Sydney is a vibrant city known for its iconic landmarks like the Sydney Opera House and Harbour Bridge. You can enjoy a mix of urban excitement and natural beauty with activities like harbor cruises, beach visits, and exploring the Royal Botanic Garden. The city offers a rich cultural scene, fantastic dining, and plenty of opportunities for outdoor adventures.
Cheapest option at 673 euros with a reasonable 32-hour total travel time. Breeze Airways to LAX then Qantas to Sydney offers a decent balance of price and duration, but beware the long 9-hour layover in LAX which might test your patience.

Melbourne is a vibrant city known for its artistic culture, diverse culinary scene, and beautiful urban parks. It's a great place to explore trendy neighborhoods, enjoy world-class coffee, and experience lively street art. The city's blend of historic and modern architecture offers a unique backdrop for your adventures.
Cheapest flight at 41 euros with the shortest duration of 90 minutes, direct from Sydney to Melbourne Avalon. Great value for money and quick trip, perfect for a budget-conscious traveler who values speed. The only downside is landing at Avalon airport, which is a bit farther from Melbourne city center compared to Tullamarine.
Brisbane is a vibrant city known for its warm climate, outdoor lifestyle, and proximity to stunning natural attractions like the Gold Coast and Sunshine Coast. It's a great spot to enjoy cultural experiences, riverside dining, and urban parks. The city offers a relaxed yet lively atmosphere, perfect for unwinding after your adventures in San Diego and Sydney.
Good balance of price (€66) and convenience flying direct from Melbourne Tullamarine (MEL) to Brisbane with Jetstar. Flight duration is a solid 2 hours, no stops, making it practical and comfortable without breaking the bank.
Auckland, New Zealand, is a vibrant city known for its stunning harbors, lush green parks, and rich Maori culture. It's a perfect blend of urban excitement and natural beauty, offering activities like sailing, hiking, and exploring local markets. The city's friendly atmosphere and diverse culinary scene make it a must-visit destination on your itinerary.
Fastest flight at 190 minutes on Air New Zealand with a reasonable price of 220 euros. Great balance of speed and comfort on a reputable carrier, making it the top pick.
San Diego is famous for its world-renowned San Diego Zoo, a must-visit for animal lovers, offering an incredible variety of wildlife in a lush, expansive setting. Beyond the zoo, you can explore the beautiful Balboa Park, which houses museums, gardens, and cultural attractions just steps away. The city also boasts stunning coastal views and a vibrant downtown area, perfect for dining and entertainment after your zoo visit.
Best balance of price (€510) and shortest total travel time (16 hours). United Airlines offers a decent reputation and the layover in SFO is a manageable 2 hours, avoiding long waits or tight connections.
Best balance of price (€113) and total travel time (9 hours). JetBlue is a reliable carrier with a reasonable 2-hour layover at JFK, making this option comfortable and affordable without dragging you through a marathon layover.