App
Customer Support
MYR
Find Bookings
Trip.com
>
Flights
>
Flights to Mongolia
>
Flights to Ulaanbaatar
>
Flights from St. Louis to Ulaanbaatar
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 St. Louis to Ulaanbaatar Starting at MYR 3,262

For as little as MYR 3,262, you can take your next adventure to Ulaanbaatar without breaking the bank. Choose between one-way and return tickets from St. Louis below.

  • One way
  • Round-trip
      • STL13:03
        42h 2m
        2 stops
        UBN21:05
        Sun, Feb 23|St. Louis - Ulaanbaatar|All Nippon Airways
        MYR 3,262MYR 7,587
        56% OFF
        56% OFF
        MYR 7,587MYR 3,262

        Choose All Nippon Airways flights from St. Louis to Ulaanbaatar. The one-way connecting flight with All Nippon Airways departs from St. Louis Lambert International Airport on Sun, Feb 23, arriving at New Ulaanbaatar International Airport. One-way Prices start from MYR 3,262 including taxes and charges.

      • STL09:00
        46h 5m
        2 stops
        UBN21:05
        Sun, Feb 23|St. Louis - Ulaanbaatar|United Airlines
        MYR 3,289MYR 7,587
        56% OFF
        56% OFF
        MYR 7,587MYR 3,289

        Choose United Airlines flights from St. Louis to Ulaanbaatar. The one-way connecting flight with United Airlines departs from St. Louis Lambert International Airport on Sun, Feb 23, arriving at New Ulaanbaatar International Airport. One-way Prices start from MYR 3,289 including taxes and charges.

      • STL07:00
        34h 35m
        2 stops
        UBN07:35
        Thu, Feb 20|St. Louis - Ulaanbaatar|United Airlines
        MYR 4,173MYR 7,587
        45% OFF
        45% OFF
        MYR 7,587MYR 4,173

        Choose United Airlines flights from St. Louis to Ulaanbaatar. The one-way connecting flight with United Airlines departs from St. Louis Lambert International Airport on Thu, Feb 20, arriving at New Ulaanbaatar International Airport. One-way Prices start from MYR 4,173 including taxes and charges.

      • STL07:00
        43h 5m
        2 stops
        UBN16:05
        Sun, Feb 23|St. Louis - Ulaanbaatar|Alaska Airlines
        MYR 4,249
        MYR 4,249

        Choose Alaska Airlines flights from St. Louis to Ulaanbaatar. The one-way connecting flight with Alaska Airlines departs from St. Louis Lambert International Airport on Sun, Feb 23, arriving at New Ulaanbaatar International Airport. One-way Prices start from MYR 4,249 including taxes and charges.

      • STL15:21
        45h 19m
        2 stops
        UBN02:40
        Thu, Feb 20|St. Louis - Ulaanbaatar|Alaska Airlines
        MYR 4,280
        MYR 4,280

        Choose Alaska Airlines flights from St. Louis to Ulaanbaatar. The one-way connecting flight with Alaska Airlines departs from St. Louis Lambert International Airport on Thu, Feb 20, arriving at New Ulaanbaatar International Airport. One-way Prices start from MYR 4,280 including taxes and charges.

      • STL17:36
        23h 59m
        2 stops
        UBN07:35
        Thu, Feb 20|St. Louis - Ulaanbaatar|Turkish Airlines
        MYR 4,387
        MYR 4,387

        Choose Turkish Airlines flights from St. Louis to Ulaanbaatar. The one-way connecting flight with Turkish Airlines departs from St. Louis Lambert International Airport on Thu, Feb 20, arriving at New Ulaanbaatar International Airport. One-way Prices start from MYR 4,387 including taxes and charges.

      • STL17:36
        23h 59m
        2 stops
        UBN07:35
        Sun, Feb 23|St. Louis - Ulaanbaatar|Turkish Airlines
        MYR 4,398
        MYR 4,398

        Choose Turkish Airlines flights from St. Louis to Ulaanbaatar. The one-way connecting flight with Turkish Airlines departs from St. Louis Lambert International Airport on Sun, Feb 23, arriving at New Ulaanbaatar International Airport. One-way Prices start from MYR 4,398 including taxes and charges.

      • STL07:04
        29h 36m
        2 stops
        UBN02:40
        Thu, Feb 20|St. Louis - Ulaanbaatar|American Airlines
        MYR 5,662
        MYR 5,662

        Choose American Airlines flights from St. Louis to Ulaanbaatar. The one-way connecting flight with American Airlines departs from St. Louis Lambert International Airport on Thu, Feb 20, arriving at New Ulaanbaatar International Airport. One-way Prices start from MYR 5,662 including taxes and charges.

      • STL06:00
        30h 40m
        2 stops
        UBN02:40
        Thu, Feb 20|St. Louis - Ulaanbaatar|Korean Air
        MYR 5,662
        MYR 5,662

        Choose Korean Air flights from St. Louis to Ulaanbaatar. The one-way connecting flight with Korean Air departs from St. Louis Lambert International Airport on Thu, Feb 20, arriving at New Ulaanbaatar International Airport. One-way Prices start from MYR 5,662 including taxes and charges.

      • STL06:00
        30h 40m
        2 stops
        UBN02:40
        Thu, Feb 20|St. Louis - Ulaanbaatar|Delta Air Lines
        MYR 5,695
        MYR 5,695

        Choose Delta Air Lines flights from St. Louis to Ulaanbaatar. The one-way connecting flight with Delta Air Lines departs from St. Louis Lambert International Airport on Thu, Feb 20, arriving at New Ulaanbaatar International Airport. One-way Prices start from MYR 5,695 including taxes and charges.

      • STL01:00 pm
        3h 5m
        Nonstop
        ULN02:00 pm
        Sat, Feb 22|St. Louis - Ulaanbaatar|All Nippon Airways
        Find More Flights
        Find More Flights

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

St. Louis to Ulaanbaatar flight time & flight schedules

Flight info.
Departure
Arrival
Weekly Schedule

  1. AA2261

    American Airlines

    05:15

    STL

    1.9h

    07:09

    DFW

    SMTWTFS
    Search

  2. KE032

    Korean Air

    11:55

    DFW

    14.8h

    16:40

    ICN

    SMTWTFS

  3. OM308

    Miat Mongolian Airlines

    00:05

    ICN

    3.7h

    02:45

    UBN

    -M--TF-

  4. DL1524

    Delta Air Lines

    06:00

    STL

    1.8h

    08:45

    ATL

    SMTWTFS
    Search

  5. KE5040

    Korean Air

    09:45

    ATL

    15.4h

    14:10

    ICN

    SMTWTFS

  6. OM308

    Miat Mongolian Airlines

    00:05

    ICN

    3.7h

    02:45

    UBN

    -M--TF-

  7. KE3735

    Korean Air

    06:00

    STL

    1.6h

    08:38

    ATL

    SMTWTFS
    Search

  8. KE5040

    Korean Air

    09:45

    ATL

    15.4h

    14:10

    ICN

    SMTWTFS

  9. OM308

    Miat Mongolian Airlines

    00:05

    ICN

    3.7h

    02:45

    UBN

    -M--TF-

  10. DL1626

    Delta Air Lines

    06:45

    STL

    1.6h

    09:22

    DTW

    SMTWTFS
    Search

  11. KE7274

    Korean Air

    12:45

    DTW

    14.7h

    16:25

    ICN

    SMTWTFS

  12. KE197

    Korean Air

    08:10

    ICN

    3.7h

    10:50

    UBN

    S-TWTFS

  13. AS504

    Alaska Airlines

    07:00

    STL

    4.3h

    09:17

    SEA

    SMTWTFS
    Search

  14. OZ271

    Asiana Airlines

    14:05

    SEA

    11.7h

    17:45

    ICN

    SMTWTFS

  15. OM308

    Miat Mongolian Airlines

    00:05

    ICN

    3.7h

    02:45

    UBN

    -M--TF-

  16. AA537

    American Airlines

    07:04

    STL

    2.2h

    09:14

    DFW

    SMTWTFS
    Search

  17. KE032

    Korean Air

    11:55

    DFW

    14.8h

    16:40

    ICN

    SMTWTFS

  18. OM308

    Miat Mongolian Airlines

    00:05

    ICN

    3.7h

    02:45

    UBN

    -M--TF-

  19. UA3564

    United Airlines

    07:05

    STL

    2.5h

    10:34

    EWR

    SMTWTFS
    Search

  20. TK002

    Turkish Airlines

    19:50

    JFK

    10.1h

    12:55

    IST

    SMTWTFS

  21. TK236

    Turkish Airlines

    18:15

    IST

    8.1h

    07:20

    UBN

    S-T-T--

  22. LH449

    Lufthansa

    15:30

    STL

    8.9h

    07:25

    FRA

    --T-T-S
    Search

  23. LH712

    Lufthansa

    15:30

    FRA

    11.4h

    09:55

    ICN

    S-T-T--

  24. OM302

    Miat Mongolian Airlines

    14:20

    ICN

    3.7h

    17:00

    UBN

    S-TWTFS

  25. TK9564

    Turkish Airlines

    15:43

    STL

    1.4h

    17:04

    ORD

    SMTWTFS
    Search

  26. TK006

    Turkish Airlines

    19:50

    ORD

    10.8h

    14:40

    IST

    SMTWTFS

  27. TK236

    Turkish Airlines

    18:15

    IST

    8.1h

    07:20

    UBN

    S-T-T--

  28. KE7034

    Korean Air

    19:10

    STL

    1.7h

    21:50

    ATL

    SMTWTFS
    Search

  29. KE5036

    Korean Air

    23:35

    ATL

    15.4h

    04:00

    ICN

    SMTWTFS

  30. OM302

    Miat Mongolian Airlines

    14:20

    ICN

    3.7h

    17:00

    UBN

    S-TWTFS
Find more flights and airlines

When is the cheapest time to fly from St. Louis to Ulaanbaatar?

Explore the best time to buy affordable tickets to Ulaanbaatar with our price trend chart, which predicts how flight prices will change in the coming weeks from previous data.

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

Frequently Asked Questions

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

    Airlines adjust prices for flights from St. Louis to Ulaanbaatar 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 do flights from St. Louis (STL) to Ulaanbaatar (ULN) cost?

    According to Trip.com's data, the lowest price is around MYR 8,497.

  • What is the transportation method from the main airport to downtown in Ulaanbaatar?

    • The distance from New Ulaanbaatar International Airport to downtown is about 26 km, by taxi about 40 minutes.

  • How many airports are there in Ulaanbaatar (ULN)?

    There are 2 airport(s) near Ulaanbaatar (ULN): New Ulaanbaatar International Airport and Chinggis Khaan International Airport.

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

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 Info | St. Louis to Ulaanbaatar

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

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.