What is the cheapest airline that flies from Arizona to Porto?

KLM, American Airlines, and Delta are the most popular carriers operating from Arizona to Porto

What airlines fly to Porto?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Porto from Arizona according to our data. United Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 6 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Arizona to Porto Airport?

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

How many operators does momondo search for flights from Arizona to Porto Airport?

As of December 2025, there are 6 operators available to choose from for flights from Arizona to Porto Airport.

How old do you have to be to fly from Arizona to Porto Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Arizona to Porto Airport.

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

The travel and health documents required for your trip to Porto Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Porto Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$224 Cheap Flights from Arizona to Porto in 2025/26

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Find the cheapest flights from Arizona to Porto

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:08 pm - 6:10 pm

PHX

OPO

22h 02m2 stops

5:00 am - 9:48 pm

OPO

PHX

24h 48m2 stops

$508Delta

Mon, Apr 20 - Thu, Apr 30

6:20 am - 10:30 am

PHX

OPO

21h 10m2 stops

5:00 am - 10:15 pm

OPO

PHX

24h 15m2 stops

$564Delta

Tue, Feb 10 - Thu, Feb 19

12:10 pm - 3:25 pm

PHX

OPO

19h 15m2 stops

4:20 pm - 1:10 pm

OPO

PHX

28h 50m1 stop

$569Multiple Airlines

Mon, Mar 30 - Mon, Apr 20

7:30 am - 10:30 am

PHX

OPO

20h 00m2 stops

11:20 am - 1:35 pm

OPO

PHX

33h 15m1 stop

$579KLM

Tue, Feb 10 - Thu, Feb 19

11:10 am - 9:30 am

PHX

OPO

15h 20m1 stop

6:00 am - 7:18 pm

OPO

PHX

20h 18m2 stops

$598Lufthansa

Thu, Feb 26 - Wed, Mar 4

10:19 am - 9:45 am

PHX

OPO

15h 26m1 stop

6:00 am - 10:15 pm

OPO

PHX

24h 15m2 stops

$602United Airlines

Mon, Apr 20 - Thu, Apr 30

3:25 pm - 3:25 pm

PHX

OPO

16h 00m1 stop

5:55 am - 1:10 pm

OPO

PHX

15h 15m1 stop

$607KLM

Sun, May 10 - Fri, May 15

3:25 pm - 3:25 pm

PHX

OPO

16h 00m1 stop

5:55 am - 1:10 pm

OPO

PHX

15h 15m1 stop

$608KLM

Sun, May 10 - Fri, May 15

3:25 pm - 3:25 pm

PHX

OPO

16h 00m1 stop

5:00 am - 8:37 pm

OPO

PHX

23h 37m2 stops

$610Delta

Sun, May 10 - Fri, May 15

3:50 pm - 10:25 am

PHX

OPO

35h 35m1 stop

5:00 am - 9:02 pm

OPO

PHX

23h 02m2 stops

$611KLM

Wed, Feb 4 - Sun, Feb 8

SWISS flights from Arizona to Porto

Our best SWISS deals on Arizona to Porto flight tickets

SWISS

Jan 23

PHX10:22 amPhoenix Sky Harbor Intl

17h 48m

2 stops

OPO11:10 amPorto

Feb 2

OPO12:05 pmPorto

41h 54m

2 stops

PHX10:59 pmPhoenix Sky Harbor Intl

$618

Find similar

SWISS

Jan 23

PHX10:22 amPhoenix Sky Harbor Intl

17h 48m

2 stops

OPO11:10 amPorto

Feb 2

OPO12:05 pmPorto

41h 54m

2 stops

PHX10:59 pmPhoenix Sky Harbor Intl

$619

Find similar

United Airlines flights from Arizona to Porto

Our best United Airlines deals on Arizona to Porto flight tickets

United Airlines

Apr 20

PHX10:19 amPhoenix Sky Harbor Intl

15h 26m

1 stop

OPO9:45 amPorto

Apr 30

OPO6:00 amPorto

24h 15m

2 stops

PHX10:15 pmPhoenix Sky Harbor Intl

$602

Find similar

United Airlines

Feb 26

PHX6:00 amPhoenix Sky Harbor Intl

20h 30m

2 stops

OPO9:30 amPorto

Mar 4

OPO6:00 amPorto

24h 03m

2 stops

PHX11:03 pmPhoenix Sky Harbor Intl

$612

Find similar

United Airlines

Feb 26

PHX11:10 amPhoenix Sky Harbor Intl

15h 20m

1 stop

OPO9:30 amPorto

Mar 4

OPO12:35 pmPorto

16h 02m

1 stop

PHX9:37 pmPhoenix Sky Harbor Intl

$616

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Mon 4/20

12:08 pm-6:10 pm

2 stops22h 02m

Porto

Thu 4/30

5:00 am-9:48 pm

2 stops24h 48m

$508

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Tue 2/10

6:20 am-10:30 am

2 stops21h 10m

Porto

Thu 2/19

5:00 am-10:15 pm

2 stops24h 15m

$564

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Mon 3/30

12:10 pm-3:25 pm

2 stops19h 15m

Porto

Mon 4/20

4:20 pm-1:10 pm

1 stop28h 50m

$569

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Tue 2/10

7:30 am-10:30 am

2 stops20h 00m

Porto

Thu 2/19

11:20 am-1:35 pm

1 stop33h 15m

$579

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-7:18 pm

2 stops20h 18m

$598

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Mon 4/20

10:19 am-9:45 am

1 stop15h 26m

Porto

Thu 4/30

6:00 am-10:15 pm

2 stops24h 15m

$602

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sun 5/10

3:25 pm-3:25 pm

1 stop16h 00m

Porto

Fri 5/15

5:55 am-1:10 pm

1 stop15h 15m

$607

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sun 5/10

3:25 pm-3:25 pm

1 stop16h 00m

Porto

Fri 5/15

5:55 am-1:10 pm

1 stop15h 15m

$608

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Sun 5/10

3:25 pm-3:25 pm

1 stop16h 00m

Porto

Fri 5/15

5:00 am-8:37 pm

2 stops23h 37m

$610

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Wed 2/4

3:50 pm-10:25 am

1 stop35h 35m

Porto

Sun 2/8

5:00 am-9:02 pm

2 stops23h 02m

$611

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Arizona 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

Prices

Airlines

What is the cheapest month to fly to Porto?

The month of November is, on average, the cheapest month to fly to Porto from Arizona, with most prices found around $590. If you aren’t able to travel during the month of November, then book flights to Porto from Arizona 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 Arizona 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 Arizona 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 Arizona when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $814 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from Arizona for as low as $652 on momondo.

Can stopping save me money on Arizona to Porto flights?

You could potentially save up to 11% on your flight if you consider stops on a Arizona to Porto flight.

Cheap Arizona to Porto flight deals and tips

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

Fastest flight time	14h 55m
Direct flights	None

The fastest flight from Arizona to Porto takes 14h 55m

There are no direct flights from Arizona to Porto. There are no popular flight routes from Arizona to Porto.

Search flight deals

When did momondo last update prices for flights from Arizona to Porto Airport?
Prices for flights from Arizona to Porto Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Arizona to Porto Airport?
As of December 2025, there are 6 operators available to choose from for flights from Arizona to Porto Airport.
How old do you have to be to fly from Arizona to Porto Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Arizona to Porto Airport.
What documentation or ID do you need to fly to Porto Airport?
The travel and health documents required for your trip to Porto Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Porto Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Arizona to Porto

Compare and see reviews for airlines that fly from Arizona to Porto with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $568	Free Cancellation	Rating 7.1 10,562 reviews	Search Air Canada flights
United Airlines	PriceFrom $585	Free Cancellation	Rating 7.4 9,116 reviews	Search United Airlines flights
American Airlines	PriceFrom $592	Free Cancellation	Rating 7.2 11,068 reviews	Search American Airlines flights
British Airways	PriceFrom $600	Free Cancellation	Rating 6.7 7,619 reviews	Search British Airways flights
Delta	PriceFrom $639	Free Cancellation	Rating 7.9 8,018 reviews	Search Delta flights
Air Transat	PriceFrom $797	Free Cancellation	Rating 7.7 485 reviews	Search Air Transat flights

Vila Nova de Gaia

Coimbra

Braga

Aveiro

Matosinhos

Guimarães

Esposende

Lamego

Chaves

Viseu

Espinho

Arcos de Valdevez

Pinhao

Ponte de Lima

Curia

Penafiel

Mesao Frio

Mira

Baiao

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Arizona to Porto. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Porto from Arizona which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Arizona to Porto 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 Arizona to Porto right now. Can momondo alert me if prices change?

Price alerts on flights to Porto from Arizona are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.