How long is the flight from Bangkok to Chicago O'Hare Intl Airport?

Airlines like Thai Airways, เอทิฮัดแอร์เวย์, and เดลต้า fly from Bangkok to Chicago O'Hare Intl Airport in about 33h 24m. The time it takes to get you to your destination can typically vary by up to 7h 56m. The distance from Bangkok to Chicago O'Hare Intl Airport is about 13752 km. Both multi-stop and direct flights can be found to your destination and back.

What are the cheapest airlines flying from Bangkok to Chicago O'Hare Intl Airport round-trip?

Currently priced at ฿28,103, Thai Airways will fly you from Bangkok to Chicago O'Hare Intl Airport and back. In addition to Thai Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Korean Air and ANA - these airlines can fly you to your destination from ฿31,966 and ฿32,820, respectively. You may be able to fly from Bangkok to Chicago O'Hare Intl Airport for 31% less than the average price by searching for these airlines.

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

What are the most popular airlines that fly from Bangkok to Chicago O'Hare Intl Airport?

The most popular airlines flying from Bangkok to Chicago O'Hare Intl Airport are Thai Airways, ANA and Korean Air. Something to consider prior to booking your flight.

What is the cheapest time of day to fly from BKK to ORD?

When flying from Bangkok to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Bangkok to O'Hare Intl that include hotel bookings?

Yes. In addition to deals on Bangkok to O'Hare Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Bangkok to O'Hare Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bangkok to O'Hare Intl.

Can I find deals for business class flights from Bangkok to O'Hare Intl?

Yes. Cheapflights offers flight deals from Bangkok to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

฿17,034+ Cheap Flights from Bangkok to Chicago O'Hare Intl Airport

Cheap flight deals from Bangkok to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Bangkok to O'Hare Intl
Explore the most affordable flight options available from Bangkok to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 September 2026.

Tue 20/1012:40 -

1 stop20h 05m

Mon 26/1000:30 -

1 stop22h 20m

Deal found 5/9฿26,538

Fri 2/1012:40 -

1 stop20h 05m

Sat 17/1000:30 -

1 stop22h 10m

Deal found 4/9฿27,130

Sun 18/1008:15 -

1 stop24h 30m

Sat 24/1000:30 -

1 stop22h 20m

Deal found 5/9฿27,360

Thu 15/1012:40 -

1 stop20h 05m

Tue 27/1000:30 -

1 stop22h 20m

Deal found 8/9฿27,557

Fri 23/1012:40 -

1 stop20h 05m

Thu 29/1000:30 -

1 stop28h 20m

Deal found 8/9฿28,215

Thu 8/1017:15 -

1 stop39h 30m

Fri 27/1123:30 -

1 stop28h 20m

Deal found 9/9฿28,939

Sat 19/1217:30 -

1 stop39h 05m

Wed 30/1223:30 -

1 stop22h 20m

Deal found 7/9฿29,004

Fri 11/912:40 -

1 stop20h 05m

Tue 29/900:30 -

1 stop33h 05m

Deal found 8/9฿29,103

Fri 25/908:15 -

1 stop24h 30m

Sat 3/1000:30 -

1 stop28h 20m

Deal found 6/9฿29,136

Wed 9/907:30 -

2 stops25h 15m

Thu 10/900:30 -

2 stops34h 35m

Deal found 8/9฿34,463

Tue 13/1007:30 -

2 stops25h 15m

Sun 18/1000:30 -

2 stops29h 05m

Deal found 7/9฿35,713

Fri 9/1020:25 -

2 stops31h 15m

Sat 17/1014:00 -

2 stops24h 40m

Deal found 9/9฿39,823

Best flights from Bangkok to O'Hare Intl
Discover carefully curated flight deals from Bangkok to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 September 2026.

Fri 9/1017:15 -

1 stop39h 30m

Fri 16/1000:30 -

1 stop28h 20m

Deal found 9/9฿29,761

Mon 21/903:15 -

1 stop41h 20m

Sat 26/920:25 -

1 stop39h 30m

Deal found 7/9฿33,312

Thu 24/902:35 -

2 stops33h 24m

Wed 30/905:30 -

2 stops30h 05m

Deal found 8/9฿33,937

Fri 25/907:00 -

1 stop19h 55m

Wed 30/918:06 -

2 stops27h 29m

Deal found 8/9฿33,970

Tue 22/923:50 -

1 stop28h 05m

Sat 26/920:35 -

1 stop26h 35m

Deal found 7/9฿48,110

Sun 18/1019:25 -

2 stops26h 05m

Sat 24/1000:30 -

2 stops34h 40m

Deal found 8/9฿49,360

Wed 14/1002:35 -

2 stops32h 59m

Wed 28/1005:27 -

2 stops29h 38m

Deal found 8/9฿33,970

Sat 10/1003:15 -

1 stop24h 25m

Tue 20/1014:00 -

1 stop21h 55m

Deal found 7/9฿34,332

Sat 10/1015:45 -

2 stops25h 00m

Sat 17/1016:40 -

2 stops28h 55m

Deal found 9/9฿34,430

Fri 25/923:30 -

2 stops28h 44m

Sun 4/1007:45 -

2 stops27h 50m

Deal found 6/9฿33,970

Fri 9/1003:15 -

1 stop24h 25m

Tue 20/1014:00 -

1 stop21h 55m

Deal found 7/9฿34,332

Fri 9/1015:45 -

2 stops39h 20m

Sat 17/1018:06 -

2 stops27h 29m

Deal found 9/9฿34,430

Wed 21/1002:35 -

2 stops30h 52m

Thu 29/1006:35 -

2 stops29h 45m

Deal found 7/9฿33,970

Tue 22/915:45 -

2 stops26h 35m

Sat 26/915:50 -

2 stops29h 45m

Deal found 8/9฿34,430

Wed 7/1023:50 -

1 stop28h 10m

Wed 14/1020:35 -

1 stop36h 10m

Deal found 7/9฿48,143

Sat 10/1012:10 -

1 stop39h 50m

Sat 17/1020:35 -

1 stop36h 10m

Deal found 9/9฿48,735

Fri 25/923:50 -

1 stop28h 05m

Wed 30/920:35 -

1 stop36h 10m

Deal found 8/9฿49,886

Sat 10/1023:50 -

1 stop28h 10m

Sun 25/1020:45 -

1 stop25h 20m

Deal found 6/9฿49,919

Fri 6/1123:00 -

1 stop28h 55m

Mon 9/1119:45 -

1 stop35h 25m

Deal found 4/9฿51,004

Find flight deals from Bangkok to O'Hare Intl

Round-trip from	฿26,538
One-way from	฿17,034
Popular in	April
Cheapest in	January
Average price	฿36,502

Thai Airways
20/10-26/10
2 total stops
42h 25m total
Bangkok to Chicago

Search Deals

Thai Airways
23/1-31/12
1 total stop
19h 55m total
Bangkok to Chicago

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (฿279,321 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (฿42,554 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Bangkok to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BangkokChicago

BKK Bangkok Suvarnabhumi - ORD Chicago O'Hare Intl

BKKORD

Bangkok Suvarnabhumi

Thu 5/11

09:50-14:37

2 stops41h 47m

Chicago O'Hare Intl

Wed 31/12

00:00-13:00

Nonstop0h 00m

฿20,915

BangkokChicago

BKK Bangkok Suvarnabhumi - ORD Chicago O'Hare Intl

BKKORD

Bangkok Suvarnabhumi

Sun 25/10

13:45-05:40

2 stops27h 55m

Chicago O'Hare Intl

Wed 31/12

00:00-13:00

Nonstop0h 00m

฿21,145

BangkokChicago

BKK Bangkok Suvarnabhumi - ORD Chicago O'Hare Intl

BKKORD

Bangkok Suvarnabhumi

Tue 15/12

10:55-07:00

2 stops33h 05m

Chicago O'Hare Intl

Wed 31/12

00:00-13:00

Nonstop0h 00m

฿21,507

BangkokChicago

BKK Bangkok Suvarnabhumi - ORD Chicago O'Hare Intl

BKKORD

Bangkok Suvarnabhumi

Sun 28/2

19:10-15:05

2 stops56h 55m

Chicago O'Hare Intl

Wed 31/12

00:00-13:00

Nonstop0h 00m

฿21,967

Fastest return journey

BangkokChicago

BKK Bangkok Suvarnabhumi - ORD Chicago O'Hare Intl

BKKORD

Bangkok Suvarnabhumi

Tue 17/11

23:15-08:30

1 stop22h 15m

Chicago O'Hare Intl

Wed 31/12

00:00-13:00

Nonstop0h 00m

฿22,921

BangkokChicago

BKK Bangkok Suvarnabhumi - ORD Chicago O'Hare Intl

BKKORD

Bangkok Suvarnabhumi

Sun 11/10

21:40-09:30

1 stop23h 50m

Chicago O'Hare Intl

Wed 31/12

00:00-13:00

Nonstop0h 00m

฿22,954

BangkokChicago

BKK Bangkok Suvarnabhumi - ORD Chicago O'Hare Intl

BKKORD

Bangkok Suvarnabhumi

Thu 17/12

23:15-10:59

2 stops24h 44m

Chicago O'Hare Intl

Wed 31/12

00:00-13:00

Nonstop0h 00m

฿23,151

BangkokChicago

BKK Bangkok Suvarnabhumi - ORD Chicago O'Hare Intl

BKKORD

Bangkok Suvarnabhumi

Thu 17/12

01:05-10:59

2 stops22h 54m

Chicago O'Hare Intl

Wed 31/12

00:00-13:00

Nonstop0h 00m

฿23,151

BangkokChicago

BKK Bangkok Suvarnabhumi - ORD Chicago O'Hare Intl

BKKORD

Bangkok Suvarnabhumi

Wed 16/12

16:55-14:54

3 stops34h 59m

Chicago O'Hare Intl

Wed 31/12

00:00-13:00

Nonstop0h 00m

฿23,578

BangkokChicago

BKK Bangkok Suvarnabhumi - ORD Chicago O'Hare Intl

BKKORD

Bangkok Suvarnabhumi

Sat 12/12

16:55-09:39

3 stops29h 44m

Chicago O'Hare Intl

Wed 31/12

00:00-13:00

Nonstop0h 00m

฿23,578

Flights are sorted by cheapest return flights first.

Deals found on 4/9

Showing 1-10 of 41 resultsSorted by cheapest first

...

Best time to book a flight from Bangkok to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Bangkok with our price prediction graph.

TH1-ORD

BKK-ORD

DMK-ORD

Estimated return 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 Bangkok to Chicago O'Hare Intl Airport

TH1-ORD

BKK-ORD

DMK-ORD

What is the cheapest month to book a flight from Bangkok to Chicago O'Hare Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Bangkok to Chicago O'Hare Intl Airport (average of ฿31,964). Flying from Bangkok to Chicago O'Hare Intl Airport in April is currently the most expensive (average of ฿55,016). 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.

How much does it cost for a return flight from Bangkok to Chicago O'Hare Intl Airport?

Airfare is below average for this route at the moment.

Bangkok to Chicago O'Hare Intl Airport flights typically cost between ฿32,359 and ฿38,278 in October.
The cheapest return price found within the last 5 days was ฿26,538 on Thai Airways (20 Oct–26 Oct).

How far ahead should I book a flight from Bangkok to Chicago O'Hare Intl Airport?

The price you pay for your flight from Bangkok to Chicago O'Hare Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 79 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing O'Hare Intl

See what other customers who have flown with Korean Air,ANA, andThai Airways from Bangkok to Chicago O'Hare Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Korean Air

8.4

Very Good

1,221 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Korean Air

8.4

Very Good

1,221 reviews

Korean Air

8.4

Very Good

1,221 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

ANA

8.3

Very Good

1,311 reviews

Korean Air

8.4

Very Good

1,221 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

Thai Airways

7.9

Good

418 reviews

Korean Air

8.4

Very Good

1,221 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

เดลต้า

7.8

Good

8,554 reviews

Korean Air

8.4

Very Good

1,221 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

Cathay Pacific

7.6

Good

1,477 reviews

Korean Air

8.4

Very Good

1,221 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jacqueline,Aug 2025

ICN - SEA

Related info for your journey

How long is the flight from Bangkok to Chicago O'Hare Intl Airport?
Airlines like Thai Airways, เอทิฮัดแอร์เวย์, and เดลต้า fly from Bangkok to Chicago O'Hare Intl Airport in about 33h 24m. The time it takes to get you to your destination can typically vary by up to 7h 56m. The distance from Bangkok to Chicago O'Hare Intl Airport is about 13752 km. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines flying from Bangkok to Chicago O'Hare Intl Airport round-trip?
Currently priced at ฿28,103, Thai Airways will fly you from Bangkok to Chicago O'Hare Intl Airport and back. In addition to Thai Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Korean Air and ANA - these airlines can fly you to your destination from ฿31,966 and ฿32,820, respectively. You may be able to fly from Bangkok to Chicago O'Hare Intl Airport for 31% less than the average price by searching for these airlines.
Can I find deals for flights from Bangkok to O'Hare Intl that include hotel bookings?
Yes. In addition to deals on Bangkok to O'Hare Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Bangkok to O'Hare Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bangkok to O'Hare Intl.
Can I find deals for business class flights from Bangkok to O'Hare Intl?
Yes. Cheapflights offers flight deals from Bangkok to O'Hare Intl 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 Bangkok to Chicago O'Hare Intl Airport?
Currently, January is the cheapest month in which you can book a flight from Bangkok to Chicago O'Hare Intl Airport (average of ฿31,964). Flying from Bangkok to Chicago O'Hare Intl Airport in April is currently the most expensive (average of ฿55,016). 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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Top 5 airlines flying from Bangkok to O'Hare Intl

Airline	Cheapest	Average	Flexibility	On-time
Thai Airways	Cheapest฿28,103	Average฿55,007	FlexibilityNo cancel fee	On-time77%	Search Thai Airways flights
Korean Air	Cheapest฿31,966	Average฿33,827	FlexibilityNo cancel fee	On-time81%	Search Korean Air flights
ANA	Cheapest฿32,820	Average฿37,800	FlexibilityNo cancel fee	On-time80%	Search ANA flights
เดลต้า	Cheapest฿32,835	Average฿51,856	FlexibilityNo cancel fee	On-timeN/A	Search เดลต้า flights
Cathay Pacific	Cheapest฿40,309	Average฿59,060	FlexibilityNo cancel fee	On-time72%	Search Cathay Pacific flights

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How does Cheapflights help users find flights from Bangkok to O'Hare Intl?

When you search for this flight from Bangkok to O'Hare Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Bangkok to O'Hare Intl?

Cheapflights helps you find that perfect flight to O'Hare Intl from Bangkok by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Bangkok to O'Hare Intl with no change fees?

Yes, we can. To see specific flights from Bangkok to O'Hare Intl with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Bangkok to O'Hare Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to O'Hare Intl from Bangkok today and book when prices fit your budget.

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Cheap flights from Bangkok to Chicago O'Hare Intl Airport from ฿17,034

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Bangkok to O'Hare Intl

Cheapest flights from Bangkok to O'Hare IntlExplore the most affordable flight options available from Bangkok to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 September 2026.

Explore the most affordable flight options available from Bangkok to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 September 2026.

Best flights from Bangkok to O'Hare IntlDiscover carefully curated flight deals from Bangkok to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 September 2026.

Discover carefully curated flight deals from Bangkok to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 September 2026.

Last-minute flights from Bangkok to O'Hare IntlDiscover last-minute flight deals from Bangkok to O'Hare Intl. Data last updated 9 September 2026 and is based on user searches.

Discover last-minute flight deals from Bangkok to O'Hare Intl. Data last updated 9 September 2026 and is based on user searches.

One-way flights from Bangkok to O'Hare IntlSearch for one-way flight options from Bangkok to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 9 September 2026.

Search for one-way flight options from Bangkok to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 9 September 2026.

Find flight deals from Bangkok to O'Hare Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Bangkok to Chicago O'Hare Intl Airport that are best for you.

Best time to book a flight from Bangkok to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Bangkok with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from Bangkok to Chicago O'Hare Intl Airport?

How much does it cost for a return flight from Bangkok to Chicago O'Hare Intl Airport?

Airfare is below average for this route at the moment.

Bangkok to Chicago O'Hare Intl Airport flights typically cost between ฿32,359 and ฿38,278 in October.The cheapest return price found within the last 5 days was ฿26,538 on Thai Airways (20 Oct–26 Oct).

How far ahead should I book a flight from Bangkok to Chicago O'Hare Intl Airport?

The price you pay for your flight from Bangkok to Chicago O'Hare Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 79 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing O'Hare Intl

See what other customers who have flown with Korean Air,ANA, andThai Airways from Bangkok to Chicago O'Hare Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from Bangkok to Chicago O'Hare Intl Airport?

What are the cheapest airlines flying from Bangkok to Chicago O'Hare Intl Airport round-trip?

Can I find deals for flights from Bangkok to O'Hare Intl that include hotel bookings?

How can I find direct flights from Bangkok to O'Hare Intl?

Can I find deals for business class flights from Bangkok to O'Hare Intl?

What is the cheapest month to book a flight from Bangkok to Chicago O'Hare Intl Airport?

Travelling to a place near Chicago O'Hare Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Bangkok to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to O'Hare Intl by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Bangkok to O'Hare Intl by cabin class

Find flights from Bangkok to O'Hare Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Bangkok and O'Hare Intl flights

Browse other Bangkok and O'Hare Intl flight options. Last updated on 9 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top 5 airlines flying from Bangkok to O'Hare Intl

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How does Cheapflights help users find flights from Bangkok to O'Hare Intl?

Why should you use Cheapflights to find cheap flight tickets from Bangkok to O'Hare Intl?

Can Cheapflights find flights from Bangkok to O'Hare Intl with no change fees?

Can Cheapflights notify me if prices for flights from Bangkok to O'Hare Intl become cheaper?

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Cheapest flights from Bangkok to O'Hare Intl
Explore the most affordable flight options available from Bangkok to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 September 2026.

Best flights from Bangkok to O'Hare Intl
Discover carefully curated flight deals from Bangkok to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 September 2026.

Last-minute flights from Bangkok to O'Hare Intl
Discover last-minute flight deals from Bangkok to O'Hare Intl. Data last updated 9 September 2026 and is based on user searches.

One-way flights from Bangkok to O'Hare Intl
Search for one-way flight options from Bangkok to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 9 September 2026.

Bangkok to Chicago O'Hare Intl Airport flights typically cost between ฿32,359 and ฿38,278 in October.
The cheapest return price found within the last 5 days was ฿26,538 on Thai Airways (20 Oct–26 Oct).