good.flights

Cheap flights from Seoul to Ulaanbaatar

One-way from $153, found by travellers in the last 7 days. The live price is checked when you book.

Departure
Return
Prices for nearby dates
Mon, Dec 7$211Tue, Dec 8$164Wed, Dec 9Any priceThu, Dec 10$153Fri, Dec 11$236Sat, Dec 12$214Sun, Dec 13Any priceMon, Dec 14$213

Cheapest one-way tickets

Recent finds on different dates, for 1 adult. Booking opens on Aviasales, which shows baggage, fare rules and the live price.

Cheapest
$153
Jeju Air, flight 7C 5203Found yesterday, 1 adult
Check live price
11:30amSeoulThu, Dec 10
Travel time 3h 45m, nonstopICNUBN
2:15pmUlaanbaatarThu, Dec 10
$164
Jeju Air, flight 7C 5203Found 7 days ago, 1 adult
Check live price
11:30amSeoulTue, Dec 1
Travel time 3h 45m, nonstopICNUBN
2:15pmUlaanbaatarTue, Dec 1
$164
Jeju Air, flight 7C 5203Found yesterday, 1 adult
Check live price
11:30amSeoulTue, Dec 8
Travel time 3h 45m, nonstopICNUBN
2:15pmUlaanbaatarTue, Dec 8
$172
Jeju Air, flight 7C 5203Found today, 1 adult
Check live price
11:30amSeoulTue, Nov 24
Travel time 3h 45m, nonstopICNUBN
2:15pmUlaanbaatarTue, Nov 24
$172
Jeju Air, flight 7C 5203Found today, 1 adult
Check live price
11:30amSeoulTue, Dec 15
Travel time 3h 45m, nonstopICNUBN
2:15pmUlaanbaatarTue, Dec 15

Round trips

The cheapest return tickets found recently, price for the whole trip.

Plan the rest of the trip

  • Mobile data in MongoliaTravel eSIM from $5, installed before you fly.
    Compare plans
  • Getting from the airportTransfers and car hire in Ulaanbaatar, booked ahead at a fixed price.
    See options
  • Travel insuranceTravel insurance quotes for Mongolia from EKTA; check what each policy covers.
    Get a quote
  • Flight delayed?Delayed or cancelled? See which passenger rights cover this route.
    Check

Price calendar

The lowest one-way fare found for each day over the next 60 days. A dash means no recent fare; you can still pick that day.

October 2026

MoTuWeThFrSaSu12345678910111213141516171819202122232425–26$24727$24428$24529$23630$22531$236

November 2026

MoTuWeThFrSaSu1$2292–3$2244–5$2616$2967$2468$2449$30310$28011$24512–13$26314$24115$20416–17$18818–19$23620$23921$21522$23823$23724$17225$21026$23727$23928$21529$24130$239

December 2026

MoTuWeThFrSaSu1$1642–3–4–5–6–7$2118$1649–10$15311$23612$21413–14$21315$17216–17$21018$23619$23720$21521$24022$20423–2425262728293031
$213 or lessGreen: the cheapest fifth of fares on this route. Lowest in these 60 days: Dec 10, $153.

Lowest fares by month

In the fares found this week, December has the lowest: from $153 one-way, against $250 in July 2027. Pick a month to see its cheapest date.

  1. Oct$225
  2. Nov$172
  3. Dec$153
  4. Jan$195
  5. Feb$214
  6. Mar$188
  7. Apr$211
  8. Mayno fares yet
  9. Junno fares yet
  10. Jul$250
  11. Augno fares yet
  12. Sep$241
$0$100$200$300OctNov$153DecJanFebMarAprMayJunJulAugSep
Show as a table
MonthCheapest one-wayDateStops
October$225Fri, Oct 30Nonstop
November$172Tue, Nov 24Nonstop
December$153Thu, Dec 10Nonstop
January 2027$195Tue, Jan 5Nonstop
February 2027$214Mon, Feb 15Nonstop
March 2027$188Thu, Mar 11Nonstop
April 2027$211Sat, Apr 3Nonstop
May 2027—
June 2027—
July 2027$250Mon, Jul 26Nonstop
August 2027—
September 2027$241Wed, Sep 22Nonstop

Fares and weather by month

The lowest one-way fare found for each month, next to the weather in Ulaanbaatar. Average daily high and low and monthly precipitation.

Oct2026NovDecJan2027FebMarAprMayJunJulAugSep
Lowest fare$225$172$153$195$214$188$211––$250–$241
High °C8°-5°-14°-15°-9°-0°10°18°23°25°23°17°
Low °C-4°-15°-23°-26°-22°-13°-3°4°10°14°11°4°
Precipitation mm96423582247756528

Source: Ulaanbaatar on Wikipedia, CC BY-SA 4.0.

Questions travellers ask

What is the cheapest month to fly from Seoul to Ulaanbaatar?

In the fares found this week, December has the lowest: from $153 one-way, against $250 in July 2027.

What is the weather in Ulaanbaatar in December?

In December, the cheapest month to fly, the average daily high in Ulaanbaatar is -14 °C and the low -23 °C.

Are there direct flights from Seoul to Ulaanbaatar?

Yes. Recent fares include nonstop flights with Jeju Air, Korean Air, Asiana Airlines, Aero Mongolia and MIAT Mongolian Airlines.

How long is the flight from Seoul to Ulaanbaatar?

A nonstop flight takes about 3h. The distance is 1,217 mi.

Which day of the week is cheapest to fly?

In the fares we have, Tuesday departures are the cheapest, with a typical lowest fare of $200. Wednesday is the priciest at about $241.

More cheap flights from Seoul

All 434 destinations