Cheap flights from St. Louis to Ulaanbaatar from $622

Travelers frequently search for route combinations, such as St. Louis and Las Vegas, Cancún, Orlando, Los Angeles, San Francisco, Denver, Mexico City, Tuxtla Gutiérrez, Toronto, Ottawa, Lima, Buenos Aires, Cali, Sydney, Warsaw, San José, Washington, D.C., Reykjavik, Fort Lauderdale, Melbourne.

Travelers frequently search for route combinations, such as Ulaanbaatar and San Francisco, Portland, Los Angeles, Norfolk, Salt Lake City, New York, Boston, Miami, Istanbul, Taipei, Sydney, Mumbai, Tokyo, Beijing, Manila, Glasgow, Seoul, Santiago de Chile, Tashkent, Asheville.

The main airport in St. Louis is St. Louis Lambert International. It is also served by St. Louis Lambert International, Abraham Lincoln Capital, Evansville Regional, General Wayne A. Downing Peoria International, MidAmerica St. Louis, Columbia Regional, Central Illinois Regional, Cape Girardeau Regional, Quincy Regional, University of Illinois Willard.

Currently, you can fly between St. Louis and Ulaanbaatar with Korean Air, MIAT Mongolian Airlines, Alaska Airlines, Air China, Frontier Airlines.

If you don’t have specific dates for your trip between St. Louis and Ulaanbaatar, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Traveling between St. Louis and Ulaanbaatar, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What’s more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

There are a number of airports in and around St. Louis. The main one is St. Louis Lambert International and other nearby airports include St. Louis Lambert International, Abraham Lincoln Capital, Evansville Regional, General Wayne A. Downing Peoria International, MidAmerica St. Louis, Columbia Regional, Central Illinois Regional, Cape Girardeau Regional, Quincy Regional, University of Illinois Willard

This depends on the airline’s flight schedule. You can easily select your preferred departure time when you search on our website or mobile app. Choose the time of day you wish to depart from St. Louis, such as morning, afternoon, evening, or night, or select the exact hours for departure.

This depends on the airline’s flight schedule. You can easily select your preferred arrival time when you search on our website or mobile app. Choose the time of day you wish to arrive at Ulaanbaatar, such as morning, afternoon, evening, or night, or select the exact hours for arrival.