Route brief · LIS → WAS
Lisbon → Washington
$651
round-trip · too little price history on this route to compare
Apr 1 '27 – May 3 '27 · 32 nights
Royal Air Maroc1 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 9.5 hours outbound, on a 32-night trip — ticketed under Royal Air Maroc, which on a connecting fare need not operate every leg. At $651 for 5,737 km each way, that works out to about $57 per 1,000 km flown. That is above the $39 typical of medium-haul fares here. Across the 17 departure cities we track at a similar distance from Washington, this fare ranks 8th — 51% above the $432 from London. That puts it in the cheaper half of the 11 routes of similar length we watch out of Lisbon, where the middle fare is $651. 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 2 days we hold a cached fare for
Tap a date → live search
The median cached fare across this calendar is 12% lower than when tracking began on Aug 8 — $798 then versus $706 now, across 3 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 $610, on Sep 25.
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
- Humberto Delgado (LIS) ↔ Dulles (IAD) · Reagan National (DCA) · Baltimore (BWI)
- Flight time
- ~9.5 hours outbound
- Distance
- ~5,737 km each way
- Airlines on the board
- Royal Air Maroc
- Itineraries
- Connections on current fares
- Best months to visit
- Apr–May · Sep–Oct
LIS → WAS, answered.
How far in advance should I book LIS → 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We do not publish a number for this, because we cannot measure it yet.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 Lisbon to Washington?
The current cheapest fares involve a connection, ticketed under Royal Air Maroc. 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 Apr 1 '27 – May 3 '27 · 32 nights.
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Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next LIS → WAS drop reaches you as soon as we find it.
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