Flooding across Bangkok started tearing into ground operations at Suvarnabhumi Airport on September 26 and hadn’t let up by the next morning. Thai Airways ground crews couldn’t physically get to work — roads underwater, the usual commute gone — and a chunk of the airline’s baggage carts went out of service on top of that. Sit with that combination for a second: no runway closed, no mass cancellation wave, no storm bearing down on the terminal itself. Just fewer people able to reach the airport and fewer working machines to move bags once they got there. That’s a supply-chain failure wearing a weather disguise, and it produces a different kind of chaos than a hurricane or a strike does — bags stranded on the tarmac from flights that already landed, passengers staring at an empty carousel with no idea whether their suitcase is still in Bangkok or still on the plane.

Here’s the good news, such as it is: both Suvarnabhumi and Don Mueang stayed open through all of it. This is a ground-handling and access problem, not a runway problem. But “the airport is open” and “your flight leaves on time” are two different sentences, and right now a lot of Bangkok travelers are learning that the hard way. Five airlines have also rolled out flood waivers — details below — but if you’re already standing in the terminal, the cart shortage is the more immediate problem.

Quick Verdict

Factor	Detail
What’s disrupted	Ground handling and baggage operations at Suvarnabhumi, not the runways themselves
Started	Sept 26, continuing into Sept 27, 2026
Cause	City-wide flooding blocked staff commutes; baggage carts went out of service
Airport status	Suvarnabhumi and Don Mueang both remain open
Government response	Transport Ministry stood up a 24-hour flood “war room” covering road, rail, and air
Airlines with waivers	Thai Airways, Thai AirAsia, Nok Air, Thai Lion Air, Thai Vietjet — five separate policies
Widest waiver window	Sept 26–29 (Thai Airways); most others cover Sept 26–28

What Actually Broke at Suvarnabhumi

This wasn’t a single bad morning. Khaosod English reported that an airport inspection traced the disruption to two compounding problems: flooding across several Bangkok districts kept Thai Airways ground-handling staff from reaching the airport at all, and some of the airline’s baggage carts stopped working. Neither issue on its own would be a crisis. Together, they meant fewer people to move bags and fewer working carts to move them with — a bottleneck that shows up as delayed departures and, worse for anyone landing, bags left behind on the tarmac from flights that already came in.

The airport’s response, according to Kaohoon International, was to lean on every lever available: pull in extra ground staff as fast as possible, expedite cart repairs and swap in replacements, post baggage status updates on the arrivals boards, station extra staff at baggage claim to field questions, and open a dedicated delayed-baggage reporting channel through Thai Airways Lost and Found. If your bag didn’t show up, that’s the number to call — not the general help desk.

Don Mueang had its own close call. Water reportedly crept onto part of the southern taxiway, per Nation Thailand’s reporting, though it hasn’t stopped aircraft movements there. Both fields are operating. Just budget more time than usual to get to either one.

Why This Is Bigger Than One Airport

Bangkok isn’t dealing with a localized drainage problem. The city declared all 50 of its districts flood disaster areas on September 26, and rainfall hit 210mm in 24 hours with several canals pushed to critical levels. Schools across the city were closed and workers told to stay home Monday, September 28, as the city works through the backlog — Khaosod English has the district-level detail on which areas are hit hardest.

Thailand’s Transport Ministry didn’t wait for the water to recede before acting. Deputy Prime Minister Phiphat Ratchakitprakarn set up an Emergency Flood Response Operations Centre — the flood war room, running 24 hours — to coordinate road, rail, water, and aviation resources across agencies instead of leaving each one to manage its own patch. Priority zones for road crews include Rangsit, the Don Mueang–Vibhavadi Rangsit corridor, and Srinakarin Road, with pumps, trucks, and lifting equipment deployed to the worst spots. That corridor detail matters if your route to Don Mueang runs anywhere near Vibhavadi Rangsit — plan around it, not through it.

Thailand’s Civil Aviation Authority (CAAT) issued its own advisory telling travelers to check flight status before leaving for the airport, allow extra time, avoid flooded routes, and use rail transit where it’s running. Standard advice, but worth repeating: on a day like this, “leave for the airport on your normal schedule” is the wrong plan.

The Five Airline Waivers, Compared

For travelers not already dealing with a missing bag, the waivers are the more useful piece of this story. Five airlines have them live, and none of the five policies match. Some cover three days, some cover two. Rebooking windows range from a few days to a full month. Read your specific airline’s row — the fine print is where these things actually diverge.

Airline	Travel dates covered	Rebooking window	Fee waived
Thai Airways	Sept 26–29, departing Suvarnabhumi	New travel must complete by Sept 29	Yes — same routing, same fare class
Thai AirAsia	Sept 26–28	One change, new travel within 7 days	Yes, or hold value as AirAsia Credit (2-year validity)
Nok Air	Sept 26 departures, Don Mueang	30 days from original date	Change fee and fare difference both waived
Thai Lion Air	Sept 26–28	One change within a 30-day period	Fee waived; fare difference may apply on holiday dates
Thai Vietjet	Sept 26–28, Suvarnabhumi	One change, new travel within 7 days	Yes, or hold value as Credit Shell (180-day validity)

Thai Airways

Thai Airways’ waiver, first reported by the Bangkok Post, covers tickets for travel out of Suvarnabhumi between September 26 and 29. You get one date change, same routing, same fare class, fee waived — and the rebooked trip has to actually happen by September 29. Miss that window and you’re back under normal ticket rules. This is the broadest date range of the five carriers here, which makes sense given Thai Airways is also the airline whose ground-handling operation took the direct hit from the flooding.

Thai AirAsia

Per Nation Thailand’s rundown, Thai AirAsia passengers booked for September 26–28 travel can make one free change on the same route, with the new flight departing within seven days of the original date, subject to seats being available. If you’d rather not rebook immediately, you can park the ticket’s value in an AirAsia Credit Account instead, good for two years.

Nok Air

Nok Air’s version is narrower and more generous at once: it’s scoped to September 26 departures out of Don Mueang specifically, but the rebooking window stretches a full 30 days, and both the change fee and any fare difference get waived. If your Nok Air flight was leaving Don Mueang on the 26th, this is the most flexible of the five.

Thai Lion Air

Thai Lion Air covers the same September 26–28 window as AirAsia and Vietjet, with one free change inside a 30-day period. The catch: fare differences can still apply if your new date lands on a holiday or otherwise high-demand travel day, so this one isn’t necessarily fee-free end to end.

Thai Vietjet

Thai Vietjet’s policy tracks closely with AirAsia’s — one free change on the same route for Suvarnabhumi departures between September 26 and 28, new travel within seven calendar days. The fallback option is a Credit Shell valid for 180 days if you’d rather bank the ticket than rebook right away.

My Bag Didn’t Show Up at Suvarnabhumi — What Do I Do?

1. Check the arrivals board before you go stand at the carousel. Suvarnabhumi is posting baggage status updates directly on the boards, so you may already be able to see your flight is behind before you waste twenty minutes waiting at the wrong belt.
2. Skip the general help desk and go straight to Thai Airways’ delayed-baggage channel through Lost and Found. That’s the dedicated line the airport set up specifically for this backlog, and it’s faster than the general information counter, which wasn’t built for cart-shortage volume.
3. File a Property Irregularity Report before you leave the terminal. No PIR means no paper trail, and no paper trail means no reimbursement claim later, whether that’s from the airline or your credit card.
4. Ask what Thai Airways is offering as an interim allowance. Carriers sometimes cover essentials — toiletries, a change of clothes — while a bag is missing; it’s worth asking rather than assuming you’re footing that cost alone.
5. If you’re connecting onward, confirm your bag actually made the transfer before you board. With carts down and staff stretched thin, misconnects are more likely right now than on a normal day — don’t assume it followed you just because your boarding pass scanned fine.

What About Compensation, Not Just a Free Change?

A fee waiver isn’t compensation — it’s the airline making it easier to move your date, nothing more. If Thai Airways or any of the others cancels your flight outright rather than just offering a waiver, you’re entitled to a refund or rerouting under standard rules regardless of what the flood waiver’s fine print says.

Worth flagging separately: the flooding is happening while a new DOT rule reclassifying certain delay causes is set to take effect October 19 in the US — irrelevant to Thai carriers directly, but a useful reminder that “weather-adjacent” disruptions like this one already tend to get coded as outside airline control, meaning don’t expect much beyond the waiver itself. What this situation actually calls for isn’t trip-delay coverage — it’s baggage-delay coverage, a different benefit most travelers never look up until their suitcase is stuck at Suvarnabhumi. Chase Sapphire Reserve’s baggage delay benefit pays up to $100 a day for five days once a checked bag is delayed more than six hours, but the claim goes nowhere without the Property Irregularity Report mentioned above — get that from Thai Airways’ Lost and Found counter before you leave the terminal, not after you’re already back at your hotel wondering where your clothes are.

How This Compares to the Last Few Weeks of Chaos

The five-waivers-that-don’t-match setup is one this site has seen before this fall — Hurricane Nolo’s approach to Hawaii produced the same shape of mismatched policies, and the Icelandair mechanics strike and Rome’s dual airport strikes in September both split travelers into uneven windows too. What sets Bangkok apart from all three is the mechanism: nobody grounded a plane on purpose here. A commute got flooded and some machinery broke, and that alone was enough to back up an entire airport’s baggage system for two days. Storms and strikes announce themselves in advance; a cart shortage doesn’t, which is exactly why it caught so many travelers with no warning at all.

What to Do Right Now

If your Bangkok flight falls inside your airline’s waiver window: make the change today. Ground handling problems compound — the longer flooding keeps staff from reaching Suvarnabhumi, the more backed up rebooking slots get as everyone else in your window has the same idea.

If you’re departing in the next 24 hours regardless of waiver eligibility: leave earlier than you normally would. CAAT’s advisory to allow extra time isn’t boilerplate — roads into both airports are genuinely compromised, and a delay caused by traffic, not the airline, is still a delay you’re responsible for showing up ahead of.

If you’re checking a bag on Thai Airways out of Suvarnabhumi: expect it to take longer than usual, and know the Lost and Found contact numbers before you need them rather than after.

If your flight doesn’t match your airline’s covered dates or airport: ask anyway. These windows have a track record of expanding as situations like this drag on — Nok Air’s original scope was narrower before it settled into what’s listed above.

The Bottom Line

Flooding disrupted ground handling and baggage operations at Suvarnabhumi starting September 26, with Thai Airways hit hardest by staff who couldn’t reach the airport and carts that stopped working. Both Suvarnabhumi and Don Mueang remain open, and Thailand’s Transport Ministry has a 24-hour flood response center coordinating the cleanup across road, rail, and air. Five airlines have waivers live, and the windows don’t line up — Thai Airways runs through September 29, the rest stop at the 28th. Check your specific carrier’s dates and airport before you assume this works like the airline next to it on this list.

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Information current as of September 27, 2026, based on reporting from Suvarnabhumi Airport, Nation Thailand, Khaosod English, Kaohoon International, and Bangkok Post, linked above. Waiver terms and flood conditions are changing quickly — verify your specific flight and eligibility directly with your airline before traveling.