Hello! That's quite an exciting journey you've set out for yourself, exploring the unique charms of Baku, Bandar Abbas, and Urmia. Here's some travel guidance to make your trip as smooth as possible.

Best Time to Visit:
The best time to visit Baku in Azerbaijan is between April and June and from September to October, during the spring and fall seasons respectively. For Bandar Abbas in Iran, it's recommended to visit from late October to February when the weather is tolerable. As for Urmia, spring (April to June) and autumn (September to October) are the ideal times to enjoy the pleasant weather.

Route and Accessibility:
You can start your journey from Baku. There are many direct international flights to Baku's Heydar Aliyev International Airport. From Baku, you can take a flight to Bandar Abbas. From Bandar Abbas, you can either catch a flight or use a long-distance bus service to Urmia.

Accommodation and Booking:
All three cities have a good range of accommodations available, from budget to luxury hotels. It's highly recommended that you book hotels in advance, especially during peak season. Websites like Booking.com, Airbnb, and Agoda can be used for reservation.

Clothing and Essentials:
Pack light and breathable clothing for Baku and Bandar Abbas, bearing in mind that both countries are conservative so it's best to dress modestly. For Urmia, pack some warmer clothes as evenings can be quite cool. Don't forget to pack sunblock, a hat, and sunglasses to protect against the sun.

Health and Safety:
Always ensure you have travel insurance in case of any health emergencies. In Baku, avoid tap water. Iran is generally safe but check for any travel advisories before your visit. Be aware of local laws and respect them.

Local Etiquette and Respect:
In all these cities, it's important to respect local traditions and customs. Showing humility and avoiding public display of affection goes a long way in engaging with locals. In Iran, women are expected to wear a hijab in public.