Cheap Flights from Chicago to Phnom Penh from $478

Frequently Asked Questions

• What are the cheapest flights from Chicago to Phnom Penh (CHI-KTI)?

  Based on Trip.com data, Cathay Pacific offers one-way fares as low as $478 on Cheapest nonstop routes (e.g. ORD to KTI on Tue, Aug 11), while Cathay Pacific offers Cheapest nonstop round-trips from $903 departing on Thu, Sep 10 and returning on Thu, Sep 17.

• Which airlines offer direct flights from Chicago to Phnom Penh?

  At the moment, you can catch a nonstop flight from Chicago to Phnom Penh with the following airlines, including: American Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• When is the best time to book flights from Chicago to Phnom Penh?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Chicago to Phnom Penh is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How can I find the best deals on flights from Chicago to Phnom Penh?

  To find best deals on flights from Chicago to Phnom Penh, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Tue, Aug 11, with one-way flights priced at just $478.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Cathay Pacific.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Phnom Penh travel is around December.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Chicago (CHI) to Phnom Penh (KTI) the cheapest?

  The cheapest months to fly from Chicago to Phnom Penh is November, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Chicago to Phnom Penh on?

  After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Chicago to Phnom Penh on July 20, 2026 with Etihad Airways, with prices starting at $559.

• Which airports can I fly to for Phnom Penh from Chicago?

  You can land at any one of the following hubs in Phnom Penh, with O'Hare International Airport to Techo International Airport (ORD-KTI) is by far the most common option on this route: Phnom Penh International Airport (PNH) Techo International Airport (KTI).

• Is there any time difference between Chicago and Phnom Penh?

  The time difference between Phnom Penh and Chicago is 13h.

• How do I change or cancel my ticket from Chicago to Phnom Penh?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.