Air Busan Busan-Chiang Mai flights return November 11

Air Busan plans to return to the direct Busan-Chiang Mai route on November 11, 2026. The airline's current schedule shows four flights a week at first, then six a week during the busiest part of winter.

The evening flight reaches Chiang Mai at 22:40 local time. That makes baggage, Thailand entry forms and late-night transport as important as the fare. The service has not started yet, so check the issued itinerary before paying for an inflexible hotel, tour or onward ticket.

*Original AI-generated editorial illustration created for OpenSim. It is not a photograph of an Air Busan aircraft, Gimhae International Airport or Chiang Mai International Airport.*

The practical answer: Air Busan's PUS-CNX service is scheduled to begin on November 11 with flights on Wednesday, Thursday, Saturday and Sunday. The outbound is listed at 19:00 to 22:40, while the return leaves at 23:40 and reaches Busan at 07:00 the next day. Frequency is due to rise to six weekly flights from December 22 through February 28.

This guide was checked on October 1, 2026. All times below are local.

Air Busan's PUS-CNX schedule

Air Busan's official route promotion gives this timetable:

• Busan to Chiang Mai: Depart PUS at 19:00 and arrive at CNX at 22:40 on Wednesday, Thursday, Saturday and Sunday.
• Chiang Mai to Busan: Depart CNX at 23:40 and arrive at PUS at 07:00 the next day on Wednesday, Thursday, Saturday and Sunday.

The airline says it will increase the route from four to six flights a week between December 22, 2026 and February 28, 2027. The winter pattern is Tuesday through Sunday, with no Monday flight.

Package inventory identifies the services as BX537 outbound and BX538 inbound. Still, use the flight number, date and time on Air Busan's booking confirmation as the authority. The route is future service, and an announcement or third-party schedule is not proof that a particular flight has operated.

This is a return to a route Air Busan has served before, not Busan's first direct Chiang Mai option. Eastar Jet also appears in current nonstop route listings, so compare the exact days and final fare rather than assuming one airline controls the market.

The late arrival changes the first-night plan

A 22:40 scheduled arrival means the hotel should know you are coming late. Immigration, baggage delivery and the ride into town happen after the time shown on the ticket, so a same-evening activity is unrealistic.

Choose accommodation with confirmed late check-in, save its address in English and Thai, and keep a screenshot of the reservation. Use an official airport transport desk or the pickup instructions shown in a ride-hailing app. Do not depend on a last public-transport departure without checking the current airport information for the travel date.

If another flight is delayed, the last practical transfer option can change quickly. Keep enough payment flexibility for a taxi and a working data connection for messages, maps and the driver pickup point.

Check the fare before assuming a bag is included

Air Busan's current baggage page allows one cabin bag up to 10 kg. Its three dimensions must total no more than 115 cm, with maximum sides of 40 x 20 x 55 cm. The airline also permits one small handbag or laptop bag within its stated size limit.

Checked baggage depends on the ticket type. Air Busan lists no free checked bag for international promotion and super-special tickets. Eligible economy or regular tickets on non-Americas international routes include 15 kg, while the published infant allowance is 10 kg.

The fare name on a package, agency page or search result may not map neatly to the airline's English labels. Open the baggage line in the actual reservation before paying. If it says zero, compare the cost of prepaid baggage with the next fare rather than waiting for the airport.

Gimhae check-in has a firm cutoff

Air Busan recommends arriving two hours before an international departure from Busan. Its international counter at Gimhae is on the second floor of the International Terminal, Section D. The published counter window normally starts three hours before departure and closes 50 minutes before departure.

That creates a useful distinction: arriving earlier does not mean the airline counter will already be open, while arriving at the cutoff is too late for a comfortable trip. Aim for the airline's two-hour recommendation and add time for a holiday weekend, document questions, checked bags, children or mobility support.

Air Busan offers web and mobile check-in for eligible Korea-origin international journeys, generally from two days until 90 minutes before departure. Route, nationality and document restrictions can block it. A mobile boarding pass also does not remove the need to visit bag drop or complete an in-person document check.

Thailand requires a digital arrival card

Non-Thai nationals must complete the Thailand Digital Arrival Card, or TDAC, before arrival. The official TDAC FAQ says the form can be submitted within three days before arrival, counting the arrival date.

Use the official immigration website, not a paid lookalike. Save the confirmation on the phone and keep the hotel address handy when completing the form.

TDAC is an arrival form, not a visa. Entry permission still depends on the traveler's passport, trip length and purpose. Check a Thai embassy or consulate source for the specific passport rather than relying on an older forum answer or assuming Korean rules apply to everyone on the flight.

Allow more time for self-transfers

A ticket from another airline, train or bus company is not automatically protected by Air Busan. On separate bookings, expect to collect bags, pass the required border and customs steps, move to the next departure point and check in again.

The overnight CNX-PUS flight reaches Busan at 07:00 the next day. Do not book a tight domestic flight or train based only on the scheduled landing time. Immigration queues and baggage delivery are variable, and a self-transfer provider may treat a missed departure as the passenger's problem.

If the onward connection matters, buy it on the same protected itinerary where possible. Otherwise, choose a flexible fare and leave a buffer you would still accept after a delay.

Mobile data for Busan and Chiang Mai

An OpenSim Thailand eSIM suits a trip that only needs mobile data after arrival in Thailand. An OpenSim South Korea eSIM can cover the Busan side, while the Asia 12 areas eSIM is the route-matched option to compare when one itinerary needs coverage in both South Korea and Thailand.

Check the live product card for included locations, data allowance, validity, network generation, speed conditions and top-up eligibility. Not every plan is reloadable. Install the selected eSIM on reliable Wi-Fi before travel, but activate it according to the package instructions.

Mobile data helps with airline messages, TDAC confirmation, maps, late hotel contact and a ride pickup. It does not include inflight Wi-Fi, change an app's service area, replace entry documents or protect a missed connection.

Ten questions about Air Busan Busan-Chiang Mai flights

When do Air Busan Busan-Chiang Mai flights start?

The planned start date is November 11, 2026. Because that date is still in the future, recheck the reservation and operating status before travel.

Which days will Air Busan fly between Busan and Chiang Mai?

The initial schedule is Wednesday, Thursday, Saturday and Sunday. Air Busan plans six flights a week, Tuesday through Sunday, from December 22, 2026 through February 28, 2027.

What are the PUS-CNX flight times?

The published outbound time is 19:00 from Busan with arrival in Chiang Mai at 22:40. The return leaves Chiang Mai at 23:40 and reaches Busan at 07:00 the following day. All times are local.

Are BX537 and BX538 the flight numbers?

Current package inventory uses BX537 from Busan and BX538 from Chiang Mai. Confirm those numbers on the airline-issued itinerary because future schedules can change.

Is Air Busan the only nonstop airline on this route?

No. Current route listings also show Eastar Jet on PUS-CNX. Compare the exact dates, baggage and final checkout total for each airline.

Does an Air Busan ticket include checked baggage?

It depends on the fare. Promotion and super-special international tickets have no free checked bag, while eligible regular non-Americas international fares include 15 kg. Read the allowance in the reservation.

How early should I reach Gimhae Airport?

Air Busan recommends two hours before an international departure from Busan. Its published international check-in cutoff is 50 minutes before departure, so do not treat that deadline as an arrival target.

Can I check in online for the Chiang Mai flight?

Possibly. Eligible Korea-origin international passengers can use web or mobile check-in, but route, nationality and document restrictions apply. Checked baggage or a document check may still require the counter.

Do I need a TDAC and a Thai visa?

TDAC is required for non-Thai arrivals and is separate from visa permission. Whether a visa is needed depends on the passenger's passport, trip length and purpose, so verify both requirements separately.

How should I plan transport after the 22:40 arrival?

Confirm late hotel check-in and review the airport's current transport options before departure. Keep the hotel address offline and enough payment flexibility for an official taxi or an app-booked ride after immigration and baggage collection.

Booking checklist

• Confirm that the exact date shows a nonstop PUS-CNX flight.
• Read the operating day, local times and flight number on the issued itinerary.
• Check whether the selected fare includes a checked bag.
• Reach Gimhae in time for the 50-minute international check-in cutoff.
• Complete TDAC only within the official submission window.
• Verify passport-specific Thai visa or exemption rules separately.
• Tell the Chiang Mai hotel about the late arrival.
• Leave a wide margin for a separately booked onward journey.
• Save the itinerary, TDAC confirmation and hotel address offline.
• Recheck the flight status before leaving for the airport.

Evidence checked and update watch

Air Busan's official channel and live website support the planned start, operating days, local timetable and winter frequency increase. The airline's baggage, airport-procedure and mobile-check-in pages support the allowance, counter and timing guidance. Thailand Immigration supports the TDAC requirement and submission window.

Public traveler discussions were used to identify questions about Gimhae timing, baggage, transfers, late Chiang Mai arrivals and the difference between TDAC and visa permission. They were not used as evidence for airline or immigration rules.

We will update this page if Air Busan changes the launch date, timetable, operating days, flight numbers, baggage, check-in rules or route status, or if Thailand changes TDAC or entry requirements.

*Airline, airport, entry and OpenSim catalog details were reviewed on October 1, 2026.*