Cheap flights from Boston to Barcelona from $781 BOS → BCN
Logan International Airport (BOS) → Barcelona-El Prat Airport (BCN)
The cheapest return found recently is $781 with Air Canada, 1 Nov 2027 – 6 Nov 2027, found 2 days ago.
- Cheapest return found recently
- $781, 1 Nov 2027 to 6 Nov 2027
- Usual return price
- $821 to $1,052
- Cheapest month to fly
- November 2027, return fares from $781 found in the last 7 days
Return
The cheapest return fare on each of 3 departure dates is usually $821 to $1,052.
Cheapest return found recently
$781
1 Nov 2027 – 6 Nov 2027 · Air Canada
Logan International Airport (BOS) → Barcelona-El Prat Airport (BCN)
Leaves 5:30 a.m. · Return leaves 2:55 p.m. · 34 h of travel, both ways together
out 2 stops, back 1 stop
found 2 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$781 1 Nov 2027 – 6 Nov 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 43 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $273 to $1,243.
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 21 Nov to 1 Nov 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 5-night return fares leaving within 3 days of 1 Nov 2027 to compare.
Every date we hold
3 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 21 Nov – 25 Nov | $860 | United Airlines | Logan International Airport (BOS) → Barcelona-El Prat Airport (BCN) | out 2 stops, back 1 stop | found 2 days ago | See prices for these dates |
| 18 Dec – 27 Dec | $1,243 | Azores Airlines | Logan International Airport (BOS) → Barcelona-El Prat Airport (BCN) | out 2 stops, back 2 stops | found 5 days ago | See prices for these dates |
| 1 Nov 2027 – 6 Nov 2027 | $781 | Air Canada | Logan International Airport (BOS) → Barcelona-El Prat Airport (BCN) | out 2 stops, back 1 stop | found 2 days ago | See prices for these dates |
Which month looks cheapest?
November 2027 is the cheapest month — from $781.
Airlines on the cheapest dates: United Airlines, Azores Airlines, Air Canada.
Premium cabin fares from Boston 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 1 Nov 2027 – 6 Nov 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Boston to Barcelona?
Return
Fares 30 to 59 days before departure were typically 12% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (43 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 |
|---|---|---|---|---|
| 0–6 days | $606 | $569 | +13% | 15 |
| 7–13 days | $657 | $457 | +23% | 21 |
| 14–29 days | $630 | $519 | +18% | 24 |
| 30–59 days | $535 | $273 | Cheapest seen | 42 |
| 60–89 days | $944 | $848 | +76% | 18 |
Live price for these dates
The cheapest return found recently is for 1 Nov 2027 – 6 Nov 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 Boston to Barcelona?
The cheapest return found recently is $781 with Air Canada, 1 Nov 2027 to 6 Nov 2027, found 2 days ago. The cheapest return fare on each of 3 departure dates is usually $821 to $1,052.
What is the cheapest month to fly from Boston to Barcelona?
November 2027 is the cheapest month for a return, from $781, 1 Nov 2027 to 6 Nov 2027, found 2 days ago.
How far ahead should I book a flight from Boston to Barcelona?
In 43 days of prices between 24 Sept and 11 Nov, return fares 30 to 59 days before departure were typically 12% lower than 0 to 6 days before departure.
Which airlines have the cheapest flights from Boston to Barcelona?
Between 21 Nov and 1 Nov 2027, United Airlines has the cheapest return on 1 of the 3 departure dates we hold, Azores Airlines on 1 and Air Canada 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