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$485+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BKK
Jul 23 — Jul 301
Thu 7/23
Thu 7/30
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 June 23, 2026.

This oojo deal was found by Cheapflights users on 6/22. 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.
Tue 9/154:00 pm
ORD
-
HKT
1 stop30h 50m
Cathay Pacific
Tue 9/2911:50 am
HKT
-
ORD
1 stop38h 05m
Cathay Pacific
Deal found 6/22$913
This oojo deal was found by Cheapflights users on 6/19. 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.
Tue 9/14:00 pm
ORD
-
HKT
1 stop30h 50m
Cathay Pacific
Wed 9/306:20 pm
HKT
-
ORD
1 stop31h 35m
Cathay Pacific
Deal found 6/19$916
This oojo deal was found by Cheapflights users on 6/20. 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.
Tue 9/224:15 pm
ORD
-
HKT
1 stop30h 35m
Cathay Pacific
Wed 9/306:20 pm
HKT
-
ORD
1 stop31h 35m
Cathay Pacific
Deal found 6/20$917
This oojo deal was found by Cheapflights users on 6/18. 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.
Sun 10/184:15 pm
ORD
-
HKT
1 stop30h 35m
Cathay Pacific
Sun 10/256:35 pm
HKT
-
ORD
1 stop31h 20m
Cathay Pacific
Deal found 6/18$920
This oojo deal was found by Cheapflights users on 6/19. 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.
Sun 8/304:00 pm
ORD
-
HKT
1 stop30h 50m
Cathay Pacific
Sun 9/136:20 pm
HKT
-
ORD
1 stop32h 00m
Cathay Pacific
Deal found 6/19$932
This FlightHub deal was found by Cheapflights users on 6/21. 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.
Wed 10/74:15 pm
ORD
-
HKT
1 stop30h 35m
Cathay Pacific
Sat 10/1711:50 am
HKT
-
ORD
1 stop38h 05m
Cathay Pacific
Deal found 6/21$941
This BusinessClass deal was found by Cheapflights users on 6/19. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
ORD
-
HKT
2 stops28h 20m
SAUDIA
Wed 9/3011:45 pm
HKT
-
ORD
2 stops33h 52m
SAUDIA
Deal found 6/19$945
This Gotogate deal was found by Cheapflights users on 6/22. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:45 pm
ORD
-
HKT
2 stops27h 50m
Multiple Airlines
Mon 9/79:55 pm
HKT
-
ORD
2 stops29h 00m
Multiple Airlines
Deal found 6/22$946
This Gotogate deal was found by Cheapflights users on 6/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/315:45 pm
ORD
-
HKT
2 stops27h 50m
Multiple Airlines
Sun 9/69:55 pm
HKT
-
ORD
2 stops29h 00m
Multiple Airlines
Deal found 6/21$948
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/74:15 pm
ORD
-
HKT
1 stop30h 35m
Cathay Pacific
Sun 10/186:20 pm
HKT
-
ORD
1 stop31h 35m
Cathay Pacific
Deal found 6/21$952
This Booking.com deal was found by Cheapflights users on 6/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/44:25 pm
ORD
-
HKT
2 stops28h 10m
Multiple Airlines
Wed 11/1810:00 pm
HKT
-
ORD
2 stops28h 50m
Multiple Airlines
Deal found 6/22$954
This SAUDIA deal was found by Cheapflights users on 6/21. 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 SAUDIA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:00 am
ORD
-
HKT
2 stops28h 20m
SAUDIA
Wed 10/1411:45 pm
HKT
-
ORD
2 stops33h 48m
SAUDIA
Deal found 6/21$961

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 June 23, 2026.

Round-trip from

$913
(oojo)

One-way from

$485
(oojo)

Popular in

December

Cheapest in

September

Average price

$1,232
From Illinois to Thailand
Search Deals
One-way flight from Illinois to Thailand
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($42 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 June 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 June 23, 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

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

Tue 9/15

6:25 pm-10:10 pm

2 stops39h 45m

Phuket City

Tue 9/29

11:25 pm-4:14 pm

2 stops28h 49m

$1,022

PeoriaBangkok

PIA - BKK

PIABKK

Greater Peoria

Thu 10/1

5:28 pm-6:35 am

2 stops25h 07m

Bangkok Suvarnabhumi

Fri 10/30

8:30 am-3:43 pm

2 stops43h 13m

$1,026

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Wed 10/14

3:03 pm-6:45 am

2 stops27h 42m

Bangkok Suvarnabhumi

Sat 10/31

8:50 pm-6:54 pm

2 stops34h 04m

$1,038

PeoriaBangkok

PIA - BKK

PIABKK

Greater Peoria

Thu 10/1

5:28 pm-6:10 pm

2 stops36h 42m

Bangkok Suvarnabhumi

Fri 10/30

2:40 pm-5:49 pm

2 stops39h 09m

$1,038

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

Mon 8/24

8:48 am-10:10 pm

2 stops25h 22m

Phuket City

Tue 9/1

11:25 pm-8:55 pm

2 stops33h 30m

$1,045

ChicagoPhuket City

MDW - HKT

MDWHKT

Chicago Midway

Wed 9/2

9:24 am-10:10 pm

2 stops24h 46m

Phuket City

Mon 9/7

11:25 pm-10:45 pm

2 stops35h 20m

$1,045

ChicagoPhuket City

MDW - HKT

MDWHKT

Chicago Midway

Sun 8/30

6:42 pm-10:10 pm

2 stops39h 28m

Phuket City

Sun 9/13

11:25 pm-10:25 pm

2 stops35h 00m

$1,051

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Tue 7/7

5:45 pm-4:35 am

1 stop22h 50m

Bangkok Suvarnabhumi

Mon 7/13

9:35 am-11:22 pm

2 stops25h 47m

$1,083

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

Thu 8/13

5:30 am-10:10 pm

2 stops28h 40m

Phuket City

Thu 8/27

11:25 pm-11:57 pm

2 stops36h 32m

$1,086

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

Mon 8/31

12:30 pm-10:10 pm

1 stop21h 40m

Phuket City

Sun 9/6

11:25 pm-11:57 pm

2 stops36h 32m

$1,091

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/22

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, July is the cheapest month in which you can book a flight from Illinois to Thailand (average of $609). Flying from Illinois to Thailand in August is currently the most expensive (average of $1,447). 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?

    Delta, Etihad Airways, and United Airlines can get you from Illinois to Thailand in just under 22h 50m. Your travel time can differ by up to 16h 55m. 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, July is the cheapest month in which you can book a flight from Illinois to Thailand (average of $609). Flying from Illinois to Thailand in August is currently the most expensive (average of $1,447). 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
John F Kennedy Intl to Haneda flights
Newark to Narita flights
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John F Kennedy Intl to New Delhi flights
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Dulles Intl to Haneda flights
John F Kennedy Intl to Mumbai flights
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John F Kennedy Intl to Hong Kong flights
Newark to Suvarnabhumi flights
Hobby to Narita flights
Boston to Narita flights
George Bush Intcntl to Haneda flights
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Newark to Mumbai flights
San Francisco to Suvarnabhumi flights
San Francisco to Taiwan Taoyuan Intl flights
San Francisco to Ho Chi Minh City flights
Dallas/Fort Worth to Suvarnabhumi flights
Ontario to Narita flights
Seattle to Suvarnabhumi flights
San Francisco to New Delhi flights
San Francisco to Hong Kong flights
O'Hare Intl to Suvarnabhumi flights
John F Kennedy Intl to Manila flights
Seattle to Manila flights
LaGuardia to New Delhi flights
George Bush Intcntl to Narita flights
Dallas/Fort Worth to Hyderabad flights

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 June 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$602Average$873FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$665Average$911FlexibilityNo cancel feeOn-time72%
ANACheapest$679Average$1,064FlexibilityNo cancel feeOn-time80%
Korean AirCheapest$698Average$913FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$702Average$1,151FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$710Average$1,008FlexibilityNo cancel feeOn-time77%
DeltaCheapest$748Average$1,356FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$790Average$1,134FlexibilityNo cancel feeOn-time71%
EVA AirCheapest$804Average$1,109FlexibilityNo cancel feeOn-time74%
Japan AirlinesCheapest$815Average$970FlexibilityNo cancel feeOn-time79%

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