HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$601+ Cheap flights from Thailand to Illinois

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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ORD
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Thailand to Illinois 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 Thailand to Illinois

Keep the following information in mind while searching for Thailand to Illinois flight deals. Data was last updated July 3, 2025.

Round-trip from

$998
(Japan Airlines)

One-way from

$601
(Booking.com)

Popular in

January

Cheapest in

September

Average price

$1,076
From Thailand to Illinois
Search Deals
One-way flight from Thailand to Illinois
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Thailand to Illinois

Cheapest flights from Thailand to Illinois
Explore the most affordable flight options available from Thailand to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This Japan Airlines deal was found by Cheapflights users on 7/2. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/19:45 amBKK - STL
2 stops49h 24mJapan Airlines
Sun 9/219:56 amSTL - BKK
2 stops25h 04mJapan Airlines
Deal found 7/2$998
This Mytrip deal was found by Cheapflights users on 7/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/156:30 amCNX - ORD
3 stops47h 41mMultiple Airlines
Mon 9/295:45 pmORD - CNX
2 stops27h 00mMultiple Airlines
Deal found 7/1$1,007
This iWofly deal was found by Cheapflights users on 7/1. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/99:45 amBKK - ORD
2 stops47h 39mJapan Airlines
Sun 7/271:30 amORD - BKK
1 stop25h 40mJapan Airlines
Deal found 7/1$1,011
This Mytrip deal was found by Cheapflights users on 7/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/271:30 pmBKK - ORD
2 stops28h 10mMultiple Airlines
Wed 9/1011:25 amORD - BKK
2 stops47h 15mMultiple Airlines
Deal found 7/2$1,012
This oojo deal was found by Cheapflights users on 7/1. 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 9/1112:25 pmBKK - ORD
1 stop20h 20mEVA Air
Thu 10/3012:30 amORD - BKK
1 stop23h 00mEVA Air
Deal found 7/1$1,024
This United Airlines deal was found by Cheapflights users on 7/1. 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 7/39:35 amBKK - ORD
1 stop41h 45mUnited Airlines
Sun 7/136:00 amORD - BKK
2 stops34h 35mUnited Airlines
Deal found 7/1$1,029
This Delta deal was found by Cheapflights users on 7/1. 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 7/32:35 amBKK - MDW
2 stops31h 10mDelta
Sun 7/139:25 amMDW - BKK
2 stops24h 20mDelta
Deal found 7/1$1,029
This Delta deal was found by Cheapflights users on 7/2. 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 7/711:15 pmCNX - ORD
2 stops36h 41mDelta
Sun 7/208:30 amORD - CNX
2 stops25h 25mDelta
Deal found 7/2$1,031
This Delta deal was found by Cheapflights users on 7/3. 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 7/79:50 amBKK - ORD
2 stops26h 06mDelta
Tue 7/157:11 amORD - BKK
2 stops29h 54mDelta
Deal found 7/3$1,032
This FlightHub deal was found by Cheapflights users on 7/3. 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.
Mon 7/79:35 amBKK - ORD
1 stop41h 45mANA
Tue 7/155:45 pmORD - BKK
1 stop22h 50mANA
Deal found 7/3$1,037
This oojo deal was found by Cheapflights users on 7/1. 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 10/111:35 amCNX - ORD
1 stop21h 10mEVA Air
Tue 10/2812:30 amORD - CNX
1 stop22h 05mEVA Air
Deal found 7/1$1,055
This Mytrip deal was found by Cheapflights users on 7/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/286:45 pmDMK - ORD
3 stops46h 55mMultiple Airlines
Thu 9/111:55 pmORD - DMK
2 stops26h 30mMultiple Airlines
Deal found 7/2$1,112

Cheapflights Fare Finder

Customize your flight search to find flights from Thailand to Illinois 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 3, 2025.
Use the filters below to find and compare flights from Thailand to Illinois that are best for you.

Fly from

Thailand

Fly to

Illinois

Route

Depart

Return

Price

BangkokSt. Louis

BKK - STL

BKKSTL

Bangkok Suvarnabhumi

Mon 9/1

9:45 am-11:09 pm

2 stops49h 24m

Lambert-St Louis

Sun 9/21

9:56 am-11:00 pm

2 stops25h 04m

$998

Chiang MaiChicago

CNX - ORD

CNXORD

Chiang Mai

Mon 9/15

6:30 am-6:11 pm

3 stops47h 41m

Chicago O'Hare Intl

Mon 9/29

5:45 pm-8:45 am

2 stops27h 00m

$1,007

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Wed 8/27

1:30 pm-5:40 am

2 stops28h 10m

Chicago O'Hare Intl

Wed 9/10

11:25 am-10:40 pm

2 stops47h 15m

$1,012

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Thu 9/11

12:25 pm-8:45 pm

1 stop20h 20m

Chicago O'Hare Intl

Thu 10/30

12:30 am-11:30 am

1 stop23h 00m

$1,024

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Thu 9/11

9:40 pm-9:30 am

1 stop23h 50m

Chicago O'Hare Intl

Sat 9/27

12:10 pm-11:25 pm

1 stop23h 15m

$1,029

BangkokChicago

BKK - MDW

BKKMDW

Bangkok Suvarnabhumi

Sun 9/14

11:30 pm-9:36 pm

2 stops34h 06m

Chicago Midway

Thu 9/25

9:35 am-11:25 pm

2 stops25h 50m

$1,029

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Tue 9/16

7:00 am-2:55 pm

1 stop19h 55m

Chicago O'Hare Intl

Sun 10/12

5:45 pm-4:35 am

1 stop22h 50m

$1,030

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Mon 9/1

10:05 pm-9:03 pm

2 stops34h 58m

Chicago O'Hare Intl

Mon 9/29

1:05 am-3:10 pm

1 stop26h 05m

$1,052

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Sun 9/14

7:00 am-2:55 pm

1 stop19h 55m

Chicago O'Hare Intl

Thu 9/25

6:15 am-4:35 am

2 stops34h 20m

$1,054

Chiang MaiChicago

CNX - ORD

CNXORD

Chiang Mai

Wed 10/1

11:35 am-8:45 pm

1 stop21h 10m

Chicago O'Hare Intl

Tue 10/28

12:30 am-10:35 am

1 stop22h 05m

$1,055

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 59 results
1
2
3
...
6

Best time to book a flight from Thailand to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Thailand 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 Thailand to Illinois

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

Currently, August is the cheapest month in which you can book a flight from Thailand to Illinois (average of $245). Flying from Thailand to Illinois in March is currently the most expensive (average of $321). 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.

What is the cheapest time of day to fly from TH to IL?

Find hourly flight availability from Thailand to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Thailand to Illinois as you normally would.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated July 3, 2025.
Read through reviews of airlines operating flights from Thailand to Illinois, such as EVA Air, Korean Air, and ANA. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,215 reviews

Overall

8.4

Food

8.1

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,215 reviews
EVA Air
8.4
Very good
1,215 reviews

Overall

8.4

Food

8.1

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very good
1,101 reviews
EVA Air
8.4
Very good
1,215 reviews

Overall

8.4

Food

8.1

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
ANA
8.4
Very good
893 reviews
EVA Air
8.4
Very good
1,215 reviews

Overall

8.4

Food

8.1

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Japan Airlines
8.3
Very good
1,505 reviews
EVA Air
8.4
Very good
1,215 reviews

Overall

8.4

Food

8.1

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
China Airlines
8.3
Very good
744 reviews
EVA Air
8.4
Very good
1,215 reviews

Overall

8.4

Food

8.1

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Related info for your journey

Find useful and relevant information for your journey from Thailand to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    The cheapest airlines for a one-way flight from Thailand to Illinois are IndiGo ($601), China Airlines ($605), and Thai Airways ($615).

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Thailand to Illinois (average of $245). Flying from Thailand to Illinois in March is currently the most expensive (average of $321). 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 Thailand to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Incheon Intl to John F Kennedy Intl flights
Haneda to John F Kennedy Intl flights
Incheon Intl to Newark flights
Okinawa to Dallas/Fort Worth flights
Hyderabad to Dallas/Fort Worth flights
Haneda to Newark flights
Incheon Intl to LaGuardia flights
New Delhi to Newark flights
Narita to Newark flights
Haneda to Los Angeles flights
Taiwan Taoyuan Intl to Seattle flights
Mumbai to John F Kennedy Intl flights
Incheon Intl to Seattle flights
Mumbai to San Francisco flights
Manila to Los Angeles flights
Incheon Intl to Los Angeles flights
Narita to John F Kennedy Intl flights
Narita to Los Angeles flights
Incheon Intl to Honolulu flights
Narita to Honolulu flights
Incheon Intl to San Francisco flights
Incheon Intl to Dallas/Fort Worth flights
Haneda to Honolulu flights
Hong Kong to John F Kennedy Intl flights
New Delhi to San Francisco flights
New Delhi to Los Angeles flights
Narita to Seattle flights
Manila to San Francisco flights
Incheon Intl to O'Hare Intl flights
Mumbai to Seattle flights
Taiwan Taoyuan Intl to Los Angeles flights
Haneda to Seattle flights
Taiwan Taoyuan Intl to San Francisco flights
Narita to O'Hare Intl flights
Haneda to O'Hare Intl flights
New Delhi to John F Kennedy Intl flights
Mumbai to Newark flights
Haneda to LaGuardia flights
Bangalore to San Francisco flights
Hongqiao Intl to John F Kennedy Intl flights
Incheon Intl to Dulles Intl flights
Narita to LaGuardia flights
Kuala Lumpur Intl to San Francisco flights
New Delhi to LaGuardia flights
Manila to John F Kennedy Intl flights
Singapore to Los Angeles flights
Hong Kong to Los Angeles flights
Gimpo Intl to John F Kennedy Intl flights
Hongqiao Intl to Newark flights
Suvarnabhumi to John F Kennedy Intl flights

Top 7 airlines flying from Thailand to Illinois

Discover the top 7 airlines that operate flights from Thailand to Illinois. 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 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Japan AirlinesCheapest$681Average$1,005FlexibilityNo cancel feeOn-time79%
Cathay PacificCheapest$905Average$1,046FlexibilityNo cancel feeOn-time72%
Korean AirCheapest$915Average$1,106FlexibilityNo cancel feeOn-time81%
ANACheapest$949Average$1,060FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$951Average$1,055FlexibilityNo cancel feeOn-time69%
EVA AirCheapest$986Average$1,114FlexibilityNo cancel feeOn-time74%
Thai AirwaysCheapest$994Average$1,155FlexibilityNo cancel feeOn-time77%

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.