Bangkok to Hanoi: 3‑Week Backpacking Circuit

You’ll land in Bangkok, spend four nights there, then hop a cheap bus to Chiang Mai for three nights, catch a night train to Siem Reap, linger two nights, and finish with a week in Hanoi. The whole loop fits comfortably on a $1,200 budget if you stick to dorm rooms, street food, and public transport.

Day‑by‑Day Breakdown

Bangkok (Days 1‑4)

• Accommodation: Dorm at Lub d Bangkok Siam, $12/night, Sukhumvit 11 (central, easy MRT access).
• Food: Breakfast at hostel (included), lunch at Soi 38 food stalls ($2), dinner at a local noodle shop ($3).
• Activities: Grand Palace ($15 entry), Khao San Road for cheap drinks ($5).
• Transport to next city: Book a 12‑hour Nontachai Express bus to Chiang Mai, $22, departs 9 pm, arrives 9 am.

Chiang Mai (Days 5‑7)

• Accommodation: NapPark Hostel, $9/night, Old City (walking distance to night markets).
• Food: Breakfast at hostel ($0), lunch at Warorot Market ($2), dinner at a family‑run BBQ ($4).
• Activities: Doi Suthep temple (songthaew $1), Elephant Nature Park day trip (budget option, $45, includes transport and lunch).
• Transport to next city: Night train from Chiang Mai to Siem Reap, $38, 9‑hour sleeper, 2‑berth cabin.

Siem Reap (Days 8‑9)

• Accommodation: Onederz Hostel, $10/night, near Pub Street (good for early morning Angkor visits).
• Food: Breakfast at hostel ($0), lunch at a street stall ($1.5), dinner at a riverside restaurant ($5).
• Activities: Angkor Wat temple pass 3‑day ($65), bike rental ($2/day).
• Transport to next city: Direct bus to Phnom Penh, $12, 6‑hour, departs 8 am, arrives 2 pm.

Hanoi (Days 10‑21)

• Accommodation: Hanoi Backpackers Hostel, $8/night, Old Quarter (close to Hoan Kiem Lake).
• Food: Breakfast at hostel ($0), lunch at Bún Chả stall ($2), dinner at a cheap pho joint ($3).
• Activities: Hoan Kiem Lake walk (free), Museum of Ethnology ($2), day trip to Ninh Binh ($25, includes boat and entrance).
• Total estimated cost for Hanoi (12 nights): $96 (hostel) + $36 (food) + $30 (activities) = $162.

Cost Summary

When NOT to do this

• If you’re on a tight schedule: The night train from Chiang Mai to Siem Reap can be delayed by border checks; you might lose a full day.
• If you hate hostels: All suggested dorms are budget‑only; private rooms add $10‑$15 per night, pushing the total above $1,500.
• If you need nightlife: The itinerary leans toward cultural sites; you’ll find limited late‑night bars in Siem Reap and Hanoi after 10 pm.

Takeaway

Stick to this circuit if you want a realistic taste of southeast‑asia backpacking without constantly hunting for deals; the numbers add up, the routes are reliable, and the tradeoffs are clear.