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$273+ 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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — OPO
Jun 16 — Jun 231
Tue 6/16
Tue 6/23
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 May 17, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 5/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/39:45 pm
MIA
-
OPO
1 stop16h 35m
Air Europa
Tue 11/107:35 am
OPO
-
MIA
1 stop16h 55m
Air Europa
Deal found 5/15$600
This Cheapflightsfares deal was found by Cheapflights users on 5/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/49:45 pm
MIA
-
OPO
1 stop12h 30m
Air Europa
Wed 11/117:35 am
OPO
-
MIA
1 stop16h 55m
Air Europa
Deal found 5/13$601
This LEVEL deal was found by Cheapflights users on 5/14. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/119:45 pm
MIA
-
OPO
1 stop30h 50m
LEVEL
Wed 11/188:45 am
OPO
-
MIA
1 stop16h 15m
LEVEL
Deal found 5/14$606
This FlightHub deal was found by Cheapflights users on 5/16. 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.
Tue 11/105:35 pm
JFK
-
OPO
1 stop12h 30m
Scandinavian Airlines
Fri 11/135:45 pm
OPO
-
JFK
1 stop27h 00m
Scandinavian Airlines
Deal found 5/16$608
This Cheapflightsfares deal was found by Cheapflights users on 5/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/510:05 pm
JFK
-
OPO
1 stop12h 10m
Air Europa
Sat 12/127:35 am
OPO
-
JFK
1 stop15h 15m
Air Europa
Deal found 5/13$610
This Kiwi.com deal was found by Cheapflights users on 5/16. 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.
Sat 9/1912:30 am
JFK
-
OPO
1 stop27h 10m
Multiple Airlines
Fri 10/97:10 am
OPO
-
JFK
1 stop20h 20m
Multiple Airlines
Deal found 5/16$613
This LEVEL deal was found by Cheapflights users on 5/13. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1511:50 pm
JFK
-
OPO
1 stop32h 15m
LEVEL
Tue 10/279:55 pm
OPO
-
JFK
1 stop29h 05m
LEVEL
Deal found 5/13$614
This KAYAK deal was found by Cheapflights users on 5/15. 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.
Mon 11/27:55 pm
MIA
-
OPO
1 stop34h 10m
Scandinavian Airlines
Sun 11/155:35 pm
OPO
-
MIA
1 stop29h 30m
Scandinavian Airlines
Deal found 5/15$615
This eDestinos deal was found by Cheapflights users on 5/17. 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 10/149:30 pm
MIA
-
OPO
1 stop12h 45m
Air Europa
Sat 10/2411:35 am
OPO
-
MIA
1 stop12h 10m
Air Europa
Deal found 5/17$617
This Trip.com deal was found by Cheapflights users on 5/16. 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.
Sat 10/246:55 pm
JFK
-
OPO
1 stop17h 50m
Scandinavian Airlines
Sun 11/15:35 pm
OPO
-
JFK
1 stop27h 10m
Scandinavian Airlines
Deal found 5/16$618
This oojo deal was found by Cheapflights users on 5/15. 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.
Wed 10/219:30 pm
MIA
-
OPO
1 stop12h 45m
Air Europa
Wed 10/288:10 pm
OPO
-
MIA
1 stop28h 20m
Air Europa
Deal found 5/15$618
This Justfly.com deal was found by Cheapflights users on 5/14. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/125:35 pm
JFK
-
OPO
1 stop18h 20m
Scandinavian Airlines
Sun 11/155:35 pm
OPO
-
JFK
1 stop27h 10m
Scandinavian Airlines
Deal found 5/14$622

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 May 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$600
(Cheapflightsfares)

One-way from

$273
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$861

Good round-trip deal

$755 or less

Good one-way deal

$454 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
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 17, 2026.
Use the filters below to find and compare flights from the United States to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

New YorkPorto

JFK - OPO

JFKOPO

New York John F Kennedy Intl

Thu 10/1

11:50 pm-8:00 am

1 stop27h 10m

Porto

Thu 10/15

8:35 am-10:00 pm

1 stop18h 25m

$678

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 11/3

11:15 am-10:30 am

2 stops18h 15m

Porto

Mon 11/9

11:25 am-11:34 pm

2 stops17h 09m

$681

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Fri 10/30

6:00 am-9:30 am

1 stop23h 30m

Porto

Thu 11/5

12:35 pm-9:24 am

2 stops25h 49m

$696

MiamiPorto

MIA - OPO

MIAOPO

Miami

Tue 11/3

8:45 am-9:30 am

3 stops19h 45m

Porto

Tue 11/10

6:00 am-11:11 am

2 stops34h 11m

$728

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Tue 11/3

8:15 am-9:30 am

2 stops20h 15m

Porto

Tue 11/10

12:30 pm-12:38 am

2 stops17h 08m

$742

MiamiPorto

MIA - OPO

MIAOPO

Miami

Sun 11/1

6:20 am-9:30 am

2 stops46h 10m

Porto

Sun 11/8

6:00 am-6:35 pm

3 stops41h 35m

$746

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 8/12

3:35 pm-7:00 am

1 stop10h 25m

Porto

Sun 8/23

12:15 pm-9:27 pm

1 stop14h 12m

$748

MiamiPorto

MIA - OPO

MIAOPO

Miami

Thu 8/6

7:07 am-6:55 am

1 stop18h 48m

Porto

Wed 8/19

2:25 pm-4:31 pm

2 stops31h 06m

$773

MiamiPorto

MIA - OPO

MIAOPO

Miami

Fri 8/21

11:24 am-10:30 am

1 stop18h 06m

Porto

Sun 9/6

9:25 am-5:50 pm

1 stop13h 25m

$783

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 7/5

11:35 pm-9:20 pm

1 stop16h 45m

Porto

Sun 7/19

8:35 am-9:45 pm

1 stop18h 10m

$790

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/12

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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

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

The best time to book flights from USA to Porto is 82 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, March is the cheapest month in which you can book a flight from USA to Porto (average of $616). Flying from USA to Porto in December is currently the most expensive (average of $1,229). 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 May 17, 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 24% of weekly flights between United States and Porto have experienced delays in the past year, with the average delay time being 164 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?

Monday 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 20% 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 May 17, 2026.
Read through reviews of airlines operating flights from the United States to Porto, such as Delta,United Airlines, andTAP AIR PORTUGAL. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,453 reviews

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.9
Good
8,453 reviews
Delta
7.9
Good
8,453 reviews

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
9,730 reviews
Delta
7.9
Good
8,453 reviews

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
TAP AIR PORTUGAL
7.2
Good
2,252 reviews
Delta
7.9
Good
8,453 reviews

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Iberia
7.0
Good
3,218 reviews
Delta
7.9
Good
8,453 reviews

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Lufthansa
6.8
Okay
8,004 reviews
Delta
7.9
Good
8,453 reviews

Overall

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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 $681, LEVEL can have you in Porto from USA in 18h 15m. 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 Air Canada ($179).

  • 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.

  • 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, March is the cheapest month in which you can book a flight from USA to Porto (average of $616). Flying from USA to Porto in December is currently the most expensive (average of $1,229). 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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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 May 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$248Average$814FlexibilityNo cancel feeOn-time79%
LufthansaCheapest$362Average$874FlexibilityNo cancel feeOn-time76%
KLMCheapest$366Average$884FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$369Average$786FlexibilityNo cancel feeOn-time70%
IberiaCheapest$370Average$804FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$378Average$866FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$380Average$871FlexibilityNo cancel feeOn-time69%
Air EuropaCheapest$392Average$707FlexibilityNo cancel feeOn-time83%
DeltaCheapest$394Average$929FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$408Average$759FlexibilityNo cancel feeOn-timeN/A

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