How the cheapest fare moved
Aug 27: €358
€358
Aug 24
Aug 27
low €340 · high €358
Departure-day prices · December 2026 San Francisco → Hanoi
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Cheapest days highlighted · darker = pricier · past days greyed out · cached one-way fares.
Return-day prices · December 2026 Hanoi → San Francisco
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Best time to visit Hanoi — climate Jan: ~23°C daytime, 3 rainy days
23°
Jan Feb: ~21°C daytime, 14 rainy days
21°
Feb Mar: ~25°C daytime, 6 rainy days
25°
Mar Apr: ~31°C daytime, 12 rainy days
31°
Apr May: ~31°C daytime, 19 rainy days
31°
May Jun: ~33°C daytime, 24 rainy days
33°
Jun Jul: ~33°C daytime, 22 rainy days
33°
Jul Aug: ~32°C daytime, 25 rainy days
32°
Aug Sep: ~31°C daytime, 20 rainy days
31°
Sep Oct: ~29°C daytime, 13 rainy days
29°
Oct Nov: ~24°C daytime, 11 rainy days
24°
Nov Dec: ~24°C daytime, 12 rainy days
24°
Dec Best value: Sep — fares from €340 and ~31°C daytime.
Flights from San Francisco to Hanoi start around €340 (typically 1 stop). Range seen recently: €340–364, based on 30 fares found by travellers.
Fly (from €340)
17h 05m duration
€340–364 recent fares
Book
Cheapest cached fares San Francisco → Hanoi; typically 1 stop (e.g. PR). · Based on 30 fares found by travellers in the last 48h
Cheapest round trips to Hanoi Fares found by travellers in the last 48 hours — refreshed daily.
Sep 21 – Oct 19
Korean Air · 1 stop · 17h 10m
€357
Book
Oct 2 – Oct 30
China Airlines · 1 stop · 16h 40m
€402
Book
Nov 21 – Nov 26
China Eastern · 1 stop · 17h 20m
€680
Book
Feb 12 – Feb 21
Korean Air · 1 stop · 18h 00m
€688
Book
Sep 30 – Oct 30
China Airlines · 1 stop · 16h 40m
€716
Book
Dec 23 – Jan 2
Vietnam Airlines · 1 stop · 18h 45m
€1340
Book
Weather in Hanoi
Thu
⛈️
33°
26°
💧100%
Fri
⛈️
33°
26°
💧58%
Sat
⛈️
30°
26°
💧90%
Sun
⛈️
33°
26°
💧69%
Mon
🌧️
30°
25°
💧79%
Tue
🌧️
32°
24°
💧50%
Wed
🌤️
33°
25°
💧11%
In Dec, Hanoi typically sees ~24°C daytime highs and 12 rainy days.
Where to stay in Hanoi 3★+ hotels from €37/night (37 hotels sampled, ~3 weeks out).
Flora Centre Hotel & Spa
hotel · Hanoi
from €37/night ★ 4
Imperial Hotel & Spa
hotel · Hanoi
from €43/night ★ 4
Rex Hanoi Hotel
hotel · Hanoi
from €45/night ★ 4
Good to know Time difference +14h
Time in the air 16h 40m
Things to do in Hanoi Top-rated tours and tickets from €10 — book ahead for the popular ones.
Tours and tickets provided by Viator (a Tripadvisor company). Some links earn Stayonomy a commission.
About Hanoi
Hanoi (Vietnamese: Hà Nội), the capital of Vietnam and its second-largest city, is a fascinating blend of East and West, with Chinese influence from centuries of dominance, and French je ne sais quoi from its colonial past. It was largely unspoiled by the modern architecture of the 1970s and 80s, and is now undergoing a rapid transformation that makes it a rising star in Southeast Asia.
Read the full Hanoi guide
Guide content from Wikivoyage contributors (CC BY-SA).
Popular from San Francisco Cheapest destinations travellers searched recently — refreshed daily.
Flight prices are real fares travellers found in the last 48 hours, refreshed daily — the booking site confirms the final price. Train, bus and ferry fares are shown on the operators' booking sites. Weather data by Open-Meteo ; exchange rates: ECB reference. Data updated 2026-08-27. Some links earn Stayonomy a commission at no cost to you.