$268 Cheap KLM flights Porto (OPO) to Heraklion (HER)

View $268 flight on Tue, Oct 21, 2025Opens in a new window

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$268 Cheap KLM flights Porto (OPO) to Heraklion (HER)

Prices were available within the past 7 days and start at $268 for one-way flights and $537 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Tue, Jul 29 - Wed, Aug 20
OPO
Porto
HER
Heraklion
$537 Roundtrip, found 3 days ago
$537
Roundtrip
found 3 days ago
Select KLM flight, departing Tue, Jul 29 from Porto to Heraklion, returning Wed, Aug 20, priced at $537 found 3 days ago
Flights from Porto (OPO) to Heraklion (HER)
Origin airport
Dr. Francisco de Sa Carneiro
Destination airport
Nikos Kazantzakis
Airlines serving
Aegean, Air France, Austrian Airlines, British Airways, Brussels Airlines, Eurowings, KLM, Lufthansa, Swiss International Air Lines
Popular airline
Swiss International Air Lines
Distance
1867 mi

Frequently asked questions

How much is a KLM flight from Dr. Francisco de Sa Carneiro Airport (OPO) to Nikos Kazantzakis Airport (HER)?
Scoring cheap one-way KLM flights from OPO to HER from $268 on Expedia is easy — just filter by "Price (lowest to highest)." Or check out our budget-friendly round-trip fares from $537 for your next adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from OPO to HER with KLM?
Search for one-way or return flights to Heraklion in February or January. You could find lower fares with KLM during these off-peak travel months.
What is the cheapest time to book flights from Dr. Francisco de Sa Carneiro Airport (OPO) to Nikos Kazantzakis Airport (HER) with KLM?
To get cheap flights from OPO to HER with KLM, start your search about one month before your intended departure. You can save 17% when you book your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Another helpful tip? Booking on Sunday offers average savings of 17% compared to Friday (the most expensive day).**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does KLM fly nonstop from Dr. Francisco de Sa Carneiro Airport (OPO) to Nikos Kazantzakis Airport (HER)?
Fill in your dates, press search and use the "Nonstop" filter on Expedia to find any direct flights from OPO to HER with KLM or other airlines.
What is the earliest KLM flight from OPO to HER?
Filter your results by "Early Morning" and "Morning" to see the earliest flights from OPO to HER. Heading off early means flight cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does KLM fly into in Heraklion?
Hop on a KLM flight from Dr. Francisco de Sa Carneiro Airport (OPO) to Heraklion, and you're most likely to touch down at Nikos Kazantzakis Airport (HER). This is the airline's primary hub in this city.
Why fly with KLM from OPO to HER?
Depart from OPO to HER with KLM and enjoy a range of benefits including a 4-star airline rating. When booking through Expedia as a KLM Flying Blue and One Key™ member, you can also earn OneKeyCash™* to spend on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my KLM flight from Dr. Francisco de Sa Carneiro Airport (OPO) to Nikos Kazantzakis Airport (HER)?
Changes are generally free within 24 hours of booking, but your airline may charge a fee after that. For further information about modifying your reservation, go to your "Trips," select your flight and click on "Manage Booking." If you want the freedom to make changes without additional costs, tick the "No cancel fee" or "Changes included" filter when planning your next escape.

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*Available to One Key members.