Route brief · WAS → SIN
Washington → Singapore
$1,151
round-trip · too little price history on this route to compare
Oct 7 – Oct 12 · 5 nights
Air Canada Express2 stops
Cached fare — the booking search re-prices live before you pay.
Destination briefSINSingaporeA city that treats an airport as a national monument — and prices its stopover fares to tempt you.Best windowFeb–AprAirportsChangi (SIN)All routes into SingaporeWhen this route gets cheap.
Best time to be in Singapore: Feb–Apr. Fare history for this route is still thin, so we make no seasonal call yet.
The cheapest itinerary we are tracking makes 2 stops and takes about 23.5 hours outbound, on a 5-night trip — ticketed under Air Canada Express, which on a connecting fare need not operate every leg. At $1,151 for 15,539 km each way, that works out to about $37 per 1,000 km flown. That is below the $40 typical of ultra-long-haul fares here. Across the 13 departure cities we track at a similar distance from Singapore, this fare ranks 9th — 2.8× the $405 we hold from San Francisco. For context, the middle fare among the 20 routes of similar length we watch out of Washington is $1,053. We have 1 month 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
- Dulles (IAD) · Reagan National (DCA) · Baltimore (BWI) ↔ Changi (SIN)
- Flight time
- ~23.5 hours outbound
- Distance
- ~15,539 km each way
- Airlines on the board
- Air Canada Express
- Itineraries
- Connections on current fares
- Best months to visit
- Feb–Apr
WAS → SIN, answered.
How far in advance should I book WAS → Singapore?
We do not publish a number for this, because we cannot measure it yet.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 Washington to Singapore?
The current cheapest fares involve a connection, ticketed under Air Canada Express. 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 Singapore?
Lock the flight first — then compare stays for Oct 7 – Oct 12 · 5 nights.
Browse hotels ↗
Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next WAS → SIN drop reaches you as soon as we find it.
Follow WAS → SIN