$634 Cheap Flights from Chicago (ORD) to Chiang Rai (CEI)

View $634 flight on Sun, Nov 9, 2025Opens in a new window

Popular airlines from Chicago O'Hare Intl. Airport (ORD) to Chiang Rai Intl. Airport (CEI)

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Cheap Flights from Chicago to Chiang Rai (ORD-CEI)

Prices were available within the past 7 days and start at $634 for one-way flights and $1,287 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Qatar Airways
Sat, Nov 29 - Wed, Dec 3
ORD
Chicago
CEI
Chiang Rai
$1,287 Roundtrip, found 6 days ago
$1,287
Roundtrip
found 6 days ago
Select Qatar Airways flight, departing Sat, Nov 29 from Chicago to Chiang Rai, returning Wed, Dec 3, priced at $1,287 found 6 days ago
Qatar Airways
Sat, Nov 29 - Wed, Dec 3
ORD
Chicago
CEI
Chiang Rai
$1,291 Roundtrip, found 6 days ago
$1,291
Roundtrip
found 6 days ago
Select Qatar Airways flight, departing Sat, Nov 29 from Chicago to Chiang Rai, returning Wed, Dec 3, priced at $1,291 found 6 days ago
Qatar Airways
Sun, Nov 9 - Thu, Nov 13
ORD
Chicago
CEI
Chiang Rai
$1,320 Roundtrip, found 5 days ago
$1,320
Roundtrip
found 5 days ago
Select Qatar Airways flight, departing Sun, Nov 9 from Chicago to Chiang Rai, returning Thu, Nov 13, priced at $1,320 found 5 days ago
Qatar Airways
Sat, Nov 29 - Wed, Dec 3
ORD
Chicago
CEI
Chiang Rai
$1,354 Roundtrip, found 6 days ago
$1,354
Roundtrip
found 6 days ago
Select Qatar Airways flight, departing Sat, Nov 29 from Chicago to Chiang Rai, returning Wed, Dec 3, priced at $1,354 found 6 days ago
Qatar Airways
Sat, Nov 29 - Wed, Dec 3
ORD
Chicago
CEI
Chiang Rai
$1,358 Roundtrip, found 6 days ago
$1,358
Roundtrip
found 6 days ago
Select Qatar Airways flight, departing Sat, Nov 29 from Chicago to Chiang Rai, returning Wed, Dec 3, priced at $1,358 found 6 days ago
Qatar Airways
Sat, Nov 29 - Wed, Dec 3
ORD
Chicago
CEI
Chiang Rai
$1,360 Roundtrip, found 6 days ago
$1,360
Roundtrip
found 6 days ago
Select Qatar Airways flight, departing Sat, Nov 29 from Chicago to Chiang Rai, returning Wed, Dec 3, priced at $1,360 found 6 days ago
Qatar Airways
Sat, Nov 29 - Wed, Dec 3
ORD
Chicago
CEI
Chiang Rai
$1,362 Roundtrip, found 6 days ago
$1,362
Roundtrip
found 6 days ago
Select Qatar Airways flight, departing Sat, Nov 29 from Chicago to Chiang Rai, returning Wed, Dec 3, priced at $1,362 found 6 days ago
Qatar Airways
Sat, Nov 29 - Wed, Dec 3
ORD
Chicago
CEI
Chiang Rai
$1,364 Roundtrip, found 6 days ago
$1,364
Roundtrip
found 6 days ago
Select Qatar Airways flight, departing Sat, Nov 29 from Chicago to Chiang Rai, returning Wed, Dec 3, priced at $1,364 found 6 days ago
Etihad Airways
Mon, Dec 1 - Fri, Dec 5
ORD
Chicago
CEI
Chiang Rai
$1,532 Roundtrip, found 3 days ago
$1,532
Roundtrip
found 3 days ago
Select Etihad Airways flight, departing Mon, Dec 1 from Chicago to Chiang Rai, returning Fri, Dec 5, priced at $1,532 found 3 days ago
Lufthansa
Tue, Feb 10 - Mon, Feb 23
ORD
Chicago
CEI
Chiang Rai
$3,214 Roundtrip, found 3 days ago
$3,214
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Tue, Feb 10 from Chicago to Chiang Rai, returning Mon, Feb 23, priced at $3,214 found 3 days ago

Frequently asked questions

How much does a flight from O'Hare Intl. Airport (ORD) to Chiang Rai Intl. Airport (CEI) cost?
Lock in a cheap one-way flight from $634 or cheap return flight from $1,287 from O'Hare Intl. Airport (ORD) to Chiang Rai Intl. Airport (CEI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from O'Hare Intl. Airport (ORD) to Chiang Rai Intl. Airport (CEI)?
Planning your trip for November can help you save, as it's the cheapest month for flights between ORD and CEI. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from O'Hare Intl. Airport (ORD) to Chiang Rai Intl. Airport (CEI)?
To find the cheapest airline flying from ORD to CEI, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from O'Hare Intl. Airport (ORD) to Chiang Rai Intl. Airport (CEI)?
You'll need to take a flight with a layover when traveling from O'Hare Intl. Airport (ORD) to Chiang Rai Intl. Airport (CEI). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from ORD to CEI?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from O'Hare Intl. Airport (ORD) to Chiang Rai Intl. Airport (CEI)?
Book a flight from O'Hare Intl. Airport (ORD) to Chiang Rai Intl. Airport (CEI) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from O'Hare Intl. Airport (ORD) to Chiang Rai Intl. Airport (CEI) last-minute?
Last-minute fares from ORD to CEI are usually more expensive. To secure the best prices, start searching for flights as soon as possible. That said, if you're flexible with your travel plans, it's possible to find a cheap fare right before your journey.
Is it cheaper to book an ORD to CEI flight and hotel package?
Securing an ORD to CEI flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our impressive range of accommodations and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from O'Hare Intl. Airport (ORD) to Chiang Rai Intl. Airport (CEI)?
You can usually reschedule or cancel your ORD to CEI flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
O'Hare Intl.
Destination airport
Chiang Rai Intl.
Roundtrip price
$1,287
Distance
8128 mi

Book with confidence

Chicago to Chiang Rai Flights

The cheapest times to fly from Chicago to Chiang Rai

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Chicago to Chiang Rai are during the month of November. You can find some of the cheapest flights from Chicago to Chiang Rai with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Chicago to Chiang Rai

Sunday is one of the best days to book for cheap flights from Chicago to Chiang Rai: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Chicago to Chiang Rai

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Chicago to Chiang Rai in 2025. You can also book with separate airlines for your outbound and return journeys, from $634 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Chicago to Chiang Rai flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Chicago to Chiang Rai airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Chicago to Chiang Rai Flights

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*Available to One Key members.