In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

What is the cheapest time of day to fly from ABE to OPO?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Allentown to Porto as you normally would.

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.

$1,319+ Flights from Allentown to Porto

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Cheap flight deals from Allentown to Porto

Round-trip from	$1,319 (United Airlines)

From Allentown-Bethlehem to Porto

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Find flight deals from Allentown to Porto

Cheapest flights from Allentown to Porto
Explore the most affordable flight options available from Allentown to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Sat 9/136:37 amABE - OPO

2 stops19h 18mUnited Airlines

Sat 9/206:00 amOPO - ABE

3 stops20h 54mUnited Airlines

Deal found 7/30

$1,319

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 July 30, 2025.

Sat 9/136:37 amABE - OPO

2 stops19h 18mUnited Airlines

Sat 9/206:00 amOPO - ABE

3 stops20h 54mUnited Airlines

Deal found 7/30

$1,319

Last-minute flights from Allentown to Porto
Discover last-minute flight deals from Allentown to Porto. Data last updated July 30, 2025 and is based on user searches.

Mon 8/115:35 pmABE - OPO

2 stops41h 10mUnited Airlines

Mon 8/186:00 amOPO - ABE

2 stops39h 53mUnited Airlines

Deal found 7/28

$1,877

Fly from

Fly to

Route

Depart

Return

Price

AllentownPorto

ABE - OPO

ABEOPO

Allentown-Bethlehem

Sat 9/13

6:37 am-6:55 am

2 stops19h 18m

Porto

Sat 9/20

6:00 am-9:54 pm

3 stops20h 54m

$1,319

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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, January is the cheapest month in which you can book a flight from Allentown to Porto (average of $523). Flying from Allentown to Porto in June is currently the most expensive (average of $1,033). 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.

Reviews of airlines servicing Porto

Peruse reviews from past customers who have flown with United Airlines from Allentown to Porto to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,896 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

United Airlines

7.4

Good

8,896 reviews

United Airlines

7.4

Good

8,896 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

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, January is the cheapest month in which you can book a flight from Allentown to Porto (average of $523). Flying from Allentown to Porto in June is currently the most expensive (average of $1,033). 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

Aveiro

Coimbra

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$1,319+ 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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Allentown to Porto with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

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Cheap flight deals from Allentown to Porto

Round-trip from

Find flight deals from Allentown to Porto

Cheapest flights from Allentown to PortoExplore the most affordable flight options available from Allentown to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Explore the most affordable flight options available from Allentown to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Allentown to Porto that are best for you.

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.

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?

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 30, 2025.

Peruse reviews from past customers who have flown with United Airlines from Allentown to Porto to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

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

How can I find direct flights from Allentown to Porto?

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

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

Traveling to a place near Porto?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Allentown to Porto

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Travel Smart

Cheapest flights from Allentown to Porto
Explore the most affordable flight options available from Allentown to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.