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Chiang Mai

$452+ Cheap flights from Illinois to Chiang Mai (CNX)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CNX
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from Illinois to Chiang Mai

Keep the following information in mind while searching for Illinois to Chiang Mai flight deals. Data was last updated August 14, 2025.

Round-trip from

$674
(Expedia)

One-way from

$452
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$1,222
From Illinois to Chiang Mai
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One-way flight from Illinois to Chiang Mai
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Highest demand for flights based on searches. 23% potential increase in price ($414 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($69 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Illinois to Chiang Mai

Cheapest flights from Illinois to Chiang Mai
Explore the most affordable flight options available from Illinois to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Expedia deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/85:45 pmORD - CNX
2 stops27h 35mMultiple Airlines
Mon 9/158:00 pmCNX - ORD
2 stops30h 55mMultiple Airlines
Deal found 8/14$674
This Travelocity deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/134:25 pmORD - CNX
2 stops32h 20mMultiple Airlines
Fri 11/2110:10 amCNX - ORD
2 stops34h 10mMultiple Airlines
Deal found 8/12$714
This Expedia deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/75:45 pmORD - CNX
2 stops27h 35mMultiple Airlines
Mon 9/158:00 pmCNX - ORD
2 stops30h 55mMultiple Airlines
Deal found 8/14$717
This Trip.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/124:25 pmORD - CNX
2 stops29h 55mMultiple Airlines
Sun 11/1610:10 amCNX - ORD
2 stops40h 40mMultiple Airlines
Deal found 8/13$719
This FlightHub deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/114:25 pmORD - CNX
2 stops28h 00mMultiple Airlines
Tue 11/257:45 pmCNX - ORD
2 stops24h 35mMultiple Airlines
Deal found 8/12$752
This Trip.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/285:45 pmORD - CNX
2 stops27h 35mMultiple Airlines
Sun 10/58:00 pmCNX - ORD
2 stops48h 40mMultiple Airlines
Deal found 8/14$757
This FlightHub deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/54:25 pmORD - CNX
2 stops28h 00mMultiple Airlines
Wed 11/127:45 pmCNX - ORD
2 stops24h 35mMultiple Airlines
Deal found 8/12$840
This Cathay Pacific deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/42:40 pmORD - CNX
1 stop39h 10mCathay Pacific
Sun 2/157:40 pmCNX - ORD
1 stop30h 20mCathay Pacific
Deal found 8/14$857
This Gurufare deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/42:40 pmORD - CNX
1 stop39h 10mCathay Pacific
Thu 11/1310:35 amCNX - ORD
1 stop39h 25mCathay Pacific
Deal found 8/14$865
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/122:40 pmORD - CNX
1 stop39h 10mCathay Pacific
Sun 11/1610:35 amCNX - ORD
1 stop39h 25mCathay Pacific
Deal found 8/13$905
This TeaFlight deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TeaFlight is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/164:00 pmORD - CNX
1 stop38h 40mCathay Pacific
Mon 9/297:25 pmCNX - ORD
1 stop31h 00mCathay Pacific
Deal found 8/13$908
This SmartFares deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:00 amSTL - CNX
2 stops29h 40mMultiple Airlines
Sat 10/412:45 amCNX - STL
2 stops35h 18mMultiple Airlines
Deal found 8/14$1,039

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Chiang Mai that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
Use the filters below to find and compare flights from Illinois to Chiang Mai that are best for you.

Fly from

Illinois

Fly to

Chiang Mai

Route

Depart

Return

Price

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Mon 9/8

5:45 pm-9:20 am

2 stops27h 35m

Chiang Mai

Mon 9/15

8:00 pm-2:55 pm

2 stops30h 55m

$674

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Sun 9/7

5:45 pm-9:20 am

2 stops27h 35m

Chiang Mai

Mon 9/15

8:00 pm-2:55 pm

2 stops30h 55m

$717

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Wed 11/12

4:25 pm-11:20 am

2 stops29h 55m

Chiang Mai

Sun 11/16

10:10 am-1:50 pm

2 stops40h 40m

$719

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Tue 11/11

4:25 pm-9:25 am

2 stops28h 00m

Chiang Mai

Tue 11/25

7:45 pm-7:20 am

2 stops24h 35m

$752

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Wed 11/5

4:25 pm-9:25 am

2 stops28h 00m

Chiang Mai

Wed 11/12

7:45 pm-7:20 am

2 stops24h 35m

$840

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Tue 11/4

2:40 pm-6:50 pm

1 stop39h 10m

Chiang Mai

Tue 2/17

10:35 am-1:00 pm

1 stop39h 25m

$857

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Tue 11/4

2:40 pm-6:50 pm

1 stop39h 10m

Chiang Mai

Sun 2/15

7:40 pm-1:00 pm

1 stop30h 20m

$857

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Tue 11/4

2:40 pm-6:50 pm

1 stop39h 10m

Chiang Mai

Mon 2/16

7:40 pm-1:00 pm

1 stop30h 20m

$857

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Tue 11/4

2:40 pm-6:50 pm

1 stop39h 10m

Chiang Mai

Thu 11/13

10:35 am-1:00 pm

1 stop39h 25m

$865

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Sun 9/28

11:25 am-9:50 am

2 stops34h 25m

Chiang Mai

Sun 10/5

5:20 pm-9:40 am

2 stops28h 20m

$867

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 42 results
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Best time to book a flight from Illinois to Chiang Mai

Have a flexible travel schedule? Discover the best time to fly to Chiang Mai from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Chiang Mai

What is the cheapest month to book a flight from Illinois to Chiang Mai?

Currently, September is the cheapest month in which you can book a flight from Illinois to Chiang Mai (average of $1,006). Flying from Illinois to Chiang Mai in December is currently the most expensive (average of $1,624). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to CNX?

Find hourly flight availability from Illinois to Chiang Mai. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Chiang Mai as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Chiang Mai. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Chiang Mai from Illinois?

    If you book a flight to Chiang Mai from Illinois, you will be flying to Chiang Mai, which is the city’s only airport. Chiang Mai (CNX) is located 1.9 mi from the center of Chiang Mai.

  • What are the most popular routes from Illinois to Chiang Mai?

    Most travelers choose Chicago O'Hare Intl - Chiang Mai, Lambert-St Louis - Chiang Mai or Chicago Midway - Chiang Mai when deciding on the best route from Illinois to Chiang Mai.

  • Can I find deals for flights from Illinois to Chiang Mai that include hotel bookings?

    Yes. In addition to deals on Illinois to Chiang Mai flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Chiang Mai?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Chiang Mai.

  • Can I find deals for business class flights from Illinois to Chiang Mai?

    Yes. Cheapflights offers flight deals from Illinois to Chiang Mai by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Chiang Mai?

    Currently, September is the cheapest month in which you can book a flight from Illinois to Chiang Mai (average of $1,006). Flying from Illinois to Chiang Mai in December is currently the most expensive (average of $1,624). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Illinois to Chiang Mai

Discover the top 4 airlines that operate flights from Illinois to Chiang Mai. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Cathay PacificCheapest$933Average$1,347FlexibilityNo cancel feeOn-time72%
Korean AirCheapest$965Average$1,276FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$982Average$1,442FlexibilityNo cancel feeOn-time74%
DeltaCheapest$1,059Average$1,374FlexibilityNo cancel feeOn-timeN/A

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