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Illinois

$452+ Cheap flights from Thailand to Illinois

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ORD
Nov 12 — Nov 191
Wed 11/12
Wed 11/19
1 adult, Economy
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Cheap flight deals from Thailand to Illinois

Keep the following information in mind while searching for Thailand to Illinois flight deals. Data was last updated October 13, 2025.

Round-trip from

$779
(SmartFares)

One-way from

$452
(Mytrip)

Popular in

January

Cheapest in

February

Average price

$1,088
From Thailand to Illinois
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One-way flight from Thailand to Illinois
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($33 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Thailand to Illinois

Cheapest flights from Thailand to Illinois
Explore the most affordable flight options available from Thailand to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 13, 2025.

This SmartFares deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/91:20 pmBKK - ORD
2 stops30h 02mMultiple Airlines
Sun 11/168:00 amORD - BKK
2 stops39h 00mMultiple Airlines
Deal found 10/12$779
This oojo deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:45 pmBKK - ORD
2 stops48h 36mMultiple Airlines
Wed 1/73:35 pmORD - BKK
2 stops37h 15mMultiple Airlines
Deal found 10/12$781
This Kiwi.com deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1711:25 amBKK - ORD
2 stops31h 35mMultiple Airlines
Mon 1/51:30 pmORD - BKK
1 stop29h 20mMultiple Airlines
Deal found 10/13$788
This Mytrip deal was found by Cheapflights users on 10/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/282:10 pmBKK - ORD
2 stops30h 25mMultiple Airlines
Thu 11/203:40 pmORD - BKK
2 stops33h 50mMultiple Airlines
Deal found 10/10$805
This EaseMyTrip deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/261:20 pmBKK - ORD
2 stops30h 08mMultiple Airlines
Wed 12/33:35 pmORD - BKK
2 stops31h 25mMultiple Airlines
Deal found 10/12$808
This SmartFares deal was found by Cheapflights users on 10/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2511:50 pmBKK - ORD
2 stops43h 38mMultiple Airlines
Tue 12/28:00 amORD - BKK
2 stops39h 00mMultiple Airlines
Deal found 10/11$812
This Kiwi.com deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/171:10 amBKK - ORD
2 stops43h 18mMultiple Airlines
Wed 1/141:30 pmORD - BKK
1 stop29h 20mMultiple Airlines
Deal found 10/12$830
This Kiwi.com deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/151:10 amBKK - ORD
2 stops43h 18mMultiple Airlines
Sun 1/111:30 pmORD - BKK
1 stop29h 20mMultiple Airlines
Deal found 10/12$833
This Gotogate deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/145:50 amBKK - ORD
1 stop41h 15mMultiple Airlines
Mon 1/121:30 pmORD - BKK
1 stop29h 20mMultiple Airlines
Deal found 10/12$842
This Kiwi.com deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1612:15 pmBKK - ORD
2 stops32h 13mMultiple Airlines
Wed 1/141:30 pmORD - BKK
1 stop29h 20mMultiple Airlines
Deal found 10/12$845
This SmartFares deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2711:25 amCNX - ORD
2 stops37h 38mMultiple Airlines
Thu 12/410:00 amORD - CNX
2 stops35h 25mMultiple Airlines
Deal found 10/13$987
This SmartFares deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/202:15 amBKK - STL
2 stops58h 39mMultiple Airlines
Tue 12/97:00 amSTL - BKK
2 stops38h 45mMultiple Airlines
Deal found 10/12$994

Cheapflights Fare Finder

 
Customize your flight search to find flights from Thailand to Illinois 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, Cheapflights users made 2,558,603 searches. Data last updated October 13, 2025.
Use the filters below to find and compare flights from Thailand to Illinois that are best for you.

Fly from

Thailand

Fly to

Illinois

Route

Depart

Return

Price

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Thu 11/20

2:15 am-11:54 pm

2 stops58h 39m

Lambert-St Louis

Tue 12/9

7:00 am-10:45 am

2 stops38h 45m

$994

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Tue 12/16

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

$1,021

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Fri 12/19

9:40 am-11:59 pm

2 stops27h 19m

Chicago O'Hare Intl

Fri 1/30

7:30 am-12:45 am

2 stops28h 15m

$1,021

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Thu 11/20

2:05 am-8:30 am

1 stop19h 25m

Chicago O'Hare Intl

Tue 1/13

11:25 am-12:55 am

1 stop24h 30m

$1,021

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Wed 12/17

9:40 am-9:40 pm

2 stops25h 00m

Chicago O'Hare Intl

Mon 1/26

7:00 am-11:20 pm

2 stops27h 20m

$1,021

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Tue 12/16

12:55 am-8:30 am

1 stop20h 35m

Chicago O'Hare Intl

Fri 3/27

12:25 pm-12:55 am

1 stop24h 30m

$1,021

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Sun 12/21

9:40 am-9:34 pm

2 stops24h 54m

Chicago O'Hare Intl

Fri 1/30

7:00 am-12:45 am

2 stops28h 45m

$1,021

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Wed 10/22

9:40 pm-9:30 am

1 stop23h 50m

Chicago O'Hare Intl

Tue 10/28

12:15 pm-11:20 pm

1 stop23h 05m

$1,021

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Mon 12/22

9:30 pm-12:54 pm

2 stops28h 24m

Chicago O'Hare Intl

Thu 1/29

7:30 am-12:45 am

2 stops28h 15m

$1,021

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Mon 11/17

12:55 am-9:25 pm

2 stops33h 30m

Chicago O'Hare Intl

Sun 1/11

7:30 am-12:45 am

2 stops28h 15m

$1,024

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 60 results
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Best time to book a flight from Thailand to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Thailand with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Thailand to Illinois

What is the cheapest month to book a flight from Thailand to Illinois?

Currently, December is the cheapest month in which you can book a flight from Thailand to Illinois (average of $786). Flying from Thailand to Illinois in January is currently the most expensive (average of $1,095). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from TH to IL?

Find hourly flight availability from Thailand to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 13, 2025.

One of the essential ways to save on airfare from Thailand to Illinois is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 64% on airfare.

What is the cheapest day to fly from Thailand to Illinois?

Use this chart to determine the cheapest time to fly round-trip from Thailand to Illinois. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Thailand to Illinois flight should consider departing on Tuesday evenings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated October 13, 2025.
Read through reviews of airlines operating flights from Thailand to Illinois, such as EVA Air, Korean Air, and ANA. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,250 reviews

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.0

Overall

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
EVA Air
8.4
Very good
1,250 reviews
EVA Air
8.4
Very good
1,250 reviews

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.0

Overall

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
Korean Air
8.4
Very good
1,149 reviews
EVA Air
8.4
Very good
1,250 reviews

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.0

Overall

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
ANA
8.4
Very good
984 reviews
EVA Air
8.4
Very good
1,250 reviews

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.0

Overall

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
Japan Airlines
8.3
Very good
1,578 reviews
EVA Air
8.4
Very good
1,250 reviews

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.0

Overall

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
United Airlines
7.4
Good
8,974 reviews
EVA Air
8.4
Very good
1,250 reviews

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Food

8.0

Overall

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak

Related info for your journey

Find useful and relevant information for your journey from Thailand to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Thailand to Illinois?

    Departing from Thailand to Illinois will take you 19h 25m. Airlines will cover a distance of 8545 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Thailand to Illinois one-way?

    The cheapest airlines for a one-way flight from Thailand to Illinois are Air Canada ($583), Delta ($604), and Korean Air ($648).

  • Can I find deals for flights from Thailand to Illinois that include hotel bookings?

    Yes. In addition to deals on Thailand to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Thailand to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Thailand to Illinois.

  • Can I find deals for business class flights from Thailand to Illinois?

    Yes. Cheapflights offers flight deals from Thailand to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Thailand to Illinois?

    Currently, December is the cheapest month in which you can book a flight from Thailand to Illinois (average of $786). Flying from Thailand to Illinois in January is currently the most expensive (average of $1,095). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Thailand to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Thailand to Illinois

Discover the top 8 airlines that operate flights from Thailand to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$548Average$1,089FlexibilityNo cancel feeOn-timeN/A
Japan AirlinesCheapest$681Average$991FlexibilityNo cancel feeOn-time79%
Korean AirCheapest$902Average$1,127FlexibilityNo cancel feeOn-time81%
ANACheapest$983Average$1,090FlexibilityNo cancel feeOn-time80%
Thai AirwaysCheapest$994Average$1,155FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$996Average$1,128FlexibilityNo cancel feeOn-time69%
EVA AirCheapest$1,007Average$1,166FlexibilityNo cancel feeOn-time74%
Cathay PacificCheapest$1,021Average$1,069FlexibilityNo cancel feeOn-time72%

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