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$548+ 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ORD
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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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 February 20, 2025.

Round-trip from

$994
(Delta)

One-way from

$548
(Kiwi.com)

Popular in

January

Cheapest in

September

Average price

$1,137
From Thailand to Illinois
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One-way flight from Thailand to Illinois
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($90 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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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 February 20, 2025.

This KAYAK deal was found by Cheapflights users on 2/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1412:15 amCNX - ORD
1 stop21h 15mKorean Air
Thu 1/1511:25 amORD - CNX
1 stop22h 40mKorean Air
Deal found 2/20$990
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/711:15 pmCNX - ORD
2 stops36h 44mDelta
Wed 4/238:50 amORD - CNX
2 stops25h 05mDelta
Deal found 2/20$994
This Cathay Pacific deal was found by Cheapflights users on 2/18. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/266:40 amBKK - ORD
1 stop19h 20mCathay Pacific
Thu 4/244:00 pmORD - BKK
1 stop19h 50mCathay Pacific
Deal found 2/18$1,049
This Gotogate deal was found by Cheapflights users on 2/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/66:30 pmDMK - ORD
1 stop31h 30mCathay Pacific
Tue 3/183:40 pmORD - DMK
1 stop38h 05mCathay Pacific
Deal found 2/19$1,049
This United Airlines deal was found by Cheapflights users on 2/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/107:00 amBKK - ORD
2 stops26h 19mUnited Airlines
Wed 8/138:45 amORD - BKK
2 stops27h 10mUnited Airlines
Deal found 2/19$1,050
This Mytrip deal was found by Cheapflights users on 2/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/63:30 pmDMK - ORD
3 stops44h 36mMultiple Airlines
Tue 3/182:10 pmORD - DMK
2 stops25h 55mMultiple Airlines
Deal found 2/19$1,050
This SWISS deal was found by Cheapflights users on 2/19. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/113:40 pmBKK - ORD
2 stops37h 35mSWISS
Tue 3/188:05 pmORD - BKK
1 stop26h 35mSWISS
Deal found 2/19$1,051
This Trip.com deal was found by Cheapflights users on 2/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/612:45 pmBKK - ORD
1 stop19h 50mEVA Air
Mon 3/1712:30 amORD - BKK
1 stop22h 40mEVA Air
Deal found 2/19$1,055
This Trip.com deal was found by Cheapflights users on 2/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:00 amBKK - ORD
1 stop19h 55mANA
Thu 10/235:45 pmORD - BKK
1 stop33h 45mANA
Deal found 2/20$1,057
This Expedia deal was found by Cheapflights users on 2/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/25:10 pmBKK - ORD
1 stop39h 25mMultiple Airlines
Sat 11/156:50 pmORD - BKK
2 stops27h 20mMultiple Airlines
Deal found 2/18$1,058
This Delta deal was found by Cheapflights users on 2/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/159:50 amBKK - ORD
2 stops25h 54mDelta
Sat 7/269:30 amORD - BKK
2 stops25h 55mDelta
Deal found 2/18$1,069
This Delta deal was found by Cheapflights users on 2/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/211:15 pmBKK - MDW
2 stops32h 13mDelta
Sat 11/156:45 pmMDW - BKK
2 stops39h 35mDelta
Deal found 2/18$1,069

Find flights from Thailand to Illinois within your budget

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 February 20, 2025.

Fly from

Thailand

Fly to

Illinois

Route

Depart

Return

Price

Chiang MaiChicago

CNX - ORD

CNXORD

Chiang Mai

Mon 4/7

11:15 pm-11:59 pm

2 stops36h 44m

Chicago O'Hare Intl

Wed 4/23

8:50 am-9:55 pm

2 stops25h 05m

$994

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Wed 3/26

6:40 am-2:00 pm

1 stop19h 20m

Chicago O'Hare Intl

Thu 4/24

4:00 pm-11:50 pm

1 stop19h 50m

$1,049

BangkokChicago

DMK - ORD

DMKORD

Bangkok Don Mueang Intl

Thu 3/6

6:30 pm-1:00 pm

1 stop31h 30m

Chicago O'Hare Intl

Tue 3/18

3:40 pm-5:45 pm

1 stop38h 05m

$1,049

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Sat 5/10

7:00 am-9:19 pm

2 stops26h 19m

Chicago O'Hare Intl

Wed 8/13

8:45 am-11:55 pm

2 stops27h 10m

$1,050

BangkokChicago

DMK - ORD

DMKORD

Bangkok Don Mueang Intl

Thu 3/6

3:30 pm-11:06 pm

3 stops44h 36m

Chicago O'Hare Intl

Tue 3/18

2:10 pm-4:05 am

2 stops25h 55m

$1,050

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Tue 3/11

3:40 pm-5:15 pm

2 stops37h 35m

Chicago O'Hare Intl

Tue 3/18

8:05 pm-10:40 am

1 stop26h 35m

$1,051

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Thu 3/6

12:45 pm-7:35 pm

1 stop19h 50m

Chicago O'Hare Intl

Mon 3/17

12:30 am-11:10 am

1 stop22h 40m

$1,055

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Wed 3/5

1:00 am-8:40 am

1 stop20h 40m

Chicago O'Hare Intl

Tue 3/18

12:25 pm-1:15 pm

1 stop36h 50m

$1,058

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Sun 3/9

1:40 pm-3:45 am

2 stops27h 05m

Chicago O'Hare Intl

Sun 3/23

12:29 pm-12:20 pm

2 stops35h 51m

$1,068

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Sun 6/15

9:50 am-11:44 pm

2 stops25h 54m

Chicago O'Hare Intl

Sat 7/26

9:30 am-11:25 pm

2 stops25h 55m

$1,069

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 60 results
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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.

Travel insights for flights from Thailand to Illinois

Get recent, data-driven insights about flights from Thailand to Illinois including ideal travel times, pricing trends, and more.

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 February 20, 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.

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 February 20, 2025.
Read reviews from past customers who have flown EVA Air, Korean Air and ANA from Thailand to Illinois. 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
1,200 reviews

Food

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

EVA Air
8.4
Very good
1,200 reviews
EVA Air
8.4
Very good
1,200 reviews

Food

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

Korean Air
8.4
Very good
1,037 reviews
EVA Air
8.4
Very good
1,200 reviews

Food

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

ANA
8.4
Very good
842 reviews
EVA Air
8.4
Very good
1,200 reviews

Food

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

Japan Airlines
8.3
Very good
1,440 reviews
EVA Air
8.4
Very good
1,200 reviews

Food

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

Asiana Airlines
8.3
Very good
446 reviews
EVA Air
8.4
Very good
1,200 reviews

Food

8.0

Boarding

8.4

Comfort

8.3

Overall

8.4

Crew

8.6

Entertainment

8.0

Reviews

1 / 20

10.0
Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

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 Thai Airways ($593), Philippine Airlines ($629), and IndiGo ($637).

  • 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

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Alternative routes for Thailand to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Thailand to Illinois

Discover the top 8 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Cathay PacificCheapest$859Average$995FlexibilityNo cancel feeOn-time72%
Korean AirCheapest$905Average$1,082FlexibilityNo cancel feeOn-time81%
ANACheapest$926Average$1,067FlexibilityNo cancel feeOn-time80%
Japan AirlinesCheapest$939Average$1,029FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$939Average$1,047FlexibilityNo cancel feeOn-time69%
EVA AirCheapest$940Average$1,074FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$956Average$1,120FlexibilityNo cancel feeOn-time71%
Thai AirwaysCheapest$994Average$1,149FlexibilityNo cancel feeOn-time77%
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