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$872+ Cheap flights from Allentown (ABE) to Porto (OPO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/27. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — OPO
nov. 28 — dic. 51
vie. 11/28
vie. 12/5
1 adult, Economy
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Cheap flight deals from Allentown to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Allentown (ABE) 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 octubre 29, 2025.

Round-trip from

$872
(United Airlines)
From Allentown-Bethlehem to Porto
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Best flights from Allentown to Porto
Discover carefully curated flight deals from Allentown to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated octubre 29, 2025.

This United Airlines deal was found by Cheapflights users on 10/26. 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.
vie. 3/2710:33 amABE - OPO
2 stops18h 57mUnited Airlines
mar. 3/316:00 amOPO - ABE
2 stops20h 47mUnited Airlines
Deal found 10/26$872
This United Airlines deal was found by Cheapflights users on 10/26. 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.
vie. 4/1711:50 amABE - OPO
2 stops16h 55mMultiple Airlines
jue. 4/306:00 amOPO - ABE
3 stops20h 47mMultiple Airlines
Deal found 10/26$1,731
This United Airlines deal was found by Cheapflights users on 10/26. 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.
vie. 4/175:32 pmABE - OPO
2 stops35h 13mUnited Airlines
jue. 4/306:00 amOPO - ABE
2 stops20h 47mUnited Airlines
Deal found 10/26$1,052

Cheapflights Fare Finder

 
Customize your flight search to find flights from Allentown 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 octubre 29, 2025.
Use the filters below to find and compare flights from Allentown to Porto that are best for you.

Fly from

Allentown

Fly to

Porto

Route

Depart

Return

Price

AllentownPorto

ABE - OPO

ABEOPO

Allentown-Bethlehem

vie. 3/27

10:33 am-9:30 am

2 stops18h 57m

Porto

mar. 3/31

6:00 am-9:47 pm

2 stops20h 47m

$872

AllentownPorto

ABE - OPO

ABEOPO

Allentown-Bethlehem

vie. 4/17

5:32 pm-9:45 am

2 stops35h 13m

Porto

jue. 4/30

6:00 am-9:47 pm

2 stops20h 47m

$1,052

AllentownPorto

ABE - OPO

ABEOPO

Allentown-Bethlehem

vie. 4/17

11:50 am-9:45 am

2 stops16h 55m

Porto

jue. 4/30

6:00 am-9:47 pm

3 stops20h 47m

$1,731

AllentownPorto

ABE - OPO

ABEOPO

Allentown-Bethlehem

mar. 11/4

12:46 pm-10:50 am

2 stops17h 04m

$891

AllentownPorto

ABE - OPO

ABEOPO

Allentown-Bethlehem

lun. 11/3

12:46 pm-10:50 am

2 stops17h 04m

$891

AllentownPorto

ABE - OPO

ABEOPO

Allentown-Bethlehem

mié. 11/5

12:46 pm-10:50 am

2 stops17h 04m

$891

AllentownPorto

ABE - OPO

ABEOPO

Allentown-Bethlehem

vie. 11/7

12:46 pm-10:50 am

2 stops17h 04m

$941

AllentownPorto

ABE - OPO

ABEOPO

Allentown-Bethlehem

jue. 11/6

12:46 pm-10:50 am

2 stops17h 04m

$941

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Best time to book a flight from Allentown to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Allentown with our price prediction graph.
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 Allentown to Porto

What is the cheapest month to book a flight from Allentown to Porto?

Currently, November is the cheapest month in which you can book a flight from Allentown to Porto (average of $409). Flying from Allentown to Porto in June is currently the most expensive (average of $759). 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.

Related info for your journey

Find useful and relevant information for your journey from Allentown to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Allentown to Porto?

    For as low as $872, United Airlines can have you in Porto from Allentown in 18h 57m. The distance between Allentown and Porto is about 3391 mi.

  • Can I find deals for flights from Allentown to Porto that include hotel bookings?

    Yes. In addition to deals on Allentown to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Allentown to Porto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Allentown to Porto.

  • Can I find deals for business class flights from Allentown to Porto?

    Yes. Cheapflights offers flight deals from Allentown to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Allentown to Porto?

    Currently, November is the cheapest month in which you can book a flight from Allentown to Porto (average of $409). Flying from Allentown to Porto in June is currently the most expensive (average of $759). 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.

See more FAQs

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Aveiro
Arcos de Valdevez
Coimbra

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