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Cheap flights from Phoenix Sky Harbor Intl Airport to Porto from $346

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Phoenix Sky Harbor Intl Airport to Porto departing on 12/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Phoenix Sky Harbor Intl Airport to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
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
$558United Airlines
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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 - 3:09 pmOPO-PHX
40h 09m3 stops
$559United Airlines
Find Deal
Thu, Feb 26 - Wed, Mar 4
United Airlines Logo
9:40 am - 9:30 amPHX-OPO
16h 50m2 stops
United Airlines Logo
6:00 am - 8:51 pmOPO-PHX
21h 51m2 stops
$562United Airlines
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Thu, Feb 26 - Wed, Mar 4
United Airlines Logo
8:38 am - 9:30 amPHX-OPO
17h 52m2 stops
United Airlines Logo
6:00 am - 3:09 pmOPO-PHX
40h 09m3 stops
$563United Airlines
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Thu, Feb 26 - Wed, Mar 4
Delta Logo
7:00 am - 10:30 amPHX-OPO
20h 30m2 stops
Delta Logo
6:05 am - 12:08 amOPO-PHX
25h 03m2 stops
$591Delta
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Mon, Nov 10 - Tue, Nov 25
Air Canada Logo
6:30 pm - 3:15 pmPHX-OPO
37h 45m2 stops
Air Canada Logo
6:15 am - 10:19 pmOPO-PHX
23h 04m2 stops
$647Air Canada
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Sat, Mar 7 - Sun, Mar 15
American Airlines Logo
2:50 pm - 4:00 pmPHX-OPO
18h 10m2 stops
American Airlines Logo
8:40 pm - 10:19 amOPO-PHX
20h 39m2 stops
$671American Airlines
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Sun, Dec 28 - Fri, Jan 30
British Airways Logo
3:30 pm - 4:05 pmPHX-OPO
17h 35m2 stops
British Airways Logo
4:55 pm - 6:20 pmOPO-PHX
32h 25m1 stop
$728British Airways
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Wed, Mar 11 - Thu, Mar 19
Delta Logo
10:50 am - 3:25 pmPHX-OPO
21h 35m2 stops
Delta Logo
6:05 am - 9:07 pmOPO-PHX
22h 02m2 stops
$747Delta
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Fri, Nov 7 - Tue, Nov 11
British Airways Logo
3:30 pm - 5:15 pmPHX-OPO
18h 45m2 stops
British Airways Logo
4:55 pm - 6:20 pmOPO-PHX
32h 25m1 stop
$828British Airways
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Thu, Mar 12 - Thu, Mar 19

Lufthansa flights from Phoenix Sky Harbor Intl Airport to Porto

Our best Lufthansa deals on Phoenix Sky Harbor Intl Airport to Porto flight tickets
Lufthansa
Mar 10
PHX11:30 amPhoenix Sky Harbor Intl
18h 20m
2 stops
OPO12:50 pmPorto
Mar 23
OPO1:45 pmPorto
37h 09m
2 stops
PHX7:54 pmPhoenix Sky Harbor Intl
$594
Find similar
Lufthansa
Mar 9
PHX8:45 amPhoenix Sky Harbor Intl
30h 40m
2 stops
OPO10:25 pmPorto
Mar 23
OPO1:45 pmPorto
37h 09m
2 stops
PHX7:54 pmPhoenix Sky Harbor Intl
$606
Find similar
Lufthansa
Mar 9
PHX5:30 pmPhoenix Sky Harbor Intl
21h 55m
2 stops
OPO10:25 pmPorto
Mar 20
OPO6:15 amPorto
47h 07m
2 stops
PHX10:22 pmPhoenix Sky Harbor Intl
$612
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British Airways flights from Phoenix Sky Harbor Intl Airport to Porto

Our best British Airways deals on Phoenix Sky Harbor Intl Airport to Porto flight tickets
British Airways
Mar 11
PHX3:30 pmPhoenix Sky Harbor Intl
17h 35m
2 stops
OPO4:05 pmPorto
Mar 19
OPO4:55 pmPorto
32h 25m
1 stop
PHX6:20 pmPhoenix Sky Harbor Intl
$728
Find similar
British Airways
Mar 12
PHX3:30 pmPhoenix Sky Harbor Intl
18h 45m
2 stops
OPO5:15 pmPorto
Mar 19
OPO4:55 pmPorto
32h 25m
1 stop
PHX6:20 pmPhoenix Sky Harbor Intl
$828
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momondo Fare Finder

 
Customize your flight search to find flights from Phoenix Sky Harbor Intl Airport 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, momondo users made 832,500 searches. Data last updated October 22, 2025.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Thu 2/26

11:10 am-9:30 am

1 stop15h 20m

Porto

Wed 3/4

6:00 am-11:03 pm

2 stops24h 03m

$558

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Thu 2/26

11:10 am-9:30 am

1 stop15h 20m

Porto

Wed 3/4

6:00 am-3:09 pm

3 stops40h 09m

$559

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Thu 2/26

9:40 am-9:30 am

2 stops16h 50m

Porto

Wed 3/4

6:00 am-8:51 pm

2 stops21h 51m

$562

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Thu 2/26

8:38 am-9:30 am

2 stops17h 52m

Porto

Wed 3/4

6:00 am-3:09 pm

3 stops40h 09m

$563

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Mon 11/10

7:00 am-10:30 am

2 stops20h 30m

Porto

Tue 11/25

6:05 am-12:08 am

2 stops25h 03m

$591

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sat 3/7

6:30 pm-3:15 pm

2 stops37h 45m

Porto

Sun 3/15

6:15 am-10:19 pm

2 stops23h 04m

$647

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sun 12/28

2:50 pm-4:00 pm

2 stops18h 10m

Porto

Fri 1/30

8:40 pm-10:19 am

2 stops20h 39m

$671

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Wed 3/11

3:30 pm-4:05 pm

2 stops17h 35m

Porto

Thu 3/19

4:55 pm-6:20 pm

1 stop32h 25m

$728

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Fri 11/7

10:50 am-3:25 pm

2 stops21h 35m

Porto

Tue 11/11

6:05 am-9:07 pm

2 stops22h 02m

$747

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Thu 3/12

3:30 pm-5:15 pm

2 stops18h 45m

Porto

Thu 3/19

4:55 pm-6:20 pm

1 stop32h 25m

$828

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Porto from

How to get the cheapest flight ticket from Phoenix Sky Harbor Intl Airport to Porto

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 typical price of a round-trip flight between Phoenix Sky Harbor Intl Airport and Porto?

What is the cheapest month to fly to Porto?

The month of November is, on average, the cheapest month to fly to Porto from Phoenix Sky Harbor Intl Airport, with most prices found around $592. If you aren’t able to travel during the month of November, then book flights to Porto from Phoenix Sky Harbor Intl Airport during March instead. Flights to Porto in March, while not as cheap as those in November, still average around $604.

What is the cheapest day to depart on your flight to Porto?

The cheapest day to depart on your flight to Porto is on a Wednesday when prices can be found for as low as $758. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $1,126. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

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

In the afternoon is the cheapest time of day to fly from Phoenix Sky Harbor Intl Airport to Porto when you can find flight prices for as low as $795. Flying to Porto in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $983 on average. Flights to Porto from Phoenix Sky Harbor Intl Airport in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Porto?

You are more likely to see cheaper flights to Porto from Phoenix Sky Harbor Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $848 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from Phoenix Sky Harbor Intl Airport for as low as $652 on momondo.

Can stopping save me money on Phoenix Sky Harbor Intl Airport to Porto flights?

You could potentially save up to 8% on your flight if you consider stops on a Phoenix Sky Harbor Intl Airport to Porto flight.

When to book flights from Phoenix Sky Harbor Intl Airport to Porto

Are you open to changing your travel dates? Check out the ideal times to fly from Phoenix Sky Harbor Intl Airport to Porto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Phoenix Sky Harbor Intl Airport to Porto (PHX to OPO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Phoenix Sky Harbor Intl Airport to Porto

Direct flights

None
There are no direct flights from Phoenix Sky Harbor Intl Airport to Porto. There are no popular flight routes from Phoenix Sky Harbor Intl Airport to Porto.
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  • How far is Phoenix Sky Harbor Intl to Porto by plane?

    The straight-line distance from Phoenix Sky Harbor Intl to Porto is 5347.3 mi. In terms of flight time, this usually takes a little over 13h 45m.

  • When did momondo last update prices for flights from Phoenix Sky Harbor Intl Airport to Porto Airport?

    Prices for flights from Phoenix Sky Harbor Intl Airport to Porto Airport were last updated today.

  • How many operators does momondo search for flights from Phoenix Sky Harbor Intl Airport to Porto Airport?

  • How old do you have to be to fly from Phoenix Sky Harbor Intl Airport to Porto Airport?

    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 Phoenix Sky Harbor Intl Airport to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The required travel and health documents for your Porto Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Porto Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Phoenix Sky Harbor Intl Airport to Porto?

Best airlines flying from Phoenix Sky Harbor Intl Airport to Porto

Compare and see reviews for airlines that fly from Phoenix Sky Harbor Intl Airport to Porto with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $568Free CancellationRating
7.1
10,335 reviews
Search Air Canada flights
United AirlinesPriceFrom $585Free CancellationRating
7.4
8,988 reviews
Search United Airlines flights
American AirlinesPriceFrom $592Free CancellationRating
7.2
11,028 reviews
Search American Airlines flights
British AirwaysPriceFrom $600Free CancellationRating
6.7
7,466 reviews
Search British Airways flights
DeltaPriceFrom $639Free CancellationRating
7.9
7,980 reviews
Search Delta flights
Air TransatPriceFrom $797Free CancellationRating
7.8
466 reviews
Search Air Transat flights

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Aveiro
Braga
Matosinhos
Esposende
Lamego
Guimarães
Chaves
Espinho
Viseu
Ponte de Lima
Arcos de Valdevez
Pinhao
Curia
Penafiel
Mesao Frio
Mira
Baiao

Why use momondo?

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

It is quick and easy to find Phoenix to Porto 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 Porto that suits you.

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

Yes. momondo allows you to filter the results for Phoenix to Porto flights to just show those with flexible booking policies.

How can momondo help me find flights from Phoenix to Porto?

Once all potential Phoenix to Porto flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Porto from Phoenix. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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