Cheap flights from San Francisco to Barcelona from $431 SFO → BCN
San Francisco International Airport (SFO) → Barcelona-El Prat Airport (BCN)
The cheapest return found recently is $668 with SAS Scandinavian, 12 Sept 2027 – 4 Oct 2027, found 2 days ago. The cheapest one-way found recently is $431 with Air Canada, 22 Mar 2027, found 6 days ago.
- Cheapest one-way found recently
- $431, found 6 days ago
- Cheapest return found recently
- $668, 12 Sept 2027 to 4 Oct 2027
- Usual return price
- $704 to $1,071
- Cheapest month to fly
- September 2027, return fares from $668 found in the last 7 days
- Airlines with nonstop flights
- Lufthansa
Return
The cheapest return fare on each of 3 departure dates is usually $704 to $1,071.
Cheapest return found recently
$668
12 Sept 2027 – 4 Oct 2027 · SAS Scandinavian
San Francisco International Airport (SFO) → Barcelona-El Prat Airport (BCN)
Leaves 4:35 p.m. · Return leaves 7:00 p.m. · 60 h 40 min of travel, both ways together
out 1 stop, back 1 stop · via Copenhagen Airport (CPH) · overnight connection · 19 h connection
found 2 days ago
Cheapest nonstop return
$1,208
12 Sept 2027 – 4 Oct 2027 · United Airlines
San Francisco International Airport (SFO) → Barcelona-El Prat Airport (BCN)
Leaves 5:50 p.m. · Return leaves 4:25 a.m. · 23 h 45 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Found recently, and the cheapest we hold
$668 12 Sept 2027 – 4 Oct 2027found 2 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 44 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $544 to $1,450.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 3 departure dates from 19 Nov to 12 Sept 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 22-night return fares leaving within 3 days of 12 Sept 2027 to compare.
Every date we hold
22 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 19 Nov – 3 Dec | $1,403 | Aer Lingus | San Francisco International Airport (SFO) → Barcelona-El Prat Airport (BCN) | out 3 stops, back 2 stops | found 2 days ago | See prices for these dates |
| 28 Mar 2027 – 15 Apr 2027 | $739 | SAS Scandinavian | San Francisco International Airport (SFO) → Barcelona-El Prat Airport (BCN) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 12 Sept 2027 – 4 Oct 2027 | $668 | SAS Scandinavian | San Francisco International Airport (SFO) → Barcelona-El Prat Airport (BCN) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
Which month looks cheapest?
September 2027 is the cheapest month — from $668.
Airlines on the cheapest dates: SAS Scandinavian, Aer Lingus.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$431
22 Mar 2027 · Air Canada
San Francisco International Airport (SFO) → Barcelona-El Prat Airport (BCN)
Leaves 6:30 a.m. · 33 h 40 min trip
3 stops
found 6 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$431 22 Mar 2027found 6 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 29 days, 27 Sept to 11 Nov, the cheapest one-way we saw each day was $204 to $407.
At $431, the cheapest one-way found recently is above that range.
29 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 22 Mar 2027 to compare.
Every date we hold
1 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 22 Mar 2027 | $431 | Air Canada | San Francisco International Airport (SFO) → Barcelona-El Prat Airport (BCN) | 3 stops | found 6 days ago | Open this trip |
Airlines on the cheapest dates: Air Canada.
Premium cabin fares from San Francisco to Barcelona
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 12 Sept 2027 – 4 Oct 2027 in another cabin: Premium economy · Business · First
Today's prices for 22 Mar 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for San Francisco to Barcelona?
Return
Fares 90 to 179 days before departure were typically 12% lower than 14 to 29 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (44 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 14–29 days | $755 | $544 | +14% | 33 |
| 30–59 days | $812 | $742 | +23% | 22 |
| 60–89 days | $706 | $578 | +7% | 22 |
| 90–179 days | $663 | $606 | Cheapest seen | 22 |
| 180+ days | $717 | $668 | +8% | 32 |
One-way
Not enough history yet: in 29 days of one-way prices, 27 Sept to 11 Nov, fewer than 3 booking ranges had prices on 7 days or more.
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
San Jose → Barcelona
67 km from San Francisco
$1,213
$545 more than flying from San Francisco
12 Sept 2027 – 4 Oct 2027 · SJC → BCN · out 1 stop, back 1 stop
found 2 days ago
Oakland → Barcelona
13 km from San Francisco
$4,030
$3,362 more than flying from San Francisco
19 Nov – 3 Dec · OAK → BCN · out 2 stops, back 1 stop
found 2 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
San Jose → Barcelona
67 km from San Francisco
$625
$194 more than flying from San Francisco
22 Mar 2027 · SJC → BCN · 3 stops
found 6 days ago
Oakland → Barcelona
13 km from San Francisco
$887
$456 more than flying from San Francisco
22 Mar 2027 · OAK → BCN · 2 stops
found 6 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 12 Sept 2027 – 4 Oct 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from San Francisco to Barcelona?
The cheapest return found recently is $668 with SAS Scandinavian, 12 Sept 2027 to 4 Oct 2027, found 2 days ago. The cheapest return fare on each of 3 departure dates is usually $704 to $1,071.
How much is a one-way flight from San Francisco to Barcelona?
The cheapest one-way found recently is $431 with Air Canada, 22 Mar 2027, found 6 days ago.
What is the cheapest month to fly from San Francisco to Barcelona?
September 2027 is the cheapest month for a return, from $668, 12 Sept 2027 to 4 Oct 2027, found 2 days ago.
How far ahead should I book a flight from San Francisco to Barcelona?
In 44 days of prices between 24 Sept and 11 Nov, return fares 90 to 179 days before departure were typically 12% lower than 14 to 29 days before departure.
Is there a direct flight from San Francisco to Barcelona?
Yes, the cheapest nonstop return found recently is $1,208 with United Airlines, 12 Sept 2027 to 4 Oct 2027, found 2 days ago.
How long is the flight from San Francisco to Barcelona?
The cheapest one-way found recently, with Air Canada on 22 Mar 2027, takes 33 h 40 min with 3 stops.
Which airlines have the cheapest flights from San Francisco to Barcelona?
Between 19 Nov and 12 Sept 2027, SAS Scandinavian has the cheapest return on 2 of the 3 departure dates we hold, and Aer Lingus on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work