How long is the flight from Thailand to Illinois?

The flight from Thailand to Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Chiang Mai (a popular airport in Thailand) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 20h 45m on average. If you fly from Ko Samui (another popular airport in Thailand) to Chicago O'Hare Intl Airport, then the average flight time is 24h 40m.

What is the cheapest airline that flies from Thailand to Illinois?

IndiGo and Turkish Airlines are the most popular carriers operating from Thailand to Illinois

What airlines fly to Illinois?

EVA Air, Korean Air and ANA are the top three most popular airlines that fly to Illinois from Thailand according to our data. EVA Air is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 7 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Thailand to Illinois?

Prices for flights from Thailand to Illinois refresh daily.

How many operators does momondo search for flights from Thailand to Illinois?

The number of operators available for flights from Thailand to Illinois is 8 as of October 2025.

How old do you have to be to fly from Thailand to Illinois?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Thailand to Illinois.

What documentation or ID do you need to fly to Illinois?

The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$430 Cheap Flights from Thailand to Illinois in 2025/26

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Find the cheapest flights from Thailand to Illinois

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Recent round-trip flight deals from Thailand to Illinois

Enter your travel dates to find the best prices.

1:20 pm - 5:04 amBKK-ORD

28h 44m2 stops

3:20 pm - 4:45 pmORD-BKK

37h 25m2 stops

$787Multiple Airlines

Find Deal

Fri, Feb 27 - Fri, Mar 27

1:20 pm - 6:21 amBKK-ORD

30h 01m2 stops

3:35 pm - 5:50 pmORD-BKK

37h 15m2 stops

$806Multiple Airlines

Find Deal

Sun, Dec 7 - Wed, Jan 14

10:05 pm - 7:30 amBKK-ORD

22h 25m1 stop

7:00 am - 5:00 amORD-BKK

33h 00m2 stops

$947Japan Airlines

Find Deal

Tue, Dec 16 - Tue, Jan 6

10:05 pm - 7:30 amBKK-ORD

22h 25m1 stop

6:00 am - 5:00 amORD-BKK

34h 00m2 stops

$972Japan Airlines

Find Deal

Tue, Dec 16 - Tue, Jan 6

12:15 am - 8:30 amCNX-ORD

21h 15m1 stop

11:15 am - 10:55 pmORD-CNX

22h 40m1 stop

$982Korean Air

Find Deal

Sun, Nov 9 - Wed, Nov 26

2:05 am - 8:30 amBKK-ORD

19h 25m1 stop

11:25 am - 11:20 pmORD-BKK

22h 55m1 stop

$1,018Korean Air

Find Deal

Tue, Nov 18 - Fri, Jan 30

7:10 am - 1:50 pmBKK-ORD

19h 40m1 stop

6:30 pm - 11:25 amORD-BKK

27h 55m2 stops

$1,024United Airlines

Find Deal

Sun, Dec 7 - Wed, Jan 14

4:55 pm - 5:16 amBKK-ORD

25h 21m2 stops

6:00 am - 11:25 amORD-BKK

40h 25m2 stops

$1,035United Airlines

Find Deal

Tue, Nov 25 - Sun, Jan 4

11:35 am - 9:00 pmCNX-ORD

21h 25m1 stop

12:30 am - 10:25 amORD-CNX

21h 55m1 stop

$1,087EVA Air

Find Deal

Wed, Apr 15 - Thu, Apr 30

12:10 pm - 7:35 pmCNX-ORD

44h 25m2 stops

11:30 pm - 9:25 amORD-CNX

44h 55m2 stops

$1,168EVA Air

Find Deal

Mon, Dec 15 - Thu, Jan 15

IndiGo flights from Thailand to Illinois

Our best IndiGo deals on Thailand to Illinois flight tickets

IndiGo

Dec 7

BKK10:50 amBangkok Suvarnabhumi

44h 35m

2 stops

ORD6:25 pmChicago O'Hare Intl

Jan 14

ORD8:20 pmChicago O'Hare Intl

35h 45m

2 stops

BKK9:05 pmBangkok Suvarnabhumi

$886

Find similar

IndiGo

Dec 16

BKK10:10 amBangkok Suvarnabhumi

45h 15m

2 stops

ORD6:25 pmChicago O'Hare Intl

Jan 6

ORD11:50 amChicago O'Hare Intl

44h 15m

2 stops

BKK9:05 pmBangkok Suvarnabhumi

$911

Find similar

IndiGo

Nov 21

BKK10:50 amBangkok Suvarnabhumi

44h 35m

2 stops

ORD6:25 pmChicago O'Hare Intl

Nov 30

ORD11:50 amChicago O'Hare Intl

44h 15m

2 stops

BKK9:05 pmBangkok Suvarnabhumi

$965

Find similar

Japan Airlines flights from Thailand to Illinois

Our best Japan Airlines deals on Thailand to Illinois flight tickets

Japan Airlines

Dec 16

BKK10:05 pmBangkok Suvarnabhumi

22h 25m

1 stop

ORD7:30 amChicago O'Hare Intl

Jan 6

ORD7:00 amChicago O'Hare Intl

33h 00m

2 stops

BKK5:00 amBangkok Suvarnabhumi

$947

Find similar

Japan Airlines

Dec 16

BKK10:05 pmBangkok Suvarnabhumi

22h 25m

1 stop

ORD7:30 amChicago O'Hare Intl

Jan 6

ORD6:00 amChicago O'Hare Intl

34h 00m

2 stops

BKK5:00 amBangkok Suvarnabhumi

$972

Find similar

Japan Airlines

Dec 17

BKK9:55 amBangkok Suvarnabhumi

34h 35m

1 stop

ORD7:30 amChicago O'Hare Intl

Jan 14

ORD6:00 amChicago O'Hare Intl

34h 00m

2 stops

BKK5:00 amBangkok Suvarnabhumi

$1,033

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Fri 2/27

1:20 pm-5:04 am

2 stops28h 44m

Chicago O'Hare Intl

Fri 3/27

3:20 pm-4:45 pm

2 stops37h 25m

$787

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Sun 12/7

1:20 pm-6:21 am

2 stops30h 01m

Chicago O'Hare Intl

Wed 1/14

3:35 pm-5:50 pm

2 stops37h 15m

$806

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Tue 12/16

10:05 pm-7:30 am

1 stop22h 25m

Chicago O'Hare Intl

Tue 1/6

7:00 am-5:00 am

2 stops33h 00m

$947

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Tue 12/16

10:05 pm-7:30 am

1 stop22h 25m

Chicago O'Hare Intl

Tue 1/6

6:00 am-5:00 am

2 stops34h 00m

$972

Chiang MaiChicago

CNX - ORD

CNXORD

Chiang Mai

Sun 11/9

12:15 am-8:30 am

1 stop21h 15m

Chicago O'Hare Intl

Wed 11/26

11:15 am-10:55 pm

1 stop22h 40m

$982

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Tue 11/18

2:05 am-8:30 am

1 stop19h 25m

Chicago O'Hare Intl

Fri 1/30

11:25 am-11:20 pm

1 stop22h 55m

$1,018

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Sun 12/7

7:10 am-1:50 pm

1 stop19h 40m

Chicago O'Hare Intl

Wed 1/14

6:30 pm-11:25 am

2 stops27h 55m

$1,024

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Tue 11/25

4:55 pm-5:16 am

2 stops25h 21m

Chicago O'Hare Intl

Sun 1/4

6:00 am-11:25 am

2 stops40h 25m

$1,035

Chiang MaiChicago

CNX - ORD

CNXORD

Chiang Mai

Wed 4/15

11:35 am-9:00 pm

1 stop21h 25m

Chicago O'Hare Intl

Thu 4/30

12:30 am-10:25 am

1 stop21h 55m

$1,087

Chiang MaiChicago

CNX - ORD

CNXORD

Chiang Mai

Mon 12/15

12:10 pm-7:35 pm

2 stops44h 25m

Chicago O'Hare Intl

Thu 1/15

11:30 pm-9:25 am

2 stops44h 55m

$1,168

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Thailand to Illinois

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

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Thailand is in February. Flight prices, which tend to average around $1,023, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of February, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $1,078.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Thailand to Illinois is on a Tuesday when prices can be found for as low as $1,042. Flights from Thailand to Illinois on a Saturday will generally be more expensive and average around $1,158. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Thailand to Illinois during this time can be as low as $1,107. Flights in the morning are often more expensive with an average ticket price of $1,117.

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Thailand when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $1,143 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Thailand for as low as $1,037 on momondo.

Can stopping save me money on Thailand to Illinois flights?

You could potentially save up to 40% on your flight if you consider stops on a Thailand to Illinois flight.

Cheap Thailand to Illinois flight deals and tips

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

Direct flights	None

There are no direct flights from Thailand to Illinois. There are no popular flight routes from Thailand to Illinois.

Search flight deals

When did momondo last update prices for flights from Thailand to Illinois?
Prices for flights from Thailand to Illinois refresh daily.
How many operators does momondo search for flights from Thailand to Illinois?
The number of operators available for flights from Thailand to Illinois is 8 as of October 2025.
How old do you have to be to fly from Thailand to Illinois?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Thailand to Illinois.
What documentation or ID do you need to fly to Illinois?
The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Thailand to Illinois

Compare and see reviews for airlines that fly from Thailand to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Japan Airlines	PriceFrom $681	Free Cancellation	Rating 8.3 1,591 reviews	Search Japan Airlines flights
Korean Air	PriceFrom $902	Free Cancellation	Rating 8.4 1,153 reviews	Search Korean Air flights
ANA	PriceFrom $983	Free Cancellation	Rating 8.4 994 reviews	Search ANA flights
Thai Airways	PriceFrom $994	Free Cancellation	Rating 7.8 360 reviews	Search Thai Airways flights
United Airlines	PriceFrom $996	Free Cancellation	Rating 7.4 8,998 reviews	Search United Airlines flights
EVA Air	PriceFrom $1,007	Free Cancellation	Rating 8.4 1,258 reviews	Search EVA Air flights
Cathay Pacific	PriceFrom $1,021	Free Cancellation	Rating 7.6 1,040 reviews	Search Cathay Pacific flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Thailand to Illinois for you.

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

momondo does allow users to show only those flights to Illinois from Thailand which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Thailand to Illinois?

momondo helps you find the best flight between Thailand and Illinois by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Thailand to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.