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$360+ Cheap flights from Illinois to Thailand

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BKK
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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Cheap flight deals from Illinois to Thailand

Keep the following information in mind while searching for Illinois to Thailand flight deals. Data was last updated October 22, 2025.

Round-trip from

$704
(FlightHub)

One-way from

$360
(Mytrip)

Popular in

June

Cheapest in

September

Average price

$843
From Illinois to Thailand
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One-way flight from Illinois to Thailand
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Highest demand for flights based on searches. 17% potential increase in price ($218 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($40 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 Illinois to Thailand

Cheapest flights from Illinois to Thailand
Explore the most affordable flight options available from Illinois to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

This Trip.com deal was found by Cheapflights users on 10/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/159:22 pmORD - BKK
2 stops48h 53mMultiple Airlines
Sun 12/712:15 pmBKK - ORD
2 stops30h 45mMultiple Airlines
Deal found 10/21$720
This oojo deal was found by Cheapflights users on 10/21. 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.
Wed 12/311:50 amORD - BKK
1 stop27h 30mTurkish Airlines
Wed 12/1710:10 amBKK - ORD
1 stop45h 15mTurkish Airlines
Deal found 10/21$737
This Trip.com deal was found by Cheapflights users on 10/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/159:22 pmORD - BKK
2 stops48h 53mMultiple Airlines
Sat 11/221:45 amBKK - ORD
2 stops41h 40mMultiple Airlines
Deal found 10/21$744
This FlightHub deal was found by Cheapflights users on 10/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:50 amORD - BKK
1 stop27h 30mTurkish Airlines
Thu 12/1810:10 amBKK - ORD
1 stop36h 55mTurkish Airlines
Deal found 10/20$748
This FlightHub deal was found by Cheapflights users on 10/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/211:50 amORD - BKK
1 stop31h 50mTurkish Airlines
Thu 12/115:50 amBKK - ORD
1 stop41h 15mTurkish Airlines
Deal found 10/21$750
This Turkish Airlines deal was found by Cheapflights users on 10/21. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2711:50 amORD - BKK
1 stop27h 30mTurkish Airlines
Wed 12/35:50 amBKK - ORD
1 stop41h 15mTurkish Airlines
Deal found 10/21$765
This lol.travel deal was found by Cheapflights users on 10/20. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1711:15 amORD - BKK
1 stop24h 40mKorean Air
Mon 12/12:05 amBKK - ORD
1 stop19h 25mKorean Air
Deal found 10/20$767
This oojo deal was found by Cheapflights users on 10/20. 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.
Mon 10/272:30 pmORD - HKT
1 stop29h 35mAir India
Sun 11/29:10 amHKT - ORD
2 stops39h 20mAir India
Deal found 10/20$783
This oojo deal was found by Cheapflights users on 10/20. 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.
Tue 11/2511:15 amORD - BKK
1 stop23h 05mKorean Air
Sun 12/1411:15 pmBKK - ORD
1 stop22h 15mKorean Air
Deal found 10/20$784
This oojo deal was found by Cheapflights users on 10/21. 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.
Tue 12/211:50 amORD - BKK
1 stop31h 50mTurkish Airlines
Sat 12/610:10 amBKK - ORD
1 stop36h 55mTurkish Airlines
Deal found 10/21$790
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/194:25 pmORD - BKK
1 stop23h 45mUnited Airlines
Sun 12/149:10 amBKK - ORD
1 stop35h 10mUnited Airlines
Deal found 10/21$797
This CrystalTravel deal was found by Cheapflights users on 10/21. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/172:35 pmORD - BKK
1 stop32h 30mCathay Pacific
Tue 11/257:55 amBKK - ORD
1 stop18h 00mCathay Pacific
Deal found 10/21$798

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Thailand 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 22, 2025.
Use the filters below to find and compare flights from Illinois to Thailand that are best for you.

Fly from

Illinois

Fly to

Thailand

Route

Depart

Return

Price

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Tue 1/13

11:25 am-12:55 am

1 stop24h 30m

Bangkok Suvarnabhumi

Mon 3/2

9:40 am-8:40 am

1 stop36h 00m

$824

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Wed 1/14

11:25 am-12:55 am

1 stop24h 30m

Bangkok Suvarnabhumi

Wed 2/25

2:05 am-8:40 am

1 stop19h 35m

$824

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Wed 11/19

7:10 am-11:25 am

2 stops39h 15m

Bangkok Suvarnabhumi

Wed 11/26

4:55 pm-5:16 am

2 stops25h 21m

$830

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Tue 1/6

7:30 am-12:45 am

2 stops28h 15m

Bangkok Suvarnabhumi

Wed 1/28

12:55 am-9:56 pm

2 stops34h 01m

$835

ChicagoBangkok

MDW - BKK

MDWBKK

Chicago Midway

Tue 11/11

6:00 am-12:45 am

2 stops29h 45m

Bangkok Suvarnabhumi

Sun 11/23

11:15 pm-11:40 pm

2 stops37h 25m

$835

ChicagoBangkok

MDW - BKK

MDWBKK

Chicago Midway

Tue 1/13

5:59 pm-11:20 pm

2 stops40h 21m

Bangkok Suvarnabhumi

Tue 2/24

12:55 am-6:34 pm

2 stops30h 39m

$841

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Thu 1/15

12:53 pm-11:25 am

3 stops33h 32m

Bangkok Suvarnabhumi

Tue 2/10

4:55 pm-6:30 am

2 stops26h 35m

$863

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

Tue 11/4

2:35 pm-11:20 am

1 stop31h 45m

Phuket City

Wed 11/19

12:20 pm-12:55 pm

1 stop37h 35m

$868

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Wed 11/19

5:23 am-12:55 am

2 stops30h 32m

Bangkok Suvarnabhumi

Tue 11/25

2:05 am-8:30 am

1 stop19h 25m

$875

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Sat 1/17

7:15 am-11:20 pm

2 stops27h 05m

Bangkok Suvarnabhumi

Tue 1/20

9:40 am-11:44 pm

2 stops27h 04m

$885

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

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

Have a flexible travel schedule? Discover the best time to fly to Thailand from Illinois 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 Illinois to Thailand

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

Currently, August is the cheapest month in which you can book a flight from Illinois to Thailand (average of $644). Flying from Illinois to Thailand in June is currently the most expensive (average of $840). 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 IL to TH?

Find hourly flight availability from Illinois to Thailand. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 22, 2025.

When flying from Illinois to Thailand, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 26% versus a flight in the afternoon.

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

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

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

Related info for your journey

Find useful and relevant information for your journey from Illinois to Thailand. 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 Illinois to Thailand?

    Korean Air, United Airlines, and Delta can get you from Illinois to Thailand in just under 24h 30m. Your travel time can differ by up to 14h 45m. Illinois and Thailand are separated by a distance of 8545 mi. This flight may include one or multiple stops.

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

    The cheapest airline one-way is Air India, with whom users have recently found tickets for as low as $444. However, be on the lookout for offers from Turkish Airlines and Korean Air, as they are both options that can get you from Illinois to Thailand for a low price.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Thailand 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 Illinois to Thailand?

    Currently, August is the cheapest month in which you can book a flight from Illinois to Thailand (average of $644). Flying from Illinois to Thailand in June is currently the most expensive (average of $840). 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 Illinois to Thailand

See prices for flight routes from nearby airports that may be better suited for you.
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Ontario to Haneda flights

Top 10 airlines flying from Illinois to Thailand

Discover the top 10 airlines that operate flights from Illinois to Thailand. 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 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$619Average$919FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$677Average$1,017FlexibilityNo cancel feeOn-time72%
ANACheapest$681Average$875FlexibilityNo cancel feeOn-time80%
Korean AirCheapest$698Average$1,085FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$708Average$889FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$710Average$1,639FlexibilityNo cancel feeOn-time71%
IndiGoCheapest$735Average$1,260FlexibilityNo cancel feeOn-time80%
DeltaCheapest$745Average$1,260FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$751Average$1,009FlexibilityNo cancel feeOn-time77%
Etihad AirwaysCheapest$820Average$1,130FlexibilityNo cancel feeOn-time75%

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