Iran is proving to be an increasingly popular destination and experiencing growing passenger numbers from around the world. Total international arrivals were up 2.7% in 2017and is forecast to rise by 7.4% in 2018. Sustaining an upward path since 2013 (+ 2.7%), 2014 (+24.8%) and 2015 (+12.7%), 2016 (+18.3%). Iran with 22 UNESCO-registered world heritage sites is the 11th country with the most UNESCO heritages sites. The country plans to host 20 million tourists a year by 2025.

Based on Telegraph posts on June 2017, Iran is the first country among the world’s 20 cheapest countries to visit.
https://www.telegraph.co.uk/travel/galleries/cheapest-countries-to-visit/iran/

Generally, you run into 3 kinds of tour options when traveling to Iran.

A private tour is run exclusively for you, your own families or friends with no other strangers.
In particular, you will benefit from the following advantages.

Small group tours with guaranteed departure dates are best for those who are eager to see the most popular sights in Iran at a comparatively low price. What could travelers get from the small group tour? A favorable price is only a small part of it. Let’s see more details as follows.

You can make decisions easier by outsourcing it to a tour group, guided tours won’t give you with the same experience as going it alone. Here’s how to decide the best approach for you.
Independent travel, for many people, is more than just a hobby or a holiday activity – it’s a fundamentally life-changing experience. Whether it’s taking a gap year, heading off on a mid-20s career break or even taking off round the world once you have retired, traveling independently to Iran gives you a chance to take some time out from “normal” life, see the country differently and enjoy some incredible experiences. Unfortunately hotel reservation, booking internal tickets may not be possible to handle without the help of the local travel agencies.
Iran has this potential to match the expectations of all range of people with different styles, demands an desires, whether if you are a solo traveler, backpacker, family with kids, young boy or girls, elder traveler or person with mobility impairments. Iran is one of the most welcoming countries in the world.