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Cheap flights from Illinois to Chiang Mai from $428

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Chiang Mai departing on 9/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Illinois to Chiang Mai

Cheap round-trip flights

Logo
4:25 pm - 11:20 amORD-CNX
29h 55m2 stops
Logo
7:45 pm - 7:20 amCNX-ORD
24h 35m2 stops
$655
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Wed, Nov 5 - Wed, Feb 11
Logo
5:35 pm - 11:20 amORD-CNX
29h 45m2 stops
Logo
8:00 pm - 2:55 pmCNX-ORD
30h 55m2 stops
$658
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Tue, Oct 28 - Wed, Apr 22
Cathay Pacific Logo
4:00 pm - 6:40 pmORD-CNX
38h 40m1 stop
Cathay Pacific Logo
10:30 am - 2:25 pmCNX-ORD
39h 55m1 stop
$869Cathay Pacific
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Tue, Oct 14 - Mon, Oct 20
Cathay Pacific Logo
2:40 pm - 6:50 pmORD-CNX
39h 10m1 stop
Cathay Pacific Logo
7:40 pm - 1:00 pmCNX-ORD
30h 20m1 stop
$908Cathay Pacific
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Mon, Feb 2 - Mon, Feb 9
EVA Air Logo
12:30 am - 10:25 amORD-CNX
21h 55m1 stop
EVA Air Logo
11:35 am - 8:45 pmCNX-ORD
21h 10m1 stop
$975EVA Air
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Sun, Sep 14 - Thu, Sep 18
EVA Air Logo
12:30 am - 10:25 amORD-CNX
21h 55m1 stop
EVA Air Logo
11:50 am - 7:35 pmCNX-ORD
20h 45m1 stop
$982EVA Air
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Sun, Oct 19 - Tue, Nov 11
Delta Logo
12:10 pm - 9:55 pmORD-CNX
21h 45m1 stop
Delta Logo
11:15 pm - 9:25 pmCNX-ORD
34h 10m2 stops
$1,024Delta
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Mon, Sep 15 - Thu, Sep 18
Delta Logo
6:00 am - 9:55 pmMDW-CNX
27h 55m2 stops
Delta Logo
11:15 pm - 5:35 pmCNX-MDW
30h 20m2 stops
$1,125Delta
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Mon, Sep 15 - Thu, Sep 18
Korean Air Logo
8:40 am - 9:55 pmSTL-CNX
25h 15m2 stops
Korean Air Logo
11:15 pm - 11:09 pmCNX-STL
35h 54m2 stops
$1,244Korean Air
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Fri, Sep 19 - Tue, Sep 23
Korean Air Logo
9:20 am - 9:55 pmMDW-CNX
24h 35m2 stops
Korean Air Logo
12:15 am - 12:28 pmCNX-MDW
24h 13m2 stops
$1,491Korean Air
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Sun, Oct 19 - Mon, Oct 27

Cathay Pacific flights from Illinois to Chiang Mai

Our best Cathay Pacific deals on Illinois to Chiang Mai flight tickets
Cathay Pacific
Oct 14
ORD4:00 pmChicago O'Hare Intl
38h 40m
1 stop
CNX6:40 pmChiang Mai
Oct 20
CNX10:30 amChiang Mai
39h 55m
1 stop
ORD2:25 pmChicago O'Hare Intl
$869
Find similar
Cathay Pacific
Feb 2
ORD2:40 pmChicago O'Hare Intl
39h 10m
1 stop
CNX6:50 pmChiang Mai
Feb 9
CNX7:40 pmChiang Mai
30h 20m
1 stop
ORD1:00 pmChicago O'Hare Intl
$908
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Cathay Pacific
Jan 5
ORD2:40 pmChicago O'Hare Intl
39h 10m
1 stop
CNX6:50 pmChiang Mai
Feb 9
CNX7:40 pmChiang Mai
30h 20m
1 stop
ORD1:00 pmChicago O'Hare Intl
$913
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EVA Air flights from Illinois to Chiang Mai

Our best EVA Air deals on Illinois to Chiang Mai flight tickets
EVA Air
Sep 14
ORD12:30 amChicago O'Hare Intl
21h 55m
1 stop
CNX10:25 amChiang Mai
Sep 18
CNX11:35 amChiang Mai
21h 10m
1 stop
ORD8:45 pmChicago O'Hare Intl
$975
Find similar
EVA Air
Oct 19
ORD12:30 amChicago O'Hare Intl
21h 55m
1 stop
CNX10:25 amChiang Mai
Nov 11
CNX11:50 amChiang Mai
20h 45m
1 stop
ORD7:35 pmChicago O'Hare Intl
$982
Find similar
EVA Air
Oct 19
ORD12:30 amChicago O'Hare Intl
21h 55m
1 stop
CNX10:25 amChiang Mai
Oct 30
CNX11:50 amChiang Mai
20h 45m
1 stop
ORD8:35 pmChicago O'Hare Intl
$1,010
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momondo 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, momondo users made 832,500 searches. Data last updated August 11, 2025.
Use the filters below to find and compare flights from Illinois to Chiang Mai that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Wed 11/5

4:25 pm-11:20 am

2 stops29h 55m

Chiang Mai

Wed 2/11

7:45 pm-7:20 am

2 stops24h 35m

$655

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Tue 10/28

5:35 pm-11:20 am

2 stops29h 45m

Chiang Mai

Wed 4/22

8:00 pm-2:55 pm

2 stops30h 55m

$658

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Tue 10/14

4:00 pm-6:40 pm

1 stop38h 40m

Chiang Mai

Mon 10/20

10:30 am-2:25 pm

1 stop39h 55m

$869

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Mon 2/2

2:40 pm-6:50 pm

1 stop39h 10m

Chiang Mai

Mon 2/9

7:40 pm-1:00 pm

1 stop30h 20m

$908

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Sun 9/14

12:30 am-10:25 am

1 stop21h 55m

Chiang Mai

Thu 9/18

11:35 am-8:45 pm

1 stop21h 10m

$975

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Sun 10/19

12:30 am-10:25 am

1 stop21h 55m

Chiang Mai

Tue 11/11

11:50 am-7:35 pm

1 stop20h 45m

$982

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Mon 9/15

12:10 pm-9:55 pm

1 stop21h 45m

Chiang Mai

Thu 9/18

11:15 pm-9:25 pm

2 stops34h 10m

$1,024

ChicagoChiang Mai

MDW - CNX

MDWCNX

Chicago Midway

Mon 9/15

6:00 am-9:55 pm

2 stops27h 55m

Chiang Mai

Thu 9/18

11:15 pm-5:35 pm

2 stops30h 20m

$1,125

St. LouisChiang Mai

STL - CNX

STLCNX

Lambert-St Louis

Fri 9/19

8:40 am-9:55 pm

2 stops25h 15m

Chiang Mai

Tue 9/23

11:15 pm-11:09 pm

2 stops35h 54m

$1,244

ChicagoChiang Mai

MDW - CNX

MDWCNX

Chicago Midway

Sun 10/19

9:20 am-9:55 pm

2 stops24h 35m

Chiang Mai

Mon 10/27

12:15 am-12:28 pm

2 stops24h 13m

$1,491

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Chiang Mai from

How to get the cheapest flight ticket from Illinois to Chiang Mai

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Chiang Mai?

If you don’t want to visit Chiang Mai in April, then you should wait until September to fly from Illinois, when ticket prices are also cheap, with an average price of $1,021.

What is the cheapest day to depart on your flight to Chiang Mai?

The cheapest day to depart from Illinois to Chiang Mai is on a Tuesday. Travelers who choose to depart for Chiang Mai on a Tuesday will often find tickets for as low as $1,108. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to Chiang Mai for around $1,515.

What is the cheapest time of day to depart on your flight to Chiang Mai?

Flying to Chiang Mai from Illinois in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,231 when looking at flights departing in the evening. Flights to Chiang Mai are more costly in the morning, with an average ticket price of $1,392. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Chiang Mai?

You are more likely to see cheaper flights to Chiang Mai from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Chiang Mai for around $1,328 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chiang Mai from Illinois for as low as $1,034 on momondo.

Can stopping save me money on Illinois to Chiang Mai flights?

You could potentially save up to 53% on your flight if you consider stops on a Illinois to Chiang Mai flight.

Cheap Illinois to Chiang Mai flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Chiang Mai

Best Price Found

$428

Fastest flight time

21h 45m

Direct flights

None

Airports in Chiang Mai

1 airport
The best one-way flight to Chiang Mai from Illinois in the past 72 hours is $428. The best round-trip flight deal from Illinois to Chiang Mai found on momondo in the last 72 hours is $655.
The fastest flight from Illinois to Chiang Mai takes 21h 45m
There are no direct flights from Illinois to Chiang Mai. Popular non-direct routes for this connection are Chicago O'Hare Intl Airport - Chiang Mai Airport and Chicago Midway Airport - Chiang Mai Airport.
There is 1 airport near Chiang Mai: Chiang Mai (CNX)
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  • When did momondo last update prices for flights from Illinois to Chiang Mai Airport?

    Prices for flights from Illinois to Chiang Mai Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Illinois to Chiang Mai Airport?

  • How old do you have to be to fly from Illinois to Chiang Mai Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Chiang Mai Airport.

  • What documentation or ID do you need to fly to Chiang Mai Airport?

    The travel and health documents you'll need for your trip to Chiang Mai Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chiang Mai Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Illinois to Chiang Mai

Compare and see reviews for airlines that fly from Illinois to Chiang Mai with momondo
Airline
Rating
Free Cancellation
Price
Cathay PacificPriceFrom $933Free CancellationRating
7.6
964 reviews
Search Cathay Pacific flights
Korean AirPriceFrom $965Free CancellationRating
8.4
1,126 reviews
Search Korean Air flights
EVA AirPriceFrom $982Free CancellationRating
8.4
1,228 reviews
Search EVA Air flights
DeltaPriceFrom $1,059Free CancellationRating
8.0
7,979 reviews
Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Chiang Mai?

Finding the right flight to Chiang Mai from Illinois is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Chiang Mai quick and easy, saving you time and money.

Can I find flights from Illinois to Chiang Mai with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Illinois to Chiang Mai flights to just show those with flexible booking policies.

How can momondo help me find flights from Illinois to Chiang Mai?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Illinois to Chiang Mai.

I’m not ready to book a flight from Illinois to Chiang Mai right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Illinois to Chiang Mai flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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