$594 Find Cheap Flights from Bangkok to Illinois - 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 Bangkok to Illinois departing on 7/8. 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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Cheap Flights from Bangkok to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicago3 stops$886
Peoria
Peoria3 stops$1,288
St. Louis
St. Louis2 stops$1,096
Chicago
Chicago3 stops$886
Peoria
Peoria3 stops$1,288
St. Louis
St. Louis2 stops$1,096

Book Cheap Bangkok to Illinois Plane Tickets

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

Tue, Oct 20 - Tue, Nov 3
United Airlines Logo
3:45 pm - 8:22 pm
BKK
-
ORD
40h 37m
3 stops
United Airlines Logo
9:40 pm - 11:30 am
ORD
-
BKK
48h 50m
2 stops
$886United Airlines
Fri, Sep 4 - Fri, Sep 25
Oman Air Logo
9:00 am - 6:50 am
BKK
-
ORD
33h 50m
2 stops
Oman Air Logo
8:00 pm - 5:45 pm
ORD
-
BKK
33h 45m
2 stops
$933Oman Air
Sat, Oct 10 - Fri, Oct 23
Oman Air Logo
9:00 am - 4:10 pm
BKK
-
ORD
43h 10m
2 stops
Oman Air Logo
8:00 pm - 7:55 pm
ORD
-
BKK
35h 55m
2 stops
$934Oman Air
Fri, Oct 16 - Wed, Oct 28
Oman Air Logo
7:10 pm - 4:10 pm
BKK
-
ORD
57h 00m
2 stops
Oman Air Logo
6:50 pm - 6:45 am
ORD
-
BKK
47h 55m
2 stops
$940Oman Air
Wed, Oct 14 - Mon, Oct 26
Air Canada Logo
2:35 am - 8:06 pm
BKK
-
ORD
29h 31m
2 stops
Air Canada Logo
8:49 am - 5:30 am
ORD
-
BKK
32h 41m
1 stop
$958Air Canada
Wed, Oct 21 - Tue, Nov 17
Air Canada Logo
7:05 am - 8:06 pm
BKK
-
ORD
25h 01m
1 stop
Air Canada Logo
8:45 am - 12:45 am
ORD
-
BKK
27h 00m
2 stops
$977Air Canada
Wed, Oct 21 - Tue, Nov 3
Korean Air Logo
9:40 pm - 9:30 am
BKK
-
ORD
23h 50m
1 stop
Korean Air Logo
11:15 am - 1:25 pm
ORD
-
BKK
37h 10m
1 stop
$1,003Korean Air
Wed, Oct 21 - Tue, Nov 3
Delta Logo
11:30 pm - 12:48 pm
BKK
-
MDW
25h 18m
2 stops
Delta Logo
5:15 pm - 1:25 pm
MDW
-
BKK
31h 10m
2 stops
$1,016Delta
Tue, Oct 20 - Tue, Nov 3
Delta Logo
11:30 pm - 12:48 pm
BKK
-
MDW
25h 18m
2 stops
Delta Logo
5:15 pm - 1:25 pm
MDW
-
BKK
31h 10m
2 stops
$1,021Delta
Fri, Sep 25 - Tue, Sep 29
United Airlines Logo
3:45 pm - 10:06 am
BKK
-
PIA
30h 21m
3 stops
United Airlines Logo
4:05 pm - 9:35 am
PIA
-
BKK
29h 30m
3 stops
$1,288United Airlines
Booking Insights

KAYAK's insights & trends for Bangkok to Illinois flights

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

How much is a round-trip flight from Bangkok Suvarnabhumi Airport to Illinois?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Bangkok Suvarnabhumi Airport to Illinois departing in October.

What is the cheapest month to fly from Bangkok Suvarnabhumi Airport to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Bangkok Suvarnabhumi Airport to Illinois, 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 Bangkok Suvarnabhumi Airport to Illinois is February, when tickets cost $372 (return) on average. On the other hand, the most expensive months are April and May, when the average cost of round-trip tickets is $980 and $975 respectively.

How far in advance should I book a flight from Bangkok Suvarnabhumi Airport to Illinois?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Bangkok Suvarnabhumi Airport to Illinois, 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 Bangkok Suvarnabhumi Airport to Illinois, you should book around 2 weeks before departure, which saves you about 48% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonOctober
Cheapest flight$594
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from Bangkok to St. Louis

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Bangkok to Illinois?

    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 Bangkok to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Bangkok to Illinois 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 Bangkok to Illinois?

    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 Bangkok to Illinois 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 Bangkok to Illinois?

    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 Bangkok to Illinois 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 Bangkok to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Bangkok to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Bangkok to Illinois? 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 1484 reviews
8.4Boarding
8.3Comfort
8.0Entertainment
8.7Crew
8.1Food
Airline reviews

Service in BKK was very good at answering our question about our canceled flight from Taipei to San Francisco. Did like the lead time about the canceled flight from Taipei to San Francisco and was not given the best options.

8.0 ExcellentAnonymous, Sep 2025
BKK - TPE
Read more EVA Air reviews

Service in BKK was very good at answering our question about our canceled flight from Taipei to San Francisco. Did like the lead time about the canceled flight from Taipei to San Francisco and was not given the best options.

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.

Clean plane, friendly crew, mostly on-time departure. Negativo since there were no snacks offered. Cold drinks only was fine due to turbulence, but nothing to eat? Really?

Except for crying babies all was ok although the movie selection wasn't the best.

Poor food on board, but seats are too small and uncomfortable

1. The entrance to boarding gate G5 (which is at a lower level) is from the walkway (which is at the upper level). That entrance was locked and there was no place for hundreds of people to sit at the upper level, for a long time as the flight was 45 minutes late. 2. The choice of movies on board was extermely limited and poor. 3. The staff was unhelpful and faked politeness.

They didn’t have ice for the drinks and only gave you half a cup of your beverage. Did not have enough water. I got dehydrated

Fast boarding process. Flight was expected for a long haul economy flight

The flight went well. Everything good. Boarding. Meal service. Snack (crackers) & Drinks. Entertainment was good as I watch 4 movies. The need to have milk for hot black tea though as coffee creamer just never makes tea taste nice.

Everything was fantastic! The crew really went above and beyond to make it a great flight. I felt cared for with EVA.

Overall, it was ok. The attendants are nice. It was a short flight, and I did not use the restrooms. What I was frustrated was the check-in. I was to fly from ATL to Chicago (American) then change to Japan Airline to go to Japan. I checked in, but I only got a boarding pass for the flight from Atlanta to Chicago. It said I would need to check in for a flight to Japan on Japan Airline site. When I tried to check in on JAL website, it said I need to check in American... It was very confusing.

My ONLY complaint with Japan Airlines is their in-floght movie options. The choices were very limited and skewed towards lesser movies that are pretty much unknown. On a 13 hour flight I'm dependent on there being a solid list of decent films to pick from. The poor choices made the flight seem twice as long. Next time I'll bring a fully loaded iPad for my movies.

service was excellent. crew very polite, courteous, and good service especially to passengers like me who is a wheelchair passenger

The flights were on time and the cabin crew were very nice. The only downside was that the food was not good

Very comfortab flight. The flight crew and service was terrific. The food was average at best.

Extremely poor at handling baggage. I had oversized golf bag and JAL would not recheck in Boston. Had to haul by myself to Jet Blue. Both JAL and Jet Blue claimed I had overweight bag. Had to adjust baggage several times. Will avoid JAL in future and I always avoid Jet Blue when I can. QATAR always superior.

The flight was pretty much as expected. Have spent a lot of time flying back and forth from Asia to the US. So it was normal, as usual, most Asian airlines do not have good food, of course, most airlines don't have very good food something to do with 30,000 feet in the air. The seats were a little cramped but that's kind of normal for economy class. Their notification of where to pick up baggage was really screwy. I had to run all over Harry Reid Airport in Vegas to find my baggage. A little better communication about that Would have been much nicer.

The flight attendant were great. But the plane felt old and incredibly outdated. The seat in business class was old and not much padding left. The walls were filthy from years of use.

The food was not that good. I liked the miso, green tea, and ice cream. I wasn’t able to put my carry on bag under the seat in front of me. The flight was smooth. Please expand your choices of movies especially the new ones. I can’t choose any of those films. They’re old.

Good and movies are so old. Needs to have more up-to-date movies.

Attendants were very kind and frequently offered water and snacks. Food was excellent. For some reason, my IFE system would not play dialogue for any media despite my efforts to change to different language voiceovers, restart the system, etc. so I could not watch any videos.

Crew was fantastic. Seats were not completely lay flat but still comfortable to watch a show. International food was lobster which was very big but a little tough. The scallop appetizer was delicious. Loved the individual air conditioning vent at each seat. Flight overall was very smooth and very good.

Overall good except the checkin process at Bangkok airport. Can ANA explain why the line for business class is longer than that for economy? I, BC passenger, had to move from BC line to economy line to get faster service.

I didn’t know that my connecting flight from Japan to Hawaii was at a different airport - arrived in Haneda (ticket said Tokyo but didn’t notice the airport name) and had to get my bags and go out of immigration and back in to go to Narita airport 2 hours away. Such a hassle and SOOO confusing and complicated. Check your airports IN ADVANCE and NEVER book if you have to change airports. 40+ years of flying and first time had this. Never again. ANA is great but booking agencies will sell you a connection that you have a good chance of missing - even under the best circumstances.

I always take ANA because of the great service and overall experience.

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.

Ticket was purchased as a United Airlines flight (operated by All Nippon) like what does that even mean? Makes for a VERY confusing flight experience. For instance, what do I look for a United drop off signage and ticket counter or ANA? No explanation anywhere to be found. I also felt a little bit scammed by the obsurdely restrictive seat selection provided. Only middle seats available!! Are you kidding me!! On 6hr + 10hr flights you're forcing me into the middle seat without telling me before I purchased the ticket?? This should be illegal. And to top it off, on the Tokyo LA leg there were quite a few empty seats including window seats! I must also say, the food was a dissappointing as well for my taste, fish with rice ( mostly plain white rice) or a vegetable medly for the breakfast meal? Should be at least 4 choices and at least 1 with eggs. Outside of these issues flight was otherwise ok.

This is a very long flight and the first time I have flown on a Japanese airline. I was very impressed with the staff. They worked hard and offered food and drink regularly. Plane was very well cared for. The let room was good . Food was ok but better than other airlines.

I love everything about this airline but it could be better if the waiting time for boarding is on time.

Great airline and staff. Thanks for comfortable, safe trip home. My best wishes to all United staff. Stay safe.

HAVING ANNOUNCEMENTS FOR PEOPLE TO BOARD ACCORDING TO GROUP IS ESSENTIAL N ENSURING N CUTTING OF QUEUES, EXCEPT FOR PRIORITY CLASS PASSENGERS ON A SEPARATE Q

We still get drinks and a snack. Love the gift bags too.

business class is old but still done very well by the team.

Good experience although the boarding gate is at the terminal extension hence need to leave lounge to head over earlier.

Thai Royal First is very good. Easy check in , Private room in the first class lounge and escort from ticketing to the plane. Once on board crew was very polite, food was outstanding, and the ride was smooth as silk. Restrooms were especially clean. Great Experience

Need to improve on punctuality. My flight was delayed by 1 hour.

Seats were uncomfortable and the vegetarian meal was awful. Some of the entertainment didn't work.

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.

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 flight was delayed an hour and a half while you tried to fix the plane so I missed my connecting flight in Chicago. In Chicago, it took an hour to get the luggage. Then the conveyor belt was broken where I have to transfer my flight from an international flight to the continuing flight so I had to carry a large suitcase through the airport. The elevators were broken in the airport. I paid people to carry the luggage for me up the escalators in two different areas. The person who helped me get the new flight was outstanding. The temperature in the airport in Chicago was horrible. We were all sweating. It was the day from hell. That was after two hours in a security line in Athens. I have TSA pre-checked and global entry and I still waited. Two hours in a security line. Something has got to be done to stream line this service. After I’ve been through all of that in Athens, why do I have to go through it again in Chicago. It was the worst travel experience I have had in a long time. Your bathrooms have gotten so small that you can hardly get your butt on the toilet. You’ve taken the airspace out of the inside of the top of the toilet. It really makes for a miserable experience. Also on a 4 1/2 hour flight from Chicago to Los Angeles. The only thing we’re given is a bag of pretzels. REALLY!!

Definately tried to book business class, didn't realize until way later I didn't get it.

1 flight cancelled Had to fly out of different city Flight at new departure city was delayed 3 hours causing us to miss connecting flights. By the time we did make it to Prague our luggage did not. Had to wait day and a half for luggage to be delivered. Customer service was not good. Agents did not arrive at gate until 5-10 minutes before boarding

Awful. Delayed flights, missed connection to Toronto. Hotel vouchers were for already booked hotels x3. Giant waste of my time

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

Very easy ! Use the kiosk and bag drop and right to security within 10 min

Prefer not to have an almost 3 hour delay with useless communication that wasn't accurate.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

Absolutely terrible. I booked my ticket with ANA and underpricer/kayak asked me to change all my return flights to United. Customer service does not exist with United. Flight attendants are rude, self-centered, and unhelpful. The food is served cold and uncovered. The in-flight video controllers do not work properly. Premier economy tickets with ANA, allow you access to all airport lounges, while United does not allow access to any lounge. Mockery of an airline.

A great experience with excellent service by the crew and attention in assisting the passengers.

Everything you need to know for your flight from Bangkok to Illinois

Information on your arrival and departure airports