$544 Find Cheap Flights from Thailand to Chicago O'Hare Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Chicago departing on 2/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

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These are the airlines KAYAK users have selected most often from within our search results for flights to Chicago
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Cheap Flights from Thailand to Chicago

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Thailand to Chicago that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Thailand to Chicago

Mon, Nov 3 - Mon, Nov 17
Multiple Airlines Logo
8:15 am - 2:41 pmBKK-ORD
19h 26m1 stop
Multiple Airlines Logo
8:20 pm - 4:20 amORD-BKK
43h 00m1 stop
$828Multiple Airlines
Find Deal
Mon, Nov 3 - Mon, Nov 17
Multiple Airlines Logo
8:00 pm - 2:41 pmBKK-ORD
31h 41m2 stops
Multiple Airlines Logo
8:20 pm - 4:20 amORD-BKK
43h 00m1 stop
$836Multiple Airlines
Find Deal
Mon, Nov 3 - Mon, Nov 17
Multiple Airlines Logo
8:15 am - 2:41 pmBKK-ORD
19h 26m1 stop
Multiple Airlines Logo
8:20 pm - 4:20 amORD-BKK
43h 00m1 stop
$837Multiple Airlines
Find Deal
Fri, Oct 31 - Fri, Nov 7
United Airlines Logo
4:55 pm - 5:16 amBKK-ORD
24h 21m2 stops
United Airlines Logo
4:40 pm - 11:25 amORD-BKK
29h 45m2 stops
$994United Airlines
Find Deal
Sun, Nov 2 - Mon, Nov 17
Korean Air Logo
12:55 am - 8:30 amBKK-ORD
20h 35m1 stop
Korean Air Logo
11:15 am - 1:25 pmORD-BKK
37h 10m1 stop
$996Korean Air
Find Deal
Wed, Oct 29 - Thu, Nov 6
Korean Air Logo
12:55 am - 9:30 amBKK-ORD
20h 35m1 stop
Korean Air Logo
11:15 am - 12:45 amORD-BKK
24h 30m1 stop
$1,016Korean Air
Find Deal
Mon, Dec 15 - Thu, Jan 15
EVA Air Logo
11:50 am - 7:35 pmCNX-ORD
20h 45m1 stop
EVA Air Logo
11:30 pm - 10:35 amORD-CNX
22h 05m1 stop
$1,068EVA Air
Find Deal
Wed, Oct 1 - Thu, Oct 30
EVA Air Logo
11:35 am - 8:45 pmCNX-ORD
21h 10m1 stop
EVA Air Logo
5:53 pm - 10:35 amORD-CNX
28h 42m2 stops
$1,080EVA Air
Find Deal
Wed, Oct 1 - Wed, Oct 29
Cathay Pacific Logo
7:25 pm - 2:25 pmCNX-ORD
31h 00m1 stop
Cathay Pacific Logo
3:35 pm - 9:50 amORD-CNX
30h 15m1 stop
$1,445Cathay Pacific
Find Deal
Wed, Oct 1 - Wed, Oct 29
Cathay Pacific Logo
10:30 am - 2:25 pmCNX-ORD
39h 55m1 stop
Cathay Pacific Logo
3:40 pm - 9:50 amORD-CNX
30h 10m1 stop
$1,455Cathay Pacific
Find Deal

Everything you should know

When to travel
February
Cheapest • 14% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$828
Typical prices: $1,090-1271
Multiple Airlines
Mon 11/3Mon 11/17
BKK - ORD • 1 stop
Cheapest one-way
$544
Multiple Airlines
Fri 2/13
USM - ORD • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Chicago!
Booking Insights

KAYAK's insights & trends for flights to Chicago

Get data-powered insights and trends for flights to Chicago to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Chicago O'Hare Intl Airport is February, where tickets cost $966 on average for return flights. On the other hand, the most expensive months are August and January, where the average cost of tickets from Thailand is $1,258 and $1,247 respectively. For one-way flights, the best month to travel is February with an average price of $966.

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Low seasonJanuary
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly and prices are also 0% lower on average.

FAQs - booking Chicago O'Hare Airport flights

  • How far is Chicago O'Hare Intl Airport from central Chicago?

    Central Chicago is 16 miles away from Chicago O'Hare Intl Airport.

  • What is the cheapest day to fly to Chicago?

    Based on KAYAK data, the cheapest day to fly to Chicago is Friday where round-trip tickets can be as cheap as $327. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $688 on average.

  • How does KAYAK find such low prices on flights to Chicago O'Hare Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Chicago O'Hare Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Chicago O'Hare Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago O'Hare Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Chicago O'Hare Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago O'Hare Airport with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Chicago O'Hare Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago O'Hare Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Chicago O'Hare Intl Airport?

    The cheapest time of day to fly to Chicago O'Hare Intl Airport is generally in the morning, when round-trip flights cost $1,062 on average. The most expensive time of day to fly to Chicago O'Hare Intl Airport is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,541.

  • How many direct flights to Chicago O'Hare Intl Airport are there each week?

    Each week there are around 11,355 direct flights from within Thailand to Chicago O'Hare Intl Airport. The most common day for departures is Monday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Chicago O'Hare Airport

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Chicago O'Hare Airport flight deals.

Reviews of the top 5 airlines serving from Thailand to Chicago

 
See real verified KAYAK customer reviews for airlines flying to Chicago. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Thailand to Chicago. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Chicago? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
EVA AirOverall score based on 1236 reviews
8.0Entertainment
8.4Boarding
8.3Comfort
8.6Crew
8.1Food
Airline reviews

Awful had to ask for a supervisor to sit with my flight companion even t booked the tickets together weeks before

4.0 OkayAnonymous, Aug 2025TPE - SEA
Read more EVA Air reviews

Awful had to ask for a supervisor to sit with my flight companion even t booked the tickets together weeks before

EVA airlines was excellent: on time or early, safe, courteous crew. Highly recommended.

EVA! What is going on with your food!?!? Pre pandemic I used to go to Taiwan at least twice a year and always flew EVA — the food was consistently tasty for airplane food. Post pandemic, it’s not great at all. Step it up!

Flight Attendants could have been nicer and food portions could be bigger.

Excellent service from check in to boarding the crew is so pleasant to asked

I have never heard of EVA air before but I am so happy my wife and I were able to flight on their planes twice. Everything on these flights just felt better than their competitors. As someone with longer legs any bit of extra leg spaces is appreciated. The different options for food and drinks were also a plus. They were extra careful to make sure my wife's eating restrictions were taken care for. They had a before take off and landing announcements on the built in tablets for each seat and it gave out information that was very helpful. Such as what and how to declare your items in the specific country you landed in, any odd items that may be illegal to bring it (and even the reasoning why) and any other information you might need to make your post flight experience better. Oh and the seats were more comfortable, had more ability to lean and the headrest was much better for flight sleeping. The only downside was there were "forced" ads on the tablet at take off for maybe 5-10 minutes but honestly, this flight was the cheapest option and had all the benefits listed above that is such an easy trade off. Im keeping an eye out for EVA air going forward.

First time traveling with EVA.. great experience in economy class... Personnel very friendly..

Sub sandwhich for a snack through mid flight and giving a bottle water was a good idea

Everything is good staff is polite and helpful flights are on time sub sandwhich for a snack was good with a bottle of water only thing maybe more variety of food like breakfast or dinner depends on the time

The flight attendants should be nicer, on my first flight I told them I’d prefer a veggie meal sometimes and then she began to lecture me about it, it was a late flight and I wanted an easy digestion meal so that I can sleep quickly. The meals were abit odd, breakfast on my last flight had eggs, oatmeal and fish, did not taste good at all, strange combination. The economy seats are very tight and crowded, not comfortable at all. Overall for the price I paid I thought I was going to get more.

One of the best business class seats I’ve had. The lie flat seats made it comfortable to endure a 12 hour flight. Service was excellent and food was great.

Almost 6 hours of delay with over 12 gate changes. Flight was supposed to depart around 6 and instead depart after 12am. No accommodations were offered than some snacks closer to midnight when the crew was planning to throw away some snacks.

Purchased WiFi was slow to non functional. Staff was not personable or friendly. Seats were cramped. Boarding took long but I expected that.

The crew was excellent. The flight was delayed for 20 to 25 minutes. We did arrive a bit later than expected. The AC could have been better.

Very disappointed with the seat selection. During the booking, I selected seats such that my wife and I would sit next to each other. However, during check-in, we found out that the airline changed our seats and we were seated apart; and I was stuck in the middle seat with two strangers. Very disappointing experience. We would not fly ANA next time.

Luckily I just tried to sleep. But the entertainment system was awkward to operate. I hate all this stuff with apps and adding it to your phone and all. It is a nuisance. I would prefer a good magazine or newspaper in the pocket in front of me or available.

Upgrade the comfort, food and attendants. Also we arrived in Houston in the morning. The meal they served two hours before our arrival was a dinner entree. It would have been a lot nicer and much more appropriate to have had breakfast.

The seats are uncomfortable. The flight attendants are not pleasant. They do their job, but not with a ray of sunshine and warmth. The food was awful, not what I would expect from an Asian airline. All of the other Asian airlines I have flown have far better food. The food was on par with United airlines food, which is really bad. Maybe ANA should get out of the alliance with United.

Wonderful I would recommend it to fly & ride with ANA.

Poor. We weren’t able to check in online (for several hours until we gave up) for no apparent reasons although our passports were loaded successfully. When we were at the airport check-in, a rep helped us at the kiosk but she disregarded the KTN provided to her so we had to come back for it after being questioned by the TSA person…

Everything was excellent as I expected. They also had a very caring crew. I had a headache and asked a Tylenol. The crew members kept checking with me how I was doing.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

I can't believe they put my wife and I in the two middle seats! It is a very long flight and we had single flyers on either side of us blocking the way to the bathroom! There's no reason to not give one of us the isle seat so we could have managed bathroom needs and snacks with convenience. So I think very poorly of Korean air to put us both in the middle, I've never had that happen before and will probably avoid this airline in the future because of this. We tried to have them change it but they didn't so you pretty much lost a customer because of it.

Plane took off on time and I had the whole row to myself!

One of the flight attendants stepped on my foot. I was on the aisle seat. A lady inside needed to get out. So Instood. Just then, a flight attentendant came wuicklybtheoughbthe aisle and stepprd on my sock covered toes. I let out a small sound. She stopped momentarily, but didn’t ask how I was just took off of the aisle. Never came back to see how I was. Fortunately, I was not really hurt other than a slight soreness in my toes. But I found that to be very negligent.

This was an amazing flight. The crew was great. The service was great. The food provided was great.

Korean Air is unlike any other major airline I have flown with. The grace and respect that the staff has from check in to de-boarding is unmatched. The flight attendants this time were especially wonderful to my five little children. They helped us rearrange to more suitable seating, brought our children’s meals, and patiently waited for them in the aisles when they had to use the bathroom. We felt so welcome and comfortable. I really appreciate the meal voucher when our flight was delayed. I am grateful to have had such an stress-free experience.

Not many people, so you can lay down on two seats

It's good overall. Flight was packed. Inflight entertainment choices were lacking.

They were very accommodating of a dietary issue. Nice movie & tv selections. Non-stop helped get through a very long (15 hr) flight

Except that our flight was cancelled, by mail, and later moved to 12 hours prior, then the experience was good. In Bangkok we were offered a hotel, it was fine, but would have been nice to know in advance😉

The flight was mostly fine, but I really wished that seats had an outlet to charge devices considering the length of the flight (15 hours there and 14 hours back).

Although booked meal of fruit only The crew had not received this special meal The same happened on my flight Bangkok / CAN The films are so old that best is to use own computer to watch downloads . Serve nuts but they do not warm up . Service is attentive , WC clean

Terrible. It’s like they are stuck in the dark ages. I brought a standard carry on suitcase and a back pack - I was told I could only carry on 7kg per bag - in business class, I was forced to remove articles from the suitcase and put them into my backpack! That’s the most ridiculous thing I’ve ever encountered in all my years of flying. The two bags weighed the same amount but one could not be more than 7kg. Holy cow.

They used Thai Smile plane, which is a smaller model and used to service only domestic flights; hence, the plane is small and quite compact. No entertainment on the flight. While boarding was delayed, it was done in a quick manner.

I give EVA 5 stars in every category. I enjoy this airline and it's great team of employees. I always highly recommend EVA to friends and family and everyone.

The flight was delayed going out of the gate at BKK that made it a difficult challenge to get through immigration transfer at tapei and make it to my departure on time. This appears to be a recurring issue. The flight crew and cabin crew were excellent. The food was very nice.

The boarding efficiency was good. A couple of the flight attendants did not seem in the best of moods. Overall it was a good experience.

The setting configuration of the aircraft stinks. Nobody should pay business class fares and be so uncomfortable. The design of facing fellow passengers is a brilliant nincompoop.

Entertainment is limited with a relatively old catalogue. Wi-Fi never works and the cabin and lavatory had evidence of a lot of scuff marks and temporary repairs. Nothing unsafe, but a bit tatty in places.

Just want to do a little more clean up so does not smell like urine.

The economy seats are incredibly tight. A large percent of the traveling public will not fit. I will not fly Cathay again because of this. You are literally squeezing passengers for profit. The CEO should fly some economy flights.

Check in process at the kiosk, crew in flight and overall comfort was good. Food selection could have been better. Flight from Hong Kong to Los Angeles did not have any vegetarian main course option, it was either sea food or chicken. Being a vegetarian I could only eat yogurt and fruit. Most international flights have one vegetarian main course dish which I found missing in Cathay Pacific menu.

They ran out of food and were offering random food to passengers.

Short staffs, I ask stewardess to bring me cognac twice during dinner but they didn't bring it!

The food and service was great. You have to pay a lot for in flight Internet though which is lame.

Flight was delayed at the last minute for six hours. Instead of delaying it to a normal hour, they moved it to 10 pm to essentially make it a redeye. There was no compensation or benefit offered for this inconvenience. Once on the plane, Inpaid for WiFi twice with both times it not working because of a “weak WiFi signal”, according to the flight attendants. They also chose the farther possible gates in both airports from the entrance/exit, even though they were one of the few active flights left so late in the evening. Overall it was pretty horrible.

Special request meals are really below average. Vegetarian options are very limited if you didn't prebook.

I've stomach problems after 2 hours of flight, Iris, the flight purser not only did her best to make me feel comfortable, she went above and beyond providing pain relievers medicines and ointment. She look and found a doctor passenger on the flight to provide advise. She even report on ground staffs about my condition and provide wheelchair upon arrival. Kudos to her and Cathay Pacific!

Worst experience I have ever had with any airline in over 25 years.

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