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$352+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BKK
feb. 14 — feb. 211
sáb. 2/14
sáb. 2/21
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 enero 15, 2026.

Round-trip from

$650
(oojo)

One-way from

$352
(oojo)

Popular in

December

Cheapest in

September

Average price

$920
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. 3% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 enero 15, 2026.

This oojo deal was found by Cheapflights users on 1/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/191:10 pm
ORD
-
HKT
1 stop42h 35m
Air India
jue. 10/298:20 am
HKT
-
ORD
2 stops38h 50m
Air India
Deal found 1/13$633
This oojo deal was found by Cheapflights users on 1/12. 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.
dom. 11/291:10 pm
ORD
-
HKT
1 stop29h 10m
Air India
mar. 12/88:45 pm
HKT
-
ORD
2 stops27h 25m
Air India
Deal found 1/12$634
This oojo deal was found by Cheapflights users on 1/14. 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.
lun. 3/301:10 pm
ORD
-
HKT
1 stop30h 10m
Air India
dom. 4/58:45 pm
HKT
-
ORD
2 stops26h 25m
Air India
Deal found 1/14$650
This oojo deal was found by Cheapflights users on 1/14. 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.
lun. 8/311:10 pm
ORD
-
HKT
1 stop30h 10m
Air India
dom. 9/138:20 am
HKT
-
ORD
2 stops38h 50m
Air India
Deal found 1/14$663
This oojo deal was found by Cheapflights users on 1/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/82:30 pm
ORD
-
HKT
1 stop41h 00m
Air India
mar. 3/179:10 am
HKT
-
ORD
2 stops39h 20m
Air India
Deal found 1/13$664
This oojo deal was found by Cheapflights users on 1/14. 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.
lun. 2/231:30 pm
ORD
-
HKT
1 stop29h 35m
Air India
sáb. 2/289:10 am
HKT
-
ORD
2 stops39h 20m
Air India
Deal found 1/14$667
This oojo deal was found by Cheapflights users on 1/14. 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.
dom. 10/111:10 pm
ORD
-
HKT
1 stop30h 10m
Air India
sáb. 10/178:20 am
HKT
-
ORD
2 stops38h 50m
Air India
Deal found 1/14$671
This oojo deal was found by Cheapflights users on 1/14. 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.
vie. 3/61:30 pm
ORD
-
HKT
1 stop41h 00m
Air India
sáb. 3/149:10 am
HKT
-
ORD
2 stops39h 20m
Air India
Deal found 1/14$675
This oojo deal was found by Cheapflights users on 1/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/41:30 pm
ORD
-
HKT
1 stop29h 35m
Air India
mar. 3/108:30 pm
HKT
-
ORD
2 stops28h 00m
Air India
Deal found 1/13$677
This Justfly.com deal was found by Cheapflights users on 1/14. 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.
mié. 9/161:10 pm
ORD
-
HKT
1 stop30h 10m
Air India
jue. 10/18:45 pm
HKT
-
ORD
2 stops26h 25m
Air India
Deal found 1/14$679
This oojo deal was found by Cheapflights users on 1/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/151:10 pm
ORD
-
HKT
1 stop42h 35m
Air India
dom. 5/178:20 am
HKT
-
ORD
2 stops38h 50m
Air India
Deal found 1/13$682
This KAYAK deal was found by Cheapflights users on 1/15. 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.
lun. 9/71:10 pm
ORD
-
BKK
1 stop37h 05m
Air India
sáb. 9/268:40 am
BKK
-
ORD
2 stops38h 30m
Air India
Deal found 1/15$796

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 enero 15, 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

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

lun. 5/4

1:10 pm-7:45 pm

1 stop42h 35m

Phuket City

dom. 5/10

8:45 pm-11:10 am

2 stops26h 25m

$711

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

lun. 3/16

2:30 pm-7:30 pm

1 stop41h 00m

Phuket City

sáb. 4/4

8:20 am-11:10 am

1 stop38h 50m

$746

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

lun. 2/23

1:30 pm-8:05 am

1 stop29h 35m

Phuket City

sáb. 2/28

9:10 am-11:30 am

1 stop39h 20m

$746

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

dom. 3/8

2:30 pm-7:30 pm

1 stop41h 00m

Phuket City

mar. 3/24

9:10 am-12:30 pm

2 stops39h 20m

$750

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

dom. 3/8

2:30 pm-8:05 am

1 stop29h 35m

Phuket City

sáb. 3/14

9:10 am-12:30 pm

1 stop39h 20m

$776

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

mar. 3/17

12:25 pm-11:20 pm

1 stop22h 55m

Bangkok Suvarnabhumi

mar. 3/24

2:05 am-9:40 am

1 stop19h 35m

$796

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

mié. 2/25

11:25 am-1:25 pm

1 stop37h 00m

Bangkok Suvarnabhumi

mar. 3/24

12:55 am-9:40 am

1 stop20h 45m

$797

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

mar. 3/3

5:25 am-12:45 am

2 stops30h 20m

Bangkok Suvarnabhumi

lun. 4/20

9:50 am-9:53 pm

2 stops24h 03m

$808

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

mar. 1/27

7:30 am-12:45 am

2 stops28h 15m

Bangkok Suvarnabhumi

mié. 3/4

9:40 am-11:56 pm

2 stops27h 16m

$808

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

mié. 2/4

7:30 am-12:55 am

2 stops28h 25m

Bangkok Suvarnabhumi

mar. 3/10

2:05 am-9:10 pm

2 stops31h 05m

$808

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

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 $818). 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 enero 15, 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 Delta can get you from Illinois to Thailand in just under 22h 55m. Your travel time can differ by up to 19h 40m. 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 $818). 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 enero 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$606Average$896FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$666Average$1,040FlexibilityNo cancel feeOn-time72%
ANACheapest$681Average$862FlexibilityNo cancel feeOn-time80%
Korean AirCheapest$698Average$1,064FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$708Average$932FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$710Average$1,053FlexibilityNo cancel feeOn-time77%
DeltaCheapest$718Average$1,196FlexibilityNo cancel feeOn-timeN/A
Etihad AirwaysCheapest$764Average$1,119FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$779Average$1,134FlexibilityNo cancel feeOn-time71%
Japan AirlinesCheapest$825Average$976FlexibilityNo cancel feeOn-time79%

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