$253 Cheap Thai Airways International flights Penang (PEN) to Chiang Rai (CEI)

Finding cheap one-way Thai Airways International flights from PEN to CEI from $253 on Expedia is simple — just filter by “Price (lowest to highest).” Alternatively, check out our budget-friendly round-trip fares from $313 for your next exciting getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Look for round-trip or one-way flights to Chiang Rai in August or May. You could find lower fares with Thai Airways International during these off-peak months.

To discover affordable flights from PEN to CEI with Thai Airways International, start searching about one month before your planned departure. You can save 17% when you book your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Another tip? Booking on Sunday offers average savings of 17% compared to Friday (the most expensive day).**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

To find out if there’s a direct journey from PEN to CEI with Thai Airways International or another carrier, check the “Nonstop” filter when searching for flights.

Filter your results by “Morning” and “Early Morning” to browse the earliest flights from PEN to CEI. Taking off early means you’re 20% less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Chiang Rai Intl. Airport (CEI) is the primary Chiang Rai gateway for Thai Airways International flights from Penang Intl. Airport (PEN).

With top-tier customer service, Thai Airways International is a popular choice for many travelers journeying from PEN to CEI. Plus, if you’re a Thai Royal Orchid Plus and One Key™ member booking through Expedia, you can earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on the ticket type you purchased, a fee generally applies if you cancel or reschedule your flight more than 24 hours after it’s confirmed. To secure plane tickets with more flexibility, select our “Changes included” or “No cancel fee” filter when you search for flights. For more information on changing or canceling your reservation, go to “Trips,” select your flight and tick “Manage Booking.”