Cheap flights from San Francisco to Hanoi from $615 SFO → HAN
San Francisco International Airport (SFO) → Noi Bai International Airport (HAN)
The cheapest return found recently is $852 with Asiana Airlines, 18 Jan 2027 – 22 Jan 2027, found 2 days ago. The cheapest one-way found recently is $615 with Air Premia, 16 Jun 2027, found 4 days ago.
- Cheapest one-way found recently
- $615, found 4 days ago
- Cheapest return found recently
- $852, 18 Jan 2027 to 22 Jan 2027
- Usual return price
- $856 to $903
- Cheapest month to fly
- January 2027, return fares from $852 found in the last 7 days
Return
The cheapest return fare on each of 4 departure dates is usually $856 to $903.
Cheapest return found recently
$852
18 Jan 2027 – 22 Jan 2027 · Asiana Airlines
San Francisco International Airport (SFO) → Noi Bai International Airport (HAN)
Leaves 11:00 p.m. · Return leaves 1:30 p.m. · 38 h 10 min of travel, both ways together
out 1 stop, back 1 stop
found 2 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$852 18 Jan 2027 – 22 Jan 2027found 2 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 37 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $416 to $1,134.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 4 departure dates from 16 Nov to 25 Mar 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 4-night return fares leaving within 3 days of 18 Jan 2027 to compare.
Every date we hold
19 fares on 4 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 16 Nov – 20 Nov | $914 | Philippine Airlines | San Francisco International Airport (SFO) → Noi Bai International Airport (HAN) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 27 Nov – 25 Dec | $899 | Korean Air | San Francisco International Airport (SFO) → Noi Bai International Airport (HAN) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 18 Jan 2027 – 22 Jan 2027 | $852 | Asiana Airlines | San Francisco International Airport (SFO) → Noi Bai International Airport (HAN) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 25 Mar 2027 – 10 Apr 2027 | $857 | Philippine Airlines | San Francisco International Airport (SFO) → Noi Bai International Airport (HAN) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
Which month looks cheapest?
January 2027 is the cheapest month — from $852.
Airlines on the cheapest dates: Philippine Airlines, Korean Air, Asiana Airlines.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$615
16 Jun 2027 · Air Premia
San Francisco International Airport (SFO) → Noi Bai International Airport (HAN)
Leaves 5:00 p.m. · 49 h 50 min trip
2 stops
found 4 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$615 16 Jun 2027found 4 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 25 days, 8 Oct to 11 Nov, the cheapest one-way we saw each day was $258 to $644.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 16 Jun 2027 to compare.
Every date we hold
2 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 16 Jun 2027 | $615 | Air Premia | San Francisco International Airport (SFO) → Noi Bai International Airport (HAN) | 2 stops | found 4 days ago | Open this trip |
Airlines on the cheapest dates: Air Premia.
Premium cabin fares from San Francisco to Hanoi
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 18 Jan 2027 – 22 Jan 2027 in another cabin: Premium economy · Business · First
Today's prices for 16 Jun 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for San Francisco to Hanoi?
Return
Fares 90 to 179 days before departure were typically 45% lower than 7 to 13 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (37 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 7–13 days | $829 | $457 | +83% | 13 |
| 14–29 days | $899 | $829 | +98% | 10 |
| 30–59 days | $769 | $604 | +69% | 18 |
| 60–89 days | $827 | $638 | +82% | 9 |
| 90–179 days | $454 | $416 | Cheapest seen | 13 |
One-way
Not enough history yet: in 25 days of one-way prices, 8 Oct to 11 Nov, fewer than 3 booking ranges had prices on 7 days or more.
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
San Jose → Hanoi
67 km from San Francisco
$1,389
$537 more than flying from San Francisco
18 Jan 2027 – 22 Jan 2027 · SJC → HAN · out 2 stops, back 1 stop
found 2 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
San Jose → Hanoi
67 km from San Francisco
$711
$96 more than flying from San Francisco
16 Jun 2027 · SJC → HAN · 2 stops
found 4 days ago
Oakland → Hanoi
13 km from San Francisco
$1,322
$707 more than flying from San Francisco
16 Jun 2027 · OAK → HAN · 2 stops
found 4 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 18 Jan 2027 – 22 Jan 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from San Francisco to Hanoi?
The cheapest return found recently is $852 with Asiana Airlines, 18 Jan 2027 to 22 Jan 2027, found 2 days ago. The cheapest return fare on each of 4 departure dates is usually $856 to $903.
How much is a one-way flight from San Francisco to Hanoi?
The cheapest one-way found recently is $615 with Air Premia, 16 Jun 2027, found 4 days ago.
What is the cheapest month to fly from San Francisco to Hanoi?
January 2027 is the cheapest month for a return, from $852, 18 Jan 2027 to 22 Jan 2027, found 2 days ago.
How far ahead should I book a flight from San Francisco to Hanoi?
In 37 days of prices between 24 Sept and 11 Nov, return fares 90 to 179 days before departure were typically 45% lower than 7 to 13 days before departure.
How long is the flight from San Francisco to Hanoi?
The cheapest one-way found recently, with Air Premia on 16 Jun 2027, takes 49 h 50 min with 2 stops.
Which airlines have the cheapest flights from San Francisco to Hanoi?
Between 16 Nov and 25 Mar 2027, Philippine Airlines has the cheapest return on 2 of the 4 departure dates we hold, Korean Air on 1 and Asiana Airlines on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work