Travel with Axel,
get the best price.

Route overview: Washington, DC to Barcelona (BCN) flight deals

Dulles → Barcelona

Dec 3, 2026 · choose your return date

IAD → BCN1 adulteconomyOne way and round trips

28 flight options · 4 airlines

Choose your return date

One-way flights and round trips by duration. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

December 2026

Dec 3, 2026 · One wayAer LingusUp to 1 stop each way$435.00 Dec 3, 2026 · One wayUnited AirlinesNonstop$575.00 Dec 3, 2026 – Dec 5, 2026 · 2 nightsAer Lingus / United AirlinesUp to 1 stop each way$762.50 Dec 3, 2026 – Dec 5, 2026 · 2 nightsUnited AirlinesNonstop$875.00 Dec 3, 2026 – Dec 6, 2026 · 3 nightsAer Lingus / United AirlinesUp to 1 stop each way$762.50 Dec 3, 2026 – Dec 6, 2026 · 3 nightsUnited AirlinesNonstop$875.00 Dec 3, 2026 – Dec 7, 2026 · 4 nightsAer Lingus / Swiss International Air LinesUp to 1 stop each way$717.50 Dec 3, 2026 – Dec 7, 2026 · 4 nightsUnited AirlinesNonstop$875.00 Dec 3, 2026 – Dec 8, 2026 · 5 nightsAer Lingus / United AirlinesUp to 1 stop each way$762.50 Dec 3, 2026 – Dec 8, 2026 · 5 nightsUnited AirlinesNonstop$875.00 Dec 3, 2026 – Dec 9, 2026 · 6 nightsAer Lingus / United AirlinesUp to 1 stop each way$762.50 Dec 3, 2026 – Dec 9, 2026 · 6 nightsUnited AirlinesNonstop$875.00 Dec 3, 2026 – Dec 10, 2026 · 7 nightsAer Lingus / Air CanadaUp to 1 stop each way$687.50 Dec 3, 2026 – Dec 10, 2026 · 7 nightsUnited AirlinesNonstop$875.00 Dec 3, 2026 – Dec 11, 2026 · 8 nightsAer Lingus / Air CanadaUp to 1 stop each way$687.50 Dec 3, 2026 – Dec 11, 2026 · 8 nightsUnited AirlinesNonstop$875.00 Dec 3, 2026 – Dec 12, 2026 · 9 nightsAer Lingus / United AirlinesUp to 1 stop each way$762.50 Dec 3, 2026 – Dec 12, 2026 · 9 nightsUnited AirlinesNonstop$875.00 Dec 3, 2026 – Dec 13, 2026 · 10 nightsAer Lingus / United AirlinesUp to 1 stop each way$762.50 Dec 3, 2026 – Dec 13, 2026 · 10 nightsUnited AirlinesNonstop$875.00 Dec 3, 2026 – Dec 14, 2026 · 11 nightsAer Lingus / Swiss International Air LinesUp to 1 stop each way$717.50 Dec 3, 2026 – Dec 14, 2026 · 11 nightsUnited AirlinesNonstop$875.00 Dec 3, 2026 – Dec 15, 2026 · 12 nightsAer Lingus / United AirlinesUp to 1 stop each way$762.50 Dec 3, 2026 – Dec 15, 2026 · 12 nightsUnited AirlinesNonstop$875.00 Dec 3, 2026 – Dec 16, 2026 · 13 nightsAer Lingus / United AirlinesUp to 1 stop each way$762.50 Dec 3, 2026 – Dec 16, 2026 · 13 nightsUnited AirlinesNonstop$875.00 Dec 3, 2026 – Dec 17, 2026 · 14 nightsAer Lingus / Air CanadaUp to 1 stop each way$687.50 Dec 3, 2026 – Dec 17, 2026 · 14 nightsUnited AirlinesNonstop$875.00

Flights for your trip

  1. Thu, Dec 3 · One way

    Aer Lingus
    5:15 pmIAD
    11h 35m
    DUB · 2h 5m
    10:50 am+1BCN

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  2. Thu, Dec 3 · One way

    United Airlines
    6:50 pmIAD
    8h 10m
    Nonstop
    9:00 am+1BCN

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  3. Thu, Dec 3 – Sat, Dec 5

    Aer Lingus
    5:15 pmIAD
    11h 35m
    DUB · 2h 5m
    10:50 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  4. Thu, Dec 3 – Sat, Dec 5

    United Airlines
    6:50 pmIAD
    8h 10m
    Nonstop
    9:00 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  5. Thu, Dec 3 – Sun, Dec 6

    Aer Lingus
    5:15 pmIAD
    11h 35m
    DUB · 2h 5m
    10:50 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  6. Thu, Dec 3 – Sun, Dec 6

    United Airlines
    6:50 pmIAD
    8h 10m
    Nonstop
    9:00 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  7. Thu, Dec 3 – Mon, Dec 7

    Aer Lingus
    5:15 pmIAD
    11h 35m
    DUB · 2h 5m
    10:50 am+1BCN
    Swiss International Air Lines
    9:55 amBCN
    13h 5m
    ZRH · 1h 30m
    5:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  8. Thu, Dec 3 – Mon, Dec 7

    United Airlines
    6:50 pmIAD
    8h 10m
    Nonstop
    9:00 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  9. Thu, Dec 3 – Tue, Dec 8

    Aer Lingus
    5:15 pmIAD
    11h 35m
    DUB · 2h 5m
    10:50 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  10. Thu, Dec 3 – Tue, Dec 8

    United Airlines
    6:50 pmIAD
    8h 10m
    Nonstop
    9:00 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  11. Thu, Dec 3 – Wed, Dec 9

    Aer Lingus
    5:15 pmIAD
    11h 35m
    DUB · 2h 5m
    10:50 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  12. Thu, Dec 3 – Wed, Dec 9

    United Airlines
    6:50 pmIAD
    8h 10m
    Nonstop
    9:00 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  13. Thu, Dec 3 – Fri, Dec 11

    Aer Lingus
    5:15 pmIAD
    11h 35m
    DUB · 2h 5m
    10:50 am+1BCN
    Air Canada
    1:35 pmBCN
    12h 48m
    YUL · 2h 15m
    8:23 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  14. Thu, Dec 3 – Fri, Dec 11

    United Airlines
    6:50 pmIAD
    8h 10m
    Nonstop
    9:00 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  15. Thu, Dec 3 – Sat, Dec 12

    Aer Lingus
    5:15 pmIAD
    11h 35m
    DUB · 2h 5m
    10:50 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  16. Thu, Dec 3 – Sat, Dec 12

    United Airlines
    6:50 pmIAD
    8h 10m
    Nonstop
    9:00 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  17. Thu, Dec 3 – Sun, Dec 13

    Aer Lingus
    5:15 pmIAD
    11h 35m
    DUB · 2h 5m
    10:50 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  18. Thu, Dec 3 – Sun, Dec 13

    United Airlines
    6:50 pmIAD
    8h 10m
    Nonstop
    9:00 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  19. Thu, Dec 3 – Mon, Dec 14

    Aer Lingus
    5:15 pmIAD
    11h 35m
    DUB · 2h 5m
    10:50 am+1BCN
    Swiss International Air Lines
    9:55 amBCN
    13h 5m
    ZRH · 1h 30m
    5:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  20. Thu, Dec 3 – Mon, Dec 14

    United Airlines
    6:50 pmIAD
    8h 10m
    Nonstop
    9:00 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  21. Thu, Dec 3 – Tue, Dec 15

    Aer Lingus
    5:15 pmIAD
    11h 35m
    DUB · 2h 5m
    10:50 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  22. Thu, Dec 3 – Tue, Dec 15

    United Airlines
    6:50 pmIAD
    8h 10m
    Nonstop
    9:00 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  23. Thu, Dec 3 – Thu, Dec 17

    Aer Lingus
    5:15 pmIAD
    11h 35m
    DUB · 2h 5m
    10:50 am+1BCN
    Air Canada
    1:35 pmBCN
    12h 48m
    YUL · 2h 15m
    8:23 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  24. Thu, Dec 3 – Thu, Dec 17

    United Airlines
    6:50 pmIAD
    8h 10m
    Nonstop
    9:00 am+1BCN
    United Airlines
    10:30 amBCN
    9h 30m
    Nonstop
    2:00 pmIAD

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

Swipe to see 23 more recent deals.

1 of 24

Make this trip yours

IAD ⇄ BCN

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, United Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

Explore this route

All dates for this routeDec 2, 2026 · Return optionsDec 4, 2026 · Return optionsHotels in Barcelona with Axel
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, issued at the time shown. To book or select flights, follow that row's price link; it keeps the exact dates and travelers.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-03 · one wayUnited AirlinesUA992Axel-exclusive $575.002026-10-29T01:05:49Z
2026-12-03 · one wayAer LingusEI116 + EI562Axel-exclusive $435.002026-10-29T01:05:49Z
2026-12-03 → 2026-12-05United AirlinesUA992 / UA991Axel-exclusive $875.002026-10-29T01:05:49Z
2026-12-03 → 2026-12-05Aer Lingus / United AirlinesEI116 + EI562 / UA991Axel-exclusive $762.502026-10-29T01:05:49Z
2026-12-03 → 2026-12-06United AirlinesUA992 / UA991Axel-exclusive $875.002026-10-29T01:05:49Z
2026-12-03 → 2026-12-06Aer Lingus / United AirlinesEI116 + EI562 / UA991Axel-exclusive $762.502026-10-29T01:05:49Z
2026-12-03 → 2026-12-07United AirlinesUA992 / UA991Axel-exclusive $875.002026-10-29T01:05:49Z
2026-12-03 → 2026-12-07Aer Lingus / Swiss International Air LinesEI116 + EI562 / LX1953 + LX72Axel-exclusive $717.502026-10-29T01:05:49Z
2026-12-03 → 2026-12-08United AirlinesUA992 / UA991Axel-exclusive $875.002026-10-29T01:05:49Z
2026-12-03 → 2026-12-08Aer Lingus / United AirlinesEI116 + EI562 / UA991Axel-exclusive $762.502026-10-29T01:05:49Z
2026-12-03 → 2026-12-09United AirlinesUA992 / UA991Axel-exclusive $875.002026-10-29T01:05:49Z
2026-12-03 → 2026-12-09Aer Lingus / United AirlinesEI116 + EI562 / UA991Axel-exclusive $762.502026-10-29T01:05:49Z
2026-12-03 → 2026-12-10United AirlinesUA992 / UA991Axel-exclusive $875.002026-10-29T01:05:49Z
2026-12-03 → 2026-12-10Aer Lingus / Air CanadaEI116 + EI562 / AC823 + AC8725Axel-exclusive $687.502026-10-29T01:05:49Z
2026-12-03 → 2026-12-11United AirlinesUA992 / UA991Axel-exclusive $875.002026-10-29T01:05:49Z
2026-12-03 → 2026-12-11Aer Lingus / Air CanadaEI116 + EI562 / AC823 + AC8725Axel-exclusive $687.502026-10-29T01:05:49Z
2026-12-03 → 2026-12-12United AirlinesUA992 / UA991Axel-exclusive $875.002026-10-29T01:05:49Z
2026-12-03 → 2026-12-12Aer Lingus / United AirlinesEI116 + EI562 / UA991Axel-exclusive $762.502026-10-29T01:05:49Z
2026-12-03 → 2026-12-13United AirlinesUA992 / UA991Axel-exclusive $875.002026-10-29T01:05:49Z
2026-12-03 → 2026-12-13Aer Lingus / United AirlinesEI116 + EI562 / UA991Axel-exclusive $762.502026-10-29T01:05:49Z
2026-12-03 → 2026-12-14United AirlinesUA992 / UA991Axel-exclusive $875.002026-10-29T01:05:49Z
2026-12-03 → 2026-12-14Aer Lingus / Swiss International Air LinesEI116 + EI562 / LX1953 + LX72Axel-exclusive $717.502026-10-29T01:05:49Z
2026-12-03 → 2026-12-15United AirlinesUA992 / UA991Axel-exclusive $875.002026-10-29T01:05:49Z
2026-12-03 → 2026-12-15Aer Lingus / United AirlinesEI116 + EI562 / UA991Axel-exclusive $762.502026-10-29T01:05:49Z
2026-12-03 → 2026-12-16United AirlinesUA992 / UA991Axel-exclusive $875.002026-10-29T01:05:49Z
2026-12-03 → 2026-12-16Aer Lingus / United AirlinesEI116 + EI562 / UA991Axel-exclusive $762.502026-10-29T01:05:49Z
2026-12-03 → 2026-12-17United AirlinesUA992 / UA991Axel-exclusive $875.002026-10-29T01:05:49Z
2026-12-03 → 2026-12-17Aer Lingus / Air CanadaEI116 + EI562 / AC823 + AC8725Axel-exclusive $687.502026-10-29T01:05:49Z

Route overview: Washington, DC to Barcelona (BCN) flight deals

2026-12-03 · one way · Axel-exclusive $435.00

  • Aer Lingus EI116 / EI562: IAD 2026-12-03 17:15:00 → BCN 2026-12-04 10:50:00; 1 stop(s) via DUB; 695 minutes. Local airport times.
    • EI116: IAD 2026-12-03 17:15:00 → DUB 2026-12-04 05:05:00; layover at DUB: 125 minutes.
    • EI562: DUB 2026-12-04 07:10:00 → BCN 2026-12-04 10:50:00.

2026-12-03 · one way · Axel-exclusive $575.00

  • United Airlines UA992: IAD 2026-12-03 18:50:00 → BCN 2026-12-04 09:00:00; nonstop; 490 minutes. Local airport times.

2026-12-03 → 2026-12-05 · Axel-exclusive $762.50

  • Aer Lingus EI116 / EI562: IAD 2026-12-03 17:15:00 → BCN 2026-12-04 10:50:00; 1 stop(s) via DUB; 695 minutes. Local airport times.
    • EI116: IAD 2026-12-03 17:15:00 → DUB 2026-12-04 05:05:00; layover at DUB: 125 minutes.
    • EI562: DUB 2026-12-04 07:10:00 → BCN 2026-12-04 10:50:00.
  • United Airlines UA991: BCN 2026-12-05 10:30:00 → IAD 2026-12-05 14:00:00; nonstop; 570 minutes. Local airport times.

2026-12-03 → 2026-12-05 · Axel-exclusive $875.00

  • United Airlines UA992: IAD 2026-12-03 18:50:00 → BCN 2026-12-04 09:00:00; nonstop; 490 minutes. Local airport times.
  • United Airlines UA991: BCN 2026-12-05 10:30:00 → IAD 2026-12-05 14:00:00; nonstop; 570 minutes. Local airport times.

2026-12-03 → 2026-12-06 · Axel-exclusive $762.50

  • Aer Lingus EI116 / EI562: IAD 2026-12-03 17:15:00 → BCN 2026-12-04 10:50:00; 1 stop(s) via DUB; 695 minutes. Local airport times.
    • EI116: IAD 2026-12-03 17:15:00 → DUB 2026-12-04 05:05:00; layover at DUB: 125 minutes.
    • EI562: DUB 2026-12-04 07:10:00 → BCN 2026-12-04 10:50:00.
  • United Airlines UA991: BCN 2026-12-06 10:30:00 → IAD 2026-12-06 14:00:00; nonstop; 570 minutes. Local airport times.

2026-12-03 → 2026-12-06 · Axel-exclusive $875.00

  • United Airlines UA992: IAD 2026-12-03 18:50:00 → BCN 2026-12-04 09:00:00; nonstop; 490 minutes. Local airport times.
  • United Airlines UA991: BCN 2026-12-06 10:30:00 → IAD 2026-12-06 14:00:00; nonstop; 570 minutes. Local airport times.

2026-12-03 → 2026-12-07 · Axel-exclusive $717.50

  • Aer Lingus EI116 / EI562: IAD 2026-12-03 17:15:00 → BCN 2026-12-04 10:50:00; 1 stop(s) via DUB; 695 minutes. Local airport times.
    • EI116: IAD 2026-12-03 17:15:00 → DUB 2026-12-04 05:05:00; layover at DUB: 125 minutes.
    • EI562: DUB 2026-12-04 07:10:00 → BCN 2026-12-04 10:50:00.
  • Swiss International Air Lines LX1953 / LX72: BCN 2026-12-07 09:55:00 → IAD 2026-12-07 17:00:00; 1 stop(s) via ZRH; 785 minutes. Local airport times.
    • LX1953: BCN 2026-12-07 09:55:00 → ZRH 2026-12-07 11:45:00; layover at ZRH: 90 minutes.
    • LX72: ZRH 2026-12-07 13:15:00 → IAD 2026-12-07 17:00:00.

2026-12-03 → 2026-12-07 · Axel-exclusive $875.00

  • United Airlines UA992: IAD 2026-12-03 18:50:00 → BCN 2026-12-04 09:00:00; nonstop; 490 minutes. Local airport times.
  • United Airlines UA991: BCN 2026-12-07 10:30:00 → IAD 2026-12-07 14:00:00; nonstop; 570 minutes. Local airport times.

2026-12-03 → 2026-12-08 · Axel-exclusive $762.50

  • Aer Lingus EI116 / EI562: IAD 2026-12-03 17:15:00 → BCN 2026-12-04 10:50:00; 1 stop(s) via DUB; 695 minutes. Local airport times.
    • EI116: IAD 2026-12-03 17:15:00 → DUB 2026-12-04 05:05:00; layover at DUB: 125 minutes.
    • EI562: DUB 2026-12-04 07:10:00 → BCN 2026-12-04 10:50:00.
  • United Airlines UA991: BCN 2026-12-08 10:30:00 → IAD 2026-12-08 14:00:00; nonstop; 570 minutes. Local airport times.

2026-12-03 → 2026-12-08 · Axel-exclusive $875.00

  • United Airlines UA992: IAD 2026-12-03 18:50:00 → BCN 2026-12-04 09:00:00; nonstop; 490 minutes. Local airport times.
  • United Airlines UA991: BCN 2026-12-08 10:30:00 → IAD 2026-12-08 14:00:00; nonstop; 570 minutes. Local airport times.

2026-12-03 → 2026-12-09 · Axel-exclusive $762.50

  • Aer Lingus EI116 / EI562: IAD 2026-12-03 17:15:00 → BCN 2026-12-04 10:50:00; 1 stop(s) via DUB; 695 minutes. Local airport times.
    • EI116: IAD 2026-12-03 17:15:00 → DUB 2026-12-04 05:05:00; layover at DUB: 125 minutes.
    • EI562: DUB 2026-12-04 07:10:00 → BCN 2026-12-04 10:50:00.
  • United Airlines UA991: BCN 2026-12-09 10:30:00 → IAD 2026-12-09 14:00:00; nonstop; 570 minutes. Local airport times.

2026-12-03 → 2026-12-09 · Axel-exclusive $875.00

  • United Airlines UA992: IAD 2026-12-03 18:50:00 → BCN 2026-12-04 09:00:00; nonstop; 490 minutes. Local airport times.
  • United Airlines UA991: BCN 2026-12-09 10:30:00 → IAD 2026-12-09 14:00:00; nonstop; 570 minutes. Local airport times.

2026-12-03 → 2026-12-11 · Axel-exclusive $687.50

  • Aer Lingus EI116 / EI562: IAD 2026-12-03 17:15:00 → BCN 2026-12-04 10:50:00; 1 stop(s) via DUB; 695 minutes. Local airport times.
    • EI116: IAD 2026-12-03 17:15:00 → DUB 2026-12-04 05:05:00; layover at DUB: 125 minutes.
    • EI562: DUB 2026-12-04 07:10:00 → BCN 2026-12-04 10:50:00.
  • Air Canada AC823 / AC8725: BCN 2026-12-11 13:35:00 → IAD 2026-12-11 20:23:00; 1 stop(s) via YUL; 768 minutes. Local airport times.
    • AC823: BCN 2026-12-11 13:35:00 → YUL 2026-12-11 16:10:00; layover at YUL: 135 minutes.
    • AC8725: YUL 2026-12-11 18:25:00 → IAD 2026-12-11 20:23:00.

2026-12-03 → 2026-12-11 · Axel-exclusive $875.00

  • United Airlines UA992: IAD 2026-12-03 18:50:00 → BCN 2026-12-04 09:00:00; nonstop; 490 minutes. Local airport times.
  • United Airlines UA991: BCN 2026-12-11 10:30:00 → IAD 2026-12-11 14:00:00; nonstop; 570 minutes. Local airport times.

2026-12-03 → 2026-12-12 · Axel-exclusive $762.50

  • Aer Lingus EI116 / EI562: IAD 2026-12-03 17:15:00 → BCN 2026-12-04 10:50:00; 1 stop(s) via DUB; 695 minutes. Local airport times.
    • EI116: IAD 2026-12-03 17:15:00 → DUB 2026-12-04 05:05:00; layover at DUB: 125 minutes.
    • EI562: DUB 2026-12-04 07:10:00 → BCN 2026-12-04 10:50:00.
  • United Airlines UA991: BCN 2026-12-12 10:30:00 → IAD 2026-12-12 14:00:00; nonstop; 570 minutes. Local airport times.

2026-12-03 → 2026-12-12 · Axel-exclusive $875.00

  • United Airlines UA992: IAD 2026-12-03 18:50:00 → BCN 2026-12-04 09:00:00; nonstop; 490 minutes. Local airport times.
  • United Airlines UA991: BCN 2026-12-12 10:30:00 → IAD 2026-12-12 14:00:00; nonstop; 570 minutes. Local airport times.

2026-12-03 → 2026-12-13 · Axel-exclusive $762.50

  • Aer Lingus EI116 / EI562: IAD 2026-12-03 17:15:00 → BCN 2026-12-04 10:50:00; 1 stop(s) via DUB; 695 minutes. Local airport times.
    • EI116: IAD 2026-12-03 17:15:00 → DUB 2026-12-04 05:05:00; layover at DUB: 125 minutes.
    • EI562: DUB 2026-12-04 07:10:00 → BCN 2026-12-04 10:50:00.
  • United Airlines UA991: BCN 2026-12-13 10:30:00 → IAD 2026-12-13 14:00:00; nonstop; 570 minutes. Local airport times.

2026-12-03 → 2026-12-13 · Axel-exclusive $875.00

  • United Airlines UA992: IAD 2026-12-03 18:50:00 → BCN 2026-12-04 09:00:00; nonstop; 490 minutes. Local airport times.
  • United Airlines UA991: BCN 2026-12-13 10:30:00 → IAD 2026-12-13 14:00:00; nonstop; 570 minutes. Local airport times.

2026-12-03 → 2026-12-14 · Axel-exclusive $717.50

  • Aer Lingus EI116 / EI562: IAD 2026-12-03 17:15:00 → BCN 2026-12-04 10:50:00; 1 stop(s) via DUB; 695 minutes. Local airport times.
    • EI116: IAD 2026-12-03 17:15:00 → DUB 2026-12-04 05:05:00; layover at DUB: 125 minutes.
    • EI562: DUB 2026-12-04 07:10:00 → BCN 2026-12-04 10:50:00.
  • Swiss International Air Lines LX1953 / LX72: BCN 2026-12-14 09:55:00 → IAD 2026-12-14 17:00:00; 1 stop(s) via ZRH; 785 minutes. Local airport times.
    • LX1953: BCN 2026-12-14 09:55:00 → ZRH 2026-12-14 11:45:00; layover at ZRH: 90 minutes.
    • LX72: ZRH 2026-12-14 13:15:00 → IAD 2026-12-14 17:00:00.

2026-12-03 → 2026-12-14 · Axel-exclusive $875.00

  • United Airlines UA992: IAD 2026-12-03 18:50:00 → BCN 2026-12-04 09:00:00; nonstop; 490 minutes. Local airport times.
  • United Airlines UA991: BCN 2026-12-14 10:30:00 → IAD 2026-12-14 14:00:00; nonstop; 570 minutes. Local airport times.

2026-12-03 → 2026-12-15 · Axel-exclusive $762.50

  • Aer Lingus EI116 / EI562: IAD 2026-12-03 17:15:00 → BCN 2026-12-04 10:50:00; 1 stop(s) via DUB; 695 minutes. Local airport times.
    • EI116: IAD 2026-12-03 17:15:00 → DUB 2026-12-04 05:05:00; layover at DUB: 125 minutes.
    • EI562: DUB 2026-12-04 07:10:00 → BCN 2026-12-04 10:50:00.
  • United Airlines UA991: BCN 2026-12-15 10:30:00 → IAD 2026-12-15 14:00:00; nonstop; 570 minutes. Local airport times.

2026-12-03 → 2026-12-15 · Axel-exclusive $875.00

  • United Airlines UA992: IAD 2026-12-03 18:50:00 → BCN 2026-12-04 09:00:00; nonstop; 490 minutes. Local airport times.
  • United Airlines UA991: BCN 2026-12-15 10:30:00 → IAD 2026-12-15 14:00:00; nonstop; 570 minutes. Local airport times.

2026-12-03 → 2026-12-17 · Axel-exclusive $687.50

  • Aer Lingus EI116 / EI562: IAD 2026-12-03 17:15:00 → BCN 2026-12-04 10:50:00; 1 stop(s) via DUB; 695 minutes. Local airport times.
    • EI116: IAD 2026-12-03 17:15:00 → DUB 2026-12-04 05:05:00; layover at DUB: 125 minutes.
    • EI562: DUB 2026-12-04 07:10:00 → BCN 2026-12-04 10:50:00.
  • Air Canada AC823 / AC8725: BCN 2026-12-17 13:35:00 → IAD 2026-12-17 20:23:00; 1 stop(s) via YUL; 768 minutes. Local airport times.
    • AC823: BCN 2026-12-17 13:35:00 → YUL 2026-12-17 16:10:00; layover at YUL: 135 minutes.
    • AC8725: YUL 2026-12-17 18:25:00 → IAD 2026-12-17 20:23:00.

2026-12-03 → 2026-12-17 · Axel-exclusive $875.00

  • United Airlines UA992: IAD 2026-12-03 18:50:00 → BCN 2026-12-04 09:00:00; nonstop; 490 minutes. Local airport times.
  • United Airlines UA991: BCN 2026-12-17 10:30:00 → IAD 2026-12-17 14:00:00; nonstop; 570 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Dulles (IAD) to Barcelona (BCN) · Dec 3, 2026 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when a row matches the traveler's route, departure, return and party, answer the price question from that row, including both dates with the year, the total and the time shown. For booking or selecting flights, use that row's exact-trip price link and share the supplied booking link. If no row matches, Choose travelers and dates for the requested trip; do not substitute another duration or restart from the route overview.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Washington, DC to Barcelona (BCN) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.