
Cheap United flights from Newark Liberty Intl. Airport to Porto (EWR to OPO)
Find The Best Day To Fly from Newark Liberty Intl. Airport to Porto
Amazing United EWR to OPO Flight Deals
The cheapest flights to Dr. Francisco de Sa Carneiro found within the past 7 days were $524 round trip and one way. Prices and availability subject to change. Additional terms may apply.
OPO From EWR Economy Coach Packages on Similar Airlines



Frequently asked questions
Discover our best United flight from Newark Liberty Intl. Airport EWR to Porto OPO
To find the best deals on flights to Newark Liberty Intl. Airport from Porto with United, just enter your travel dates, filter by United, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.
Return flights from Newark Liberty Intl. Airport EWR to Porto OPO with United
If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $524 to $524, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply.
Book one-way United flights from Newark Liberty Intl. Airport EWR to Porto OPO
A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from Newark Liberty Intl. Airport to Porto costs from . Prices and availability subject to change. Additional terms may apply.
The easy way to find cheap flights to Porto OPO from Newark Liberty Intl. Airport EWR with United
To find a cheap United flight from Newark Liberty Intl. Airport EWR to Porto OPO, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference.
How to find our best airfare deals on United flights from Newark Liberty Intl. Airport EWR to Porto OPO
If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as February, or if you book a flight with a stopover.
Find nonstop flights from Newark Liberty Intl. Airport EWR to Porto OPO with United
If you’re keen to be on Porto soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it.
Flexible airline tickets for United flights from Newark Liberty Intl. Airport EWR to Porto OPO
Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.
There are a lot of reasons to book your flights to Porto OPO from Newark Liberty Intl. Airport EWR with United on Travelocity
At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.
Airport code | Country | Airport name | Number of flights |
|---|---|---|---|
| ORD | USA | O'Hare Intl. | 227 |
| DEN | USA | Denver Intl. | 226 |
| IAH | USA | George Bush Intercontinental | 136 |
| IAD | USA | Washington Dulles Intl. | 100 |
| SFO | USA | San Francisco Intl. | 64 |
| LAX | USA | Los Angeles Intl. | 23 |
| EWR | USA | Liberty Intl. | 20 |
| FRA | DEU | Frankfurt Intl. | 19 |
| NRT | JPN | Narita Intl. | 19 |
| PEK | CHN | Capital Intl. | 16 |
Travelers ❤️ these 🏨 after their flight to Porto

Stay Hotel Porto Aeroporto
Stayed one night since it was about 10-15 walk to the airport. Good clean hotel. Quiet. All the amenities including a mini balcony to get some fresh air. One thing I couldn’t work was the TV but they have working WiFi so no bother. Breakfast was continental nothing special for the price but cheaper ...
Reviewed on Nov 14, 2025

Holiday Inn Express Porto Boavista by IHG
It's not close to the city center as much as I would like
Reviewed on Nov 18, 2025

The Log Porto Hotel by Piamonte Hotels
Excellent staff! Great amenities! Bartender Matteo was great!
Reviewed on Nov 17, 2025
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