The cheapest times to fly from ORD to CEI are

  • January 8th to March 18th
  • August 20th to December 2nd (except the week of November 19th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from ORD to CEI is late September. Prices can be as high as $2570 for Sunday flights during mid December, or as low as $693 for Monday flights around late September.


When to Fly to Chiang Rai

Flying from Chicago, IL (ORD) to Chiang Rai (CEI) will usually cost between $838 to $1584 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late September with an average ticket price of $856. Due to high demand the most expensive time to fly is mid December, with an average price of $1969. Planning your trip to low-cost times can easily save you $1113 on economy flights and even more on first-class flights. Generally, any price below $1043 can be considered a good price for a round-trip ORD to CEI flight.

See below for a graph of average weekly prices for the ORD to CEI route. All prices are for round-trip tickets in USD.

ORD to CEI Flight Prices

Compared to other flights, the ORD to CEI flight is priced close to the average and costs about as much as the average flight leaving from Chicago. The average price per mile (for a direct flight) is $0.08, which is far below average.


Flight Prices by Day of the Week

Monday is usually the cheapest day to fly to CEI, and Tuesday the cheapest day to fly back into ORD. Sundays are the most expensive days to fly to Chiang Rai, and Saturdays are the most expensive days to return to Chicago. Selecting flights on the least expensive days could save you up to $205 (14%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Monday and returning a week later will cost an average of $1017. Return trip prices are from the CEI to ORD flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from ORD to CEI can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 15 hour 37 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from ORD to CEI while comparing.

Destination alternative #1: Chiang Mai International Airport (CNX) in Chiang Mai

  • 96 miles (154 km) away from CEI
  • Usually 17.83% less expensive than CEI
  • 1-layover flights available

See ORD to CNX flights

Destination alternative #2: Lampang Airport (LPT) in Lampang

  • 113 miles (182 km) away from CEI
  • Usually 1.25% less expensive than CEI
  • 2-layover flights available

See ORD to LPT flights


Flight Hacking ORD to CEI

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from ORD to CEI — but Champion Traveler does!

Hack #1: Bangkok (ORD > BKK > CEI)

  • Price for both tickets: $779
  • Average savings: $264 (25.31%)

See ORD to BKK flights

Hack #2: Phuket (ORD > HKT > CEI)

  • Price for both tickets: $954
  • Average savings: $90 (8.58%)

See ORD to HKT flights

Hack #3: Kuala Lumpur (ORD > KUL > CEI)

  • Price for both tickets: $965
  • Average savings: $78 (7.48%)

See ORD to KUL flights


Flight Questions Answered

Still have questions about flying from ORD to CEI? We’ve got answers.

Which airlines fly this route?

You can find 21 major airlines flying this route most often: Air India, ANA, Austrian, Bangkok Airways, Cathay Pacific, China Airlines, China Eastern, Emirates, Etihad, EVA Air, Hainan, JAL, KLM, Qantas, Qatar Airways, SAS, Sichuan Airlines, SWISS, THAI, Turkish Airlines, United, and potentially more during busy seasons.

How far away is it from Chiang Rai Airport to Chicago O’Hare International Airport?

The distance between the two airports is roughly 8132 miles or 13087 kilometers.

How long does it take to fly from ORD to CEI?

The real-world flight time for a nonstop ORD to CEI flight is about 15 hour 37 minutes.

How many flights go between Chicago, IL and Chiang Rai?

It depends on the day of the week and the date, but a typical day might have around 12 available flights from ORD to CEI.


Airport Location Info


Departing Airport

Origination code ORD
Origination airport name Chicago O’Hare International Airport
City Chicago, IL
Country the United States
Latitude 42
Longitude -87.9

Return Airport

Destination code CEI
Destination airport name Chiang Rai Airport
City Chiang Rai
Country Thailand
Latitude 19.9
Longitude 99.8


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.