OPO - PHL

$473 Find Cheap Flights from Porto to Philadelphia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Porto to Philadelphia departing on 12/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Philadelphia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Porto to Philadelphia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Porto to Philadelphia, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$740
Multiple Airlines
Thu 12/11Thu 12/18
OPO - PHL • 2 stops
Cheapest one-way
$473
Multiple Airlines
Thu 12/18
OPO - PHL • 3 stops
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Philadelphia!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Porto to Philadelphia (OPO-PHL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Porto to Philadelphia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Porto to Philadelphia

Thu, Dec 11 - Thu, Dec 18
Multiple Airlines Logo
10:20 am - 4:00 pmOPO-PHL
34h 40m2 stops
Multiple Airlines Logo
5:30 pm - 2:50 pmPHL-OPO
16h 20m1 stop
$740Multiple Airlines
Find Deal
Thu, Nov 13 - Tue, Nov 18
Multiple Airlines Logo
6:35 am - 4:45 pmOPO-PHL
15h 10m2 stops
Multiple Airlines Logo
1:25 pm - 10:30 amPHL-OPO
16h 05m2 stops
$782Multiple Airlines
Find Deal
Mon, Dec 15 - Tue, Dec 30
Delta Logo
6:30 am - 9:37 pmOPO-PHL
20h 07m2 stops
Delta Logo
7:05 am - 10:30 amPHL-OPO
22h 25m2 stops
$786Delta
Find Deal
Mon, Dec 15 - Tue, Dec 30
Lufthansa Logo
12:30 pm - 4:05 pmOPO-PHL
32h 35m1 stop
Lufthansa Logo
5:40 pm - 11:40 amPHL-OPO
13h 00m1 stop
$787Lufthansa
Find Deal
Thu, Feb 19 - Mon, Feb 23
United Airlines Logo
6:00 am - 9:48 amOPO-PHL
32h 48m2 stops
United Airlines Logo
12:55 pm - 9:30 amPHL-OPO
15h 35m2 stops
$789United Airlines
Find Deal
Thu, Feb 19 - Mon, Feb 23
United Airlines Logo
6:00 am - 7:04 pmOPO-PHL
18h 04m2 stops
United Airlines Logo
6:32 am - 9:30 amPHL-OPO
21h 58m2 stops
$790United Airlines
Find Deal
Mon, Dec 15 - Tue, Dec 30
United Airlines Logo
12:30 pm - 9:10 pmOPO-PHL
37h 40m2 stops
United Airlines Logo
5:40 pm - 11:40 amPHL-OPO
13h 00m1 stop
$792United Airlines
Find Deal
Thu, Nov 13 - Tue, Nov 18
Lufthansa Logo
6:00 am - 4:05 pmOPO-PHL
15h 05m1 stop
Lufthansa Logo
5:40 pm - 2:45 pmPHL-OPO
16h 05m1 stop
$839Lufthansa
Find Deal
Thu, Feb 19 - Mon, Feb 23
American Airlines Logo
12:25 pm - 3:35 pmOPO-PHL
32h 10m1 stop
American Airlines Logo
6:35 pm - 4:00 pmPHL-OPO
16h 25m2 stops
$953American Airlines
Find Deal
Thu, Feb 19 - Mon, Feb 23
American Airlines Logo
12:25 pm - 3:35 pmOPO-PHL
32h 10m1 stop
American Airlines Logo
6:35 pm - 4:00 pmPHL-OPO
16h 25m2 stops
$955American Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Porto to Philadelphia flights

Get data-powered insights and trends into flights from Porto to Philadelphia to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Porto to Philadelphia?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Porto to Philadelphia were found on Delta ($786) and Lufthansa ($787).

Find deals

Good to know

Cheapest flight$473
Flight from Porto to Philadelphia

When to book flights from Porto to Philadelphia

Are your dates flexible? Find out the best times to travel from Porto to Philadelphia based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Porto to Philadelphia

  • What is the cheapest flight from Porto to Philadelphia?

    In the last 3 days, the lowest price for a flight from Porto to Philadelphia was $473 for a one-way ticket and $740 for a round-trip.

  • Do I need a passport to fly between Porto and Philadelphia?

    Yes

  • Which aircraft models fly most regularly from Porto to Philadelphia?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Porto to Philadelphia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Porto to Philadelphia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Porto to Philadelphia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Philadelphia from Porto is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Porto to Philadelphia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Philadelphia with an airline and back to Porto with another airline. Booking your flights between Porto and PHL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Porto to Philadelphia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Philadelphia from Porto up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Porto to Philadelphia

Information on your arrival and departure airports

Porto (OPO)
Philadelphia (PHL)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.