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$563+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BKK
Jul 9 — Jul 161
Thu 7/9
Thu 7/16
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 June 9, 2026.

This oojo deal was found by Cheapflights users on 6/8. 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 8/206:54 am
STL
-
BKK
2 stops35h 51m
Etihad Airways
Wed 11/182:40 pm
BKK
-
STL
2 stops35h 37m
Etihad Airways
Deal found 6/8$1,014
This oojo deal was found by Cheapflights users on 6/9. 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 11/1110:06 am
PIA
-
BKK
2 stops31h 29m
Etihad Airways
Wed 12/28:50 pm
BKK
-
PIA
2 stops34h 18m
Etihad Airways
Deal found 6/9$1,014
This oojo deal was found by Cheapflights users on 6/7. 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 8/1910:22 am
STL
-
BKK
2 stops32h 23m
Etihad Airways
Fri 9/43:55 pm
BKK
-
STL
2 stops37h 39m
Etihad Airways
Deal found 6/7$1,016
This oojo deal was found by Cheapflights users on 6/4. 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 10/312:57 pm
SPI
-
BKK
2 stops32h 48m
Etihad Airways
Sun 11/228:50 pm
BKK
-
SPI
2 stops52h 57m
Etihad Airways
Deal found 6/4$1,020
This oojo deal was found by Cheapflights users on 6/5. 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 11/16:00 am
STL
-
BKK
2 stops35h 35m
Etihad Airways
Sat 11/218:50 pm
BKK
-
STL
2 stops29h 27m
Etihad Airways
Deal found 6/5$1,020
This oojo deal was found by Cheapflights users on 6/8. 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 9/28:34 am
STL
-
BKK
2 stops27h 16m
Etihad Airways
Fri 9/183:15 am
BKK
-
STL
2 stops41h 05m
Etihad Airways
Deal found 6/8$1,021
This oojo deal was found by Cheapflights users on 6/4. 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.
Fri 10/211:01 am
STL
-
BKK
2 stops31h 44m
Etihad Airways
Fri 10/93:15 am
BKK
-
STL
2 stops48h 15m
Etihad Airways
Deal found 6/4$1,024
This Etihad Airways deal was found by Cheapflights users on 6/8. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/117:35 am
STL
-
BKK
2 stops28h 15m
Multiple Airlines
Fri 10/233:15 am
BKK
-
STL
2 stops28h 53m
Multiple Airlines
Deal found 6/8$1,038
This Etihad Airways deal was found by Cheapflights users on 6/7. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1911:33 am
MLI
-
BKK
2 stops43h 42m
Multiple Airlines
Fri 10/302:40 pm
BKK
-
MLI
2 stops37h 14m
Multiple Airlines
Deal found 6/7$1,038
This BusinessClass deal was found by Cheapflights users on 6/7. 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.
Wed 10/79:38 am
STL
-
BKK
2 stops26h 12m
Etihad Airways
Tue 10/133:15 am
BKK
-
STL
2 stops28h 53m
Etihad Airways
Deal found 6/7$1,041
This Etihad Airways deal was found by Cheapflights users on 6/8. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:38 am
STL
-
BKK
2 stops35h 07m
Multiple Airlines
Mon 10/193:15 am
BKK
-
STL
2 stops32h 10m
Multiple Airlines
Deal found 6/8$1,044
This oojo deal was found by Cheapflights users on 6/8. 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.
Fri 10/97:35 am
STL
-
BKK
2 stops35h 00m
Etihad Airways
Thu 10/229:00 pm
BKK
-
STL
2 stops30h 30m
Etihad Airways
Deal found 6/8$1,076

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 June 9, 2026.

Round-trip from

$1,014
(oojo)

One-way from

$563
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$1,229
From Illinois to Bangkok
Search Deals
One-way flight from Illinois to Bangkok
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($52 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
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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 June 9, 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

PeoriaBangkok

PIA - BKK

PIABKK

Greater Peoria

Wed 11/11

10:06 am-6:35 am

2 stops31h 29m

Bangkok Suvarnabhumi

Wed 12/2

8:50 pm-6:08 pm

2 stops34h 18m

$1,014

SpringfieldBangkok

SPI - BKK

SPIBKK

Springfield Capital

Sat 10/31

2:57 pm-11:45 am

2 stops32h 48m

Bangkok Suvarnabhumi

Sun 11/22

8:50 pm-12:47 pm

2 stops52h 57m

$1,020

BloomingtonBangkok

BMI - BKK

BMIBKK

Bloomington-Normal

Thu 10/15

6:39 pm-11:50 pm

2 stops41h 11m

Bangkok Suvarnabhumi

Mon 10/26

8:50 pm-11:02 pm

2 stops38h 12m

$1,081

ChicagoBangkok

MDW - BKK

MDWBKK

Chicago Midway

Sun 10/4

6:05 am-1:05 am

2 stops31h 00m

Bangkok Suvarnabhumi

Thu 10/15

9:50 am-9:45 pm

2 stops23h 55m

$1,121

ChicagoBangkok

MDW - BKK

MDWBKK

Chicago Midway

Fri 11/20

10:35 am-12:45 am

2 stops49h 10m

Bangkok Suvarnabhumi

Wed 12/9

11:15 pm-12:33 pm

2 stops26h 18m

$1,127

ChicagoBangkok

MDW - BKK

MDWBKK

Chicago Midway

Wed 11/11

1:05 pm-1:25 pm

2 stops35h 20m

Bangkok Suvarnabhumi

Wed 11/25

9:30 pm-12:33 pm

2 stops28h 03m

$1,128

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Sat 11/21

9:30 pm-5:10 am

2 stops42h 40m

Bangkok Suvarnabhumi

Mon 11/30

7:10 am-1:50 pm

1 stop19h 40m

$1,143

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Tue 10/13

7:00 am-4:35 am

2 stops33h 35m

Bangkok Suvarnabhumi

Tue 10/20

3:45 pm-7:25 am

3 stops27h 40m

$1,152

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Thu 6/25

7:00 am-4:35 am

2 stops33h 35m

Bangkok Suvarnabhumi

Thu 7/2

9:35 am-11:22 pm

2 stops25h 47m

$1,152

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Sat 12/5

11:45 am-5:20 am

1 stop28h 35m

Bangkok Suvarnabhumi

Tue 12/15

6:10 am-10:00 am

1 stop40h 50m

$1,164

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

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, August is the cheapest month in which you can book a flight from Illinois to Bangkok (average of $599). Flying from Illinois to Bangkok in September is currently the most expensive (average of $1,419). 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?

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 31h. Fly via Etihad Airways, Delta, or United Airlines to get the fastest option. The distance from Illinois to Bangkok is about 8559 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 $360 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, August is the cheapest month in which you can book a flight from Illinois to Bangkok (average of $599). Flying from Illinois to Bangkok in September is currently the most expensive (average of $1,419). 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 June 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$611Average$733FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$665Average$877FlexibilityNo cancel feeOn-time72%
ANACheapest$679Average$1,068FlexibilityNo cancel feeOn-time80%
Korean AirCheapest$698Average$856FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$701Average$1,150FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$710Average$843FlexibilityNo cancel feeOn-time77%
DeltaCheapest$749Average$1,135FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$790Average$1,134FlexibilityNo cancel feeOn-time71%
EVA AirCheapest$804Average$1,011FlexibilityNo cancel feeOn-time74%
Japan AirlinesCheapest$815Average$968FlexibilityNo cancel feeOn-time79%

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