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 25h 23m 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 32h 45m.

What airlines fly to Illinois?

EVA Air, Cathay Pacific 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 48% 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.

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

Delta, Cathay Pacific, and Qatar 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 7 as of March 2026.

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.

$542 Cheap Flights from Thailand to Illinois in 2026

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Find the cheapest flights from Thailand to Illinois

Round-trip

One-way

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Recent round-trip flight deals from Thailand to Illinois

Enter your travel dates to find the best prices.

2:35 am - 11:47 pm

BKK

ORD

33h 12m

2 stops

8:55 am - 9:45 pm

ORD

BKK

24h 50m

2 stops

$975Delta

Sat, Jun 20 - Wed, Jul 15

11:40 pm - 12:06 pm

BKK

ORD

48h 26m

2 stops

5:55 pm - 12:10 pm

ORD

BKK

30h 15m

2 stops

$1,005Multiple Airlines

Mon, Jul 20 - Wed, Aug 26

4:45 pm - 8:45 pm

BKK

ORD

40h 00m

1 stop

5:55 pm - 11:20 am

ORD

BKK

29h 25m

2 stops

$1,019Multiple Airlines

Fri, Sep 4 - Fri, Sep 25

11:35 pm - 2:55 pm

BKK

ORD

27h 20m

1 stop

5:45 pm - 4:35 am

ORD

BKK

22h 50m

1 stop

$1,020ANA

Sun, Jul 5 - Sat, Jul 18

9:35 am - 8:40 am

BKK

ORD

35h 05m

1 stop

6:15 am - 4:35 am

ORD

BKK

34h 20m

2 stops

$1,024United Airlines

Thu, Jun 18 - Sun, Aug 9

3:20 pm - 8:45 pm

BKK

ORD

41h 25m

1 stop

5:55 pm - 11:20 am

ORD

BKK

29h 25m

2 stops

$1,025Multiple Airlines

Fri, Sep 4 - Fri, Sep 25

11:25 pm - 11:01 pm

HKT

STL

35h 36m

2 stops

6:45 am - 10:10 pm

STL

HKT

27h 25m

2 stops

$1,199Korean Air

Wed, Sep 9 - Sun, Sep 13

7:55 am - 2:03 pm

BKK

STL

42h 08m

2 stops

6:21 am - 5:45 am

STL

BKK

35h 24m

2 stops

$1,224Japan Airlines

Wed, Apr 29 - Wed, May 6

9:40 pm - 11:08 pm

BKK

STL

37h 28m

2 stops

7:23 am - 5:45 am

STL

BKK

34h 22m

2 stops

$1,271Japan Airlines

Fri, Aug 28 - Tue, Sep 1

11:55 am - 1:55 pm

USM

ORD

38h 00m

1 stop

4:15 pm - 7:40 pm

ORD

USM

39h 25m

1 stop

$2,190Cathay Pacific

Fri, May 1 - Fri, May 8

Delta flights from Thailand to Illinois

Our best Delta deals on Thailand to Illinois flight tickets

Delta

Jun 20

BKK2:35 amBangkok Suvarnabhumi

33h 12m

2 stops

ORD11:47 pmChicago O'Hare Intl

Jul 15

ORD8:55 amChicago O'Hare Intl

24h 50m

2 stops

BKK9:45 pmBangkok Suvarnabhumi

$975

Delta

Jun 4

BKK9:50 amBangkok Suvarnabhumi

35h 50m

1 stop

ORD9:40 amChicago O'Hare Intl

Jul 3

ORD7:15 amChicago O'Hare Intl

28h 20m

2 stops

BKK11:35 pmBangkok Suvarnabhumi

$1,055

Delta

Jun 17

BKK2:35 amBangkok Suvarnabhumi

33h 12m

2 stops

ORD11:47 pmChicago O'Hare Intl

Jul 13

ORD12:30 pmChicago O'Hare Intl

24h 35m

1 stop

BKK1:05 amBangkok Suvarnabhumi

$1,060

United Airlines flights from Thailand to Illinois

Our best United Airlines deals on Thailand to Illinois flight tickets

United Airlines

Jun 18

BKK9:35 amBangkok Suvarnabhumi

35h 05m

1 stop

ORD8:40 amChicago O'Hare Intl

Aug 9

ORD6:15 amChicago O'Hare Intl

34h 20m

2 stops

BKK4:35 amBangkok Suvarnabhumi

$1,024

United Airlines

Jun 18

BKK9:35 amBangkok Suvarnabhumi

35h 05m

1 stop

ORD8:40 amChicago O'Hare Intl

Jul 12

ORD11:50 amChicago O'Hare Intl

24h 05m

1 stop

BKK11:55 pmBangkok Suvarnabhumi

$1,027

United Airlines

Jun 1

BKK9:35 amBangkok Suvarnabhumi

31h 16m

2 stops

ORD4:51 amChicago O'Hare Intl

Sep 1

ORD5:45 pmChicago O'Hare Intl

27h 50m

3 stops

BKK9:35 amBangkok Suvarnabhumi

$1,030

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Sat 6/20

2:35 am-11:47 pm

2 stops33h 12m

Chicago O'Hare Intl

Wed 7/15

8:55 am-9:45 pm

2 stops24h 50m

$975

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Mon 7/20

11:40 pm-12:06 pm

2 stops48h 26m

Chicago O'Hare Intl

Wed 8/26

5:55 pm-12:10 pm

2 stops30h 15m

$1,005

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Fri 9/4

4:45 pm-8:45 pm

1 stop40h 00m

Chicago O'Hare Intl

Fri 9/25

5:55 pm-11:20 am

2 stops29h 25m

$1,019

Quickest round-trip

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Sun 7/5

11:35 pm-2:55 pm

1 stop27h 20m

Chicago O'Hare Intl

Sat 7/18

5:45 pm-4:35 am

1 stop22h 50m

$1,020

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Thu 6/18

9:35 am-8:40 am

1 stop35h 05m

Chicago O'Hare Intl

Sun 8/9

6:15 am-4:35 am

2 stops34h 20m

$1,024

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Fri 9/4

3:20 pm-8:45 pm

1 stop41h 25m

Chicago O'Hare Intl

Fri 9/25

5:55 pm-11:20 am

2 stops29h 25m

$1,025

Phuket CitySt. Louis

HKT - STL

HKTSTL

Phuket City

Wed 9/9

11:25 pm-11:01 pm

2 stops35h 36m

Lambert-St Louis

Sun 9/13

6:45 am-10:10 pm

2 stops27h 25m

$1,199

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Wed 4/29

7:55 am-2:03 pm

2 stops42h 08m

Lambert-St Louis

Wed 5/6

6:21 am-5:45 am

2 stops35h 24m

$1,224

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Fri 8/28

9:40 pm-11:08 pm

2 stops37h 28m

Lambert-St Louis

Tue 9/1

7:23 am-5:45 am

2 stops34h 22m

$1,271

Ko SamuiChicago

USM - ORD

USMORD

Ko Samui

Fri 5/1

11:55 am-1:55 pm

1 stop38h 00m

Chicago O'Hare Intl

Fri 5/8

4:15 pm-7:40 pm

1 stop39h 25m

$2,190

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 $1,015, 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 November is also cheap. Prices for this month can be found on momondo for an average of $1,024.

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 $1,137 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 $987 on momondo.

Can stopping save me money on Thailand to Illinois flights?

You could potentially save up to 44% 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

Fastest flight time	23h 30m
Direct flights	None

The fastest flight from Thailand to Illinois takes 23h 30m

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 7 as of March 2026.
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 1,740 reviews	Search Japan Airlines flights
Thai Airways	PriceFrom $720	Free Cancellation	Rating 7.8 393 reviews	Search Thai Airways flights
Korean Air	PriceFrom $925	Free Cancellation	Rating 8.4 1,202 reviews	Search Korean Air flights
ANA	PriceFrom $983	Free Cancellation	Rating 8.4 1,129 reviews	Search ANA flights
United Airlines	PriceFrom $987	Free Cancellation	Rating 7.4 9,436 reviews	Search United Airlines flights
EVA Air	PriceFrom $993	Free Cancellation	Rating 8.4 1,379 reviews	Search EVA Air flights
Cathay Pacific	PriceFrom $1,036	Free Cancellation	Rating 7.6 1,216 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.