$544 Cheap Flights from Chicago (ORD) to Chiang Rai (CEI)

View $544 flight on Mon, Sep 1, 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 $544 for one-way flights and $730 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

All Nippon Airways
Wed, Sep 3 - Sun, Sep 7
ORD
Chicago
CEI
Chiang Rai
$730 Roundtrip, found 20 hours ago
$730
Roundtrip
found 20 hours ago
Select All Nippon Airways flight, departing Wed, Sep 3 from Chicago to Chiang Rai, returning Sun, Sep 7, priced at $730 found 20 hours ago
All Nippon Airways
Wed, Sep 3 - Sun, Sep 7
ORD
Chicago
CEI
Chiang Rai
$733 Roundtrip, found 20 hours ago
$733
Roundtrip
found 20 hours ago
Select All Nippon Airways flight, departing Wed, Sep 3 from Chicago to Chiang Rai, returning Sun, Sep 7, priced at $733 found 20 hours ago
All Nippon Airways
Tue, Sep 16 - Sat, Sep 20
ORD
Chicago
CEI
Chiang Rai
$734 Roundtrip, found 19 hours ago
$734
Roundtrip
found 19 hours ago
Select All Nippon Airways flight, departing Tue, Sep 16 from Chicago to Chiang Rai, returning Sat, Sep 20, priced at $734 found 19 hours ago
All Nippon Airways
Thu, Sep 4 - Mon, Sep 8
ORD
Chicago
CEI
Chiang Rai
$737 Roundtrip, found 20 hours ago
$737
Roundtrip
found 20 hours ago
Select All Nippon Airways flight, departing Thu, Sep 4 from Chicago to Chiang Rai, returning Mon, Sep 8, priced at $737 found 20 hours ago
All Nippon Airways
Tue, Sep 2 - Sat, Sep 6
ORD
Chicago
CEI
Chiang Rai
$738 Roundtrip, found 20 hours ago
$738
Roundtrip
found 20 hours ago
Select All Nippon Airways flight, departing Tue, Sep 2 from Chicago to Chiang Rai, returning Sat, Sep 6, priced at $738 found 20 hours ago
All Nippon Airways
Wed, Sep 3 - Sun, Sep 7
ORD
Chicago
CEI
Chiang Rai
$740 Roundtrip, found 20 hours ago
$740
Roundtrip
found 20 hours ago
Select All Nippon Airways flight, departing Wed, Sep 3 from Chicago to Chiang Rai, returning Sun, Sep 7, priced at $740 found 20 hours ago
All Nippon Airways
Thu, Sep 4 - Mon, Sep 8
ORD
Chicago
CEI
Chiang Rai
$741 Roundtrip, found 20 hours ago
$741
Roundtrip
found 20 hours ago
Select All Nippon Airways flight, departing Thu, Sep 4 from Chicago to Chiang Rai, returning Mon, Sep 8, priced at $741 found 20 hours ago
All Nippon Airways
Wed, Sep 3 - Sun, Sep 7
ORD
Chicago
CEI
Chiang Rai
$744 Roundtrip, found 20 hours ago
$744
Roundtrip
found 20 hours ago
Select All Nippon Airways flight, departing Wed, Sep 3 from Chicago to Chiang Rai, returning Sun, Sep 7, priced at $744 found 20 hours ago
All Nippon Airways
Mon, Sep 15 - Fri, Sep 19
ORD
Chicago
CEI
Chiang Rai
$780 Roundtrip, found 19 hours ago
$780
Roundtrip
found 19 hours ago
Select All Nippon Airways flight, departing Mon, Sep 15 from Chicago to Chiang Rai, returning Fri, Sep 19, priced at $780 found 19 hours ago
Lufthansa
Thu, Sep 4 - Mon, Sep 8
ORD
Chicago
CEI
Chiang Rai
$3,847 Roundtrip, found 20 hours ago
$3,847
Roundtrip
found 20 hours ago
Select Lufthansa flight, departing Thu, Sep 4 from Chicago to Chiang Rai, returning Mon, Sep 8, priced at $3,847 found 20 hours ago

Alternative airports near Chiang Rai

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Chiang Rai Intl. CEI. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $1,360
CEI
Chiang Rai Intl.
CheapestClosest
Average driving time to city center11 min
Flights from $1,360
Flights from Chicago (ORD) to Chiang Rai (CEI)
Origin airport
O'Hare Intl.
Destination airport
Chiang Rai Intl.
Airlines serving
Lufthansa
Roundtrip price
$730
Distance
8128 mi

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 September. 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 $544 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.

 

Frequently asked questions

How much does a flight from O'Hare Intl. Airport (ORD) to Chiang Rai Intl. Airport (CEI) cost?
Discover the latest flight deals from ORD to CEI by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ORD to CEI?
The cheapest flights from ORD to CEI are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from ORD to CEI?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ORD to CEI. Sort your results by "Price (lowest to highest)" to snap up a great deal.
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.

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*Available to One Key members.