App
Customer Support
AUD
Find Bookings
Worldwide Coverage
Worldwide Coverage
Flights to over 5,000 cities
One-stop Service Guarantee
One-stop Service Guarantee
Price guaranteed upon confirmed payment, booking guaranteed once tickets issued
Secure Payment
Secure Payment
Convenient & reliable booking and payment system

Cheap Flight Deals from Ulaanbaatar to St. Louis

Discover our range of affordable one-way and round-trip flights from Ulaanbaatar to St. Louis and kick-start your next adventure today!

  • One way
  • Return
      • UBN07:45
        44h 21m
        2 stops
        STL15:06
        Fri, Mar 21|Ulaanbaatar - St. Louis|Miat Mongolian Airlines
        AU$ 1,406AU$ 2,725
        48% OFF
        48% OFF
        AU$ 2,725AU$ 1,406

        Choose Miat Mongolian Airlines flights from Ulaanbaatar to St. Louis. The one-way connecting flight with Miat Mongolian Airlines departs from New Ulaanbaatar International Airport on Fri, Mar 21, arriving at St. Louis Lambert International Airport. One-way Prices start from AU$ 1,406 including taxes and charges.

      • UBN11:50
        36h 5m
        2 stops
        STL10:55
        Fri, Mar 21|Ulaanbaatar - St. Louis|Air China
        AU$ 1,442AU$ 2,725
        47% OFF
        47% OFF
        AU$ 2,725AU$ 1,442

        Choose Air China flights from Ulaanbaatar to St. Louis. The one-way connecting flight with Air China departs from New Ulaanbaatar International Airport on Fri, Mar 21, arriving at St. Louis Lambert International Airport. One-way Prices start from AU$ 1,442 including taxes and charges.

      • UBN12:25
        39h 41m
        2 stops
        STL15:06
        Fri, Mar 21|Ulaanbaatar - St. Louis|Korean Air
        AU$ 1,509AU$ 2,725
        45% OFF
        45% OFF
        AU$ 2,725AU$ 1,509

        Choose Korean Air flights from Ulaanbaatar to St. Louis. The one-way connecting flight with Korean Air departs from New Ulaanbaatar International Airport on Fri, Mar 21, arriving at St. Louis Lambert International Airport. One-way Prices start from AU$ 1,509 including taxes and charges.

      • UBN12:25
        35h 30m
        2 stops
        STL10:55
        Fri, Mar 21|Ulaanbaatar - St. Louis|Delta Air Lines
        AU$ 1,835
        AU$ 1,835

        Choose Delta Air Lines flights from Ulaanbaatar to St. Louis. The one-way connecting flight with Delta Air Lines departs from New Ulaanbaatar International Airport on Fri, Mar 21, arriving at St. Louis Lambert International Airport. One-way Prices start from AU$ 1,835 including taxes and charges.

      • UBN13:20
        34h 35m
        2 stops
        STL10:55
        Fri, Mar 21|Ulaanbaatar - St. Louis|Asiana Airlines
        AU$ 1,837
        AU$ 1,837

        Choose Asiana Airlines flights from Ulaanbaatar to St. Louis. The one-way connecting flight with Asiana Airlines departs from New Ulaanbaatar International Airport on Fri, Mar 21, arriving at St. Louis Lambert International Airport. One-way Prices start from AU$ 1,837 including taxes and charges.

      • UBN06:45
        53h 47m
        2 stops
        STL23:32
        Fri, Mar 21|Ulaanbaatar - St. Louis|Cathay Pacific
        AU$ 2,098
        AU$ 2,098

        Choose Cathay Pacific flights from Ulaanbaatar to St. Louis. The one-way connecting flight with Cathay Pacific departs from New Ulaanbaatar International Airport on Fri, Mar 21, arriving at St. Louis Lambert International Airport. One-way Prices start from AU$ 2,098 including taxes and charges.

      • ULN01:00 pm
        3h 5m
        Nonstop
        STL02:00 pm
        Sat, Feb 22|Ulaanbaatar - St. Louis|Miat Mongolian Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Ulaanbaatar to St. Louis Flight Time

Flight info.
Departure
Arrival
Weekly Schedule

  1. OM301

    Miat Mongolian Airlines

    08:40

    UBN

    3.2h

    12:50

    ICN

    S-TWTFS
    Search

  2. AC062

    Air Canada

    19:05

    ICN

    13.4h

    19:30

    YYZ

    SMTWTFS

  3. AC8969

    Air Canada

    13:40

    YYZ

    2.1h

    14:49

    STL

    SMTWTFS

  4. CA902

    Air China

    11:50

    UBN

    2.1h

    13:55

    PEK

    SMTWTFS
    Search

  5. CA981

    Air China

    19:35

    PEK

    15.5h

    23:05

    JFK

    S-T-TFS

  6. UA3610

    United Airlines

    09:01

    EWR

    3.1h

    11:08

    STL

    SMTWTFS

  7. KE198

    Korean Air

    13:00

    UBN

    3.2h

    17:10

    ICN

    S-TWTFS
    Search

  8. AC062

    Air Canada

    19:05

    ICN

    13.4h

    19:30

    YYZ

    SMTWTFS

  9. AC8969

    Air Canada

    13:40

    YYZ

    2.1h

    14:49

    STL

    SMTWTFS

  10. DL7886

    Delta Air Lines

    13:00

    UBN

    3.2h

    17:10

    ICN

    S-TWTFS
    Search

  11. DL7843

    Delta Air Lines

    19:30

    ICN

    14.5h

    21:00

    JFK

    SMTWTFS

  12. UA3610

    United Airlines

    09:01

    EWR

    3.1h

    11:08

    STL

    SMTWTFS

  13. OZ568

    Asiana Airlines

    13:20

    UBN

    3.3h

    17:35

    ICN

    S-T-T--
    Search

  14. DL7843

    Delta Air Lines

    19:30

    ICN

    14.5h

    21:00

    JFK

    SMTWTFS

  15. UA3610

    United Airlines

    09:01

    EWR

    3.1h

    11:08

    STL

    SMTWTFS
Find more flights and airlines

Best Time to Book Flights from Ulaanbaatar to St. Louis

Price trend charts are a great way of tracking how much your flights cost in the lead up to departure and can help you choose when to book your tickets. See how prices to St. Louis from Ulaanbaatar have changed and are set to move below.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

FAQ

  • When are flight from Ulaanbaatar (ULN) to St. Louis (STL) the cheapest?

    Airlines adjust prices for flights from Ulaanbaatar to St. Louis based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much are flights from Ulaanbaatar (ULN) to St. Louis (STL) cost?

    According to Trip.com's data, the lowest price is around AU$ 2,147.

  • What is the transportation method from the main airport to downtown in St. Louis?

    • The distance from St. Louis Lambert International Airport to downtown is about 20km, by taxi about 40 minutes.

  • How many airports in St. Louis (STL)?

    There are 1 airport(s) in St. Louis (STL): St. Louis Lambert International Airport.

How to find a cheap flight from Ulaanbaatar to St. Louis

If you don’t know some of the key things to look out for when buying flight tickets, prices can often end up sky high or, worse, sold out! We’ve carefully compiled our six most important steps to help ensure you’re getting the best deals when planning your next journey.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Information from Ulaanbaatar to St. Louis

Off-season for travelFebruary
Peak season for travelJanuary
Flight distance10,255.88km

Contact Us

About

Other Services

Payment Methods
Our Partners
Copyright © 2025 Trip.com Travel Singapore Pte. Ltd. All rights reserved
Site Operator: Trip.com Travel Singapore Pte. Ltd.