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$429+ Cheap flights from Phoenix 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — OPO
Jan 4 — Jan 111
Sun 1/4
Sun 1/11
1 adult, Economy
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Cheapflights Tip: The best prices from Phoenix to Porto are usually found in November or March, booked 28 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Phoenix to Porto

Cheapest flights from Phoenix to Porto
Explore the most affordable flight options available from Phoenix to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 5, 2025.

This KLM deal was found by Cheapflights users on 12/3. 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 12/3012:15 pmPHX - OPO
2 stops20h 10mKLM
Fri 1/305:00 amOPO - PHX
2 stops18h 19mKLM
Deal found 12/3$662
This United Airlines deal was found by Cheapflights users on 12/4. 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.
Sun 12/287:40 pmPHX - OPO
2 stops36h 15mUnited Airlines
Fri 1/3012:30 pmOPO - PHX
2 stops39h 07mUnited Airlines
Deal found 12/4$778
This KLM deal was found by Cheapflights users on 12/3. 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.
Sun 12/283:50 pmPHX - OPO
1 stop35h 40mKLM
Fri 1/305:00 amOPO - PHX
2 stops21h 04mKLM
Deal found 12/3$883
This Expedia deal was found by Cheapflights users on 12/3. 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 12/411:59 pmPHX - OPO
2 stops32h 11mMultiple Airlines
Wed 12/1010:55 amOPO - PHX
2 stops54h 14mMultiple Airlines
Deal found 12/3$1,196
This Air Europa deal was found by Cheapflights users on 12/4. 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 Europa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:34 amPHX - OPO
2 stops25h 41mMultiple Airlines
Tue 12/1611:35 amOPO - PHX
2 stops31h 10mMultiple Airlines
Deal found 12/4$1,366

Find flight deals from Phoenix to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Phoenix (PH1) 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 December 5, 2025.

Round-trip from

$546
(Air Canada)

One-way from

$429
(United Airlines)

Popular in

December

Cheapest in

November

Average price

$1,827
From Phoenix to Porto
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One-way flight from Phoenix to Porto
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Highest demand for flights based on searches. 17% potential increase in price ($189 potential increase over avg. RT price).
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Cheapest flight prices on average. 11% potential price decrease ($87 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Phoenix 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 December 5, 2025.
Use the filters below to find and compare flights from Phoenix to Porto that are best for you.

Fly from

Phoenix

Fly to

Porto

Route

Depart

Return

Price

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sat 1/10

1:20 pm-10:30 am

2 stops38h 10m

Porto

Mon 1/26

11:15 am-10:49 pm

2 stops42h 34m

$548

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Mon 4/20

7:10 am-9:45 am

2 stops18h 35m

Porto

Thu 4/30

6:00 am-9:44 pm

2 stops23h 44m

$549

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Mon 4/20

6:00 am-9:45 am

1 stop19h 45m

Porto

Thu 4/30

4:35 pm-8:20 pm

2 stops35h 45m

$556

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Thu 2/26

11:10 am-9:30 am

1 stop15h 20m

Porto

Wed 3/4

6:00 am-11:03 pm

2 stops24h 03m

$602

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sat 5/9

9:05 pm-8:35 pm

1 stop15h 30m

Porto

Tue 5/19

12:25 pm-11:30 pm

2 stops19h 05m

$608

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Fri 1/16

8:30 am-11:40 am

2 stops20h 10m

Porto

Tue 1/20

6:00 am-10:59 pm

2 stops23h 59m

$621

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sat 1/17

12:45 pm-6:35 pm

2 stops22h 50m

Porto

Sat 1/24

6:00 am-11:44 am

2 stops36h 44m

$632

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Thu 2/26

11:10 am-9:30 am

1 stop15h 20m

Porto

Wed 3/4

4:15 pm-8:41 pm

2 stops35h 26m

$643

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Fri 3/20

3:50 pm-10:30 am

1 stop35h 40m

Porto

Mon 3/30

4:20 pm-12:45 pm

1 stop28h 25m

$647

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Wed 4/8

8:30 am-9:45 am

2 stops17h 15m

$429

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 16 results
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Best time to book a flight from Phoenix to Porto

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

How far ahead should I book a flight from Phoenix to Porto?

Use this chart to determine the optimal time to book a round-trip flight from Phoenix to Porto. Price data was last updated on November 28, 2025.

The price you pay for your flight from Phoenix to Porto may vary depending on when you book. For the best chance of a lower fare, look to book 27 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Phoenix to Porto?

Currently, November is the cheapest month in which you can book a flight from Phoenix to Porto (average of $564). Flying from Phoenix to Porto in June is currently the most expensive (average of $856). 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 Phoenix 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 December 5, 2025.

It’s typically best to fly out from Phoenix to Porto in the afternoon. Doing so could potentially save you 12% 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 December 5, 2025.
Get a feel of what it's like to fly with Delta, Air Transat, and United Airlines from Phoenix to Porto by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,010 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,010 reviews
Delta
7.9
Good
8,010 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Transat
7.8
Good
480 reviews
Delta
7.9
Good
8,010 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,065 reviews
Delta
7.9
Good
8,010 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,047 reviews
Delta
7.9
Good
8,010 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,562 reviews
Delta
7.9
Good
8,010 reviews

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Phoenix 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?

    If you book a flight to Porto from Phoenix, you will be flying to Porto, which is the city’s only airport. Porto (OPO) is located 6.8 mi from the center of Porto. There are 0 flights from Phoenix to Porto per day from 6 different airlines.

  • How long is the flight from Phoenix to Porto?

    There are many flights that can get you from Phoenix to Porto in 18h 35m. Fly via Delta, United Airlines, or Lufthansa to get the fastest option. There are 5342 mi between Phoenix and Porto. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Phoenix to Porto round-trip?

    Cheapflights users have booked flights from Phoenix to Porto round-trip from $568. Other airlines that can offer you cheap pricing are United Airlines, from $585, and American Airlines, from $592. Air Canada is 34% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Phoenix 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 to Porto?

    Currently, November is the cheapest month in which you can book a flight from Phoenix to Porto (average of $564). Flying from Phoenix to Porto in June is currently the most expensive (average of $856). 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
Vila Nova de Gaia

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Phoenix to Porto

Discover the top 6 airlines that operate flights from Phoenix 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 December 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$568Average$697FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$585Average$915FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$592Average$743FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$600Average$748FlexibilityNo cancel feeOn-time70%
DeltaCheapest$623Average$762FlexibilityNo cancel feeOn-timeN/A
Air TransatCheapest$797Average$807FlexibilityNo cancel feeOn-time50%

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