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Philadelphia → Seattle

Dec 21, 2026 · return Dec 23, 2026

PHL → SEA1 adulteconomyRound trip

10 flight options · 4 airlines

Nonstop flights

Mon, Dec 21 – Wed, Dec 23

Alaska Airlines
7:00 amPHL
6h 28m
Nonstop
10:28 amSEA
Alaska Airlines
9:28 pmSEA
5h 4m
Nonstop
5:32 am+1PHL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Wed, Dec 23

American Airlines
8:27 amPHL
6h 25m
Nonstop
11:52 amSEA
American Airlines
9:15 amSEA
5h 8m
Nonstop
5:23 pmPHL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Wed, Dec 23

Alaska Airlines
6:46 pmPHL
6h 10m
Nonstop
9:56 pmSEA
Alaska Airlines
9:28 pmSEA
5h 4m
Nonstop
5:32 am+1PHL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Wed, Dec 23

American Airlines
7:00 pmPHL
6h 38m
Nonstop
10:38 pmSEA
American Airlines
9:15 amSEA
5h 8m
Nonstop
5:23 pmPHL

Round-trip total · 1 adult · Taxes included

One-stop flights

Mon, Dec 21 – Wed, Dec 23

Southwest Airlines
5:15 pmPHL
8h 35m
DEN · 1h 15m
10:50 pmSEA
Southwest Airlines
6:30 amSEA
7h
MDW · 1h 10m
4:30 pmPHL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Wed, Dec 23

Delta Air Lines
5:34 amPHL
8h 8m
MSP · 1h 10m
10:42 amSEA
Delta Air Lines
6:00 amSEA
7h 35m
DTW · 1h 47m
4:35 pmPHL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Wed, Dec 23

Southwest Airlines
6:20 pmPHL
8h 15m
MDW · 1h 10m
11:35 pmSEA
Southwest Airlines
6:30 amSEA
7h
MDW · 1h 10m
4:30 pmPHL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Wed, Dec 23

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

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Wed, Dec 23

Delta Air Lines
7:15 amPHL
8h 21m
SLC · 1h
12:36 pmSEA
Delta Air Lines
6:00 amSEA
7h 35m
DTW · 1h 47m
4:35 pmPHL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Wed, Dec 23

Delta Air Lines
7:00 amPHL
6h 5m
Nonstop
10:05 amSEA
Delta Air Lines
6:00 amSEA
7h 35m
DTW · 1h 47m
4:35 pmPHL

Round-trip total · 1 adult · Taxes included

Make this trip yours

PHL ⇄ SEA

Economy

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

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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)
2026-12-21 → 2026-12-23Alaska AirlinesAS370 / AS371$539.002026-10-29T01:56:01Z
2026-12-21 → 2026-12-23American AirlinesAA2311 / AA771$560.002026-10-29T01:56:01Z
2026-12-21 → 2026-12-23Southwest AirlinesWN1270 + WN3141 / WN1550 + WN1623$511.002026-10-29T01:56:01Z
2026-12-21 → 2026-12-23Delta Air LinesDL2791 + DL868 / DL812 + DL1391$525.002026-10-29T01:56:01Z
2026-12-21 → 2026-12-23Alaska AirlinesAS443 / AS371$539.002026-10-29T01:56:01Z
2026-12-21 → 2026-12-23American AirlinesAA2500 / AA771$560.002026-10-29T01:56:01Z
2026-12-21 → 2026-12-23Southwest AirlinesWN2108 + WN3032 / WN1550 + WN1623$511.002026-10-29T01:56:01Z
2026-12-21 → 2026-12-23Delta Air LinesDL2968 + DL728 / DL812 + DL1391$525.002026-10-29T01:56:01Z
2026-12-21 → 2026-12-23Delta Air LinesDL2023 + DL2995 / DL812 + DL1391$525.002026-10-29T01:56:01Z
2026-12-21 → 2026-12-23Delta Air LinesDL2092 / DL812 + DL1391$549.502026-10-29T01:56:01Z

2026-12-21 → 2026-12-23 · $539.00

  • Alaska Airlines AS370: PHL 2026-12-21 07:00:00 → SEA 2026-12-21 10:28:00; nonstop; 388 minutes. Local airport times.
  • Alaska Airlines AS371: SEA 2026-12-23 21:28:00 → PHL 2026-12-24 05:32:00; nonstop; 304 minutes. Local airport times.

2026-12-21 → 2026-12-23 · $560.00

  • American Airlines AA2311: PHL 2026-12-21 08:27:00 → SEA 2026-12-21 11:52:00; nonstop; 385 minutes. Local airport times.
  • American Airlines AA771: SEA 2026-12-23 09:15:00 → PHL 2026-12-23 17:23:00; nonstop; 308 minutes. Local airport times.

2026-12-21 → 2026-12-23 · $511.00

  • Southwest Airlines WN1270 / WN3141: PHL 2026-12-21 17:15:00 → SEA 2026-12-21 22:50:00; 1 stop(s) via DEN; 515 minutes. Local airport times.
    • WN1270: PHL 2026-12-21 17:15:00 → DEN 2026-12-21 19:25:00; layover at DEN: 75 minutes.
    • WN3141: DEN 2026-12-21 20:40:00 → SEA 2026-12-21 22:50:00.
  • Southwest Airlines WN1550 / WN1623: SEA 2026-12-23 06:30:00 → PHL 2026-12-23 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
    • WN1550: SEA 2026-12-23 06:30:00 → MDW 2026-12-23 12:25:00; layover at MDW: 70 minutes.
    • WN1623: MDW 2026-12-23 13:35:00 → PHL 2026-12-23 16:30:00.

2026-12-21 → 2026-12-23 · $525.00

  • Delta Air Lines DL2791 / DL868: PHL 2026-12-21 05:34:00 → SEA 2026-12-21 10:42:00; 1 stop(s) via MSP; 488 minutes. Local airport times.
    • DL2791: PHL 2026-12-21 05:34:00 → MSP 2026-12-21 07:35:00; layover at MSP: 70 minutes.
    • DL868: MSP 2026-12-21 08:45:00 → SEA 2026-12-21 10:42:00.
  • Delta Air Lines DL812 / DL1391: SEA 2026-12-23 06:00:00 → PHL 2026-12-23 16:35:00; 1 stop(s) via DTW; 455 minutes. Local airport times.
    • DL812: SEA 2026-12-23 06:00:00 → DTW 2026-12-23 13:12:00; layover at DTW: 107 minutes.
    • DL1391: DTW 2026-12-23 14:59:00 → PHL 2026-12-23 16:35:00.

2026-12-21 → 2026-12-23 · $539.00

  • Alaska Airlines AS443: PHL 2026-12-21 18:46:00 → SEA 2026-12-21 21:56:00; nonstop; 370 minutes. Local airport times.
  • Alaska Airlines AS371: SEA 2026-12-23 21:28:00 → PHL 2026-12-24 05:32:00; nonstop; 304 minutes. Local airport times.

2026-12-21 → 2026-12-23 · $560.00

  • American Airlines AA2500: PHL 2026-12-21 19:00:00 → SEA 2026-12-21 22:38:00; nonstop; 398 minutes. Local airport times.
  • American Airlines AA771: SEA 2026-12-23 09:15:00 → PHL 2026-12-23 17:23:00; nonstop; 308 minutes. Local airport times.

2026-12-21 → 2026-12-23 · $511.00

  • Southwest Airlines WN2108 / WN3032: PHL 2026-12-21 18:20:00 → SEA 2026-12-21 23:35:00; 1 stop(s) via MDW; 495 minutes. Local airport times.
    • WN2108: PHL 2026-12-21 18:20:00 → MDW 2026-12-21 19:35:00; layover at MDW: 70 minutes.
    • WN3032: MDW 2026-12-21 20:45:00 → SEA 2026-12-21 23:35:00.
  • Southwest Airlines WN1550 / WN1623: SEA 2026-12-23 06:30:00 → PHL 2026-12-23 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
    • WN1550: SEA 2026-12-23 06:30:00 → MDW 2026-12-23 12:25:00; layover at MDW: 70 minutes.
    • WN1623: MDW 2026-12-23 13:35:00 → PHL 2026-12-23 16:30:00.

2026-12-21 → 2026-12-23 · $525.00

  • Delta Air Lines DL2968 / DL728: PHL 2026-12-21 09:43:00 → SEA 2026-12-21 14:55:00; 1 stop(s) via DTW; 492 minutes. Local airport times.
    • DL2968: PHL 2026-12-21 09:43:00 → DTW 2026-12-21 11:35:00; layover at DTW: 78 minutes.
    • DL728: DTW 2026-12-21 12:53:00 → SEA 2026-12-21 14:55:00.
  • Delta Air Lines DL812 / DL1391: SEA 2026-12-23 06:00:00 → PHL 2026-12-23 16:35:00; 1 stop(s) via DTW; 455 minutes. Local airport times.
    • DL812: SEA 2026-12-23 06:00:00 → DTW 2026-12-23 13:12:00; layover at DTW: 107 minutes.
    • DL1391: DTW 2026-12-23 14:59:00 → PHL 2026-12-23 16:35:00.

2026-12-21 → 2026-12-23 · $525.00

  • Delta Air Lines DL2023 / DL2995: PHL 2026-12-21 07:15:00 → SEA 2026-12-21 12:36:00; 1 stop(s) via SLC; 501 minutes. Local airport times.
    • DL2023: PHL 2026-12-21 07:15:00 → SLC 2026-12-21 10:15:00; layover at SLC: 60 minutes.
    • DL2995: SLC 2026-12-21 11:15:00 → SEA 2026-12-21 12:36:00.
  • Delta Air Lines DL812 / DL1391: SEA 2026-12-23 06:00:00 → PHL 2026-12-23 16:35:00; 1 stop(s) via DTW; 455 minutes. Local airport times.
    • DL812: SEA 2026-12-23 06:00:00 → DTW 2026-12-23 13:12:00; layover at DTW: 107 minutes.
    • DL1391: DTW 2026-12-23 14:59:00 → PHL 2026-12-23 16:35:00.

2026-12-21 → 2026-12-23 · $549.50

  • Delta Air Lines DL2092: PHL 2026-12-21 07:00:00 → SEA 2026-12-21 10:05:00; nonstop; 365 minutes. Local airport times.
  • Delta Air Lines DL812 / DL1391: SEA 2026-12-23 06:00:00 → PHL 2026-12-23 16:35:00; 1 stop(s) via DTW; 455 minutes. Local airport times.
    • DL812: SEA 2026-12-23 06:00:00 → DTW 2026-12-23 13:12:00; layover at DTW: 107 minutes.
    • DL1391: DTW 2026-12-23 14:59:00 → PHL 2026-12-23 16:35:00.

More dates for this route