Cheap Thai Airways International flights Ubon Ratchathani (UBP) to Chiang Rai (CEI)

Landing cheap one-way Thai Airways International flights from UBP to CEI on Expedia is a cinch — just filter by “Price (lowest to highest).” Or check out our budget-friendly round-trip fares for your next 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.

August is one of the cheapest months to jet away to Chiang Rai with Thai Airways International. You could also find fantastic deals on one-way and return fares in May.

Search for affordable Thai Airways International flights from Ubon Ratchathani Intl. Airport (UBP) to Chiang Rai Intl. Airport (CEI) one to three months before your departure day. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and journey, the best day of the week to book a domestic flight is generally Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**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.

Fill in your dates, hit search and tick the “Nonstop” filter on Expedia to browse any direct flights from UBP to CEI with Thai Airways International or other airlines.

To find the earliest departure from UBP to CEI with Thai Airways International, filter your results by “Morning” and “Early Morning.” Choosing an early flight usually means cancellations are less likely.**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 Ubon Ratchathani Intl. Airport (UBP).

Travel from UBP to CEI with Thai Airways International and you can look forward to a range of perks starting with top-tier customer service. When booking through Expedia as a Thai Royal Orchid Plus and One Key™ member, you could also earn OneKeyCash™* to use on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your ticket type, a fee may apply if you change or cancel your booking more than 24 hours after confirmation. To find flexible fares, select our “No cancel fee” or “Changes included” filter when looking for flights. For additional information on modifying or canceling your reservation, go to “Trips,” select your flight and tick “Manage Booking.”