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$393+ 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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BKK
fev 21 — fev 281
sáb 2/21
sáb 2/28
1 adult, Economy
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Cheap 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 janeiro 22, 2026.

This Kissandfly.com deal was found by Cheapflights users on 1/20. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 3/82:30 pm
ORD
-
HKT
1 stop29h 35m
Air India
ter 3/248:30 pm
HKT
-
ORD
1 stop28h 00m
Air India
Deal found 1/20$735
This Air India deal was found by Cheapflights users on 1/20. 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 Air India is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 4/51:10 pm
ORD
-
BKK
1 stop39h 45m
Air India
dom 4/195:55 pm
BKK
-
ORD
1 stop29h 15m
Air India
Deal found 1/20$796
This Korean Air deal was found by Cheapflights users on 1/20. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 10/1912:10 pm
ORD
-
BKK
1 stop21h 35m
Korean Air
qua 11/412:55 am
BKK
-
ORD
1 stop20h 35m
Korean Air
Deal found 1/20$797
This FlightHub deal was found by Cheapflights users on 1/21. 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.
dom 3/82:30 pm
ORD
-
BKK
1 stop41h 50m
Air India
sáb 3/143:10 pm
BKK
-
ORD
2 stops33h 20m
Air India
Deal found 1/21$798
This Justfly.com deal was found by Cheapflights users on 1/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 10/161:10 pm
ORD
-
BKK
1 stop43h 15m
Air India
dom 11/18:40 am
BKK
-
ORD
2 stops39h 30m
Air India
Deal found 1/20$799
This oojo deal was found by Cheapflights users on 1/20. 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.
qua 1/281:30 pm
ORD
-
BKK
1 stop38h 25m
Air India
dom 2/88:50 am
BKK
-
ORD
2 stops39h 40m
Air India
Deal found 1/20$800
This FlightHub deal was found by Cheapflights users on 1/20. 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.
qua 4/812:30 am
ORD
-
BKK
1 stop22h 25m
EVA Air
qui 4/168:30 am
BKK
-
ORD
1 stop24h 30m
EVA Air
Deal found 1/20$801
This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 1/212:40 pm
ORD
-
BKK
2 stops31h 45m
United Airlines
seg 1/269:10 am
BKK
-
ORD
1 stop19h 00m
United Airlines
Deal found 1/20$802
This KAYAK deal was found by Cheapflights users on 1/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 9/68:10 pm
ORD
-
BKK
1 stop21h 00m
Turkish Airlines
qui 9/1710:45 pm
BKK
-
ORD
1 stop22h 55m
Turkish Airlines
Deal found 1/19$803
This oojo deal was found by Cheapflights users on 1/22. 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.
sex 5/11:10 pm
ORD
-
BKK
1 stop37h 05m
Air India
sáb 5/163:15 pm
BKK
-
ORD
2 stops31h 55m
Air India
Deal found 1/22$804
This Air India deal was found by Cheapflights users on 1/20. 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 Air India is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 2/111:30 pm
ORD
-
BKK
1 stop29h 20m
Air India
dom 2/225:55 pm
BKK
-
ORD
1 stop30h 35m
Air India
Deal found 1/20$805
This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 1/211:55 pm
ORD
-
BKK
3 stops32h 30m
United Airlines
qua 1/289:10 am
BKK
-
ORD
1 stop19h 00m
United Airlines
Deal found 1/20$806

Find flight deals from Illinois to Thailand

Keep the following information in mind while searching for Illinois to Thailand flight deals. Data was last updated janeiro 22, 2026.

Round-trip from

$735
(Kissandfly.com)

One-way from

$393
(CheapOair)

Popular in

December

Cheapest in

September

Average price

$911
From Illinois to Thailand
Search Deals
One-way flight from Illinois to Thailand
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 janeiro 22, 2026.
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

sex 4/3

1:10 pm-2:15 pm

1 stop37h 05m

Bangkok Suvarnabhumi

dom 4/12

3:15 pm-11:10 am

1 stop31h 55m

$796

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

qua 3/4

11:25 am-12:45 am

1 stop24h 20m

Bangkok Suvarnabhumi

ter 3/17

2:05 am-9:40 am

1 stop19h 35m

$797

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

qua 4/15

1:10 pm-4:55 pm

1 stop39h 45m

Bangkok Suvarnabhumi

dom 4/26

5:55 pm-11:10 am

1 stop29h 15m

$801

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

qua 4/22

8:51 am-9:35 am

3 stops36h 44m

Bangkok Suvarnabhumi

dom 5/3

9:35 am-3:15 pm

1 stop41h 40m

$807

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

ter 3/3

6:30 am-12:45 am

2 stops29h 15m

Bangkok Suvarnabhumi

seg 3/9

2:05 am-12:39 am

2 stops34h 34m

$808

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

qua 4/8

8:45 am-4:35 am

2 stops31h 50m

Bangkok Suvarnabhumi

qua 4/22

7:00 am-9:38 pm

2 stops26h 38m

$816

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

qua 4/15

1:10 pm-8:25 pm

1 stop43h 15m

Bangkok Suvarnabhumi

sáb 4/25

5:55 pm-11:10 am

1 stop29h 15m

$831

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

dom 3/22

2:30 pm-4:55 pm

1 stop38h 25m

Bangkok Suvarnabhumi

dom 3/29

5:55 pm-11:10 am

1 stop29h 15m

$831

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

qua 4/8

6:00 am-4:35 am

2 stops34h 35m

Bangkok Suvarnabhumi

seg 4/20

7:00 am-12:45 am

2 stops29h 45m

$836

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

ter 4/7

12:55 pm-9:35 am

3 stops32h 40m

Bangkok Suvarnabhumi

qui 4/23

9:35 am-5:59 am

2 stops32h 24m

$837

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

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 $819). 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 janeiro 22, 2026.

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 morning, which can drop the price by up to 30% 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 March 30, 2025.

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?

    Air India, Korean Air, and United Airlines can get you from Illinois to Thailand in just under 24h 20m. Your travel time can differ by up to 12h 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 $308. 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, 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 $819). 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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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 janeiro 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$601Average$888FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$666Average$1,039FlexibilityNo cancel feeOn-time72%
ANACheapest$681Average$1,080FlexibilityNo cancel feeOn-time80%
Korean AirCheapest$698Average$1,063FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$707Average$953FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$710Average$1,072FlexibilityNo cancel feeOn-time77%
DeltaCheapest$718Average$1,216FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$744Average$1,099FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$779Average$1,134FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$823Average$1,053FlexibilityNo cancel feeOn-time67%

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