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$201+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — OPO
Mar 7 — Mar 141
Sat 3/7
Sat 3/14
1 adult, Economy
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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 February 5, 2026.

This oojo deal was found by Cheapflights users on 2/3. 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.
Sun 3/2910:45 pm
BOS
-
OPO
1 stop11h 45m
TAP AIR PORTUGAL
Mon 4/610:35 pm
OPO
-
BOS
1 stop21h 05m
TAP AIR PORTUGAL
Deal found 2/3$364
This oojo deal was found by Cheapflights users on 2/2. 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.
Sun 3/2910:45 pm
BOS
-
OPO
1 stop19h 15m
TAP AIR PORTUGAL
Fri 4/105:05 am
OPO
-
BOS
1 stop14h 35m
TAP AIR PORTUGAL
Deal found 2/2$365
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/188:40 pm
BOS
-
OPO
1 stop11h 35m
Lufthansa
Wed 3/46:00 am
OPO
-
BOS
2 stops17h 35m
Lufthansa
Deal found 2/2$366
This United Airlines deal was found by Cheapflights users on 2/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/237:19 pm
BOS
-
OPO
2 stops33h 11m
United Airlines
Thu 3/1212:35 pm
OPO
-
BOS
2 stops15h 22m
United Airlines
Deal found 2/5$367
This Gotogate deal was found by Cheapflights users on 2/2. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/45:30 am
BOS
-
OPO
2 stops32h 00m
Multiple Airlines
Thu 11/1212:05 pm
OPO
-
BOS
1 stop13h 15m
Multiple Airlines
Deal found 2/2$368
This FlightHub deal was found by Cheapflights users on 2/4. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/213:35 pm
BOS
-
OPO
1 stop10h 25m
Multiple Airlines
Tue 11/37:20 pm
OPO
-
BOS
1 stop30h 00m
Multiple Airlines
Deal found 2/4$369
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/189:50 pm
BOS
-
OPO
1 stop32h 20m
SWISS
Tue 2/247:25 pm
OPO
-
BOS
1 stop29h 55m
SWISS
Deal found 2/3$370
This Trip.com deal was found by Cheapflights users on 2/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3010:45 pm
BOS
-
OPO
1 stop15h 15m
TAP AIR PORTUGAL
Mon 4/610:35 pm
OPO
-
BOS
1 stop21h 05m
TAP AIR PORTUGAL
Deal found 2/3$372
This Mytrip deal was found by Cheapflights users on 2/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/184:35 pm
BOS
-
OPO
2 stops21h 00m
Multiple Airlines
Tue 2/247:25 pm
OPO
-
BOS
2 stops43h 07m
Multiple Airlines
Deal found 2/3$373
This eDestinos deal was found by Cheapflights users on 2/2. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/411:34 am
BOS
-
OPO
2 stops15h 06m
Iberia
Wed 3/1112:25 pm
OPO
-
BOS
1 stop12h 25m
Iberia
Deal found 2/2$374
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/249:50 pm
BOS
-
OPO
1 stop15h 40m
SWISS
Mon 3/99:10 am
OPO
-
BOS
2 stops40h 10m
SWISS
Deal found 2/3$375
This oojo deal was found by Cheapflights users on 2/2. 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 5/510:05 pm
JFK
-
OPO
1 stop16h 15m
Air Europa
Sun 5/1011:35 am
OPO
-
JFK
1 stop11h 10m
Air Europa
Deal found 2/2$424

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 February 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$364
(oojo)

One-way from

$201
(Mytrip)

Popular in

December

Cheapest in

February

Average price

$600

Good round-trip deal

$546 or less

Good one-way deal

$277 or less
Provider with most accurate pricing for New York (NYC)-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York (NYC)-Porto flights.
Search Deals
From USA to Porto
Search Deals
One-way flight from USA to Porto
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from USA to Porto.
Search Deals
Price to beat on a one-way flight from USA to Porto.
Search Deals

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 February 5, 2026.
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

Tue 3/3

4:45 pm-11:45 am

1 stop14h 00m

Porto

Tue 3/10

8:20 am-8:50 pm

1 stop16h 30m

$380

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 2/25

2:20 pm-9:30 am

2 stops14h 10m

Porto

Wed 3/11

12:35 pm-9:41 pm

1 stop13h 06m

$381

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 3/2

9:30 am-9:30 am

2 stops19h 00m

Porto

Thu 3/12

12:35 pm-9:41 pm

1 stop13h 06m

$381

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 2/23

9:45 am-9:30 am

2 stops18h 45m

Porto

Fri 3/6

12:45 pm-11:57 pm

2 stops16h 12m

$381

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 3/1

7:45 am-9:30 am

2 stops20h 45m

Porto

Wed 3/11

12:35 pm-11:57 pm

2 stops15h 22m

$381

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 2/23

12:35 pm-9:30 am

2 stops15h 55m

Porto

Wed 3/11

12:35 pm-8:15 pm

1 stop11h 40m

$381

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 3/4

9:40 am-9:30 am

2 stops18h 50m

Porto

Tue 3/10

12:35 pm-9:56 am

2 stops25h 21m

$381

New YorkPorto

LGA - OPO

LGAOPO

New York LaGuardia

Wed 3/4

3:20 pm-9:50 am

2 stops13h 30m

Porto

Tue 3/10

7:35 am-9:33 pm

2 stops17h 58m

$462

NewarkPorto

EWR - OPO

EWROPO

Newark

Thu 4/16

5:45 pm-5:05 pm

2 stops18h 20m

Porto

Wed 5/6

11:50 am-1:15 pm

2 stops30h 25m

$462

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 3/9

8:10 pm-6:35 pm

1 stop15h 25m

Porto

Mon 3/23

7:20 pm-5:35 pm

1 stop29h 15m

$467

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

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, February is the cheapest month in which you can book a flight from USA to Porto (average of $356). Flying from USA to Porto in June is currently the most expensive (average of $568). 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 February 5, 2026.

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.

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 166 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 22% 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
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on TAP AIR PORTUGAL and KLM

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 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 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 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 February 5, 2026.
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.
Delta
7.9
Good
8,154 reviews

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

Boarding

8.1

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.
Delta
7.9
Good
8,154 reviews
Delta
7.9
Good
8,154 reviews

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

Boarding

8.1

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.
United Airlines
7.4
Good
9,241 reviews
Delta
7.9
Good
8,154 reviews

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

Boarding

8.1

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.
TAP AIR PORTUGAL
7.1
Good
2,135 reviews
Delta
7.9
Good
8,154 reviews

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

Boarding

8.1

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.
Iberia
7.0
Good
3,104 reviews
Delta
7.9
Good
8,154 reviews

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

Boarding

8.1

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.
Lufthansa
6.8
Okay
7,762 reviews
Delta
7.9
Good
8,154 reviews

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.9

Boarding

8.1

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 $380, Iberia can have you in Porto from USA in 14h. Airlines will cover a distance of 3134 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 Iberia ($130), United Airlines ($158), and Lufthansa ($176).

  • 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 Boston Logan Intl - Porto as they are the most popular.

  • 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, February is the cheapest month in which you can book a flight from USA to Porto (average of $356). Flying from USA to Porto in June is currently the most expensive (average of $568). 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
Vila Nova de Gaia
Aveiro
Arcos de Valdevez
Coimbra

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.
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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 February 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$263Average$673FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$269Average$558FlexibilityNo cancel feeOn-time77%
SWISSCheapest$338Average$777FlexibilityNo cancel feeOn-time79%
KLMCheapest$366Average$815FlexibilityNo cancel feeOn-time75%
IberiaCheapest$373Average$797FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$374Average$782FlexibilityNo cancel feeOn-time70%
Air TransatCheapest$382Average$790FlexibilityNo cancel feeOn-time50%
Air EuropaCheapest$392Average$674FlexibilityNo cancel feeOn-time83%
American AirlinesCheapest$395Average$924FlexibilityNo cancel feeOn-time71%
DeltaCheapest$396Average$957FlexibilityNo cancel feeOn-timeN/A

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