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Chiang Mai

$423+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CNX
Jan 16 — Jan 231
Fri 1/16
Fri 1/23
1 adult, Economy
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Cheap 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 December 17, 2025.

This SmartFares deal was found by Cheapflights users on 12/16. 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.
Thu 12/2511:30 pmORD - CNX
1 stop22h 05mEVA Air
Tue 2/109:40 pmCNX - ORD
2 stops34h 55mEVA Air
Deal found 12/16$1,481
This oojo deal was found by Cheapflights users on 12/16. 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.
Fri 12/261:10 pmORD - CNX
1 stop27h 55mEtihad Airways
Thu 2/198:50 amCNX - ORD
1 stop35h 45mEtihad Airways
Deal found 12/16$1,593
This Gurufare deal was found by Cheapflights users on 12/16. 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.
Fri 12/2611:30 pmORD - CNX
1 stop22h 05mEVA Air
Thu 1/811:50 amCNX - ORD
1 stop20h 45mEVA Air
Deal found 12/16$1,686
This FlightHub deal was found by Cheapflights users on 12/15. 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.
Fri 12/2611:30 pmORD - CNX
2 stops46h 50mEVA Air
Thu 2/1912:10 pmCNX - ORD
2 stops44h 25mEVA Air
Deal found 12/15$1,827
This Mytrip deal was found by Cheapflights users on 12/16. 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.
Thu 12/253:55 pmORD - CNX
3 stops29h 30mMultiple Airlines
Tue 2/109:30 pmCNX - ORD
3 stops35h 05mMultiple Airlines
Deal found 12/16$1,832
This EVA Air deal was found by Cheapflights users on 12/16. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2611:30 pmORD - CNX
2 stops32h 30mMultiple Airlines
Thu 1/811:50 amCNX - ORD
1 stop20h 45mMultiple Airlines
Deal found 12/16$1,847
This FlightHub deal was found by Cheapflights users on 12/16. 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.
Fri 12/266:50 pmORD - CNX
2 stops25h 35mMultiple Airlines
Thu 2/199:40 pmCNX - ORD
2 stops53h 50mMultiple Airlines
Deal found 12/16$2,004
This Delta deal was found by Cheapflights users on 12/16. 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.
Fri 12/266:00 amMDW - CNX
2 stops27h 55mDelta
Wed 1/712:15 amCNX - MDW
2 stops34h 52mDelta
Deal found 12/16$2,935
This Delta deal was found by Cheapflights users on 12/15. 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.
Mon 12/225:05 pmMDW - CNX
2 stops40h 50mDelta
Mon 1/512:15 amCNX - MDW
2 stops29h 14mDelta
Deal found 12/15$3,042
This Delta deal was found by Cheapflights users on 12/15. 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 12/216:00 amMDW - CNX
2 stops27h 55mDelta
Tue 1/612:15 amCNX - MDW
2 stops29h 14mDelta
Deal found 12/15$3,152
This Delta deal was found by Cheapflights users on 12/15. 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 12/204:03 pmMDW - CNX
2 stops41h 52mDelta
Mon 1/512:15 amCNX - MDW
2 stops34h 52mDelta
Deal found 12/15$3,157
This Delta deal was found by Cheapflights users on 12/15. 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 12/243:29 pmMDW - CNX
2 stops42h 26mDelta
Sat 1/312:15 amCNX - MDW
2 stops24h 43mDelta
Deal found 12/15$3,715

Find 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 December 17, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$822
(oojo)

One-way from

$423
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$1,261
Provider with most accurate pricing for Chicago (CHI)-Chiang Mai flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Chiang Mai flights.
Search Deals
From Illinois to Chiang Mai
Search Deals
One-way flight from Illinois to Chiang Mai
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($469 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($75 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 17, 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

Thu 1/22

2:35 pm-6:50 pm

1 stop39h 15m

Chiang Mai

Tue 2/3

10:35 am-12:55 pm

1 stop39h 20m

$836

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Mon 1/19

2:35 pm-6:50 pm

1 stop39h 15m

Chiang Mai

Wed 2/4

7:40 pm-12:55 pm

1 stop30h 15m

$836

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Sun 3/8

12:30 am-10:35 am

1 stop22h 05m

Chiang Mai

Mon 3/30

8:00 pm-9:00 pm

2 stops37h 00m

$890

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Thu 1/22

11:30 pm-1:45 pm

2 stops25h 15m

Chiang Mai

Tue 2/3

11:50 am-7:35 pm

1 stop20h 45m

$891

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Wed 1/21

11:30 pm-9:00 pm

2 stops32h 30m

Chiang Mai

Wed 2/4

11:50 am-7:35 pm

1 stop20h 45m

$891

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Thu 2/19

11:30 pm-9:25 am

2 stops44h 55m

Chiang Mai

Sun 3/1

7:45 pm-7:35 pm

2 stops36h 50m

$931

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Wed 3/4

11:30 pm-10:35 am

1 stop22h 05m

Chiang Mai

Sun 3/8

11:50 am-7:35 pm

1 stop20h 45m

$944

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Sat 1/17

11:30 pm-9:00 pm

2 stops32h 30m

Chiang Mai

Sat 3/14

11:50 am-8:35 pm

1 stop20h 45m

$966

St. LouisChiang Mai

STL - CNX

STLCNX

Lambert-St Louis

Fri 5/1

2:25 pm-10:20 am

2 stops31h 55m

Chiang Mai

Fri 5/8

11:20 am-9:05 pm

2 stops21h 45m

$1,037

St. LouisChiang Mai

STL - CNX

STLCNX

Lambert-St Louis

Fri 5/1

2:55 pm-10:25 am

2 stops31h 30m

Chiang Mai

Thu 5/7

11:35 am-2:11 pm

2 stops38h 36m

$1,150

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 44 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, February is the cheapest month in which you can book a flight from Illinois to Chiang Mai (average of $737). Flying from Illinois to Chiang Mai in June is currently the most expensive (average of $1,585). 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 December 17, 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 Delta can get you from Illinois to Chiang Mai in just under 22h 05m. Your travel time can differ by up to 17h 36m. 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 cheapest airlines to fly from Illinois to Chiang Mai one-way?

    The cheapest airline one-way is EVA Air, with whom users have recently found tickets for as low as $421. However, be on the lookout for offers from Korean Air and Delta, as they are both options that can get you from Illinois to Chiang Mai for a low price.

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

    Most travelers choose Chicago O'Hare Intl - Chiang Mai, Chicago Midway - Chiang Mai or Lambert-St Louis - 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, February is the cheapest month in which you can book a flight from Illinois to Chiang Mai (average of $737). Flying from Illinois to Chiang Mai in June is currently the most expensive (average of $1,585). 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 December 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Cathay PacificCheapest$737Average$1,358FlexibilityNo cancel feeOn-time72%
DeltaCheapest$849Average$1,364FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$965Average$1,295FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$972Average$1,439FlexibilityNo cancel feeOn-time74%

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