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$485+ Cheap flights from Illinois to Bangkok

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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BKK
Aug 25 — Sep 11
Tue 8/25
Tue 9/1
1 adult, Economy
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Cheap flight deals from Illinois to Bangkok

Cheapest flights from Illinois to Bangkok
Explore the most affordable flight options available from Illinois to Bangkok. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 26, 2026.

This KAYAK deal was found by Cheapflights users on 7/25. 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.
Tue 11/177:00 am
ORD
-
BKK
2 stops28h 20m
ANA
Mon 12/147:10 am
BKK
-
ORD
1 stop19h 40m
ANA
Deal found 7/25$926
This Delta deal was found by Cheapflights users on 7/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/25:21 pm
MDW
-
BKK
2 stops39h 09m
Delta
Wed 11/2511:15 pm
BKK
-
MDW
2 stops32h 22m
Delta
Deal found 7/24$926
This ANA deal was found by Cheapflights users on 7/25. 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 ANA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/75:45 pm
ORD
-
BKK
1 stop24h 10m
ANA
Tue 9/227:00 am
BKK
-
ORD
2 stops25h 33m
ANA
Deal found 7/25$927
This Air Canada deal was found by Cheapflights users on 7/25. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1310:00 pm
ORD
-
BKK
2 stops43h 05m
Air Canada
Wed 10/217:05 am
BKK
-
ORD
2 stops38h 38m
Air Canada
Deal found 7/25$928
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:45 pm
ORD
-
BKK
1 stop22h 50m
ANA
Mon 8/319:35 pm
BKK
-
ORD
1 stop29h 50m
ANA
Deal found 7/25$929
This FlightHub deal was found by Cheapflights users on 7/21. 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.
Sun 10/187:54 pm
ORD
-
BKK
2 stops45h 11m
Air Canada
Wed 10/287:25 am
BKK
-
ORD
1 stop19h 12m
Air Canada
Deal found 7/21$930
This United Airlines deal was found by Cheapflights users on 7/25. 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.
Fri 9/117:50 pm
ORD
-
BKK
2 stops25h 45m
United Airlines
Sun 10/49:35 am
BKK
-
ORD
1 stop35h 05m
United Airlines
Deal found 7/25$931
This United Airlines deal was found by Cheapflights users on 7/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:15 pm
ORD
-
BKK
1 stop28h 20m
United Airlines
Wed 9/29:35 am
BKK
-
ORD
1 stop35h 05m
United Airlines
Deal found 7/21$932
This United Airlines deal was found by Cheapflights users on 7/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:50 pm
ORD
-
BKK
2 stops25h 45m
United Airlines
Fri 9/117:00 am
BKK
-
ORD
1 stop19h 55m
United Airlines
Deal found 7/22$933
This Air Canada deal was found by Cheapflights users on 7/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/610:00 pm
ORD
-
BKK
2 stops43h 05m
Air Canada
Wed 9/167:05 am
BKK
-
ORD
1 stop19h 38m
Air Canada
Deal found 7/22$935
This United Airlines deal was found by Cheapflights users on 7/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/64:45 pm
ORD
-
BKK
2 stops28h 50m
United Airlines
Mon 9/219:35 am
BKK
-
ORD
1 stop35h 05m
United Airlines
Deal found 7/22$936
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Sun 10/251:00 pm
ORD
-
BKK
2 stops34h 30m
United Airlines
Tue 11/37:10 am
BKK
-
ORD
1 stop19h 40m
United Airlines
Deal found 7/24$937

Find flight deals from Illinois to Bangkok

Keep the following information in mind while searching for Illinois to Bangkok flight deals. Data was last updated July 26, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$926
(KAYAK)

One-way from

$485
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$1,207
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 Bangkok
Search Deals
One-way flight from Illinois to Bangkok
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($30 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 Bangkok 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 26, 2026.
Use the filters below to find and compare flights from Illinois to Bangkok that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBangkok

MDW - BKK

MDWBKK

Chicago Midway

Mon 11/9

5:25 pm-9:30 pm

2 stops39h 05m

Bangkok Suvarnabhumi

Tue 11/17

9:40 am-10:56 pm

2 stops26h 16m

$926

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Thu 8/27

5:52 pm-9:35 am

2 stops27h 43m

Bangkok Suvarnabhumi

Fri 9/11

9:35 am-11:17 pm

2 stops25h 42m

$937

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Sat 10/31

7:00 am-12:45 am

2 stops29h 45m

Bangkok Suvarnabhumi

Tue 3/23

9:40 am-11:50 pm

2 stops26h 10m

$955

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Sun 11/22

9:40 pm-5:10 am

2 stops42h 30m

Bangkok Suvarnabhumi

Sun 12/13

4:55 pm-6:29 pm

2 stops38h 34m

$965

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Thu 11/19

6:45 am-11:20 pm

2 stops27h 35m

Bangkok Suvarnabhumi

Tue 2/2

11:15 pm-1:20 pm

2 stops27h 05m

$970

ChicagoBangkok

MDW - BKK

MDWBKK

Chicago Midway

Mon 11/23

10:35 am-1:25 pm

2 stops37h 50m

Bangkok Suvarnabhumi

Mon 12/7

9:30 pm-12:33 pm

2 stops28h 03m

$971

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Thu 9/17

5:30 am-1:05 am

2 stops31h 35m

Bangkok Suvarnabhumi

Sun 10/18

9:40 pm-9:30 am

1 stop23h 50m

$1,010

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Thu 11/5

10:35 am-5:15 pm

2 stops41h 40m

Bangkok Suvarnabhumi

Sun 12/6

9:00 am-3:05 pm

2 stops43h 05m

$1,012

ChicagoBangkok

MDW - BKK

MDWBKK

Chicago Midway

Tue 1/19

6:00 am-12:45 am

2 stops29h 45m

Bangkok Suvarnabhumi

Mon 4/19

11:30 pm-4:25 pm

2 stops28h 55m

$1,021

BloomingtonBangkok

BMI - BKK

BMIBKK

Bloomington-Normal

Tue 9/8

1:45 pm-6:10 pm

2 stops40h 25m

Bangkok Suvarnabhumi

Tue 9/15

3:55 pm-12:03 am

2 stops44h 08m

$1,036

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/25

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Illinois to Bangkok

Have a flexible travel schedule? Discover the best time to fly to Bangkok 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 Bangkok

What is the cheapest month to book a flight from Illinois to Bangkok?

Currently, September is the cheapest month in which you can book a flight from Illinois to Bangkok (average of $849). Flying from Illinois to Bangkok in December is currently the most expensive (average of $1,304). 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 much does it cost to fly round-trip from Illinois to Bangkok?

Airfare is typical for this route at the moment.
Illinois to Bangkok flights typically cost between $884 and $1,144 in November.
The cheapest round-trip price found within the last 5 days was $926 on ANA (Nov 17-Dec 14).

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

The price you pay for your flight from Illinois to Bangkok may vary depending on when you book. For the best chance of a lower fare, look to book 10 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 Bangkok. 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 Bangkok?

    There are many flights that can get you from Illinois to Bangkok in 27h 43m. Fly via Delta, United Airlines, or Etihad Airways to get the fastest option. The distance from Illinois to Bangkok is about 8545 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to Bangkok one-way?

    To fly one-way, consider booking your trip with Air India, which is currently one of the cheapest options available, starting at $308. Turkish Airlines flights start at $342 while deals on Cathay Pacific start at $361 one-way.

  • What are the most popular routes from Illinois to Bangkok?

    The most popular route from Illinois to Bangkok is Chicago O'Hare Intl - Bangkok Suvarnabhumi. You may also consider Chicago Midway - Bangkok Suvarnabhumi or Chicago O'Hare Intl - Bangkok Don Mueang Intl.

  • Can I find deals for flights from Illinois to Bangkok that include hotel bookings?

    Yes. In addition to deals on Illinois to Bangkok flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Bangkok?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Bangkok.

  • Can I find deals for business class flights from Illinois to Bangkok?

    Yes. Cheapflights offers flight deals from Illinois to Bangkok 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 Bangkok?

    Currently, September is the cheapest month in which you can book a flight from Illinois to Bangkok (average of $849). Flying from Illinois to Bangkok in December is currently the most expensive (average of $1,304). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 10 airlines flying from Illinois to Bangkok

Discover the top 10 airlines that operate flights from Illinois to Bangkok. 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 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$601Average$720FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$665Average$891FlexibilityNo cancel feeOn-time72%
ANACheapest$679Average$1,087FlexibilityNo cancel feeOn-time80%
Korean AirCheapest$696Average$869FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$708Average$1,159FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$710Average$839FlexibilityNo cancel feeOn-time77%
DeltaCheapest$749Average$1,168FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$790Average$1,134FlexibilityNo cancel feeOn-time71%
EVA AirCheapest$804Average$1,013FlexibilityNo cancel feeOn-time74%
Japan AirlinesCheapest$815Average$970FlexibilityNo cancel feeOn-time79%

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