Route brief · SIN → WAS
Singapore → Washington
$854
round-trip · too little price history on this route to compare
Oct 2 – Oct 16 · 14 nights
Air China1 stop
Cached fare — the booking search re-prices live before you pay.
Destination briefWASWashingtonFree museums by the dozen, and three airports competing hard enough to keep transatlantic fares honest.Best windowApr–May · Sep–OctAirportsDulles (IAD) · Reagan National (DCA) · Baltimore (BWI)All routes into WashingtonWhen this route gets cheap.
Best time to be in Washington: Apr–May · Sep–Oct. Fare history for this route is still thin, so we make no seasonal call yet.
The cheapest itinerary we are tracking makes one stop and takes about 21.5 hours outbound, on a 14-night trip — ticketed under Air China, which on a connecting fare need not operate every leg. At $854 for 15,539 km each way, that works out to about $27 per 1,000 km flown. That is well under the $40 that ultra-long-haul fares on this board typically run. Of the 7 departure cities we track at a similar distance from Washington, this is the cheapest right now — though Bangkok is within a few dollars. It is also the 3rd cheapest of the 18 routes of similar length we watch out of Singapore. We have 2 months of cached prices for this route so far — not enough to call a fare cheap or expensive, so we publish the price without a percentage.
The one day we hold a cached fare for
Tap a date → live search
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.
Route facts
- Airports
- Changi (SIN) ↔ Dulles (IAD) · Reagan National (DCA) · Baltimore (BWI)
- Flight time
- ~21.5 hours outbound
- Distance
- ~15,539 km each way
- Airlines on the board
- Air China
- Itineraries
- Connections on current fares
- Best months to visit
- Apr–May · Sep–Oct
SIN → WAS, answered.
How far in advance should I book SIN → Washington?
We do not publish a number for this, because we cannot measure it yet.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. See /guides/what-moves-a-flight-price/ for the levers we can measure.
Are there nonstop flights from Singapore to Washington?
The current cheapest fares involve a connection, ticketed under Air China. 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 August 24). 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 Washington?
Lock the flight first — then compare stays for Oct 2 – Oct 16 · 14 nights.
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Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next SIN → WAS drop reaches you as soon as we find it.
Follow SIN → WAS