$305+ Cheap flights from Phoenix to Porto (OPO)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — OPO
Aug 23 — Aug 301
Round-trip
1 adult, Economy
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Find cheap flights from Phoenix to Porto with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Phoenix to Porto
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Best
Last-minute
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Cheapest flights from Phoenix to PortoExplore the most affordable flight options available from Phoenix to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.
Explore the most affordable flight options available from Phoenix to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:15 am
PHX
- OPO
1 stop17h 15m
United Airlines
Thu 12/106:00 am
OPO
- PHX
2 stops23h 44m
United Airlines
Deal found 7/20![United Airlines logo]()
$717
This Air France deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:00 am
PHX
- OPO
1 stop19h 05m
Multiple Airlines
Wed 12/95:00 am
OPO
- PHX
2 stops19h 15m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$723
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/511:59 pm
PHX
- OPO
1 stop26h 06m
Delta
Wed 12/95:00 am
OPO
- PHX
2 stops22h 44m
Delta
Deal found 7/20![Delta logo]()
$724
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/511:59 pm
PHX
- OPO
1 stop26h 31m
United Airlines
Wed 12/96:00 am
OPO
- PHX
2 stops19h 55m
United Airlines
Deal found 7/24![United Airlines logo]()
$727
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2710:59 pm
PHX
- OPO
1 stop27h 31m
United Airlines
Mon 11/912:35 pm
OPO
- PHX
2 stops56h 03m
United Airlines
Deal found 7/20![United Airlines logo]()
$748
Best flights from Phoenix to PortoDiscover carefully curated flight deals from Phoenix to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 24, 2026.
Discover carefully curated flight deals from Phoenix to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 24, 2026.
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:15 am
PHX
- OPO
1 stop17h 15m
United Airlines
Thu 12/1012:35 pm
OPO
- PHX
1 stop18h 02m
United Airlines
Deal found 7/19![United Airlines logo]()
$726
This KLM deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/812:30 pm
PHX
- OPO
2 stops19h 55m
KLM
Tue 12/155:55 am
OPO
- PHX
1 stop15h 00m
KLM
Deal found 7/21![KLM logo]()
$729
This Delta deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2311:37 am
PHX
- OPO
2 stops19h 48m
Delta
Tue 10/65:00 am
OPO
- PHX
2 stops21h 28m
Delta
Deal found 7/20![Delta logo]()
$880
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:15 am
PHX
- OPO
1 stop16h 40m
United Airlines
Tue 8/2512:15 pm
OPO
- PHX
2 stops37h 45m
United Airlines
Deal found 7/20![United Airlines logo]()
$864
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/43:25 pm
PHX
- OPO
1 stop22h 35m
Delta
Fri 10/1612:45 pm
OPO
- PHX
1 stop18h 28m
Delta
Deal found 7/21![Delta logo]()
$883
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:45 am
PHX
- OPO
1 stop14h 00m
United Airlines
Fri 9/116:00 am
OPO
- PHX
2 stops20h 33m
United Airlines
Deal found 7/21![United Airlines logo]()
$926
This Delta deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:58 pm
PHX
- OPO
2 stops20h 22m
Delta
Fri 9/115:55 am
OPO
- PHX
1 stop15h 15m
Delta
Deal found 7/24![Delta logo]()
$937
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
PHX
- OPO
1 stop16h 15m
United Airlines
Tue 9/812:35 pm
OPO
- PHX
1 stop18h 11m
United Airlines
Deal found 7/23![United Airlines logo]()
$939
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:00 am
PHX
- OPO
2 stops17h 00m
United Airlines
Tue 10/612:15 pm
OPO
- PHX
3 stops40h 34m
United Airlines
Deal found 7/20![United Airlines logo]()
$953
Last-minute flights from Phoenix to PortoDiscover last-minute flight deals from Phoenix to Porto. Data last updated July 24, 2026 and is based on user searches.
Discover last-minute flight deals from Phoenix to Porto. Data last updated July 24, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:15 am
PHX
- OPO
1 stop16h 40m
United Airlines
Tue 8/2512:15 pm
OPO
- PHX
2 stops37h 45m
United Airlines
Deal found 7/20![United Airlines logo]()
$864
This Air Canada deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:55 pm
PHX
- OPO
3 stops52h 05m
Multiple Airlines
Tue 8/258:40 am
OPO
- PHX
2 stops34h 19m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$1,008
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:50 am
PHX
- OPO
1 stop13h 05m
United Airlines
Thu 8/276:00 am
OPO
- PHX
2 stops20h 23m
United Airlines
Deal found 7/21![United Airlines logo]()
$941
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:00 am
PHX
- OPO
2 stops17h 00m
United Airlines
Wed 8/2611:20 am
OPO
- PHX
2 stops33h 36m
United Airlines
Deal found 7/24![United Airlines logo]()
$932
This Justfly.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:55 am
PHX
- OPO
1 stop15h 05m
Lufthansa
Wed 8/266:00 am
OPO
- PHX
2 stops22h 37m
Lufthansa
Deal found 7/24![Lufthansa logo]()
$933
This Justfly.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2212:00 pm
PHX
- OPO
2 stops40h 05m
Multiple Airlines
Sat 8/297:20 pm
OPO
- PHX
2 stops35h 39m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$999
This FlightHub deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2211:28 am
PHX
- OPO
2 stops40h 32m
SWISS
Sat 8/297:20 pm
OPO
- PHX
2 stops35h 01m
SWISS
Deal found 7/22![SWISS logo]()
$1,029
This Expedia deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:55 am
PHX
- OPO
2 stops21h 10m
Multiple Airlines
Mon 8/317:20 pm
OPO
- PHX
2 stops35h 39m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$940
One-way flights from Phoenix to PortoSearch for one-way flight options from Phoenix to Porto. Find affordable one-way fares based on user searches. Data last updated July 24, 2026.
Search for one-way flight options from Phoenix to Porto. Find affordable one-way fares based on user searches. Data last updated July 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1711:31 pm
PHX
- OPO
3 stops49h 29m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/165:55 pm
PHX
- OPO
2 stops43h 25m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:15 pm
PHX
- OPO
3 stops46h 55m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:30 am
PHX
- OPO
3 stops56h 25m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:16 am
PHX
- OPO
3 stops29h 14m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$368
This Kiwi.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/128:16 am
PHX
- OPO
3 stops28h 24m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$372
This FlightHub deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:55 am
PHX
- OPO
1 stop15h 05m
Air Canada
Deal found 7/22![Air Canada logo]()
$462
Find flight deals from Phoenix to Porto
Discover tips and strategies to find the most affordable flight options for your journey from Phoenix (PH1) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 24, 2026.
Round-trip from | $717 (United Airlines) |
|---|---|
One-way from | $305 (Kiwi.com) |
Popular in | May |
Cheapest in | January |
Average price | $993 |
Cheapflights Fare Finder
Customize your flight search to find flights from Phoenix 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, Cheapflights users made 2,558,603 searches. Data last updated July 24, 2026.
Use the filters below to find and compare flights from Phoenix to Porto that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhoenixPorto
PHX - OPO
PHXOPO
Phoenix Sky Harbor Intl
Sun 12/6
9:15 am-9:30 am
1 stop17h 15m
Porto
Thu 12/10
12:35 pm-11:37 pm
1 stop18h 02m
$726
PhoenixPorto
PHX - OPO
PHXOPO
Phoenix Sky Harbor Intl
Tue 12/8
12:30 pm-3:25 pm
2 stops19h 55m
Porto
Tue 12/15
5:55 am-1:55 pm
1 stop15h 00m
$729
PhoenixPorto
PHX - OPO
PHXOPO
Phoenix Sky Harbor Intl
Wed 8/19
6:15 am-6:55 am
1 stop16h 40m
Porto
Tue 8/25
12:15 pm-6:00 pm
2 stops37h 45m
$864
PhoenixPorto
PHX - OPO
PHXOPO
Phoenix Sky Harbor Intl
Wed 9/23
11:37 am-3:25 pm
2 stops19h 48m
Porto
Tue 10/6
5:00 am-6:28 pm
2 stops21h 28m
$880
PhoenixPorto
PHX - OPO
PHXOPO
Phoenix Sky Harbor Intl
Sun 10/4
3:25 pm-10:00 pm
1 stop22h 35m
Porto
Fri 10/16
12:45 pm-11:13 pm
1 stop18h 28m
$883
PhoenixPorto
PHX - OPO
PHXOPO
Phoenix Sky Harbor Intl
Tue 9/1
11:45 am-9:45 am
1 stop14h 00m
Porto
Fri 9/11
6:00 am-6:33 pm
2 stops20h 33m
$926
PhoenixPorto
PHX - OPO
PHXOPO
Phoenix Sky Harbor Intl
Tue 9/1
1:58 pm-6:20 pm
2 stops20h 22m
Porto
Fri 9/11
5:55 am-1:10 pm
1 stop15h 15m
$937
Quickest round-trip
PhoenixPorto
PHX - OPO
PHXOPO
Phoenix Sky Harbor Intl
Tue 9/1
6:00 am-6:15 am
1 stop16h 15m
Porto
Tue 9/8
12:35 pm-10:46 pm
1 stop18h 11m
$939
PhoenixPorto
PHX - OPO
PHXOPO
Phoenix Sky Harbor Intl
Wed 9/23
6:00 am-7:00 am
2 stops17h 00m
Porto
Tue 10/6
12:15 pm-8:49 pm
3 stops40h 34m
$953
Cheapest one-way
PhoenixPorto
PHX - OPO
PHXOPO
Phoenix Sky Harbor Intl
Mon 10/5
12:40 pm-7:00 am
2 stops34h 20m
$462
Showing 1-10 of 15 resultsSorted by cheapest first
Best time to book a flight from Phoenix to Porto
Have a flexible travel schedule? Discover the best time to fly to Porto from Phoenix with our price prediction graph.
PH1-OPO
PHX-OPO
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Phoenix to Porto
PH1-OPO
PHX-OPO
What is the cheapest month to book a flight from Phoenix to Porto?
Currently, January is the cheapest month in which you can book a flight from Phoenix to Porto (average of $619). Flying from Phoenix to Porto in May is currently the most expensive (average of $1,244). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Phoenix to Porto?
Airfare is below average for this route at the moment.
Phoenix to Porto flights typically cost between $788 and $1,112 in December.The cheapest round-trip price found within the last 5 days was $717 on United Airlines (Dec 6-Dec 10).
How far ahead should I book a flight from Phoenix to Porto?
The price you pay for your flight from Phoenix to Porto may vary depending on when you book. For the best chance of a lower fare, look to book 51 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Reviews of airlines servicing Porto
Get insights into the airlines that provide service to Porto. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto. Reviews last updated July 24, 2026.
Get a feel of what it's like to fly with Delta,Air France, andUnited Airlines from Phoenix to Porto by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Entertainment
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Phoenix to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Porto?
Book flights to Porto if you plan to visit one of these locationsVila Nova de Gaia
Arcos de Valdevez
Coimbra
Aveiro
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Phoenix to Porto
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Complete your trip
Complete your trip to Porto by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Phoenix to Porto by cabin class
Find flights from Phoenix to Porto, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Phoenix and Porto flights
Browse other Phoenix and Porto flight options. Last updated on July 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Porto
Explore flights to Porto departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 24, 2026.
Top 4 airlines flying from Phoenix to Porto
Discover the top 4 airlines that operate flights from Phoenix to Porto. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$460 | Average$861 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$556 | Average$921 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$589 | Average$862 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$646 | Average$1,134 | FlexibilityNo cancel fee | On-timeN/A |