Two weeks, three countries: the Mekong route that actually fits

Hanoi to Siem Reap in 14 days without spending half of them on buses — the sequencing is everything.

01The shape of the route

North to south with the river: Vietnam's north (4 days) → fly to Laos (4 days) → overland into Cambodia (5 days) → fly out of Siem Reap. The one non-negotiable flight is Hanoi→Luang Prabang; every overland alternative there costs 24+ hours you don't have.

02Days 1–4 · Vietnam

Two nights Hanoi (old quarter food crawl, one museum), one night on Ha Long Bay water, night four back in Hanoi for the morning flight. Resist adding Sa Pa — on 14 days it's the thing that breaks the plan.

03Days 5–8 · Laos

Three Luang Prabang nights: alms dawn once, Kuang Si early, one day of deliberately nothing. Day 8, the railway south to Vientiane for the evening flight — or hold the itinerary a day and do Vang Vieng's balloons if the budget smiles.

04Days 9–14 · Cambodia

Fly Vientiane→Phnom Penh. Two capital nights: palace, S-21 half-day, riverside evenings. Giant Ibis bus up to Siem Reap (day 11), then the three-day Angkor Pass exactly as designed: hits, outer circuit + Banteay Srei, revisit. Fly home from REP/SAI.

05Where the money goes

Realistic mid-range total, flights inside the route included: $1,150–1,500 per person — the two regional flights are ~$180 of it and buy you four extra usable days.

06The budget, dissected by country

Vietnam runs cheapest per quality unit: $35–50/day mid-range covers a private room, three restaurant meals and transport. Laos feels cheap but isn't quite — isolation taxes everything, and the railway plus Kuang Si day makes $40–55/day realistic. Cambodia swings widest: $30/day is comfortable in Phnom Penh, while an Angkor day with pass, tuk-tuk and guide can alone touch $80. The honest fortnight total lands at $1,150–1,500 per person including regional flights; shave $300 by swapping the Ha Long cruise for Ninh Binh and bunking in dorms, or add $400 for boutique-everything without changing a single logistics decision.

07SIMs, money and staying connected across three borders

One eSIM covering all three countries (regional Asia plans are everywhere now) beats juggling local SIMs unless you need a local number for the LCR railway app — the single case where a Lao physical SIM earns its slot. Money: Vietnam is card/QR-friendly, Laos is cash-with-ATM-fees, Cambodia runs its dollar/riel duet — so the pattern is: arrive in each country, one large ATM pull, done. Tell your bank the three-country route or enjoy a frozen card in a Vientiane noodle shop. Offline-download Google Maps for each city on hotel wifi; the route's dead zones are exactly where you'll want the map most.

08The booking timeline that keeps prices sane

Work backwards from departure. T-minus 3 months: the two regional flights (Hanoi→Luang Prabang, Vientiane→Phnom Penh) — these are thin routes where prices only climb. T-2 months: e-visa applications and the Ha Long cruise, which sells its best mid-range cabins early. T-2 weeks: railway tickets via an agent for the Laos leg, sleeper berths on dsvn.vn for Vietnam. T-3 days: nothing — every hotel on this route except peak-season Luang Prabang can be booked 48 hours out, and keeping beds flexible is what lets you stretch a town you love. The one thing never to pre-book: Angkor sunrise weather.

09Questions we actually get