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Cheap flights from Phoenix Sky Harbor Intl Airport to Porto from $328

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 4/22. 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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0 bags

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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.
KLM Logo
3:25 pm - 10:05 pm
PHX
-
OPO
22h 40m
1 stop
KLM Logo
5:00 am - 4:45 pm
OPO
-
PHX
19h 45m
2 stops
$629KLM
Tue, Apr 21 - Tue, Apr 28
Delta Logo
9:35 am - 3:25 pm
PHX
-
OPO
21h 50m
2 stops
Delta Logo
5:00 am - 4:45 pm
OPO
-
PHX
19h 45m
2 stops
$633Delta
Tue, Apr 21 - Tue, Apr 28
British Airways Logo
9:00 pm - 9:05 am
PHX
-
OPO
28h 05m
1 stop
British Airways Logo
8:20 am - 10:32 pm
OPO
-
PHX
22h 12m
2 stops
$636British Airways
Tue, Apr 7 - Thu, Apr 16
Iberia Logo
4:00 pm - 4:00 pm
PHX
-
OPO
16h 00m
2 stops
Iberia Logo
12:25 pm - 11:59 pm
OPO
-
PHX
19h 34m
2 stops
$640Iberia
Mon, Apr 20 - Thu, Apr 30
Iberia Logo
8:30 am - 7:40 am
PHX
-
OPO
39h 10m
2 stops
Iberia Logo
8:40 pm - 10:32 pm
OPO
-
PHX
33h 52m
2 stops
$654Iberia
Tue, Apr 7 - Mon, Apr 13
British Airways Logo
4:30 pm - 8:05 pm
PHX
-
OPO
19h 35m
1 stop
British Airways Logo
12:25 pm - 11:33 pm
OPO
-
PHX
19h 08m
2 stops
$666British Airways
Mon, Apr 27 - Mon, May 11
British Airways Logo
5:20 pm - 8:05 pm
PHX
-
OPO
18h 45m
2 stops
British Airways Logo
12:25 pm - 10:32 pm
OPO
-
PHX
18h 07m
2 stops
$668British Airways
Mon, Apr 27 - Mon, May 11
United Airlines Logo
6:00 am - 7:00 am
PHX
-
OPO
17h 00m
2 stops
United Airlines Logo
2:25 pm - 2:23 pm
OPO
-
PHX
31h 58m
2 stops
$672United Airlines
Wed, Aug 19 - Wed, Sep 2
Air France Logo
3:25 pm - 10:05 pm
PHX
-
OPO
22h 40m
1 stop
Air France Logo
5:55 am - 1:10 pm
OPO
-
PHX
15h 15m
1 stop
$675Air France
Tue, Apr 21 - Sun, May 10
Multiple Airlines Logo
4:30 pm - 7:30 pm
PHX
-
OPO
19h 00m
1 stop
Multiple Airlines Logo
9:55 am - 7:00 pm
OPO
-
PHX
17h 05m
1 stop
$676Multiple Airlines
Tue, Apr 7 - Thu, Apr 16

United Airlines flights from Phoenix Sky Harbor Intl Airport to Porto

Our best United Airlines deals on Phoenix Sky Harbor Intl Airport to Porto flight tickets
United Airlines
Aug 19
PHX6:00 amPhoenix Sky Harbor Intl
17h 00m
2 stops
OPO7:00 amPorto
Sep 2
OPO2:25 pmPorto
31h 58m
2 stops
PHX2:23 pmPhoenix Sky Harbor Intl
$672
United Airlines
May 11
PHX7:00 amPhoenix Sky Harbor Intl
20h 15m
2 stops
OPO11:15 amPorto
May 23
OPO9:00 amPorto
21h 10m
2 stops
PHX10:10 pmPhoenix Sky Harbor Intl
$752
United Airlines
Apr 20
PHX11:59 pmPhoenix Sky Harbor Intl
25h 46m
2 stops
OPO9:45 amPorto
Apr 27
OPO12:35 pmPorto
16h 28m
1 stop
PHX9:03 pmPhoenix Sky Harbor Intl
$836

Air Canada flights from Phoenix Sky Harbor Intl Airport to Porto

Our best Air Canada deals on Phoenix Sky Harbor Intl Airport to Porto flight tickets
Air Canada
Aug 19
PHX7:07 amPhoenix Sky Harbor Intl
15h 53m
2 stops
OPO7:00 amPorto
Sep 2
OPO2:25 pmPorto
36h 55m
1 stop
PHX7:20 pmPhoenix Sky Harbor Intl
$681
Air Canada
Aug 31
PHX12:40 pmPhoenix Sky Harbor Intl
34h 20m
2 stops
OPO7:00 amPorto
Sep 6
OPO12:15 pmPorto
15h 05m
1 stop
PHX7:20 pmPhoenix Sky Harbor Intl
$835

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 March 10, 2026.
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

Cheapest round-trip

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Tue 4/21

3:25 pm-10:05 pm

1 stop22h 40m

Porto

Tue 4/28

5:00 am-4:45 pm

2 stops19h 45m

$629

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Tue 4/21

9:35 am-3:25 pm

2 stops21h 50m

Porto

Tue 4/28

5:00 am-4:45 pm

2 stops19h 45m

$633

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Tue 4/7

9:00 pm-9:05 am

1 stop28h 05m

Porto

Thu 4/16

8:20 am-10:32 pm

2 stops22h 12m

$636
Quickest round-trip

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Mon 4/20

4:00 pm-4:00 pm

2 stops16h 00m

Porto

Thu 4/30

12:25 pm-11:59 pm

2 stops19h 34m

$640

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Tue 4/7

8:30 am-7:40 am

2 stops39h 10m

Porto

Mon 4/13

8:40 pm-10:32 pm

2 stops33h 52m

$654

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Mon 4/27

4:30 pm-8:05 pm

1 stop19h 35m

Porto

Mon 5/11

12:25 pm-11:33 pm

2 stops19h 08m

$666

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Mon 4/27

5:20 pm-8:05 pm

2 stops18h 45m

Porto

Mon 5/11

12:25 pm-10:32 pm

2 stops18h 07m

$668

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Wed 8/19

6:00 am-7:00 am

2 stops17h 00m

Porto

Wed 9/2

2:25 pm-2:23 pm

2 stops31h 58m

$672

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Tue 4/21

3:25 pm-10:05 pm

1 stop22h 40m

Porto

Sun 5/10

5:55 am-1:10 pm

1 stop15h 15m

$675

PhoenixPorto

PHX - OPO

PHXOPO

Phoenix Sky Harbor Intl

Tue 4/7

4:30 pm-7:30 pm

1 stop19h 00m

Porto

Thu 4/16

9:55 am-7:00 pm

1 stop17h 05m

$676

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 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 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 $590. If you aren’t able to travel during the month of November, then book flights to Porto from Phoenix Sky Harbor Intl Airport during January instead. Flights to Porto in January, while not as cheap as those in November, still average around $619.

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 $802 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 $643 on momondo.

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

You could potentially save up to 32% on your flight if you consider stops on a Phoenix Sky Harbor Intl Airport to Porto flight.

How have Phoenix Sky Harbor Intl Airport to Porto flight prices changed over time?

As of March 2026, prices for Phoenix Sky Harbor Intl Airport to Porto flights are approximately 9% cheaper when compared to flights at the same time last year.

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

Fastest flight time

16h 00m

Direct flights

None
The fastest flight from Phoenix Sky Harbor Intl Airport to Porto takes 16h 00m
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.
Search flight deals

  • 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 16h 00m.

  • 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
American AirlinesPriceFrom $460Free CancellationRating
7.1
11,414 reviews
Search American Airlines flights
United AirlinesPriceFrom $591Free CancellationRating
7.4
9,409 reviews
Search United Airlines flights
British AirwaysPriceFrom $600Free CancellationRating
6.7
7,781 reviews
Search British Airways flights
DeltaPriceFrom $639Free CancellationRating
7.9
8,276 reviews
Search Delta 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
Braga
Aveiro
Matosinhos
Esposende
Lamego
Chaves
Pinhao
Guimarães
Espinho
Arcos de Valdevez
Viseu
Ponte de Lima
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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