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$414+ 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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BKK
Dec 12 — Dec 191
Fri 12/12
Fri 12/19
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 November 12, 2025.

Round-trip from

$557
(oojo)

One-way from

$414
(Trip.com)

Popular in

June

Cheapest in

September

Average price

$878
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 ($213 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 12, 2025.

This CheapOair deal was found by Cheapflights users on 11/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/178:20 pmORD - BKK
1 stop23h 20mTurkish Airlines
Tue 12/2311:15 pmBKK - ORD
1 stop23h 50mTurkish Airlines
Deal found 11/10$759
This CrystalTravel deal was found by Cheapflights users on 11/10. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/174:25 pmORD - BKK
1 stop23h 45mANA
Wed 12/172:20 pmBKK - ORD
1 stop30h 00mANA
Deal found 11/10$760
This CrystalTravel deal was found by Cheapflights users on 11/11. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/174:25 pmORD - BKK
1 stop25h 05mANA
Sun 12/212:20 pmBKK - ORD
1 stop30h 00mANA
Deal found 11/11$769
This Mytrip deal was found by Cheapflights users on 11/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:06 pmORD - BKK
2 stops33h 29mMultiple Airlines
Thu 12/1112:15 pmBKK - ORD
2 stops30h 50mMultiple Airlines
Deal found 11/11$771
This CrystalTravel deal was found by Cheapflights users on 11/11. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/274:25 pmORD - BKK
1 stop25h 05mANA
Thu 12/117:10 amBKK - ORD
1 stop19h 40mANA
Deal found 11/11$772
This Turkish Airlines deal was found by Cheapflights users on 11/10. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2611:50 amORD - BKK
1 stop38h 15mTurkish Airlines
Thu 12/1111:15 pmBKK - ORD
1 stop23h 50mTurkish Airlines
Deal found 11/10$779
This Flightnetwork deal was found by Cheapflights users on 11/10. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/174:25 pmORD - BKK
1 stop34h 55mANA
Wed 12/32:20 pmBKK - ORD
1 stop30h 00mANA
Deal found 11/10$794
This CrystalTravel deal was found by Cheapflights users on 11/10. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/164:25 pmORD - BKK
1 stop23h 45mANA
Sun 12/212:20 pmBKK - ORD
1 stop30h 00mANA
Deal found 11/10$806
This FlightHub deal was found by Cheapflights users on 11/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/174:25 pmORD - BKK
1 stop23h 45mANA
Tue 12/237:10 amBKK - ORD
1 stop19h 40mANA
Deal found 11/11$809
This Ovago deal was found by Cheapflights users on 11/12. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/182:35 pmORD - HKT
1 stop31h 45mCathay Pacific
Tue 12/2312:20 pmHKT - ORD
1 stop37h 35mCathay Pacific
Deal found 11/12$836
This Vliegwinkel deal was found by Cheapflights users on 11/11. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/172:35 pmORD - HKT
1 stop31h 45mCathay Pacific
Wed 12/36:35 pmHKT - ORD
1 stop31h 20mCathay Pacific
Deal found 11/11$843
This oojo deal was found by Cheapflights users on 11/12. 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.
Thu 11/1311:30 pmORD - CNX
1 stop22h 05mEVA Air
Thu 11/2011:50 amCNX - ORD
1 stop20h 45mEVA Air
Deal found 11/12$874

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 November 12, 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

Thu 1/15

1:10 pm-11:20 pm

1 stop21h 10m

Bangkok Suvarnabhumi

Mon 2/16

9:25 am-7:35 am

1 stop35h 10m

$793

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Tue 2/10

6:47 am-11:25 am

2 stops39h 38m

Bangkok Suvarnabhumi

Wed 2/18

4:55 pm-5:01 am

2 stops25h 06m

$830

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Mon 11/17

7:10 am-11:25 am

2 stops39h 15m

Bangkok Suvarnabhumi

Mon 11/24

4:55 pm-7:30 pm

2 stops39h 35m

$838

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Tue 2/10

4:16 pm-11:25 am

2 stops30h 09m

Bangkok Suvarnabhumi

Mon 2/16

4:55 pm-5:01 am

2 stops25h 06m

$853

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Tue 1/6

6:47 am-11:25 am

2 stops39h 38m

Bangkok Suvarnabhumi

Tue 3/3

4:55 pm-10:49 am

3 stops30h 54m

$858

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Mon 2/9

6:47 am-11:25 am

2 stops39h 38m

Bangkok Suvarnabhumi

Mon 3/2

4:55 pm-6:21 am

2 stops26h 26m

$861

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Thu 3/5

2:35 pm-6:50 pm

1 stop39h 15m

Chiang Mai

Mon 3/9

7:40 pm-1:55 pm

1 stop30h 15m

$868

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Thu 1/15

1:10 pm-11:20 pm

1 stop21h 10m

Bangkok Suvarnabhumi

Mon 1/26

7:35 pm-7:35 am

2 stops49h 00m

$870

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Sun 2/8

2:35 pm-11:25 am

3 stops31h 50m

Bangkok Suvarnabhumi

Thu 2/19

4:55 pm-6:21 am

2 stops26h 26m

$876

ChicagoBangkok

ORD - DMK

ORDDMK

Chicago O'Hare Intl

Mon 1/26

1:10 pm-4:20 am

2 stops26h 10m

Bangkok Don Mueang Intl

Sat 1/31

4:50 pm-11:30 am

2 stops31h 40m

$949

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

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 $642). Flying from Illinois to Thailand in June is currently the most expensive (average of $867). 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 November 12, 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 21% 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?

    Etihad Airways, United Airlines, and Cathay Pacific can get you from Illinois to Thailand in just under 21h 10m. Your travel time can differ by up to 18h 28m. 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 IndiGo, with whom users have recently found tickets for as low as $422. However, be on the lookout for offers from Air India and Japan Airlines, 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 $642). Flying from Illinois to Thailand in June is currently the most expensive (average of $867). 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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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 November 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$619Average$919FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$674Average$1,037FlexibilityNo cancel feeOn-time72%
ANACheapest$681Average$868FlexibilityNo cancel feeOn-time80%
Korean AirCheapest$698Average$1,080FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$708Average$890FlexibilityNo cancel feeOn-time69%
IndiGoCheapest$735Average$1,260FlexibilityNo cancel feeOn-time80%
Turkish AirlinesCheapest$742Average$994FlexibilityNo cancel feeOn-time77%
DeltaCheapest$745Average$1,257FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$800Average$1,133FlexibilityNo cancel feeOn-time75%
Japan AirlinesCheapest$825Average$976FlexibilityNo cancel feeOn-time79%

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