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$389+ 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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — OPO
may. 14 — may. 211
jue. 5/14
jue. 5/21
1 adult, Economy
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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 abril 14, 2026.

This United Airlines deal was found by Cheapflights users on 4/12. 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.
mar. 11/31:00 pm
PHX
-
OPO
1 stop13h 30m
United Airlines
mar. 11/176:00 am
OPO
-
PHX
2 stops19h 55m
United Airlines
Deal found 4/12$718
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.
sáb. 12/511:59 pm
PHX
-
OPO
1 stop26h 06m
KLM
mié. 12/95:00 am
OPO
-
PHX
2 stops18h 57m
KLM
Deal found 4/14$725
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.
sáb. 12/511:59 pm
PHX
-
OPO
1 stop26h 06m
Multiple Airlines
mié. 12/95:40 am
OPO
-
PHX
1 stop14h 55m
Multiple Airlines
Deal found 4/14$728
This United Airlines deal was found by Cheapflights users on 4/12. 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.
mar. 12/82:40 pm
PHX
-
OPO
2 stops17h 35m
United Airlines
vie. 12/116:00 am
OPO
-
PHX
2 stops23h 44m
United Airlines
Deal found 4/12$738
This KLM deal was found by Cheapflights users on 4/12. 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.
mar. 11/311:59 pm
PHX
-
OPO
1 stop26h 06m
KLM
mar. 11/1711:25 am
OPO
-
PHX
1 stop33h 10m
KLM
Deal found 4/12$741
This United Airlines deal was found by Cheapflights users on 4/10. 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.
sáb. 11/712:59 am
PHX
-
OPO
2 stops25h 31m
United Airlines
mié. 11/1112:35 pm
OPO
-
PHX
2 stops31h 39m
United Airlines
Deal found 4/10$742
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/55:34 pm
PHX
-
OPO
2 stops38h 41m
United Airlines
mié. 12/96:00 am
OPO
-
PHX
2 stops20h 42m
United Airlines
Deal found 4/14$743
This Air Canada deal was found by Cheapflights users on 4/13. 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.
dom. 10/1112:40 pm
PHX
-
OPO
2 stops58h 20m
Air Canada
mar. 10/2012:15 pm
OPO
-
PHX
2 stops55h 41m
Air Canada
Deal found 4/13$775
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.
mié. 10/1412:00 pm
PHX
-
OPO
1 stop14h 30m
KLM
sáb. 10/245:00 am
OPO
-
PHX
2 stops19h 35m
KLM
Deal found 4/14$794

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 abril 14, 2026.

Round-trip from

$775
(Air Canada)

One-way from

$440
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$762
From Phoenix to Porto
Search Deals
One-way flight from Phoenix to Porto
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($221 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
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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 abril 14, 2026.
Use the filters below to find and compare flights from Phoenix to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

jue. 10/1

11:59 pm-9:45 am

2 stops25h 46m

Porto

mié. 10/14

12:45 pm-2:54 pm

2 stops34h 09m

$842
Quickest round-trip

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

lun. 10/5

7:55 am-7:00 am

1 stop15h 05m

Porto

dom. 10/18

11:20 am-7:16 pm

1 stop15h 56m

$850

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

dom. 10/4

3:25 pm-3:30 pm

1 stop16h 05m

Porto

vie. 10/16

5:00 am-4:35 pm

2 stops19h 35m

$904

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

dom. 10/4

3:25 pm-10:00 pm

1 stop22h 35m

Porto

vie. 10/16

12:45 pm-10:59 pm

1 stop18h 14m

$911

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

lun. 10/5

11:45 pm-7:00 am

2 stops23h 15m

Porto

dom. 10/18

11:20 am-8:20 pm

3 stops41h 00m

$942

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

vie. 7/17

6:47 pm-7:00 am

2 stops28h 13m

Porto

jue. 7/30

11:50 am-5:53 pm

2 stops38h 03m

$976

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

mar. 9/1

3:25 pm-3:25 pm

1 stop16h 00m

Porto

lun. 9/14

5:00 am-4:34 pm

2 stops19h 34m

$984

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

mar. 9/1

3:25 pm-10:05 pm

1 stop22h 40m

Porto

lun. 9/14

12:15 pm-10:58 pm

1 stop18h 43m

$992
Cheapest one-way

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

lun. 10/5

10:30 am-7:00 am

3 stops36h 30m

$411
Quickest one-way

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

vie. 7/17

7:55 am-7:00 am

1 stop15h 05m

$492

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/10

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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 April 10, 2026.

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 85 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, January is the cheapest month in which you can book a flight from Phoenix to Porto (average of $476). Flying from Phoenix to Porto in June is currently the most expensive (average of $892). 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.

How much does it cost to fly round-trip from Phoenix to Porto?

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 abril 14, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican 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
8,404 reviews

Entertainment

7.8

Comfort

7.9

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

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
8,404 reviews
Delta
7.9
Good
8,404 reviews

Entertainment

7.8

Comfort

7.9

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

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
9,587 reviews
Delta
7.9
Good
8,404 reviews

Entertainment

7.8

Comfort

7.9

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

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
7.1
Good
11,580 reviews
Delta
7.9
Good
8,404 reviews

Entertainment

7.8

Comfort

7.9

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

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
7,885 reviews
Delta
7.9
Good
8,404 reviews

Entertainment

7.8

Comfort

7.9

Crew

8.5

Food

7.2

Overall

7.9

Boarding

8.1

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 4 different airlines.

  • How long is the flight from Phoenix to Porto?

    There are many flights that can get you from Phoenix to Porto in 20h 25m. Fly via Air Canada, KLM, or United Airlines 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 $460. Other airlines that can offer you cheap pricing are British Airways, from $523, and United Airlines, from $597. American Airlines is 44% 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, January is the cheapest month in which you can book a flight from Phoenix to Porto (average of $476). Flying from Phoenix to Porto in June is currently the most expensive (average of $892). 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
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 Phoenix to Porto

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Phoenix to Porto

Discover the top 4 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 abril 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$460Average$730FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$523Average$748FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$597Average$887FlexibilityNo cancel feeOn-time69%
DeltaCheapest$646Average$1,044FlexibilityNo cancel feeOn-timeN/A

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