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Seattle → Philadelphia

Dec 13, 2026 · return Dec 17, 2026

SEA → PHL1 adulteconomyRound trip

10 flight options · 4 airlines

Nonstop flights

Sun, Dec 13 – Thu, Dec 17

Alaska Airlines
9:35 pmSEA
5h 5m
Nonstop
5:40 am+1PHL
Alaska Airlines
7:00 amPHL
6h 28m
Nonstop
10:28 amSEA

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Thu, Dec 17

American Airlines
12:34 pmSEA
5h 1m
Nonstop
8:35 pmPHL
American Airlines
8:45 amPHL
6h 34m
Nonstop
12:19 pmSEA

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Thu, Dec 17

Alaska Airlines
9:05 amSEA
5h 3m
Nonstop
5:08 pmPHL
Alaska Airlines
7:00 amPHL
6h 28m
Nonstop
10:28 amSEA

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Thu, Dec 17

American Airlines
9:15 amSEA
5h 7m
Nonstop
5:22 pmPHL
American Airlines
8:45 amPHL
6h 34m
Nonstop
12:19 pmSEA

Round-trip total · 1 adult · Taxes included

One-stop flights

Sun, Dec 13 – Thu, Dec 17

United Airlines
5:05 amSEA
7h 46m
DEN · 1h 33m
3:51 pmPHL
United Airlines
9:45 amPHL
8h 47m
ORD · 1h 25m
3:32 pmSEA

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Thu, Dec 17

Delta Air Lines
10:40 pmSEA
7h 51m
ATL · 1h 18m
9:31 am+1PHL
Delta Air Lines
9:43 amPHL
8h 12m
DTW · 1h 18m
2:55 pmSEA

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Thu, Dec 17

Alaska Airlines
11:40 pmSEA
7h 10m
ORD · 1h 8m
9:50 am+1PHL
Alaska Airlines
7:00 amPHL
6h 28m
Nonstop
10:28 amSEA

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Thu, Dec 17

Delta Air Lines
6:00 amSEA
7h 35m
DTW · 1h 47m
4:35 pmPHL
Delta Air Lines
9:43 amPHL
8h 12m
DTW · 1h 18m
2:55 pmSEA

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Thu, Dec 17

Delta Air Lines
1:50 pmSEA
7h 4m
MSP · 1h 9m
11:54 pmPHL
Delta Air Lines
9:43 amPHL
8h 12m
DTW · 1h 18m
2:55 pmSEA

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Thu, Dec 17

Delta Air Lines
9:38 pmSEA
5h 5m
Nonstop
5:43 am+1PHL
Delta Air Lines
9:43 amPHL
8h 12m
DTW · 1h 18m
2:55 pmSEA

Round-trip total · 1 adult · Taxes included

Make this trip yours

SEA ⇄ PHL

Economy

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

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Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Alaska 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.
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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

More dates

All dates for this routeNov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
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.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-13 → 2026-12-17Alaska AirlinesAS371 / AS370$395.002026-10-29T01:16:02Z
2026-12-13 → 2026-12-17American AirlinesAA2203 / AA467$410.002026-10-29T01:16:02Z
2026-12-13 → 2026-12-17United AirlinesUA1686 + UA225 / UA1811 + UA1660$375.002026-10-29T01:16:02Z
2026-12-13 → 2026-12-17Delta Air LinesDL567 + DL1100 / DL2968 + DL728$380.002026-10-29T01:16:02Z
2026-12-13 → 2026-12-17Alaska AirlinesAS442 / AS370$395.002026-10-29T01:16:02Z
2026-12-13 → 2026-12-17American AirlinesAA2882 / AA467$410.002026-10-29T01:16:02Z
2026-12-13 → 2026-12-17Alaska AirlinesAS328 + AA970 / AS370$375.002026-10-29T01:16:02Z
2026-12-13 → 2026-12-17Delta Air LinesDL812 + DL1391 / DL2968 + DL728$380.002026-10-29T01:16:02Z
2026-12-13 → 2026-12-17Delta Air LinesDL942 + DL2703 / DL2968 + DL728$380.002026-10-29T01:16:02Z
2026-12-13 → 2026-12-17Delta Air LinesDL1114 / DL2968 + DL728$405.002026-10-29T01:16:02Z

2026-12-13 → 2026-12-17 · $395.00

  • Alaska Airlines AS371: SEA 2026-12-13 21:35:00 → PHL 2026-12-14 05:40:00; nonstop; 305 minutes. Local airport times.
  • Alaska Airlines AS370: PHL 2026-12-17 07:00:00 → SEA 2026-12-17 10:28:00; nonstop; 388 minutes. Local airport times.

2026-12-13 → 2026-12-17 · $410.00

  • American Airlines AA2203: SEA 2026-12-13 12:34:00 → PHL 2026-12-13 20:35:00; nonstop; 301 minutes. Local airport times.
  • American Airlines AA467: PHL 2026-12-17 08:45:00 → SEA 2026-12-17 12:19:00; nonstop; 394 minutes. Local airport times.

2026-12-13 → 2026-12-17 · $375.00

  • United Airlines UA1686 / UA225: SEA 2026-12-13 05:05:00 → PHL 2026-12-13 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
    • UA1686: SEA 2026-12-13 05:05:00 → DEN 2026-12-13 08:42:00; layover at DEN: 93 minutes.
    • UA225: DEN 2026-12-13 10:15:00 → PHL 2026-12-13 15:51:00.
  • United Airlines UA1811 / UA1660: PHL 2026-12-17 09:45:00 → SEA 2026-12-17 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
    • UA1811: PHL 2026-12-17 09:45:00 → ORD 2026-12-17 11:20:00; layover at ORD: 85 minutes.
    • UA1660: ORD 2026-12-17 12:45:00 → SEA 2026-12-17 15:32:00.

2026-12-13 → 2026-12-17 · $380.00

  • Delta Air Lines DL567 / DL1100: SEA 2026-12-13 22:40:00 → PHL 2026-12-14 09:31:00; 1 stop(s) via ATL; 471 minutes. Local airport times.
    • DL567: SEA 2026-12-13 22:40:00 → ATL 2026-12-14 06:12:00; layover at ATL: 78 minutes.
    • DL1100: ATL 2026-12-14 07:30:00 → PHL 2026-12-14 09:31:00.
  • Delta Air Lines DL2968 / DL728: PHL 2026-12-17 09:43:00 → SEA 2026-12-17 14:55:00; 1 stop(s) via DTW; 492 minutes. Local airport times.
    • DL2968: PHL 2026-12-17 09:43:00 → DTW 2026-12-17 11:35:00; layover at DTW: 78 minutes.
    • DL728: DTW 2026-12-17 12:53:00 → SEA 2026-12-17 14:55:00.

2026-12-13 → 2026-12-17 · $395.00

  • Alaska Airlines AS442: SEA 2026-12-13 09:05:00 → PHL 2026-12-13 17:08:00; nonstop; 303 minutes. Local airport times.
  • Alaska Airlines AS370: PHL 2026-12-17 07:00:00 → SEA 2026-12-17 10:28:00; nonstop; 388 minutes. Local airport times.

2026-12-13 → 2026-12-17 · $410.00

  • American Airlines AA2882: SEA 2026-12-13 09:15:00 → PHL 2026-12-13 17:22:00; nonstop; 307 minutes. Local airport times.
  • American Airlines AA467: PHL 2026-12-17 08:45:00 → SEA 2026-12-17 12:19:00; nonstop; 394 minutes. Local airport times.

2026-12-13 → 2026-12-17 · $375.00

  • Alaska Airlines AS328 / AA970: SEA 2026-12-13 23:40:00 → PHL 2026-12-14 09:50:00; 1 stop(s) via ORD; 430 minutes. Local airport times.
    • AS328: SEA 2026-12-13 23:40:00 → ORD 2026-12-14 05:37:00; layover at ORD: 68 minutes.
    • AA970: ORD 2026-12-14 06:45:00 → PHL 2026-12-14 09:50:00.
  • Alaska Airlines AS370: PHL 2026-12-17 07:00:00 → SEA 2026-12-17 10:28:00; nonstop; 388 minutes. Local airport times.

2026-12-13 → 2026-12-17 · $380.00

  • Delta Air Lines DL812 / DL1391: SEA 2026-12-13 06:00:00 → PHL 2026-12-13 16:35:00; 1 stop(s) via DTW; 455 minutes. Local airport times.
    • DL812: SEA 2026-12-13 06:00:00 → DTW 2026-12-13 13:12:00; layover at DTW: 107 minutes.
    • DL1391: DTW 2026-12-13 14:59:00 → PHL 2026-12-13 16:35:00.
  • Delta Air Lines DL2968 / DL728: PHL 2026-12-17 09:43:00 → SEA 2026-12-17 14:55:00; 1 stop(s) via DTW; 492 minutes. Local airport times.
    • DL2968: PHL 2026-12-17 09:43:00 → DTW 2026-12-17 11:35:00; layover at DTW: 78 minutes.
    • DL728: DTW 2026-12-17 12:53:00 → SEA 2026-12-17 14:55:00.

2026-12-13 → 2026-12-17 · $380.00

  • Delta Air Lines DL942 / DL2703: SEA 2026-12-13 13:50:00 → PHL 2026-12-13 23:54:00; 1 stop(s) via MSP; 424 minutes. Local airport times.
    • DL942: SEA 2026-12-13 13:50:00 → MSP 2026-12-13 19:11:00; layover at MSP: 69 minutes.
    • DL2703: MSP 2026-12-13 20:20:00 → PHL 2026-12-13 23:54:00.
  • Delta Air Lines DL2968 / DL728: PHL 2026-12-17 09:43:00 → SEA 2026-12-17 14:55:00; 1 stop(s) via DTW; 492 minutes. Local airport times.
    • DL2968: PHL 2026-12-17 09:43:00 → DTW 2026-12-17 11:35:00; layover at DTW: 78 minutes.
    • DL728: DTW 2026-12-17 12:53:00 → SEA 2026-12-17 14:55:00.

2026-12-13 → 2026-12-17 · $405.00

  • Delta Air Lines DL1114: SEA 2026-12-13 21:38:00 → PHL 2026-12-14 05:43:00; nonstop; 305 minutes. Local airport times.
  • Delta Air Lines DL2968 / DL728: PHL 2026-12-17 09:43:00 → SEA 2026-12-17 14:55:00; 1 stop(s) via DTW; 492 minutes. Local airport times.
    • DL2968: PHL 2026-12-17 09:43:00 → DTW 2026-12-17 11:35:00; layover at DTW: 78 minutes.
    • DL728: DTW 2026-12-17 12:53:00 → SEA 2026-12-17 14:55:00.

More dates for this route