Patna to Hanoi flight guide — best airlines, routing via Kolkata/Delhi/Bangkok, fares, baggage and Vietnam e-visa tips for Indians.
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Quick answer: Patna to Hanoi flights take about ≈ 9–12h (1-stop via Kolkata/Delhi/Bangkok), No non-stop — 1-stop via Kolkata (CCU), Delhi (DEL) or Bangkok (BKK). Indian passport holders should check the visa requirement summarised below. Use the live search above to compare today's cheapest PAT–HAN fare across every airline, OTA and travel agent in one place.
Last reviewed June 2026 by the FlightGPT flights desk · route facts cross-checked against DGCA and the Airports Authority of India (AAI) · fares are live — verify the final price in search before booking.
Looking for cheap flights from Patna to Hanoi? FlightGPT compares live PAT to HAN fares across every connected source — Indian carriers, Gulf hubs, OTAs and trusted travel agents — and shows the cheapest options side by side. Whether you want a Patna to Hanoi non-stop tomorrow, a last-minute weekend deal or the lowest price three months out, every active Patna-Hanoi fare is one search away.
Jay Prakash Narayan Airport in Patna is domestic-only for practical purposes, so your journey starts with an IndiGo or Air India hop to Kolkata or Delhi. From Kolkata, IndiGo and VietJet run convenient onward services towards Vietnam, while Delhi gives you Vietnam Airlines and more daily options. Booking on a single ticket keeps your bags checked through; if you self-connect, allow a comfortable buffer to re-check baggage and clear security at the Indian metro.
Kolkata is the natural gateway from Bihar because it is close and increasingly well-connected to Southeast Asia. Delhi offers more frequency and the option of Vietnam Airlines' direct metro service. Routing via Bangkok on Thai Airways or Bangkok Airways adds a stop but can be cheap and lets you stretch your legs at Suvarnabhumi.
Hanoi's Noi Bai International Airport sits about 27 km north of the Old Quarter, roughly a 40–50 minute drive. International flights use Terminal 2, which is modern and easy to navigate. The cheapest way into town is the public bus (around 35,000 VND), while a metered taxi or Grab to the centre costs more but is faster. Have some Vietnamese dong or a card ready for the ride. See our Kolkata to Hanoi guide for the long-haul leg.
Vietnam Airlines fares include 23 kg checked baggage, but VietJet and other low-cost carriers sell baggage separately, so always pre-purchase online. On split tickets each airline's allowance applies independently — a through-checked 30 kg bag on one leg may drop to a paid add-on on the next. Cabin baggage is usually capped at 7 kg on budget airlines, and they weigh it at the gate, so pack carefully.
Economy round-trips on this routing typically run ₹28,000–₹48,000 depending on season and stops, with the best deals in March, May and September. Avoid Lunar New Year (Tet) in late January/February and the October–December peak when fares jump. Booking around 5–9 weeks ahead generally gives the best price, and a fare alert helps you catch VietJet and IndiGo sales.
Hanoi is the cultural heart of Vietnam — lakes, French-colonial streets, street food and the buzzing Old Quarter. Most visitors use it as a base for the limestone seascapes of Ha Long Bay (about 2.5 hours away), the rice terraces of Sapa, and Ninh Binh's river caves. Vietnam offers excellent value for the rupee, plenty of vegetarian-friendly food, and a manageable pace, which is why it has surged in popularity among Indian travellers.
Indian travellers need a visa for Vietnam, and the easiest route is the official 90-day e-visa applied for online before departure; it usually processes in about 3–5 working days and allows single or multiple entry. Carry a printout of the approval letter for check-in and immigration. Make sure your passport has at least six months' validity and a couple of blank pages. Read our visa guide for the current steps and fees.
No. You connect at least once, usually via Kolkata or Delhi, for a total journey of about 9–12 hours over roughly 2,950 km.
Yes. Indians need a visa; the 90-day e-visa is applied for online and typically processes in 3–5 working days.
Kolkata is the closest gateway from Bihar, while Delhi offers more daily options including Vietnam Airlines; layovers are usually 2–5 hours.
Hanoi is 1 hour 30 minutes ahead of India (UTC+7 versus IST UTC+5:30).
March, May and September are usually the cheapest, with round-trips from around ₹28,000; avoid Tet and the October–December peak.
Noi Bai is about 27 km from the Old Quarter, a 40–50 minute drive; the public bus costs roughly 35,000 VND.
There is no single "cheapest day" to fly Patna to Hanoi — the lowest fare is the one you find by comparing live. Open the search above to line up Patna–Hanoi prices across ; booking ahead and avoiding peak weekends typically trims 25–40 percent off the walk-up fare.
Flying Patna to Hanoi at short notice doesn't always mean overpaying. Off-peak departures and unsold seats on can surface real same-week deals. Put your date into the FlightGPT search above and we'll show every available PAT–HAN fare side by side in seconds.
There is currently no non-stop service between Patna and Hanoi — itineraries connect via a hub, with a typical journey of ≈ 9–12h (1-stop via Kolkata/Delhi/Bangkok). Comparing hubs side by side often saves 15-30 percent. FlightGPT lets you filter by "Direct only" or compare both side by side — useful when you want the cheapest Patna Hanoi ticket but are open to a layover.
Patna–Hanoi pricing rewards comparison over loyalty: the best value rotates between low-cost and full-service carriers depending on the date. FlightGPT's grid surfaces every Patna Hanoi fare with baggage and meals counted in, so the genuinely cheapest all-in ticket is the one that rises to the top.