ORD - CNX

$381 Find Cheap Flights from Chicago O'Hare Airport to Chiang Mai

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from O'Hare Intl to Chiang Mai departing on 11/24. 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, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Chiang Mai

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Chiang Mai, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Chiang Mai, as well as popular online travel agencies
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Flight Deals

Cheap Flights from O'Hare Intl to Chiang Mai (ORD-CNX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from O'Hare Intl to Chiang Mai 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 O'Hare Intl to Chiang Mai

Thu, Mar 5 - Mon, Mar 9
Cathay Pacific Logo
2:35 pm - 6:50 pmORD-CNX
39h 15m1 stop
Cathay Pacific Logo
7:40 pm - 1:55 pmCNX-ORD
30h 15m1 stop
$868Cathay Pacific
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Tue, Jan 20 - Tue, Jan 27
Multiple Airlines Logo
4:25 pm - 11:20 amORD-CNX
29h 55m2 stops
Multiple Airlines Logo
10:10 am - 7:20 amCNX-ORD
34h 10m2 stops
$891Multiple Airlines
Find Deal
Wed, Feb 18 - Tue, Mar 10
Korean Air Logo
11:25 am - 10:55 pmORD-CNX
22h 30m1 stop
Korean Air Logo
12:15 am - 9:40 amCNX-ORD
21h 25m1 stop
$895Korean Air
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Wed, Feb 18 - Wed, Mar 11
EVA Air Logo
11:30 pm - 10:35 amORD-CNX
22h 05m1 stop
EVA Air Logo
11:50 am - 8:35 pmCNX-ORD
20h 45m1 stop
$901EVA Air
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Wed, Feb 18 - Wed, Mar 11
EVA Air Logo
11:30 pm - 10:35 amORD-CNX
22h 05m1 stop
EVA Air Logo
11:50 am - 8:35 pmCNX-ORD
20h 45m1 stop
$904EVA Air
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Thu, Mar 5 - Thu, Apr 30
Multiple Airlines Logo
4:25 pm - 1:45 pmORD-CNX
32h 20m2 stops
Multiple Airlines Logo
11:55 am - 8:40 amCNX-ORD
32h 45m2 stops
$912Multiple Airlines
Find Deal
Wed, Feb 18 - Tue, Mar 10
Korean Air Logo
11:25 am - 10:55 pmORD-CNX
22h 30m1 stop
Korean Air Logo
12:15 am - 9:40 amCNX-ORD
21h 25m1 stop
$914Korean Air
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Wed, Jan 21 - Wed, Feb 4
Cathay Pacific Logo
2:35 pm - 9:50 amORD-CNX
30h 15m1 stop
Cathay Pacific Logo
7:40 pm - 12:55 pmCNX-ORD
30h 15m1 stop
$922Cathay Pacific
Find Deal
Wed, Feb 18 - Tue, Mar 10
Delta Logo
7:10 am - 10:55 pmORD-CNX
26h 45m2 stops
Delta Logo
12:15 am - 9:40 amCNX-ORD
21h 25m1 stop
$946Delta
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Wed, Feb 18 - Tue, Mar 10
Delta Logo
5:50 am - 10:55 pmORD-CNX
28h 05m2 stops
Delta Logo
12:15 am - 11:44 pmCNX-ORD
35h 29m2 stops
$956Delta
Find Deal

Everything you should know

Top airlines
Cathay Pacific
Cheapest • from $868 (round-trip)
EVA Air
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 25% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 26% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$868
Overall average: $1,109
Cathay Pacific
Thu 3/5Mon 3/9
ORD - CNX • 1 stop
Cheapest one-way
$381
Typical prices: $605-$658
Multiple Airlines
Mon 11/24
ORD - CNX • 3 stops
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Chiang Mai!
Booking Insights

KAYAK's insights & trends for O'Hare Intl to Chiang Mai flights

Get data-powered insights and trends into flights from O'Hare Intl to Chiang Mai to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Chicago O'Hare Airport to Chiang Mai?

The average price of all round-trip flights from Chicago O'Hare Intl Airport to Chiang Mai clicked on KAYAK for each day over the last 12 months.

For Chicago O'Hare Airport to Chiang Mai, Tuesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Chiang Mai back to Chicago O'Hare Airport, the best deals are generally found on Sunday, with Monday being the most expensive.

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

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 Chiang Mai, 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 Chiang Mai is February, where tickets cost $976 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $1,817 and $1,750 respectively.

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

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 Chiang Mai, 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 Chiang Mai, you should book around 2 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$381
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from Chicago O'Hare Airport to Chiang Mai

When to book flights from O'Hare Intl to Chiang Mai

Are your dates flexible? Find out the best times to travel from O'Hare Intl to Chiang Mai based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Chicago O'Hare Airport to Chiang Mai flights

  • What is the cheapest flight from Chicago O'Hare Intl Airport to Chiang Mai?

    In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Chiang Mai was $381 for a one-way ticket and $868 for a round-trip.

  • Do I need a passport to fly between Chicago O'Hare Airport and Chiang Mai?

    A passport is required to fly from Chicago O'Hare Airport to Chiang Mai.

  • Which aircraft models fly most regularly from Chicago O'Hare Airport to Chiang Mai?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Chicago O'Hare Airport to Chiang Mai?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Chicago O'Hare Airport and Chiang Mai, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Chicago to Chiang Mai, EVA Air or Korean Air?

    The two airlines most popular with KAYAK users for flights from Chicago to Chiang Mai are EVA Air and Korean Air. With an average price for the route of $1,440 and an overall rating of 8.4, EVA Air is the most popular choice. Korean Air is also a great choice for the route, with an average price of $1,301 and an overall rating of 8.4.

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

    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 O'Hare Airport to Chiang Mai.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chiang Mai from 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 from Chicago O'Hare Airport to Chiang Mai?

    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 Chiang Mai with an airline and back to Chicago O'Hare Airport with another airline. Booking your flights between Chicago O'Hare Airport and CNX can sometimes prove cheaper using this method.

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

    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 Chiang Mai from Chicago O'Hare Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from O'Hare Intl to Chiang Mai

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Chiang Mai. 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 O'Hare Intl to Chiang Mai? 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 1265 reviews
8.3Comfort
8.0Entertainment
8.1Food
8.4Boarding
8.6Crew
Airline reviews

The crew very accommodating and food too is good. Keep up the good work

10.0 ExcellentAnonymous, Oct 2025SFO - TPE
Read more EVA Air reviews

The crew very accommodating and food too is good. Keep up the good work

The crews are very efficient. Other airlines should learn from them when it comes to boarding and departing from the airplane. They also display efficiency in serving meals. They don't keep the aisles blocked for hours like some other airlines. The food is poor. Generally the food was unrecognizable and poorly prepared. The only thing that made it better than US flag carriers is that there was a fresh fruit bowl with each meal.

Very good service and food. Crew was professional and considerate. Cabin and restrooms were kept clean

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.

Great experience, comfort and food is delicious. Always great service and one time

The food from Los Angeles to Taipei made me throw up. The flight is also not comfort. But the staffs are very friendly and nice.

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.

I was sleep when they brought the food. They had put a note on my seat. There was no food when I asked for food later. There was just one main meal served in this 14 hours flight. They offered me sandwich with ham which I don’t eat since I am pescatarian. Long story short I had to wait to get to TPE to get something to eat. I am extremely disappointed from the service. I have been flying EVA since I was 1 year old. Perhaps no more EVA for me. Seems EVA glorious day is long gone

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.

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

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.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

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

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

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Old plane and old configuration/seats but still comfortable for a morning flight

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Leg room wasn't that great. Other than that it was a good flight

Chicken pieces were too big with pasta. Need to be smaller.

Seats in the absolute back row of the plane even though we booked ages ago :( Crew was awesome though

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.

I was only given 2 meals, and my screen showed that there were 3 meals. Second meal was 1-2 hours late according to the screen.

Paid a premium a have a shorter transit time in Hong Kong, but Cathay pacific rebooked me and ended up waiting for 10 hrs in Hong Hong airport.

Cabin crew is very helpful and nice, it is another level of service compared to Air Canada

As before, my only problem was not being able to download my boarding passes prior to arrival at the airport. Everything else was perfect.

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

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!

Everything you need to know for your flight from O'Hare Intl to Chiang Mai

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