What are the cheapest airlines to fly from USA to Porto one-way?

The cheapest airlines for a one-way flight from USA to Porto are TAP AIR PORTUGAL ($244), Azores Airlines ($292), and Iberia ($296).

What is the cheapest month to book a flight from USA to Porto?

Currently, January is the cheapest month in which you can book a flight from USA to Porto (average of $523). Flying from USA to Porto in June is currently the most expensive (average of $1,033). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

What are the most popular routes from USA to Porto?

When deciding which route to take from USA to Porto consider Newark - Porto, New York John F Kennedy Intl - Porto or New York LaGuardia - Porto as they are the most popular.

What are the most popular airlines that fly from USA to Porto?

Consider LEVEL, American Airlines or Air Canada when booking your flight. These represent the most popular airlines when flying from USA to Porto.

How far in advance should I book a flight from USA to Porto?

Users have found that booking a flight from USA to Porto at least 40 days early can save you up to 81% on average compared to booking a flight this week. If booking 40 days before your flight isn’t an option for you, users have found flights from USA to Porto for as little as $910 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $1,005 for flights departing within the next 3 days.

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

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, November can be a great choice for travel to Porto. Flights to Porto from USA in November are about $785 on average during November, but can be found for as low as $295.

What is the cheapest time of day to fly from US to OPO?

When flying from USA to Porto, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to Porto from United States?

Porto (OPO) is the airport you will fly into if you book a flight from United States to Porto. It is only a 6.8 mi journey from Porto (OPO) to Porto’s city center.

Can I find deals for flights from USA to Porto that include hotel bookings?

Yes. In addition to deals on USA to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from USA to Porto?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from USA to Porto.

Can I find deals for business class flights from USA to Porto?

Yes. Cheapflights offers flight deals from USA to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$177+ Flights from the United States to Porto

Round-trip from	$458 (SWISS)
One-way from	$177 (CheapOair)
Popular in	July
Cheapest in	November
Average price	$1,064
Good round-trip deal	$514 or less
Good one-way deal	$337 or less

TAP AIR PORTUGAL

TAP's A330NEO offers 2-4-2 seating for more space and comfort on long-haul flights.

TAP's business class provides lie-flat seats and a nice wine list on long-haul flights.

Read more about TAP AIR PORTUGALby Gabriel Leigh

United Airlines

United Polaris offers lie-flat seats and Saks Fifth Avenue bedding on long-haul routes.

United Premium Plus includes extra legroom and upgraded meals on international flights.

Read more about United Airlinesby Harriet Baskas

Delta

Delta One offers 180-degree flat-bed seats with duvets and lumbar pillows on long-haul routes.

Delta Comfort Plus provides extra legroom and upgraded snacks, ideal for international flights.

KLM

KLM's Economy Comfort offers 4 extra inches of legroom, enhancing comfort on long-haul flights.

KLM's Premium Economy provides extra width and legroom in a mini-cabin for added comfort.

Iberia

Iberia's Premium Economy offers 37 inches of legroom and noise-canceling headphones on long-haul flights.

Iberia Business Class features lay-flat beds and adjustable pillows for comfort on long-haul flights.

Azores Airlines

Azores Airlines' Comfort Plus includes 2 oversize checked bags and lounge access.

Azores Airlines offers a stopover option in the Azores for up to 7 days.

Read more about Azores Airlinesby Evie Carrick

Airline	Cheapest	Average	Flexibility	On-time
Scandinavian Airlines	Cheapest$269	Average$626	FlexibilityNo cancel fee	On-time77%
Azores Airlines	Cheapest$293	Average$660	FlexibilityNo cancel fee	On-time74%
SWISS	Cheapest$338	Average$759	FlexibilityNo cancel fee	On-time79%
Iberia	Cheapest$389	Average$848	FlexibilityNo cancel fee	On-time77%
LEVEL	Cheapest$402	Average$609	FlexibilityNo cancel fee	On-timeN/A
British Airways	Cheapest$425	Average$796	FlexibilityNo cancel fee	On-time70%
KLM	Cheapest$425	Average$903	FlexibilityNo cancel fee	On-time75%
Delta	Cheapest$435	Average$1,002	FlexibilityNo cancel fee	On-timeN/A
TAP AIR PORTUGAL	Cheapest$456	Average$821	FlexibilityNo cancel fee	On-timeN/A
Air Europa	Cheapest$464	Average$705	FlexibilityNo cancel fee	On-time83%

$177+ Cheap flights from the United States 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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from USA to Porto

Keep the following information in mind while searching for USA to Porto flight deals. Data was last updated julio 31, 2025.

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Cheapest flights from USA to PortoExplore the most affordable flight options available from USA to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.

Explore the most affordable flight options available from USA to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.

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The best insider tips for theUnited States to Porto flights

Cheapflights partnered with top experts to bring you the best recommendations for your theUnited States to Porto trip

Airlines

TAP AIR PORTUGAL

United Airlines

Delta

KLM

Iberia

Azores Airlines

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Best time to book a flight from USA to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from USA with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from the United States to Porto

What is the cheapest month to book a flight from USA to Porto?

What is the cheapest time of day to fly from US to OPO?

Find hourly flight availability from USA to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 31, 2025.

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 julio 31, 2025.

Read through reviews of airlines operating flights from the United States to Porto, such as Delta, KLM, and Air Transat. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from USA to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Porto from United States?

What are the cheapest airlines to fly from USA to Porto one-way?

What are the most popular routes from USA to Porto?

Can I find deals for flights from USA to Porto that include hotel bookings?

How can I find direct flights from USA to Porto?

Can I find deals for business class flights from USA to Porto?

What is the cheapest month to book a flight from USA to Porto?

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Cheapest flights from USA to Porto
Explore the most affordable flight options available from USA to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.