Cheap flights from Ulaanbaatar to Chicago from $1,074 UBN → ORD
Chinggis Khaan International Airport (UBN) → O'Hare International Airport (ORD)
The cheapest return found recently is $1,096 with Turkish Airlines, 22 Dec – 16 Feb 2027, found 2 days ago. The cheapest one-way found recently is $1,074 with MIAT Mongolian Airlines, 13 Aug 2027, found 6 days ago.
- Cheapest one-way found recently
- $1,074, found 6 days ago
- Cheapest return found recently
- $1,096, 22 Dec to 16 Feb 2027
- Usual return price
- $1,273 to $1,352
- Cheapest month to fly
- December 2026, return fares from $1,096 found in the last 7 days
Return
The cheapest return fare on each of 7 departure dates is usually $1,273 to $1,352.
Cheapest return found recently
$1,096
22 Dec – 16 Feb 2027 · Turkish Airlines
Chinggis Khaan International Airport (UBN) → O'Hare International Airport (ORD)
Leaves 9:15 a.m. · Return leaves 8:15 p.m. · 59 h 55 min of travel, both ways together
out 1 stop, back 1 stop · via Istanbul New Airport (IST) · overnight connection · 18 h connection
found 2 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$1,096 22 Dec – 16 Feb 2027found 2 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $1,080 to $1,250.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 7 departure dates from 22 Dec to 14 Jul 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 56-night return fares leaving within 3 days of 22 Dec to compare.
Every date we hold
16 fares on 7 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 22 Dec – 16 Feb 2027 | $1,096 | Turkish Airlines | Chinggis Khaan International Airport (UBN) → O'Hare International Airport (ORD) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 3 Jul 2027 – 8 Aug 2027 | $1,536 | MIAT Mongolian Airlines | Chinggis Khaan International Airport (UBN) → O'Hare International Airport (ORD) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 5 Jul 2027 – 9 Aug 2027 | $1,273 | MIAT Mongolian Airlines | Chinggis Khaan International Airport (UBN) → O'Hare International Airport (ORD) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 7 Jul 2027 – 11 Aug 2027 | $1,273 | MIAT Mongolian Airlines | Chinggis Khaan International Airport (UBN) → O'Hare International Airport (ORD) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 9 Jul 2027 – 14 Aug 2027 | $1,430 | MIAT Mongolian Airlines | Chinggis Khaan International Airport (UBN) → O'Hare International Airport (ORD) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 12 Jul 2027 – 16 Aug 2027 | $1,273 | MIAT Mongolian Airlines | Chinggis Khaan International Airport (UBN) → O'Hare International Airport (ORD) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 14 Jul 2027 – 20 Aug 2027 | $1,273 | MIAT Mongolian Airlines | Chinggis Khaan International Airport (UBN) → O'Hare International Airport (ORD) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
Which month looks cheapest?
December 2026 is the cheapest month — from $1,096.
Airlines on the cheapest dates: MIAT Mongolian Airlines, Turkish Airlines.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$1,074
13 Aug 2027 · MIAT Mongolian Airlines
Chinggis Khaan International Airport (UBN) → O'Hare International Airport (ORD)
Leaves 10:10 a.m. · 42 h 50 min trip
2 stops
found 6 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$1,074 13 Aug 2027found 6 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 12 days, 26 Sept to 11 Nov, the cheapest one-way we saw each day was $743 to $1,074.
At $1,074, the cheapest one-way found recently is at the high end of that range.
12 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 13 Aug 2027 to compare.
Every date we hold
1 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 13 Aug 2027 | $1,074 | MIAT Mongolian Airlines | Chinggis Khaan International Airport (UBN) → O'Hare International Airport (ORD) | 2 stops | found 6 days ago | Open this trip |
Airlines on the cheapest dates: MIAT Mongolian Airlines.
Premium cabin fares from Ulaanbaatar to Chicago
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 22 Dec – 16 Feb 2027 in another cabin: Premium economy · Business · First
Today's prices for 13 Aug 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Ulaanbaatar to Chicago?
Return
Fares 30 to 59 days before departure were typically 28% lower than 7 to 13 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 7–13 days | $1,524 | $1,135 | +39% | 7 |
| 30–59 days | $1,097 | $1,090 | Cheapest seen | 26 |
| 60–89 days | $1,109 | $1,080 | +1% | 36 |
| 90–179 days | $1,602 | $1,473 | +46% | 7 |
| 180+ days | $1,273 | $1,250 | +16% | 21 |
One-way
Not enough history yet: in 12 days of one-way prices, 26 Sept to 11 Nov, fewer than 3 booking ranges had prices on 7 days or more.
Live price for these dates
The cheapest return found recently is for 22 Dec – 16 Feb 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Ulaanbaatar to Chicago?
The cheapest return found recently is $1,096 with Turkish Airlines, 22 Dec to 16 Feb 2027, found 2 days ago. The cheapest return fare on each of 7 departure dates is usually $1,273 to $1,352.
How much is a one-way flight from Ulaanbaatar to Chicago?
The cheapest one-way found recently is $1,074 with MIAT Mongolian Airlines, 13 Aug 2027, found 6 days ago.
What is the cheapest month to fly from Ulaanbaatar to Chicago?
December 2026 is the cheapest month for a return, from $1,096, 22 Dec to 16 Feb 2027, found 2 days ago.
How far ahead should I book a flight from Ulaanbaatar to Chicago?
In 49 days of prices between 24 Sept and 11 Nov, return fares 30 to 59 days before departure were typically 28% lower than 7 to 13 days before departure.
How long is the flight from Ulaanbaatar to Chicago?
The cheapest one-way found recently, with MIAT Mongolian Airlines on 13 Aug 2027, takes 42 h 50 min with 2 stops.
Which airlines have the cheapest flights from Ulaanbaatar to Chicago?
Between 22 Dec and 14 Jul 2027, MIAT Mongolian Airlines has the cheapest return on 6 of the 7 departure dates we hold, and Turkish Airlines on 1.
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