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Cheap flights from Porto to the United States from $294

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Porto to the United States departing on 1/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

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Scandinavian Airlines Logo
5:35 pm - 4:40 pmOPO-EWR
27h 05m1 stop
Scandinavian Airlines Logo
7:30 pm - 9:35 amEWR-OPO
34h 05m2 stops
$400Scandinavian Airlines
Find Deal
Mon, Mar 9 - Mon, Mar 16
Scandinavian Airlines Logo
5:35 pm - 4:40 pmOPO-EWR
27h 05m1 stop
Scandinavian Airlines Logo
7:30 pm - 9:35 amEWR-OPO
34h 05m2 stops
$401Scandinavian Airlines
Find Deal
Mon, Mar 9 - Mon, Mar 16
TAP AIR PORTUGAL Logo
6:35 pm - 10:00 pmOPO-EWR
8h 25mnonstop
TAP AIR PORTUGAL Logo
12:25 am - 12:00 pmEWR-OPO
6h 35mnonstop
$475TAP AIR PORTUGAL
Find Deal
Thu, Feb 12 - Fri, Feb 27
TAP AIR PORTUGAL Logo
6:55 am - 2:35 pmOPO-BOS
12h 40m1 stop
TAP AIR PORTUGAL Logo
10:45 pm - 3:20 pmBOS-OPO
11h 35m1 stop
$482TAP AIR PORTUGAL
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Mon, Feb 9 - Sun, Feb 15
KLM Logo
4:10 pm - 2:50 pmOPO-MIA
27h 40m1 stop
KLM Logo
7:00 pm - 3:25 pmMIA-OPO
15h 25m2 stops
$511KLM
Find Deal
Wed, Jan 28 - Tue, Feb 17
KLM Logo
4:10 pm - 2:50 pmOPO-MIA
27h 40m1 stop
KLM Logo
7:00 pm - 3:25 pmMIA-OPO
15h 25m2 stops
$512KLM
Find Deal
Wed, Jan 28 - Tue, Feb 17
Iberia Logo
8:20 am - 3:25 pmOPO-JFK
12h 05m1 stop
Iberia Logo
11:45 pm - 9:15 pmJFK-OPO
16h 30m1 stop
$516Iberia
Find Deal
Mon, Feb 2 - Mon, Mar 2
United Airlines Logo
6:00 am - 8:35 pmOPO-MIA
19h 35m2 stops
United Airlines Logo
5:05 pm - 9:30 amMIA-OPO
11h 25m1 stop
$521United Airlines
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Sun, Feb 15 - Sat, Feb 21
United Airlines Logo
6:00 am - 7:15 pmOPO-FLL
18h 15m2 stops
United Airlines Logo
3:15 pm - 9:30 amFLL-OPO
13h 15m1 stop
$521United Airlines
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Sat, Nov 15 - Mon, Nov 24
Iberia Logo
12:25 pm - 8:45 pmOPO-MIA
13h 20m1 stop
Iberia Logo
10:30 pm - 4:00 pmMIA-OPO
12h 30m1 stop
$533Iberia
Find Deal
Sat, Feb 14 - Sat, Feb 21

TAP AIR PORTUGAL flights from Porto to United States

Our best TAP AIR PORTUGAL deals on Porto to United States flight tickets
TAP AIR PORTUGAL
Feb 12
OPO6:35 pmPorto
8h 25m
EWR10:00 pmNewark
Feb 27
EWR12:25 amNewark
6h 35m
OPO12:00 pmPorto
$475
Find similar
TAP AIR PORTUGAL
Feb 9
OPO6:55 amPorto
12h 40m
1 stop
BOS2:35 pmBoston Logan Intl
Feb 15
BOS10:45 pmBoston Logan Intl
11h 35m
1 stop
OPO3:20 pmPorto
$482
Find similar
TAP AIR PORTUGAL
Feb 12
OPO6:35 pmPorto
8h 25m
EWR10:00 pmNewark
Feb 19
EWR12:15 amNewark
6h 35m
OPO11:50 amPorto
$483
Find similar

Lufthansa flights from Porto to United States

Our best Lufthansa deals on Porto to United States flight tickets
Lufthansa
Feb 1
OPO1:45 pmPorto
32h 10m
1 stop
MIA4:55 pmMiami
Feb 8
MIA4:40 pmMiami
15h 10m
2 stops
OPO12:50 pmPorto
$497
Find similar
Lufthansa
Nov 21
OPO6:00 amPorto
18h 13m
2 stops
MIA7:13 pmMiami
Dec 4
MIA6:45 pmMiami
13h 05m
1 stop
OPO12:50 pmPorto
$508
Find similar
Lufthansa
Nov 16
OPO6:15 amPorto
15h 40m
1 stop
MIA4:55 pmMiami
Nov 24
MIA12:39 pmMiami
15h 51m
1 stop
OPO9:30 amPorto
$516
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Porto to United States 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, momondo users made 832,500 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from Porto to the United States that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortoNewark

OPO - EWR

OPOEWR

Porto

Mon 3/9

5:35 pm-4:40 pm

1 stop27h 05m

Newark

Mon 3/16

7:30 pm-9:35 am

2 stops34h 05m

$400

PortoNewark

OPO - EWR

OPOEWR

Porto

Mon 3/9

5:35 pm-4:40 pm

1 stop27h 05m

Newark

Mon 3/16

7:30 pm-9:35 am

2 stops34h 05m

$401

PortoNewark

OPO - EWR

OPOEWR

Porto

Thu 2/12

6:35 pm-10:00 pm

Nonstop8h 25m

Newark

Fri 2/27

12:25 am-12:00 pm

Nonstop6h 35m

$475

PortoBoston

OPO - BOS

OPOBOS

Porto

Mon 2/9

6:55 am-2:35 pm

1 stop12h 40m

Boston Logan Intl

Sun 2/15

10:45 pm-3:20 pm

1 stop11h 35m

$482

PortoMiami

OPO - MIA

OPOMIA

Porto

Wed 1/28

4:10 pm-2:50 pm

1 stop27h 40m

Miami

Tue 2/17

7:00 pm-3:25 pm

2 stops15h 25m

$511

PortoMiami

OPO - MIA

OPOMIA

Porto

Wed 1/28

4:10 pm-2:50 pm

1 stop27h 40m

Miami

Tue 2/17

7:00 pm-3:25 pm

2 stops15h 25m

$512

PortoNew York

OPO - JFK

OPOJFK

Porto

Mon 2/2

8:20 am-3:25 pm

1 stop12h 05m

New York John F Kennedy Intl

Mon 3/2

11:45 pm-9:15 pm

1 stop16h 30m

$516

PortoMiami

OPO - MIA

OPOMIA

Porto

Sun 2/15

6:00 am-8:35 pm

2 stops19h 35m

Miami

Sat 2/21

5:05 pm-9:30 am

1 stop11h 25m

$521

PortoFort Lauderdale

OPO - FLL

OPOFLL

Porto

Sat 11/15

6:00 am-7:15 pm

2 stops18h 15m

Fort Lauderdale

Mon 11/24

3:15 pm-9:30 am

1 stop13h 15m

$521

PortoMiami

OPO - MIA

OPOMIA

Porto

Sat 2/14

12:25 pm-8:45 pm

1 stop13h 20m

Miami

Sat 2/21

10:30 pm-4:00 pm

1 stop12h 30m

$533

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to the United States from

How to get the cheapest flight ticket from Porto to United States

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to United States?

In general, February is the cheapest month to fly from Porto to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $517. If you aren’t able to travel during the month of February, then book flights to United States from Porto during January instead. Flights to United States in January, while not as cheap as those in February, still average around $530.

What is the cheapest day to depart on your flight to United States?

According to our data, Thursday is the cheapest day to fly to United States from Porto. The lowest ticket price found for a Thursday departure recently was $640. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around $829. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.

What is the cheapest time of day to depart on your flight to United States?

The cheapest time of day to fly to United States is in the evening when flights can be purchased for as low as $542. Try not to purchase tickets in the morning because they tend to be around $708. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Porto to United States flight route?

Fly from Porto to Boston Logan Intl for the best Porto - United States flight prices

How far in advance should I book a flight to United States?

You are more likely to see cheaper flights to United States from Porto when booking weeks ahead of your departure date. In general, you can expect to find flights to United States for around $566 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United States from Porto for as low as $478 on momondo.

What cabin class options are available on Porto to United States flights?

There are 3 cabin classes available to choose from on Porto to United States flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Porto to United States flights?

You could potentially save up to 22% on your flight if you consider stops on a Porto to United States flight.

Cheap Porto to United States flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Porto to United States

Best Price Found

$593

Fastest flight time

7h 35m

Direct flights

Every day

Airports in United States

2 airports
The best one-way flight to United States from Porto in the past 72 hours is $593. The best round-trip flight deal from Porto to United States found on momondo in the last 72 hours is $486.
The fastest flight from Porto to United States takes 7h 35m
Direct flights go from Porto to United States every day.
There are 2 airports near United States: Newark (EWR), Boston Logan Intl (BOS)
Search flight deals

  • When did momondo last update prices for flights from Porto Airport to United States?

    Prices for flights from Porto Airport to United States are refreshed on a daily basis.

  • How many operators does momondo search for flights from Porto Airport to United States?

  • How old do you have to be to fly from Porto Airport to United States?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Porto Airport to United States.

  • What documentation or ID do you need to fly to United States?

    The travel and health documents you'll need for your trip to United States may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at United States. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Porto to United States?

Best airlines flying from Porto to United States

Compare and see reviews for airlines that fly from Porto to United States with momondo
Airline
Rating
Free Cancellation
Price
IberiaPriceFrom $435Free CancellationRating
7.0
3,004 reviews
Search Iberia flights
Air EuropaPriceFrom $444Free CancellationRating
7.0
568 reviews
Search Air Europa flights
Azores AirlinesPriceFrom $451Free CancellationRating
7.4
82 reviews
Search Azores Airlines flights
TAP AIR PORTUGALPriceFrom $459Free CancellationRating
7.1
2,040 reviews
Search TAP AIR PORTUGAL flights
British AirwaysPriceFrom $467Free CancellationRating
6.7
7,488 reviews
Search British Airways flights
United AirlinesPriceFrom $494Free CancellationRating
7.4
8,996 reviews
Search United Airlines flights
LufthansaPriceFrom $670Free CancellationRating
6.8
7,542 reviews
Search Lufthansa flights
KLMPriceFrom $871Free CancellationRating
7.7
1,406 reviews
Search KLM flights

Why use momondo?

Why should I use momondo to find a flight deal from Porto to United States?

It is quick and easy to find Porto to United States flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to United States that suits you.

Can I find flights from Porto to United States with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to United States from Porto with this policy.

How can momondo help me find flights from Porto to United States?

Once you have performed a search for Porto to United States flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Porto to United States right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Porto to United States now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to United States and let you know when they change.

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