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$374+ 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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — OPO
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$645
(Booking.com)

One-way from

$374
(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 ($96 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 June 12, 2025.

This Booking.com deal was found by Cheapflights users on 6/11. 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.
Sat 8/167:40 amPHX - OPO
1 stop17h 55mAir Canada
Sun 8/2411:20 amOPO - PHX
2 stops40h 57mAir Canada
Deal found 6/11$645
This United Airlines deal was found by Cheapflights users on 6/9. 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.
Sat 9/2012:38 pmPHX - OPO
1 stop13h 07mUnited Airlines
Sat 10/46:00 amOPO - PHX
3 stops39h 14mUnited Airlines
Deal found 6/9$651
This FlightHub deal was found by Cheapflights users on 6/11. 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.
Sat 12/612:50 pmPHX - OPO
2 stops43h 25mMultiple Airlines
Sat 12/1312:00 pmOPO - PHX
2 stops41h 44mMultiple Airlines
Deal found 6/11$674
This Ovago deal was found by Cheapflights users on 6/11. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/14:39 pmPHX - OPO
2 stops36h 06mBritish Airways
Sat 11/88:40 pmOPO - PHX
2 stops28h 37mBritish Airways
Deal found 6/11$681
This Delta deal was found by Cheapflights users on 6/11. 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 10/63:05 pmPHX - OPO
1 stop16h 25mDelta
Mon 10/136:30 amOPO - PHX
2 stops20h 28mDelta
Deal found 6/11$702
This Expedia deal was found by Cheapflights users on 6/11. 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.
Sat 8/167:04 amPHX - OPO
2 stops20h 26mSWISS
Sat 8/233:05 amOPO - PHX
2 stops28h 04mSWISS
Deal found 6/11$927
This Air France deal was found by Cheapflights users on 6/11. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/23:05 pmPHX - OPO
1 stop16h 25mAir France
Fri 7/119:20 amOPO - PHX
2 stops20h 18mAir France
Deal found 6/11$1,124
This FlightHub deal was found by Cheapflights users on 6/10. 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 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 15mAir Transat
Thu 7/31:30 pmOPO - PHX
1 stop30h 10mAir Transat
Deal found 6/10$1,275
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/169:59 pmPHX - OPO
2 stops57h 51mTurkish Airlines
Fri 9/2610:45 amOPO - PHX
2 stops42h 11mTurkish Airlines
Deal found 6/12$4,164
This AranGrant deal was found by Cheapflights users on 6/11. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/911:12 amPHX - OPO
2 stops15h 43mLufthansa
Wed 7/166:15 amOPO - PHX
2 stops20h 11mLufthansa
Deal found 6/11$4,350

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 June 12, 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

Sat 8/16

7:40 am-9:35 am

1 stop17h 55m

Porto

Sun 8/24

11:20 am-8:17 pm

2 stops40h 57m

$645

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sat 9/20

9:30 am-9:45 am

2 stops16h 15m

Porto

Sat 10/4

6:00 am-1:14 pm

3 stops39h 14m

$651

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sat 12/6

12:50 pm-3:15 pm

2 stops43h 25m

Porto

Sat 12/13

12:00 pm-10:44 pm

2 stops41h 44m

$674

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sat 11/1

4:39 pm-11:45 am

2 stops36h 06m

Porto

Sat 11/8

8:40 pm-6:17 pm

2 stops28h 37m

$681

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Mon 10/6

3:05 pm-3:30 pm

1 stop16h 25m

Porto

Mon 10/13

6:30 am-6:58 pm

2 stops20h 28m

$702

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sat 8/16

7:04 am-11:30 am

2 stops20h 26m

Porto

Sat 8/23

3:05 am-11:09 pm

2 stops28h 04m

$927

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Wed 7/2

3:05 pm-3:30 pm

1 stop16h 25m

Porto

Fri 7/11

9:20 am-9:38 pm

2 stops20h 18m

$1,124

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Fri 7/11

12:40 pm-11:45 am

1 stop15h 05m

Porto

Fri 7/18

1:30 pm-11:40 am

1 stop30h 10m

$1,490

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Tue 9/16

9:59 pm-3:50 pm

2 stops57h 51m

Porto

Fri 9/26

10:45 am-8:56 pm

2 stops42h 11m

$4,164

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Wed 7/9

11:12 am-10:55 am

2 stops15h 43m

Porto

Wed 7/16

6:15 am-6:26 pm

2 stops20h 11m

$4,350

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 15 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 9, 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 $1,047). 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 June 12, 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 June 12, 2025.
Read through reviews of airlines operating flights from Phoenix to Porto, such as Delta, KLM and Air Transat. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

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
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

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
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

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
396 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

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 France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

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
1,623 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

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. 7 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 Air Canada is currently your cheapest option to Porto, with prices starting at $645. Additional round-trip tickets that might be worth considering are offered by United Airlines and British Airways, with the lowest prices starting at $651 and $681, respectively. Users have found that Air Canada is 25% 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 Canada. According to our data, you can fly for as low as $489. Users have also found prices from $490 and $494 on British Airways 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 $1,047). 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.
Sky Harbor Intl to Lisbon flights
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Sky Harbor Intl to Ponta Delgada flights

Top 7 airlines flying from Sky Harbor Intl to Porto

Discover the top 7 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$568Average$781FlexibilityNo cancel feeOn-time67%
KLMCheapest$579Average$870FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$585Average$1,071FlexibilityNo cancel feeOn-time69%
DeltaCheapest$590Average$815FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$592Average$684FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$677Average$748FlexibilityNo cancel feeOn-time70%
Air TransatCheapest$797Average$807FlexibilityNo cancel feeOn-time50%

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