAir Canada
Tue 9/3012:50 pmOPO - PHX
2 stops32h 00mAir Canada
Deal found 4/15$728
This KLM deal was found by Cheapflights users on 4/14. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/133:05 pmPHX - OPO
1 stop16h 25mKLM
Fri 5/239:20 amOPO - PHX
2 stops18h 48mKLM
Deal found 4/14$752
This British Airways deal was found by Cheapflights users on 4/14. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/118:40 pmPHX - OPO
1 stop15h 40mBritish Airways
Mon 9/229:10 pmOPO - PHX
1 stop25h 05mBritish Airways
Deal found 4/14$803
This FlightHub deal was found by Cheapflights users on 4/14. 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.
Wed 6/1812:40 pmPHX - OPO
1 stop15h 05mAir Transat
Thu 7/31:30 pmOPO - PHX
1 stop30h 10mAir Transat
Deal found 4/14$918
This Aeromexico deal was found by Cheapflights users on 4/14. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/133:05 pmPHX - OPO
1 stop16h 25mAir France
Fri 5/234:20 pmOPO - PHX
1 stop28h 30mAir France
Deal found 4/14$1,045
This FlightHub deal was found by Cheapflights users on 4/14. 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.
Sun 5/2510:23 pmPHX - OPO
1 stop28h 32mTAP AIR PORTUGAL
Wed 6/186:10 pmOPO - PHX
1 stop35h 46mTAP AIR PORTUGAL
Deal found 4/14$1,730

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 April 15, 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

Tue 5/13

2:03 pm-3:55 pm

2 stops17h 52m

Porto

Fri 5/23

8:15 am-7:48 pm

2 stops19h 33m

$588

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sun 8/10

9:41 am-6:55 am

1 stop13h 14m

Porto

Thu 8/28

12:10 pm-2:25 pm

2 stops34h 15m

$600

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Mon 5/5

3:40 pm-7:55 am

2 stops32h 15m

Porto

Mon 5/19

7:20 pm-10:13 pm

2 stops34h 53m

$647

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sun 9/28

10:15 am-3:30 pm

2 stops21h 15m

Porto

Sun 10/19

5:00 am-6:11 pm

2 stops21h 11m

$666

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Fri 5/16

1:33 pm-11:20 pm

2 stops25h 47m

Porto

Fri 5/23

6:15 am-8:39 pm

2 stops22h 24m

$687

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Thu 5/1

11:05 am-6:30 pm

2 stops23h 25m

Porto

Sun 5/4

6:15 am-9:02 pm

2 stops22h 47m

$720

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Mon 8/25

7:40 am-9:35 am

1 stop17h 55m

Porto

Tue 9/30

12:50 pm-12:50 pm

2 stops32h 00m

$728

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Tue 5/13

3:05 pm-3:30 pm

1 stop16h 25m

Porto

Fri 5/23

9:20 am-8:08 pm

2 stops18h 48m

$752

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Thu 9/11

8:40 pm-8:20 pm

1 stop15h 40m

Porto

Mon 9/22

9:10 pm-2:15 pm

1 stop25h 05m

$803

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Wed 6/18

12:40 pm-11:45 am

1 stop15h 05m

Porto

Thu 7/3

1:30 pm-11:40 am

1 stop30h 10m

$918

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 19 results
1
2

Compare providers for flights from Sky Harbor Intl to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sky Harbor Intl to Porto in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-Porto flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Phoenix Sky Harbor Intl Airport-Porto flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Phoenix Sky Harbor Intl Airport-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-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 Phoenix Sky Harbor Intl Airport-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 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 April 11, 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 $1,081). 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 April 15, 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.

Rainfall in Porto by month

Plan your trip to Porto by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

Plan your trip to Porto by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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 April 15, 2025.
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,917 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,323 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Transat
7.8
Good
385 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.5
Good
1,435 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,578 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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. 8 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 American Airlines is currently your cheapest option to Porto, with prices starting at $588. Additional round-trip tickets that might be worth considering are offered by United Airlines and SWISS, with the lowest prices starting at $600 and $647, respectively. Users have found that American Airlines is 32% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Porto one-way?

    For one-way options, check prices for Air Transat. According to our data, you can fly for as low as $486. Users have also found prices from $553 and $636 on KLM and Air France, respectively.

  • 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 $1,081). 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 Phoenix Sky Harbor Intl Airport?

Book flights to Phoenix Sky Harbor Intl Airport if you plan to visit one of these locations
Aveiro
Coimbra
Matosinhos
Arcos de Valdevez

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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.
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Top 8 airlines flying from Sky Harbor Intl to Porto

Discover the top 8 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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$483Average$652FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$568Average$750FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$573Average$674FlexibilityNo cancel feeOn-time71%
KLMCheapest$579Average$892FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$585Average$1,090FlexibilityNo cancel feeOn-time69%
DeltaCheapest$590Average$853FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$677Average$748FlexibilityNo cancel feeOn-time70%
Air TransatCheapest$797Average$807FlexibilityNo cancel feeOn-time50%

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