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$345+ 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BKK
Aug 20 — Aug 271
Thu 8/20
Thu 8/27
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 July 21, 2026.

This BusinessClass deal was found by Cheapflights users on 7/17. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/44:15 pm
ORD
-
HKT
1 stop30h 35m
Cathay Pacific
Wed 10/146:20 pm
HKT
-
ORD
1 stop31h 35m
Cathay Pacific
Deal found 7/17$808
This oojo deal was found by Cheapflights users on 7/17. 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 8/274:00 pm
ORD
-
HKT
1 stop30h 50m
Cathay Pacific
Sun 9/2711:50 am
HKT
-
ORD
1 stop38h 05m
Cathay Pacific
Deal found 7/17$813
This oojo deal was found by Cheapflights users on 7/17. 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.
Sun 9/134:00 pm
ORD
-
HKT
1 stop30h 50m
Cathay Pacific
Sun 9/206:20 pm
HKT
-
ORD
1 stop31h 35m
Cathay Pacific
Deal found 7/17$814
This oojo deal was found by Cheapflights users on 7/18. 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 8/244:00 pm
ORD
-
HKT
1 stop30h 50m
Cathay Pacific
Mon 9/216:20 pm
HKT
-
ORD
1 stop31h 35m
Cathay Pacific
Deal found 7/18$815
This Gotogate deal was found by Cheapflights users on 7/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/204:00 pm
ORD
-
HKT
1 stop30h 50m
Cathay Pacific
Sat 9/511:50 am
HKT
-
ORD
1 stop38h 30m
Cathay Pacific
Deal found 7/18$822
This ScholarTrip deal was found by Cheapflights users on 7/19. 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 ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/22:35 pm
ORD
-
HKT
1 stop38h 00m
Cathay Pacific
Sun 11/1512:20 pm
HKT
-
ORD
1 stop37h 35m
Cathay Pacific
Deal found 7/19$846
This oojo deal was found by Cheapflights users on 7/16. 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 10/84:15 pm
ORD
-
HKT
1 stop30h 35m
Cathay Pacific
Thu 10/1511:50 am
HKT
-
ORD
1 stop38h 05m
Cathay Pacific
Deal found 7/16$862
This oojo deal was found by Cheapflights users on 7/16. 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 8/194:00 pm
ORD
-
CNX
1 stop38h 40m
Cathay Pacific
Thu 12/107:40 pm
CNX
-
ORD
1 stop30h 15m
Cathay Pacific
Deal found 7/16$862
This oojo deal was found by Cheapflights users on 7/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/294:00 pm
ORD
-
HKT
1 stop30h 50m
Cathay Pacific
Sun 9/2711:50 am
HKT
-
ORD
1 stop38h 05m
Cathay Pacific
Deal found 7/19$863
This oojo deal was found by Cheapflights users on 7/17. 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.
Sun 10/184:15 pm
ORD
-
CNX
1 stop38h 25m
Cathay Pacific
Thu 10/297:40 pm
CNX
-
ORD
1 stop30h 15m
Cathay Pacific
Deal found 7/17$863
This Justfly.com deal was found by Cheapflights users on 7/19. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/104:00 pm
ORD
-
CNX
1 stop38h 40m
Cathay Pacific
Thu 9/1010:30 am
CNX
-
ORD
1 stop39h 50m
Cathay Pacific
Deal found 7/19$873
This ScholarTrip deal was found by Cheapflights users on 7/17. 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 ScholarTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/134:00 pm
ORD
-
HKT
1 stop30h 50m
Cathay Pacific
Wed 9/166:20 pm
HKT
-
ORD
1 stop31h 35m
Cathay Pacific
Deal found 7/17$876

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 July 21, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$808
(BusinessClass)

One-way from

$345
(Mytrip)

Popular in

December

Cheapest in

September

Average price

$1,187
Provider with most accurate pricing for Chicago (CHI)-Bangkok flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Bangkok flights.
Search Deals
From Illinois to Thailand
Search Deals
One-way flight from Illinois to Thailand
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 21, 2026.
Use the filters below to find and compare flights from Illinois to Thailand that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Fri 8/14

11:50 am-11:55 pm

1 stop24h 05m

Bangkok Suvarnabhumi

Wed 8/26

9:35 am-8:40 am

1 stop35h 05m

$935

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Fri 8/14

11:50 am-11:55 pm

1 stop24h 05m

Bangkok Suvarnabhumi

Mon 8/24

9:35 am-4:45 am

2 stops31h 10m

$945

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Sat 10/17

3:50 pm-9:35 am

2 stops29h 45m

Bangkok Suvarnabhumi

Tue 10/27

9:10 am-9:34 pm

2 stops24h 24m

$946

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Sun 10/4

9:45 pm-4:35 am

2 stops42h 50m

Bangkok Suvarnabhumi

Thu 11/12

9:10 am-10:56 pm

2 stops26h 46m

$947

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Fri 8/14

4:45 pm-9:35 am

2 stops28h 50m

Bangkok Suvarnabhumi

Tue 8/25

9:35 am-5:41 am

2 stops32h 06m

$947

ChicagoBangkok

MDW - BKK

MDWBKK

Chicago Midway

Sun 9/6

9:24 am-11:35 pm

2 stops26h 11m

Bangkok Suvarnabhumi

Tue 9/15

9:50 am-10:45 pm

2 stops24h 55m

$955

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Sat 8/8

8:28 am-11:35 pm

2 stops27h 07m

Bangkok Suvarnabhumi

Thu 10/1

9:50 am-9:55 pm

2 stops24h 05m

$956

ChicagoBangkok

MDW - BKK

MDWBKK

Chicago Midway

Sun 10/18

9:59 am-1:05 am

2 stops27h 06m

Bangkok Suvarnabhumi

Wed 10/28

9:40 am-10:25 pm

2 stops24h 45m

$956

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Thu 10/15

6:00 am-11:55 pm

2 stops29h 55m

Bangkok Suvarnabhumi

Sat 10/31

4:55 pm-10:06 am

3 stops29h 11m

$964

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Tue 10/6

6:45 am-11:35 pm

2 stops28h 50m

Bangkok Suvarnabhumi

Sun 2/7

12:55 am-1:20 pm

2 stops25h 25m

$970

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/20

Showing 1-10 of 60 resultsSorted by cheapest first
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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 $847). Flying from Illinois to Thailand in December is currently the most expensive (average of $1,279). 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.

How far ahead should I book a flight from Illinois to Thailand?

The price you pay for your flight from Illinois to Thailand may vary depending on when you book. For the best chance of a lower fare, look to book 84 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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?

    United Airlines, Delta, and EVA Air can get you from Illinois to Thailand in just under 21h 55m. Your travel time can differ by up to 4h 16m. Illinois and Thailand are separated by a distance of 8211 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, September is the cheapest month in which you can book a flight from Illinois to Thailand (average of $847). Flying from Illinois to Thailand in December is currently the most expensive (average of $1,279). 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.
Los Angeles to Haneda flights
Los Angeles to Narita flights
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John F Kennedy Intl to Haneda flights
Newark to Narita flights
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John F Kennedy Intl to Suvarnabhumi flights
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Dallas/Fort Worth to Haneda flights
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Honolulu to Haneda flights
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John F Kennedy Intl to Hong Kong flights
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George Bush Intcntl to Haneda flights
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Los Angeles to Taiwan Taoyuan Intl flights
O'Hare Intl to Suvarnabhumi flights
San Francisco to Hong Kong flights
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Boston to Narita flights
Atlanta to Haneda flights
Seattle to Taiwan Taoyuan Intl 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 July 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$601Average$871FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$665Average$918FlexibilityNo cancel feeOn-time72%
ANACheapest$679Average$1,087FlexibilityNo cancel feeOn-time80%
Korean AirCheapest$696Average$918FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$708Average$1,159FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$710Average$1,008FlexibilityNo cancel feeOn-time77%
DeltaCheapest$749Average$1,361FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$790Average$1,134FlexibilityNo cancel feeOn-time71%
EVA AirCheapest$804Average$1,115FlexibilityNo cancel feeOn-time74%
Japan AirlinesCheapest$815Average$970FlexibilityNo cancel feeOn-time79%

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