3 weeks of travel = ideal format for truly defining long-haul destinations (Pacific, Americas, multi-country Asia). Enough to combine 2-3 coherent destinations without rushing, or to explore one vast country in depth.
Direct answer
Pacific: Australia + New Zealand, Australia + Polynesia. Latin America: Peru + Bolivia, Argentina + Chile Patagonia, Mexico grand tour. Multi-country SE Asia: Vietnam + Cambodia + Laos, Thailand + Cambodia + Vietnam. Vast countries: USA Coast to Coast, India North + South, multi-island Indonesia, complete Japan.
Top 12 three-week destinations
| Destination | Paris flight | Type | Couple budget |
|---|---|---|---|
| Australia + New Zealand | 22h + internal | Pacific combo | €9,000-15,000 |
| Argentina + Chile Patagonia | 14h | Trek + culture | €6,500-12,000 |
| Peru + Bolivia | 13h | Inca + Altiplano | €5,000-9,500 |
| Vietnam + Cambodia + Laos | 12h | Multi-country SE Asia | €4,500-8,500 |
| Multi-island Indonesia | 14h | Bali + Java + Komodo + Sulawesi | €5,500-10,500 |
| Complete Japan | 12h | Tokyo-Hokkaido-Kyushu | €7,500-14,000 |
| Mexico grand tour | 12h | Yucatan + Center + Pacific | €5,500-10,500 |
| USA Coast to Coast | 9h | Classic coast to coast | €8,500-15,000 |
| India North + South | 9h | Rajasthan + Kerala | €5,500-10,000 |
| South Africa + Namibia | 11h | Safari + desert + coast | €8,500-15,000 |
| Thailand + Cambodia + Vietnam | 12h | Indochina | €4,800-9,000 |
| New Zealand North + South | 24h | Auckland + fjords + Rotorua + Queenstown | €12,000-25,000 |
3-week structures
2-country combo format (10-11 days per country)
Argentina + Chile: Buenos Aires 3d + Argentinian Patagonia 5d + Chilean Patagonia 4d + Atacama 4d + Santiago 3d. Australia + New Zealand: Sydney 3d + East Coast Brisbane-Cairns 5d + flight Auckland + North Island 5d + South Island 5d + Auckland 2d.
3-country combo format (6-7 days per country)
Vietnam + Cambodia + Laos: Hanoi + Halong + Sapa 7d + Siem Reap Angkor 4d + Phnom Penh 2d + Luang Prabang 5d + Vientiane 2d. Indochina: Bangkok 3d + Chiang Mai 3d + Siem Reap 3d + Hanoi 3d + Halong 2d + Saigon 3d + beach 3d.
Vast single-country format (3 weeks)
Complete Japan: Tokyo 5d + Hokkaido 5d + Kyoto 5d + Hiroshima/Naoshima 3d + Kyushu 3d. India North + South: Delhi 2d + Rajasthan 7d + flight Kerala + backwaters 5d + Goa coast 4d + Mumbai 3d. USA Coast to Coast: NYC 3d + Washington 2d + flight Las Vegas + Southwest parks 6d + San Francisco 3d + Pacific Coast Highway 4d + Los Angeles 3d.
3-week profile
Childless couples
Ambitious combos: Argentina + Chile, Peru + Bolivia, Vietnam + Cambodia + Laos, India North + South.
Families with teens
Australia + New Zealand, USA West Coast (San Francisco + Los Angeles + national parks + Hawaii), Costa Rica + Mexico Yucatan, Indonesia Bali + Komodo + Java.
Solo
Peru + Bolivia (dense backpacker network), Vietnam + Cambodia + Laos, multi-island Indonesia, Mongolia + Russian Siberia.
Adventure
Complete Patagonia: Torres del Paine + El Chaltén + Carretera Austral + Ushuaia. Complete Mongolia: steppe + Gobi desert + Lake Khövsgöl. Iceland grand tour: complete Highland + Westfjords + coastal tour.
3-week logistics
Flights
- Open-jaw (enter country A, exit country B) often cheaper than simple A-R.
- Round-the-World tickets (Star Alliance, Oneworld): €3,000-6,000 for 6+ global stops.
- Regional air pass: Asia Pass, South America Pass (internal discounts).
Hotels
- Mix: 1-2 comfort hotels per stop + hostels on long legs.
- Book first 2 nights + last 2 nights. Middle flexible.
- TripIt / Wanderlog app to centralize bookings.
Bags
- 1 backpack 50-65L + 1 day pack. No hard suitcase for 3+ weeks in varied countries.
- Washable/quick-dry clothing. No cotton.
- Full first-aid kit: 21 days = probable hiccup.
Vaccines and health
- Consult travel doctor 6-8 weeks ahead. Possible vaccines yellow fever (Amazon), typhoid, hepatitis A.
- Antimalarial depending on zones (Amazon, tropical Africa).
- European health card + travel insurance with minimum €1M cap.
3-week FAQ
What does a 3-week trip cost?
€4,500-8,000 budget backpacking couple (Vietnam-Cambodia-Laos, Peru-Bolivia, India, Mexico). €6,500-12,000 comfort (Argentina+Chile, complete Peru, Japan, Indonesia). €12,000-20,000 premium (Australia+NZ, USA coast to coast, multi-island Polynesia).
3 weeks as a couple: where to go?
Argentina + Chile Patagonia: absolute nature + culture + city combo. Vietnam + Cambodia + Laos: classic Indochina. Peru + Bolivia: altitude + Salt Flats + Inca.
3 weeks with teens: which destination?
Australia + New Zealand: surf, parks, fauna, adrenaline sports. USA West Coast: national parks + cities + Pacific Coast Highway.
How to combine 2 countries in 3 weeks without rushing?
10 days per country minimum + 1-2 days transit. Beyond 2 countries, pace gets stressful. Prefer 2 distinct regions in 1 vast country (India North + South, Indonesia Bali + Java) over 3 skimmed countries.
Do I need a visa for each country over 3 weeks?
Yes often. Vietnam + Cambodia + Laos: Vietnam e-visa ($25), Cambodia e-visa ($30), Laos visa on arrival ($35). Australia + New Zealand: ETA each. Anticipate visas 1-2 months ahead.
Continue elsewhere
- Two-week trips
- Long-term travel
- Adventure travel
- Asia hub
- Americas hub
- Travel budget calculator
- Best travel insurance
Page written by Thomas B. Last updated: May 22, 2026.