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Chiang Mai

$381+ 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 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CNX
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$847
(Ovago)

One-way from

$381
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,013
Provider with most accurate pricing for Chicago (CHI)-Chiang Mai flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Chiang Mai flights.
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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. 25% potential increase in price ($456 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($74 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 30, 2025.

This FlightHub deal was found by Cheapflights users on 10/28. 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 11/411:30 pmORD - CNX
2 stops29h 25mEVA Air
Thu 12/411:50 amCNX - ORD
1 stop20h 45mEVA Air
Deal found 10/28$944
This FlightHub deal was found by Cheapflights users on 10/30. 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 11/511:30 pmORD - CNX
2 stops46h 50mEVA Air
Tue 11/1811:50 amCNX - ORD
1 stop20h 45mEVA Air
Deal found 10/30$945
This oojo deal was found by Cheapflights users on 10/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1111:30 pmORD - CNX
1 stop22h 05mEVA Air
Tue 11/2511:50 amCNX - ORD
1 stop20h 45mEVA Air
Deal found 10/28$973
This oojo deal was found by Cheapflights users on 10/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/411:30 pmORD - CNX
2 stops29h 25mMultiple Airlines
Thu 12/49:25 amCNX - ORD
2 stops23h 10mMultiple Airlines
Deal found 10/28$1,005
This SmartFares deal was found by Cheapflights users on 10/28. 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.
Sat 11/226:00 amORD - CNX
2 stops39h 35mMultiple Airlines
Mon 12/229:40 pmCNX - ORD
2 stops34h 55mMultiple Airlines
Deal found 10/28$1,049
This FlightHub deal was found by Cheapflights users on 10/28. 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 11/511:30 pmORD - CNX
2 stops46h 50mEVA Air
Sun 11/1611:50 amCNX - ORD
1 stop20h 45mEVA Air
Deal found 10/28$1,054
This Delta deal was found by Cheapflights users on 10/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/145:13 pmMDW - CNX
2 stops40h 42mDelta
Sat 12/2012:15 amCNX - MDW
2 stops24h 43mDelta
Deal found 10/30$2,427
This Delta deal was found by Cheapflights users on 10/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:00 amMDW - CNX
2 stops27h 55mDelta
Fri 11/2812:15 amCNX - MDW
2 stops24h 37mDelta
Deal found 10/30$2,491
This Delta deal was found by Cheapflights users on 10/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:00 amMDW - CNX
2 stops27h 55mDelta
Fri 12/1912:15 amCNX - MDW
2 stops28h 03mDelta
Deal found 10/29$2,636
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/294:05 pmSTL - CNX
3 stops34h 40mMultiple Airlines
Wed 11/56:10 pmCNX - STL
2 stops34h 19mMultiple Airlines
Deal found 10/28$2,762
This Delta deal was found by Cheapflights users on 10/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/215:05 pmMDW - CNX
2 stops40h 50mDelta
Tue 1/612:15 amCNX - MDW
2 stops29h 16mDelta
Deal found 10/29$3,506
This Mytrip deal was found by Cheapflights users on 10/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/24:05 pmSTL - CNX
2 stops36h 45mMultiple Airlines
Tue 11/49:05 pmCNX - STL
3 stops32h 23mMultiple Airlines
Deal found 10/29$3,647

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 October 30, 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

Wed 1/21

2:35 pm-9:50 am

1 stop30h 15m

Chiang Mai

Wed 2/4

10:35 am-12:55 pm

1 stop39h 20m

$847

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Wed 1/21

4:25 pm-9:25 am

2 stops28h 00m

Chiang Mai

Wed 2/4

5:05 pm-7:20 am

2 stops27h 15m

$952

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Thu 1/22

11:30 pm-10:35 am

1 stop22h 05m

Chiang Mai

Tue 2/3

11:50 am-7:35 pm

1 stop20h 45m

$975

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Tue 1/20

11:30 pm-1:45 pm

2 stops25h 15m

Chiang Mai

Tue 1/27

9:40 pm-7:35 pm

2 stops34h 55m

$982

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Wed 1/21

7:05 am-10:55 pm

2 stops26h 50m

Chiang Mai

Tue 2/3

12:15 am-8:40 am

1 stop21h 25m

$1,106

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Thu 1/22

7:30 am-10:55 pm

2 stops26h 25m

Chiang Mai

Mon 2/2

12:15 am-11:53 pm

2 stops36h 38m

$1,116

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Tue 1/6

6:50 pm-9:25 am

2 stops25h 35m

Chiang Mai

Tue 3/10

12:10 pm-3:45 pm

2 stops39h 35m

$1,120

St. LouisChiang Mai

STL - CNX

STLCNX

Lambert-St Louis

Mon 1/12

2:50 pm-10:35 am

2 stops30h 45m

Chiang Mai

Sat 1/24

11:50 am-1:54 pm

2 stops39h 04m

$1,254

St. LouisChiang Mai

STL - CNX

STLCNX

Lambert-St Louis

Mon 1/12

11:05 am-9:25 am

3 stops33h 20m

Chiang Mai

Sat 1/24

9:40 pm-9:15 pm

3 stops36h 35m

$1,542

St. LouisChiang Mai

STL - CNX

STLCNX

Lambert-St Louis

Mon 1/12

7:10 am-10:55 pm

2 stops26h 45m

Chiang Mai

Fri 1/23

12:15 am-7:27 pm

2 stops32h 12m

$2,045

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 35 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, October is the cheapest month in which you can book a flight from Illinois to Chiang Mai (average of $849). Flying from Illinois to Chiang Mai in June is currently the most expensive (average of $1,578). 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 October 30, 2025.

A simple way to save on the total cost of your ticket is to fly from Illinois to Chiang Mai at noon. If you’re flexible enough to do this you can expect to save up to 56% on your trip compared to booking a flight in the afternoon.

How much does it cost to fly round-trip from Illinois to Chiang Mai?

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.

  • How long is the flight from Illinois to Chiang Mai?

    Cathay Pacific, EVA Air, and Qatar Airways can get you from Illinois to Chiang Mai in just under 22h 05m. Your travel time can differ by up to 11h 15m. There are 8211 mi between Illinois and Chiang Mai. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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, October is the cheapest month in which you can book a flight from Illinois to Chiang Mai (average of $849). Flying from Illinois to Chiang Mai in June is currently the most expensive (average of $1,578). 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

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Alternative routes for Illinois to Chiang Mai

See prices for flight routes from nearby airports that may be better suited for you.
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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$849Average$1,364FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$933Average$1,293FlexibilityNo cancel feeOn-time72%
Korean AirCheapest$959Average$1,301FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$974Average$1,440FlexibilityNo cancel feeOn-time74%

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