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Illinois

$478+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — ORD
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Round-trip from

$1,046
(United Airlines)

One-way from

$478
(Kiwi.com)

Popular in

January

Cheapest in

September

Average price

$1,101
From Thailand to Illinois
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One-way flight from Thailand to Illinois
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Highest demand for flights based on searches. 5% potential increase in price ($68 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 May 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 May 1, 2025.

This United Airlines deal was found by Cheapflights users on 4/30. 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.
Tue 7/19:35 amBKK - ORD
2 stops32h 53mUnited Airlines
Sat 8/165:45 pmORD - BKK
1 stop22h 50mUnited Airlines
Deal found 4/30$1,046
This eDestinos deal was found by Cheapflights users on 4/30. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3112:05 pmBKK - ORD
1 stop38h 20mCathay Pacific
Thu 8/74:00 pmORD - BKK
1 stop19h 50mCathay Pacific
Deal found 4/30$1,053
This Cathay Pacific deal was found by Cheapflights users on 5/1. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/27:00 pmBKK - ORD
2 stops28h 23mMultiple Airlines
Fri 5/94:00 pmORD - BKK
1 stop19h 50mMultiple Airlines
Deal found 5/1$1,055
This Gotogate deal was found by Cheapflights users on 4/30. 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 10/161:35 amBKK - ORD
1 stop31h 10mEVA Air
Fri 10/2412:30 amORD - BKK
1 stop35h 10mEVA Air
Deal found 4/30$1,060
This KAYAK deal was found by Cheapflights users on 4/30. 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.
Mon 12/1511:50 amCNX - ORD
1 stop20h 45mMultiple Airlines
Thu 1/156:50 pmORD - CNX
2 stops26h 45mMultiple Airlines
Deal found 4/30$1,061
This Ovago deal was found by Cheapflights users on 4/30. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/11:55 pmBKK - ORD
1 stop37h 15mANA
Thu 5/87:20 amORD - BKK
2 stops28h 35mANA
Deal found 4/30$1,064
This KAYAK deal was found by Cheapflights users on 5/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/812:25 amBKK - ORD
2 stops32h 43mJapan Airlines
Mon 6/91:30 amORD - BKK
1 stop33h 30mJapan Airlines
Deal found 5/1$1,073
This Delta deal was found by Cheapflights users on 4/30. 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 5/302:35 amBKK - ORD
2 stops32h 42mDelta
Thu 8/76:00 amORD - BKK
2 stops29h 25mDelta
Deal found 4/30$1,076
This Korean Air deal was found by Cheapflights users on 4/30. 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.
Sun 12/1412:15 amCNX - ORD
1 stop21h 15mKorean Air
Thu 1/1511:25 amORD - CNX
1 stop22h 40mKorean Air
Deal found 4/30$1,081
This SWISS deal was found by Cheapflights users on 4/30. 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.
Sun 6/158:00 pmCNX - ORD
2 stops52h 50mSWISS
Sun 6/227:05 pmORD - CNX
2 stops30h 40mSWISS
Deal found 4/30$1,098
This Delta deal was found by Cheapflights users on 4/30. 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 7/111:15 pmCNX - ORD
2 stops50h 08mDelta
Sat 8/166:15 pmORD - CNX
2 stops39h 40mDelta
Deal found 4/30$1,101
This SWISS deal was found by Cheapflights users on 4/30. 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.
Sat 5/176:30 pmBKK - ORD
2 stops30h 15mSWISS
Sat 5/247:05 pmORD - BKK
1 stop26h 40mSWISS
Deal found 4/30$1,103

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 May 1, 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

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Tue 7/1

9:35 am-6:28 am

2 stops32h 53m

Chicago O'Hare Intl

Sat 8/16

5:45 pm-4:35 am

1 stop22h 50m

$1,046

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Sat 5/31

12:05 pm-2:25 pm

1 stop38h 20m

Chicago O'Hare Intl

Thu 8/7

4:00 pm-11:50 pm

1 stop19h 50m

$1,053

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Thu 10/16

1:35 am-8:45 pm

1 stop31h 10m

Chicago O'Hare Intl

Fri 10/24

12:30 am-11:40 pm

1 stop35h 10m

$1,060

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Fri 10/17

12:25 pm-8:45 pm

1 stop20h 20m

Chicago O'Hare Intl

Sat 10/25

6:50 pm-11:10 am

2 stops28h 20m

$1,064

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Thu 7/3

9:35 pm-3:20 pm

1 stop29h 45m

Chicago O'Hare Intl

Wed 8/13

5:45 pm-4:35 am

1 stop22h 50m

$1,069

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Sun 6/8

12:25 am-9:08 pm

2 stops32h 43m

Chicago O'Hare Intl

Mon 6/9

1:30 am-11:00 pm

1 stop33h 30m

$1,073

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Fri 5/30

2:35 am-11:17 pm

2 stops32h 42m

Chicago O'Hare Intl

Thu 8/7

6:00 am-11:25 pm

2 stops29h 25m

$1,076

Chiang MaiChicago

CNX - ORD

CNXORD

Chiang Mai

Sun 6/15

8:00 pm-12:50 pm

2 stops52h 50m

Chicago O'Hare Intl

Sun 6/22

7:05 pm-1:45 pm

2 stops30h 40m

$1,098

Chiang MaiChicago

CNX - ORD

CNXORD

Chiang Mai

Tue 7/1

11:15 pm-1:23 pm

2 stops50h 08m

Chicago O'Hare Intl

Tue 8/12

9:30 am-9:55 pm

2 stops24h 25m

$1,101

BangkokChicago

BKK - ORD

BKKORD

Bangkok Suvarnabhumi

Sat 5/17

6:30 pm-12:45 pm

2 stops30h 15m

Chicago O'Hare Intl

Sat 5/24

7:05 pm-9:45 am

1 stop26h 40m

$1,103

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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.

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 May 1, 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 May 1, 2025.
Read reviews from past customers who have flown EVA Air, Korean Air and Japan Airlines 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
1,186 reviews

Overall

8.4

Food

8.1

Comfort

8.3

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
EVA Air
8.4
Very good
1,186 reviews
EVA Air
8.4
Very good
1,186 reviews

Overall

8.4

Food

8.1

Comfort

8.3

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Korean Air
8.4
Very good
1,069 reviews
EVA Air
8.4
Very good
1,186 reviews

Overall

8.4

Food

8.1

Comfort

8.3

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Japan Airlines
8.3
Very good
1,464 reviews
EVA Air
8.4
Very good
1,186 reviews

Overall

8.4

Food

8.1

Comfort

8.3

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
China Airlines
8.3
Very good
732 reviews
EVA Air
8.4
Very good
1,186 reviews

Overall

8.4

Food

8.1

Comfort

8.3

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
ANA
8.3
Very good
852 reviews
EVA Air
8.4
Very good
1,186 reviews

Overall

8.4

Food

8.1

Comfort

8.3

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

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 Air Canada ($571), Thai Airways ($592), and IndiGo ($596).

  • 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Cathay PacificCheapest$859Average$1,044FlexibilityNo cancel feeOn-time72%
Japan AirlinesCheapest$913Average$1,042FlexibilityNo cancel feeOn-time79%
Korean AirCheapest$915Average$1,171FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$939Average$1,042FlexibilityNo cancel feeOn-time69%
ANACheapest$942Average$1,070FlexibilityNo cancel feeOn-time80%
EVA AirCheapest$986Average$1,069FlexibilityNo cancel feeOn-time74%
Thai AirwaysCheapest$994Average$1,155FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$1,004Average$1,145FlexibilityNo cancel feeOn-time71%

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