Route brief · OSL → WAS
Oslo → Washington
$528
round-trip · too little price history on this route to compare
Sep 4 – Sep 10 · 6 nights
British Airways2 stops
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 2 stops and takes about 13 hours outbound, on a 6-night trip — ticketed under British Airways, which on a connecting fare need not operate every leg. At $528 for 6,233 km each way, that works out to about $42 per 1,000 km flown. That is about the $44 typical of long-haul fares here. Across the 19 departure cities we track at a similar distance from Washington, this fare ranks 4th — 22% above the $432 from London. That puts it in the cheaper half of the 11 routes of similar length we watch out of Oslo, where the middle fare is $578. 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.
Route facts
- Airports
- Gardermoen (OSL) · Torp (TRF) ↔ Dulles (IAD) · Reagan National (DCA) · Baltimore (BWI)
- Flight time
- ~13 hours outbound
- Distance
- ~6,233 km each way
- Airlines on the board
- British Airways
- Itineraries
- Connections on current fares
- Best months to visit
- Apr–May · Sep–Oct
OSL → WAS, answered.
How far in advance should I book OSL → 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We do not publish a number for this, because we cannot measure it yet.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 Oslo to Washington?
The current cheapest fares involve a connection, ticketed under British Airways. 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 9). 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 Sep 4 – Sep 10 · 6 nights.
Browse hotels ↗
Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next OSL → WAS drop reaches you as soon as we find it.
Follow OSL → WAS