$568 Find Cheap Flights from Chicago to Mongolia - Compare and Save

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Price, demand and travel trends for Chicago O'Hare Intl Airport to Mongolia flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What are the cheapest fares from Chicago O'Hare Intl Airport to Mongolia right now?

The cheapest fare from Chicago O'Hare Intl Airport to Mongolia in the last week was $1,121 round-trip, to Ulaanbaatar Chinggis Khaan (UBN).

What’s the cheapest month to fly from Chicago O'Hare Intl Airport to Mongolia?

March is the cheapest time of year to fly, with average fares of $994. Prices are highest in December, when average flight costs increase to around $1,826.

When is the best time to book flights from Chicago O'Hare Intl Airport to Mongolia?

Book your flights 26 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 35% compared to booking last-minute (within 2 weeks of departure).

Which airport in Mongolia is the cheapest to fly to from Chicago O'Hare Intl Airport?

All flights from Chicago O'Hare Intl Airport to Mongolia arrive at Ulaanbaatar Chinggis Khaan (UBN). On average, round-trip fares are around $1,503.

What’s the cheapest day to fly from Chicago O'Hare Intl Airport to Mongolia?

Monday tends to be the cheapest day to fly from Chicago O'Hare Intl Airport to Mongolia, while Wednesday is the most expensive. Fares run about 11% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Chicago O'Hare Intl Airport to Mongolia?

Data from the past 12 months shows it's cheapest to fly to Mongolia during the evening with average prices of $1,275. The night is the most expensive time to fly, with average prices of $2,066.

Key details for Chicago O'Hare Intl Airport to Mongolia flights

Low season

October

Cheapest flight

$568
Beat the crowds with an average 72% drop in travelers.
The most popular month to fly with an average 160% increase in travelers.
One-way flight from Chicago O'Hare Intl Airport to Ulaanbaatar

Your Chicago O'Hare Intl Airport to Mongolia flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Chicago O'Hare Intl Airport to Mongolia?

    Yes. Fares from Chicago O'Hare Intl Airport to Mongolia are low right now. As a rule of thumb, a round-trip under $1,280 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Chicago O'Hare Intl Airport to Mongolia?

    Over the past 12 months, round-trip fares from Chicago O'Hare Intl Airport to Mongolia have ranged from $1,280 to $1,828.

  • What airlines fly nonstop from Chicago O'Hare Intl Airport to Mongolia?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from Chicago O'Hare Intl Airport to Mongolia. However, Korean Air offers a one-stop option.

  • Which cabin classes are available on flights from Chicago O'Hare Intl Airport to Mongolia?

    On flights from Chicago O'Hare Intl Airport to Mongolia you can only book Economy Class.

Your guide to booking Chicago O'Hare Intl Airport to Mongolia flights

Get tips on when to book, when to fly and what to know before your trip.
  • If you can plan ahead, the sweet spot for booking your flight is 26 weeks before your trip. KAYAK data shows fares in this window are around 35% lower than last-minute bookings (made within 2 weeks of departure). Not ready to commit? Set a Price Alert and we'll let you know when prices change.
  • If your travel dates are flexible, book your trip for March when flights are typically cheapest and avoid December when prices are at their highest.
  • Flying on Monday is usually the cheapest. Flights on Wednesday cost about 11% more on average, so being flexible with your travel dates could help you save.
  • Start your trip in Ulaanbaatar, which is the most popular destination in Mongolia. From there, it's easy to continue on to other popular destinations such as Dalanzadgad, Darhan and Olgii.

Reviews of the top 3 airlines serving from Chicago to Mongolia

 
Need help choosing which airline to fly with from Chicago to Mongolia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.8
MIAT MongolianOverall score based on 19 reviews
7.2Entertainment
9.1Crew
8.0Food
8.3Comfort
8.9Boarding
Airline reviews

Crew and cabin were very good. Movies were mostly old or very old (wizard of oz, gone with the wind). Knee room is a bit short, but not horrible.

10.0 ExcellentDon, Jul 2026
Read more MIAT Mongolian reviews

Crew and cabin were very good. Movies were mostly old or very old (wizard of oz, gone with the wind). Knee room is a bit short, but not horrible.

It was great. I had an exit row seat so I had a ton of legroom. The service was good and the food was decent.

Aircraft used was a 10 year old 767 which is being maintained in excellent condition. Business class was very comfortable and reclined sufficiently to allow me to sleep. The crew were excellent and very attentive. The only two unfortunates were a) food quality, the beef was very tough and below the standard for business class service; and b) the onboard entertainment offered little for non-Mongolians. All around, I would gladly fly MIAT again.

The flight was on time and the aircraft new and well-maintained. Service was friendly and well carried out. Seating on the 737 MAX in business class was comfortable enough that I could doze off during the 4 hour flight. Arrival in Ulsan Baatar was on time and baggage delivered to the belt quickly. I was pleasantly surprised by the entire event and have no trouble recommending MIAT.

No entertainment display working whole flight it was like a veggie 😒

All was great on flight to Tokyo. The ROOM setup was very comfortable. Definitely will try to do again.

Flight was late boarding. United crew were not friendly and cordial unlike the ANA crew.

Cabin Crew was excellent. They took care of everything requested. Flight was good

The ROOM was great. We would love to have it on all of our flights. LOL

The pilot was kept warning about the weather terrifying us. The flight attendants were not warm or pleasant.

Flight was good and comfortable, even for long haul economy. No complaints.

Almost 6 hours of delay with over 12 gate changes. Flight was supposed to depart around 6 and instead depart after 12am. No accommodations were offered than some snacks closer to midnight when the crew was planning to throw away some snacks.

Everything was good may improve some alcohol drinks and amenities during fly

Wonderfully pleasant experience. Good meal and beverage selections. Professional air staff.

Wonderful. I love ANA airlines. It's the best so far. My first pick when I travel now.

I always travel on Turkish Airlines but seriously I am I am considering to change because this is not the first time that the flight attendant are rude and they dont help. I asked for cold water with ice 5 times and I got water with no ice and this is not the first time to ask for something and you dont get it. Also I noticed this behavior only towards people who are not turkish.

Istanbul to Lahore flight was less than standard for international business class cabins. Seat did not were not flat and it did not operate easily. I had to push buttons hard repeatedly to operate the seat. I was in 5A seat

My, Syed Zawar Hussein Shirazi frequently flyer membership number was not included on my boarding pass from O’Hare to Istanbul despite my reminder to the attendant at check in. Further she forgot to give me my boarding pass form Istanbul to Lahore and she needs to improve her customer service, please 🙏

Chicago to Istanbul was a much better experience than I expected since I’m more accustomed to Qatar Airways business class. The business lounge in the Istanbul airport was amazing - loved the lockers and phone charging stations, and the bathroom was a spa experience in itself. The onward leg from Istanbul to Karachi was utterly disappointing. Terrible plane, and I felt like I was in economy - the seats don’t come near to lying flat and the food was mediocre. What a sad downgrade - it isn’t as though the ticket on that leg was cheaper. So, on that front, there’s no contest with Qatar airways.

Second leg of Turkish Airline with Indigo is disaster for following reason. 1) You have to carry your cabin bags through ladder to boeing 777 because it was parked somewhere in parking lot and was not given a gate to board passengers and this seems to be people traveling to and fro from those flights and is not issue with flight itself. 2) I choose non vegetarian food on Turkish portal way ahead of checkin to entire trip, However the Indigo flight gave me random veg food saying they code veg food code from Turkish. 3) Indigo did not served any alcoholic beverages stating some weird reason which is non nonsensical. 4)Indigo have TV screens in front of you but it displays nothing except "Welcome Onboard" with annoying white black ground in dark flight. This is the most stupidest and annoying part because you are held hostage for 7 hours and only thing you could do is stare back at white screen which does not have entertainment package or even flight tracker. Such a shame.

During mid flight, try to get a flight attendant to help I couldn’t find one Otherwise, everything was perfect

The 2 agents on the check in counter were super nice , helpful and very polite. Boarding was like a 1 2 3, I would recommend Turkish airlines for your next trip.

7 stars hospitality and an excellent service by the Turkish Airline entire team. Somehow, our membership numbers for mileage points were not indicated on our boarding passes issued at O’Hare Airport by the Turkish Airlines check in desk. During transit in Istanbul, I brought to attention of customer service Turkish Airlines. Please have our mileage points posted to our membership account from O’Hare Chicago to Lahore for both my wife Kaukab Shirazi Thank you

Terrible boarding process, no proper line maintained even for business class, crews are not very attentive, business class food quality / variety / quantity have gone down, everything has become cheap.

Food quality and the overall service of the staff and significantly decreased. The flight was delayed at the Istanbul airport and the passengers were kept onboard for more than 3 hours. The staff didn’t kept the passengers informed and everyone was upset.

More options for your flight from Chicago to Mongolia

Complete your trip to Mongolia with a hotel stay or car rental