Route brief · SFO → BKK
San Francisco → Bangkok
$423
−38% vs typical
seasonal median $680 · difference $257
Sep 8 – Sep 17 · 9 nights
ANA1 stop
- Usual monthly lows
- $423–$682
- Board rank
- Stronger than 87%
- Route sample
- 4 observed months
Cached fare — the booking search re-prices live before you pay.
Destination briefBKKBangkokThe backpacker cliché that still delivers: gold temples, boat noodles, $12 street-food feasts.Best windowNov–FebAirportsSuvarnabhumi (BKK) · Don Mueang (DMK)All routes into BangkokWhen this route gets cheap.
Cached-fare history: across 4 months, Sep is the cheapest for SF → BKK. Best time to be there: Nov–Feb.
Fares bottom out in September around $423 and peak in February near $763 — a $340 spread across the 4 months we track. The cheapest itinerary we are tracking makes one stop and takes about 17.5 hours outbound, on a 9-night trip — ticketed under ANA, which on a connecting fare need not operate every leg. At $423 for 12,745 km each way, that works out to about $17 per 1,000 km flown. That is well under the $40 that ultra-long-haul fares on this board typically run. Across the 15 departure cities we track at a similar distance from Bangkok, this fare ranks 2nd — 10% above the $386 from Los Angeles. That puts it in the cheaper half of the 38 routes of similar length we watch out of San Francisco, where the middle fare is $830.
The one day we hold a cached fare for
Tap a date → live search
The median cached fare across this calendar is 17% lower than when tracking began on Aug 8 — $817 then versus $682 now, across 6 recorded snapshots. This is a calendar-level trend, so an individual deal above can be lower. The lowest single day we have seen here is $357, on Aug 31.
These are the only days we have a cached price for on this route so far — not the only days it flies. The search above covers any date.
Cheapest in Sep · around $423
38% below the $680 typical fare
Cheapest round-trip fare found per month · San Francisco → Bangkok · cached-price history
Route facts
- Airports
- SFO · Oakland (OAK) · San José (SJC) ↔ Suvarnabhumi (BKK) · Don Mueang (DMK)
- Flight time
- ~17.5 hours outbound
- Distance
- ~12,745 km each way
- Typical price
- $680 round-trip (seasonal median)
- Airlines on the board
- ANA
- Itineraries
- Connections on current fares
- Best months to visit
- Nov–Feb
SF → BKK, answered.
Is $423 a good price for San Francisco to Bangkok?
Yes — the seasonal median for this route is around $680 round-trip. At $423 you're 38% below that, saving about $257, which we rate great for this route.
What is the cheapest month to fly from San Francisco to Bangkok?
Across 4 months of cached-fare history, Sep comes out cheapest on this route. The best months to actually be in Bangkok are Nov–Feb — when those overlap, that's your window.
How far in advance should I book SF → Bangkok?
We do not publish a number for this, because we cannot measure it yet. Answering it honestly means watching the same departure date on this route over many weeks as it approaches, and that archive is still filling up — so any "book N days ahead" figure here would be borrowed from somewhere else rather than measured. What we can measure is which month is cheap: across 4 months of cached fares, Sep comes out lowest on this route. See /guides/what-moves-a-flight-price/ for what does move a fare.
Are there nonstop flights from San Francisco to Bangkok?
The current cheapest fares involve a connection, ticketed under ANA. Nonstop options exist on many dates at higher prices — check the live search for your exact dates.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on September 1). Airlines reprice constantly, so the booking search re-checks the live price before you pay. Fresher finds are far more likely to still be available.
Next step
Sleeping in Bangkok?
Lock the flight first — then compare stays for Sep 8 – Sep 17 · 9 nights.
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Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next SF → BKK drop reaches you as soon as we find it.
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