
OSL to WAWPoland
Warsaw
$51
usually $105
−51%
Most monthly lows $93–$150. Cheaper than every other month on record (4).
Display prices in
Flights · OSL → BCN
Best fare, round trip
$128
−25%
below its usual $170
you keep $42
Most of this route’s monthly lows fall between $163 and $220. The drop beats 67% of measured fares on the board, over 5 observed months.
Cached fare — the booking search re-prices live before you pay.
SpainBarcelonaGaudí’s fever dream with a beach attached. One of the cheapest big-city landings in Europe.Best windowMay–Jun · Sep–OctAirportsEl Prat (BCN)Every route into BarcelonaFare seasonality
Fares bottom out in November around $128 and peak in December near $322, 152% dearer, across the 5 months we track. The cheapest itinerary we are tracking makes one stop and takes about 4 hours outbound, on a 1-night trip — ticketed under AL, which on a connecting fare need not operate every leg. At $128 for 2,143 km each way, that works out to about $30 per 1,000 km flown. That is below the $41 per 1,000 km typical of short-haul fares here. Across the 5 departure cities we track at a similar distance from Barcelona, this fare ranks 4th — 2.4× the $54 we hold from Stockholm. That puts it in the cheaper half of the 14 routes of similar length we watch out of Oslo, where the middle fare is $149. The best time to be in Barcelona: May–Jun · Sep–Oct.
Day-level prices for the next 4 months
Press a day to compare its fares
The median cached fare across this calendar is 28% higher than when tracking began on 8 Aug — $141 then versus $180 now, across 22 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 $98, on 21 Oct.
Cached day-level data for this route is sparse — 15 of 107 days priced, from 80 tracked fares. The days below are shown as found, with no cheapest-day or below-median call.
October 2026
November 2026
December 2026
January 2027
Cheapest in Nov, around $128
25% below the $170 typical fare
Cheapest round-trip fare found each month, Oslo to Barcelona, from cached prices.
Route facts
Good to know
Yes — the seasonal median for this route is around $170 round-trip. At $128 you're 25% below that, which we rate good for this route.
Across 5 months of cached-fare history, Nov 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.
We do not publish a number for this, because we cannot measure it yet.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 5 months of cached fares, Nov comes out lowest on this route. Our guide Why flight prices change covers what does move a fare.
The current cheapest fares involve a connection, ticketed under AL. We hold no nonstop fare on this route right now, which does not mean none flies — search your exact dates to see what does.
No — these are cached fares found on real searches (this one on 17 October). 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 12–13 Nov · 1 night.
Browse hotelsMissed it?
Cached fares expire. This route has a feed of its own — follow it and the next OSL → BCN drop reaches you as soon as we find it.
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