PHX - OPO

$492 Find Cheap Flights from Phoenix to Porto

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Phoenix to Porto departing on 4/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Porto

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Phoenix to Porto.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Phoenix to Porto.
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Everything you should know

Cheapest round-trip
$591
Overall average: $1,586
Delta
Tue 12/30Fri 1/30
PHX - OPO • 2 stops
Cheapest one-way
$492
Typical prices: $494-$497
Lufthansa
Wed 4/1
PHX - OPO • 1 stop
Top airlines
Delta
Cheapest • from $591 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 35% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
November
Cheapest • 30% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Porto!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Phoenix to Porto (PHX-OPO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Phoenix to Porto that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Phoenix to Porto

Tue, Dec 30 - Fri, Jan 30
Delta Logo
6:19 am - 10:30 amPHX-OPO
21h 11m2 stops
Delta Logo
6:30 am - 10:15 pmOPO-PHX
22h 45m2 stops
$591Delta
Find Deal
Tue, Dec 30 - Fri, Jan 30
Delta Logo
10:45 am - 3:25 pmPHX-OPO
21h 40m2 stops
Delta Logo
6:30 am - 10:15 pmOPO-PHX
22h 45m2 stops
$596Delta
Find Deal
Thu, Feb 26 - Wed, Mar 4
Lufthansa Logo
4:21 pm - 11:40 pmPHX-OPO
24h 19m2 stops
Lufthansa Logo
6:00 am - 8:51 pmOPO-PHX
21h 51m2 stops
$626Lufthansa
Find Deal
Thu, Feb 26 - Wed, Mar 4
Lufthansa Logo
4:21 pm - 11:40 pmPHX-OPO
24h 19m2 stops
Lufthansa Logo
6:00 am - 7:18 pmOPO-PHX
20h 18m2 stops
$627Lufthansa
Find Deal
Thu, Feb 26 - Wed, Mar 4
United Airlines Logo
11:10 am - 9:30 amPHX-OPO
15h 20m1 stop
United Airlines Logo
6:00 am - 11:03 pmOPO-PHX
24h 03m2 stops
$633United Airlines
Find Deal
Fri, May 1 - Sat, May 9
Lufthansa Logo
1:40 pm - 11:25 pmPHX-OPO
25h 45m2 stops
Lufthansa Logo
6:00 am - 5:55 pmOPO-PHX
19h 55m2 stops
$638Lufthansa
Find Deal
Thu, Feb 26 - Wed, Mar 4
United Airlines Logo
11:10 am - 9:30 amPHX-OPO
15h 20m1 stop
United Airlines Logo
12:35 pm - 9:10 pmOPO-PHX
15h 35m1 stop
$643United Airlines
Find Deal
Sat, Mar 7 - Sun, Mar 15
Multiple Airlines Logo
11:55 pm - 3:15 pmPHX-OPO
32h 20m2 stops
Multiple Airlines Logo
12:05 pm - 9:44 pmOPO-PHX
40h 39m2 stops
$658Multiple Airlines
Find Deal
Sat, Nov 29 - Sat, Dec 6
Multiple Airlines Logo
3:50 pm - 10:30 amPHX-OPO
35h 40m1 stop
Multiple Airlines Logo
6:00 am - 8:12 pmOPO-PHX
21h 12m2 stops
$688Multiple Airlines
Find Deal
Sun, Dec 28 - Fri, Jan 30
American Airlines Logo
2:50 pm - 4:00 pmPHX-OPO
18h 10m2 stops
American Airlines Logo
8:20 am - 8:19 pmOPO-PHX
18h 59m2 stops
$782American Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Phoenix to Porto flights

Get data-powered insights and trends into flights from Phoenix to Porto to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Phoenix to Porto?

The average price of all round-trip flights from Phoenix Sky Harbor Intl Airport to Porto clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Porto on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Phoenix to Porto. For your return ticket, we recommend flying on a Wednesday and avoiding Tuesdays for the best deals.

What is the cheapest month to fly from Phoenix Sky Harbor Intl Airport to Porto?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Phoenix Sky Harbor Intl Airport to Porto, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Phoenix Sky Harbor Intl Airport to Porto is November, where tickets cost $595 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,586 and $1,139 respectively.

How far in advance should I book a flight from Phoenix Sky Harbor Intl Airport to Porto?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Phoenix Sky Harbor Intl Airport to Porto, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Phoenix Sky Harbor Intl Airport to Porto, you should book around 3 weeks before departure, which saves you about 35% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$492
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 34% increase in price.
Flight from Phoenix to Porto

When to book flights from Phoenix to Porto

Are your dates flexible? Find out the best times to travel from Phoenix to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Phoenix to Porto flights

  • What is the cheapest flight from Phoenix Sky Harbor Intl Airport to Porto?

    In the last 3 days, the lowest price for a flight from Phoenix Sky Harbor Intl Airport to Porto was $492 for a one-way ticket and $591 for a round-trip.

  • Do I need a passport to fly between Phoenix and Porto?

    A passport is required to fly from Phoenix to Porto.

  • Which airports will I be using when flying from Phoenix to Porto?

    Phoenix airport is called Phoenix Sky Harbor Intl and the only airport in Porto is Porto.

  • Which aircraft models fly most regularly from Phoenix to Porto?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Phoenix to Porto?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Phoenix and Porto, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Phoenix to Porto, Delta or Air Transat?

    The two airlines most popular with KAYAK users for flights from Phoenix to Porto are Delta and Air Transat. With an average price for the route of $748 and an overall rating of 7.9, Delta is the most popular choice. Air Transat is also a great choice for the route, with an average price of $807 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Phoenix to Porto?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Phoenix to Porto.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Phoenix to Porto?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Phoenix is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Phoenix to Porto?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Phoenix with another airline. Booking your flights between Phoenix and OPO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Phoenix to Porto?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Phoenix up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Phoenix to Porto

 
See real verified KAYAK customer reviews for airlines flying from Phoenix to Porto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Phoenix to Porto? 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.
7.9
DeltaOverall score based on 8001 reviews
7.9Entertainment
7.3Food
8.2Boarding
8.5Crew
7.9Comfort
Airline reviews

I truly love flying with Delta. They have always treated me with the upmost respect

10.0 ExcellentMAYRA, Nov 2025JFK - MIA
Read more Delta reviews

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Old plane and old configuration/seats but still comfortable for a morning flight

It was very good but no tv but the experience was great

Thank you for making my first experience very enjoyable. You made it all very pleasant

Great flight great seats will absolutely fly with you again

Porter airlines was good. I didn't have the best experience when booking through airfare assist however, as I got no final confirmation from them that the flight was booked until I called them. Even then, the confirmation code they gave me was incorrect and couldn't be used for check in. On a positive note airfare assist was actually picked up the phone relatively quickly when calling

The flight crew were very good, polite, and professional. Unfortunately, the rest of the experience left much to be desired. The food was extremely bland—almost tasteless. We chose the non vegetarian .The lasagna was just plain pasta with a tiny garnish and no seasoning. It felt like eating starch only, The bigger issue was with luggage and space. We boarded with three tickets, and while the seats in front of us were nearly empty, all the overhead compartments had already been filled by passengers boarding to the back. This left us and many others with no overhead storage for our carry-ons. Our bags couldn’t fit well under the seats either, which meant we lost the little legroom we had. The result was a horrible, cramped experience—sore knees, no space to stretch, and no way to rest or sleep comfortably. According to the crew this was a rather normal thing. It is obviously normal that people board with handbag and carry on but they should be only allowed to use their overhead compartment and under their seat not the way it is managed that all the spaces in the front of the plane being occupied by the people sitting way back in the plane.

Nice complete meal included and great services. Plus the plane was very clean.

Everything was horrible. On the day of my departure, I was denied check-in and boarding because my reservation only showed one of my last names, while my passport contains both. This minor discrepancy could have been easily corrected, but I was informed that no adjustment could be made. As a result, I lost not only my outbound flight but also my return flight and had to purchase a new ticket at a significantly higher cost.

This has been the worst experience I’ve ever had. Basically, I lost my round-trip tickets because one of my last names was missing, and you didn’t allow me to correct it. I had to purchase a full ticket again. Once I get home, I will start legal proceedings against you.

The crew were polite and courteous. The Pilot did an excellent landing. It was very smooth and gentle. My only regret is that I was charged twice for my luggage . The attendant gave me no receipt . I didn't realize until I was about to board. How can this be resolved? Thank you.

Very smooth flights Toronto to Rome and return. Crews were great, food was fine but very narrow seats and limited leg room. Aisle seats on our return helped with a bit more space.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

The person I bought the ticket for didn’t make the flight.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

Not the fault of United—weather, reroute around weather, time sitting on tarmac, arrived couple hours late, too late for train into city necessitating a much pricier cab but weather…can’t be helped.

We are too tired and frustrated to comment politely at this point

Ring in first class for an overnight flight, there was no blankets nor pillows for first class customers.

I didn't like that my paid for seat was changed 2 hours before my flight.

Overall, a good experience. The food, however, was subpar. The breakfast was a joke.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Wonderful crew and early arrival to our destination. It was so nice to have free wifi access and movies too. Thank you!

Bigger seats. Board back to front! Disembark front to back!

Plane was pretty clean, staff was friendly and helpful, flight left about on time arrived early. Took a long time to board and get off the plane - carry on items didn't have enough room so people had to move all around to find places.

Service in first class no longer exists on American Airlines .

Airlines have to stop assuming passengers bring entertainment. Provide it like you used to in business class and above!! N

I don't know about the others but the flight attendant that took care of us had the absolute wrong approach "how do we dare asking for water or anything else for that matter"

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Not my definition of first class. No leg room and barely any recline. The food was good. The crew was great. The comfort for the price I paid for London to Cairo was highway robbery. The Wi-Fi didn't work for me either.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.

Horrible leg room - coach seating with empty seat in middle on a 3 across seating. You buy business class for comfort which includes leg room. Absolutely no entertainment options either. Awful experience

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

The flat beds. Other than that, the place was not clean.

Moved me away from my family and refused to fix it.

I have always been pleased with their service. Would not change a thing

Everything you need to know for your flight from Phoenix to Porto

Information on your arrival and departure airports

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