$349 Find Cheap Flights from Porto to the United States - Compare and Save

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Cheap Flights from Porto to the United States

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
New York
Newarknonstop$408
Los Angeles
Los Angeles1 stop$644
Las Vegas
Las Vegas1 stop$838
San Francisco
San Francisco2 stops$701
Miami
Miami1 stop$375
Boston
Boston2 stops$489
Fort Lauderdale
Fort Lauderdale2 stops$408
Washington, D.C.
Washington, D.C.3 stops$616
Denver
Denver2 stops$780
Seattle
Seattle1 stop$679
Atlanta
Atlanta2 stops$672
Philadelphia
Philadelphia1 stop$821
New York
Newarknonstop$408
Los Angeles
Los Angeles1 stop$644
Las Vegas
Las Vegas1 stop$838
San Francisco
San Francisco2 stops$701
Miami
Miami1 stop$375
Boston
Boston2 stops$489
Fort Lauderdale
Fort Lauderdale2 stops$408
Washington, D.C.
Washington, D.C.3 stops$616
Denver
Denver2 stops$780
Seattle
Seattle1 stop$679
Atlanta
Atlanta2 stops$672
Philadelphia
Philadelphia1 stop$821

Price, demand and travel trends for Porto to the United States flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from Porto to the United States cheaper or more expensive than last year?

Fares from Porto to the United States are running about 7% higher than they were around this time last year, averaging $728 round-trip.

What are the cheapest fares from Porto to the United States right now?

Here are the cheapest round-trip fares from Porto to the United States on KAYAK in the last week:

• Miami (MIA) from $375
• Newark (EWR) from $418
• Boston Logan Intl (BOS) from $489
• Chicago O'Hare Intl (ORD) from $510
• Orlando (MCO) from $550

What’s the cheapest month to fly from Porto to the United States?

April is the cheapest time of year to fly, with average fares of $637. Prices are highest in July, when average flight costs increase to around $897.

When is the best time to book flights from Porto to the United States?

Book your flights 25 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 22% compared to booking last-minute (within 2 weeks of departure).

Which airport in the United States is the cheapest to fly to from Porto?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into the United States are:

• Miami (MIA) from $657
• New York John F Kennedy Intl (JFK) from $660
• Newark (EWR) from $672

What’s the cheapest day to fly from Porto to the United States?

Thursday tends to be the cheapest day to fly from Porto to the United States, while Sunday is the most expensive. Fares run about 18% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Porto to the United States?

Data from the past 12 months shows it's cheapest to fly to the United States during the evening with average prices of $727. The morning is the most expensive time to fly, with average prices of $867.

Key details for Porto to the United States flights

Low season

February

Cheapest flight

$349
Beat the crowds with an average 26% drop in travelers.
The most popular month to fly with an average 17% increase in travelers.
One-way flight from Porto to Boston

Flights from Porto to the United States: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Porto to the United States 
MikeFlew with TAP AIR PORTUGAL-Sep 2026
The throne seats (rows 2 anf 4) are single seats, so no being the climber or" climbee" in these rows. The other seats in business class are 2's so the window seats have to climb over the aisle seats to use the bathroom. If the aisle person is reclined and sleeping, it might be a challenge. Therefore, my wife and I (fortunately) were in row 4. The throne seats also have extra space.
Verified travelerFlew with TAP AIR PORTUGAL-Aug 2024
Boarding by zones is great, but overall announcements at airports incomprehensible as there is much noise from passengers. If a screen could display the announcements as being voiced it would facilitate much confuion

Your Porto to the United States flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Porto to the United States?

    Yes. Fares from Porto to the United States are low right now. As a rule of thumb, a round-trip under $603 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Porto to the United States?

    Over the past 12 months, round-trip fares from Porto to the United States have ranged from $603 to $1,017.

  • What are the main airports serving the United States?

    The United States has 700 airports. The three busiest are Newark (EWR) (26% of arrivals), New York John F Kennedy Intl (JFK) (12%) and Boston Logan Intl (BOS) (10%).

  • What airlines fly nonstop from Porto to the United States?

    Based on the flight schedule for the next 3 months, 3 airlines offer nonstop flights on this route:

    • TAP AIR PORTUGAL
    • United Airlines
    • Delta

  • Where in the United States can I fly nonstop from Porto?

    Based on the flight schedule for the next 3 months, you can fly nonstop from Porto to two destinations: New York and Boston.

  • Is it cheaper to fly with a layover from Porto to the United States?

    Yes. Nonstop flights from Porto to the United States average $681 over the past 12 months, but flights with a layover can cost less. The most affordable connecting airports are:

    • Kastrup Copenhagen (CPH) from $568
    • Barcelona-El Prat (BCN) from $578
    • Lajes (TER) from $654

  • How long is a flight from Porto to the United States?

    Nonstop flights take 8h 14m on average. The fastest scheduled flight takes 7h 20m, from Porto (OPO) to Boston Logan Intl (BOS).

  • How often are flights from Porto to the United States delayed and what's the average delay?

    19% of flights on this route are delayed by at least 15 minutes. The average delay is 2h 36m.

  • Which cabin classes are available on flights from Porto to the United States?

    On flights from Porto to the United States you can book Economy Class, Premium Economy Class, Business Class or First Class.

  • What are some popular landmarks in the United States?

    KAYAK travelers' favorite landmarks in the United States include:

    • Times Square
    • Universal Orlando Resort
    • New York City Center
    • San Antonio River Walk

  • What are the earliest and latest flights from Porto to the United States?

    The earliest nonstop flight from Porto to the United States departs at 9:15 am and the latest departs at 7:40 pm. Nonstop flights take about 8h 14m.

Your guide to booking Porto to the United States flights

Get tips on when to book, when to fly and what to know before your trip.
  • If you can plan ahead, the sweet spot for booking your flight is 25 weeks before your trip. KAYAK data shows fares in this window are around 22% lower than last-minute bookings (made within 2 weeks of departure). Not ready to commit? Set a Price Alert and we'll let you know when prices change.
  • If your travel dates are flexible, book your trip for April when flights are typically cheapest and avoid July when prices are at their highest.
  • Flying on Thursday is usually the cheapest. Flights on Sunday cost about 18% more on average, so being flexible with your travel dates could help you save.
  • If arriving on time matters more than price, consider flying with one of the most punctual airlines on this route: United Airlines, Delta and TAP AIR PORTUGAL.
  • If you're looking to save, Miami (MIA) is the cheapest airport to fly into from Porto. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in New York, which is the most popular destination in the United States. From there, it's easy to continue on to other popular destinations such as Las Vegas, Chicago and Orlando.
  • If you want the shortest trip, choose the Porto to the United States nonstop route. If you'd rather save money, the route via Kastrup Copenhagen (CPH) is usually the cheapest.

Reviews of the top 5 airlines serving from Porto to the United States

 
Need help choosing which airline to fly with from Porto to the United States? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8650 reviews
8.1Boarding
8.5Crew
7.8Entertainment
7.2Food
7.8Comfort
Airline reviews

The baseline is to have everything happen as expected. That is what happened with the small exception that climate control in the aircraft sss not turned on when boarding started making the aircraft very hot. All in all great experience!

10.0 ExcellentChristopher, Oct 2026
Read more Delta reviews

The baseline is to have everything happen as expected. That is what happened with the small exception that climate control in the aircraft sss not turned on when boarding started making the aircraft very hot. All in all great experience!

On time, quick boarding, so nice of them to honor active and retired military with early boarding. Attendants were nice . Plane was clean. A bit crowded like all flights.

My bag was open when I got to Portland and all my clothes were wet and my parking pass was wet

I liked one of the movies ( which I'm not a movie person" but this was so funny. I had to keep my laughter out loud to a muffle.! I felt too squished in my window seat and the man next to me was not big and bulky or heavy. I like the option of only two seats together. It made it much better for bathroom breaks.

Crew members were nice and professional. TV, you have to press very hard on the screen to get it to respond and WiFi didn’t work. Overall okay flight

Terrible. I was bumped off of my original flight and spent the next six days fighting to get back on it. I lost hours of my vacation trying to get this situation corrected.

Boarding was tough as we had to take a bus out to the plane and walk up a lot of stairs. Difficult with heavy carry-ons that said I got an entire empty row of seats, which was excellent for an international flight. Food was very mediocre but happy with the comfort so not complaining.

Delta is a cut above the others in customer service.

Tasty snacks. On-time departure and early arrival. Luggage arrived quickly at the carrousel. The only negative was a man behind us that was heavily inebriated. He was served 3 double drinks during the flight. There was no telling how much he had before the flight. He was so out of it that he spilled a drink and broke the heavy liquor glass on the floor. I don't believe he should have been served so much alcohol on a two-hour flight.

Checkin was easy, boarding was organized, employees friendly and nice. Was a lovely flight.

I couldn’t give an honest evaluation, because the Houston airport has a problem and I was stand up for several hours and after a long trip from Munich I feel really very tired

It was very good. the food was varied and tasty, the movie was the same, maybe I would recommend changing the movie selection every month because my flight to Amsterdam was in September and I came back from Munich en October they are flights so long and we need something to see. But however I liked flying with United

Our flight was delayed 2.5 hours from Lisbon to DC so we missed our connection to Seattle that would have arrived at about 9 PM. The agent initially said we had to stay overnight in DC and there were no other options to put us on to get us to Seattle. While on board I discovered a flight via American he could have put us in but by the time we arrived in DC that was sold out. We were then put on a flight to San Francisco that was also delayed then arrived in San Francisco and our flight to Seattle was also delayed so we ended up not arriving until 2:15 am. Our son could not pick us up so we ended up having to pay over $100 to Uber home. This is the second trip with United that the flight has been delayed causing us to miss an evening in Las Vegas and we were given nothing.

I paid $7,000 to fly round trip to Porto. I thought it was for business class. But on the leg from Miami to Newark, and again from Newark to Miami, i was in coach. One time in the middle seat of coach. From Newark to Porto I was in business class as expected, and it was fine. I fly to Portugal once per month, often paying $5,000 for business class. Usually i fly American Airlines. I'd be happy to fly more with United Airlines. But my experience was disappointing because i was put in the coach for almost half the flights.

I would have liked an opportunity to move to a different seat ( even would have checked in my hand luggage)as I had health issues where I didn't have to clamber over the passenger next to me to for toilet use/ movement [ She was a highly unpleasant neighbor to sit next to]. In addition, I found that my European phone plan had run out of data and so I was not receiving emails from yourselves on airport wifi to be able to check in online and verifications difficult as did not accept the ticket number I had. I asked for an extra blanket but was told there was none. Then I saw other passengers receiving them. I couldn't eat the food and asked for snacks : Stewardess said " on the way" but they did not bring. The best bit was the check in process in Lisbon. Very efficient. However, I did not understand why we had to collect our bags at Washington then go through customs again. It was not explained. I also with my leg and health issue had approximately mile walk to the gate ( which then changed) . There appeared to be no moving walkways or help provided.

United left one of our bags back in SFO but that’s not my real complaint. The complaint is how it all went down. So we checked in the day before online and were told we could use the quick drop for luggage. So the next day I used baggage quick drop curbside at SFO. The agent mistakenly didn't tag my bag as he put my bag on the conveyor belt untagged. We immediately alerted him he had not tagged the bag. I walked with him to the baggage service office to find my bag and tag it. We waited outside the office for 10 mins. He came out and said everything was ok and the bag was going to be tagged and on my flight. We received a text that one of our bags was on the flight but the other was not. I alerted my first class flight attendant immediately upon boarding the flight. She was helpful and said she’d get it sorted out right away. She called over the gate agent. The gate agent used my bag number and looked over information on her device. She said my bag was on the flight. The flight attendant was standing with her, looking at the device, and also said “yep it’s on the flight”. During the flight the flight attendant made reference to how reassuring it must feel knowing the bag was on the flight. Upon arriving to IAD we received a text that my bag was not on my flight. The text said my bag would arrive to my final destination LIS 24 hrs late. I understand that mistakes happen. I was totally ok with my bag mistakenly not getting tagged at the quick drop. I was fine with walking down to baggage services to tag my bag. But, what I am not ok with is that the United staff said they fixed the mistake two different times, assuring me twice that my bag would be/was on the plane…and it wasn’t. I expected better attention by the employees, for them to do what they said they were going to do. We also spent extra money to upgrade our seats to first class, including the entire return leg from Lisbon to San Francisco because we wanted a smoother and more relaxing travel experience. Our money was not well spent. We will not be using United for travel going forward.

Checked my bag despite paid the seat upgrade and there was plenty of space available in the overhead bin.

The flight crew was fantastic. The flight attendants were incredibly considerate, kind and attentive.

One of the best flying experiences I’ve ever had.

The flight from Lisbon to Newark was much, mush better then flight from Newark to Porto.

Flight was good. Would be great if we had free WiFi

Flight was late, and not sure why. The business class lounge in Porto is not proprietary to TAP, and is really substandard, almost as bad as "The Lounge" in Boston. It was a D, which is better than the F experience in Bostonm where we left "The Lounge" for a better experience in the terminal. It had better food (an extremely low bar), ok beverages, and wasn't as crowded as the Boston one, but no restrooms. To use one, you had to leave and go downstairs. There's no down escalator, and the elevator might be able to crowd 4 people. Otherwise, you're carying your bags down the stairs. I hope the Lisbon club is better, but for TAP to provide this in the 2nd largest city in the home country is disappointing. They put out an announcement to proceed immediately to the gate, but there was no plane and few seats. from the lounge, 8 people with bags waited in line for the single tiny elevator. After almost an hour of standing, we finally boarded. TAP, at least on this plane, doesn't offer a welcome drink to business class passengers. Having said that, the crew was very friendly and accomodating. We landed about an hour late and then were told we were going to be on the runway for at least a half hour because no gate was available. So, bottom line, D- for pre boarding, A for flight attendents, B + for business class food, and Incomplete for post landing.

Food is poor. Drinks in dixie cups, only white/red wine in Premium Prime despite business class food-which even that is a joke. Second “meal” on a 12 hour flight is a bagged sandwich in a cardboard box, which on premium airlines is a snack served BETWEEN meals. The premium economy product has some good parts but is obviously a cheap way of somewhat upgrading economy without actually putting any money into it. Lisbon airport is overcrowded and almost 3rd world as an airport. Crew is efficient but militaristic-crrtianly not “warm”. Entire experience feels like an intercontinental budget airline.

They left our luggage uncovered on tarmac in pouring rain during an hour delay of departure! At our final destination, we found ALL OF OUR CLOTHES/SHOES soaked all the way through!! Our 1st connection plane was a great business class accommodation but only 50 minutes long. Our 2nd connection from Lisbon (another delay with luggage uncovered on tarmac) had only the extra legroom and mediocre food in business class - no entertainment and no extra comfort seating. Will not use TAP Air Portugal again!

Wonderful just hope the had more direct flights to Boston

Boarding process was fast and efficient. Short flight but on time and well organized. I would certainly fly TAP again.

Very borderline, low budget airline without low budget prices There are no counts of soda, everything is dispensed enlarged bottles and poured into tiny cups about 70 mL so in order to keep hydrated you have to take 3-4 cups at a time. Also, there was only one food item offered, pasta, they ran out of chicken right away. Snack was very poor. It was called tuna sandwich, which is truly borderline. The flight attend attendance seemed to be overworked and tired.

Flight from FNC to OBO was cancelled. We were rebooked to Lisbon later in the day. It was inconvenient but it worked out ok in the end.

TAP is a good, decent airline for international journeys. No complaints about the service, the crew, the comfort, or the baggage handling.

I like: The food provided was really good. I really enjoyed it Dislike: I couldn't open my window during the whole trip. Every time I wanted to do it, one of the crew came to me saying "please close it" It was a day flight. I wanted to have my window open and they didn't let me.

I respectfully request that Air Europa consider the delay of my baggage, the damage to my suitcase, and the missing personal belongings and other items from inside my suitcase as part of my claim

There are often trade-offs involved with flying cheaper airlines. With Air Europa, their crowd control is terrible--the line at check-in in Madrid was absolutely hideous 3 hours before departure. These 787 "Dreamliners" are cheaply-made and uncomfortable. And disembarking at JFK was horrid...it was 11 p.m., yet we were force to deal with those off-site shuttle buses, presumably because Air Europa doesn't want to pay what it costs for an actual gate. But as usual, the worst aspect of Air Europa flights are tones fellow passengers: unruly and oblivious to such concepts as personal space. The crew was, on the other hand, lovely.

The flight was long but everything went well. Crew was helpful and very attentive. Food was good and the entertainment options were many.

My long-haul flight experience with this airline was not very pleasant. Earphones were paid, and no eye mask or other amenities were provided. The meals were served in cardboard boxes with plastic cutlery. The restroom was unclean and ran out of toilet paper. However, the boarding process was smooth and well organized.

No WiFi on the plane. Crew was insensitive to my medical supplies and medicine in my carry on. If the crew was monitoring passengers putting 2 bags in overhead bins there would be room. We sat for 2 hours extra. Iberojet is horrible never again.

Like I said the experience was mediocre. Nothing special about this airline.

This flight was delayed by more than an hour. The seats are uncomfortable ans do not recline properly. I prepurchased a wifi pass, but wifi was not working on this flight at all. The food was bland.

Food situation was bad. Also movie choices when compared to other airlines was terrible. Seats very narrow. My tv didn’t work.

Sitting space was very tight and I am not big or fat (I am 5'10" 178 Lb), so eating was very challenging. The rest was good.

All flights with Air Europa you arrive late to the connections of other flights, I missed my train, I had to pay for my train again, the crew are antisocial, you are paying for a service, it is not free, thanks to the travelers they are there, it is the last time I fly with them,

Inflight food quality is definitely declining. Only one hot food was served and rest of were boxed meals. That’s not how was done before. Better to fly Asia or Qatar carriers for better service.

Economy plus on a long flight with Lufthansa was wonderful. Service starts with a pillow, blanket, slippers and care package waiting on your seat. An it just gets better from there.

The Linate Milano flight was delayed. Landed at Frankfort at 12:10. Then took the bus on the tarmac and the bus ride was about 20 minutes due to the airport traffic. Got off bus went to passport control, used the kiosk scanned passport, took photo and finger prints and proceeded to wait in line. I asked the attendant that I had a connecting flight at 12:50 his respond was you have to ask the other travelers in line to let you go ahead. There should be a better system. Passed passport control and the gate was at Z69 to the other end of airport. Ran there out breath, I was last person to board due to a mechanical:electrical issue plane took off 2 hours later. Lufthansa need to a better job with international connecting flight. A 1-15 minutes is not enough considering the doors typically close 15 minutes prior to take off. So the window is reduced to 1 hour with all you have to go through with a slight delay it is not enough time. The crew on the flight was excellent and received exceptional customer service.

Loved the towel at the end. Service was frequent and perfect.

Flight delays made me miss my connections. I almost missed my connecting flight because I had to get my luggage and go through immigration and then back into the airport. Connecting flight said it would be my problem if I missed it. I had to be rerouted through another city and came in 3 hours later than expected and had to hire an uber to get me home when I had everything planned out

Extremely tight connection in Frankfurt. Tickets with one hour layover are not realistic even with first flight being on time. Just barely made it and ran most of the way. 😬

It was freezing in the airplane. Everyone was wearing everything they had with them. The crew acknowledged it was cold, but did nothing about it

Short flight. No food, no entertainment. Airport very busy but moved quickly.

The flight was delayed and we were stranded at Dulles airport for 2 days (48 hours) as United Airlines cancelled the flights!

The flight was on a very small plane for a transatlantic flight. It was more suitable for a mid-distance domestic flight. The plane was also quite old and its entertainment systems repeatedly froze and shut down. Finally, the airline charged for most food and drinks--on an international flight. I will avoid Lufthansa and its partner, United, in the future. Also, the airports are a disastrous mess, with long lines and huge numbers of flights delayed (although this is beyond the airline's control). Both my flights were delayed substantially.

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