Thanks to current sale of a Star Alliance carrier Air China you can book probably the cheapest solution from Europe to remote Mongolia! At this moment you can book return flights with one layover in Beijing already for €343 incl. all taxes and checked bag. Look for flights from Geneva or Zurich to Ulaanbaatar. Flights require long layover on your inbound flight (from Zurich in both directions) you would have to accept. You can get up to 144h transit visa upon arrival in China. Looking for an unique less-visited destination and you can easily reach one of above cities do not miss this solution to explore Mongolia this spring..
If interested in this solution with Air China look for flights with latest return date from Mongolia back to Europe on 30th of May 2018. Blackout period around Easter Holidays. Max stay 3 months. Discount is valid for booking made by end of February. (or until sold out). Below you can refer to our booking samples from Geneva and Zurich to Ulaanbaatar.
Booking sample
Geneva - Ulaanbaatar from €343
Zurich - Ulaanbaatar from €398
Booking sample of cheap return flights from Switzerland to Mongolia from €343 here. You would depart from Geneva to Ulaanbaatar on Saturday, 12th of May. Your inbound flight from Mongolia back to Europe would take place on 27th of May 2018.