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Philadelphia → Seattle

Dec 13, 2026 · return Dec 18, 2026

PHL → SEA1 adulteconomyRound trip

11 flight options · 4 airlines

Nonstop flights

Sun, Dec 13 – Fri, Dec 18

Alaska Airlines
7:02 amPHL
6h 6m
Nonstop
10:08 amSEA
Alaska Airlines
9:35 pmSEA
5h 5m
Nonstop
5:40 am+1PHL

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Fri, Dec 18

American Airlines
7:00 pmPHL
6h 38m
Nonstop
10:38 pmSEA
American Airlines
11:17 pmSEA
5h 2m
Nonstop
7:19 am+1PHL

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Fri, Dec 18

Delta Air Lines
7:00 amPHL
6h 5m
Nonstop
10:05 amSEA
Delta Air Lines
9:38 pmSEA
5h 5m
Nonstop
5:43 am+1PHL

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Fri, Dec 18

Alaska Airlines
6:46 pmPHL
6h 10m
Nonstop
9:56 pmSEA
Alaska Airlines
9:35 pmSEA
5h 5m
Nonstop
5:40 am+1PHL

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Fri, Dec 18

American Airlines
8:27 amPHL
6h 25m
Nonstop
11:52 amSEA
American Airlines
11:17 pmSEA
5h 2m
Nonstop
7:19 am+1PHL

Round-trip total · 1 adult · Taxes included

One-stop flights

Sun, Dec 13 – Fri, Dec 18

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

Sun, Dec 13 – Fri, Dec 18

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

Sun, Dec 13 – Fri, Dec 18

Alaska Airlines
5:49 pmPHL
6h 10m
Nonstop
8:59 pmSEA
Alaska Airlines
11:40 pmSEA
7h 10m
ORD · 1h 8m
9:50 am+1PHL

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Fri, Dec 18

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

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Fri, Dec 18

Delta Air Lines
7:15 amPHL
8h 21m
SLC · 1h
12:36 pmSEA
Delta Air Lines
9:38 pmSEA
5h 5m
Nonstop
5:43 am+1PHL

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Fri, Dec 18

Delta Air Lines
5:34 amPHL
8h 8m
MSP · 1h 10m
10:42 amSEA
Delta Air Lines
9:38 pmSEA
5h 5m
Nonstop
5:43 am+1PHL

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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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 → 2026-12-18Alaska AirlinesAS370 / AS371$385.002026-10-29T01:56:01Z
2026-12-13 → 2026-12-18American AirlinesAA2500 / AA2500$400.002026-10-29T01:56:01Z
2026-12-13 → 2026-12-18Delta Air LinesDL2092 / DL1114$410.002026-10-29T01:56:01Z
2026-12-13 → 2026-12-18Southwest AirlinesWN2108 + WN3032 / WN1550 + WN1623$365.002026-10-29T01:56:01Z
2026-12-13 → 2026-12-18Alaska AirlinesAS443 / AS371$385.002026-10-29T01:56:01Z
2026-12-13 → 2026-12-18American AirlinesAA2311 / AA2500$400.002026-10-29T01:56:01Z
2026-12-13 → 2026-12-18Southwest AirlinesWN1270 + WN3141 / WN1550 + WN1623$365.002026-10-29T01:56:01Z
2026-12-13 → 2026-12-18Alaska AirlinesAS443 / AS328 + AA970$370.002026-10-29T01:56:01Z
2026-12-13 → 2026-12-18Delta Air LinesDL2968 + DL728 / DL1114$392.502026-10-29T01:56:01Z
2026-12-13 → 2026-12-18Delta Air LinesDL2023 + DL2995 / DL1114$392.502026-10-29T01:56:01Z
2026-12-13 → 2026-12-18Delta Air LinesDL2791 + DL868 / DL1114$392.502026-10-29T01:56:01Z

2026-12-13 → 2026-12-18 · $385.00

  • Alaska Airlines AS370: PHL 2026-12-13 07:02:00 → SEA 2026-12-13 10:08:00; nonstop; 366 minutes. Local airport times.
  • Alaska Airlines AS371: SEA 2026-12-18 21:35:00 → PHL 2026-12-19 05:40:00; nonstop; 305 minutes. Local airport times.

2026-12-13 → 2026-12-18 · $400.00

  • American Airlines AA2500: PHL 2026-12-13 19:00:00 → SEA 2026-12-13 22:38:00; nonstop; 398 minutes. Local airport times.
  • American Airlines AA2500: SEA 2026-12-18 23:17:00 → PHL 2026-12-19 07:19:00; nonstop; 302 minutes. Local airport times.

2026-12-13 → 2026-12-18 · $410.00

  • Delta Air Lines DL2092: PHL 2026-12-13 07:00:00 → SEA 2026-12-13 10:05:00; nonstop; 365 minutes. Local airport times.
  • Delta Air Lines DL1114: SEA 2026-12-18 21:38:00 → PHL 2026-12-19 05:43:00; nonstop; 305 minutes. Local airport times.

2026-12-13 → 2026-12-18 · $365.00

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

2026-12-13 → 2026-12-18 · $385.00

  • Alaska Airlines AS443: PHL 2026-12-13 18:46:00 → SEA 2026-12-13 21:56:00; nonstop; 370 minutes. Local airport times.
  • Alaska Airlines AS371: SEA 2026-12-18 21:35:00 → PHL 2026-12-19 05:40:00; nonstop; 305 minutes. Local airport times.

2026-12-13 → 2026-12-18 · $400.00

  • American Airlines AA2311: PHL 2026-12-13 08:27:00 → SEA 2026-12-13 11:52:00; nonstop; 385 minutes. Local airport times.
  • American Airlines AA2500: SEA 2026-12-18 23:17:00 → PHL 2026-12-19 07:19:00; nonstop; 302 minutes. Local airport times.

2026-12-13 → 2026-12-18 · $365.00

  • Southwest Airlines WN1270 / WN3141: PHL 2026-12-13 17:15:00 → SEA 2026-12-13 22:50:00; 1 stop(s) via DEN; 515 minutes. Local airport times.
    • WN1270: PHL 2026-12-13 17:15:00 → DEN 2026-12-13 19:25:00; layover at DEN: 75 minutes.
    • WN3141: DEN 2026-12-13 20:40:00 → SEA 2026-12-13 22:50:00.
  • Southwest Airlines WN1550 / WN1623: SEA 2026-12-18 06:30:00 → PHL 2026-12-18 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
    • WN1550: SEA 2026-12-18 06:30:00 → MDW 2026-12-18 12:25:00; layover at MDW: 70 minutes.
    • WN1623: MDW 2026-12-18 13:35:00 → PHL 2026-12-18 16:30:00.

2026-12-13 → 2026-12-18 · $370.00

  • Alaska Airlines AS443: PHL 2026-12-13 17:49:00 → SEA 2026-12-13 20:59:00; nonstop; 370 minutes. Local airport times.
  • Alaska Airlines AS328 / AA970: SEA 2026-12-18 23:40:00 → PHL 2026-12-19 09:50:00; 1 stop(s) via ORD; 430 minutes. Local airport times.
    • AS328: SEA 2026-12-18 23:40:00 → ORD 2026-12-19 05:37:00; layover at ORD: 68 minutes.
    • AA970: ORD 2026-12-19 06:45:00 → PHL 2026-12-19 09:50:00.

2026-12-13 → 2026-12-18 · $392.50

  • Delta Air Lines DL2968 / DL728: PHL 2026-12-13 09:43:00 → SEA 2026-12-13 14:55:00; 1 stop(s) via DTW; 492 minutes. Local airport times.
    • DL2968: PHL 2026-12-13 09:43:00 → DTW 2026-12-13 11:35:00; layover at DTW: 78 minutes.
    • DL728: DTW 2026-12-13 12:53:00 → SEA 2026-12-13 14:55:00.
  • Delta Air Lines DL1114: SEA 2026-12-18 21:38:00 → PHL 2026-12-19 05:43:00; nonstop; 305 minutes. Local airport times.

2026-12-13 → 2026-12-18 · $392.50

  • Delta Air Lines DL2023 / DL2995: PHL 2026-12-13 07:15:00 → SEA 2026-12-13 12:36:00; 1 stop(s) via SLC; 501 minutes. Local airport times.
    • DL2023: PHL 2026-12-13 07:15:00 → SLC 2026-12-13 10:15:00; layover at SLC: 60 minutes.
    • DL2995: SLC 2026-12-13 11:15:00 → SEA 2026-12-13 12:36:00.
  • Delta Air Lines DL1114: SEA 2026-12-18 21:38:00 → PHL 2026-12-19 05:43:00; nonstop; 305 minutes. Local airport times.

2026-12-13 → 2026-12-18 · $392.50

  • Delta Air Lines DL2791 / DL868: PHL 2026-12-13 05:34:00 → SEA 2026-12-13 10:42:00; 1 stop(s) via MSP; 488 minutes. Local airport times.
    • DL2791: PHL 2026-12-13 05:34:00 → MSP 2026-12-13 07:35:00; layover at MSP: 70 minutes.
    • DL868: MSP 2026-12-13 08:45:00 → SEA 2026-12-13 10:42:00.
  • Delta Air Lines DL1114: SEA 2026-12-18 21:38:00 → PHL 2026-12-19 05:43:00; nonstop; 305 minutes. Local airport times.

More dates for this route