Cheap flights from Boston to Barcelona
The cheapest round trip from Boston to Barcelona that travelers found recently is $519 with a carry-on: a $519 fare on TAP Air Portugal, which usually includes a carry-on. It leaves Mon, Nov 9 and comes back Mon, Nov 16.
Live prices for Mon, Nov 9 to Mon, Nov 16
Cheapest trips travelers found recently
| Leave | Return | Airline | Airports | Stops | Fare | Carry-on (est.) | Total | Live prices |
|---|---|---|---|---|---|---|---|---|
| Mon, Nov 9 | Mon, Nov 16 | TAP Air Portugal | BOS → BCN | 1 stop | $519 | Included | $519 | Live price |
| Mon, Nov 9 | Tue, Nov 17 | TAP Air Portugal | BOS → BCN | 1 stop | $521 | Included | $521 | Live price |
| Tue, Nov 17 | Mon, Nov 23 | TAP Air Portugal | BOS → BCN | 1 stop | $532 | Included | $532 | Live price |
| Sun, Nov 15 | Sat, Nov 21 | TAP Air Portugal | BOS → BCN | 1 stop | $535 | Included | $535 | Live price |
| Thu, Oct 15 | Thu, Oct 22 | United | BOS → BCN | 1 stop | $569 | Included | $569 | Live price |
| Mon, Nov 9 | Wed, Nov 18 | TAP Air Portugal | BOS → BCN | 1 stop | $574 | Included | $574 | Live price |
| Mon, Nov 16 | Mon, Nov 23 | TAP Air Portugal | BOS → BCN | 1 stop | $575 | Included | $575 | Live price |
| Tue, Nov 10 | Tue, Nov 17 | TAP Air Portugal | BOS → BCN | 1 stop | $578 | Included | $578 | Live price |
| Thu, Dec 3 | Fri, Dec 11 | TAP Air Portugal | BOS → BCN | 1 stop | $583 | Included | $583 | Live price |
| Mon, Oct 26 | Mon, Nov 2 | TAP Air Portugal | BOS → BCN | 2 stops | $657 | Included | $657 | Live price |
Round-trip prices per person, from real fares travelers found in the last few days. Carry-on fees are our estimate for each airline, both ways. Prices change fast: check the live price before you book.
Cheapest month to fly
| Month | Cheapest trip | From | Live prices |
|---|---|---|---|
| October 2026 | Thu, Oct 15 to Thu, Oct 22, 7 nights | $569 | Live price |
| November 2026 | Mon, Nov 9 to Mon, Nov 16, 7 nights | $519 | Live price |
| December 2026 | Thu, Dec 3 to Fri, Dec 11, 8 nights | $583 | Live price |
Bag fees on this route
What the airlines flying Boston to Barcelona usually charge for one bag each way. Budget airlines often sell the cheapest fares and charge the most for bags, so compare the total, not the fare.
| Airline | Carry-on, each way | Checked bag, each way |
|---|---|---|
| Air Canada | Included | Included |
| British Airways | Included | Included |
| Icelandair | Included | Included |
| Swiss | Included | Included |
| TAP Air Portugal | Included | Included |
| United | Included | Included |
Our estimates: fees depend on the fare type and when you pay. Check the airline's own price when you book.
How these prices work
These are real round-trip fares that travelers found on Aviasales recently, not a live search, so they can change or sell out. Dipt adds an estimate of each airline's carry-on fee, so a cheap fare with expensive bags doesn't look cheaper than it is. "Live price" opens Dipt's live flight search for those dates, where you book with the airline or travel site you pick. Dipt may earn a commission when you book, at no extra cost to you (how Dipt makes money).
Not sure where to go? Tell Dipt your budget and vibe and it finds the trip.
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