Which airlines fly from the USA to Porto?

TAP Air Portugal, United, Delta, American Airlines, Iberia, Air France, and Lufthansa offer flights to Porto with either nonstop or 1-stop connections.

How long is the flight from the USA to Porto?

Nonstop flights from the USA to Porto are limited, but 1-stop flights typically take 11–18 hours depending on the airline and layover city.

What is the cheapest month to fly from the USA to Porto?

January, February, early March, and November often have the lowest fares for flights to Porto from the USA.

Cheap Flights from USA to Porto (OPO)

✈️ How to Read Your Flight Results (30-second guide)

🕒 Times & dates: Departure and arrival are shown in each city’s local time. On longer trips you may arrive the next day, so always double-check the arrival date on the booking page.
🧭Total trip vs layovers: The big duration is the total travel time. The small timeline under it shows each flight and the layover gaps between them.
🏷️ Airlines & symbols: Logos show which airline is operating the flight. Extra icons can mean baggage rules or special conditions—click through to the booking site if a symbol isn’t clear.
🛄 Visa / baggage notes: Messages like “visa required” or bag icons are hints only. Always confirm visa rules and baggage details on the final booking page before you pay.
🔍 Sorting & filters (when available): If you tap More above the results, you may see extra tools like sorting by price, total trip time, or departure time and other filters. Use these to reorder or narrow the list based on what matters most to you. If there is no “More” button, those options aren’t available for that search.

USA to Porto — Complete Guide to Finding Cheap Flights

Porto is one of Portugal’s most charming and scenic destinations, famous for its terraced hillsides, colorful riverside homes, medieval bridges, and the iconic Port wine cellars of Vila Nova de Gaia. As Portugal’s second-largest city, Porto offers a quieter, more intimate atmosphere compared to Lisbon — making it increasingly popular among American travelers. FlyToDash AI compares airfares instantly across all major airlines, helping you find the cheapest and fastest routes to Porto Airport (OPO).

✔ Best Airlines from USA to Porto

TAP Air Portugal — most nonstop and 1-stop options.
United Airlines — great connections via Newark & Washington DC.
Delta Air Lines — seasonal options via JFK.
American Airlines — connections via Philadelphia & Charlotte.
Iberia — 1-stop options via Madrid.
Air France — 1-stop via Paris.
Lufthansa — 1-stop via Frankfurt or Munich.

✔ Typical Prices for USA → Porto Flights

East Coast → OPO: $380–$750 round trip
Midwest → OPO: $450–$850 round trip
West Coast → OPO: $550–$1,000 round trip

TAP Air Portugal often offers the cheapest fares to Porto, especially during off-season months.

✔ Cheapest Months to Fly

January
February
March
November

Porto becomes more expensive between:

June – August (peak summer)
Easter holiday weeks
Christmas & New Year

✔ Flight Duration

Nonstop flights: Available only seasonally from select cities.
1-stop flights: 11–18 hours depending on airline and layover.

✔ Top Attractions in Porto

Dom Luís I Bridge — iconic double-decked bridge.
Ribeira District — colorful medieval riverside quarter.
Livraria Lello — world-famous bookstore (Harry Potter inspiration).
Port Wine Cellars — tastings + tours in Vila Nova de Gaia.
Clérigos Tower — amazing city views.
Douro Valley — stunning wine-country day trips.

✔ Tips for Finding the Cheapest Flights

Use FlyToDash AI’s flexible date search.
Fly mid-week to save up to 20–30%.
Check fares from multiple US airports.
Book 6–10 weeks in advance for best pricing.
Watch TAP Air Portugal for seasonal flash sales.

Cheap Flights from USA to Porto