How long is the flight from Illinois to Thailand?

Korean Air, United Airlines, and Delta can get you from Illinois to Thailand in just under 23h 45m. Your travel time can differ by up to 5h 03m. 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 Turkish Airlines, with whom users have recently found tickets for as low as $392. However, be on the lookout for offers from Air India and Korean Air, as they are both options that can get you from Illinois to Thailand for a low price.

In terms of precipitation, rainfall in Thailand ranges from 0.4 - 12.6 inches per month. September is typically the wettest month, when rainfall can reach 12.6 in. January is typically the driest time to visit Thailand when rainfall is around 0.4 in.

If weather is an important factor for your trip to Thailand, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

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.

$368+ Cheap Flights from Illinois to Thailand

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Cheap flight deals from Illinois to Thailand

Round-trip from	$675 (Gotogate)
One-way from	$368 (oojo)
Popular in	December
Cheapest in	September
Average price	$858

From Illinois to Thailand

Search Deals

One-way flight from Illinois to Thailand

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($59 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find 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 September 16, 2025.

Thu 11/611:15 amORD - BKK

1 stop24h 30mKorean Air

Tue 11/1812:55 amBKK - ORD

1 stop20h 35mKorean Air

Deal found 9/14

$675

Wed 11/52:40 pmORD - BKK

1 stop31h 00mCathay Pacific

Tue 11/254:55 pmBKK - ORD

1 stop33h 05mCathay Pacific

Deal found 9/13

$678

Wed 9/174:00 pmORD - BKK

1 stop19h 50mCathay Pacific

Tue 9/303:00 pmBKK - ORD

1 stop35h 25mCathay Pacific

Deal found 9/14

$679

Tue 10/214:00 pmORD - BKK

1 stop30h 00mCathay Pacific

Tue 11/114:55 pmBKK - ORD

1 stop33h 05mCathay Pacific

Deal found 9/14

$680

Sat 9/2711:45 pmORD - BKK

1 stop27h 40mTurkish Airlines

Tue 10/711:00 amBKK - ORD

1 stop34h 40mTurkish Airlines

Deal found 9/15

$681

Tue 10/214:00 pmORD - BKK

1 stop19h 50mCathay Pacific

Sun 10/264:55 pmBKK - ORD

1 stop33h 05mCathay Pacific

Deal found 9/14

$682

Thu 11/62:35 pmORD - HKT

1 stop31h 45mCathay Pacific

Sun 11/1612:20 pmHKT - ORD

1 stop37h 35mCathay Pacific

Deal found 9/15

$682

Mon 9/2212:40 pmORD - BKK

1 stop27h 55mUnited Airlines

Sun 10/59:35 amBKK - ORD

1 stop41h 35mUnited Airlines

Deal found 9/16

$683

Wed 10/14:00 pmORD - BKK

1 stop31h 05mCathay Pacific

Mon 10/1312:30 pmBKK - ORD

1 stop37h 55mCathay Pacific

Deal found 9/14

$684

Wed 11/52:40 pmORD - CNX

1 stop39h 10mCathay Pacific

Sun 11/1610:35 amCNX - ORD

1 stop39h 25mCathay Pacific

Deal found 9/14

$684

Wed 11/122:35 pmORD - BKK

1 stop31h 40mCathay Pacific

Wed 12/104:55 pmBKK - ORD

1 stop33h 00mCathay Pacific

Deal found 9/15

$685

Wed 10/14:00 pmORD - BKK

1 stop19h 50mCathay Pacific

Sun 10/57:00 pmBKK - ORD

1 stop31h 25mCathay Pacific

Deal found 9/15

$688

Best flights from Illinois to Thailand
Discover carefully curated flight deals from Illinois to Thailand that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 16, 2025.

Wed 11/511:15 amORD - BKK

1 stop24h 30mKorean Air

Sun 11/912:55 amBKK - ORD

1 stop20h 35mKorean Air

Deal found 9/14

$699

Wed 3/44:25 pmORD - BKK

1 stop23h 45mUnited Airlines

Tue 3/109:10 amBKK - ORD

2 stops28h 01mUnited Airlines

Deal found 9/14

$709

Mon 12/15:32 amORD - BKK

2 stops28h 48mDelta

Mon 12/1512:55 amBKK - ORD

2 stops36h 04mDelta

Deal found 9/14

$710

Tue 11/42:40 pmORD - BKK

1 stop31h 00mCathay Pacific

Wed 11/125:40 pmBKK - ORD

1 stop32h 20mCathay Pacific

Deal found 9/14

$724

Thu 10/3012:15 pmORD - HKT

1 stop44h 55mMultiple Airlines

Thu 11/610:55 pmHKT - ORD

1 stop22h 35mMultiple Airlines

Deal found 9/15

$813

Thu 11/131:10 pmORD - HKT

1 stop28h 05mEtihad Airways

Wed 11/193:10 amHKT - ORD

1 stop41h 45mEtihad Airways

Deal found 9/15

$939

Tue 11/1111:30 pmORD - CNX

1 stop22h 05mEVA Air

Tue 11/2512:10 pmCNX - ORD

2 stops44h 25mEVA Air

Deal found 9/16

$945

Thu 11/1311:50 amORD - USM

2 stops31h 20mTurkish Airlines

Sun 11/307:00 amUSM - ORD

2 stops40h 05mTurkish Airlines

Deal found 9/13

$1,033

Sat 11/18:00 amORD - CNX

2 stops44h 35mChina Airlines

Sat 11/1511:25 amCNX - ORD

2 stops47h 15mChina Airlines

Deal found 9/14

$1,055

Mon 11/177:00 amSTL - HKT

2 stops33h 50mQatar Airways

Wed 11/1912:50 amHKT - STL

2 stops36h 09mQatar Airways

Deal found 9/14

$1,208

Tue 2/311:25 amORD - BKK

1 stop24h 20mKorean Air

Mon 2/2312:55 amBKK - ORD

1 stop20h 45mKorean Air

Deal found 9/15

$699

Thu 9/259:20 amMDW - BKK

2 stops27h 45mDelta

Tue 10/219:50 amBKK - MDW

2 stops24h 24mDelta

Deal found 9/16

$710

Wed 10/298:14 pmORD - BKK

2 stops27h 11mUnited Airlines

Wed 1/289:10 amBKK - ORD

2 stops33h 05mUnited Airlines

Deal found 9/16

$712

Tue 1/272:40 pmORD - BKK

1 stop32h 25mCathay Pacific

Tue 2/177:15 pmBKK - ORD

1 stop30h 45mCathay Pacific

Deal found 9/15

$724

Mon 2/911:25 amORD - BKK

1 stop22h 55mKorean Air

Wed 2/2511:15 pmBKK - ORD

1 stop22h 25mKorean Air

Deal found 9/14

$699

Mon 9/229:20 amMDW - BKK

2 stops27h 45mDelta

Tue 10/2111:30 pmBKK - MDW

2 stops34h 44mDelta

Deal found 9/16

$710

Thu 1/224:10 pmORD - BKK

2 stops30h 15mUnited Airlines

Thu 2/124:55 pmBKK - ORD

2 stops25h 21mUnited Airlines

Deal found 9/14

$723

Sun 11/302:40 pmORD - CNX

1 stop39h 10mCathay Pacific

Tue 12/237:40 pmCNX - ORD

1 stop30h 20mCathay Pacific

Deal found 9/14

$734

Tue 9/239:35 amMDW - BKK

2 stops24h 10mDelta

Wed 10/229:50 amBKK - MDW

2 stops24h 24mDelta

Deal found 9/16

$710

Mon 9/2912:40 pmORD - KBV

2 stops43h 30mMultiple Airlines

Thu 10/29:00 amKBV - ORD

2 stops42h 10mMultiple Airlines

Deal found 9/16

$870

Tue 11/258:47 amORD - BKK

3 stops37h 38mUnited Airlines

Thu 12/254:55 pmBKK - ORD

3 stops29h 22mUnited Airlines

Deal found 9/15

$727

Sun 2/1511:25 amORD - BKK

1 stop24h 20mKorean Air

Sun 3/1512:55 amBKK - ORD

1 stop20h 45mKorean Air

Deal found 9/16

$748

Tue 10/141:55 pmORD - HKT

1 stop21h 40mEtihad Airways

Tue 10/219:30 amHKT - ORD

1 stop35h 15mEtihad Airways

Deal found 9/15

$939

Wed 11/511:30 pmORD - CNX

2 stops30h 30mEVA Air

Tue 11/187:45 pmCNX - ORD

2 stops36h 50mEVA Air

Deal found 9/14

$981

Fri 2/1311:25 amORD - BKK

1 stop22h 55mKorean Air

Wed 2/2512:55 amBKK - ORD

1 stop20h 45mKorean Air

Deal found 9/14

$748

Sun 9/219:29 amMDW - BKK

2 stops24h 16mDelta

Tue 10/219:50 amBKK - MDW

2 stops24h 24mDelta

Deal found 9/16

$759

Fri 11/284:25 pmORD - HKT

2 stops28h 10mMultiple Airlines

Sun 12/710:30 pmHKT - ORD

2 stops28h 20mMultiple Airlines

Deal found 9/15

$945

Sun 11/91:10 pmORD - HKT

1 stop21h 25mEtihad Airways

Fri 11/143:10 amHKT - ORD

1 stop41h 45mEtihad Airways

Deal found 9/15

$964

Sun 9/2812:30 amORD - KBV

2 stops31h 15mEVA Air

Thu 10/29:30 amKBV - ORD

2 stops23h 15mEVA Air

Deal found 9/16

$984

Thu 10/166:00 amMDW - BKK

2 stops29h 25mDelta

Sun 10/2611:15 pmBKK - MDW

2 stops34h 59mDelta

Deal found 9/14

$760

Last-minute flights from Illinois to Thailand
Discover last-minute flight deals from Illinois to Thailand. Data last updated September 16, 2025 and is based on user searches.

Wed 9/174:00 pmORD - BKK

1 stop19h 50mCathay Pacific

Tue 9/303:00 pmBKK - ORD

1 stop35h 25mCathay Pacific

Deal found 9/14

$679

Wed 9/174:00 pmORD - BKK

1 stop19h 50mCathay Pacific

Wed 9/244:25 pmBKK - ORD

1 stop34h 00mCathay Pacific

Deal found 9/13

$694

Wed 9/179:20 amMDW - BKK

2 stops27h 45mDelta

Tue 9/239:50 amBKK - MDW

2 stops35h 03mDelta

Deal found 9/15

$715

Mon 9/2212:40 pmORD - BKK

1 stop27h 55mUnited Airlines

Sun 10/59:35 amBKK - ORD

1 stop41h 35mUnited Airlines

Deal found 9/16

$683

Mon 9/229:20 amMDW - BKK

2 stops27h 45mDelta

Tue 10/2111:30 pmBKK - MDW

2 stops34h 44mDelta

Deal found 9/16

$710

Wed 9/244:00 pmORD - BKK

1 stop19h 50mCathay Pacific

Wed 10/14:25 pmBKK - ORD

1 stop34h 00mCathay Pacific

Deal found 9/16

$693

Sat 9/2711:45 pmORD - BKK

1 stop27h 40mTurkish Airlines

Tue 10/711:00 amBKK - ORD

1 stop34h 40mTurkish Airlines

Deal found 9/15

$681

Wed 10/14:00 pmORD - BKK

1 stop31h 05mCathay Pacific

Mon 10/1312:30 pmBKK - ORD

1 stop37h 55mCathay Pacific

Deal found 9/14

$684

Wed 10/14:00 pmORD - BKK

1 stop19h 50mCathay Pacific

Sun 10/57:00 pmBKK - ORD

1 stop31h 25mCathay Pacific

Deal found 9/15

$688

Wed 10/14:00 pmORD - BKK

1 stop19h 50mCathay Pacific

Wed 10/227:00 pmBKK - ORD

1 stop31h 25mCathay Pacific

Deal found 9/15

$691

Tue 10/214:00 pmORD - BKK

1 stop30h 00mCathay Pacific

Tue 11/114:55 pmBKK - ORD

1 stop33h 05mCathay Pacific

Deal found 9/14

$680

Tue 10/214:00 pmORD - BKK

1 stop31h 30mCathay Pacific

Wed 11/51:05 pmBKK - ORD

1 stop36h 55mCathay Pacific

Deal found 9/14

$682

One-way flights from Illinois to Thailand
Search for one-way flight options from Illinois to Thailand. Find affordable one-way fares based on user searches. Data last updated September 16, 2025.

Wed 1/76:50 pmORD - BKK

2 stops58h 00mPhilippine Airlines

Deal found 9/14

$368

Sun 11/98:20 pmORD - BKK

1 stop29h 45mTurkish Airlines

Deal found 9/14

$371

Mon 9/224:00 pmORD - BKK

1 stop30h 00mCathay Pacific

Deal found 9/16

$376

Tue 9/304:00 pmORD - BKK

1 stop19h 50mCathay Pacific

Deal found 9/15

$378

Tue 2/248:20 pmORD - BKK

1 stop29h 45mTurkish Airlines

Deal found 9/13

$379

Fri 11/77:45 pmSTL - BKK

3 stops36h 40mMultiple Airlines

Deal found 9/15

$382

Thu 2/1211:50 amORD - BKK

1 stop27h 30mTurkish Airlines

Deal found 9/16

$382

Mon 1/1211:50 amORD - BKK

1 stop27h 30mTurkish Airlines

Deal found 9/16

$383

Tue 10/285:56 pmMDW - BKK

2 stops39h 29mMultiple Airlines

Deal found 9/14

$384

Wed 1/1411:50 amORD - BKK

1 stop27h 30mTurkish Airlines

Deal found 9/16

$386

Tue 10/286:40 amORD - BKK

2 stops50h 45mMultiple Airlines

Deal found 9/14

$388

Fri 3/68:20 pmORD - BKK

1 stop23h 20mTurkish Airlines

Deal found 9/16

$389

Fly from

Fly to

Route

Depart

Return

Price

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Wed 11/5

11:15 am-12:45 am

1 stop24h 30m

Bangkok Suvarnabhumi

Sun 11/9

12:55 am-8:30 am

1 stop20h 35m

$699

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Tue 2/3

11:25 am-12:45 am

1 stop24h 20m

Bangkok Suvarnabhumi

Mon 2/23

12:55 am-8:40 am

1 stop20h 45m

$699

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Mon 2/9

11:25 am-11:20 pm

1 stop22h 55m

Bangkok Suvarnabhumi

Wed 2/25

11:15 pm-8:40 am

1 stop22h 25m

$699

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Wed 3/4

4:25 pm-5:10 am

1 stop23h 45m

Bangkok Suvarnabhumi

Tue 3/10

9:10 am-1:11 am

2 stops28h 01m

$709

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Mon 12/1

5:32 am-11:20 pm

2 stops28h 48m

Bangkok Suvarnabhumi

Mon 12/15

12:55 am-11:59 pm

2 stops36h 04m

$710

ChicagoBangkok

MDW - BKK

MDWBKK

Chicago Midway

Thu 9/25

9:20 am-1:05 am

2 stops27h 45m

Bangkok Suvarnabhumi

Tue 10/21

9:50 am-10:14 pm

2 stops24h 24m

$710

ChicagoBangkok

MDW - BKK

MDWBKK

Chicago Midway

Mon 9/22

9:20 am-1:05 am

2 stops27h 45m

Bangkok Suvarnabhumi

Tue 10/21

11:30 pm-10:14 pm

2 stops34h 44m

$710

ChicagoBangkok

MDW - BKK

MDWBKK

Chicago Midway

Tue 9/23

9:35 am-9:45 pm

2 stops24h 10m

Bangkok Suvarnabhumi

Wed 10/22

9:50 am-10:14 pm

2 stops24h 24m

$710

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Wed 10/29

8:14 pm-11:25 am

2 stops27h 11m

Bangkok Suvarnabhumi

Wed 1/28

9:10 am-5:15 am

2 stops33h 05m

$712

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Thu 1/22

4:10 pm-11:25 am

2 stops30h 15m

Bangkok Suvarnabhumi

Thu 2/12

4:55 pm-5:16 am

2 stops25h 21m

$723

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 60 results

...

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, September is the cheapest month in which you can book a flight from Illinois to Thailand (average of $900). Flying from Illinois to Thailand in December is currently the most expensive (average of $1,507). 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 IL to TH?

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

Related info for your journey

How long is the flight from Illinois to Thailand?
Korean Air, United Airlines, and Delta can get you from Illinois to Thailand in just under 23h 45m. Your travel time can differ by up to 5h 03m. 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 Turkish Airlines, with whom users have recently found tickets for as low as $392. However, be on the lookout for offers from Air India and Korean Air, 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, September is the cheapest month in which you can book a flight from Illinois to Thailand (average of $900). Flying from Illinois to Thailand in December is currently the most expensive (average of $1,507). 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

Top 10 airlines flying from Illinois to Thailand

Airline	Cheapest	Average	Flexibility	On-time
Emirates	Cheapest$503	Average$1,391	FlexibilityNo cancel fee	On-time75%
Air India	Cheapest$619	Average$924	FlexibilityNo cancel fee	On-timeN/A
ANA	Cheapest$685	Average$937	FlexibilityNo cancel fee	On-time80%
Cathay Pacific	Cheapest$686	Average$1,051	FlexibilityNo cancel fee	On-time72%
United Airlines	Cheapest$709	Average$896	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$710	Average$1,198	FlexibilityNo cancel fee	On-time71%
Korean Air	Cheapest$722	Average$1,140	FlexibilityNo cancel fee	On-time81%
Turkish Airlines	Cheapest$770	Average$1,088	FlexibilityNo cancel fee	On-time77%
Japan Airlines	Cheapest$815	Average$977	FlexibilityNo cancel fee	On-time79%
Etihad Airways	Cheapest$820	Average$1,169	FlexibilityNo cancel fee	On-time75%

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$368+ 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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to Thailand with Cheapflights

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Cheap flight deals from Illinois to Thailand

Keep the following information in mind while searching for Illinois to Thailand flight deals. Data was last updated September 16, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Illinois to Thailand

Cheapest flights from Illinois to ThailandExplore 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 September 16, 2025.

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 September 16, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Thailand that are best for you.

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.

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?

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

Find hourly flight availability from Illinois to Thailand. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

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?

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

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

How can I find direct flights from Illinois to Thailand?

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

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

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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.

Top 10 airlines flying from Illinois to Thailand

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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 September 16, 2025.