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Ulaanbaatar to Irkutsk flights in December 2026 from $137 UBN → IKT

Chinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)

For departures in December 2026, the cheapest return found recently is $230 with IrAero, 26 Dec – 17 Jan 2027, found 2 days ago. The cheapest one-way found recently is $137 with IrAero, 20 Dec, found 2 days ago.

Return

In December 2026, the cheapest return fare on each of 9 departure dates is usually $247 to $325. Across all 31 departure dates we hold on this route, it is usually $249 to $552. Of the 4 months with enough return fares to compare, 1 is usually cheaper than December 2026.

Cheapest return found recently

$230

26 Dec – 17 Jan 2027 · IrAero

Chinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)

out nonstop, back nonstop

found 2 days ago

See prices for these datesCheck today's price

It is also the cheapest return we hold, of any age.

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
26 Dec – 17 Jan 2027$230IrAeroout nonstop, back nonstopfound 2 days agoSee prices for these dates
29 Dec – 5 Jan 2027$235S7 Airlinesout nonstop, back nonstopfound 6 days agoSee prices for these dates
15 Dec – 22 Dec$247S7 Airlinesout nonstop, back nonstopfound 6 days agoSee prices for these dates
27 Dec – 17 Jan 2027$251IrAeroout nonstop, back nonstopfound 2 days agoSee prices for these dates
18 Dec – 21 Dec$281S7 Airlinesout nonstop, back nonstopfound 5 days agoSee prices for these dates

Every date we hold

9 departure dates

10 Dec – 14 Dec: $300, found 7 days ago11 Dec – 14 Dec: $439, found 2 days ago15 Dec – 22 Dec: $247, found 6 days ago18 Dec – 21 Dec: $281, found 5 days ago25 Dec – 3 Jan 2027: $325, found 7 days ago26 Dec – 17 Jan 2027: $230, found 2 days ago27 Dec – 17 Jan 2027: $251, found 2 days ago29 Dec – 5 Jan 2027: $235, found 6 days ago30 Dec – 2 Jan 2027: $576, found 5 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
10 Dec – 14 Dec$300IrAeroChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)out nonstop, back nonstopfound 7 days agoSee prices for these dates
11 Dec – 14 Dec$439MIAT Mongolian AirlinesChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)out 1 stop, back nonstopfound 2 days agoSee prices for these dates
15 Dec – 22 Dec$247S7 AirlinesChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)out nonstop, back nonstopfound 6 days agoSee prices for these dates
18 Dec – 21 Dec$281S7 AirlinesChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)out nonstop, back nonstopfound 5 days agoSee prices for these dates
25 Dec – 3 Jan 2027$325S7 AirlinesChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)out nonstop, back nonstopfound 7 days agoSee prices for these dates
26 Dec – 17 Jan 2027$230IrAeroChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)out nonstop, back nonstopfound 2 days agoSee prices for these dates
27 Dec – 17 Jan 2027$251IrAeroChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)out nonstop, back nonstopfound 2 days agoSee prices for these dates
29 Dec – 5 Jan 2027$235S7 AirlinesChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)out nonstop, back nonstopfound 6 days agoSee prices for these dates
30 Dec – 2 Jan 2027$576Air ChinaChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)out 1 stop, back 1 stopfound 5 days agoSee prices for these dates

Which month looks cheapest?

December 2026 is the cheapest month — from $230.

November 2026From $2607 departure dates17 Nov – 26 Nov · found 7 days agoSee prices for these datesEvery date in November 2026
December 2026From $230Cheapest seen9 departure dates26 Dec – 17 Jan 2027 · found 2 days agoSee prices for these dates
January 2027From $2346 departure dates19 Jan 2027 – 22 Jan 2027 · found 3 days agoSee prices for these datesEvery date in January 2027
February 2027From $2357 departure dates2 Feb 2027 – 26 Feb 2027 · found 6 days agoSee prices for these datesEvery date in February 2027
March 2027From $4541 departure date5 Mar 2027 – 6 Mar 2027 · found 5 days agoSee prices for these datesEvery date in March 2027
April 2027From $8631 departure date23 Apr 2027 – 26 Apr 2027 · found 3 days agoSee prices for these dates

One-way

In December 2026, the cheapest one-way fare on each of 13 departure dates is usually $143 to $157. Across all 60 departure dates we hold on this route, it is usually $143 to $263. Of the 8 months with enough one-way fares to compare, 3 are usually cheaper than December 2026.

Cheapest one-way found recently

$137

20 Dec · IrAero

Chinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)

nonstop

found 2 days ago

Open this tripCheck today's price

Cheapest we hold, of any age

$136

15 Dec · IrAero

Chinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)

nonstop

found 4 days ago

Open this tripCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
15 Dec$136IrAerononstopfound 4 days agoOpen this trip
20 Dec$137IrAerononstopfound 2 days agoOpen this trip
17 Dec$139IrAerononstopfound 4 days agoOpen this trip
18 Dec$143S7 Airlinesnonstopfound 4 days agoOpen this trip
29 Dec$143S7 Airlinesnonstopfound 2 days agoOpen this trip

Every date we hold

13 departure dates

3 Dec: $161, found 4 days ago5 Dec: $155, found 2 days ago12 Dec: $238, found 6 days ago15 Dec: $136, found 4 days ago17 Dec: $139, found 4 days ago18 Dec: $143, found 4 days ago20 Dec: $137, found 2 days ago24 Dec: $147, found 2 days ago25 Dec: $152, found 2 days ago26 Dec: $157, found 6 days ago27 Dec: $177, found 7 days ago29 Dec: $143, found 2 days ago31 Dec: $155, found 2 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
3 Dec$161IrAeroChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)nonstopfound 4 days agoOpen this trip
5 Dec$155IrAeroChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)nonstopfound 2 days agoOpen this trip
12 Dec$238IrAeroChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)nonstopfound 6 days agoOpen this trip
15 Dec$136IrAeroChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)nonstopfound 4 days agoOpen this trip
17 Dec$139IrAeroChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)nonstopfound 4 days agoOpen this trip
18 Dec$143S7 AirlinesChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)nonstopfound 4 days agoOpen this trip
20 Dec$137IrAeroChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)nonstopfound 2 days agoOpen this trip
24 Dec$147IrAeroChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)nonstopfound 2 days agoOpen this trip
25 Dec$152S7 AirlinesChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)nonstopfound 2 days agoOpen this trip
26 Dec$157IrAeroChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)nonstopfound 6 days agoOpen this trip
27 Dec$177IrAeroChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)nonstopfound 7 days agoOpen this trip
29 Dec$143S7 AirlinesChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)nonstopfound 2 days agoOpen this trip
31 Dec$155IrAeroChinggis Khaan International Airport (UBN) → Irkutsk International Airport (IKT)nonstopfound 2 days agoOpen this trip

Which month looks cheapest?

January 2027 is the cheapest month — from $96.

November 2026From $1373 departure dates17 Nov · found 2 days agoOpen this tripEvery date in November 2026
December 2026From $13613 departure dates15 Dec · found 4 days agoOpen this trip
January 2027From $96Cheapest seen13 departure dates14 Jan 2027 · found 2 days agoOpen this tripEvery date in January 2027
February 2027From $1425 departure dates12 Feb 2027 · found 3 days agoOpen this tripEvery date in February 2027
March 2027From $13414 departure dates23 Mar 2027 · found 2 days agoOpen this tripEvery date in March 2027
April 2027From $4223 departure dates20 Apr 2027 · found 2 days agoOpen this trip
May 2027From $4221 departure date4 May 2027 · found 2 days agoOpen this trip
June 2027From $4621 departure date3 Jun 2027 · found 7 days agoOpen this trip
July 2027From $4244 departure dates23 Jul 2027 · found 6 days agoOpen this trip
October 2027From $4393 departure dates10 Oct 2027 · found 2 days agoOpen this trip

Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work