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$317+ 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BKK
Aug 26 — Sep 21
Tue 8/26
Tue 9/2
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 August 21, 2025.

Round-trip from

$623
(Ovago)

One-way from

$317
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$942
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. 5% potential increase in price ($62 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 21, 2025.

This Ovago deal was found by Cheapflights users on 8/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/62:40 pmORD - HKT
1 stop31h 40mCathay Pacific
Sun 11/1612:20 pmHKT - ORD
1 stop37h 40mCathay Pacific
Deal found 8/20$623
This Ovago deal was found by Cheapflights users on 8/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/272:40 pmORD - HKT
1 stop31h 40mCathay Pacific
Tue 12/912:20 pmHKT - ORD
1 stop37h 40mCathay Pacific
Deal found 8/20$626
This Ovago deal was found by Cheapflights users on 8/21. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/14:00 pmORD - HKT
1 stop37h 20mCathay Pacific
Wed 10/1511:50 amHKT - ORD
1 stop38h 35mCathay Pacific
Deal found 8/21$628
This Ovago deal was found by Cheapflights users on 8/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/214:00 pmORD - HKT
1 stop30h 50mCathay Pacific
Mon 11/312:20 pmHKT - ORD
1 stop37h 40mCathay Pacific
Deal found 8/20$636
This Ovago deal was found by Cheapflights users on 8/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/44:00 pmORD - HKT
1 stop30h 50mCathay Pacific
Tue 9/3011:50 amHKT - ORD
1 stop38h 35mCathay Pacific
Deal found 8/20$639
This FlightHub deal was found by Cheapflights users on 8/20. 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 11/262:40 pmORD - HKT
1 stop37h 55mCathay Pacific
Mon 12/812:20 pmHKT - ORD
1 stop37h 40mCathay Pacific
Deal found 8/20$642
This Ovago deal was found by Cheapflights users on 8/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/174:00 pmORD - HKT
1 stop30h 50mCathay Pacific
Wed 10/16:20 pmHKT - ORD
1 stop32h 05mCathay Pacific
Deal found 8/20$645
This Ovago deal was found by Cheapflights users on 8/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/252:40 pmORD - HKT
1 stop31h 40mCathay Pacific
Wed 12/106:35 pmHKT - ORD
1 stop31h 25mCathay Pacific
Deal found 8/20$651
This Ovago deal was found by Cheapflights users on 8/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/34:00 pmORD - HKT
1 stop37h 20mCathay Pacific
Mon 9/86:20 pmHKT - ORD
1 stop32h 05mCathay Pacific
Deal found 8/20$654
This FlightHub deal was found by Cheapflights users on 8/20. 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.
Thu 9/44:00 pmORD - HKT
1 stop30h 50mCathay Pacific
Wed 10/16:20 pmHKT - ORD
1 stop32h 05mCathay Pacific
Deal found 8/20$657
This Ovago deal was found by Cheapflights users on 8/21. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/154:00 pmORD - HKT
1 stop30h 50mCathay Pacific
Mon 9/2211:50 amHKT - ORD
1 stop38h 35mCathay Pacific
Deal found 8/21$658
This Cathay Pacific deal was found by Cheapflights users on 8/21. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/184:00 pmORD - BKK
1 stop30h 00mCathay Pacific
Wed 10/1511:00 amBKK - ORD
1 stop39h 25mCathay Pacific
Deal found 8/21$680

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 August 21, 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

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

Wed 10/1

4:00 pm-5:20 pm

1 stop37h 20m

Phuket City

Wed 10/15

11:50 am-2:25 pm

1 stop38h 35m

$628

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

Thu 11/6

2:40 pm-11:20 am

1 stop31h 40m

Phuket City

Sun 11/16

12:20 pm-1:00 pm

1 stop37h 40m

$629

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

Wed 9/17

4:00 pm-5:20 pm

1 stop37h 20m

Phuket City

Wed 9/24

6:20 pm-2:25 pm

1 stop32h 05m

$658

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

Mon 9/15

4:00 pm-5:20 pm

1 stop37h 20m

Phuket City

Mon 9/22

6:20 pm-2:25 pm

1 stop32h 05m

$658

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

Tue 9/16

4:00 pm-10:50 am

1 stop30h 50m

Phuket City

Tue 9/23

11:50 am-2:25 pm

1 stop38h 35m

$658

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

Tue 10/21

4:00 pm-10:50 am

1 stop30h 50m

Phuket City

Wed 11/5

6:35 pm-1:00 pm

1 stop31h 25m

$664

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Mon 9/8

12:40 pm-4:35 am

1 stop27h 55m

Bangkok Suvarnabhumi

Wed 9/24

9:35 am-3:10 pm

1 stop41h 35m

$698

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Thu 8/28

12:50 pm-4:35 am

1 stop27h 45m

Bangkok Suvarnabhumi

Mon 9/1

9:35 am-3:10 pm

1 stop41h 35m

$698

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Mon 9/1

12:40 pm-4:35 am

1 stop27h 55m

Bangkok Suvarnabhumi

Wed 9/17

9:35 am-3:10 pm

1 stop41h 35m

$698

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Thu 9/4

12:40 pm-4:35 am

1 stop27h 55m

Bangkok Suvarnabhumi

Sun 9/7

9:35 am-3:10 pm

1 stop41h 35m

$698

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

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, September is the cheapest month in which you can book a flight from Illinois to Thailand (average of $931). Flying from Illinois to Thailand in December is currently the most expensive (average of $1,546). 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 August 21, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Thailand as you normally would.

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?

    Cathay Pacific, United Airlines, and Delta can get you from Illinois to Thailand in just under 27h 45m. Your travel time can differ by up to 9h 35m. Illinois and Thailand are separated by a distance of 8559 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 $358. However, be on the lookout for offers from Turkish Airlines and Cathay Pacific, 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, September is the cheapest month in which you can book a flight from Illinois to Thailand (average of $931). Flying from Illinois to Thailand in December is currently the most expensive (average of $1,546). 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

Browse thousands of different options on Cheapflights for your next trip

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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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Los Angeles to Narita flights
John F Kennedy Intl to Haneda flights
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Dulles Intl to Suvarnabhumi flights
Seattle to Suvarnabhumi flights
San Francisco to Suvarnabhumi flights
LaGuardia to Suvarnabhumi flights
O'Hare Intl to Haneda flights
Hobby to Haneda flights
John F Kennedy Intl to Manila flights
Newark to Mumbai flights
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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 August 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
EmiratesCheapest$503Average$1,391FlexibilityNo cancel feeOn-time75%
Air IndiaCheapest$619Average$926FlexibilityNo cancel feeOn-timeN/A
ANACheapest$697Average$960FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$710Average$912FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$710Average$1,186FlexibilityNo cancel feeOn-time71%
Cathay PacificCheapest$711Average$1,061FlexibilityNo cancel feeOn-time72%
Korean AirCheapest$755Average$1,145FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$789Average$1,068FlexibilityNo cancel feeOn-time77%
Etihad AirwaysCheapest$820Average$1,186FlexibilityNo cancel feeOn-time75%
Japan AirlinesCheapest$857Average$984FlexibilityNo cancel feeOn-time79%

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