What is the difference between the most popular and the most frequent airline at Chicago?

EVA Air operates the most flights from Thailand to Chicago at 0 per week, while Thai Airways is the airline most often selected by KAYAK users searching for flights from Thailand to Chicago. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.

Which airports serve Chicago?

Flights to Chicago arrive at: Chicago Midway (MDW), Chicago O'Hare Intl (ORD) and Chicago Greater Rockford (RFD).

Which airports serve Chicago and the surrounding area?

Flights to Chicago can arrive at several major airports serving the metro area, including Chicago Midway (MDW), Chicago O'Hare Intl (ORD) and Chicago Greater Rockford (RFD). Nearby alternatives within 80.5 km of Chicago include Chicago Midway (MDW). This airport is not in Chicago itself but may be useful depending on your route, airline, and onward travel plans.

Which city has the cheapest flights to Chicago?

Based on fares booked in the past 5 days, the cheapest flights to Chicago are from Bangkok, starting at ฿28,443 return.

How do I know if a flight to Chicago is a good deal?

A good deal on a flight to Chicago is around ฿36,650 return. This fare is in the lowest 25% of return flight prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

How expensive are last-minute flights to Chicago?

Last-minute fares to Chicago (booked within two weeks of departure) are typically 29% higher than the average return fare of ฿40,770.

What is the cheapest flight to Chicago?

Bangkok Suvarnabhumi Airport to Chicago is the cheapest route at ฿28,443 return, found in the past 5 days on KAYAK. KAYAK data shows this is also the most popular route.

How much is a flight to Chicago?

On average, a return flight from Thailand to Chicago costs ฿40,770, based on KAYAK data over the past 12 months. Return fares from Bangkok Suvarnabhumi Airport average ฿40,680, while Phuket City runs a bit higher at ฿42,719.

What is the cheapest day to fly to Chicago?

Sunday is the cheapest day to fly to Chicago at ฿40,116 return on average over the past 12 months on KAYAK. Saturday is the most expensive at ฿45,918.

What is the cheapest month to fly to Chicago?

•January is the cheapest month to fly to Chicago with an average price of ฿32,602 return. •May (฿47,830) and December (฿44,409) are the most expensive. •Based on KAYAK data over the past 12 months.

What is the cheapest time of day to fly to Chicago?

Morning flights to Chicago are the cheapest at ฿39,981 return on average. Evening flights are the most expensive at ฿55,477.

What is a good deal for flights to Chicago?

Flights under ฿36,650 are considered a good deal. 25% of KAYAK users found return flights to Chicago at or below these prices, with the lowest fares from: •Bangkok Suvarnabhumi Airport ฿36,456.

When are flights to Chicago the cheapest?

Flights to Chicago are cheapest 18 weeks before departure. Booking in this window typically costs about 42% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

What are the most popular airlines flying to Chicago?

Thai Airways is the most popular airline flying to Chicago among KAYAK users, followed by Korean Air and ANA.

฿15,429 CHEAP FLIGHTS to Chicago in 2026/27

Save 30% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest return flight

฿28,443

Typical prices: ฿36,650-฿49,838

เอทิฮัดแอร์เวย์, Cathay Pacific

Thu 8/11Sat 24/11

BKK - ORD • 1 stop

Cheapest one-way flight

฿15,563

Typical prices: ฿21,800-฿30,665

Multiple Airlines

Thu 15/11

HKT - ORD • 2 stops

Top airlines

EVA Air

Best reviews • 8.5 score

Airline reviews

Top routes

BKK - CHI

Cheapest • 9% average savings

HKT - CHI

Most popular

Insights

When to book

18 weeks

in advance

Our data shows that travellers who book at least 18 weeks in advance save around 42% compared to booking last minute.

Insights

When to travel

January

Cheapest • 20% price drop

April

Most popular

Good to know

Start a new search

KAYAK searches hundreds of sites at once to find you the best travel deals.

We hope you enjoy your trip to Chicago!

Flight Deals

Cheap Flights to Chicago

Discover the best prices for you by selecting your travel dates on KAYAK.

Return

One-way

Last minute

All Flight Deals

Recent return flight deals to Chicago

Sun 8 Nov - Tue 24 Nov

19:55 - 07:35BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

24h 40m1 stop Abu Dhabi Zayed Intl

14:10 - 15:55ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

36h 45m1 stop Hong Kong Intl

฿28,443Multiple Airlines

Wed 18 Nov - Fri 27 Nov

19:55 - 07:35BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

24h 40m1 stop Abu Dhabi Zayed Intl

13:15 - 23:40ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

21h 25m1 stop Abu Dhabi Zayed Intl

฿28,913เอทิฮัดแอร์เวย์

Thu 24 Dec - Sat 16 Jan

01:05 - 08:30BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

20h 25m1 stop Incheon Intl

11:10 - 23:05ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

22h 55m1 stop Incheon Intl

฿34,648Korean Air

Thu 24 Dec - Sat 16 Jan

21:40 - 08:30BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

23h 50m1 stop Incheon Intl

11:10 - 23:05ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

22h 55m1 stop Incheon Intl

฿34,648Korean Air

Fri 25 Dec - Wed 6 Jan

21:40 - 21:39BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

36h 59m2 stops Incheon Intl Minneapolis St Paul

17:45 - 00:20ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

41h 35m2 stops Detroit Metropolitan Wayne County Incheon Intl

฿34,917เดลต้า

Thu 24 Dec - Tue 12 Jan

14:20 - 05:09BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

27h 49m2 stops Tokyo Haneda Los Angeles

16:25 - 16:20ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

34h 55m1 stop Tokyo Haneda

฿35,017ANA

Thu 29 Oct - Tue 24 Nov

09:50 - 22:05BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

24h 15m2 stops Incheon Intl Salt Lake City

08:29 - 23:05ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

25h 36m2 stops Detroit Metropolitan Wayne County Incheon Intl

฿35,151เดลต้า

Wed 23 Dec - Wed 19 May

14:20 - 07:20BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

30h 00m1 stop Tokyo Haneda

07:15 - 23:55ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

28h 40m2 stops Los Angeles Tokyo Narita

฿35,319ANA

Thu 12 Nov - Mon 16 Nov

11:40 - 12:30USM Ko Samui-ORD Chicago O'Hare Intl

37h 50m1 stop Hong Kong Intl

14:10 - 19:35ORD Chicago O'Hare Intl-USM Ko Samui

40h 25m1 stop Hong Kong Intl

฿51,285Cathay Pacific

Thu 12 Nov - Mon 16 Nov

11:40 - 12:30USM Ko Samui-ORD Chicago O'Hare Intl

37h 50m1 stop Hong Kong Intl

14:10 - 19:35ORD Chicago O'Hare Intl-USM Ko Samui

40h 25m1 stop Hong Kong Intl

฿51,385Cathay Pacific

Recent last minute flight deals to Chicago

Thu 22 Oct - Mon 26 Oct

07:55 - 10:45BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

38h 50m1 stop Tokyo Narita

14:30 - 05:05ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

26h 35m1 stop Tokyo Haneda

฿35,051Japan Airlines

Thu 22 Oct - Mon 26 Oct

07:55 - 21:29BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

25h 34m2 stops Tokyo Narita Seattle/Tacoma Intl

14:30 - 05:05ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

26h 35m1 stop Tokyo Haneda

฿35,286American Airlines

Thu 22 Oct - Mon 26 Oct

15:45 - 09:37BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

29h 52m3 stops Hong Kong Intl Los Angeles Washington, D.C. Dulles Intl

17:48 - 11:30ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

29h 42m3 stops Denver Intl Los Angeles Hong Kong Intl

฿35,386United Airlines

Thu 22 Oct - Mon 26 Oct

15:45 - 04:45BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

25h 00m2 stops Hong Kong Intl Los Angeles

14:30 - 11:30ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

33h 00m3 stops Denver Intl Los Angeles Hong Kong Intl

฿35,386United Airlines

Thu 22 Oct - Mon 26 Oct

15:45 - 13:15BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

33h 30m2 stops Hong Kong Intl Los Angeles

20:05 - 11:30ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

27h 25m2 stops Los Angeles Hong Kong Intl

฿35,386United Airlines

Thu 22 Oct - Mon 26 Oct

15:45 - 05:15BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

25h 30m2 stops Hong Kong Intl Los Angeles

11:30 - 00:20ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

24h 50m1 stop Tokyo Narita

฿35,520United Airlines

Sun 25 Oct - Wed 4 Nov

16:55 - 05:20BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

24h 25m2 stops Hong Kong Intl Los Angeles

16:39 - 11:30ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

29h 51m2 stops Los Angeles Hong Kong Intl

฿35,621United Airlines

Sun 25 Oct - Wed 4 Nov

16:55 - 05:20BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

24h 25m2 stops Hong Kong Intl Los Angeles

14:30 - 11:30ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

32h 00m3 stops Denver Intl Los Angeles Hong Kong Intl

฿35,688United Airlines

Wed 21 Oct - Mon 26 Oct

03:15 - 08:35BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

41h 20m1 stop Abu Dhabi Zayed Intl

14:15 - 06:35ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

28h 20m1 stop Abu Dhabi Zayed Intl

฿36,158เอทิฮัดแอร์เวย์

Tue 20 Oct - Thu 5 Nov

23:35 - 14:55BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

27h 20m1 stop Tokyo Narita

07:00 - 22:50ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

26h 50m2 stops Los Angeles Tokyo Narita

฿147,180ANA

All return flight deals to Chicago

Sun 8 Nov - Tue 24 Nov

19:55 - 07:35BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

24h 40m1 stop Abu Dhabi Zayed Intl

14:10 - 15:55ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

36h 45m1 stop Hong Kong Intl

฿28,443Multiple Airlines

Wed 18 Nov - Fri 27 Nov

19:55 - 07:35BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

24h 40m1 stop Abu Dhabi Zayed Intl

13:15 - 23:40ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

21h 25m1 stop Abu Dhabi Zayed Intl

฿28,913เอทิฮัดแอร์เวย์

Thu 24 Dec - Sat 16 Jan

01:05 - 08:30BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

20h 25m1 stop Incheon Intl

11:10 - 23:05ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

22h 55m1 stop Incheon Intl

฿34,648Korean Air

Thu 24 Dec - Sat 16 Jan

21:40 - 08:30BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

23h 50m1 stop Incheon Intl

11:10 - 23:05ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

22h 55m1 stop Incheon Intl

฿34,648Korean Air

Fri 25 Dec - Wed 6 Jan

21:40 - 21:39BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

36h 59m2 stops Incheon Intl Minneapolis St Paul

17:45 - 00:20ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

41h 35m2 stops Detroit Metropolitan Wayne County Incheon Intl

฿34,917เดลต้า

Thu 24 Dec - Tue 12 Jan

14:20 - 05:09BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

27h 49m2 stops Tokyo Haneda Los Angeles

16:25 - 16:20ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

34h 55m1 stop Tokyo Haneda

฿35,017ANA

Thu 29 Oct - Tue 24 Nov

09:50 - 22:05BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

24h 15m2 stops Incheon Intl Salt Lake City

08:29 - 23:05ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

25h 36m2 stops Detroit Metropolitan Wayne County Incheon Intl

฿35,151เดลต้า

Wed 23 Dec - Wed 19 May

14:20 - 07:20BKK Bangkok Suvarnabhumi-ORD Chicago O'Hare Intl

30h 00m1 stop Tokyo Haneda

07:15 - 23:55ORD Chicago O'Hare Intl-BKK Bangkok Suvarnabhumi

28h 40m2 stops Los Angeles Tokyo Narita

฿35,319ANA

Thu 12 Nov - Mon 16 Nov

11:40 - 12:30USM Ko Samui-ORD Chicago O'Hare Intl

37h 50m1 stop Hong Kong Intl

14:10 - 19:35ORD Chicago O'Hare Intl-USM Ko Samui

40h 25m1 stop Hong Kong Intl

฿51,285Cathay Pacific

Thu 12 Nov - Mon 16 Nov

11:40 - 12:30USM Ko Samui-ORD Chicago O'Hare Intl

37h 50m1 stop Hong Kong Intl

14:10 - 19:35ORD Chicago O'Hare Intl-USM Ko Samui

40h 25m1 stop Hong Kong Intl

฿51,385Cathay Pacific

Booking Insights

Price, demand, and travel trends for flights to Chicago

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

What is the cheapest flight to Chicago?: Bangkok Suvarnabhumi Airport to Chicago is the cheapest route at ฿28,443 return, found in the past 5 days on KAYAK. KAYAK data shows this is also the most popular route.
How much is a flight to Chicago? Average and cheapest price for all return flights to Chicago from each origin found by users searching on KAYAK in the last 12 months.: On average, a return flight from Thailand to Chicago costs ฿40,770, based on KAYAK data over the past 12 months. Return fares from Bangkok Suvarnabhumi Airport average ฿40,680, while Phuket City runs a bit higher at ฿42,719.
What is the cheapest day to fly to Chicago?: Sunday is the cheapest day to fly to Chicago at ฿40,116 return on average over the past 12 months on KAYAK. Saturday is the most expensive at ฿45,918.
What is the cheapest month to fly to Chicago? To calculate monthly average prices, KAYAK takes all prices for each month over the last 12 months for flights to Chicago, removes the top 0.1% to account for outliers, then takes the median of all values for each month.: •January is the cheapest month to fly to Chicago with an average price of ฿32,602 return.
•May (฿47,830) and December (฿44,409) are the most expensive.
•Based on KAYAK data over the past 12 months.
What is the cheapest time of day to fly to Chicago? Average price for all return flights depending on time of departure, seen by users on KAYAK in the last 12 months.: Morning flights to Chicago are the cheapest at ฿39,981 return on average. Evening flights are the most expensive at ฿55,477.
What is a good deal for flights to Chicago?: Flights under ฿36,650 are considered a good deal. 25% of KAYAK users found return flights to Chicago at or below these prices, with the lowest fares from:
•Bangkok Suvarnabhumi Airport ฿36,456.
When are flights to Chicago the cheapest?: Flights to Chicago are cheapest 18 weeks before departure. Booking in this window typically costs about 42% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Low season	October
High season	April
Cheapest flight	฿15,563

Beat the crowds with an average 34% drop in traveller numbers.

The most popular month to fly with an average 54% increase in traveller numbers.

One-way flight from Phuket City to Chicago O'Hare Intl Airport

When to book flights to Chicago

Are your dates flexible? Find out the best times to travel to Chicago based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated return price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. The information is for flights to Chicago based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

How do I know if a flight to Chicago is a good deal?
A good deal on a flight to Chicago is around ฿36,650 return. This fare is in the lowest 25% of return flight prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.
Which airports serve Chicago?
Flights to Chicago arrive at: Chicago Midway (MDW), Chicago O'Hare Intl (ORD) and Chicago Greater Rockford (RFD).
Which city has the cheapest flights to Chicago?
Based on fares booked in the past 5 days, the cheapest flights to Chicago are from Bangkok, starting at ฿28,443 return.
How expensive are last-minute flights to Chicago?
Last-minute fares to Chicago (booked within two weeks of departure) are typically 29% higher than the average return fare of ฿40,770.
What is the difference between the most popular and the most frequent airline at Chicago?
EVA Air operates the most flights from Thailand to Chicago at 0 per week, while Thai Airways is the airline most often selected by KAYAK users searching for flights from Thailand to Chicago. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.
Which airports serve Chicago and the surrounding area?
Flights to Chicago can arrive at several major airports serving the metro area, including Chicago Midway (MDW), Chicago O'Hare Intl (ORD) and Chicago Greater Rockford (RFD). Nearby alternatives within 80.5 km of Chicago include Chicago Midway (MDW). This airport is not in Chicago itself but may be useful depending on your route, airline, and onward travel plans.

For the best chance at a low fare to Chicago, book around 18 weeks before departure. Based on KAYAK data from the last 12 months, fares are historically about 42% lower during this window than last-minute fares.
For flights to Chicago, a good return fare is around ฿36,650. If you find a fare below that, you're getting a strong deal.
If your travel dates are flexible, consider flying to Chicago in January. Return fares historically average ฿32,602, making January the cheapest month to travel based on KAYAK data from the last 12 months.
Before you book:

• Check the route's typical price range so you can spot a deal.
• Confirm baggage fees and seat selection costs on budget carriers.
• Verify whether you need any travel documents beyond an ID.
• Pick a departure airport, since your nearest may not be the cheapest origin.
Shift your departure to morning to save up to ฿15,496 on a return flight. Morning flights to Chicago average ฿39,981 compared to ฿55,477 for afternoon flights.
Once you arrive in Chicago, a great place to start is Chicago Riverwalk. It is popular with first-time visitors and can give you a good feel for the area.

More options for your flight to Chicago

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฿15,429 Find Cheap Flights to Chicago – Compare and Save

Everything you should know

Cheap Flights to Chicago

Recent return flight deals to Chicago

Recent one-way flight deals to Chicago

Recent last minute flight deals to Chicago

All return flight deals to Chicago

Price, demand, and travel trends for flights to Chicago

What is the cheapest flight to Chicago?

How much is a flight to Chicago?

What is the cheapest day to fly to Chicago?

What is the cheapest month to fly to Chicago?

What is the cheapest time of day to fly to Chicago?

What is a good deal for flights to Chicago?

When are flights to Chicago the cheapest?

What are the most popular airlines flying to Chicago?

Key details for flights to Chicago

Low season

High season

Cheapest flight

When to book flights to Chicago

Your questions about flights to Chicago, answered

Your guide to booking Chicago flights

More options for your flight to Chicago

Complete your trip to Chicago with a hotel stay or car hire

Cabin class types available on flights to Chicago

Flights from local origins to Chicago

Choose which airport to fly into in Chicago

Flights to other popular destinations

Find deals for your return flight