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$295+ 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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — OPO
juil. 5 — juil. 121
sam. 7/5
sam. 7/12
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 juin 30, 2025.

Round-trip from

$692
(United Airlines)

One-way from

$295
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$1,116
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 ($101 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($63 potential savings vs. average RT price).
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Average for round-trip flights in June 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 juin 30, 2025.

This United Airlines deal was found by Cheapflights users on 6/29. 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.
sam. 11/16:25 pmPHX - OPO
2 stops37h 50mUnited Airlines
sam. 11/812:40 pmOPO - PHX
2 stops36h 16mUnited Airlines
Deal found 6/29$692
This American Airlines deal was found by Cheapflights users on 6/30. 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.
sam. 11/110:20 amPHX - OPO
2 stops18h 25mAmerican Airlines
sam. 11/88:40 pmOPO - PHX
2 stops19h 06mAmerican Airlines
Deal found 6/30$708
This Ticket deal was found by Cheapflights users on 6/28. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/137:40 amPHX - OPO
1 stop17h 40mMultiple Airlines
mer. 8/208:40 amOPO - PHX
2 stops19h 37mMultiple Airlines
Deal found 6/28$711
This SWISS deal was found by Cheapflights users on 6/29. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/1310:50 amPHX - OPO
2 stops37h 05mSWISS
mer. 8/208:40 amOPO - PHX
2 stops19h 37mSWISS
Deal found 6/29$777
This Air Canada deal was found by Cheapflights users on 6/29. 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.
mar. 9/28:30 pmPHX - OPO
2 stops28h 50mAir Canada
lun. 9/86:00 amOPO - PHX
2 stops37h 31mAir Canada
Deal found 6/29$850
This SmartFares deal was found by Cheapflights users on 6/28. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 9/1112:40 pmPHX - OPO
1 stop15h 05mAir Transat
sam. 9/201:30 pmOPO - PHX
1 stop30h 10mAir Transat
Deal found 6/28$905
This KLM deal was found by Cheapflights users on 6/28. 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.
jeu. 9/113:05 pmPHX - OPO
1 stop16h 25mKLM
sam. 9/206:05 amOPO - PHX
2 stops21h 59mKLM
Deal found 6/28$917
This Delta deal was found by Cheapflights users on 6/28. 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.
mer. 7/2312:10 pmPHX - OPO
2 stops19h 20mDelta
dim. 7/275:00 amOPO - PHX
2 stops19h 15mDelta
Deal found 6/28$1,061
This Gurufare deal was found by Cheapflights users on 6/28. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 7/57:45 amPHX - OPO
1 stop17h 50mLufthansa
sam. 7/126:00 amOPO - PHX
2 stops21h 15mLufthansa
Deal found 6/28$1,410

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 juin 30, 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

mer. 8/13

7:40 am-9:20 am

1 stop17h 40m

Porto

mer. 8/20

8:40 am-8:17 pm

2 stops19h 37m

$711

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

mer. 8/13

9:15 am-6:05 am

1 stop12h 50m

Porto

mer. 8/20

12:35 pm-9:12 am

2 stops28h 37m

$757

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

mer. 8/13

10:50 am-7:55 am

2 stops37h 05m

Porto

mer. 8/20

8:40 am-8:17 pm

2 stops19h 37m

$777

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

mar. 9/2

8:30 pm-9:20 am

2 stops28h 50m

Porto

lun. 9/8

6:00 am-11:31 am

2 stops37h 31m

$850

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

jeu. 9/11

1:39 pm-3:55 pm

2 stops18h 16m

Porto

sam. 9/20

8:15 am-7:47 pm

2 stops19h 32m

$883

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

jeu. 9/11

12:40 pm-11:45 am

1 stop15h 05m

Porto

sam. 9/20

1:30 pm-11:40 am

1 stop30h 10m

$905

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

jeu. 9/11

3:05 pm-3:30 pm

1 stop16h 25m

Porto

sam. 9/20

6:05 am-8:04 pm

2 stops21h 59m

$917

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

mer. 7/23

12:10 pm-3:30 pm

2 stops19h 20m

Porto

dim. 7/27

5:00 am-4:15 pm

2 stops19h 15m

$1,061

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

sam. 7/5

7:45 am-9:35 am

1 stop17h 50m

Porto

sam. 7/12

6:00 am-7:15 pm

2 stops21h 15m

$1,410

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

jeu. 8/7

7:30 am-8:00 am

2 stops40h 30m

$295

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

Showing 1-10 of 14 results
1
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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 June 27, 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 $1,038). 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 juin 30, 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 juin 30, 2025.
See what other customers who have flown with Delta, KLM, and Air Transat 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
7,969 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

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
7,969 reviews
Delta
8.0
Very good
7,969 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

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
1,366 reviews
Delta
8.0
Very good
7,969 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

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!
Air Transat
7.8
Good
405 reviews
Delta
8.0
Very good
7,969 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

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!
SWISS
7.5
Good
1,653 reviews
Delta
8.0
Very good
7,969 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

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
8,852 reviews
Delta
8.0
Very good
7,969 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

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. 6 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 United Airlines is currently your cheapest option to Porto, with prices starting at $692. Additional round-trip tickets that might be worth considering are offered by American Airlines and SWISS, with the lowest prices starting at $708 and $777, respectively. Users have found that United Airlines is 19% 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 $578 and $597 on Air Canada and United Airlines, 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 $1,038). 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

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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
Sky Harbor Intl to Ponta Delgada flights

Top 6 airlines flying from Sky Harbor Intl to Porto

Discover the top 6 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 juin 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$579Average$870FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$585Average$1,073FlexibilityNo cancel feeOn-time69%
DeltaCheapest$590Average$871FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$592Average$691FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$677Average$748FlexibilityNo cancel feeOn-time70%
Air TransatCheapest$797Average$807FlexibilityNo cancel feeOn-time50%

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