HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Thailand

$519+ 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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BKK
Jun 11 — Jun 181
Thu 6/11
Thu 6/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Thailand with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 May 12, 2026.

This Delta deal was found by Cheapflights users on 5/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1111:15 am
ORD
-
CNX
1 stop22h 40m
Delta
Tue 11/1712:15 am
CNX
-
ORD
1 stop21h 15m
Delta
Deal found 5/7$910
This Trip.com deal was found by Cheapflights users on 5/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/262:10 pm
ORD
-
CNX
1 stop27h 55m
Etihad Airways
Tue 2/168:50 am
CNX
-
ORD
1 stop36h 05m
Etihad Airways
Deal found 5/11$918
This KAYAK deal was found by Cheapflights users on 5/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/64:00 pm
ORD
-
HKT
1 stop30h 50m
Cathay Pacific
Mon 9/1411:50 am
HKT
-
ORD
1 stop38h 30m
Cathay Pacific
Deal found 5/8$934
This Delta deal was found by Cheapflights users on 5/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1311:15 am
ORD
-
CNX
1 stop22h 40m
Delta
Tue 11/1712:15 am
CNX
-
ORD
1 stop21h 15m
Delta
Deal found 5/7$960
This Korean Air deal was found by Cheapflights users on 5/7. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1111:15 am
ORD
-
CNX
1 stop22h 40m
Korean Air
Tue 11/1712:15 am
CNX
-
ORD
1 stop21h 15m
Korean Air
Deal found 5/7$964
This ScholarTrip deal was found by Cheapflights users on 5/11. 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.
Tue 9/14:00 pm
ORD
-
HKT
1 stop30h 50m
Cathay Pacific
Wed 9/236:20 pm
HKT
-
ORD
1 stop31h 35m
Cathay Pacific
Deal found 5/11$965
This KAYAK deal was found by Cheapflights users on 5/11. 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 5/124:15 pm
ORD
-
HKT
1 stop30h 35m
Cathay Pacific
Fri 5/226:20 pm
HKT
-
ORD
1 stop31h 35m
Cathay Pacific
Deal found 5/11$972
This Delta deal was found by Cheapflights users on 5/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:00 am
ORD
-
HKT
2 stops27h 10m
Delta
Wed 9/2311:25 pm
HKT
-
ORD
2 stops34h 33m
Delta
Deal found 5/7$975
This Delta deal was found by Cheapflights users on 5/6. 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.
Wed 9/29:30 am
MDW
-
HKT
2 stops24h 40m
Delta
Wed 9/911:25 pm
HKT
-
MDW
2 stops34h 21m
Delta
Deal found 5/6$975
This Delta deal was found by Cheapflights users on 5/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:00 am
MDW
-
CNX
2 stops27h 55m
Delta
Tue 11/1712:15 am
CNX
-
MDW
2 stops34h 30m
Delta
Deal found 5/7$975
This oojo deal was found by Cheapflights users on 5/11. 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 11/118:20 pm
ORD
-
CNX
1 stop20h 45m
Etihad Airways
Wed 11/188:50 am
CNX
-
ORD
1 stop36h 05m
Etihad Airways
Deal found 5/11$991
This Delta deal was found by Cheapflights users on 5/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:00 am
MDW
-
BKK
2 stops27h 30m
Delta
Thu 11/512:55 am
BKK
-
MDW
2 stops30h 42m
Delta
Deal found 5/7$994

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 May 12, 2026.

Round-trip from

$918
(Trip.com)

One-way from

$519
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$1,093
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 ($46 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 May 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 May 12, 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

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Mon 10/26

12:15 pm-10:55 pm

1 stop22h 40m

Chiang Mai

Mon 2/15

12:15 am-11:46 pm

2 stops36h 31m

$1,021

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

Mon 11/2

7:00 am-10:10 pm

2 stops26h 10m

Phuket City

Sun 11/15

11:40 pm-5:14 pm

2 stops30h 34m

$1,025

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Tue 11/3

7:00 am-10:55 pm

2 stops26h 55m

Chiang Mai

Mon 2/15

12:15 am-11:46 pm

2 stops36h 31m

$1,026

BloomingtonBangkok

BMI - BKK

BMIBKK

Bloomington-Normal

Thu 9/10

3:01 pm-6:10 pm

2 stops39h 09m

Bangkok Suvarnabhumi

Fri 9/18

3:05 pm-2:07 pm

2 stops35h 02m

$1,031

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Thu 8/20

9:21 am-6:45 am

2 stops33h 24m

Bangkok Suvarnabhumi

Wed 11/18

8:50 pm-7:27 pm

2 stops35h 37m

$1,039

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sat 8/8

7:34 am-11:50 pm

2 stops28h 16m

Bangkok Suvarnabhumi

Wed 8/19

8:45 pm-5:34 pm

2 stops32h 49m

$1,039

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Sun 8/2

7:00 am-9:35 am

2 stops38h 35m

Bangkok Suvarnabhumi

Sat 8/29

9:35 am-6:20 am

2 stops32h 45m

$1,060

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

Tue 9/1

5:55 pm-10:10 pm

2 stops40h 15m

Phuket City

Wed 9/23

11:25 pm-11:47 pm

2 stops36h 22m

$1,076

ChicagoPhuket City

MDW - HKT

MDWHKT

Chicago Midway

Mon 9/7

5:25 pm-10:10 pm

2 stops40h 45m

Phuket City

Tue 9/15

11:25 pm-9:46 pm

2 stops34h 21m

$1,076

St. LouisBangkok

STL - BKK

STLBKK

Lambert-St Louis

Sun 10/11

9:47 am-6:15 am

2 stops32h 28m

Bangkok Suvarnabhumi

Sat 10/24

9:00 pm-8:08 pm

2 stops35h 08m

$1,098

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/11

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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

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.

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

Currently, February is the cheapest month in which you can book a flight from Illinois to Thailand (average of $872). Flying from Illinois to Thailand in August is currently the most expensive (average of $1,544). 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.

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 26h 10m. Your travel time can differ by up to 12h 59m. Illinois and Thailand are separated by a distance of 8947 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, February is the cheapest month in which you can book a flight from Illinois to Thailand (average of $872). Flying from Illinois to Thailand in August is currently the most expensive (average of $1,544). 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.

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 Haneda flights
Newark to Narita flights
Seattle to Narita flights
San Francisco to Haneda flights
Seattle to Haneda flights
San Francisco to Narita flights
John F Kennedy Intl to Narita flights
Los Angeles to Manila flights
San Francisco to Manila flights
Dallas/Fort Worth to Narita flights
O'Hare Intl to Haneda flights
O'Hare Intl to Narita flights
Los Angeles to Suvarnabhumi flights
John F Kennedy Intl to Suvarnabhumi flights
LaGuardia to Haneda flights
Dulles Intl to Haneda flights
Dallas/Fort Worth to Haneda flights
John F Kennedy Intl to Incheon Intl flights
John F Kennedy Intl to New Delhi flights
Boston to Narita flights
Los Angeles to Incheon Intl flights
Newark to New Delhi flights
John F Kennedy Intl to Hong Kong flights
San Francisco to Taiwan Taoyuan Intl flights
John F Kennedy Intl to Mumbai flights
Hobby to Narita flights
George Bush Intcntl to Haneda flights
Newark to Suvarnabhumi flights
Dallas/Fort Worth to Hyderabad flights
Los Angeles to Ho Chi Minh City flights
Honolulu to Haneda flights
Atlanta to Haneda flights
Newark to Mumbai flights
Seattle to Pu Dong flights
Seattle to Suvarnabhumi flights
San Francisco to Suvarnabhumi flights
George Bush Intcntl to Narita flights
Dallas/Fort Worth to Suvarnabhumi flights
San Francisco to Hongqiao Intl flights
Denver to Narita flights
Dulles Intl to Narita flights
San Francisco to New Delhi 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 May 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$606Average$876FlexibilityNo cancel feeOn-timeN/A
Cathay PacificCheapest$665Average$1,137FlexibilityNo cancel feeOn-time72%
ANACheapest$680Average$1,074FlexibilityNo cancel feeOn-time80%
Korean AirCheapest$697Average$912FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$703Average$1,150FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$710Average$1,013FlexibilityNo cancel feeOn-time77%
DeltaCheapest$749Average$1,315FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$790Average$1,134FlexibilityNo cancel feeOn-time71%
EVA AirCheapest$806Average$1,171FlexibilityNo cancel feeOn-time74%
Japan AirlinesCheapest$815Average$960FlexibilityNo cancel feeOn-time79%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.