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$340+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — OPO
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheapflights Tip: The best prices from Phoenix 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 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 July 31, 2025.

Round-trip from

$589
(United Airlines)

One-way from

$340
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$1,019
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. 11% potential increase in price ($113 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 July 2025
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Find 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 July 31, 2025.

This United Airlines deal was found by Cheapflights users on 7/31. 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.
Wed 11/512:50 pmPHX - OPO
1 stop13h 40mUnited Airlines
Wed 11/126:00 amOPO - PHX
2 stops22h 21mUnited Airlines
Deal found 7/31$589
This Air Canada deal was found by Cheapflights users on 7/29. 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.
Mon 11/178:00 amPHX - OPO
2 stops20h 15mAir Canada
Tue 12/26:00 amOPO - PHX
2 stops36h 49mAir Canada
Deal found 7/29$602
This SWISS deal was found by Cheapflights users on 7/29. 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.
Tue 11/184:44 pmPHX - OPO
2 stops35h 31mSWISS
Mon 12/112:05 pmOPO - PHX
2 stops40h 54mSWISS
Deal found 7/29$617
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1712:59 amPHX - OPO
2 stops26h 31mDelta
Fri 12/511:25 amOPO - PHX
2 stops20h 16mDelta
Deal found 7/29$627
This Booking.com deal was found by Cheapflights users on 7/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/143:45 pmPHX - OPO
2 stops23h 35mMultiple Airlines
Tue 10/216:00 amOPO - PHX
2 stops21h 41mMultiple Airlines
Deal found 7/29$629
This Lufthansa deal was found by Cheapflights users on 7/29. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/192:51 pmPHX - OPO
2 stops17h 34mLufthansa
Mon 12/14:15 pmOPO - PHX
2 stops34h 32mLufthansa
Deal found 7/29$636
This KLM deal was found by Cheapflights users on 7/29. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/203:50 pmPHX - OPO
1 stop35h 40mAir France
Wed 12/311:25 amOPO - PHX
2 stops18h 26mAir France
Deal found 7/29$655
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/48:56 amPHX - OPO
2 stops18h 44mAmerican Airlines
Sat 10/118:15 amOPO - PHX
2 stops21h 04mAmerican Airlines
Deal found 7/29$670
This KLM deal was found by Cheapflights users on 7/29. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/143:05 pmPHX - OPO
1 stop16h 25mKLM
Tue 10/216:15 amOPO - PHX
2 stops20h 50mKLM
Deal found 7/29$673

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 July 31, 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

Wed 11/5

12:50 pm-9:30 am

1 stop13h 40m

Porto

Wed 11/12

6:00 am-9:21 pm

2 stops22h 21m

$589

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Mon 11/17

8:00 am-11:15 am

2 stops20h 15m

Porto

Tue 12/2

6:00 am-11:49 am

2 stops36h 49m

$602

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Tue 11/18

4:44 pm-11:15 am

2 stops35h 31m

Porto

Mon 12/1

12:05 pm-9:59 pm

2 stops40h 54m

$617

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Mon 11/17

12:59 am-10:30 am

2 stops26h 31m

Porto

Fri 12/5

11:25 am-12:41 am

2 stops20h 16m

$627

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Tue 10/14

3:45 pm-11:20 pm

2 stops23h 35m

Porto

Tue 10/21

6:00 am-7:41 pm

2 stops21h 41m

$629

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Wed 11/19

2:51 pm-3:25 pm

2 stops17h 34m

Porto

Mon 12/1

4:15 pm-7:47 pm

2 stops34h 32m

$636

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Thu 11/20

3:50 pm-10:30 am

1 stop35h 40m

Porto

Wed 12/3

11:25 am-1:35 pm

1 stop33h 10m

$658

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sat 10/4

8:56 am-11:40 am

2 stops18h 44m

Porto

Sat 10/11

8:15 am-9:19 pm

2 stops21h 04m

$670

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Tue 10/14

3:05 pm-3:30 pm

1 stop16h 25m

Porto

Tue 10/21

6:15 am-7:05 pm

2 stops20h 50m

$673

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Wed 9/17

8:00 am-1:55 pm

2 stops45h 55m

$340

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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 July 25, 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 17 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 $523). Flying from Phoenix to Porto in June is currently the most expensive (average of $1,033). 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 July 31, 2025.

It’s typically best to fly out from Phoenix 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 July 31, 2025.
Get a feel of what it's like to fly with Delta, KLM, and Air France 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
8.0
Very good
7,980 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

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

Food

7.3

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

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
1,383 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

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 France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

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
1,686 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

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
8,902 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

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 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 7 different airlines.

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

    Cheapflights users have booked flights from Phoenix to Porto round-trip from $589. Other airlines that can offer you cheap pricing are Air Canada, from $602, and SWISS, from $617. United Airlines is 30% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Phoenix to Porto one-way?

    The cheapest airlines for a one-way flight from Phoenix to Porto are Lufthansa ($624), Air Canada ($644), and United Airlines ($649).

  • 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 $523). Flying from Phoenix to Porto in June is currently the most expensive (average of $1,033). 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
Coimbra

Browse thousands of different options on Cheapflights for your next trip

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Top 7 airlines flying from Phoenix to Porto

Discover the top 7 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$568Average$697FlexibilityNo cancel feeOn-time67%
KLMCheapest$579Average$869FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$585Average$1,061FlexibilityNo cancel feeOn-time69%
DeltaCheapest$586Average$761FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$592Average$694FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$600Average$748FlexibilityNo cancel feeOn-time70%
Air TransatCheapest$797Average$807FlexibilityNo cancel feeOn-time50%

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