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Cheap flights from Illinois to Chiang Mai from $645

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 8/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Illinois to Chiang Mai

Cheap round-trip flights

Enter your travel dates to find the best prices.
Cathay Pacific Logo
3:35 pm - 6:50 pm
ORD
-
CNX
39h 15m
1 stop
Cathay Pacific Logo
10:35 am - 12:55 pm
CNX
-
ORD
39h 20m
1 stop
$970Cathay Pacific
Mon, Oct 26 - Tue, Feb 16
Etihad Airways Logo
9:20 pm - 6:05 am
ORD
-
CNX
20h 45m
1 stop
Etihad Airways Logo
8:50 am - 7:55 am
CNX
-
ORD
36h 05m
1 stop
$1,008Etihad Airways
Mon, Oct 26 - Tue, Feb 16
Delta Logo
12:15 pm - 10:55 pm
ORD
-
CNX
22h 40m
1 stop
Delta Logo
12:15 am - 11:46 pm
CNX
-
ORD
36h 31m
2 stops
$1,020Delta
Mon, Oct 26 - Mon, Feb 15
Delta Logo
12:15 pm - 10:55 pm
ORD
-
CNX
22h 40m
1 stop
Delta Logo
12:15 am - 11:46 pm
CNX
-
ORD
36h 31m
2 stops
$1,021Delta
Mon, Oct 26 - Mon, Feb 15
Delta Logo
7:00 am - 10:55 pm
ORD
-
CNX
27h 55m
2 stops
Delta Logo
12:15 am - 11:46 pm
CNX
-
ORD
36h 31m
2 stops
$1,025Delta
Mon, Oct 26 - Mon, Feb 15
Multiple Airlines Logo
5:45 pm - 9:20 am
ORD
-
CNX
27h 35m
2 stops
Multiple Airlines Logo
4:55 pm - 8:40 am
CNX
-
ORD
27h 45m
2 stops
$1,098Multiple Airlines
Sun, Sep 20 - Thu, Oct 1
Multiple Airlines Logo
8:42 pm - 10:25 am
ORD
-
CNX
25h 43m
2 stops
Multiple Airlines Logo
11:35 am - 8:45 pm
CNX
-
ORD
21h 10m
1 stop
$1,167Multiple Airlines
Sun, Sep 20 - Thu, Oct 1
EVA Air Logo
12:30 am - 10:25 am
ORD
-
CNX
21h 55m
1 stop
EVA Air Logo
11:35 am - 8:45 pm
CNX
-
ORD
21h 10m
1 stop
$1,172EVA Air
Sat, Sep 19 - Thu, Oct 1
Qatar Airways Logo
6:00 am - 9:20 am
STL
-
CNX
39h 20m
3 stops
Qatar Airways Logo
11:55 am - 2:45 pm
CNX
-
STL
38h 50m
3 stops
$1,470Qatar Airways
Tue, Sep 1 - Sat, Sep 12
Qatar Airways Logo
9:31 am - 11:15 am
STL
-
CNX
37h 44m
3 stops
Qatar Airways Logo
8:00 pm - 11:59 pm
CNX
-
STL
39h 59m
3 stops
$1,779Qatar Airways
Fri, Aug 21 - Mon, Aug 24

Cathay Pacific flights from Illinois to Chiang Mai

Our best Cathay Pacific deals on Illinois to Chiang Mai flight tickets
Cathay Pacific
Oct 26
ORD3:35 pmChicago O'Hare Intl
39h 15m
1 stop
CNX6:50 pmChiang Mai
Feb 16
CNX10:35 amChiang Mai
39h 20m
1 stop
ORD12:55 pmChicago O'Hare Intl
$970
Cathay Pacific
Jul 22
ORD4:00 pmChicago O'Hare Intl
38h 40m
1 stop
CNX6:40 pmChiang Mai
Aug 2
CNX10:30 amChiang Mai
39h 50m
1 stop
ORD2:20 pmChicago O'Hare Intl
$1,170
Cathay Pacific
Jun 2
ORD4:15 pmChicago O'Hare Intl
29h 30m
1 stop
CNX9:45 amChiang Mai
Jun 9
CNX7:25 pmChiang Mai
30h 30m
1 stop
ORD1:55 pmChicago O'Hare Intl
$1,206

Qatar Airways flights from Illinois to Chiang Mai

Our best Qatar Airways deals on Illinois to Chiang Mai flight tickets
Qatar Airways
Sep 1
STL6:00 amLambert-St Louis
39h 20m
3 stops
CNX9:20 amChiang Mai
Sep 12
CNX11:55 amChiang Mai
38h 50m
3 stops
STL2:45 pmLambert-St Louis
$1,470
Qatar Airways
Jun 2
ORD7:20 pmChicago O'Hare Intl
30h 25m
2 stops
CNX1:45 pmChiang Mai
Jun 9
CNX8:00 pmChiang Mai
32h 50m
2 stops
ORD4:50 pmChicago O'Hare Intl
$1,576
Qatar Airways
Jun 12
ORD7:20 pmChicago O'Hare Intl
35h 50m
2 stops
CNX7:10 pmChiang Mai
Jun 19
CNX8:00 pmChiang Mai
55h 05m
2 stops
ORD3:05 pmChicago O'Hare Intl
$1,633

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 May 6, 2026.
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

Cheapest round-trip

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Mon 10/26

3:35 pm-6:50 pm

1 stop39h 15m

Chiang Mai

Tue 2/16

10:35 am-12:55 pm

1 stop39h 20m

$970

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Mon 10/26

9:20 pm-6:05 am

1 stop20h 45m

Chiang Mai

Tue 2/16

8:50 am-7:55 am

1 stop36h 05m

$1,008

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Mon 10/26

12:15 pm-10:55 pm

1 stop22h 40m

Chiang Mai

Mon 2/15

12:15 am-11:46 pm

2 stops36h 31m

$1,020

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Mon 10/26

12:15 pm-10:55 pm

1 stop22h 40m

Chiang Mai

Mon 2/15

12:15 am-11:46 pm

2 stops36h 31m

$1,021

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Mon 10/26

7:00 am-10:55 pm

2 stops27h 55m

Chiang Mai

Mon 2/15

12:15 am-11:46 pm

2 stops36h 31m

$1,025

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Sun 9/20

5:45 pm-9:20 am

2 stops27h 35m

Chiang Mai

Thu 10/1

4:55 pm-8:40 am

2 stops27h 45m

$1,098

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Sun 9/20

8:42 pm-10:25 am

2 stops25h 43m

Chiang Mai

Thu 10/1

11:35 am-8:45 pm

1 stop21h 10m

$1,167
Quickest round-trip

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Sat 9/19

12:30 am-10:25 am

1 stop21h 55m

Chiang Mai

Thu 10/1

11:35 am-8:45 pm

1 stop21h 10m

$1,172

St. LouisChiang Mai

STL - CNX

STLCNX

Lambert-St Louis

Tue 9/1

6:00 am-9:20 am

3 stops39h 20m

Chiang Mai

Sat 9/12

11:55 am-2:45 pm

3 stops38h 50m

$1,470

St. LouisChiang Mai

STL - CNX

STLCNX

Lambert-St Louis

Fri 8/21

9:31 am-11:15 am

3 stops37h 44m

Chiang Mai

Mon 8/24

8:00 pm-11:59 pm

3 stops39h 59m

$1,779

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 December, then you should wait until February to fly from Illinois, when ticket prices are also cheap, with an average price of $737.

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

You could potentially save up to 34% 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

Fastest flight time

25h 37m

Direct flights

None
The fastest flight from Illinois to Chiang Mai takes 25h 37m
There are no direct flights from Illinois to Chiang Mai. There are no popular flight routes from Illinois to Chiang Mai.
Search flight deals

Frequently asked questions about flying from Illinois to Chiang Mai

  • 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 $737Free CancellationRating
7.6
1,314 reviews
Search Cathay Pacific flights
DeltaPriceFrom $849Free CancellationRating
7.9
8,458 reviews
Search Delta flights
EVA AirPriceFrom $919Free CancellationRating
8.5
1,445 reviews
Search EVA Air 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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