ORD - CNX

$448 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 2/5. 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

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

Wed, Nov 5 - Sun, Nov 16
Cathay Pacific Logo
2:40 pm - 6:50 pmORD-CNX
39h 10m1 stop
Cathay Pacific Logo
10:35 am - 1:00 pmCNX-ORD
39h 25m1 stop
$684Cathay Pacific
Find Deal
Sun, Nov 30 - Tue, Dec 23
Cathay Pacific Logo
2:40 pm - 6:50 pmORD-CNX
39h 10m1 stop
Cathay Pacific Logo
7:40 pm - 1:00 pmCNX-ORD
30h 20m1 stop
$734Cathay Pacific
Find Deal
Wed, Feb 18 - Tue, Mar 10
Delta Logo
11:25 am - 10:55 pmORD-CNX
22h 30m1 stop
Delta Logo
12:15 am - 11:44 pmCNX-ORD
35h 29m2 stops
$855Delta
Find Deal
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
$860Delta
Find Deal
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
$899EVA Air
Find Deal
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
$902EVA Air
Find Deal
Tue, Oct 28 - Tue, Nov 4
 Logo
5:35 pm - 11:20 amORD-CNX
29h 45m2 stops
 Logo
7:45 pm - 1:50 pmCNX-ORD
31h 05m2 stops
Tue, Feb 10 - Fri, Feb 20
Korean Air Logo
11:25 am - 10:55 pmORD-CNX
22h 30m1 stop
Korean Air Logo
12:15 am - 8:40 amCNX-ORD
21h 25m1 stop
$924Korean Air
Find Deal
Wed, Nov 5 - Sun, Nov 16
 Logo
2:40 pm - 6:50 pmORD-CNX
39h 10m1 stop
 Logo
10:10 am - 1:00 pmCNX-ORD
39h 50m2 stops
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
$964Korean Air
Find Deal

Everything you should know

Top airlines
Cathay Pacific
Cheapest • from $684 (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
$684
Typical prices: $1,059-1205
Cathay Pacific
Wed 11/5Sun 11/16
ORD - CNX • 1 stop
Cheapest one-way
$448
Typical prices: $574-765
Multiple Airlines
Thu 2/5
ORD - CNX • 2 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 $975 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $1,808 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$448
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 8% 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 $448 for a one-way ticket and $684 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?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Chicago O'Hare Airport and Chiang Mai, with SkyTeam 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 $1,444 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 $1,296 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 1236 reviews
8.6Crew
8.3Comfort
8.0Entertainment
8.4Boarding
8.1Food
Airline reviews

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

10.0 ExcellentDale, Aug 2025SFO - TPE
Read more EVA Air reviews

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.

Good. Please add a non- applicable category to your questions.

The app was awful. No accurate info. Paying for internet is a negative (Delta is free). The crew was very nice for the most part although you are not guaranteed to get good service. Some crew would ignore requests for things as simple as a cup of water if you were sleeping when the first serving was made. Food was great. Male crew member was exceptionally kind and responsive.

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.

Great except for the delay in Korea. Korean Air did a great job setting up a hotel for the night. I also needed assistance with a wheelchair and they were outstanding.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

The food was terrible especially for a 15 hour international flight. The crew was unpleasant as well.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Quick check in. Everything went smooth. I don't know what can be done about airline food.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Nothing special. The crew never went out of their way for anything.

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

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.

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.

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!

I have a Peanut Allergy and the Steward staff were very accommodating in ensuring my safety as my allergy is life threatening. Very professional and so vested in their profession.

Crew was great. But a bit understaffed. The business class seat, etc were dated. But comfortable. Some legs had entertainment system from a decade ago. Selections were rather poor. Food was mediocre at best. Actually poor for business class standards. I liked the lounge in Hong Kong. Showers were great. Food was nice.

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

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

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

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