One bad meal can do more than ruin a night overseas. It can blow up the flight home, add extra hotel nights, wipe out prepaid touring and, in one recent case, turn into a $44,162 travel insurance claim.
New claims data from 1Cover Travel Insurance suggests the cost can be far less forgettable. Across its Australian and New Zealand brands, 1Cover recorded 130 gastro-related claims in the first quarter of 2026, with payouts totalling around $150,000.
That puts the average claim at about $1,000, turning a bad plate of food into a much bigger travel problem.
Indonesia, including Bali, and Thailand topped the list of destinations where gastro-related claims were lodged, according to the insurer.
When a stomach bug stops the trip
1Cover Director Natalie Ball said travellers often underestimate how quickly a common illness can affect an entire itinerary.
“Most people think a stomach bug overseas is just a rough few days, but it can escalate quickly into a hospital stay, extra hotel nights and last-minute flight changes,” Ball said.
“In many cases it’s not just about feeling unwell. It’s the cost of treatment and possible hospital care that travellers don’t anticipate, particularly in destinations like the United States, where a quick doctor’s visit alone can cost upwards of AUD $200.”
The highest gastro-related claim recorded by 1Cover between January and April 2026 was in the United States, where a traveller became unwell with gastro symptoms and was hospitalised with peptic ulcer disease. The claim reached $44,162 and included an extended hospital stay and surgery.
Other high-cost claims included $21,233 in Singapore, where a tourist with severe gastro was unable to fly home, triggering new flight costs for a family of four.
In Italy, a stomach bug left a traveller unable to leave their accommodation, with the claim covering flight changes for a family of four and totalling $11,385.
In Indonesia, a traveller hospitalised with acute gastroenteritis required medical treatment and a ground ambulance transfer between hospitals, resulting in a $9,617.37 claim.
Another traveller became unwell before travelling from Argentina to Chile with acute gastroenteritis, leading to an $8,146 claim that included unused pre-booked travel components, including a Galápagos Island hopping tour.
The flow-on costs agents should flag
For travel advisors, the figures offer a useful reminder that gastro claims are rarely limited to a doctor’s bill.
Flights may need to be changed. Hotel stays may need to be extended. Tours may be missed. Travelling companions may also be affected, especially when families are moving through a fixed itinerary.
1Cover said its highest recorded cancellation-related gastro claim during the January to April 2026 period was around $4,600, after illness before departure forced major travel changes.
Ball said short-term illness could still create expensive disruption.
“Gastro is usually temporary, so travellers are more likely to delay or rearrange their plans rather than cancel altogether. But even a relatively short illness can still lead to significant costs, especially when medical treatment or last-minute travel changes are involved,” she said.
The data comes as Australians continue to book bigger-ticket trips, longer itineraries and more complex destination combinations, with disruption costs often extending beyond the traveller who becomes unwell.
Ball said travellers can easily focus on major global risks and overlook the everyday illnesses that can still derail a holiday.
“With major global travel concerns dominating headlines, it can be easy to overlook how disruptive a seemingly minor illness can be while travelling,” she said.
“Everyday illnesses can derail an entire trip, and before you know it, you’re changing flights, extending hotel stays or cancelling long-awaited plans.”
For advisors, the takeaway is less about scare tactics and more about the practical conversations that happen before departure: what happens if a client can’t fly, needs care overseas, misses a prepaid tour or has to keep the rest of the family in destination for extra nights?
Because sometimes the most expensive part of a holiday is the meal nobody remembers fondly.
