$452 Find Cheap Flights from Chicago to Thailand - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Thailand departing on 8/31. 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.
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1 adult, Economy, 0 bags

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Cheap Flights from Chicago to Thailand

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Bangkok
Bangkok1 stop$1,001
Phuket City
Phuket City1 stop$873
Chiang Mai
Chiang Mai1 stop$864
Ko Samui
Ko Samui2 stops$1,074
Krabi
Krabi2 stops$994
Chiang Rai
Chiang Rai2 stops$844
Udon Thani
Udon Thani2 stops$1,024
Bangkok
Bangkok1 stop$1,001
Phuket City
Phuket City1 stop$873
Chiang Mai
Chiang Mai1 stop$864
Ko Samui
Ko Samui2 stops$1,074
Krabi
Krabi2 stops$994
Chiang Rai
Chiang Rai2 stops$844
Udon Thani
Udon Thani2 stops$1,024

Book Cheap Chicago to Thailand Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to Thailand 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 Chicago to Thailand

Wed, Aug 19 - Wed, Aug 26
Multiple Airlines Logo
5:45 pm - 1:10 pm
ORD
-
CEI
31h 25m
2 stops
Multiple Airlines Logo
6:55 pm - 8:40 am
CEI
-
ORD
25h 45m
2 stops
$844Multiple Airlines
Sun, Oct 11 - Wed, Oct 21
Cathay Pacific Logo
4:15 pm - 9:45 am
ORD
-
CNX
29h 30m
1 stop
Cathay Pacific Logo
7:25 pm - 1:55 pm
CNX
-
ORD
30h 30m
1 stop
$864Cathay Pacific
Sun, Oct 4 - Mon, Oct 12
Cathay Pacific Logo
4:15 pm - 10:50 am
ORD
-
HKT
30h 35m
1 stop
Cathay Pacific Logo
6:20 pm - 1:55 pm
HKT
-
ORD
31h 35m
1 stop
$873Cathay Pacific
Sun, Oct 4 - Mon, Oct 12
Cathay Pacific Logo
4:15 pm - 10:50 am
ORD
-
HKT
30h 35m
1 stop
Cathay Pacific Logo
6:20 pm - 1:55 pm
HKT
-
ORD
31h 35m
1 stop
$877Cathay Pacific
Mon, Nov 2 - Sun, Nov 15
Cathay Pacific Logo
2:35 pm - 5:35 pm
ORD
-
HKT
38h 00m
1 stop
Cathay Pacific Logo
12:20 pm - 12:55 pm
HKT
-
ORD
37h 35m
1 stop
$879Cathay Pacific
Mon, Oct 26 - Mon, Nov 9
Korean Air Logo
12:15 pm - 10:55 pm
ORD
-
CNX
22h 40m
1 stop
Korean Air Logo
12:15 am - 8:30 am
CNX
-
ORD
21h 15m
1 stop
$910Korean Air
Mon, Oct 26 - Wed, Nov 11
Delta Logo
7:10 am - 10:55 pm
ORD
-
CNX
27h 45m
2 stops
Delta Logo
12:15 am - 9:53 pm
CNX
-
ORD
34h 38m
2 stops
$921Delta
Tue, Nov 3 - Sat, Nov 14
Delta Logo
11:15 am - 1:25 pm
ORD
-
BKK
37h 10m
1 stop
Delta Logo
11:15 pm - 5:14 pm
BKK
-
ORD
30h 59m
2 stops
$1,001Delta
Wed, Oct 21 - Fri, Dec 25
ANA Logo
11:50 am - 11:55 pm
ORD
-
BKK
24h 05m
1 stop
ANA Logo
4:55 pm - 5:47 am
BKK
-
ORD
25h 52m
2 stops
$1,014ANA
Tue, Nov 24 - Tue, Dec 8
EVA Air Logo
11:30 pm - 5:00 pm
ORD
-
USM
28h 30m
2 stops
EVA Air Logo
7:00 am - 7:35 pm
USM
-
ORD
25h 35m
2 stops
$1,217EVA Air
Booking Insights

KAYAK's insights & trends for Chicago to Thailand flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to Thailand, 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 from Chicago O'Hare Intl Airport to Thailand is September, when tickets cost $569 (return) on average. On the other hand, the most expensive months are December and April, when the average cost of round-trip tickets is $2,031 and $1,917 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago O'Hare Intl Airport to Thailand, 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 on the flight from Chicago O'Hare Intl Airport to Thailand, you should book around 6 weeks before departure, which saves you about 7% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonJuly
Cheapest flight$452
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Chicago O'Hare Airport to Chiang Mai

FAQs - booking Thailand flights

  • How does KAYAK find such low prices on flights from Chicago to Thailand?

    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 from Chicago to Thailand.

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

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

  • What is the Hacker Fare option on flights from Chicago to Thailand?

    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 from Chicago to Thailand 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 from Chicago to Thailand?

    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 from Chicago to Thailand up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Chicago to Thailand

 
Need help choosing which airline to fly with from Chicago to Thailand? 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.
8.5
EVA AirOverall score based on 1489 reviews
8.3Comfort
8.0Entertainment
8.4Boarding
8.7Crew
8.1Food
Airline reviews

I put the review all together for the first review

6.0 GoodRichard, Apr 2026
TPE - BKK
Read more EVA Air reviews

I put the review all together for the first review

I liked that they gave us a couple of meals and drinks but the meal was not good and not many options especially if we are seated in the back of the plane.

Again on this leg the WiFi wouldn't work. The seats were comfortable with adequate cushion and space between seats for my legs. Very nice 3-hour flight.

Very nice, I feel I got good value for the price.

Certain flight crew member were rude and short with me when I asked questions.

Everything was great, however the seats in the back are very small. Not as Comfortable as I would have liked.

I appreciate the email reminders for online check-in which made my entry to the lines less stressful. The flight was on schedule and on time. The baording staff were proactively helpful and approachable. The airplane inflight food, entertainment and comfies as well as provisions are excellent even in the economy seating. The airline transfer was smooth and easy! Luggage safe and intact! Thank you EVA airline for making my trip a reliable safe and comfortable experience.

Excellent food. Good service. Crammed Premium Economy seats. I Asked to change seats during check in. They told me the flight was fully booked. But on board I saw empty seats where I could have been easily relocated.

On time service. Seat comfort and the crew service very good .

Eva air is a good airline. The seats on the way to Taipei could have certainly been more comfortable, but all in all it was a pretty good experience.

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

Lousy entertainment system. Crews are excellent. Meal is just mediocre.

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

They did an excellent job helping me with a wheelchair. I couldn’t have asked for any better help.

Unlimited drinks and snacks on this long flight. Very courteous Korean staff !!!

It was a great experience in all aspects including passengers are respectful to each other. I will consider to fly with Korean Air again in the future.

Excellent service, love the extra amenities (water bottles, blankets, etc.).

They had the same movie choice as my previous flight, not much of a choice, movies were not up to date, music was uninteresting. Other than sitting on the ground for 40 minutes after boarding the plane, with pilot telling us that they couldn't load the plane because of rain, (bullshit) We finally got into Bangkok of course 40 minutes late.

Great crew, decent food Charging plugs were broken on both seats next to me. Only the USB port was available, and that charges, very, very slowly. Seat was also broken, it would not lock into position when reclining.

After the gauntlet of unnecessary security, and the two mile jog to make the flight, the flight was delayed 20 minutes on the ground for takeoff.. However, once in the air, the crew gave its usual excellent service.

Flight was late boarding. United crew were not friendly and cordial unlike the ANA crew.

Cabin Crew was excellent. They took care of everything requested. Flight was good

The ROOM was great. We would love to have it on all of our flights. LOL

The pilot was kept warning about the weather terrifying us. The flight attendants were not warm or pleasant.

Flight was good and comfortable, even for long haul economy. No complaints.

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.

Everything was good may improve some alcohol drinks and amenities during fly

Wonderfully pleasant experience. Good meal and beverage selections. Professional air staff.

Wonderful. I love ANA airlines. It's the best so far. My first pick when I travel now.

Loved that leg room was great for economy, and food was definitely better than other American airlines, great selection of movies. My mom is happy.

Very easy to use and convenient, you can perform any action within the same portal

Okay considering we had weather delays which the Pilot notified us of immediately!

Everything could have benn better. Short fly, no food, no entertainment and no wifi.

Stop changing gates. Stop cancelling flights Stop moving my seat.

The staff was frielndly. The plane was terrible, it was too small and should be decommissioned. There were no back seat screens at all. The only beverages we had a choice from was coffee, tea or water. The only bathroom in the back was behind the flight attendant's jump seat and wasn't working. And I literally felt like I was sitting on top of the guy next to me. It was terribly hot in the plane and we had to sit on the tarmac in Chicago for 1/2 hour due to congestion in Mpls. Wouldn't they have know that before they even boarded us so that we could have sat in comfort in the terminal?

This was one of the worst flights I’ve been on in years. I upgraded to comfort and had such an uncomfortable experience. The person next to me was oversized - which I understand - however, they took up their space and mine. I could only use about 50% of my seat space to not be physically touching this person the entire flight and there was no spatial awareness. I also could not use the seat outlet because their body was obstructing it. It was very inconvenient. Their body kept touching me repeatedly during the flight and I felt very uncomfortable. To pay more for an upgraded space and then not even being able to use it was highly disappointing.

It was very cold because the air conditioner was on high power, and my son got sick.

Horrible. Flight ORD to CGH was okay, but Paris was a nightmare. Old planes, delays, involuntary downgrades, broken planes, terrible communication. CGH to CPT was my worst flight ever.

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Delta airlines charge $ 30,oo US DOLLARS for the check in for a suitcase in the baggage hold

The service was better on this flight from the long haul one, but still very poor from The Cathay Pacific of the past.

Seat was very old. Didn’t easily go up and down. Flight Attendent had issues moving the seat. Condition of the seat was ok. Parts were peeling off by the foot area. Food was ok. Ran out of the dish I wanted so got the beef. Beef filet was very tender but the sauce was a little strange. Disembarking was very easy.

Good service and food. However, we paid over $400 for aisle seats for my disabled husband and me, and we were given window and middle seats. This was dangerous for our health condition on such a long flight. We needed to stand up and walk around frequently, but we were stuck in our seats. Please give us a refund of our seat payment since you chose not to honor our request.

My connecting flight was canceled or never existed. My stopover went from 1 hour and a half to 10 hours. It was a long day that I wasn't prepared for and it would have been nice to know that ahead of time. Cathay is great though. Great staff, entertainment and food.

Everything was fine and I have no complaints or things to note.

The economy seats are much indeed roomier. Meals needs improvement.

Baggage delayed for 2 days and still chasing for reimbursement of basis items. Very horrible customer care service.

Food was hood for airline food with good poftion and variety in meals. Frequency of beverage service was very low and amount of soda with meals was inadequate.

From Chicago to Hong Kong was great., but from Hong Kong to manila we had hard time looking for the gate of our connecting flight. There wasn’t hardly any sign.

The flight crew was exceptionally good. Personal needs were well met. The food choices were very nice.

Everything you need to know for your flight from Chicago to Thailand

Information on your arrival and departure airports