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Route overview: Denver to Madrid (MAD) flight deals

Denver → Madrid

Dec 31, 2026 · choose your return date

DEN → MAD1 adulteconomyOne way and round trips

32 flight options · 3 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 31, 2026 · One wayAir CanadaUp to 1 stop each way$689.00 Dec 31, 2026 · One wayUnited AirlinesUp to 1 stop each way$728.00 Dec 31, 2026 – Jan 2, 2027 · 2 nightsAir CanadaUp to 1 stop each way$1014.00 Dec 31, 2026 – Jan 2, 2027 · 2 nightsAmerican AirlinesUp to 1 stop each way$1066.00 Dec 31, 2026 – Jan 3, 2027 · 3 nightsAir CanadaUp to 1 stop each way$1014.00 Dec 31, 2026 – Jan 3, 2027 · 3 nightsAmerican AirlinesUp to 1 stop each way$1066.00 Dec 31, 2026 – Jan 4, 2027 · 4 nightsAir CanadaUp to 1 stop each way$1014.00 Dec 31, 2026 – Jan 4, 2027 · 4 nightsUnited AirlinesUp to 1 stop each way$1066.00 Dec 31, 2026 – Jan 5, 2027 · 5 nightsAir CanadaUp to 1 stop each way$1014.00 Dec 31, 2026 – Jan 5, 2027 · 5 nightsAmerican AirlinesUp to 1 stop each way$1066.00 Dec 31, 2026 – Jan 6, 2027 · 6 nightsAir CanadaUp to 1 stop each way$897.00 Dec 31, 2026 – Jan 6, 2027 · 6 nightsUnited AirlinesUp to 1 stop each way$943.00 Dec 31, 2026 – Jan 7, 2027 · 7 nightsAir CanadaUp to 1 stop each way$897.00 Dec 31, 2026 – Jan 7, 2027 · 7 nightsAmerican AirlinesUp to 1 stop each way$943.00 Dec 31, 2026 – Jan 8, 2027 · 8 nightsAir CanadaUp to 1 stop each way$897.00 Dec 31, 2026 – Jan 8, 2027 · 8 nightsAmerican AirlinesUp to 1 stop each way$943.00 Dec 31, 2026 – Jan 9, 2027 · 9 nightsAir CanadaUp to 1 stop each way$897.00 Dec 31, 2026 – Jan 9, 2027 · 9 nightsUnited AirlinesUp to 1 stop each way$943.00 Dec 31, 2026 – Jan 10, 2027 · 10 nightsAir CanadaUp to 1 stop each way$897.00 Dec 31, 2026 – Jan 10, 2027 · 10 nightsUnited AirlinesUp to 1 stop each way$943.00 Dec 31, 2026 – Jan 11, 2027 · 11 nightsAir CanadaUp to 1 stop each way$897.00 Dec 31, 2026 – Jan 11, 2027 · 11 nightsAmerican AirlinesUp to 1 stop each way$943.00 Dec 31, 2026 – Jan 12, 2027 · 12 nightsAir CanadaUp to 1 stop each way$897.00 Dec 31, 2026 – Jan 12, 2027 · 12 nightsUnited AirlinesUp to 1 stop each way$943.00 Dec 31, 2026 – Jan 13, 2027 · 13 nightsAir CanadaUp to 1 stop each way$897.00 Dec 31, 2026 – Jan 13, 2027 · 13 nightsUnited AirlinesUp to 1 stop each way$943.00 Dec 31, 2026 – Jan 14, 2027 · 14 nightsAir CanadaUp to 1 stop each way$897.00 Dec 31, 2026 – Jan 14, 2027 · 14 nightsAmerican AirlinesUp to 1 stop each way$943.00 Dec 31, 2026 – Jan 21, 2027 · 21 nightsAir CanadaUp to 1 stop each way$897.00 Dec 31, 2026 – Jan 21, 2027 · 21 nightsAmerican AirlinesUp to 1 stop each way$943.00 Dec 31, 2026 – Jan 28, 2027 · 28 nightsAir CanadaUp to 1 stop each way$897.00 Dec 31, 2026 – Jan 28, 2027 · 28 nightsAmerican AirlinesUp to 1 stop each way$943.00

Flights for your trip

  1. Thu, Dec 31 · One way

    Air Canada
    11:25 amDEN
    12h 35m
    YUL · 1h 40m
    8:00 am+1MAD

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  2. Thu, Dec 31 · One way

    United Airlines
    10:20 amDEN
    13h 25m
    IAD · 2h 26m
    7:45 am+1MAD

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  3. Thu, Dec 31 – Sat, Jan 2

    Air Canada
    11:25 amDEN
    12h 35m
    YUL · 1h 40m
    8:00 am+1MAD
    Air Canada
    1:25 pmMAD
    15h 2m
    YUL · 2h 10m
    8:27 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  4. Thu, Dec 31 – Sat, Jan 2

    American Airlines
    9:12 amDEN
    12h 58m
    DFW · 1h 32m
    6:10 am+1MAD
    American Airlines
    12:40 pmMAD
    16h 7m
    CLT · 3h
    8:47 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  5. Thu, Dec 31 – Sun, Jan 3

    Air Canada
    11:25 amDEN
    12h 35m
    YUL · 1h 40m
    8:00 am+1MAD
    Air Canada
    1:25 pmMAD
    15h 2m
    YUL · 2h 10m
    8:27 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  6. Thu, Dec 31 – Sun, Jan 3

    American Airlines
    9:12 amDEN
    12h 58m
    DFW · 1h 32m
    6:10 am+1MAD
    American Airlines
    12:40 pmMAD
    16h 7m
    CLT · 3h
    8:47 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  7. Thu, Dec 31 – Mon, Jan 4

    Air Canada
    11:25 amDEN
    12h 35m
    YUL · 1h 40m
    8:00 am+1MAD
    Air Canada
    1:25 pmMAD
    15h 2m
    YUL · 2h 10m
    8:27 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  8. Thu, Dec 31 – Mon, Jan 4

    United Airlines
    10:20 amDEN
    13h 25m
    IAD · 2h 26m
    7:45 am+1MAD
    United Airlines
    11:00 amMAD
    15h 17m
    IAD · 2h 10m
    6:17 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  9. Thu, Dec 31 – Wed, Jan 6

    Air Canada
    11:25 amDEN
    12h 35m
    YUL · 1h 40m
    8:00 am+1MAD
    Air Canada
    1:25 pmMAD
    15h 2m
    YUL · 2h 10m
    8:27 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  10. Thu, Dec 31 – Wed, Jan 6

    United Airlines
    10:20 amDEN
    13h 25m
    IAD · 2h 26m
    7:45 am+1MAD
    United Airlines
    11:00 amMAD
    15h 17m
    IAD · 2h 10m
    6:17 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  11. Thu, Dec 31 – Thu, Jan 7

    Air Canada
    11:25 amDEN
    12h 35m
    YUL · 1h 40m
    8:00 am+1MAD
    Air Canada
    1:25 pmMAD
    15h 2m
    YUL · 2h 10m
    8:27 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  12. Thu, Dec 31 – Thu, Jan 7

    American Airlines
    9:12 amDEN
    12h 58m
    DFW · 1h 32m
    6:10 am+1MAD
    American Airlines
    12:40 pmMAD
    16h 7m
    CLT · 3h
    8:47 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  13. Thu, Dec 31 – Sat, Jan 9

    Air Canada
    11:25 amDEN
    12h 35m
    YUL · 1h 40m
    8:00 am+1MAD
    Air Canada
    1:25 pmMAD
    15h 2m
    YUL · 2h 10m
    8:27 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  14. Thu, Dec 31 – Sat, Jan 9

    United Airlines
    10:20 amDEN
    13h 25m
    IAD · 2h 26m
    7:45 am+1MAD
    United Airlines
    11:00 amMAD
    15h 17m
    IAD · 2h 10m
    6:17 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  15. Thu, Dec 31 – Sun, Jan 10

    Air Canada
    11:25 amDEN
    12h 35m
    YUL · 1h 40m
    8:00 am+1MAD
    Air Canada
    1:25 pmMAD
    15h 2m
    YUL · 2h 10m
    8:27 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  16. Thu, Dec 31 – Sun, Jan 10

    United Airlines
    10:20 amDEN
    13h 25m
    IAD · 2h 26m
    7:45 am+1MAD
    United Airlines
    11:00 amMAD
    15h 17m
    IAD · 2h 10m
    6:17 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  17. Thu, Dec 31 – Mon, Jan 11

    Air Canada
    11:25 amDEN
    12h 35m
    YUL · 1h 40m
    8:00 am+1MAD
    Air Canada
    1:25 pmMAD
    15h 2m
    YUL · 2h 10m
    8:27 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  18. Thu, Dec 31 – Mon, Jan 11

    American Airlines
    9:12 amDEN
    12h 58m
    DFW · 1h 32m
    6:10 am+1MAD
    American Airlines
    12:40 pmMAD
    16h 7m
    CLT · 3h
    8:47 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  19. Thu, Dec 31 – Wed, Jan 13

    Air Canada
    11:25 amDEN
    12h 35m
    YUL · 1h 40m
    8:00 am+1MAD
    Air Canada
    1:25 pmMAD
    15h 2m
    YUL · 2h 10m
    8:27 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  20. Thu, Dec 31 – Wed, Jan 13

    United Airlines
    10:20 amDEN
    13h 25m
    IAD · 2h 26m
    7:45 am+1MAD
    United Airlines
    11:00 amMAD
    15h 17m
    IAD · 2h 10m
    6:17 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  21. Thu, Dec 31 – Thu, Jan 14

    Air Canada
    11:25 amDEN
    12h 35m
    YUL · 1h 40m
    8:00 am+1MAD
    Air Canada
    1:25 pmMAD
    15h 2m
    YUL · 2h 10m
    8:27 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  22. Thu, Dec 31 – Thu, Jan 14

    American Airlines
    9:12 amDEN
    12h 58m
    DFW · 1h 32m
    6:10 am+1MAD
    American Airlines
    12:40 pmMAD
    16h 7m
    CLT · 3h
    8:47 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  23. Thu, Dec 31 – Thu, Jan 28

    Air Canada
    11:25 amDEN
    12h 35m
    YUL · 1h 40m
    8:00 am+1MAD
    Air Canada
    1:25 pmMAD
    15h 2m
    YUL · 2h 10m
    8:27 pmDEN

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  24. Thu, Dec 31 – Thu, Jan 28

    American Airlines
    9:12 amDEN
    12h 58m
    DFW · 1h 32m
    6:10 am+1MAD
    American Airlines
    12:40 pmMAD
    16h 7m
    CLT · 3h
    8:47 pmDEN

    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

DEN ⇄ MAD

Economy

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

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Explore this route

All dates for this routeDec 30, 2026 · Return optionsJan 1, 2027 · Return optionsHotels in Madrid 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)
2026-12-31 · one wayAir CanadaAC1074 + AC834Axel-exclusive $689.002026-10-29T01:55:16Z
2026-12-31 · one wayUnited AirlinesUA2087 + UA260Axel-exclusive $728.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-02Air CanadaAC1074 + AC834 / AC835 + AC1075Axel-exclusive $1014.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-02American AirlinesAA1523 + IB364 / AA749 + AA2279Axel-exclusive $1066.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-03Air CanadaAC1074 + AC834 / AC835 + AC1075Axel-exclusive $1014.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-03American AirlinesAA1523 + IB364 / AA749 + AA2279Axel-exclusive $1066.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-04Air CanadaAC1074 + AC834 / AC835 + AC1075Axel-exclusive $1014.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-04United AirlinesUA2087 + UA260 / UA261 + UA395Axel-exclusive $1066.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-05Air CanadaAC1074 + AC834 / AC835 + AC1075Axel-exclusive $1014.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-05American AirlinesAA1523 + IB364 / AA749 + AA2279Axel-exclusive $1066.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-06Air CanadaAC1074 + AC834 / AC835 + AC1075Axel-exclusive $897.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-06United AirlinesUA2087 + UA260 / UA261 + UA395Axel-exclusive $943.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-07Air CanadaAC1074 + AC834 / AC835 + AC1075Axel-exclusive $897.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-07American AirlinesAA1523 + IB364 / AA749 + AA2279Axel-exclusive $943.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-08Air CanadaAC1074 + AC834 / AC835 + AC1075Axel-exclusive $897.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-08American AirlinesAA1523 + IB364 / AA749 + AA2279Axel-exclusive $943.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-09Air CanadaAC1074 + AC834 / AC835 + AC1075Axel-exclusive $897.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-09United AirlinesUA2087 + UA260 / UA261 + UA395Axel-exclusive $943.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-10Air CanadaAC1074 + AC834 / AC835 + AC1075Axel-exclusive $897.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-10United AirlinesUA2087 + UA260 / UA261 + UA395Axel-exclusive $943.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-11Air CanadaAC1074 + AC834 / AC835 + AC1075Axel-exclusive $897.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-11American AirlinesAA1523 + IB364 / AA749 + AA2279Axel-exclusive $943.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-12Air CanadaAC1074 + AC834 / AC835 + AC1075Axel-exclusive $897.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-12United AirlinesUA2087 + UA260 / UA261 + UA395Axel-exclusive $943.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-13Air CanadaAC1074 + AC834 / AC835 + AC1075Axel-exclusive $897.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-13United AirlinesUA2087 + UA260 / UA261 + UA395Axel-exclusive $943.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-14Air CanadaAC1074 + AC834 / AC835 + AC1075Axel-exclusive $897.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-14American AirlinesAA1523 + IB364 / AA749 + AA2279Axel-exclusive $943.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-21Air CanadaAC1074 + AC834 / AC835 + AC1075Axel-exclusive $897.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-21American AirlinesAA1523 + IB364 / AA749 + AA2279Axel-exclusive $943.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-28Air CanadaAC1074 + AC834 / AC835 + AC1075Axel-exclusive $897.002026-10-29T01:55:16Z
2026-12-31 → 2027-01-28American AirlinesAA1523 + IB364 / AA749 + AA2279Axel-exclusive $943.002026-10-29T01:55:16Z

Route overview: Denver to Madrid (MAD) flight deals

2026-12-31 · one way · Axel-exclusive $689.00

  • Air Canada AC1074 / AC834: DEN 2026-12-31 11:25:00 → MAD 2027-01-01 08:00:00; 1 stop(s) via YUL; 755 minutes. Local airport times.
    • AC1074: DEN 2026-12-31 11:25:00 → YUL 2026-12-31 17:10:00; layover at YUL: 100 minutes.
    • AC834: YUL 2026-12-31 18:50:00 → MAD 2027-01-01 08:00:00.

2026-12-31 · one way · Axel-exclusive $728.00

  • United Airlines UA2087 / UA260: DEN 2026-12-31 10:20:00 → MAD 2027-01-01 07:45:00; 1 stop(s) via IAD; 805 minutes. Local airport times.
    • UA2087: DEN 2026-12-31 10:20:00 → IAD 2026-12-31 15:44:00; layover at IAD: 146 minutes.
    • UA260: IAD 2026-12-31 18:10:00 → MAD 2027-01-01 07:45:00.

2026-12-31 → 2027-01-02 · Axel-exclusive $1014.00

  • Air Canada AC1074 / AC834: DEN 2026-12-31 11:25:00 → MAD 2027-01-01 08:00:00; 1 stop(s) via YUL; 755 minutes. Local airport times.
    • AC1074: DEN 2026-12-31 11:25:00 → YUL 2026-12-31 17:10:00; layover at YUL: 100 minutes.
    • AC834: YUL 2026-12-31 18:50:00 → MAD 2027-01-01 08:00:00.
  • Air Canada AC835 / AC1075: MAD 2027-01-02 13:25:00 → DEN 2027-01-02 20:27:00; 1 stop(s) via YUL; 902 minutes. Local airport times.
    • AC835: MAD 2027-01-02 13:25:00 → YUL 2027-01-02 15:40:00; layover at YUL: 130 minutes.
    • AC1075: YUL 2027-01-02 17:50:00 → DEN 2027-01-02 20:27:00.

2026-12-31 → 2027-01-02 · Axel-exclusive $1066.00

  • American Airlines AA1523 / IB364: DEN 2026-12-31 09:12:00 → MAD 2027-01-01 06:10:00; 1 stop(s) via DFW; 778 minutes. Local airport times.
    • AA1523: DEN 2026-12-31 09:12:00 → DFW 2026-12-31 12:18:00; layover at DFW: 92 minutes.
    • IB364: DFW 2026-12-31 13:50:00 → MAD 2027-01-01 06:10:00.
  • American Airlines AA749 / AA2279: MAD 2027-01-02 12:40:00 → DEN 2027-01-02 20:47:00; 1 stop(s) via CLT; 967 minutes. Local airport times.
    • AA749: MAD 2027-01-02 12:40:00 → CLT 2027-01-02 16:00:00; layover at CLT: 180 minutes.
    • AA2279: CLT 2027-01-02 19:00:00 → DEN 2027-01-02 20:47:00.

2026-12-31 → 2027-01-03 · Axel-exclusive $1014.00

  • Air Canada AC1074 / AC834: DEN 2026-12-31 11:25:00 → MAD 2027-01-01 08:00:00; 1 stop(s) via YUL; 755 minutes. Local airport times.
    • AC1074: DEN 2026-12-31 11:25:00 → YUL 2026-12-31 17:10:00; layover at YUL: 100 minutes.
    • AC834: YUL 2026-12-31 18:50:00 → MAD 2027-01-01 08:00:00.
  • Air Canada AC835 / AC1075: MAD 2027-01-03 13:25:00 → DEN 2027-01-03 20:27:00; 1 stop(s) via YUL; 902 minutes. Local airport times.
    • AC835: MAD 2027-01-03 13:25:00 → YUL 2027-01-03 15:40:00; layover at YUL: 130 minutes.
    • AC1075: YUL 2027-01-03 17:50:00 → DEN 2027-01-03 20:27:00.

2026-12-31 → 2027-01-03 · Axel-exclusive $1066.00

  • American Airlines AA1523 / IB364: DEN 2026-12-31 09:12:00 → MAD 2027-01-01 06:10:00; 1 stop(s) via DFW; 778 minutes. Local airport times.
    • AA1523: DEN 2026-12-31 09:12:00 → DFW 2026-12-31 12:18:00; layover at DFW: 92 minutes.
    • IB364: DFW 2026-12-31 13:50:00 → MAD 2027-01-01 06:10:00.
  • American Airlines AA749 / AA2279: MAD 2027-01-03 12:40:00 → DEN 2027-01-03 20:47:00; 1 stop(s) via CLT; 967 minutes. Local airport times.
    • AA749: MAD 2027-01-03 12:40:00 → CLT 2027-01-03 16:00:00; layover at CLT: 180 minutes.
    • AA2279: CLT 2027-01-03 19:00:00 → DEN 2027-01-03 20:47:00.

2026-12-31 → 2027-01-04 · Axel-exclusive $1014.00

  • Air Canada AC1074 / AC834: DEN 2026-12-31 11:25:00 → MAD 2027-01-01 08:00:00; 1 stop(s) via YUL; 755 minutes. Local airport times.
    • AC1074: DEN 2026-12-31 11:25:00 → YUL 2026-12-31 17:10:00; layover at YUL: 100 minutes.
    • AC834: YUL 2026-12-31 18:50:00 → MAD 2027-01-01 08:00:00.
  • Air Canada AC835 / AC1075: MAD 2027-01-04 13:25:00 → DEN 2027-01-04 20:27:00; 1 stop(s) via YUL; 902 minutes. Local airport times.
    • AC835: MAD 2027-01-04 13:25:00 → YUL 2027-01-04 15:40:00; layover at YUL: 130 minutes.
    • AC1075: YUL 2027-01-04 17:50:00 → DEN 2027-01-04 20:27:00.

2026-12-31 → 2027-01-04 · Axel-exclusive $1066.00

  • United Airlines UA2087 / UA260: DEN 2026-12-31 10:20:00 → MAD 2027-01-01 07:45:00; 1 stop(s) via IAD; 805 minutes. Local airport times.
    • UA2087: DEN 2026-12-31 10:20:00 → IAD 2026-12-31 15:44:00; layover at IAD: 146 minutes.
    • UA260: IAD 2026-12-31 18:10:00 → MAD 2027-01-01 07:45:00.
  • United Airlines UA261 / UA395: MAD 2027-01-04 11:00:00 → DEN 2027-01-04 18:17:00; 1 stop(s) via IAD; 917 minutes. Local airport times.
    • UA261: MAD 2027-01-04 11:00:00 → IAD 2027-01-04 14:00:00; layover at IAD: 130 minutes.
    • UA395: IAD 2027-01-04 16:10:00 → DEN 2027-01-04 18:17:00.

2026-12-31 → 2027-01-06 · Axel-exclusive $897.00

  • Air Canada AC1074 / AC834: DEN 2026-12-31 11:25:00 → MAD 2027-01-01 08:00:00; 1 stop(s) via YUL; 755 minutes. Local airport times.
    • AC1074: DEN 2026-12-31 11:25:00 → YUL 2026-12-31 17:10:00; layover at YUL: 100 minutes.
    • AC834: YUL 2026-12-31 18:50:00 → MAD 2027-01-01 08:00:00.
  • Air Canada AC835 / AC1075: MAD 2027-01-06 13:25:00 → DEN 2027-01-06 20:27:00; 1 stop(s) via YUL; 902 minutes. Local airport times.
    • AC835: MAD 2027-01-06 13:25:00 → YUL 2027-01-06 15:40:00; layover at YUL: 130 minutes.
    • AC1075: YUL 2027-01-06 17:50:00 → DEN 2027-01-06 20:27:00.

2026-12-31 → 2027-01-06 · Axel-exclusive $943.00

  • United Airlines UA2087 / UA260: DEN 2026-12-31 10:20:00 → MAD 2027-01-01 07:45:00; 1 stop(s) via IAD; 805 minutes. Local airport times.
    • UA2087: DEN 2026-12-31 10:20:00 → IAD 2026-12-31 15:44:00; layover at IAD: 146 minutes.
    • UA260: IAD 2026-12-31 18:10:00 → MAD 2027-01-01 07:45:00.
  • United Airlines UA261 / UA395: MAD 2027-01-06 11:00:00 → DEN 2027-01-06 18:17:00; 1 stop(s) via IAD; 917 minutes. Local airport times.
    • UA261: MAD 2027-01-06 11:00:00 → IAD 2027-01-06 14:00:00; layover at IAD: 130 minutes.
    • UA395: IAD 2027-01-06 16:10:00 → DEN 2027-01-06 18:17:00.

2026-12-31 → 2027-01-07 · Axel-exclusive $897.00

  • Air Canada AC1074 / AC834: DEN 2026-12-31 11:25:00 → MAD 2027-01-01 08:00:00; 1 stop(s) via YUL; 755 minutes. Local airport times.
    • AC1074: DEN 2026-12-31 11:25:00 → YUL 2026-12-31 17:10:00; layover at YUL: 100 minutes.
    • AC834: YUL 2026-12-31 18:50:00 → MAD 2027-01-01 08:00:00.
  • Air Canada AC835 / AC1075: MAD 2027-01-07 13:25:00 → DEN 2027-01-07 20:27:00; 1 stop(s) via YUL; 902 minutes. Local airport times.
    • AC835: MAD 2027-01-07 13:25:00 → YUL 2027-01-07 15:40:00; layover at YUL: 130 minutes.
    • AC1075: YUL 2027-01-07 17:50:00 → DEN 2027-01-07 20:27:00.

2026-12-31 → 2027-01-07 · Axel-exclusive $943.00

  • American Airlines AA1523 / IB364: DEN 2026-12-31 09:12:00 → MAD 2027-01-01 06:10:00; 1 stop(s) via DFW; 778 minutes. Local airport times.
    • AA1523: DEN 2026-12-31 09:12:00 → DFW 2026-12-31 12:18:00; layover at DFW: 92 minutes.
    • IB364: DFW 2026-12-31 13:50:00 → MAD 2027-01-01 06:10:00.
  • American Airlines AA749 / AA2279: MAD 2027-01-07 12:40:00 → DEN 2027-01-07 20:47:00; 1 stop(s) via CLT; 967 minutes. Local airport times.
    • AA749: MAD 2027-01-07 12:40:00 → CLT 2027-01-07 16:00:00; layover at CLT: 180 minutes.
    • AA2279: CLT 2027-01-07 19:00:00 → DEN 2027-01-07 20:47:00.

2026-12-31 → 2027-01-09 · Axel-exclusive $897.00

  • Air Canada AC1074 / AC834: DEN 2026-12-31 11:25:00 → MAD 2027-01-01 08:00:00; 1 stop(s) via YUL; 755 minutes. Local airport times.
    • AC1074: DEN 2026-12-31 11:25:00 → YUL 2026-12-31 17:10:00; layover at YUL: 100 minutes.
    • AC834: YUL 2026-12-31 18:50:00 → MAD 2027-01-01 08:00:00.
  • Air Canada AC835 / AC1075: MAD 2027-01-09 13:25:00 → DEN 2027-01-09 20:27:00; 1 stop(s) via YUL; 902 minutes. Local airport times.
    • AC835: MAD 2027-01-09 13:25:00 → YUL 2027-01-09 15:40:00; layover at YUL: 130 minutes.
    • AC1075: YUL 2027-01-09 17:50:00 → DEN 2027-01-09 20:27:00.

2026-12-31 → 2027-01-09 · Axel-exclusive $943.00

  • United Airlines UA2087 / UA260: DEN 2026-12-31 10:20:00 → MAD 2027-01-01 07:45:00; 1 stop(s) via IAD; 805 minutes. Local airport times.
    • UA2087: DEN 2026-12-31 10:20:00 → IAD 2026-12-31 15:44:00; layover at IAD: 146 minutes.
    • UA260: IAD 2026-12-31 18:10:00 → MAD 2027-01-01 07:45:00.
  • United Airlines UA261 / UA395: MAD 2027-01-09 11:00:00 → DEN 2027-01-09 18:17:00; 1 stop(s) via IAD; 917 minutes. Local airport times.
    • UA261: MAD 2027-01-09 11:00:00 → IAD 2027-01-09 14:00:00; layover at IAD: 130 minutes.
    • UA395: IAD 2027-01-09 16:10:00 → DEN 2027-01-09 18:17:00.

2026-12-31 → 2027-01-10 · Axel-exclusive $897.00

  • Air Canada AC1074 / AC834: DEN 2026-12-31 11:25:00 → MAD 2027-01-01 08:00:00; 1 stop(s) via YUL; 755 minutes. Local airport times.
    • AC1074: DEN 2026-12-31 11:25:00 → YUL 2026-12-31 17:10:00; layover at YUL: 100 minutes.
    • AC834: YUL 2026-12-31 18:50:00 → MAD 2027-01-01 08:00:00.
  • Air Canada AC835 / AC1075: MAD 2027-01-10 13:25:00 → DEN 2027-01-10 20:27:00; 1 stop(s) via YUL; 902 minutes. Local airport times.
    • AC835: MAD 2027-01-10 13:25:00 → YUL 2027-01-10 15:40:00; layover at YUL: 130 minutes.
    • AC1075: YUL 2027-01-10 17:50:00 → DEN 2027-01-10 20:27:00.

2026-12-31 → 2027-01-10 · Axel-exclusive $943.00

  • United Airlines UA2087 / UA260: DEN 2026-12-31 10:20:00 → MAD 2027-01-01 07:45:00; 1 stop(s) via IAD; 805 minutes. Local airport times.
    • UA2087: DEN 2026-12-31 10:20:00 → IAD 2026-12-31 15:44:00; layover at IAD: 146 minutes.
    • UA260: IAD 2026-12-31 18:10:00 → MAD 2027-01-01 07:45:00.
  • United Airlines UA261 / UA395: MAD 2027-01-10 11:00:00 → DEN 2027-01-10 18:17:00; 1 stop(s) via IAD; 917 minutes. Local airport times.
    • UA261: MAD 2027-01-10 11:00:00 → IAD 2027-01-10 14:00:00; layover at IAD: 130 minutes.
    • UA395: IAD 2027-01-10 16:10:00 → DEN 2027-01-10 18:17:00.

2026-12-31 → 2027-01-11 · Axel-exclusive $897.00

  • Air Canada AC1074 / AC834: DEN 2026-12-31 11:25:00 → MAD 2027-01-01 08:00:00; 1 stop(s) via YUL; 755 minutes. Local airport times.
    • AC1074: DEN 2026-12-31 11:25:00 → YUL 2026-12-31 17:10:00; layover at YUL: 100 minutes.
    • AC834: YUL 2026-12-31 18:50:00 → MAD 2027-01-01 08:00:00.
  • Air Canada AC835 / AC1075: MAD 2027-01-11 13:25:00 → DEN 2027-01-11 20:27:00; 1 stop(s) via YUL; 902 minutes. Local airport times.
    • AC835: MAD 2027-01-11 13:25:00 → YUL 2027-01-11 15:40:00; layover at YUL: 130 minutes.
    • AC1075: YUL 2027-01-11 17:50:00 → DEN 2027-01-11 20:27:00.

2026-12-31 → 2027-01-11 · Axel-exclusive $943.00

  • American Airlines AA1523 / IB364: DEN 2026-12-31 09:12:00 → MAD 2027-01-01 06:10:00; 1 stop(s) via DFW; 778 minutes. Local airport times.
    • AA1523: DEN 2026-12-31 09:12:00 → DFW 2026-12-31 12:18:00; layover at DFW: 92 minutes.
    • IB364: DFW 2026-12-31 13:50:00 → MAD 2027-01-01 06:10:00.
  • American Airlines AA749 / AA2279: MAD 2027-01-11 12:40:00 → DEN 2027-01-11 20:47:00; 1 stop(s) via CLT; 967 minutes. Local airport times.
    • AA749: MAD 2027-01-11 12:40:00 → CLT 2027-01-11 16:00:00; layover at CLT: 180 minutes.
    • AA2279: CLT 2027-01-11 19:00:00 → DEN 2027-01-11 20:47:00.

2026-12-31 → 2027-01-13 · Axel-exclusive $897.00

  • Air Canada AC1074 / AC834: DEN 2026-12-31 11:25:00 → MAD 2027-01-01 08:00:00; 1 stop(s) via YUL; 755 minutes. Local airport times.
    • AC1074: DEN 2026-12-31 11:25:00 → YUL 2026-12-31 17:10:00; layover at YUL: 100 minutes.
    • AC834: YUL 2026-12-31 18:50:00 → MAD 2027-01-01 08:00:00.
  • Air Canada AC835 / AC1075: MAD 2027-01-13 13:25:00 → DEN 2027-01-13 20:27:00; 1 stop(s) via YUL; 902 minutes. Local airport times.
    • AC835: MAD 2027-01-13 13:25:00 → YUL 2027-01-13 15:40:00; layover at YUL: 130 minutes.
    • AC1075: YUL 2027-01-13 17:50:00 → DEN 2027-01-13 20:27:00.

2026-12-31 → 2027-01-13 · Axel-exclusive $943.00

  • United Airlines UA2087 / UA260: DEN 2026-12-31 10:20:00 → MAD 2027-01-01 07:45:00; 1 stop(s) via IAD; 805 minutes. Local airport times.
    • UA2087: DEN 2026-12-31 10:20:00 → IAD 2026-12-31 15:44:00; layover at IAD: 146 minutes.
    • UA260: IAD 2026-12-31 18:10:00 → MAD 2027-01-01 07:45:00.
  • United Airlines UA261 / UA395: MAD 2027-01-13 11:00:00 → DEN 2027-01-13 18:17:00; 1 stop(s) via IAD; 917 minutes. Local airport times.
    • UA261: MAD 2027-01-13 11:00:00 → IAD 2027-01-13 14:00:00; layover at IAD: 130 minutes.
    • UA395: IAD 2027-01-13 16:10:00 → DEN 2027-01-13 18:17:00.

2026-12-31 → 2027-01-14 · Axel-exclusive $897.00

  • Air Canada AC1074 / AC834: DEN 2026-12-31 11:25:00 → MAD 2027-01-01 08:00:00; 1 stop(s) via YUL; 755 minutes. Local airport times.
    • AC1074: DEN 2026-12-31 11:25:00 → YUL 2026-12-31 17:10:00; layover at YUL: 100 minutes.
    • AC834: YUL 2026-12-31 18:50:00 → MAD 2027-01-01 08:00:00.
  • Air Canada AC835 / AC1075: MAD 2027-01-14 13:25:00 → DEN 2027-01-14 20:27:00; 1 stop(s) via YUL; 902 minutes. Local airport times.
    • AC835: MAD 2027-01-14 13:25:00 → YUL 2027-01-14 15:40:00; layover at YUL: 130 minutes.
    • AC1075: YUL 2027-01-14 17:50:00 → DEN 2027-01-14 20:27:00.

2026-12-31 → 2027-01-14 · Axel-exclusive $943.00

  • American Airlines AA1523 / IB364: DEN 2026-12-31 09:12:00 → MAD 2027-01-01 06:10:00; 1 stop(s) via DFW; 778 minutes. Local airport times.
    • AA1523: DEN 2026-12-31 09:12:00 → DFW 2026-12-31 12:18:00; layover at DFW: 92 minutes.
    • IB364: DFW 2026-12-31 13:50:00 → MAD 2027-01-01 06:10:00.
  • American Airlines AA749 / AA2279: MAD 2027-01-14 12:40:00 → DEN 2027-01-14 20:47:00; 1 stop(s) via CLT; 967 minutes. Local airport times.
    • AA749: MAD 2027-01-14 12:40:00 → CLT 2027-01-14 16:00:00; layover at CLT: 180 minutes.
    • AA2279: CLT 2027-01-14 19:00:00 → DEN 2027-01-14 20:47:00.

2026-12-31 → 2027-01-28 · Axel-exclusive $897.00

  • Air Canada AC1074 / AC834: DEN 2026-12-31 11:25:00 → MAD 2027-01-01 08:00:00; 1 stop(s) via YUL; 755 minutes. Local airport times.
    • AC1074: DEN 2026-12-31 11:25:00 → YUL 2026-12-31 17:10:00; layover at YUL: 100 minutes.
    • AC834: YUL 2026-12-31 18:50:00 → MAD 2027-01-01 08:00:00.
  • Air Canada AC835 / AC1075: MAD 2027-01-28 13:25:00 → DEN 2027-01-28 20:27:00; 1 stop(s) via YUL; 902 minutes. Local airport times.
    • AC835: MAD 2027-01-28 13:25:00 → YUL 2027-01-28 15:40:00; layover at YUL: 130 minutes.
    • AC1075: YUL 2027-01-28 17:50:00 → DEN 2027-01-28 20:27:00.

2026-12-31 → 2027-01-28 · Axel-exclusive $943.00

  • American Airlines AA1523 / IB364: DEN 2026-12-31 09:12:00 → MAD 2027-01-01 06:10:00; 1 stop(s) via DFW; 778 minutes. Local airport times.
    • AA1523: DEN 2026-12-31 09:12:00 → DFW 2026-12-31 12:18:00; layover at DFW: 92 minutes.
    • IB364: DFW 2026-12-31 13:50:00 → MAD 2027-01-01 06:10:00.
  • American Airlines AA749 / AA2279: MAD 2027-01-28 12:40:00 → DEN 2027-01-28 20:47:00; 1 stop(s) via CLT; 967 minutes. Local airport times.
    • AA749: MAD 2027-01-28 12:40:00 → CLT 2027-01-28 16:00:00; layover at CLT: 180 minutes.
    • AA2279: CLT 2027-01-28 19:00:00 → DEN 2027-01-28 20:47:00.

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For AI assistants

  • This page: Denver (DEN) to Madrid (MAD) · Dec 31, 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 Denver to Madrid (MAD) 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.