Porto

$351+ Cheap flights from Philadelphia (PHL) 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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — OPO
Apr 20 — Apr 271
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Find cheap flights from Philadelphia to Porto with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from Philadelphia to Porto are usually found in December or April, booked 26 days in advance, depart on a Sunday or Saturday and return on a Tuesday

Cheap flight deals from Philadelphia to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) 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 April 15, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$583
(British Airways)

One-way from

$373
(Kiwi.com)

Popular in

June

Cheapest in

December

Average price

$671
Provider with most accurate pricing for Philadelphia-Porto flight deals.
Provider most trusted by Cheapflights users for Philadelphia-Porto flights.
From Philadelphia to Porto
One-way flight from Philadelphia to Porto
Highest demand for flights based on searches. 20% potential increase in price ($214 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).
Average for round-trip flights in April 2025

Find flight deals from Philadelphia to Porto

Cheapest flights from Philadelphia to Porto
Explore the most affordable flight options available from Philadelphia to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 15, 2025.

This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/279:00 pmPHL - OPO
1 stop19h 00mIberia
Mon 11/38:40 pmOPO - PHL
1 stop23h 55mIberia
Deal found 4/14$544
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/274:30 pmPHL - OPO
2 stops22h 10mMultiple Airlines
Mon 11/37:30 pmOPO - PHL
2 stops48h 20mMultiple Airlines
Deal found 4/14$546
This American Airlines deal was found by Cheapflights users on 4/15. 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.
Wed 10/156:35 pmPHL - OPO
2 stops12h 05mAmerican Airlines
Wed 10/298:40 pmOPO - PHL
1 stop23h 55mAmerican Airlines
Deal found 4/15$568
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.
Tue 10/2112:50 pmPHL - OPO
2 stops15h 55mUnited Airlines
Tue 10/286:00 amOPO - PHL
2 stops19h 32mUnited Airlines
Deal found 4/14$588
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/195:35 pmPHL - OPO
1 stop12h 40mLufthansa
Tue 10/286:00 amOPO - PHL
1 stop15h 00mLufthansa
Deal found 4/14$599
This Gurufare deal was found by Cheapflights users on 4/15. 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.
Tue 4/297:55 pmPHL - OPO
1 stop18h 35mBritish Airways
Tue 5/612:20 pmOPO - PHL
2 stops24h 05mBritish Airways
Deal found 4/15$605
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/74:50 pmPHL - OPO
2 stops20h 40mAir Canada
Tue 5/206:00 amOPO - PHL
2 stops21h 06mAir Canada
Deal found 4/14$628
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/710:43 amPHL - OPO
2 stops23h 47mDelta
Thu 7/319:20 amOPO - PHL
2 stops32h 19mDelta
Deal found 4/14$656
This Aeromexico 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/167:28 pmPHL - OPO
2 stops39h 02mAir France
Mon 6/304:20 pmOPO - PHL
2 stops35h 50mAir France
Deal found 4/14$841
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/16:00 amPHL - OPO
1 stop23h 35mTAP AIR PORTUGAL
Fri 6/66:05 pmOPO - PHL
2 stops34h 22mTAP AIR PORTUGAL
Deal found 4/14$927

Cheapflights Fare Finder

Customize your flight search to find flights from Philadelphia 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 April 15, 2025.
Use the filters below to find and compare flights from Philadelphia to Porto that are best for you.

Fly from

Philadelphia

Fly to

Porto

Route

Depart

Return

Price

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 4/27

10:10 pm-8:20 pm

1 stop17h 10m

Porto

Tue 5/13

4:35 pm-3:50 pm

1 stop28h 15m

$583

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 4/27

10:10 pm-8:20 pm

1 stop17h 10m

Porto

Tue 5/13

8:40 pm-7:25 am

2 stops39h 45m

$609

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 4/27

1:24 pm-3:35 pm

2 stops21h 11m

Porto

Tue 5/13

9:20 am-12:57 am

2 stops20h 37m

$618

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 5/7

4:50 pm-6:30 pm

2 stops20h 40m

Porto

Tue 5/20

6:00 am-10:06 pm

2 stops21h 06m

$628

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 9/2

10:30 am-7:35 am

2 stops16h 05m

Porto

Fri 9/19

8:15 am-10:58 pm

2 stops19h 43m

$665

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 5/14

5:35 pm-11:20 pm

2 stops24h 45m

Porto

Wed 5/21

6:00 am-4:00 pm

1 stop15h 00m

$666

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 7/7

3:20 pm-9:35 am

1 stop13h 15m

Porto

Fri 7/25

6:00 am-4:00 pm

1 stop15h 00m

$671

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 6/16

7:28 pm-3:30 pm

2 stops39h 02m

Porto

Mon 6/30

4:20 pm-11:10 pm

2 stops35h 50m

$841

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 6/1

6:00 am-10:35 am

1 stop23h 35m

Porto

Fri 6/6

6:05 pm-11:27 pm

2 stops34h 22m

$927

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Thu 7/3

8:15 am-6:30 pm

2 stops29h 15m

Porto

Tue 7/29

8:40 am-5:36 pm

2 stops37h 56m

$1,065

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 18 results
1
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Compare providers for flights from Philadelphia to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Porto in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-Porto flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Philadelphia-Porto flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Philadelphia-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Porto flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Philadelphia to Porto

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

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

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to Porto. Price data was last updated on April 11, 2025.

Booking 25 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia to Porto. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Philadelphia to Porto (average of $523). Flying from Philadelphia to Porto in June is currently the most expensive (average of $1,081). 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 PHL to OPO?

Find hourly flight availability from Philadelphia 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 April 15, 2025.

One of the essential ways to save on airfare from Philadelphia to Porto is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 13% on airfare.

What is the cheapest day to fly from Philadelphia to Porto?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Porto. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Philadelphia to Porto flight should consider departing on Friday at noon when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 April 15, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Air France from Philadelphia to Porto to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good
8.0
Very good

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What are the cheapest airlines flying from Philadelphia to Porto round-trip?

    According to our current data, British Airways ($605), Delta ($618), and Air Canada ($631) offers the cheapest pricing from Philadelphia to Porto. British Airways is currently priced 25% below the average price you’ll pay for this route.

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

    $549 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on KLM and Lufthansa, with prices starting from $557 and $558, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Philadelphia 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 Philadelphia to Porto?

    Currently, January is the cheapest month in which you can book a flight from Philadelphia to Porto (average of $523). Flying from Philadelphia to Porto in June is currently the most expensive (average of $1,081). 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 Philadelphia?

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Top 5 airlines flying from Philadelphia to Porto

Discover the top 5 airlines that operate flights from Philadelphia 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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$590Average$872FlexibilityNo cancel feeOn-time71%
DeltaCheapest$604Average$941FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$615Average$817FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$642Average$868FlexibilityNo cancel feeOn-time69%
IberiaCheapest$669Average$879FlexibilityNo cancel feeOn-time77%

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