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

Turkish Airlines, Philippine Airlines, and Etihad Airways are the most popular carriers operating from Thailand to Illinois

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 Bangkok (another popular airport in Thailand) to Chicago O'Hare Intl Airport, then the average flight time is 21h 38m.

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 41% 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.

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 December 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.

$508 Cheap Flights from Thailand to Illinois in 2025/26

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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.

11:50 pm - 12:01 pm

BKK

ORD

49h 11m2 stops

3:20 pm - 12:10 pm

ORD

BKK

32h 50m2 stops

$791Multiple Airlines

Tue, Mar 3 - Wed, Apr 15

1:20 pm - 2:38 pm

BKK

ORD

38h 18m2 stops

8:00 am - 5:50 pm

ORD

BKK

44h 50m2 stops

$799Multiple Airlines

Tue, Jan 27 - Tue, Feb 3

11:35 am - 12:08 pm

CNX

ORD

36h 33m2 stops

8:42 pm - 10:25 am

ORD

CNX

25h 43m2 stops

$988EVA Air

Sat, Jun 13 - Tue, Jul 21

11:35 am - 12:08 pm

CNX

ORD

36h 33m2 stops

12:30 am - 10:25 am

ORD

CNX

21h 55m1 stop

$1,060EVA Air

Sat, Jun 13 - Mon, Jul 20

12:20 pm - 11:59 pm

HKT

STL

48h 39m2 stops

7:04 am - 11:20 am

STL

HKT

39h 16m2 stops

$1,179Cathay Pacific

Thu, Jan 22 - Sun, Jan 25

4:55 pm - 4:50 pm

BKK

PIA

36h 55m3 stops

9:00 am - 11:25 am

PIA

BKK

37h 25m3 stops

$1,273United Airlines

Sun, Feb 15 - Thu, Feb 19

9:55 am - 1:54 pm

BKK

STL

40h 59m2 stops

7:00 am - 4:25 pm

STL

BKK

44h 25m2 stops

$1,300Japan Airlines

Tue, Feb 17 - Thu, Feb 19

9:55 am - 6:11 pm

BKK

STL

45h 16m2 stops

6:30 am - 5:05 am

STL

BKK

57h 35m2 stops

$1,303Japan Airlines

Tue, Feb 17 - Thu, Feb 19

5:30 pm - 10:58 pm

BKK

STL

41h 28m2 stops

10:03 am - 6:00 pm

STL

BKK

43h 57m2 stops

$1,325Cathay Pacific

Sun, Mar 29 - Thu, Apr 2

4:55 pm - 12:43 pm

BKK

PIA

32h 48m3 stops

9:00 am - 12:20 am

PIA

BKK

26h 20m2 stops

$1,355United Airlines

Sun, Feb 15 - Thu, Feb 19

Delta flights from Thailand to Illinois

Our best Delta deals on Thailand to Illinois flight tickets

Delta

Feb 11

BKK9:30 pmBangkok Suvarnabhumi

34h 29m

2 stops

ORD6:59 pmChicago O'Hare Intl

Apr 11

ORD5:59 pmChicago O'Hare Intl

31h 16m

2 stops

BKK1:15 pmBangkok Suvarnabhumi

$987

Find similar

Delta

Dec 20

BKK12:55 amBangkok Suvarnabhumi

33h 39m

2 stops

ORD9:34 pmChicago O'Hare Intl

Mar 14

ORD7:20 amChicago O'Hare Intl

28h 00m

2 stops

BKK11:20 pmBangkok Suvarnabhumi

$990

Find similar

Delta

Jan 27

BKK9:30 pmBangkok Suvarnabhumi

33h 25m

2 stops

MDW5:55 pmChicago Midway

Feb 3

MDW6:00 amChicago Midway

29h 45m

2 stops

BKK12:45 amBangkok Suvarnabhumi

$1,055

Find similar

Japan Airlines flights from Thailand to Illinois

Our best Japan Airlines deals on Thailand to Illinois flight tickets

Japan Airlines

Jan 21

BKK8:05 amBangkok Suvarnabhumi

18h 40m

1 stop

ORD1:45 pmChicago O'Hare Intl

Jan 30

ORD10:35 amChicago O'Hare Intl

24h 00m

1 stop

BKK11:35 pmBangkok Suvarnabhumi

$1,027

Find similar

Japan Airlines

Dec 17

BKK8:05 amBangkok Suvarnabhumi

18h 35m

1 stop

ORD1:40 pmChicago O'Hare Intl

Jan 14

ORD6:00 amChicago O'Hare Intl

34h 00m

2 stops

BKK5:00 amBangkok Suvarnabhumi

$1,032

Find similar

Japan Airlines

Dec 22

BKK10:05 pmBangkok Suvarnabhumi

22h 25m

1 stop

ORD7:30 amChicago O'Hare Intl

Jan 6

ORD10:35 amChicago O'Hare Intl

40h 50m

1 stop

BKK4:25 pmBangkok Suvarnabhumi

$1,059

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Tue 3/3

11:50 pm-12:01 pm

2 stops49h 11m

Chicago O'Hare Intl

Wed 4/15

3:20 pm-12:10 pm

2 stops32h 50m

$791

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Tue 1/27

1:20 pm-2:38 pm

2 stops38h 18m

Chicago O'Hare Intl

Tue 2/3

8:00 am-5:50 pm

2 stops44h 50m

$799

Chiang MaiChicago

CNX - ORD

CNXORD

Chiang Mai

Sat 6/13

11:35 am-12:08 pm

2 stops36h 33m

Chicago O'Hare Intl

Tue 7/21

8:42 pm-10:25 am

2 stops25h 43m

$988

Chiang MaiChicago

CNX - ORD

CNXORD

Chiang Mai

Sat 6/13

11:35 am-12:08 pm

2 stops36h 33m

Chicago O'Hare Intl

Mon 7/20

12:30 am-10:25 am

1 stop21h 55m

$1,060

Phuket CitySt. Louis

HKT - STL

HKTSTL

Phuket City

Thu 1/22

12:20 pm-11:59 pm

2 stops48h 39m

Lambert-St Louis

Sun 1/25

7:04 am-11:20 am

2 stops39h 16m

$1,179

BangkokPeoria

BKK - PIA

BKKPIA

Bangkok Suvarnabhumi

Sun 2/15

4:55 pm-4:50 pm

3 stops36h 55m

Greater Peoria

Thu 2/19

9:00 am-11:25 am

3 stops37h 25m

$1,273

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Tue 2/17

9:55 am-1:54 pm

2 stops40h 59m

Lambert-St Louis

Thu 2/19

7:00 am-4:25 pm

2 stops44h 25m

$1,300

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Tue 2/17

9:55 am-6:11 pm

2 stops45h 16m

Lambert-St Louis

Thu 2/19

6:30 am-5:05 am

2 stops57h 35m

$1,303

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Sun 3/29

5:30 pm-10:58 pm

2 stops41h 28m

Lambert-St Louis

Thu 4/2

10:03 am-6:00 pm

2 stops43h 57m

$1,325

BangkokPeoria

BKK - PIA

BKKPIA

Bangkok Suvarnabhumi

Sun 2/15

4:55 pm-12:43 pm

3 stops32h 48m

Greater Peoria

Thu 2/19

9:00 am-12:20 am

2 stops26h 20m

$1,355

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

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 $1,116 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 $1,009 on momondo.

Can stopping save me money on Thailand to Illinois flights?

You could potentially save up to 42% 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	19h 26m
Direct flights	None

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

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 December 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 1,655 reviews	Search Japan Airlines flights
Korean Air	PriceFrom $902	Free Cancellation	Rating 8.4 1,186 reviews	Search Korean Air flights
ANA	PriceFrom $983	Free Cancellation	Rating 8.4 1,023 reviews	Search ANA flights
EVA Air	PriceFrom $993	Free Cancellation	Rating 8.4 1,296 reviews	Search EVA Air flights
Thai Airways	PriceFrom $994	Free Cancellation	Rating 7.8 366 reviews	Search Thai Airways flights
United Airlines	PriceFrom $1,003	Free Cancellation	Rating 7.4 9,092 reviews	Search United Airlines flights
Cathay Pacific	PriceFrom $1,036	Free Cancellation	Rating 7.6 1,095 reviews	Search Cathay Pacific flights
Turkish Airlines	PriceFrom $1,087	Free Cancellation	Rating 7.3 4,097 reviews	Search Turkish Airlines 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.