Cheap Flights from Porto to Grenoble

Compare Porto to Grenoble flight deals

Find the cheapest month or even day of the year to fly to Grenoble

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Find the cheapest month to fly from Porto to Grenoble

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Porto to Grenoble flights are currently cheapest in March.

Porto to Grenoble: Alternative routes

Compare routes from Porto to Grenoble below. You may find an airport to fly into that's cheaper, faster, or easier than Grenoble.

Porto to Grenoble: Flight information

The things to know before you go.
Cheapest flight foundRs13,513
Cheapest month to flyMarch

Finding cheap flights from Porto to Grenoble: Frequently asked questions

The best price we found for a return flight from Porto to Grenoble is Rs39,222. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Porto to Grenoble. But we found flights with one or more stops from Rs39,222.
As of February 2026, there are no flights flying from Porto to Grenoble.
The cheapest month to fly from Porto to Grenoble is usually March.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Porto Airport to Grenoble Airport on Thursday, 19 March 2026.
No airlines currently offer direct flights between Porto Airport and Grenoble Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Grenoble but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Grenoble is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Ryanair offers the cheapest flight tickets to Grenoble.

Flying from Porto Airport (OPO) to Grenoble-Isere Airport (GNB): what you need to know

  • Grenoble is one hour ahead of Porto and observes the UTC+1 timezone.

  • To ensure you catch your OPO to GNB flight, leave enough time for things like check-in and baggage drop. Arriving two hours before international departures and one hour before domestic flights is the general travel rule.

  • You'll likely experience longer queues in popular months such as August. Arriving up to four hours ahead of international flights and two hours for domestic departures is a good idea.

  • Consider adding a stopover when booking your ticket from Porto Airport to Grenoble-Isere Airport. Just uncheck 'Direct flights only' to break up your journey, or visit a new city along the way. Here are some options between OPO and GNB:

    • Stansted Airport

    • Bristol Airport

    • London Luton Airport

How to find the cheapest flights from Porto Airport (OPO) to Grenoble-Isere Airport (GNB)

  • Currently, Rs13,513 is the lowest price we've seen for a one-way Porto Airport to Grenoble-Isere Airport flight. The best price for a return ticket is Rs39,222. Keep in mind that fares could change due to demand at the time of booking.

  • To pick up cheap tickets from OPO to GNB, book ahead. Airlines usually offer their best fares when flights are first made available.

  • Finding cheap flights from Porto Airport to Grenoble-Isere Airport is easy if you're flexible with your travel plans. Use the 'Whole month' search function to see the lowest fares throughout the month and snap up a great deal.

  • Landing cheap flights from OPO to GNB is easy with Price Alerts. Simply create one of these automatic alerts and we'll let you know when a lower fare pops up.

  • Tailor your trip with filters. Pick your ideal departure and arrival times, airlines and total journey duration. You can also sort results by 'Cheapest,' 'Best' or 'Fastest' flights from Porto Airport to Grenoble-Isere Airport.

Handy information about Porto Airport (OPO)

  • 74.49% of flights departing from Porto Airport land at their destination on time.

  • To reach Porto Airport from central Porto, it'll take around 20 minutes if you're going by car. Of course, this depends on traffic conditions. It's approximately 16 kilometres from the airport to the city centre.

  • The trip when using public transport takes roughly 50 minutes.

  • Catching an early flight from Porto Airport to Grenoble-Isere Airport? Avoid the stress of rushing to the terminal (and catch some extra z's) by picking one of these hotels near OPO:

Arriving at Grenoble-Isere Airport (GNB)

Getting from Grenoble-Isere Airport (GNB) to central Grenoble

  • Grenoble-Isere Airport is roughly 48 kilometres from the centre of Grenoble. Driving there takes about 35 minutes.

When to fly to Grenoble-Isere Airport (GNB)

  • March is the busiest month for flights from Porto Airport to Grenoble-Isere Airport. To escape the crowds, visit Grenoble in June.

  • When reserving your flight from Porto Airport to Grenoble-Isere Airport, think about the type of weather you enjoy. July is the warmest month in Grenoble, with the temperature ranging from 12ºC to 29ºC.

  • If you like cooler conditions, search for a cheap ticket from OPO to GNB in January. Average temperatures are between -6ºC and 8ºC then.

Explore more of France

  • Paris is just one of the many places in France waiting to be explored after you've experienced Grenoble. Around 483 kilometres away to the north-west, its best attractions include Eiffel Tower, Louvre Museum and Cathédrale Notre-Dame de Paris.

  • If you're looking to explore another great destination in France, consider Marseille, roughly 209 kilometres south of Grenoble. Old Port of Marseille, Le Panier and Cathédrale La Major are key highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.