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Route overview: Austin to Philadelphia (PHL) flight deals

Austin → Philadelphia

Dec 18, 2026 · choose your return date

AUS → PHL1 adulteconomyOne way and round trips

30 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 18, 2026 · One waySouthwest AirlinesUp to 1 stop each way$155.00 Dec 18, 2026 · One wayAmerican AirlinesUp to 1 stop each way$160.00 Dec 18, 2026 – Dec 19, 2026 · 1 nightSouthwest AirlinesUp to 1 stop each way$354.00 Dec 18, 2026 – Dec 19, 2026 · 1 nightUnited AirlinesUp to 1 stop each way$372.00 Dec 18, 2026 – Dec 20, 2026 · 2 nightsSouthwest AirlinesUp to 1 stop each way$354.00 Dec 18, 2026 – Dec 20, 2026 · 2 nightsUnited AirlinesUp to 1 stop each way$372.00 Dec 18, 2026 – Dec 21, 2026 · 3 nightsSouthwest AirlinesUp to 1 stop each way$354.00 Dec 18, 2026 – Dec 21, 2026 · 3 nightsUnited AirlinesUp to 1 stop each way$372.00 Dec 18, 2026 – Dec 22, 2026 · 4 nightsSouthwest AirlinesUp to 1 stop each way$354.00 Dec 18, 2026 – Dec 22, 2026 · 4 nightsUnited AirlinesUp to 1 stop each way$372.00 Dec 18, 2026 – Dec 23, 2026 · 5 nightsSouthwest AirlinesUp to 1 stop each way$354.00 Dec 18, 2026 – Dec 23, 2026 · 5 nightsUnited AirlinesUp to 1 stop each way$372.00 Dec 18, 2026 – Dec 24, 2026 · 6 nightsSouthwest AirlinesUp to 1 stop each way$354.00 Dec 18, 2026 – Dec 24, 2026 · 6 nightsUnited AirlinesUp to 1 stop each way$372.00 Dec 18, 2026 – Dec 25, 2026 · 7 nightsSouthwest AirlinesUp to 1 stop each way$354.00 Dec 18, 2026 – Dec 25, 2026 · 7 nightsUnited AirlinesUp to 1 stop each way$372.00 Dec 18, 2026 – Dec 26, 2026 · 8 nightsSouthwest AirlinesUp to 1 stop each way$354.00 Dec 18, 2026 – Dec 26, 2026 · 8 nightsUnited AirlinesUp to 1 stop each way$372.00 Dec 18, 2026 – Dec 27, 2026 · 9 nightsSouthwest AirlinesUp to 1 stop each way$354.00 Dec 18, 2026 – Dec 27, 2026 · 9 nightsUnited AirlinesUp to 1 stop each way$372.00 Dec 18, 2026 – Dec 28, 2026 · 10 nightsSouthwest AirlinesUp to 1 stop each way$354.00 Dec 18, 2026 – Dec 28, 2026 · 10 nightsUnited AirlinesUp to 1 stop each way$372.00 Dec 18, 2026 – Dec 29, 2026 · 11 nightsSouthwest AirlinesUp to 1 stop each way$354.00 Dec 18, 2026 – Dec 29, 2026 · 11 nightsUnited AirlinesUp to 1 stop each way$372.00 Dec 18, 2026 – Dec 30, 2026 · 12 nightsSouthwest AirlinesUp to 1 stop each way$354.00 Dec 18, 2026 – Dec 30, 2026 · 12 nightsUnited AirlinesUp to 1 stop each way$372.00 Dec 18, 2026 – Dec 31, 2026 · 13 nightsSouthwest AirlinesUp to 1 stop each way$354.00 Dec 18, 2026 – Dec 31, 2026 · 13 nightsUnited AirlinesUp to 1 stop each way$372.00 Dec 18, 2026 – Jan 1, 2027 · 14 nightsSouthwest AirlinesUp to 1 stop each way$343.68 Dec 18, 2026 – Jan 1, 2027 · 14 nightsUnited AirlinesUp to 1 stop each way$361.15

Flights for your trip

  1. Fri, Dec 18 · One way

    Southwest Airlines
    3:15 pmAUS
    5h 15m
    STL · 1h
    9:30 pmPHL

    One-way total · 1 adult · Taxes included

  2. Fri, Dec 18 · One way

    American Airlines
    8:09 amAUS
    5h 34m
    CLT · 1h 8m
    2:43 pmPHL

    One-way total · 1 adult · Taxes included

  3. Fri, Dec 18 – Sat, Dec 19

    Southwest Airlines
    3:15 pmAUS
    5h 15m
    STL · 1h
    9:30 pmPHL
    Southwest Airlines
    5:05 pmPHL
    5h 30m
    DAL · 1h
    9:35 pmAUS

    Round-trip total · 1 adult · Taxes included

  4. Fri, Dec 18 – Sat, Dec 19

    United Airlines
    12:11 pmAUS
    5h 47m
    IAH · 1h 12m
    6:58 pmPHL
    United Airlines
    3:05 pmPHL
    6h 52m
    IAD · 1h 42m
    8:57 pmAUS

    Round-trip total · 1 adult · Taxes included

  5. Fri, Dec 18 – Sun, Dec 20

    Southwest Airlines
    3:15 pmAUS
    5h 15m
    STL · 1h
    9:30 pmPHL
    Southwest Airlines
    5:05 pmPHL
    5h 30m
    DAL · 1h
    9:35 pmAUS

    Round-trip total · 1 adult · Taxes included

  6. Fri, Dec 18 – Sun, Dec 20

    United Airlines
    12:11 pmAUS
    5h 47m
    IAH · 1h 12m
    6:58 pmPHL
    United Airlines
    3:05 pmPHL
    6h 52m
    IAD · 1h 42m
    8:57 pmAUS

    Round-trip total · 1 adult · Taxes included

  7. Fri, Dec 18 – Mon, Dec 21

    Southwest Airlines
    3:15 pmAUS
    5h 15m
    STL · 1h
    9:30 pmPHL
    Southwest Airlines
    5:05 pmPHL
    5h 30m
    DAL · 1h
    9:35 pmAUS

    Round-trip total · 1 adult · Taxes included

  8. Fri, Dec 18 – Mon, Dec 21

    United Airlines
    12:11 pmAUS
    5h 47m
    IAH · 1h 12m
    6:58 pmPHL
    United Airlines
    3:05 pmPHL
    6h 52m
    IAD · 1h 42m
    8:57 pmAUS

    Round-trip total · 1 adult · Taxes included

  9. Fri, Dec 18 – Tue, Dec 22

    Southwest Airlines
    3:15 pmAUS
    5h 15m
    STL · 1h
    9:30 pmPHL
    Southwest Airlines
    5:05 pmPHL
    5h 30m
    DAL · 1h
    9:35 pmAUS

    Round-trip total · 1 adult · Taxes included

  10. Fri, Dec 18 – Tue, Dec 22

    United Airlines
    12:11 pmAUS
    5h 47m
    IAH · 1h 12m
    6:58 pmPHL
    United Airlines
    3:05 pmPHL
    6h 52m
    IAD · 1h 42m
    8:57 pmAUS

    Round-trip total · 1 adult · Taxes included

  11. Fri, Dec 18 – Thu, Dec 24

    Southwest Airlines
    3:15 pmAUS
    5h 15m
    STL · 1h
    9:30 pmPHL
    Southwest Airlines
    5:05 pmPHL
    5h 30m
    DAL · 1h
    9:35 pmAUS

    Round-trip total · 1 adult · Taxes included

  12. Fri, Dec 18 – Thu, Dec 24

    United Airlines
    12:11 pmAUS
    5h 47m
    IAH · 1h 12m
    6:58 pmPHL
    United Airlines
    3:05 pmPHL
    6h 52m
    IAD · 1h 42m
    8:57 pmAUS

    Round-trip total · 1 adult · Taxes included

  13. Fri, Dec 18 – Fri, Dec 25

    Southwest Airlines
    3:15 pmAUS
    5h 15m
    STL · 1h
    9:30 pmPHL
    Southwest Airlines
    5:05 pmPHL
    5h 30m
    DAL · 1h
    9:35 pmAUS

    Round-trip total · 1 adult · Taxes included

  14. Fri, Dec 18 – Fri, Dec 25

    United Airlines
    12:11 pmAUS
    5h 47m
    IAH · 1h 12m
    6:58 pmPHL
    United Airlines
    3:05 pmPHL
    6h 52m
    IAD · 1h 42m
    8:57 pmAUS

    Round-trip total · 1 adult · Taxes included

  15. Fri, Dec 18 – Sat, Dec 26

    Southwest Airlines
    3:15 pmAUS
    5h 15m
    STL · 1h
    9:30 pmPHL
    Southwest Airlines
    5:05 pmPHL
    5h 30m
    DAL · 1h
    9:35 pmAUS

    Round-trip total · 1 adult · Taxes included

  16. Fri, Dec 18 – Sat, Dec 26

    United Airlines
    12:11 pmAUS
    5h 47m
    IAH · 1h 12m
    6:58 pmPHL
    United Airlines
    3:05 pmPHL
    6h 52m
    IAD · 1h 42m
    8:57 pmAUS

    Round-trip total · 1 adult · Taxes included

  17. Fri, Dec 18 – Mon, Dec 28

    Southwest Airlines
    3:15 pmAUS
    5h 15m
    STL · 1h
    9:30 pmPHL
    Southwest Airlines
    5:05 pmPHL
    5h 30m
    DAL · 1h
    9:35 pmAUS

    Round-trip total · 1 adult · Taxes included

  18. Fri, Dec 18 – Mon, Dec 28

    United Airlines
    12:11 pmAUS
    5h 47m
    IAH · 1h 12m
    6:58 pmPHL
    United Airlines
    3:05 pmPHL
    6h 52m
    IAD · 1h 42m
    8:57 pmAUS

    Round-trip total · 1 adult · Taxes included

  19. Fri, Dec 18 – Tue, Dec 29

    Southwest Airlines
    3:15 pmAUS
    5h 15m
    STL · 1h
    9:30 pmPHL
    Southwest Airlines
    5:05 pmPHL
    5h 30m
    DAL · 1h
    9:35 pmAUS

    Round-trip total · 1 adult · Taxes included

  20. Fri, Dec 18 – Tue, Dec 29

    United Airlines
    12:11 pmAUS
    5h 47m
    IAH · 1h 12m
    6:58 pmPHL
    United Airlines
    3:05 pmPHL
    6h 52m
    IAD · 1h 42m
    8:57 pmAUS

    Round-trip total · 1 adult · Taxes included

  21. Fri, Dec 18 – Wed, Dec 30

    Southwest Airlines
    3:15 pmAUS
    5h 15m
    STL · 1h
    9:30 pmPHL
    Southwest Airlines
    5:05 pmPHL
    5h 30m
    DAL · 1h
    9:35 pmAUS

    Round-trip total · 1 adult · Taxes included

  22. Fri, Dec 18 – Wed, Dec 30

    United Airlines
    12:11 pmAUS
    5h 47m
    IAH · 1h 12m
    6:58 pmPHL
    United Airlines
    3:05 pmPHL
    6h 52m
    IAD · 1h 42m
    8:57 pmAUS

    Round-trip total · 1 adult · Taxes included

  23. Fri, Dec 18 – Fri, Jan 1

    Southwest Airlines
    3:15 pmAUS
    5h 15m
    STL · 1h
    9:30 pmPHL
    Southwest Airlines
    5:05 pmPHL
    5h 30m
    DAL · 1h
    9:35 pmAUS

    Round-trip total · 1 adult · Taxes included

  24. Fri, Dec 18 – Fri, Jan 1

    United Airlines
    12:11 pmAUS
    5h 47m
    IAH · 1h 12m
    6:58 pmPHL
    United Airlines
    3:05 pmPHL
    6h 52m
    IAD · 1h 42m
    8:57 pmAUS

    Round-trip total · 1 adult · Taxes included

Swipe to see 23 more recent deals.

1 of 24

Make this trip yours

AUS ⇄ PHL

Economy

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Explore this route

All dates for this routeDec 17, 2026 · Return optionsDec 19, 2026 · Return optionsHotels in Philadelphia with Axel
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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)
2026-12-18 · one waySouthwest AirlinesWN438 + WN4923Axel-exclusive $155.002026-10-29T00:47:07Z
2026-12-18 · one wayAmerican AirlinesAA2989 + AA687Axel-exclusive $160.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-19Southwest AirlinesWN438 + WN4923 / WN266 + WN1656Axel-exclusive $354.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-19United AirlinesUA1747 + UA551 / UA4575 + UA2337Axel-exclusive $372.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-20Southwest AirlinesWN438 + WN4923 / WN266 + WN1656Axel-exclusive $354.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-20United AirlinesUA1747 + UA551 / UA4575 + UA2337Axel-exclusive $372.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-21Southwest AirlinesWN438 + WN4923 / WN266 + WN1656Axel-exclusive $354.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-21United AirlinesUA1747 + UA551 / UA4575 + UA2337Axel-exclusive $372.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-22Southwest AirlinesWN438 + WN4923 / WN266 + WN1656Axel-exclusive $354.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-22United AirlinesUA1747 + UA551 / UA4575 + UA2337Axel-exclusive $372.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-23Southwest AirlinesWN438 + WN4923 / WN266 + WN1656Axel-exclusive $354.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-23United AirlinesUA1747 + UA551 / UA4575 + UA2337Axel-exclusive $372.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-24Southwest AirlinesWN438 + WN4923 / WN266 + WN1656Axel-exclusive $354.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-24United AirlinesUA1747 + UA551 / UA4575 + UA2337Axel-exclusive $372.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-25Southwest AirlinesWN438 + WN4923 / WN266 + WN1656Axel-exclusive $354.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-25United AirlinesUA1747 + UA551 / UA4575 + UA2337Axel-exclusive $372.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-26Southwest AirlinesWN438 + WN4923 / WN266 + WN1656Axel-exclusive $354.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-26United AirlinesUA1747 + UA551 / UA4575 + UA2337Axel-exclusive $372.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-27Southwest AirlinesWN438 + WN4923 / WN266 + WN1656Axel-exclusive $354.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-27United AirlinesUA1747 + UA551 / UA4575 + UA2337Axel-exclusive $372.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-28Southwest AirlinesWN438 + WN4923 / WN266 + WN1656Axel-exclusive $354.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-28United AirlinesUA1747 + UA551 / UA4575 + UA2337Axel-exclusive $372.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-29Southwest AirlinesWN438 + WN4923 / WN266 + WN1656Axel-exclusive $354.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-29United AirlinesUA1747 + UA551 / UA4575 + UA2337Axel-exclusive $372.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-30Southwest AirlinesWN438 + WN4923 / WN266 + WN1656Axel-exclusive $354.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-30United AirlinesUA1747 + UA551 / UA4575 + UA2337Axel-exclusive $372.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-31Southwest AirlinesWN438 + WN4923 / WN266 + WN1656Axel-exclusive $354.002026-10-29T00:47:07Z
2026-12-18 → 2026-12-31United AirlinesUA1747 + UA551 / UA4575 + UA2337Axel-exclusive $372.002026-10-29T00:47:07Z
2026-12-18 → 2027-01-01Southwest AirlinesWN438 + WN4923 / WN266 + WN1656Axel-exclusive $343.682026-10-29T00:47:07Z
2026-12-18 → 2027-01-01United AirlinesUA1747 + UA551 / UA4575 + UA2337Axel-exclusive $361.152026-10-29T00:47:07Z

Route overview: Austin to Philadelphia (PHL) flight deals

2026-12-18 · one way · Axel-exclusive $155.00

  • Southwest Airlines WN438 / WN4923: AUS 2026-12-18 15:15:00 → PHL 2026-12-18 21:30:00; 1 stop(s) via STL; 315 minutes. Local airport times.
    • WN438: AUS 2026-12-18 15:15:00 → STL 2026-12-18 17:20:00; layover at STL: 60 minutes.
    • WN4923: STL 2026-12-18 18:20:00 → PHL 2026-12-18 21:30:00.

2026-12-18 · one way · Axel-exclusive $160.00

  • American Airlines AA2989 / AA687: AUS 2026-12-18 08:09:00 → PHL 2026-12-18 14:43:00; 1 stop(s) via CLT; 334 minutes. Local airport times.
    • AA2989: AUS 2026-12-18 08:09:00 → CLT 2026-12-18 11:52:00; layover at CLT: 68 minutes.
    • AA687: CLT 2026-12-18 13:00:00 → PHL 2026-12-18 14:43:00.

2026-12-18 → 2026-12-19 · Axel-exclusive $354.00

  • Southwest Airlines WN438 / WN4923: AUS 2026-12-18 15:15:00 → PHL 2026-12-18 21:30:00; 1 stop(s) via STL; 315 minutes. Local airport times.
    • WN438: AUS 2026-12-18 15:15:00 → STL 2026-12-18 17:20:00; layover at STL: 60 minutes.
    • WN4923: STL 2026-12-18 18:20:00 → PHL 2026-12-18 21:30:00.
  • Southwest Airlines WN266 / WN1656: PHL 2026-12-19 17:05:00 → AUS 2026-12-19 21:35:00; 1 stop(s) via DAL; 330 minutes. Local airport times.
    • WN266: PHL 2026-12-19 17:05:00 → DAL 2026-12-19 19:30:00; layover at DAL: 60 minutes.
    • WN1656: DAL 2026-12-19 20:30:00 → AUS 2026-12-19 21:35:00.

2026-12-18 → 2026-12-19 · Axel-exclusive $372.00

  • United Airlines UA1747 / UA551: AUS 2026-12-18 12:11:00 → PHL 2026-12-18 18:58:00; 1 stop(s) via IAH; 347 minutes. Local airport times.
    • UA1747: AUS 2026-12-18 12:11:00 → IAH 2026-12-18 13:23:00; layover at IAH: 72 minutes.
    • UA551: IAH 2026-12-18 14:35:00 → PHL 2026-12-18 18:58:00.
  • United Airlines UA4575 / UA2337: PHL 2026-12-19 15:05:00 → AUS 2026-12-19 20:57:00; 1 stop(s) via IAD; 412 minutes. Local airport times.
    • UA4575: PHL 2026-12-19 15:05:00 → IAD 2026-12-19 16:18:00; layover at IAD: 102 minutes.
    • UA2337: IAD 2026-12-19 18:00:00 → AUS 2026-12-19 20:57:00.

2026-12-18 → 2026-12-20 · Axel-exclusive $354.00

  • Southwest Airlines WN438 / WN4923: AUS 2026-12-18 15:15:00 → PHL 2026-12-18 21:30:00; 1 stop(s) via STL; 315 minutes. Local airport times.
    • WN438: AUS 2026-12-18 15:15:00 → STL 2026-12-18 17:20:00; layover at STL: 60 minutes.
    • WN4923: STL 2026-12-18 18:20:00 → PHL 2026-12-18 21:30:00.
  • Southwest Airlines WN266 / WN1656: PHL 2026-12-20 17:05:00 → AUS 2026-12-20 21:35:00; 1 stop(s) via DAL; 330 minutes. Local airport times.
    • WN266: PHL 2026-12-20 17:05:00 → DAL 2026-12-20 19:30:00; layover at DAL: 60 minutes.
    • WN1656: DAL 2026-12-20 20:30:00 → AUS 2026-12-20 21:35:00.

2026-12-18 → 2026-12-20 · Axel-exclusive $372.00

  • United Airlines UA1747 / UA551: AUS 2026-12-18 12:11:00 → PHL 2026-12-18 18:58:00; 1 stop(s) via IAH; 347 minutes. Local airport times.
    • UA1747: AUS 2026-12-18 12:11:00 → IAH 2026-12-18 13:23:00; layover at IAH: 72 minutes.
    • UA551: IAH 2026-12-18 14:35:00 → PHL 2026-12-18 18:58:00.
  • United Airlines UA4575 / UA2337: PHL 2026-12-20 15:05:00 → AUS 2026-12-20 20:57:00; 1 stop(s) via IAD; 412 minutes. Local airport times.
    • UA4575: PHL 2026-12-20 15:05:00 → IAD 2026-12-20 16:18:00; layover at IAD: 102 minutes.
    • UA2337: IAD 2026-12-20 18:00:00 → AUS 2026-12-20 20:57:00.

2026-12-18 → 2026-12-21 · Axel-exclusive $354.00

  • Southwest Airlines WN438 / WN4923: AUS 2026-12-18 15:15:00 → PHL 2026-12-18 21:30:00; 1 stop(s) via STL; 315 minutes. Local airport times.
    • WN438: AUS 2026-12-18 15:15:00 → STL 2026-12-18 17:20:00; layover at STL: 60 minutes.
    • WN4923: STL 2026-12-18 18:20:00 → PHL 2026-12-18 21:30:00.
  • Southwest Airlines WN266 / WN1656: PHL 2026-12-21 17:05:00 → AUS 2026-12-21 21:35:00; 1 stop(s) via DAL; 330 minutes. Local airport times.
    • WN266: PHL 2026-12-21 17:05:00 → DAL 2026-12-21 19:30:00; layover at DAL: 60 minutes.
    • WN1656: DAL 2026-12-21 20:30:00 → AUS 2026-12-21 21:35:00.

2026-12-18 → 2026-12-21 · Axel-exclusive $372.00

  • United Airlines UA1747 / UA551: AUS 2026-12-18 12:11:00 → PHL 2026-12-18 18:58:00; 1 stop(s) via IAH; 347 minutes. Local airport times.
    • UA1747: AUS 2026-12-18 12:11:00 → IAH 2026-12-18 13:23:00; layover at IAH: 72 minutes.
    • UA551: IAH 2026-12-18 14:35:00 → PHL 2026-12-18 18:58:00.
  • United Airlines UA4575 / UA2337: PHL 2026-12-21 15:05:00 → AUS 2026-12-21 20:57:00; 1 stop(s) via IAD; 412 minutes. Local airport times.
    • UA4575: PHL 2026-12-21 15:05:00 → IAD 2026-12-21 16:18:00; layover at IAD: 102 minutes.
    • UA2337: IAD 2026-12-21 18:00:00 → AUS 2026-12-21 20:57:00.

2026-12-18 → 2026-12-22 · Axel-exclusive $354.00

  • Southwest Airlines WN438 / WN4923: AUS 2026-12-18 15:15:00 → PHL 2026-12-18 21:30:00; 1 stop(s) via STL; 315 minutes. Local airport times.
    • WN438: AUS 2026-12-18 15:15:00 → STL 2026-12-18 17:20:00; layover at STL: 60 minutes.
    • WN4923: STL 2026-12-18 18:20:00 → PHL 2026-12-18 21:30:00.
  • Southwest Airlines WN266 / WN1656: PHL 2026-12-22 17:05:00 → AUS 2026-12-22 21:35:00; 1 stop(s) via DAL; 330 minutes. Local airport times.
    • WN266: PHL 2026-12-22 17:05:00 → DAL 2026-12-22 19:30:00; layover at DAL: 60 minutes.
    • WN1656: DAL 2026-12-22 20:30:00 → AUS 2026-12-22 21:35:00.

2026-12-18 → 2026-12-22 · Axel-exclusive $372.00

  • United Airlines UA1747 / UA551: AUS 2026-12-18 12:11:00 → PHL 2026-12-18 18:58:00; 1 stop(s) via IAH; 347 minutes. Local airport times.
    • UA1747: AUS 2026-12-18 12:11:00 → IAH 2026-12-18 13:23:00; layover at IAH: 72 minutes.
    • UA551: IAH 2026-12-18 14:35:00 → PHL 2026-12-18 18:58:00.
  • United Airlines UA4575 / UA2337: PHL 2026-12-22 15:05:00 → AUS 2026-12-22 20:57:00; 1 stop(s) via IAD; 412 minutes. Local airport times.
    • UA4575: PHL 2026-12-22 15:05:00 → IAD 2026-12-22 16:18:00; layover at IAD: 102 minutes.
    • UA2337: IAD 2026-12-22 18:00:00 → AUS 2026-12-22 20:57:00.

2026-12-18 → 2026-12-24 · Axel-exclusive $354.00

  • Southwest Airlines WN438 / WN4923: AUS 2026-12-18 15:15:00 → PHL 2026-12-18 21:30:00; 1 stop(s) via STL; 315 minutes. Local airport times.
    • WN438: AUS 2026-12-18 15:15:00 → STL 2026-12-18 17:20:00; layover at STL: 60 minutes.
    • WN4923: STL 2026-12-18 18:20:00 → PHL 2026-12-18 21:30:00.
  • Southwest Airlines WN266 / WN1656: PHL 2026-12-24 17:05:00 → AUS 2026-12-24 21:35:00; 1 stop(s) via DAL; 330 minutes. Local airport times.
    • WN266: PHL 2026-12-24 17:05:00 → DAL 2026-12-24 19:30:00; layover at DAL: 60 minutes.
    • WN1656: DAL 2026-12-24 20:30:00 → AUS 2026-12-24 21:35:00.

2026-12-18 → 2026-12-24 · Axel-exclusive $372.00

  • United Airlines UA1747 / UA551: AUS 2026-12-18 12:11:00 → PHL 2026-12-18 18:58:00; 1 stop(s) via IAH; 347 minutes. Local airport times.
    • UA1747: AUS 2026-12-18 12:11:00 → IAH 2026-12-18 13:23:00; layover at IAH: 72 minutes.
    • UA551: IAH 2026-12-18 14:35:00 → PHL 2026-12-18 18:58:00.
  • United Airlines UA4575 / UA2337: PHL 2026-12-24 15:05:00 → AUS 2026-12-24 20:57:00; 1 stop(s) via IAD; 412 minutes. Local airport times.
    • UA4575: PHL 2026-12-24 15:05:00 → IAD 2026-12-24 16:18:00; layover at IAD: 102 minutes.
    • UA2337: IAD 2026-12-24 18:00:00 → AUS 2026-12-24 20:57:00.

2026-12-18 → 2026-12-25 · Axel-exclusive $354.00

  • Southwest Airlines WN438 / WN4923: AUS 2026-12-18 15:15:00 → PHL 2026-12-18 21:30:00; 1 stop(s) via STL; 315 minutes. Local airport times.
    • WN438: AUS 2026-12-18 15:15:00 → STL 2026-12-18 17:20:00; layover at STL: 60 minutes.
    • WN4923: STL 2026-12-18 18:20:00 → PHL 2026-12-18 21:30:00.
  • Southwest Airlines WN266 / WN1656: PHL 2026-12-25 17:05:00 → AUS 2026-12-25 21:35:00; 1 stop(s) via DAL; 330 minutes. Local airport times.
    • WN266: PHL 2026-12-25 17:05:00 → DAL 2026-12-25 19:30:00; layover at DAL: 60 minutes.
    • WN1656: DAL 2026-12-25 20:30:00 → AUS 2026-12-25 21:35:00.

2026-12-18 → 2026-12-25 · Axel-exclusive $372.00

  • United Airlines UA1747 / UA551: AUS 2026-12-18 12:11:00 → PHL 2026-12-18 18:58:00; 1 stop(s) via IAH; 347 minutes. Local airport times.
    • UA1747: AUS 2026-12-18 12:11:00 → IAH 2026-12-18 13:23:00; layover at IAH: 72 minutes.
    • UA551: IAH 2026-12-18 14:35:00 → PHL 2026-12-18 18:58:00.
  • United Airlines UA4575 / UA2337: PHL 2026-12-25 15:05:00 → AUS 2026-12-25 20:57:00; 1 stop(s) via IAD; 412 minutes. Local airport times.
    • UA4575: PHL 2026-12-25 15:05:00 → IAD 2026-12-25 16:18:00; layover at IAD: 102 minutes.
    • UA2337: IAD 2026-12-25 18:00:00 → AUS 2026-12-25 20:57:00.

2026-12-18 → 2026-12-26 · Axel-exclusive $354.00

  • Southwest Airlines WN438 / WN4923: AUS 2026-12-18 15:15:00 → PHL 2026-12-18 21:30:00; 1 stop(s) via STL; 315 minutes. Local airport times.
    • WN438: AUS 2026-12-18 15:15:00 → STL 2026-12-18 17:20:00; layover at STL: 60 minutes.
    • WN4923: STL 2026-12-18 18:20:00 → PHL 2026-12-18 21:30:00.
  • Southwest Airlines WN266 / WN1656: PHL 2026-12-26 17:05:00 → AUS 2026-12-26 21:35:00; 1 stop(s) via DAL; 330 minutes. Local airport times.
    • WN266: PHL 2026-12-26 17:05:00 → DAL 2026-12-26 19:30:00; layover at DAL: 60 minutes.
    • WN1656: DAL 2026-12-26 20:30:00 → AUS 2026-12-26 21:35:00.

2026-12-18 → 2026-12-26 · Axel-exclusive $372.00

  • United Airlines UA1747 / UA551: AUS 2026-12-18 12:11:00 → PHL 2026-12-18 18:58:00; 1 stop(s) via IAH; 347 minutes. Local airport times.
    • UA1747: AUS 2026-12-18 12:11:00 → IAH 2026-12-18 13:23:00; layover at IAH: 72 minutes.
    • UA551: IAH 2026-12-18 14:35:00 → PHL 2026-12-18 18:58:00.
  • United Airlines UA4575 / UA2337: PHL 2026-12-26 15:05:00 → AUS 2026-12-26 20:57:00; 1 stop(s) via IAD; 412 minutes. Local airport times.
    • UA4575: PHL 2026-12-26 15:05:00 → IAD 2026-12-26 16:18:00; layover at IAD: 102 minutes.
    • UA2337: IAD 2026-12-26 18:00:00 → AUS 2026-12-26 20:57:00.

2026-12-18 → 2026-12-28 · Axel-exclusive $354.00

  • Southwest Airlines WN438 / WN4923: AUS 2026-12-18 15:15:00 → PHL 2026-12-18 21:30:00; 1 stop(s) via STL; 315 minutes. Local airport times.
    • WN438: AUS 2026-12-18 15:15:00 → STL 2026-12-18 17:20:00; layover at STL: 60 minutes.
    • WN4923: STL 2026-12-18 18:20:00 → PHL 2026-12-18 21:30:00.
  • Southwest Airlines WN266 / WN1656: PHL 2026-12-28 17:05:00 → AUS 2026-12-28 21:35:00; 1 stop(s) via DAL; 330 minutes. Local airport times.
    • WN266: PHL 2026-12-28 17:05:00 → DAL 2026-12-28 19:30:00; layover at DAL: 60 minutes.
    • WN1656: DAL 2026-12-28 20:30:00 → AUS 2026-12-28 21:35:00.

2026-12-18 → 2026-12-28 · Axel-exclusive $372.00

  • United Airlines UA1747 / UA551: AUS 2026-12-18 12:11:00 → PHL 2026-12-18 18:58:00; 1 stop(s) via IAH; 347 minutes. Local airport times.
    • UA1747: AUS 2026-12-18 12:11:00 → IAH 2026-12-18 13:23:00; layover at IAH: 72 minutes.
    • UA551: IAH 2026-12-18 14:35:00 → PHL 2026-12-18 18:58:00.
  • United Airlines UA4575 / UA2337: PHL 2026-12-28 15:05:00 → AUS 2026-12-28 20:57:00; 1 stop(s) via IAD; 412 minutes. Local airport times.
    • UA4575: PHL 2026-12-28 15:05:00 → IAD 2026-12-28 16:18:00; layover at IAD: 102 minutes.
    • UA2337: IAD 2026-12-28 18:00:00 → AUS 2026-12-28 20:57:00.

2026-12-18 → 2026-12-29 · Axel-exclusive $354.00

  • Southwest Airlines WN438 / WN4923: AUS 2026-12-18 15:15:00 → PHL 2026-12-18 21:30:00; 1 stop(s) via STL; 315 minutes. Local airport times.
    • WN438: AUS 2026-12-18 15:15:00 → STL 2026-12-18 17:20:00; layover at STL: 60 minutes.
    • WN4923: STL 2026-12-18 18:20:00 → PHL 2026-12-18 21:30:00.
  • Southwest Airlines WN266 / WN1656: PHL 2026-12-29 17:05:00 → AUS 2026-12-29 21:35:00; 1 stop(s) via DAL; 330 minutes. Local airport times.
    • WN266: PHL 2026-12-29 17:05:00 → DAL 2026-12-29 19:30:00; layover at DAL: 60 minutes.
    • WN1656: DAL 2026-12-29 20:30:00 → AUS 2026-12-29 21:35:00.

2026-12-18 → 2026-12-29 · Axel-exclusive $372.00

  • United Airlines UA1747 / UA551: AUS 2026-12-18 12:11:00 → PHL 2026-12-18 18:58:00; 1 stop(s) via IAH; 347 minutes. Local airport times.
    • UA1747: AUS 2026-12-18 12:11:00 → IAH 2026-12-18 13:23:00; layover at IAH: 72 minutes.
    • UA551: IAH 2026-12-18 14:35:00 → PHL 2026-12-18 18:58:00.
  • United Airlines UA4575 / UA2337: PHL 2026-12-29 15:05:00 → AUS 2026-12-29 20:57:00; 1 stop(s) via IAD; 412 minutes. Local airport times.
    • UA4575: PHL 2026-12-29 15:05:00 → IAD 2026-12-29 16:18:00; layover at IAD: 102 minutes.
    • UA2337: IAD 2026-12-29 18:00:00 → AUS 2026-12-29 20:57:00.

2026-12-18 → 2026-12-30 · Axel-exclusive $354.00

  • Southwest Airlines WN438 / WN4923: AUS 2026-12-18 15:15:00 → PHL 2026-12-18 21:30:00; 1 stop(s) via STL; 315 minutes. Local airport times.
    • WN438: AUS 2026-12-18 15:15:00 → STL 2026-12-18 17:20:00; layover at STL: 60 minutes.
    • WN4923: STL 2026-12-18 18:20:00 → PHL 2026-12-18 21:30:00.
  • Southwest Airlines WN266 / WN1656: PHL 2026-12-30 17:05:00 → AUS 2026-12-30 21:35:00; 1 stop(s) via DAL; 330 minutes. Local airport times.
    • WN266: PHL 2026-12-30 17:05:00 → DAL 2026-12-30 19:30:00; layover at DAL: 60 minutes.
    • WN1656: DAL 2026-12-30 20:30:00 → AUS 2026-12-30 21:35:00.

2026-12-18 → 2026-12-30 · Axel-exclusive $372.00

  • United Airlines UA1747 / UA551: AUS 2026-12-18 12:11:00 → PHL 2026-12-18 18:58:00; 1 stop(s) via IAH; 347 minutes. Local airport times.
    • UA1747: AUS 2026-12-18 12:11:00 → IAH 2026-12-18 13:23:00; layover at IAH: 72 minutes.
    • UA551: IAH 2026-12-18 14:35:00 → PHL 2026-12-18 18:58:00.
  • United Airlines UA4575 / UA2337: PHL 2026-12-30 15:05:00 → AUS 2026-12-30 20:57:00; 1 stop(s) via IAD; 412 minutes. Local airport times.
    • UA4575: PHL 2026-12-30 15:05:00 → IAD 2026-12-30 16:18:00; layover at IAD: 102 minutes.
    • UA2337: IAD 2026-12-30 18:00:00 → AUS 2026-12-30 20:57:00.

2026-12-18 → 2027-01-01 · Axel-exclusive $343.68

  • Southwest Airlines WN438 / WN4923: AUS 2026-12-18 15:15:00 → PHL 2026-12-18 21:30:00; 1 stop(s) via STL; 315 minutes. Local airport times.
    • WN438: AUS 2026-12-18 15:15:00 → STL 2026-12-18 17:20:00; layover at STL: 60 minutes.
    • WN4923: STL 2026-12-18 18:20:00 → PHL 2026-12-18 21:30:00.
  • Southwest Airlines WN266 / WN1656: PHL 2027-01-01 17:05:00 → AUS 2027-01-01 21:35:00; 1 stop(s) via DAL; 330 minutes. Local airport times.
    • WN266: PHL 2027-01-01 17:05:00 → DAL 2027-01-01 19:30:00; layover at DAL: 60 minutes.
    • WN1656: DAL 2027-01-01 20:30:00 → AUS 2027-01-01 21:35:00.

2026-12-18 → 2027-01-01 · Axel-exclusive $361.15

  • United Airlines UA1747 / UA551: AUS 2026-12-18 12:11:00 → PHL 2026-12-18 18:58:00; 1 stop(s) via IAH; 347 minutes. Local airport times.
    • UA1747: AUS 2026-12-18 12:11:00 → IAH 2026-12-18 13:23:00; layover at IAH: 72 minutes.
    • UA551: IAH 2026-12-18 14:35:00 → PHL 2026-12-18 18:58:00.
  • United Airlines UA4575 / UA2337: PHL 2027-01-01 15:05:00 → AUS 2027-01-01 20:57:00; 1 stop(s) via IAD; 412 minutes. Local airport times.
    • UA4575: PHL 2027-01-01 15:05:00 → IAD 2027-01-01 16:18:00; layover at IAD: 102 minutes.
    • UA2337: IAD 2027-01-01 18:00:00 → AUS 2027-01-01 20:57:00.

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For AI assistants

  • This page: Austin (AUS) to Philadelphia (PHL) · Dec 18, 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 Austin to Philadelphia (PHL) 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. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. 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.