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BOS → BCN

Boston to Barcelona flights.

Live cached fares on Boston (BOS) → Barcelona (BCN), refreshed every 30 minutes. Non-stop and connecting itineraries side by side — compare airlines, times and stops, then book in one click.

Flex dates · cheapest nearby

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Read our best-time-to-book guide for BOS → BCN →Target price, booking window, weekday pattern.

See 30-day price history for BOS → BCN →Median fare, lows, and best-day patterns.

No cached fares for exactly 2026-09-25 → 2026-10-02. Showing recent fares on BOS → BCN — pick a different date in the calendar above or run a live search.

Boston → Barcelona · 6 fares12-month low · $288

Cached from Travelpayouts · filter & sort below
Showing 6 of 6 results
  • Alt date · 5 days earlier
    LL logo
    LL · LL 2626
    OutboundBOS → BCNMon, Sep 21 · 3:35 AM· 7h 5m· Non-stop
  • Alt date · 11 days later
    AC logo
    Air Canada · AC 769
    OutboundBOS → BCNTue, Oct 6 · 2:50 PM· 9h 27m· 1 stop
    ReturnBCN ← BOSWed, Oct 21 · 4:30 PM· 8h 35m· Non-stop
    $515
    total round-trip
    Live search your date →
  • Alt date · 10 days later
    FI logo
    Icelandair · FI 630
    OutboundBOS → BCNTue, Oct 6 · 12:50 AM· 10h 45m· 2 stops
    ReturnBCN ← BOSWed, Oct 21 · 4:30 PM· 8h 35m· Non-stop
    $528
    total round-trip
    Live search your date →
  • Alt date · 12 days later
    AC logo
    Air Canada · AC 8611
    OutboundBOS → BCNWed, Oct 7 · 10:50 PM· 8h 54m· 1 stop
    ReturnBCN ← BOSWed, Oct 21 · 4:30 PM· 8h 35m· Non-stop
    $552
    total round-trip
    Live search your date →
  • Alt date · 12 days later
    AC logo
    Air Canada · AC 8611
    OutboundBOS → BCNWed, Oct 7 · 10:50 PM· 8h 54m· 1 stop
    ReturnBCN ← BOSThu, Oct 22 · 4:30 PM· 8h 35m· Non-stop
    $554
    total round-trip
    Live search your date →
  • Alt date · 12 days later
    AC logo
    Air Canada · AC 767
    OutboundBOS → BCNWed, Oct 7 · 10:00 AM· 9h 31m· 1 stop
    ReturnBCN ← BOSFri, Oct 23 · 10:15 AM· 9h 41m· 1 stop
    $597
    total round-trip
    Live search your date →

Try a nearby airport

Thin routes often have more options from a neighbouring airport.

Hartford (BDL) → Barcelona (BCN)
nearby origin
Providence (PVD) → Barcelona (BCN)
nearby origin

About Boston → Barcelona

Level (IAG low-cost long-haul) runs seasonal non-stops; otherwise one-stops via MAD or LHR. AA codeshares on Level metal — same fare classes, IAG perks.

Typical non-stop flying time is around 7.5 hours. Major carriers on this route include LV, Iberia, American. Fares are usually cheapest in November, February, March — book 6–10 weeks ahead and avoid school-holiday peaks (late June–August, Christmas–New Year) for the best pricing.

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Month-by-month price guide: Boston to Barcelona

Live cheapest round-trip fare cached on BOS → BCN for each of the next 12 months. Tap any month and run a live search to confirm.

Cheapest next 12 months: October from $416 round-trip. Run a live search →
Booking window tip

Medium-haul is the classic 6-10 week booking window. Fares drift down as the departure gets closer until about 21 days out, then start climbing fast. Tuesday and Wednesday departures are typically 10-18% cheaper than Friday or Sunday.

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Where to stay

Once you’ve booked the flight, pick a Barcelona neighbourhood.

See where to stay in Barcelona →

Questions, answered

  • How long is the flight from Boston to Barcelona?

    Non-stop flights on BOS → BCN are typically around 7.5 hours. Connecting itineraries add 3–8 hours depending on the hub and layover.

  • Which airlines fly from Boston to Barcelona?

    The main carriers on this route are LV, Iberia, American. Codeshare and one-stop options add several more — the filter panel above shows every airline in the current fare set.

  • When is the cheapest time to fly from Boston to Barcelona?

    Historically the lowest fares land in November, February, March. Summer (mid-June through mid-August) and the Christmas / New Year window are always peak. Mid-week departures (Tuesday–Thursday) typically beat weekend prices by 10–20%.

  • How far ahead should I book Boston to Barcelona?

    Six to ten weeks ahead is the sweet spot for this route. Inside three weeks, fares tend to spike as airlines sell to last-minute business travellers. Award availability often opens 10–11 months out if you're booking on miles.

  • Can I book directly on destination.com?

    The Book button on each fare opens the airline or OTA (Trip.com, Kiwi, Expedia, Booking, Priceline, etc.) that's actually selling that ticket. You complete payment there at the same price you saw here — we never add a markup.

Other ways to reach Barcelona

If your plans are flexible on the origin, these alternate departure airports also serve Barcelona on the routes we track.

Other popular routes

Keep planning

Complete your Barcelona trip

Trip plannerBarcelona one-stop planTours, transfers, packages, and events for Barcelona in one place.StaysWhere to stay in BarcelonaNeighborhood-by-neighborhood picks with live nightly rates.ExperiencesThings to do in BarcelonaCurated sights, food, nightlife, and tours across every district.Getting thereCheap flights to BarcelonaUS gateway fares with the months each route bottoms out.NeighborhoodsBarcelona by districtLongform breakdowns of where locals eat, drink, and sleep.When to goBest time to visit SpainMonth-by-month verdicts on weather, crowds, and prices.
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