Porto

$186+ 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — OPO
Jan 22 — Jan 291
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Cheap flight deals from USA to Porto

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 December 23, 2025.

This KAYAK deal was found by Cheapflights users on 12/21. 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.
Wed 12/3110:30 pmIAD - OPO
1 stop15h 30mTAP AIR PORTUGAL
Tue 1/136:00 pmOPO - IAD
1 stop32h 00mTAP AIR PORTUGAL
Deal found 12/21$602
This KAYAK deal was found by Cheapflights users on 12/21. 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.
Wed 12/3110:30 pmIAD - OPO
1 stop15h 30mTAP AIR PORTUGAL
Mon 1/125:55 pmOPO - IAD
1 stop25h 40mTAP AIR PORTUGAL
Deal found 12/21$629
This KAYAK deal was found by Cheapflights users on 12/21. 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.
Tue 12/3012:50 pmJFK - OPO
1 stop16h 05mTurkish Airlines
Tue 1/134:10 pmOPO - JFK
1 stop23h 55mTurkish Airlines
Deal found 12/21$640
This oojo deal was found by Cheapflights users on 12/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3011:55 pmEWR - OPO
1 stop10h 05mTAP AIR PORTUGAL
Tue 1/1312:00 pmOPO - EWR
1 stop15h 10mTAP AIR PORTUGAL
Deal found 12/22$650
This Delta deal was found by Cheapflights users on 12/21. 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 12/319:40 pmIAD - OPO
1 stop31h 45mDelta
Tue 1/1311:15 amOPO - IAD
2 stops34h 31mDelta
Deal found 12/21$687
This Delta deal was found by Cheapflights users on 12/21. 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 12/3110:10 amDCA - OPO
2 stops19h 20mDelta
Tue 1/1311:15 amOPO - DCA
2 stops34h 49mDelta
Deal found 12/21$690
This KAYAK deal was found by Cheapflights users on 12/21. 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.
Wed 12/316:20 pmIAD - OPO
2 stops19h 15mSWISS
Mon 1/129:10 amOPO - IAD
2 stops36h 30mSWISS
Deal found 12/21$721
This British Airways deal was found by Cheapflights users on 12/21. 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.
Wed 12/318:35 pmBWI - OPO
1 stop15h 10mBritish Airways
Mon 1/125:30 pmOPO - BWI
1 stop30h 15mBritish Airways
Deal found 12/21$728
This KLM deal was found by Cheapflights users on 12/21. 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 12/305:20 pmORD - OPO
1 stop11h 10mKLM
Mon 1/1211:25 amOPO - ORD
1 stop33h 45mKLM
Deal found 12/21$744
This oojo deal was found by Cheapflights users on 12/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:00 pmJFK - OPO
1 stop15h 55mTAP AIR PORTUGAL
Tue 1/138:00 pmOPO - JFK
1 stop29h 05mTAP AIR PORTUGAL
Deal found 12/22$767
This Delta deal was found by Cheapflights users on 12/21. 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 12/319:40 pmIAD - OPO
1 stop31h 45mDelta
Sat 1/1011:15 amOPO - IAD
1 stop33h 50mDelta
Deal found 12/21$772
This Expedia deal was found by Cheapflights users on 12/21. 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.
Tue 12/305:40 pmORD - OPO
1 stop16h 20mIberia
Mon 1/128:40 pmOPO - ORD
2 stops24h 57mIberia
Deal found 12/21$772

Find flight deals from USA to Porto

Keep the following information in mind while searching for USA to Porto flight deals. Data was last updated December 23, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$379
(FlightHub)

One-way from

$186
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,489

Good round-trip deal

$552 or less

Good one-way deal

$241 or less
Provider with most accurate pricing for New York (NYC)-Porto flight deals.
Provider most trusted by Cheapflights users for New York (NYC)-Porto flights.
From USA to Porto
One-way flight from USA to Porto
Highest demand for flights based on searches. 13% potential increase in price ($128 potential increase over avg. RT price).
Cheapest flight prices on average. 7% potential price decrease ($59 potential savings vs. average RT price).
Average for round-trip flights in December 2025
Price to beat on a round-trip flight from USA to Porto.
Price to beat on a one-way flight from USA to Porto.

Cheapflights Fare Finder

 
Customize your flight search to find flights from USA 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 December 23, 2025.
Use the filters below to find and compare flights from the United States to Porto that are best for you.

Fly from

USA

Fly to

Porto

Route

Depart

Return

Price

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 1/25

10:45 pm-7:00 pm

1 stop15h 15m

Porto

Wed 2/4

8:00 pm-2:35 pm

1 stop23h 35m

$379

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 1/25

10:45 pm-1:00 pm

1 stop9h 15m

Porto

Fri 2/6

9:00 am-8:10 pm

1 stop16h 10m

$379

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Thu 2/5

6:05 pm-9:55 am

1 stop10h 50m

Porto

Wed 2/11

6:00 pm-2:35 pm

1 stop25h 35m

$383

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 1/27

9:50 pm-11:15 am

1 stop32h 25m

Porto

Wed 2/4

12:10 pm-8:20 pm

1 stop13h 10m

$384

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 1/27

9:50 pm-11:15 am

1 stop32h 25m

Porto

Fri 2/6

12:50 pm-8:00 pm

1 stop12h 10m

$384

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 1/27

9:50 pm-11:15 am

1 stop32h 25m

Porto

Thu 2/5

12:05 pm-8:00 pm

1 stop12h 55m

$384

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 1/26

10:10 pm-11:15 am

1 stop32h 05m

Porto

Wed 2/4

12:10 pm-8:20 pm

1 stop13h 10m

$384

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 3/10

10:50 pm-11:15 am

1 stop32h 25m

Porto

Thu 3/19

11:25 am-9:20 pm

1 stop13h 55m

$384

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 1/27

2:20 pm-12:50 pm

2 stops17h 30m

Porto

Wed 2/4

12:10 pm-8:20 pm

1 stop13h 10m

$393

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 1/27

2:20 pm-12:50 pm

2 stops17h 30m

Porto

Fri 2/6

12:50 pm-8:00 pm

1 stop12h 10m

$393

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/23

Showing 1-10 of 60 results
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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.
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 the United States to Porto

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

Currently, October is the cheapest month in which you can book a flight from USA to Porto (average of $369). Flying from USA to Porto in June is currently the most expensive (average of $555). 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.

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 December 23, 2025.

It’s optimal to fly from USA to Porto in the morning. By choosing this option you can save up to 6% on the cost of your flight, compared to a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from USA to Porto. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their USA to Porto flight should consider departing on Monday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How often are flights from the United States to Porto delayed?

About 26% of weekly flights between United States and Porto have experienced delays in the past year, with the average delay time being 163 minutes.

What is the most punctual flight time for the United States to Porto flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on the United States to Porto flights?

Over the last year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 21% of flights being delayed.

The best insider tips for theUnited States to Porto flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your theUnited States to Porto trip
Airlines
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.

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.

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.

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.

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.

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.

Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on TAP AIR PORTUGAL and KLM

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines and Delta

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Emily Zemler

Emily Zemler

Expert on Iberia

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more
Evie Carrick

Evie Carrick

Expert on Azores Airlines

Evie Carrick

Evie Carrick

Evie Carrick is a writer and editor who has lived in five countries and traveled to over 50, with extensive experience flying around the world. She was born in Colorado, but has spent time flying to both coasts to visit family. She writes regularly for Travel + Leisure, BuzzFeed, and SKI and recently published seven travel journals with Simon & Schuster.

Read more

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 December 23, 2025.
Read through reviews of airlines operating flights from the United States to Porto, such as Delta, United Airlines, and TAP AIR PORTUGAL. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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?

    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.

  • How long is the flight from USA to Porto?

    For as low as $478, TAP AIR PORTUGAL can have you in Porto from USA in 12h 50m. Airlines will cover a distance of 5083 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 United Airlines ($158), TAP AIR PORTUGAL ($222), and Azores Airlines ($227).

  • What are the most popular routes from USA to Porto?

  • 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.

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

    Currently, October is the cheapest month in which you can book a flight from USA to Porto (average of $369). Flying from USA to Porto in June is currently the most expensive (average of $555). 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.

See more FAQs

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Aveiro
Arcos de Valdevez
Coimbra
Vila Nova de Gaia

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for USA to Porto

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from USA to Porto

Discover the top 10 airlines that operate flights from USA 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$269Average$636FlexibilityNo cancel feeOn-time77%
SWISSCheapest$338Average$773FlexibilityNo cancel feeOn-time79%
IberiaCheapest$373Average$829FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$374Average$796FlexibilityNo cancel feeOn-time70%
LEVELCheapest$388Average$688FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$394Average$775FlexibilityNo cancel feeOn-time75%
Air EuropaCheapest$401Average$702FlexibilityNo cancel feeOn-time83%
United AirlinesCheapest$406Average$966FlexibilityNo cancel feeOn-time69%
DeltaCheapest$426Average$988FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$434Average$845FlexibilityNo cancel feeOn-time67%

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