International travel has rebounded strongly since the pandemic years, and with it has come renewed scrutiny of the industry’s environmental footprint. Aviation, cruise shipping, and mass tourism all place measurable strain on ecosystems, water supplies, and local communities — particularly in destinations that depend on tourism revenue but lack the infrastructure to absorb large visitor numbers. For travelers crossing borders, the choices made before and during a trip can meaningfully change that equation. This guide outlines ten practices worth adopting, along with certifications that can help verify claims made by hotels, tour operators, and airlines.
1. Choose Direct Flights and Efficient Routes
Takeoff and landing consume a disproportionate share of a flight’s fuel, which means connecting itineraries generally produce more emissions per mile traveled than direct routes. When a direct flight is unavailable or significantly more expensive, choosing a routing with fewer stops still tends to reduce the overall footprint. Some booking platforms now display estimated carbon output alongside price and duration, giving travelers a basis for comparison beyond cost alone.
Consider Alternatives to Short-Haul Flights
In regions with developed rail networks — much of Europe, parts of East Asia, and increasingly the northeastern United States — train travel between cities under a few hundred kilometers apart is often only marginally slower than flying once airport transfers and security queues are factored in, and it typically produces a fraction of the emissions.
2. Pack Light
Aircraft fuel consumption scales with weight. A lighter suitcase is a small individual contribution, but airlines optimizing for fuel efficiency across millions of passengers make this a genuine, if modest, factor. Beyond emissions, traveling with less also reduces the temptation to overconsume at the destination.
3. Stay in Certified Accommodations
Hotels and lodges vary enormously in how they manage water, energy, and waste. Independent certification schemes offer a way to compare properties without relying solely on marketing copy.
Certifications Worth Recognizing
- Green Key — an international certification covering water and energy management, waste handling, and staff training, used across thousands of properties in dozens of countries.
- EarthCheck — widely used across Asia-Pacific and popular with resorts and tour operators seeking measurable environmental benchmarking.
- LEED certification — applied to buildings, including hotels, based on design, construction, and operational efficiency.
- Rainforest Alliance — commonly seen on tour operators and lodges in Latin America and the Caribbean, with a focus on biodiversity and community impact alongside environmental standards.
None of these certifications guarantee perfection, and standards differ between them, but a certified property has at minimum submitted to external review — something worth more than a self-described “eco-friendly” label with no supporting body behind it.
4. Support Locally Owned Businesses
Large international hotel chains and resort complexes often repatriate a significant share of tourism revenue back to shareholders or head offices abroad, a pattern sometimes referred to as “leakage.” Booking locally owned guesthouses, eating at family-run restaurants, and hiring local guides keeps a larger share of spending within the destination’s economy, which in turn supports the communities most affected by tourism’s environmental costs.
5. Reduce Single-Use Plastic
Many destinations — especially island nations and coastal regions dependent on tourism — struggle with waste management systems that were never designed for the volume of visitors they now receive. Carrying a reusable water bottle, refusing single-use bags, and avoiding individually wrapped toiletries reduces pressure on local waste infrastructure that may have no formal recycling capacity at all.
6. Respect Water Scarcity
Tourists in water-stressed regions — parts of Southern Europe, North Africa, and Southeast Asia during dry seasons — often use markedly more water per day than local residents, largely through pools, laundry services, and long showers. Simple adjustments, such as reusing towels and limiting shower time, ease demand on systems that local communities depend on year-round.
7. Choose Low-Impact Wildlife Encounters
Wildlife tourism ranges from genuinely conservation-oriented operations to attractions that cause direct harm to animals. Riding elephants, swimming with captive dolphins, or visiting roadside “sanctuaries” that allow physical contact with wild animals frequently sit at the harmful end of that spectrum, regardless of how they are marketed.
What to Look For
- Operators affiliated with recognized conservation organizations or research institutions
- Observation-based experiences that do not involve touching, riding, or feeding wild animals
- Transparent information about where animals came from and what happens to them outside tourist hours
8. Offset Emissions Thoughtfully
Carbon offset programs allow travelers to fund projects — reforestation, renewable energy, methane capture — intended to counterbalance the emissions from a trip. The quality of these programs varies considerably, and offsetting should be treated as a supplement to reducing emissions directly, not a substitute for it. Programs verified under standards such as the Gold Standard or Verified Carbon Standard undergo third-party auditing, which offers more accountability than uncertified schemes.
9. Travel in the Off-Season
Overtourism — the concentration of visitors in a small number of destinations during narrow windows of the year — strains water systems, waste management, and housing markets in places like Venice, Barcelona, and Bali during peak months. Traveling in shoulder or off-peak seasons distributes demand more evenly, often results in a more comfortable experience for the traveler, and can ease pressure on local resources and residents.
10. Choose Tour Operators with Transparent Environmental Policies
Operators that publish clear information about group sizes, waste practices, local hiring, and conservation partnerships tend to be more accountable than those offering only vague sustainability language. Membership in industry bodies such as the Global Sustainable Tourism Council (GSTC) — which sets criteria used by many national tourism boards and certification schemes — is a reasonable indicator that an operator has been through some form of external assessment.
Putting It Together
No single choice on this list will offset the environmental cost of international travel entirely, and air travel in particular carries a footprint that individual behavior can only partially mitigate. But the cumulative effect of these smaller decisions — how a traveler gets around, where they stay, what they buy, and which operators they support — shapes both the environmental and economic impact of tourism on the places being visited. For travelers weighing these choices trip by trip, certifications and transparent operators offer a useful, if imperfect, starting point for telling substantive sustainability efforts apart from marketing.