$340+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — OPO
Apr 9 — Apr 161
Round-trip
1 adult, Economy
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Find cheap flights from Philadelphia to Porto with Cheapflights
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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 March 10, 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 March 10, 2026.
This Delta deal was found by Cheapflights users on 3/7. 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.
Sun 4/196:00 am
PHL
- OPO
2 stops28h 25m
Delta
Tue 4/285:00 am
OPO
- PHL
2 stops23h 58m
Delta
Deal found 3/7![Delta logo]()
$562
This KLM deal was found by Cheapflights users on 3/8. 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.
Mon 3/93:36 pm
PHL
- OPO
2 stops14h 54m
Multiple Airlines
Tue 3/179:55 am
OPO
- PHL
2 stops17h 05m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$563
This Delta deal was found by Cheapflights users on 3/8. 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.
Wed 4/85:33 pm
PHL
- OPO
2 stops19h 47m
Delta
Wed 4/225:00 am
OPO
- PHL
2 stops22h 12m
Delta
Deal found 3/8![Delta logo]()
$567
This KLM deal was found by Cheapflights users on 3/8. 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.
Mon 3/95:33 pm
PHL
- OPO
2 stops17h 52m
KLM
Tue 3/175:00 am
OPO
- PHL
2 stops18h 49m
KLM
Deal found 3/8![KLM logo]()
$569
This British Airways deal was found by Cheapflights users on 3/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/126:40 pm
PHL
- OPO
1 stop20h 55m
Multiple Airlines
Tue 4/288:40 pm
OPO
- PHL
1 stop26h 00m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$572
This Delta deal was found by Cheapflights users on 3/6. 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.
Tue 4/146:58 pm
PHL
- OPO
2 stops15h 32m
Delta
Fri 4/245:55 am
OPO
- PHL
2 stops21h 55m
Delta
Deal found 3/6![Delta logo]()
$574
This British Airways deal was found by Cheapflights users on 3/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1310:30 am
PHL
- OPO
2 stops16h 10m
Multiple Airlines
Tue 4/288:40 pm
OPO
- PHL
1 stop26h 00m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$583
This Booking.com deal was found by Cheapflights users on 3/6. 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.
Sun 4/126:40 pm
PHL
- OPO
1 stop20h 55m
British Airways
Tue 4/2812:25 pm
OPO
- PHL
2 stops37h 33m
British Airways
Deal found 3/6![British Airways logo]()
$584
This Orbitz deal was found by Cheapflights users on 3/9. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1310:05 pm
PHL
- OPO
2 stops32h 40m
Iberia
Mon 4/208:40 pm
OPO
- PHL
2 stops49h 07m
Iberia
Deal found 3/9![Iberia logo]()
$591
This Delta deal was found by Cheapflights users on 3/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/49:42 am
PHL
- OPO
2 stops24h 43m
Delta
Wed 5/135:00 am
OPO
- PHL
2 stops17h 47m
Delta
Deal found 3/9![Delta logo]()
$592
This Expedia deal was found by Cheapflights users on 3/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/36:45 pm
PHL
- OPO
1 stop20h 50m
Multiple Airlines
Wed 5/138:40 pm
OPO
- PHL
1 stop26h 00m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$602
This Orbitz deal was found by Cheapflights users on 3/9. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/38:15 pm
PHL
- OPO
1 stop30h 25m
Iberia
Wed 5/138:40 pm
OPO
- PHL
1 stop26h 00m
Iberia
Deal found 3/9![Iberia logo]()
$604
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 March 10, 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 March 10, 2026.
This Delta deal was found by Cheapflights users on 3/6. 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.
Sun 4/126:55 pm
PHL
- OPO
2 stops18h 15m
Delta
Tue 4/285:00 am
OPO
- PHL
2 stops22h 50m
Delta
Deal found 3/6![Delta logo]()
$567
This British Airways deal was found by Cheapflights users on 3/5. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/126:40 pm
PHL
- OPO
1 stop20h 55m
Multiple Airlines
Tue 4/288:40 pm
OPO
- PHL
1 stop26h 00m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$572
This KLM deal was found by Cheapflights users on 3/7. 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 4/281:58 pm
PHL
- OPO
2 stops15h 57m
KLM
Sun 5/311:45 am
OPO
- PHL
2 stops15h 27m
KLM
Deal found 3/7![KLM logo]()
$617
This Delta deal was found by Cheapflights users on 3/8. 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.
Wed 4/85:33 pm
PHL
- OPO
2 stops19h 47m
Delta
Wed 4/225:00 am
OPO
- PHL
2 stops22h 12m
Delta
Deal found 3/8![Delta logo]()
$567
This Delta deal was found by Cheapflights users on 3/8. 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.
Wed 3/1812:26 pm
PHL
- OPO
2 stops18h 04m
Delta
Tue 3/2411:25 am
OPO
- PHL
2 stops15h 35m
Delta
Deal found 3/8![Delta logo]()
$569
This British Airways deal was found by Cheapflights users on 3/10. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/710:30 am
PHL
- OPO
2 stops16h 10m
Multiple Airlines
Tue 4/148:40 pm
OPO
- PHL
1 stop26h 00m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$633
This Delta deal was found by Cheapflights users on 3/5. 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 5/46:00 am
PHL
- OPO
2 stops28h 25m
Delta
Tue 5/1211:30 am
OPO
- PHL
2 stops39h 39m
Delta
Deal found 3/5![Delta logo]()
$592
This KLM deal was found by Cheapflights users on 3/8. 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.
Wed 4/2211:38 am
PHL
- OPO
2 stops18h 02m
KLM
Tue 4/285:00 am
OPO
- PHL
2 stops18h 23m
KLM
Deal found 3/8![KLM logo]()
$785
This Delta deal was found by Cheapflights users on 3/7. 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.
Sun 4/197:38 pm
PHL
- OPO
2 stops17h 32m
Delta
Thu 4/3011:25 am
OPO
- PHL
2 stops18h 34m
Delta
Deal found 3/7![Delta logo]()
$697
This Delta deal was found by Cheapflights users on 3/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:29 pm
PHL
- OPO
2 stops22h 36m
Delta
Sun 5/105:00 am
OPO
- PHL
2 stops17h 47m
Delta
Deal found 3/9![Delta logo]()
$712
This Delta deal was found by Cheapflights users on 3/6. 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.
Sat 5/23:00 pm
PHL
- OPO
2 stops19h 25m
Delta
Tue 5/125:00 am
OPO
- PHL
2 stops23h 07m
Delta
Deal found 3/6![Delta logo]()
$772
Last-minute flights from Philadelphia to PortoDiscover last-minute flight deals from Philadelphia to Porto. Data last updated March 10, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Porto. Data last updated March 10, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 3/8. 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.
Wed 3/1812:26 pm
PHL
- OPO
2 stops18h 04m
Delta
Tue 3/2411:25 am
OPO
- PHL
2 stops15h 35m
Delta
Deal found 3/8![Delta logo]()
$569
This Air France deal was found by Cheapflights users on 3/10. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/75:33 pm
PHL
- OPO
2 stops16h 52m
Multiple Airlines
Tue 4/145:00 am
OPO
- PHL
2 stops17h 23m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$612
This Delta deal was found by Cheapflights users on 3/8. 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.
Wed 4/85:33 pm
PHL
- OPO
2 stops19h 47m
Delta
Wed 4/225:00 am
OPO
- PHL
2 stops22h 12m
Delta
Deal found 3/8![Delta logo]()
$567
This British Airways deal was found by Cheapflights users on 3/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/126:40 pm
PHL
- OPO
1 stop20h 55m
Multiple Airlines
Tue 4/288:40 pm
OPO
- PHL
1 stop26h 00m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$572
This Booking.com deal was found by Cheapflights users on 3/6. 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.
Sun 4/126:40 pm
PHL
- OPO
1 stop20h 55m
British Airways
Tue 4/2812:25 pm
OPO
- PHL
2 stops37h 33m
British Airways
Deal found 3/6![British Airways logo]()
$584
This British Airways deal was found by Cheapflights users on 3/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1310:30 am
PHL
- OPO
2 stops16h 10m
Multiple Airlines
Tue 4/288:40 pm
OPO
- PHL
1 stop26h 00m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$583
This Orbitz deal was found by Cheapflights users on 3/9. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1310:05 pm
PHL
- OPO
2 stops32h 40m
Iberia
Mon 4/208:40 pm
OPO
- PHL
2 stops49h 07m
Iberia
Deal found 3/9![Iberia logo]()
$591
This KAYAK deal was found by Cheapflights users on 3/7. 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.
Mon 4/136:29 pm
PHL
- OPO
2 stops22h 31m
Scandinavian Airlines
Tue 4/285:00 am
OPO
- PHL
2 stops20h 53m
Scandinavian Airlines
Deal found 3/7![Scandinavian Airlines logo]()
$611
This Delta deal was found by Cheapflights users on 3/6. 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.
Tue 4/146:58 pm
PHL
- OPO
2 stops15h 32m
Delta
Fri 4/245:55 am
OPO
- PHL
2 stops21h 55m
Delta
Deal found 3/6![Delta logo]()
$574
This Delta deal was found by Cheapflights users on 3/7. 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.
Sun 4/196:00 am
PHL
- OPO
2 stops28h 25m
Delta
Tue 4/285:00 am
OPO
- PHL
2 stops23h 58m
Delta
Deal found 3/7![Delta logo]()
$562
This British Airways deal was found by Cheapflights users on 3/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:40 pm
PHL
- OPO
1 stop20h 55m
British Airways
Tue 4/288:55 pm
OPO
- PHL
1 stop24h 40m
British Airways
Deal found 3/7![British Airways logo]()
$605
This Trip.com deal was found by Cheapflights users on 3/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/228:15 pm
PHL
- OPO
1 stop30h 25m
Iberia
Tue 4/288:40 pm
OPO
- PHL
1 stop26h 00m
Iberia
Deal found 3/8![Iberia logo]()
$606
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 March 10, 2026.
Search for one-way flight options from Philadelphia to Porto. Find affordable one-way fares based on user searches. Data last updated March 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:00 am
PHL
- OPO
3 stops47h 25m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$340
This Kiwi.com deal was found by Cheapflights users on 3/7. 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.
Tue 5/192:00 pm
PHL
- OPO
3 stops38h 30m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$380
This Kiwi.com deal was found by Cheapflights users on 3/7. 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.
Wed 4/155:05 am
PHL
- OPO
3 stops44h 50m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$396
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/105:35 am
PHL
- OPO
3 stops46h 55m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$403
This Kiwi.com deal was found by Cheapflights users on 3/7. 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.
Wed 4/12:09 pm
PHL
- OPO
3 stops28h 41m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$506
This Lufthansa deal was found by Cheapflights users on 3/9. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:40 pm
PHL
- OPO
1 stop12h 35m
Lufthansa
Deal found 3/9![Lufthansa logo]()
$539
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 March 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $562 (Delta) |
One-way from | $340 (Kiwi.com) |
Popular in | February |
Cheapest in | January |
Average price | $627 |
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 March 10, 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 - OPO
PHLOPO
Philadelphia
Sun 4/12
6:55 pm-6:10 pm
2 stops18h 15m
Porto
Tue 4/28
5:00 am-10:50 pm
2 stops22h 50m
$567
PhiladelphiaPorto
PHL - OPO
PHLOPO
Philadelphia
Wed 4/8
5:33 pm-6:20 pm
2 stops19h 47m
Porto
Wed 4/22
5:00 am-10:12 pm
2 stops22h 12m
$567
PhiladelphiaPorto
PHL - OPO
PHLOPO
Philadelphia
Wed 3/18
12:26 pm-10:30 am
2 stops18h 04m
Porto
Tue 3/24
11:25 am-11:00 pm
2 stops15h 35m
$569
PhiladelphiaPorto
PHL - OPO
PHLOPO
Philadelphia
Sun 4/12
6:40 pm-8:35 pm
1 stop20h 55m
Porto
Tue 4/28
8:40 pm-5:40 pm
1 stop26h 00m
$572
PhiladelphiaPorto
PHL - OPO
PHLOPO
Philadelphia
Mon 5/4
6:00 am-3:25 pm
2 stops28h 25m
Porto
Tue 5/12
11:30 am-10:09 pm
2 stops39h 39m
$592
Quickest round-trip
PhiladelphiaPorto
PHL - OPO
PHLOPO
Philadelphia
Tue 4/28
1:58 pm-10:55 am
2 stops15h 57m
Porto
Sun 5/3
11:45 am-10:12 pm
2 stops15h 27m
$617
PhiladelphiaPorto
PHL - OPO
PHLOPO
Philadelphia
Tue 4/7
10:30 am-7:40 am
2 stops16h 10m
Porto
Tue 4/14
8:40 pm-5:40 pm
1 stop26h 00m
$633
PhiladelphiaPorto
PHL - OPO
PHLOPO
Philadelphia
Sun 4/19
7:38 pm-6:10 pm
2 stops17h 32m
Porto
Thu 4/30
11:25 am-12:59 am
2 stops18h 34m
$697
PhiladelphiaPorto
PHL - OPO
PHLOPO
Philadelphia
Tue 5/5
6:29 pm-10:05 pm
2 stops22h 36m
Porto
Sun 5/10
5:00 am-5:47 pm
2 stops17h 47m
$712
PhiladelphiaPorto
PHL - OPO
PHLOPO
Philadelphia
Sat 5/2
3:00 pm-3:25 pm
2 stops19h 25m
Porto
Tue 5/12
5:00 am-11:07 pm
2 stops23h 07m
$772
Showing 1-10 of 22 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 March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Porto flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.
Cheapflights Insights
Everything you need to know about your flight from Philadelphia 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 March 10, 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.
Comfort
7.3
Entertainment
7.1
Food
6.6
Boarding
7.7
Crew
8.1
Overall
7.4
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Comfort
7.3
Entertainment
7.1
Food
6.6
Boarding
7.7
Crew
8.1
Overall
7.4
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Comfort
7.3
Entertainment
7.1
Food
6.6
Boarding
7.7
Crew
8.1
Overall
7.4
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Comfort
7.3
Entertainment
7.1
Food
6.6
Boarding
7.7
Crew
8.1
Overall
7.4
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Comfort
7.3
Entertainment
7.1
Food
6.6
Boarding
7.7
Crew
8.1
Overall
7.4
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
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
Aveiro
Arcos de Valdevez
Coimbra
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Philadelphia and Porto flights
Browse other Philadelphia and Porto flight options. Last updated on March 10, 2026.
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Top 4 airlines flying from Philadelphia to Porto
Discover the top 4 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 March 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$489 | Average$795 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$546 | Average$855 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$567 | Average$870 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$568 | Average$934 | FlexibilityNo cancel fee | On-time76% |