$424+ Cheap flights from Philadelphia (PHL) to Porto (OPO)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — OPO
Dec 4 — Dec 111
Round-trip
1 adult, Economy
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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”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Philadelphia to Porto
Cheapest
Best
Last-minute
One-way
Cheapest flights from Philadelphia to PortoExplore 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 November 4, 2026.
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 November 4, 2026.
This Mytrip deal was found by Cheapflights users on 10/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/114:47 pm -
2 stops26h 43m
Wed 11/187:00 am -
2 stops21h 54m
Deal found 10/31![Multiple Airlines logo]()
$592
This Gotogate deal was found by Cheapflights users on 10/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/295:40 pm -
1 stop13h 00m
Tue 12/86:00 am -
1 stop15h 05m
Deal found 10/31![Lufthansa logo]()
$837
This United deal was found by Cheapflights users on 10/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2910:30 am -
2 stops18h 00m
Tue 12/86:00 am -
1 stop15h 05m
Deal found 10/31![Multiple Airlines logo]()
$854
This United Airlines deal was found by Cheapflights users on 10/31. 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.
Tue 12/110:53 am -
2 stops17h 37m
Tue 12/86:00 am -
1 stop15h 05m
Deal found 10/31![United Airlines logo]()
$856
This United Airlines deal was found by Cheapflights users on 11/1. 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.
Mon 12/76:24 am -
2 stops22h 06m
Tue 12/156:00 am -
1 stop15h 05m
Deal found 11/1![United Airlines logo]()
$860
This Booking.com deal was found by Cheapflights users on 10/30. 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.
Mon 12/143:20 pm -
2 stops22h 25m
Mon 12/211:30 pm -
3 stops31h 35m
Deal found 10/30![Multiple Airlines logo]()
$868
This United Airlines deal was found by Cheapflights users on 10/31. 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.
Sun 11/296:00 am -
2 stops22h 30m
Tue 12/812:35 pm -
2 stops30h 37m
Deal found 10/31![United Airlines logo]()
$869
This KAYAK deal was found by Cheapflights users on 11/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/85:40 pm -
1 stop13h 05m
Thu 12/176:00 am -
1 stop15h 05m
Deal found 11/1![Lufthansa logo]()
$874
This United Airlines deal was found by Cheapflights users on 11/1. 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.
Mon 12/710:53 am -
2 stops17h 37m
Thu 12/1712:35 pm -
2 stops16h 59m
Deal found 11/1![United Airlines logo]()
$880
Best flights from Philadelphia to PortoDiscover carefully curated flight deals from Philadelphia to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 4, 2026.
Discover carefully curated flight deals from Philadelphia to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 4, 2026.
This Expedia deal was found by Cheapflights users on 10/30. 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.
Fri 1/294:40 pm -
2 stops18h 20m
Mon 2/18:40 pm -
1 stop23h 50m
Deal found 10/30![Iberia logo]()
$823
This United deal was found by Cheapflights users on 10/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2910:30 am -
2 stops18h 00m
Tue 12/86:00 am -
1 stop15h 05m
Deal found 10/31![Multiple Airlines logo]()
$854
This United Airlines deal was found by Cheapflights users on 10/31. 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.
Tue 12/110:53 am -
2 stops17h 37m
Tue 12/86:00 am -
1 stop15h 05m
Deal found 10/31![United Airlines logo]()
$856
This Priceline deal was found by Cheapflights users on 11/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/157:00 am -
1 stop22h 35m
Sat 5/158:30 am -
2 stops15h 22m
Deal found 11/3![TAP AIR PORTUGAL logo]()
$945
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/910:53 am -
2 stops17h 37m
Thu 12/176:00 am -
1 stop15h 05m
Deal found 11/1![United Airlines logo]()
$860
This United deal was found by Cheapflights users on 11/2. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/303:05 pm -
2 stops13h 25m
Mon 12/74:10 pm -
1 stop28h 55m
Deal found 11/2![Multiple Airlines logo]()
$892
This United Airlines deal was found by Cheapflights users on 11/1. 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.
Mon 12/76:24 am -
2 stops22h 06m
Tue 12/156:00 am -
1 stop15h 05m
Deal found 11/1![United Airlines logo]()
$860
This Booking.com deal was found by Cheapflights users on 10/30. 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.
Mon 12/143:20 pm -
3 stops21h 40m
Mon 12/211:30 pm -
3 stops31h 35m
Deal found 10/30![Multiple Airlines logo]()
$894
This United Airlines deal was found by Cheapflights users on 11/1. 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 11/296:00 am -
2 stops22h 30m
Sun 12/66:00 am -
1 stop15h 05m
Deal found 11/1![United Airlines logo]()
$910
Last-minute flights from Philadelphia to PortoDiscover last-minute flight deals from Philadelphia to Porto. Data last updated November 4, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Porto. Data last updated November 4, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 10/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/114:47 pm -
2 stops26h 43m
Wed 11/187:00 am -
2 stops21h 54m
Deal found 10/31![Multiple Airlines logo]()
$592
This Gotogate deal was found by Cheapflights users on 10/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/295:40 pm -
1 stop13h 00m
Tue 12/86:00 am -
1 stop15h 05m
Deal found 10/31![Lufthansa logo]()
$837
This United deal was found by Cheapflights users on 10/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2910:30 am -
2 stops18h 00m
Tue 12/86:00 am -
1 stop15h 05m
Deal found 10/31![Multiple Airlines logo]()
$854
This United Airlines deal was found by Cheapflights users on 10/31. 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.
Sun 11/296:00 am -
2 stops22h 30m
Tue 12/812:35 pm -
2 stops30h 37m
Deal found 10/31![United Airlines logo]()
$869
This United Airlines deal was found by Cheapflights users on 10/31. 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.
Tue 12/110:53 am -
2 stops17h 37m
Tue 12/86:00 am -
1 stop15h 05m
Deal found 10/31![United Airlines logo]()
$856
This United Airlines deal was found by Cheapflights users on 11/1. 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.
Mon 12/710:53 am -
2 stops17h 37m
Thu 12/176:00 am -
1 stop15h 05m
Deal found 11/1![United Airlines logo]()
$860
This United Airlines deal was found by Cheapflights users on 11/1. 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.
Mon 12/79:45 am -
2 stops18h 45m
Tue 12/1512:35 pm -
2 stops26h 07m
Deal found 11/1![United Airlines logo]()
$880
This KAYAK deal was found by Cheapflights users on 11/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/85:40 pm -
1 stop13h 05m
Tue 12/156:00 am -
1 stop15h 05m
Deal found 11/1![Lufthansa logo]()
$874
This Booking.com deal was found by Cheapflights users on 10/30. 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.
Mon 12/143:20 pm -
2 stops22h 25m
Mon 12/211:30 pm -
3 stops31h 35m
Deal found 10/30![Multiple Airlines logo]()
$868
One-way flights from Philadelphia to PortoSearch for one-way flight options from Philadelphia to Porto. Find affordable one-way fares based on user searches. Data last updated November 4, 2026.
Search for one-way flight options from Philadelphia to Porto. Find affordable one-way fares based on user searches. Data last updated November 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/159:07 pm -
2 stops40h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Multiple Airlines logo]()
$424
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/108:00 am -
3 stops33h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![Multiple Airlines logo]()
$436
This WAYA deal was found by Cheapflights users on 10/30. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/257:40 pm -
1 stop21h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![Multiple Airlines logo]()
$551
This United Airlines deal was found by Cheapflights users on 10/30. 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 12/226:51 pm -
2 stops57h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![United Airlines logo]()
$690
Find 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 November 4, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $762 (Expedia) |
One-way from | $424 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
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 7,457,451 searches. Data last updated November 4, 2026.
Use the filters below to find and compare flights from Philadelphia to Porto that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhiladelphiaPorto
PHL Philadelphia - OPO Porto
PHLOPO
Philadelphia
Fri 1/15
9:07 pm-6:45 pm
2 stops40h 38m
Porto
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$424
PhiladelphiaPorto
PHL Philadelphia - OPO Porto
PHLOPO
Philadelphia
Thu 12/10
8:00 am-10:25 pm
3 stops33h 25m
Porto
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$436
PhiladelphiaPorto
PHL Philadelphia - OPO Porto
PHLOPO
Philadelphia
Fri 12/25
7:40 pm-10:00 pm
1 stop21h 20m
Porto
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$551
PhiladelphiaPorto
PHL Philadelphia - OPO Porto
PHLOPO
Philadelphia
Tue 12/22
6:51 pm-9:30 am
2 stops57h 39m
Porto
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$690
PhiladelphiaPorto
PHL Philadelphia - OPO Porto
PHLOPO
Philadelphia
Fri 1/29
4:40 pm-4:00 pm
2 stops18h 20m
Porto
Mon 2/1
8:40 pm-3:30 pm
1 stop23h 50m
$823
PhiladelphiaPorto
PHL Philadelphia - OPO Porto
PHLOPO
Philadelphia
Sun 11/29
10:30 am-9:30 am
2 stops18h 00m
Porto
Tue 12/8
6:00 am-4:05 pm
1 stop15h 05m
$854
PhiladelphiaPorto
PHL Philadelphia - OPO Porto
PHLOPO
Philadelphia
Tue 12/1
10:53 am-9:30 am
2 stops17h 37m
Porto
Tue 12/8
6:00 am-4:05 pm
1 stop15h 05m
$856
PhiladelphiaPorto
PHL Philadelphia - OPO Porto
PHLOPO
Philadelphia
Wed 12/9
10:53 am-9:30 am
2 stops17h 37m
Porto
Thu 12/17
6:00 am-4:05 pm
1 stop15h 05m
$860
PhiladelphiaPorto
PHL Philadelphia - OPO Porto
PHLOPO
Philadelphia
Mon 12/7
6:24 am-9:30 am
2 stops22h 06m
Porto
Tue 12/15
6:00 am-4:05 pm
1 stop15h 05m
$860
PhiladelphiaPorto
PHL Philadelphia - OPO Porto
PHLOPO
Philadelphia
Mon 11/30
3:05 pm-9:30 am
2 stops13h 25m
Porto
Mon 12/7
4:10 pm-4:05 pm
1 stop28h 55m
$892
Showing 1-10 of 14 resultsSorted by cheapest first
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 November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Philadelphia-Porto flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Philadelphia-Porto flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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.
PHL-OPO
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.
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 November 4, 2026.
See what other customers who have flown with United Airlines,American Airlines, andIberia from Philadelphia to Porto have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Food
6.7
Overall
7.3
Crew
8.1
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Boarding
7.7
Food
6.7
Overall
7.3
Crew
8.1
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Boarding
7.7
Food
6.7
Overall
7.3
Crew
8.1
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Boarding
7.7
Food
6.7
Overall
7.3
Crew
8.1
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
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.
Traveling to a place near Porto?
Book flights to Porto if you plan to visit one of these locationsVila Nova de Gaia
Arcos de Valdevez
Coimbra
Aveiro
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Philadelphia and Porto flights
Browse other Philadelphia and Porto flight options. Last updated on November 4, 2026.
Other flights from Philadelphia
Browse through other flights departing from Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on November 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Porto
Explore flights to Porto departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on November 4, 2026.
Top 3 airlines flying from Philadelphia to Porto
Discover the top 3 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 7,457,451 searches. Data last updated November 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$489 | Average$925 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$496 | Average$915 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$758 | Average$1,161 | FlexibilityNo cancel fee | On-time71% |