Cheap Flights from Chicago to Tehran from $627

Frequently Asked Questions

• What are the cheapest flights from Chicago to Tehran (CHI-THR)?

  Based on Trip.com data, Qatar Airways offers one-way fares as low as $627 on Cheapest nonstop routes (e.g. ORD to IKA on Thu, Apr 16), while Turkish Airlines offers Cheapest nonstop round-trips from $1,056 departing on Fri, May 1 and returning on Fri, May 8.

• Which airlines offer flights from Chicago to Tehran?

  At the moment, several airlines serve connecting flights from Chicago to Tehran, including: Turkish Airlines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.

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

  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 Tehran 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 Tehran?

  To find best deals on flights from Chicago to Tehran, 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 Thu, Apr 16, with one-way flights priced at just $627.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Qatar Airways.
  · 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 Tehran travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Chicago (CHI) to Tehran (THR) the cheapest?

  The cheapest months to fly from Chicago to Tehran is September, when demand for travel is lower.

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

  After crunching the numbers on our April flight calendar, it's currently cheapest to fly from Chicago to Tehran on April 30, 2026 with Turkish Airlines, with prices starting at $1,056.

• Which airports can I fly to for Tehran from Chicago?

  You can land at any one of the following hubs in Tehran, with Chicago O'Hare International Airport to Imam Khomeini International Airport (ORD-IKA) is by far the most common option on this route: Imam Khomeini International Airport (IKA) Mehrabad International Airport (THR).

• Is there any time difference between Chicago and Tehran?

  The time difference between Tehran and Chicago is 9h.

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

  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.