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Route overview: Philadelphia to London (LHR) flight deals

Philadelphia → London

Dec 6, 2026 · choose your return date

PHL → LHR1 adulteconomyOne way and round trips

28 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 6, 2026 · One wayAir CanadaUp to 1 stop each way$560.00 Dec 6, 2026 · One wayAmerican AirlinesNonstop$650.00 Dec 6, 2026 – Dec 8, 2026 · 2 nightsUnited AirlinesUp to 1 stop each way$790.00 Dec 6, 2026 – Dec 8, 2026 · 2 nightsAmerican AirlinesNonstop$850.00 Dec 6, 2026 – Dec 9, 2026 · 3 nightsUnited AirlinesUp to 1 stop each way$790.00 Dec 6, 2026 – Dec 9, 2026 · 3 nightsAmerican AirlinesNonstop$850.00 Dec 6, 2026 – Dec 10, 2026 · 4 nightsUnited AirlinesUp to 1 stop each way$790.00 Dec 6, 2026 – Dec 10, 2026 · 4 nightsAmerican AirlinesNonstop$850.00 Dec 6, 2026 – Dec 11, 2026 · 5 nightsUnited AirlinesUp to 1 stop each way$790.00 Dec 6, 2026 – Dec 11, 2026 · 5 nightsAmerican AirlinesNonstop$850.00 Dec 6, 2026 – Dec 12, 2026 · 6 nightsUnited AirlinesUp to 1 stop each way$790.00 Dec 6, 2026 – Dec 12, 2026 · 6 nightsAmerican AirlinesNonstop$850.00 Dec 6, 2026 – Dec 13, 2026 · 7 nightsUnited AirlinesUp to 1 stop each way$790.00 Dec 6, 2026 – Dec 13, 2026 · 7 nightsAmerican AirlinesNonstop$850.00 Dec 6, 2026 – Dec 14, 2026 · 8 nightsUnited AirlinesUp to 1 stop each way$790.00 Dec 6, 2026 – Dec 14, 2026 · 8 nightsAmerican AirlinesNonstop$850.00 Dec 6, 2026 – Dec 15, 2026 · 9 nightsUnited AirlinesUp to 1 stop each way$790.00 Dec 6, 2026 – Dec 15, 2026 · 9 nightsAmerican AirlinesNonstop$850.00 Dec 6, 2026 – Dec 16, 2026 · 10 nightsUnited AirlinesUp to 1 stop each way$790.00 Dec 6, 2026 – Dec 16, 2026 · 10 nightsAmerican AirlinesNonstop$850.00 Dec 6, 2026 – Dec 17, 2026 · 11 nightsUnited AirlinesUp to 1 stop each way$790.00 Dec 6, 2026 – Dec 17, 2026 · 11 nightsAmerican AirlinesNonstop$850.00 Dec 6, 2026 – Dec 18, 2026 · 12 nightsUnited AirlinesUp to 1 stop each way$908.50 Dec 6, 2026 – Dec 18, 2026 · 12 nightsAmerican AirlinesNonstop$977.50 Dec 6, 2026 – Dec 19, 2026 · 13 nightsUnited AirlinesUp to 1 stop each way$908.50 Dec 6, 2026 – Dec 19, 2026 · 13 nightsAmerican AirlinesNonstop$977.50 Dec 6, 2026 – Dec 20, 2026 · 14 nightsUnited AirlinesUp to 1 stop each way$908.50 Dec 6, 2026 – Dec 20, 2026 · 14 nightsAmerican AirlinesNonstop$977.50

Flights for your trip

  1. Sun, Dec 6 · One way

    Air Canada
    3:20 pmPHL
    10h 50m
    YUL · 2h 15m
    7:10 am+1LHR

    One-way total · 1 adult · Taxes included

  2. Sun, Dec 6 · One way

    American Airlines
    7:35 pmPHL
    7h 15m
    Nonstop
    7:50 am+1LHR

    One-way total · 1 adult · Taxes included

  3. Sun, Dec 6 – Tue, Dec 8

    United Airlines
    3:05 pmPHL
    10h 35m
    IAD · 2h 2m
    6:40 am+1LHR
    United Airlines
    12:05 pmLHR
    11h 57m
    IAD · 2h 10m
    7:02 pmPHL

    Round-trip total · 1 adult · Taxes included

  4. Sun, Dec 6 – Tue, Dec 8

    American Airlines
    7:35 pmPHL
    7h 15m
    Nonstop
    7:50 am+1LHR
    American Airlines
    10:35 amLHR
    8h 5m
    Nonstop
    1:40 pmPHL

    Round-trip total · 1 adult · Taxes included

  5. Sun, Dec 6 – Wed, Dec 9

    United Airlines
    3:05 pmPHL
    10h 35m
    IAD · 2h 2m
    6:40 am+1LHR
    United Airlines
    12:05 pmLHR
    11h 57m
    IAD · 2h 10m
    7:02 pmPHL

    Round-trip total · 1 adult · Taxes included

  6. Sun, Dec 6 – Wed, Dec 9

    American Airlines
    7:35 pmPHL
    7h 15m
    Nonstop
    7:50 am+1LHR
    American Airlines
    10:35 amLHR
    8h 5m
    Nonstop
    1:40 pmPHL

    Round-trip total · 1 adult · Taxes included

  7. Sun, Dec 6 – Thu, Dec 10

    United Airlines
    3:05 pmPHL
    10h 35m
    IAD · 2h 2m
    6:40 am+1LHR
    United Airlines
    12:05 pmLHR
    11h 57m
    IAD · 2h 10m
    7:02 pmPHL

    Round-trip total · 1 adult · Taxes included

  8. Sun, Dec 6 – Thu, Dec 10

    American Airlines
    7:35 pmPHL
    7h 15m
    Nonstop
    7:50 am+1LHR
    American Airlines
    10:35 amLHR
    8h 10m
    Nonstop
    1:45 pmPHL

    Round-trip total · 1 adult · Taxes included

  9. Sun, Dec 6 – Fri, Dec 11

    United Airlines
    3:05 pmPHL
    10h 35m
    IAD · 2h 2m
    6:40 am+1LHR
    United Airlines
    12:05 pmLHR
    11h 57m
    IAD · 2h 10m
    7:02 pmPHL

    Round-trip total · 1 adult · Taxes included

  10. Sun, Dec 6 – Fri, Dec 11

    American Airlines
    7:35 pmPHL
    7h 15m
    Nonstop
    7:50 am+1LHR
    American Airlines
    11:15 amLHR
    8h 5m
    Nonstop
    2:20 pmPHL

    Round-trip total · 1 adult · Taxes included

  11. Sun, Dec 6 – Sat, Dec 12

    United Airlines
    3:05 pmPHL
    10h 35m
    IAD · 2h 2m
    6:40 am+1LHR
    United Airlines
    12:05 pmLHR
    11h 57m
    IAD · 2h 10m
    7:02 pmPHL

    Round-trip total · 1 adult · Taxes included

  12. Sun, Dec 6 – Sat, Dec 12

    American Airlines
    7:35 pmPHL
    7h 15m
    Nonstop
    7:50 am+1LHR
    American Airlines
    10:35 amLHR
    8h 5m
    Nonstop
    1:40 pmPHL

    Round-trip total · 1 adult · Taxes included

  13. Sun, Dec 6 – Mon, Dec 14

    United Airlines
    3:05 pmPHL
    10h 35m
    IAD · 2h 2m
    6:40 am+1LHR
    United Airlines
    12:05 pmLHR
    11h 57m
    IAD · 2h 10m
    7:02 pmPHL

    Round-trip total · 1 adult · Taxes included

  14. Sun, Dec 6 – Mon, Dec 14

    American Airlines
    7:35 pmPHL
    7h 15m
    Nonstop
    7:50 am+1LHR
    American Airlines
    10:35 amLHR
    8h 5m
    Nonstop
    1:40 pmPHL

    Round-trip total · 1 adult · Taxes included

  15. Sun, Dec 6 – Tue, Dec 15

    United Airlines
    3:05 pmPHL
    10h 35m
    IAD · 2h 2m
    6:40 am+1LHR
    United Airlines
    12:05 pmLHR
    11h 57m
    IAD · 2h 10m
    7:02 pmPHL

    Round-trip total · 1 adult · Taxes included

  16. Sun, Dec 6 – Tue, Dec 15

    American Airlines
    7:35 pmPHL
    7h 15m
    Nonstop
    7:50 am+1LHR
    American Airlines
    10:35 amLHR
    8h 5m
    Nonstop
    1:40 pmPHL

    Round-trip total · 1 adult · Taxes included

  17. Sun, Dec 6 – Wed, Dec 16

    United Airlines
    3:05 pmPHL
    10h 35m
    IAD · 2h 2m
    6:40 am+1LHR
    United Airlines
    12:05 pmLHR
    11h 57m
    IAD · 2h 10m
    7:02 pmPHL

    Round-trip total · 1 adult · Taxes included

  18. Sun, Dec 6 – Wed, Dec 16

    American Airlines
    7:35 pmPHL
    7h 15m
    Nonstop
    7:50 am+1LHR
    American Airlines
    10:35 amLHR
    8h 5m
    Nonstop
    1:40 pmPHL

    Round-trip total · 1 adult · Taxes included

  19. Sun, Dec 6 – Thu, Dec 17

    United Airlines
    3:05 pmPHL
    10h 35m
    IAD · 2h 2m
    6:40 am+1LHR
    United Airlines
    12:05 pmLHR
    11h 57m
    IAD · 2h 10m
    7:02 pmPHL

    Round-trip total · 1 adult · Taxes included

  20. Sun, Dec 6 – Thu, Dec 17

    American Airlines
    7:35 pmPHL
    7h 15m
    Nonstop
    7:50 am+1LHR
    American Airlines
    10:35 amLHR
    8h 10m
    Nonstop
    1:45 pmPHL

    Round-trip total · 1 adult · Taxes included

  21. Sun, Dec 6 – Fri, Dec 18

    United Airlines
    3:05 pmPHL
    10h 35m
    IAD · 2h 2m
    6:40 am+1LHR
    United Airlines
    12:05 pmLHR
    11h 57m
    IAD · 2h 10m
    7:02 pmPHL

    Round-trip total · 1 adult · Taxes included

  22. Sun, Dec 6 – Fri, Dec 18

    American Airlines
    7:35 pmPHL
    7h 15m
    Nonstop
    7:50 am+1LHR
    American Airlines
    11:15 amLHR
    8h 5m
    Nonstop
    2:20 pmPHL

    Round-trip total · 1 adult · Taxes included

  23. Sun, Dec 6 – Sun, Dec 20

    United Airlines
    3:05 pmPHL
    10h 35m
    IAD · 2h 2m
    6:40 am+1LHR
    United Airlines
    12:05 pmLHR
    11h 57m
    IAD · 2h 10m
    7:02 pmPHL

    Round-trip total · 1 adult · Taxes included

  24. Sun, Dec 6 – Sun, Dec 20

    American Airlines
    7:35 pmPHL
    7h 15m
    Nonstop
    7:50 am+1LHR
    American Airlines
    10:35 amLHR
    8h 5m
    Nonstop
    1:40 pmPHL

    Round-trip total · 1 adult · Taxes included

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1 of 24

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PHL ⇄ LHR

Economy

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Explore this route

All dates for this routeDec 5, 2026 · Return optionsDec 7, 2026 · Return optionsHotels in London 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)
2026-12-06 · one wayAmerican AirlinesAA728Axel-exclusive $650.002026-10-29T01:55:51Z
2026-12-06 · one wayAir CanadaAC8862 + AC864Axel-exclusive $560.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-08American AirlinesAA728 / AA729Axel-exclusive $850.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-08United AirlinesUA4575 + UA918 / UA919 + UA4405Axel-exclusive $790.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-09American AirlinesAA728 / AA729Axel-exclusive $850.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-09United AirlinesUA4575 + UA918 / UA919 + UA4405Axel-exclusive $790.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-10American AirlinesAA728 / AA729Axel-exclusive $850.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-10United AirlinesUA4575 + UA918 / UA919 + UA4405Axel-exclusive $790.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-11American AirlinesAA728 / AA729Axel-exclusive $850.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-11United AirlinesUA4575 + UA918 / UA919 + UA4405Axel-exclusive $790.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-12American AirlinesAA728 / AA729Axel-exclusive $850.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-12United AirlinesUA4575 + UA918 / UA919 + UA4405Axel-exclusive $790.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-13American AirlinesAA728 / AA729Axel-exclusive $850.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-13United AirlinesUA4575 + UA918 / UA919 + UA4405Axel-exclusive $790.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-14American AirlinesAA728 / AA729Axel-exclusive $850.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-14United AirlinesUA4575 + UA918 / UA919 + UA4405Axel-exclusive $790.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-15American AirlinesAA728 / AA729Axel-exclusive $850.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-15United AirlinesUA4575 + UA918 / UA919 + UA4405Axel-exclusive $790.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-16American AirlinesAA728 / AA729Axel-exclusive $850.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-16United AirlinesUA4575 + UA918 / UA919 + UA4405Axel-exclusive $790.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-17American AirlinesAA728 / AA729Axel-exclusive $850.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-17United AirlinesUA4575 + UA918 / UA919 + UA4405Axel-exclusive $790.002026-10-29T01:55:51Z
2026-12-06 → 2026-12-18American AirlinesAA728 / AA729Axel-exclusive $977.502026-10-29T01:55:51Z
2026-12-06 → 2026-12-18United AirlinesUA4575 + UA918 / UA919 + UA4405Axel-exclusive $908.502026-10-29T01:55:51Z
2026-12-06 → 2026-12-19American AirlinesAA728 / AA729Axel-exclusive $977.502026-10-29T01:55:51Z
2026-12-06 → 2026-12-19United AirlinesUA4575 + UA918 / UA919 + UA4405Axel-exclusive $908.502026-10-29T01:55:51Z
2026-12-06 → 2026-12-20American AirlinesAA728 / AA729Axel-exclusive $977.502026-10-29T01:55:51Z
2026-12-06 → 2026-12-20United AirlinesUA4575 + UA918 / UA919 + UA4405Axel-exclusive $908.502026-10-29T01:55:51Z

Route overview: Philadelphia to London (LHR) flight deals

2026-12-06 · one way · Axel-exclusive $560.00

  • Air Canada AC8862 / AC864: PHL 2026-12-06 15:20:00 → LHR 2026-12-07 07:10:00; 1 stop(s) via YUL; 650 minutes. Local airport times.
    • AC8862: PHL 2026-12-06 15:20:00 → YUL 2026-12-06 16:55:00; layover at YUL: 135 minutes.
    • AC864: YUL 2026-12-06 19:10:00 → LHR 2026-12-07 07:10:00.

2026-12-06 · one way · Axel-exclusive $650.00

  • American Airlines AA728: PHL 2026-12-06 19:35:00 → LHR 2026-12-07 07:50:00; nonstop; 435 minutes. Local airport times.

2026-12-06 → 2026-12-08 · Axel-exclusive $790.00

  • United Airlines UA4575 / UA918: PHL 2026-12-06 15:05:00 → LHR 2026-12-07 06:40:00; 1 stop(s) via IAD; 635 minutes. Local airport times.
    • UA4575: PHL 2026-12-06 15:05:00 → IAD 2026-12-06 16:18:00; layover at IAD: 122 minutes.
    • UA918: IAD 2026-12-06 18:20:00 → LHR 2026-12-07 06:40:00.
  • United Airlines UA919 / UA4405: LHR 2026-12-08 12:05:00 → PHL 2026-12-08 19:02:00; 1 stop(s) via IAD; 717 minutes. Local airport times.
    • UA919: LHR 2026-12-08 12:05:00 → IAD 2026-12-08 15:40:00; layover at IAD: 130 minutes.
    • UA4405: IAD 2026-12-08 17:50:00 → PHL 2026-12-08 19:02:00.

2026-12-06 → 2026-12-08 · Axel-exclusive $850.00

  • American Airlines AA728: PHL 2026-12-06 19:35:00 → LHR 2026-12-07 07:50:00; nonstop; 435 minutes. Local airport times.
  • American Airlines AA729: LHR 2026-12-08 10:35:00 → PHL 2026-12-08 13:40:00; nonstop; 485 minutes. Local airport times.

2026-12-06 → 2026-12-09 · Axel-exclusive $790.00

  • United Airlines UA4575 / UA918: PHL 2026-12-06 15:05:00 → LHR 2026-12-07 06:40:00; 1 stop(s) via IAD; 635 minutes. Local airport times.
    • UA4575: PHL 2026-12-06 15:05:00 → IAD 2026-12-06 16:18:00; layover at IAD: 122 minutes.
    • UA918: IAD 2026-12-06 18:20:00 → LHR 2026-12-07 06:40:00.
  • United Airlines UA919 / UA4405: LHR 2026-12-09 12:05:00 → PHL 2026-12-09 19:02:00; 1 stop(s) via IAD; 717 minutes. Local airport times.
    • UA919: LHR 2026-12-09 12:05:00 → IAD 2026-12-09 15:40:00; layover at IAD: 130 minutes.
    • UA4405: IAD 2026-12-09 17:50:00 → PHL 2026-12-09 19:02:00.

2026-12-06 → 2026-12-09 · Axel-exclusive $850.00

  • American Airlines AA728: PHL 2026-12-06 19:35:00 → LHR 2026-12-07 07:50:00; nonstop; 435 minutes. Local airport times.
  • American Airlines AA729: LHR 2026-12-09 10:35:00 → PHL 2026-12-09 13:40:00; nonstop; 485 minutes. Local airport times.

2026-12-06 → 2026-12-10 · Axel-exclusive $790.00

  • United Airlines UA4575 / UA918: PHL 2026-12-06 15:05:00 → LHR 2026-12-07 06:40:00; 1 stop(s) via IAD; 635 minutes. Local airport times.
    • UA4575: PHL 2026-12-06 15:05:00 → IAD 2026-12-06 16:18:00; layover at IAD: 122 minutes.
    • UA918: IAD 2026-12-06 18:20:00 → LHR 2026-12-07 06:40:00.
  • United Airlines UA919 / UA4405: LHR 2026-12-10 12:05:00 → PHL 2026-12-10 19:02:00; 1 stop(s) via IAD; 717 minutes. Local airport times.
    • UA919: LHR 2026-12-10 12:05:00 → IAD 2026-12-10 15:40:00; layover at IAD: 130 minutes.
    • UA4405: IAD 2026-12-10 17:50:00 → PHL 2026-12-10 19:02:00.

2026-12-06 → 2026-12-10 · Axel-exclusive $850.00

  • American Airlines AA728: PHL 2026-12-06 19:35:00 → LHR 2026-12-07 07:50:00; nonstop; 435 minutes. Local airport times.
  • American Airlines AA729: LHR 2026-12-10 10:35:00 → PHL 2026-12-10 13:45:00; nonstop; 490 minutes. Local airport times.

2026-12-06 → 2026-12-11 · Axel-exclusive $790.00

  • United Airlines UA4575 / UA918: PHL 2026-12-06 15:05:00 → LHR 2026-12-07 06:40:00; 1 stop(s) via IAD; 635 minutes. Local airport times.
    • UA4575: PHL 2026-12-06 15:05:00 → IAD 2026-12-06 16:18:00; layover at IAD: 122 minutes.
    • UA918: IAD 2026-12-06 18:20:00 → LHR 2026-12-07 06:40:00.
  • United Airlines UA919 / UA4405: LHR 2026-12-11 12:05:00 → PHL 2026-12-11 19:02:00; 1 stop(s) via IAD; 717 minutes. Local airport times.
    • UA919: LHR 2026-12-11 12:05:00 → IAD 2026-12-11 15:40:00; layover at IAD: 130 minutes.
    • UA4405: IAD 2026-12-11 17:50:00 → PHL 2026-12-11 19:02:00.

2026-12-06 → 2026-12-11 · Axel-exclusive $850.00

  • American Airlines AA728: PHL 2026-12-06 19:35:00 → LHR 2026-12-07 07:50:00; nonstop; 435 minutes. Local airport times.
  • American Airlines AA729: LHR 2026-12-11 11:15:00 → PHL 2026-12-11 14:20:00; nonstop; 485 minutes. Local airport times.

2026-12-06 → 2026-12-12 · Axel-exclusive $790.00

  • United Airlines UA4575 / UA918: PHL 2026-12-06 15:05:00 → LHR 2026-12-07 06:40:00; 1 stop(s) via IAD; 635 minutes. Local airport times.
    • UA4575: PHL 2026-12-06 15:05:00 → IAD 2026-12-06 16:18:00; layover at IAD: 122 minutes.
    • UA918: IAD 2026-12-06 18:20:00 → LHR 2026-12-07 06:40:00.
  • United Airlines UA919 / UA4405: LHR 2026-12-12 12:05:00 → PHL 2026-12-12 19:02:00; 1 stop(s) via IAD; 717 minutes. Local airport times.
    • UA919: LHR 2026-12-12 12:05:00 → IAD 2026-12-12 15:40:00; layover at IAD: 130 minutes.
    • UA4405: IAD 2026-12-12 17:50:00 → PHL 2026-12-12 19:02:00.

2026-12-06 → 2026-12-12 · Axel-exclusive $850.00

  • American Airlines AA728: PHL 2026-12-06 19:35:00 → LHR 2026-12-07 07:50:00; nonstop; 435 minutes. Local airport times.
  • American Airlines AA729: LHR 2026-12-12 10:35:00 → PHL 2026-12-12 13:40:00; nonstop; 485 minutes. Local airport times.

2026-12-06 → 2026-12-14 · Axel-exclusive $790.00

  • United Airlines UA4575 / UA918: PHL 2026-12-06 15:05:00 → LHR 2026-12-07 06:40:00; 1 stop(s) via IAD; 635 minutes. Local airport times.
    • UA4575: PHL 2026-12-06 15:05:00 → IAD 2026-12-06 16:18:00; layover at IAD: 122 minutes.
    • UA918: IAD 2026-12-06 18:20:00 → LHR 2026-12-07 06:40:00.
  • United Airlines UA919 / UA4405: LHR 2026-12-14 12:05:00 → PHL 2026-12-14 19:02:00; 1 stop(s) via IAD; 717 minutes. Local airport times.
    • UA919: LHR 2026-12-14 12:05:00 → IAD 2026-12-14 15:40:00; layover at IAD: 130 minutes.
    • UA4405: IAD 2026-12-14 17:50:00 → PHL 2026-12-14 19:02:00.

2026-12-06 → 2026-12-14 · Axel-exclusive $850.00

  • American Airlines AA728: PHL 2026-12-06 19:35:00 → LHR 2026-12-07 07:50:00; nonstop; 435 minutes. Local airport times.
  • American Airlines AA729: LHR 2026-12-14 10:35:00 → PHL 2026-12-14 13:40:00; nonstop; 485 minutes. Local airport times.

2026-12-06 → 2026-12-15 · Axel-exclusive $790.00

  • United Airlines UA4575 / UA918: PHL 2026-12-06 15:05:00 → LHR 2026-12-07 06:40:00; 1 stop(s) via IAD; 635 minutes. Local airport times.
    • UA4575: PHL 2026-12-06 15:05:00 → IAD 2026-12-06 16:18:00; layover at IAD: 122 minutes.
    • UA918: IAD 2026-12-06 18:20:00 → LHR 2026-12-07 06:40:00.
  • United Airlines UA919 / UA4405: LHR 2026-12-15 12:05:00 → PHL 2026-12-15 19:02:00; 1 stop(s) via IAD; 717 minutes. Local airport times.
    • UA919: LHR 2026-12-15 12:05:00 → IAD 2026-12-15 15:40:00; layover at IAD: 130 minutes.
    • UA4405: IAD 2026-12-15 17:50:00 → PHL 2026-12-15 19:02:00.

2026-12-06 → 2026-12-15 · Axel-exclusive $850.00

  • American Airlines AA728: PHL 2026-12-06 19:35:00 → LHR 2026-12-07 07:50:00; nonstop; 435 minutes. Local airport times.
  • American Airlines AA729: LHR 2026-12-15 10:35:00 → PHL 2026-12-15 13:40:00; nonstop; 485 minutes. Local airport times.

2026-12-06 → 2026-12-16 · Axel-exclusive $790.00

  • United Airlines UA4575 / UA918: PHL 2026-12-06 15:05:00 → LHR 2026-12-07 06:40:00; 1 stop(s) via IAD; 635 minutes. Local airport times.
    • UA4575: PHL 2026-12-06 15:05:00 → IAD 2026-12-06 16:18:00; layover at IAD: 122 minutes.
    • UA918: IAD 2026-12-06 18:20:00 → LHR 2026-12-07 06:40:00.
  • United Airlines UA919 / UA4405: LHR 2026-12-16 12:05:00 → PHL 2026-12-16 19:02:00; 1 stop(s) via IAD; 717 minutes. Local airport times.
    • UA919: LHR 2026-12-16 12:05:00 → IAD 2026-12-16 15:40:00; layover at IAD: 130 minutes.
    • UA4405: IAD 2026-12-16 17:50:00 → PHL 2026-12-16 19:02:00.

2026-12-06 → 2026-12-16 · Axel-exclusive $850.00

  • American Airlines AA728: PHL 2026-12-06 19:35:00 → LHR 2026-12-07 07:50:00; nonstop; 435 minutes. Local airport times.
  • American Airlines AA729: LHR 2026-12-16 10:35:00 → PHL 2026-12-16 13:40:00; nonstop; 485 minutes. Local airport times.

2026-12-06 → 2026-12-17 · Axel-exclusive $790.00

  • United Airlines UA4575 / UA918: PHL 2026-12-06 15:05:00 → LHR 2026-12-07 06:40:00; 1 stop(s) via IAD; 635 minutes. Local airport times.
    • UA4575: PHL 2026-12-06 15:05:00 → IAD 2026-12-06 16:18:00; layover at IAD: 122 minutes.
    • UA918: IAD 2026-12-06 18:20:00 → LHR 2026-12-07 06:40:00.
  • United Airlines UA919 / UA4405: LHR 2026-12-17 12:05:00 → PHL 2026-12-17 19:02:00; 1 stop(s) via IAD; 717 minutes. Local airport times.
    • UA919: LHR 2026-12-17 12:05:00 → IAD 2026-12-17 15:40:00; layover at IAD: 130 minutes.
    • UA4405: IAD 2026-12-17 17:50:00 → PHL 2026-12-17 19:02:00.

2026-12-06 → 2026-12-17 · Axel-exclusive $850.00

  • American Airlines AA728: PHL 2026-12-06 19:35:00 → LHR 2026-12-07 07:50:00; nonstop; 435 minutes. Local airport times.
  • American Airlines AA729: LHR 2026-12-17 10:35:00 → PHL 2026-12-17 13:45:00; nonstop; 490 minutes. Local airport times.

2026-12-06 → 2026-12-18 · Axel-exclusive $908.50

  • United Airlines UA4575 / UA918: PHL 2026-12-06 15:05:00 → LHR 2026-12-07 06:40:00; 1 stop(s) via IAD; 635 minutes. Local airport times.
    • UA4575: PHL 2026-12-06 15:05:00 → IAD 2026-12-06 16:18:00; layover at IAD: 122 minutes.
    • UA918: IAD 2026-12-06 18:20:00 → LHR 2026-12-07 06:40:00.
  • United Airlines UA919 / UA4405: LHR 2026-12-18 12:05:00 → PHL 2026-12-18 19:02:00; 1 stop(s) via IAD; 717 minutes. Local airport times.
    • UA919: LHR 2026-12-18 12:05:00 → IAD 2026-12-18 15:40:00; layover at IAD: 130 minutes.
    • UA4405: IAD 2026-12-18 17:50:00 → PHL 2026-12-18 19:02:00.

2026-12-06 → 2026-12-18 · Axel-exclusive $977.50

  • American Airlines AA728: PHL 2026-12-06 19:35:00 → LHR 2026-12-07 07:50:00; nonstop; 435 minutes. Local airport times.
  • American Airlines AA729: LHR 2026-12-18 11:15:00 → PHL 2026-12-18 14:20:00; nonstop; 485 minutes. Local airport times.

2026-12-06 → 2026-12-20 · Axel-exclusive $908.50

  • United Airlines UA4575 / UA918: PHL 2026-12-06 15:05:00 → LHR 2026-12-07 06:40:00; 1 stop(s) via IAD; 635 minutes. Local airport times.
    • UA4575: PHL 2026-12-06 15:05:00 → IAD 2026-12-06 16:18:00; layover at IAD: 122 minutes.
    • UA918: IAD 2026-12-06 18:20:00 → LHR 2026-12-07 06:40:00.
  • United Airlines UA919 / UA4405: LHR 2026-12-20 12:05:00 → PHL 2026-12-20 19:02:00; 1 stop(s) via IAD; 717 minutes. Local airport times.
    • UA919: LHR 2026-12-20 12:05:00 → IAD 2026-12-20 15:40:00; layover at IAD: 130 minutes.
    • UA4405: IAD 2026-12-20 17:50:00 → PHL 2026-12-20 19:02:00.

2026-12-06 → 2026-12-20 · Axel-exclusive $977.50

  • American Airlines AA728: PHL 2026-12-06 19:35:00 → LHR 2026-12-07 07:50:00; nonstop; 435 minutes. Local airport times.
  • American Airlines AA729: LHR 2026-12-20 10:35:00 → PHL 2026-12-20 13:40:00; nonstop; 485 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Philadelphia (PHL) to London (LHR) · Dec 6, 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 Philadelphia to London (LHR) 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.