HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Porto

$719+ 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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — OPO
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Allentown 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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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 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 January 29, 2026.

This United Airlines deal was found by Cheapflights users on 1/28. 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 2/611:30 am
ABE
-
OPO
2 stops19h 10m
United Airlines
Tue 2/106:00 am
OPO
-
ABE
2 stops20h 05m
United Airlines
Deal found 1/28$719
This Delta deal was found by Cheapflights users on 1/27. 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 2/142:00 pm
ABE
-
OPO
2 stops15h 30m
Delta
Thu 2/195:00 am
OPO
-
ABE
2 stops17h 12m
Delta
Deal found 1/27$1,232
This Delta deal was found by Cheapflights users on 1/27. 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 2/152:00 pm
ABE
-
OPO
2 stops15h 30m
Delta
Fri 2/205:00 am
OPO
-
ABE
2 stops17h 12m
Delta
Deal found 1/27$1,300
This Delta deal was found by Cheapflights users on 1/27. 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.
Mon 2/1612:47 pm
ABE
-
OPO
2 stops17h 03m
Delta
Sat 2/215:00 am
OPO
-
ABE
2 stops17h 12m
Delta
Deal found 1/27$1,331

Find 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 January 29, 2026.

Round-trip from

$1,232
(Delta)
From Allentown-Bethlehem to Porto
Search Deals

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 January 29, 2026.
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

Sat 2/14

2:00 pm-10:30 am

2 stops15h 30m

Porto

Thu 2/19

5:00 am-5:12 pm

2 stops17h 12m

$1,232

AllentownPorto

ABE - OPO

ABEOPO

Allentown-Bethlehem

Sun 2/15

2:00 pm-10:30 am

2 stops15h 30m

Porto

Fri 2/20

5:00 am-5:12 pm

2 stops17h 12m

$1,300

AllentownPorto

ABE - OPO

ABEOPO

Allentown-Bethlehem

Mon 2/16

12:47 pm-10:50 am

2 stops17h 03m

Porto

Sat 2/21

5:00 am-5:12 pm

2 stops17h 12m

$1,331

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

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, February is the cheapest month in which you can book a flight from Allentown to Porto (average of $414). Flying from Allentown to Porto in June is currently the most expensive (average of $753). 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 $1,232, Delta can have you in Porto from Allentown in 15h 30m. 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, February is the cheapest month in which you can book a flight from Allentown to Porto (average of $414). Flying from Allentown to Porto in June is currently the most expensive (average of $753). 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
Vila Nova de Gaia
Aveiro
Arcos de Valdevez
Coimbra

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

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Lisbon flights
Newark to Lisbon flights
Dulles Intl to Lisbon flights
LaGuardia to Lisbon flights
Newark to Porto flights
John F Kennedy Intl to Porto flights
Reagan-National to Lisbon flights
Philadelphia to Lisbon flights
Newark to Ponta Delgada flights
LaGuardia to Porto flights
John F Kennedy Intl to Ponta Delgada flights
Dulles Intl to Porto flights
Reagan-National to Porto flights
Newark to Funchal flights
John F Kennedy Intl to Funchal flights
LaGuardia to Ponta Delgada flights
Newark to Faro flights
John F Kennedy Intl to Faro flights
Pittsburgh to Lisbon flights
LaGuardia to Faro flights
LaGuardia to Funchal flights
Dulles Intl to Funchal flights
Philadelphia to Porto flights
Reagan-National to Funchal flights
Dulles Intl to Faro flights
Dulles Intl to Ponta Delgada flights
Reagan-National to Ponta Delgada flights
Reagan-National to Faro flights
Philadelphia to Ponta Delgada flights
Pittsburgh to Porto flights
Philadelphia to Funchal flights
John F Kennedy Intl to Lajes flights
Newark to Lajes flights
Harrisburg to Lisbon flights
Dulles Intl to Lajes flights
Allentown to Lisbon flights
Philadelphia to Faro flights
John F Kennedy Intl to Pico Island flights
LaGuardia to Lajes flights
Newark to Porto Santo flights
John F Kennedy Intl to Vila do Porto flights
State College to Lisbon flights
Pittsburgh to Ponta Delgada flights
Dulles Intl to Pico Island flights
Philadelphia to Lajes flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.