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 Bangkok (a popular airport in Thailand) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 18h 30m on average. If you fly from Chiang Mai (another popular airport in Thailand) to Chicago O'Hare Intl Airport, then the average flight time is 20h 45m.

What airlines fly to Illinois?

EVA Air, ANA and Korean Air 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 8 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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

IndiGo, Air Canada, and Thai Airways are the most popular carriers operating from Thailand to Illinois

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 9 as of August 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.

$463 Cheap Flights from Thailand to Illinois in 2025

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Find the cheapest flights from Thailand to Illinois

Round-trip

One-way

Last minute

Recent round-trip flight deals from Thailand to Illinois

6:40 pm - 6:14 pmBKK-ORD

35h 34m2 stops

7:09 pm - 12:15 pmORD-BKK

29h 06m2 stops

$873

Find Deal

Wed, Sep 3 - Wed, Sep 10

12:30 pm - 5:40 amBKK-ORD

29h 10m2 stops

7:09 pm - 10:00 amORD-BKK

26h 51m2 stops

$887

Find Deal

Tue, Sep 2 - Tue, Sep 9

9:40 pm - 9:30 amBKK-ORD

23h 50m1 stop

12:10 pm - 1:05 amORD-BKK

24h 55m1 stop

$962Korean Air

Find Deal

Tue, Sep 2 - Wed, Sep 17

11:50 am - 7:35 pmCNX-ORD

20h 45m1 stop

11:30 pm - 10:35 amORD-CNX

22h 05m1 stop

$1,051EVA Air

Find Deal

Mon, Dec 15 - Thu, Jan 15

11:50 am - 7:35 pmCNX-ORD

20h 45m1 stop

11:30 pm - 10:35 amORD-CNX

22h 05m1 stop

$1,054EVA Air

Find Deal

Mon, Dec 15 - Thu, Jan 15

12:15 am - 8:30 amCNX-ORD

21h 15m1 stop

11:25 am - 11:05 pmORD-CNX

22h 40m1 stop

$1,102Korean Air

Find Deal

Sun, Dec 14 - Thu, Jan 15

7:25 pm - 2:25 pmCNX-ORD

31h 00m1 stop

4:00 pm - 9:45 amORD-CNX

29h 45m1 stop

$1,320Cathay Pacific

Find Deal

Sat, Sep 20 - Sat, Sep 27

10:30 am - 2:25 pmCNX-ORD

39h 55m1 stop

3:40 pm - 9:50 amORD-CNX

30h 10m1 stop

$1,368Cathay Pacific

Find Deal

Wed, Oct 1 - Wed, Oct 29

7:00 am - 9:58 pmBKK-STL

26h 58m2 stops

3:23 pm - 10:50 amSTL-BKK

31h 27m3 stops

$1,406United Airlines

Find Deal

Sat, Sep 27 - Sat, Oct 25

7:00 am - 4:32 pmBKK-STL

21h 32m2 stops

3:23 pm - 10:50 amSTL-BKK

31h 27m3 stops

$1,412United Airlines

Find Deal

Sat, Sep 27 - Sat, Oct 25

Japan Airlines flights from Thailand to Illinois

Our best Japan Airlines deals on Thailand to Illinois flight tickets

Japan Airlines

Sep 1

BKK10:05 pmBangkok Suvarnabhumi

23h 00m

1 stop

ORD9:05 amChicago O'Hare Intl

Sep 8

ORD9:10 amChicago O'Hare Intl

31h 30m

2 stops

BKK4:40 amBangkok Suvarnabhumi

$928

Find similar

Japan Airlines

Aug 25

BKK12:25 amBangkok Suvarnabhumi

35h 47m

2 stops

ORD12:12 amChicago O'Hare Intl

Sep 1

ORD1:05 amChicago O'Hare Intl

26h 05m

1 stop

BKK3:10 pmBangkok Suvarnabhumi

$933

Find similar

Japan Airlines

Sep 1

BKK12:25 amBangkok Suvarnabhumi

32h 38m

2 stops

ORD9:03 pmChicago O'Hare Intl

Sep 8

ORD1:05 amChicago O'Hare Intl

26h 05m

1 stop

BKK3:10 pmBangkok Suvarnabhumi

$939

Find similar

EVA Air flights from Thailand to Illinois

Our best EVA Air deals on Thailand to Illinois flight tickets

EVA Air

Dec 15

CNX11:50 amChiang Mai

20h 45m

1 stop

ORD7:35 pmChicago O'Hare Intl

Jan 15

ORD11:30 pmChicago O'Hare Intl

22h 05m

1 stop

CNX10:35 amChiang Mai

$1,051

Find similar

EVA Air

Dec 15

CNX11:50 amChiang Mai

20h 45m

1 stop

ORD7:35 pmChicago O'Hare Intl

Jan 15

ORD11:30 pmChicago O'Hare Intl

22h 05m

1 stop

CNX10:35 amChiang Mai

$1,054

Find similar

EVA Air

Oct 1

CNX11:35 amChiang Mai

21h 10m

1 stop

ORD8:45 pmChicago O'Hare Intl

Oct 30

ORD5:53 pmChicago O'Hare Intl

28h 42m

2 stops

CNX10:35 amChiang Mai

$1,066

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Wed 9/3

6:40 pm-6:14 pm

2 stops35h 34m

Chicago O'Hare Intl

Wed 9/10

7:09 pm-12:15 pm

2 stops29h 06m

$873

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Tue 9/2

12:30 pm-5:40 am

2 stops29h 10m

Chicago O'Hare Intl

Tue 9/9

7:09 pm-10:00 am

2 stops26h 51m

$887

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Tue 9/2

9:40 pm-9:30 am

1 stop23h 50m

Chicago O'Hare Intl

Wed 9/17

12:10 pm-1:05 am

1 stop24h 55m

$962

Chiang MaiChicago

CNX - ORD

CNXORD

Chiang Mai

Mon 12/15

11:50 am-7:35 pm

1 stop20h 45m

Chicago O'Hare Intl

Thu 1/15

11:30 pm-10:35 am

1 stop22h 05m

$1,051

Chiang MaiChicago

CNX - ORD

CNXORD

Chiang Mai

Mon 12/15

11:50 am-7:35 pm

1 stop20h 45m

Chicago O'Hare Intl

Thu 1/15

11:30 pm-10:35 am

1 stop22h 05m

$1,054

Chiang MaiChicago

CNX - ORD

CNXORD

Chiang Mai

Sun 12/14

12:15 am-8:30 am

1 stop21h 15m

Chicago O'Hare Intl

Thu 1/15

11:25 am-11:05 pm

1 stop22h 40m

$1,102

Chiang MaiChicago

CNX - ORD

CNXORD

Chiang Mai

Sat 9/20

7:25 pm-2:25 pm

1 stop31h 00m

Chicago O'Hare Intl

Sat 9/27

4:00 pm-9:45 am

1 stop29h 45m

$1,320

Chiang MaiChicago

CNX - ORD

CNXORD

Chiang Mai

Wed 10/1

10:30 am-2:25 pm

1 stop39h 55m

Chicago O'Hare Intl

Wed 10/29

3:40 pm-9:50 am

1 stop30h 10m

$1,368

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Sat 9/27

7:00 am-9:58 pm

2 stops26h 58m

Lambert-St Louis

Sat 10/25

3:23 pm-10:50 am

3 stops31h 27m

$1,406

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Sat 9/27

7:00 am-4:32 pm

2 stops21h 32m

Lambert-St Louis

Sat 10/25

3:23 pm-10:50 am

3 stops31h 27m

$1,412

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 September is also cheap. Prices for this month can be found on momondo for an average of $1,034.

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 $1,136 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 $1,022 on momondo.

Cheap Thailand to Illinois flight deals and tips

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

Best Price Found	$463
Fastest flight time	19h 26m
Direct flights	None
Airports in Illinois	3 airports

The best one-way flight to Illinois from Thailand in the past 72 hours is $463. The best round-trip flight deal from Thailand to Illinois found on momondo in the last 72 hours is $873.

The fastest flight from Thailand to Illinois takes 19h 26m

There are no direct flights from Thailand to Illinois. Popular non-direct routes for this connection are Bangkok Don Mueang Intl Airport - Chicago O'Hare Intl Airport, Bangkok Suvarnabhumi Airport - Chicago O'Hare Intl Airport and Chiang Mai Airport - Chicago O'Hare Intl Airport.

There are 3 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL)

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 9 as of August 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
Delta	PriceFrom $548	Free Cancellation	Rating 8.0 7,985 reviews	Search Delta flights
Japan Airlines	PriceFrom $681	Free Cancellation	Rating 8.3 1,545 reviews	Search Japan Airlines flights
Korean Air	PriceFrom $915	Free Cancellation	Rating 8.4 1,122 reviews	Search Korean Air flights
Cathay Pacific	PriceFrom $956	Free Cancellation	Rating 7.6 955 reviews	Search Cathay Pacific flights
ANA	PriceFrom $965	Free Cancellation	Rating 8.4 924 reviews	Search ANA flights
United Airlines	PriceFrom $986	Free Cancellation	Rating 7.4 8,917 reviews	Search United Airlines flights
EVA Air	PriceFrom $986	Free Cancellation	Rating 8.4 1,224 reviews	Search EVA Air flights
Thai Airways	PriceFrom $994	Free Cancellation	Rating 7.8 343 reviews	Search Thai Airways 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.