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$419+ 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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BKK
Apr 27 — May 41
Sun 4/27
Sun 5/4
1 adult, Economy
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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 April 22, 2025.

Round-trip from

$784
(Travelocity)

One-way from

$419
(Expedia)

Popular in

June

Cheapest in

March

Average price

$959
From Illinois to Thailand
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One-way flight from Illinois to Thailand
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Highest demand for flights based on searches. 19% potential increase in price ($277 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($44 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 22, 2025.

This Travelocity deal was found by Cheapflights users on 4/21. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/225:45 pmORD - HKT
2 stops27h 50mMultiple Airlines
Sun 9/289:55 pmHKT - ORD
2 stops29h 00mMultiple Airlines
Deal found 4/21$787
This Gotogate deal was found by Cheapflights users on 4/22. 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.
Thu 5/14:00 pmORD - HKT
1 stop30h 50mCathay Pacific
Sun 5/116:20 pmHKT - ORD
1 stop32h 05mCathay Pacific
Deal found 4/22$793
This Gotogate deal was found by Cheapflights users on 4/21. 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 5/51:55 pmORD - HKT
2 stops34h 15mEtihad Airways
Sun 5/189:55 pmHKT - ORD
2 stops46h 50mEtihad Airways
Deal found 4/21$822
This Trip.com deal was found by Cheapflights users on 4/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/205:45 pmORD - CNX
2 stops27h 35mMultiple Airlines
Wed 8/2710:10 amCNX - ORD
2 stops34h 30mMultiple Airlines
Deal found 4/21$826
This KAYAK deal was found by Cheapflights users on 4/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/228:50 amORD - BKK
2 stops27h 05mANA
Sun 9/79:35 pmBKK - ORD
2 stops28h 54mANA
Deal found 4/22$857
This United Airlines deal was found by Cheapflights users on 4/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/512:45 pmORD - BKK
1 stop27h 50mUnited Airlines
Fri 5/309:35 amBKK - ORD
2 stops25h 58mUnited Airlines
Deal found 4/22$858
This Gurufare deal was found by Cheapflights users on 4/21. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/294:00 pmORD - BKK
1 stop19h 50mCathay Pacific
Sun 10/263:05 pmBKK - ORD
1 stop34h 55mCathay Pacific
Deal found 4/21$861
This Korean Air deal was found by Cheapflights users on 4/21. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3112:05 pmORD - BKK
1 stop37h 10mKorean Air
Tue 11/2511:15 pmBKK - ORD
1 stop22h 15mKorean Air
Deal found 4/21$866
This Gurufare deal was found by Cheapflights users on 4/22. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/14:00 pmORD - CNX
1 stop38h 40mCathay Pacific
Mon 9/810:30 amCNX - ORD
1 stop39h 55mCathay Pacific
Deal found 4/22$876
This Delta deal was found by Cheapflights users on 4/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/76:24 amORD - BKK
2 stops29h 16mDelta
Mon 5/262:35 amBKK - ORD
2 stops33h 23mDelta
Deal found 4/22$877
This Delta deal was found by Cheapflights users on 4/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/289:20 amMDW - BKK
2 stops26h 05mDelta
Thu 10/169:50 amBKK - MDW
2 stops23h 54mDelta
Deal found 4/22$877
This Trip.com deal was found by Cheapflights users on 4/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/54:00 pmORD - BKK
1 stop19h 50mMultiple Airlines
Sun 5/182:10 amBKK - ORD
2 stops45h 26mMultiple Airlines
Deal found 4/22$882

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 April 22, 2025.
Use the filters below to find and compare flights from Illinois to Thailand that are best for you.

Fly from

Illinois

Fly to

Thailand

Route

Depart

Return

Price

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

Thu 5/1

4:00 pm-10:50 am

1 stop30h 50m

Phuket City

Sun 5/11

6:20 pm-2:25 pm

1 stop32h 05m

$793

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

Mon 5/5

1:55 pm-12:10 pm

2 stops34h 15m

Phuket City

Sun 5/18

9:55 pm-8:45 am

2 stops46h 50m

$822

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Wed 8/20

5:45 pm-9:20 am

2 stops27h 35m

Chiang Mai

Wed 8/27

10:10 am-8:40 am

2 stops34h 30m

$826

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Mon 5/5

12:45 pm-4:35 am

1 stop27h 50m

Bangkok Suvarnabhumi

Fri 5/30

9:35 am-11:33 pm

2 stops25h 58m

$858

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Mon 4/28

7:50 am-11:40 pm

2 stops27h 50m

Bangkok Suvarnabhumi

Sun 5/11

11:30 pm-11:59 pm

2 stops36h 29m

$869

ChicagoPhuket City

ORD - HKT

ORDHKT

Chicago O'Hare Intl

Mon 5/5

1:55 pm-12:10 pm

2 stops34h 15m

Phuket City

Sat 5/17

12:55 am-8:45 am

1 stop43h 50m

$872

ChicagoChiang Mai

ORD - CNX

ORDCNX

Chicago O'Hare Intl

Mon 9/1

4:00 pm-6:40 pm

1 stop38h 40m

Chiang Mai

Mon 9/8

10:30 am-2:25 pm

1 stop39h 55m

$876

ChicagoBangkok

MDW - BKK

MDWBKK

Chicago Midway

Sat 5/3

6:45 pm-1:15 pm

2 stops30h 30m

Bangkok Suvarnabhumi

Tue 5/27

2:35 am-9:27 pm

2 stops30h 52m

$877

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Mon 5/5

4:00 pm-11:50 pm

1 stop19h 50m

Bangkok Suvarnabhumi

Sun 5/18

2:10 am-11:36 am

2 stops45h 26m

$882

ChicagoBangkok

ORD - BKK

ORDBKK

Chicago O'Hare Intl

Wed 5/7

4:00 pm-11:50 pm

1 stop19h 50m

Bangkok Suvarnabhumi

Mon 5/26

5:30 pm-2:25 pm

1 stop32h 55m

$888

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

Showing 1-10 of 60 results
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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, March is the cheapest month in which you can book a flight from Illinois to Thailand (average of $958). Flying from Illinois to Thailand in December is currently the most expensive (average of $1,574). 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?

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 April 22, 2025.

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.

Rainfall in Thailand by month

Plan your trip to Thailand by taking into account the average rainfall totals by month.

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.

Temperature in Thailand by month

Plan your trip to Thailand by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Thailand

Get insights into the airlines that provide service to Thailand. 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 Thailand. Reviews last updated April 22, 2025.
Read reviews from past customers who have flown EVA Air, Korean Air and Japan Airlines from Illinois to Thailand. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,180 reviews

Food

8.1

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
EVA Air
8.4
Very good
1,180 reviews
EVA Air
8.4
Very good
1,180 reviews

Food

8.1

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
Korean Air
8.4
Very good
1,062 reviews
EVA Air
8.4
Very good
1,180 reviews

Food

8.1

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
Japan Airlines
8.3
Very good
1,450 reviews
EVA Air
8.4
Very good
1,180 reviews

Food

8.1

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
China Airlines
8.3
Very good
727 reviews
EVA Air
8.4
Very good
1,180 reviews

Food

8.1

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
ANA
8.3
Very good
848 reviews
EVA Air
8.4
Very good
1,180 reviews

Food

8.1

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

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.

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

    The cheapest airline one-way is Cathay Pacific, with whom users have recently found tickets for as low as $481. 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, March is the cheapest month in which you can book a flight from Illinois to Thailand (average of $958). Flying from Illinois to Thailand in December is currently the most expensive (average of $1,574). 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.
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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 April 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
EmiratesCheapest$503Average$1,554FlexibilityNo cancel feeOn-time75%
IndiGoCheapest$735Average$1,227FlexibilityNo cancel feeOn-time80%
Air IndiaCheapest$755Average$934FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$795Average$1,122FlexibilityNo cancel feeOn-time81%
Cathay PacificCheapest$795Average$1,035FlexibilityNo cancel feeOn-time72%
Turkish AirlinesCheapest$803Average$1,048FlexibilityNo cancel feeOn-time77%
ANACheapest$806Average$1,046FlexibilityNo cancel feeOn-time80%
Etihad AirwaysCheapest$839Average$1,257FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$840Average$973FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$857Average$976FlexibilityNo cancel feeOn-time79%

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