Porto OPO to Shannon SNN Flights

The flight from Porto to Shannon leaves at 6: 30AM. Plan your trip with the Journey Planner   from Omio.

Shannon is outside the Schengen Area. Travelers departing from Porto will need a valid passport and may require a visa depending on their nationality. Entry and visa requirements can be subject to change. For the latest information, check with your destination's embassy or consulate.

The best events to attend in Shannon include:

• Shannon International Airshow, a spectacular display of aviation excellence featuring thrilling aerial performances and military demonstrations
• Fleadh Cheoil na hÉireann, the largest traditional Irish music festival celebrating folk music and culture with competitions and performances
• Shannon Heritage's Medieval Banquet, an immersive dining experience that transports guests to the medieval era with food, entertainment, and storytelling.

The best holidays to experience in Shannon include:

• St. Patrick's Day, vibrant celebrations with parades and cultural festivities
• May Bank Holiday, pleasant weather perfect for outdoor activities and local events
• August Bank Holiday, lively atmosphere with various summer festivals and events.

The best seasons to visit Shannon are Spring or Summer. The best weather to explore Shannon is during May-June or September-October.

For international flights we recommend to arrive 2.5 to 3 hours before departure. Please check the website of your departure airport if in doubt. Some airports may offer booking time slots for security checks or offer additional information on when to get there based on time of day.

Most airlines permit carry-on bags that fit within specific dimensions (e. G. 22 x 14 x 9 inches or 56 x 36 x 23 cm), including handles and wheels. Bags must fit in the overhead bin or under the seat in front of you.

Many airlines impose weight limits, commonly ranging between 7 kg (15 lbs) and 12 kg (26 lbs).
Typically, passengers are allowed one carry-on bag and one personal item (for example a purse, laptop bag, or backpack). Personal items must fit under the seat in front of you.
Budget Airlines (like Ryanair or Wizz Air) have stricter size and weight limits, often requiring fees for larger carry-ons. Full-Service Airlines have more lenient policies, sometimes including more spacious dimensions or higher weight limits depending on your ticket class.

The list of items prohibited on an airplane varies by country and airline, but in general, the following items are not allowed in carry-on or checked baggage: Weapons and self-defence items, sharp objects, flammable materials, explosives, toxic substances, or liquids over 100ml (except for medications and baby essentials). In checked baggage, firearms (without authorization), explosives, large lithium batteries, and hazardous chemicals are prohibited. Electronic cigarettes must be in carry-on bags, while alcohol and dry ice have restrictions. Always check with your airline for specific regulations.