Route brief · WAS → BCN
Washington → Barcelona
$426
−40% vs typical
seasonal median $715 · difference $289
Dec 7 – Dec 10 · 3 nights
TAP Air Portugal1 stop
- Usual monthly lows
- $456–$792
- Board rank
- Stronger than 89%
- Route sample
- 6 observed months
Cached fare — the booking search re-prices live before you pay.
Destination briefBCNBarcelonaGaudí’s fever dream with a beach attached. One of the cheapest big-city landings in Europe.Best windowMay–Jun · Sep–OctAirportsEl Prat (BCN)All routes into BarcelonaWhen this route gets cheap.
Cached-fare history: across 6 months, Dec is the cheapest for WAS → BCN. Best time to be there: May–Jun · Sep–Oct.
Fares bottom out in December around $426 and peak in July near $965 — a $539 spread across the 6 months we track. The cheapest itinerary we are tracking makes one stop and takes about 9 hours outbound, on a 3-night trip — ticketed under TAP Air Portugal, which on a connecting fare need not operate every leg. At $426 for 6,490 km each way, that works out to about $33 per 1,000 km flown. That is below the $44 typical of long-haul fares here. Across the 9 departure cities we track at a similar distance from Barcelona, this fare ranks 4th — 1.7× the $255 we hold from Dubai. That puts it in the cheaper half of the 29 routes of similar length we watch out of Washington, where the middle fare is $644.
The 8 days we hold a cached fare for
Tap a date → live search
The median cached fare across this calendar is 1% higher than when tracking began on Aug 8 — $747 then versus $753 now, across 5 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 $426, on Dec 7.
- Tue, Sep 1$931
- Sat, Sep 26$792
- Fri, Oct 9$828
- Thu, Oct 29$713
- Mon, Nov 2$693
- Fri, Nov 20$456
- Mon, Dec 7$426
- Fri, Dec 18$1,310
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 Dec · around $426
40% below the $715 typical fare
Cheapest round-trip fare found per month · Washington → Barcelona · cached-price history
Route facts
- Airports
- Dulles (IAD) · Reagan National (DCA) · Baltimore (BWI) ↔ El Prat (BCN)
- Flight time
- ~9 hours outbound
- Distance
- ~6,490 km each way
- Typical price
- $715 round-trip (seasonal median)
- Airlines on the board
- TAP Air Portugal
- Itineraries
- Connections on current fares
- Best months to visit
- May–Jun · Sep–Oct
WAS → BCN, answered.
Is $426 a good price for Washington to Barcelona?
Yes — the seasonal median for this route is around $715 round-trip. At $426 you're 40% below that, saving about $289, which we rate rare for this route.
What is the cheapest month to fly from Washington to Barcelona?
Across 6 months of cached-fare history, Dec comes out cheapest on this route. The best months to actually be in Barcelona are May–Jun · Sep–Oct — when those overlap, that's your window.
How far in advance should I book WAS → Barcelona?
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 6 months of cached fares, Dec comes out lowest on this route. See /guides/what-moves-a-flight-price/ for what does move a fare.
Are there nonstop flights from Washington to Barcelona?
The current cheapest fares involve a connection, ticketed under TAP Air Portugal. 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 Barcelona?
Lock the flight first — then compare stays for Dec 7 – Dec 10 · 3 nights.
Browse hotels ↗
Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next WAS → BCN drop reaches you as soon as we find it.
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