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Philadelphia → Seattle

Jan 21, 2027 · return Feb 4, 2027

PHL → SEA1 adulteconomyRound trip

11 flight options · 5 airlines

Nonstop flights

Thu, Jan 21 – Thu, Feb 4

Alaska Airlines
6:11 pmPHL
6h 42m
Nonstop
9:53 pmSEA
Alaska Airlines
8:32 amSEA
5h 13m
Nonstop
4:45 pmPHL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

American Airlines
6:35 pmPHL
6h 24m
Nonstop
9:59 pmSEA
American Airlines
12:20 pmSEA
5h 5m
Nonstop
8:25 pmPHL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

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

Thu, Jan 21 – Thu, Feb 4

Alaska Airlines
7:00 amPHL
6h 28m
Nonstop
10:28 amSEA
Alaska Airlines
8:32 amSEA
5h 13m
Nonstop
4:45 pmPHL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

American Airlines
8:45 amPHL
6h 34m
Nonstop
12:19 pmSEA
American Airlines
12:20 pmSEA
5h 5m
Nonstop
8:25 pmPHL

Round-trip total · 1 adult · Taxes included

One-stop flights

Thu, Jan 21 – Thu, Feb 4

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

Thu, Jan 21 – Thu, Feb 4

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

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

Alaska Airlines
7:02 amPHL
6h 6m
Nonstop
10:08 amSEA
Alaska Airlines
11:40 pmSEA
7h 10m
ORD · 1h 8m
9:50 am+1PHL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

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

Thu, Jan 21 – Thu, Feb 4

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

Thu, Jan 21 – Thu, Feb 4

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

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)
2027-01-21 → 2027-02-04Alaska AirlinesAS443 / AS442$365.762026-10-29T01:56:01Z
2027-01-21 → 2027-02-04American AirlinesAA2500 / AA2358$380.002026-10-29T01:56:01Z
2027-01-21 → 2027-02-04Delta Air LinesDL2092 / DL1114$389.502026-10-29T01:56:01Z
2027-01-21 → 2027-02-04Southwest AirlinesWN2108 + WN3032 / WN1550 + WN1623$346.762026-10-29T01:56:01Z
2027-01-21 → 2027-02-04United AirlinesUA1811 + UA1660 / UA1686 + UA225$351.502026-10-29T01:56:01Z
2027-01-21 → 2027-02-04Alaska AirlinesAS370 / AS442$365.762026-10-29T01:56:01Z
2027-01-21 → 2027-02-04American AirlinesAA467 / AA2358$380.002026-10-29T01:56:01Z
2027-01-21 → 2027-02-04Alaska AirlinesAS370 / AS328 + AA970$351.512026-10-29T01:56:01Z
2027-01-21 → 2027-02-04Delta Air LinesDL2791 + DL868 / DL1114$372.882026-10-29T01:56:01Z
2027-01-21 → 2027-02-04Delta Air LinesDL2023 + DL2995 / DL1114$372.882026-10-29T01:56:01Z
2027-01-21 → 2027-02-04Delta Air LinesDL2968 + DL728 / DL1114$372.882026-10-29T01:56:01Z

2027-01-21 → 2027-02-04 · $365.76

  • Alaska Airlines AS443: PHL 2027-01-21 18:11:00 → SEA 2027-01-21 21:53:00; nonstop; 402 minutes. Local airport times.
  • Alaska Airlines AS442: SEA 2027-02-04 08:32:00 → PHL 2027-02-04 16:45:00; nonstop; 313 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $380.00

  • American Airlines AA2500: PHL 2027-01-21 18:35:00 → SEA 2027-01-21 21:59:00; nonstop; 384 minutes. Local airport times.
  • American Airlines AA2358: SEA 2027-02-04 12:20:00 → PHL 2027-02-04 20:25:00; nonstop; 305 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $389.50

  • Delta Air Lines DL2092: PHL 2027-01-21 07:00:00 → SEA 2027-01-21 10:05:00; nonstop; 365 minutes. Local airport times.
  • Delta Air Lines DL1114: SEA 2027-02-04 21:38:00 → PHL 2027-02-05 05:43:00; nonstop; 305 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $346.76

  • Southwest Airlines WN2108 / WN3032: PHL 2027-01-21 18:20:00 → SEA 2027-01-21 23:35:00; 1 stop(s) via MDW; 495 minutes. Local airport times.
    • WN2108: PHL 2027-01-21 18:20:00 → MDW 2027-01-21 19:35:00; layover at MDW: 70 minutes.
    • WN3032: MDW 2027-01-21 20:45:00 → SEA 2027-01-21 23:35:00.
  • Southwest Airlines WN1550 / WN1623: SEA 2027-02-04 06:30:00 → PHL 2027-02-04 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
    • WN1550: SEA 2027-02-04 06:30:00 → MDW 2027-02-04 12:25:00; layover at MDW: 70 minutes.
    • WN1623: MDW 2027-02-04 13:35:00 → PHL 2027-02-04 16:30:00.

2027-01-21 → 2027-02-04 · $351.50

  • United Airlines UA1811 / UA1660: PHL 2027-01-21 09:45:00 → SEA 2027-01-21 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
    • UA1811: PHL 2027-01-21 09:45:00 → ORD 2027-01-21 11:20:00; layover at ORD: 85 minutes.
    • UA1660: ORD 2027-01-21 12:45:00 → SEA 2027-01-21 15:32:00.
  • United Airlines UA1686 / UA225: SEA 2027-02-04 05:05:00 → PHL 2027-02-04 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
    • UA1686: SEA 2027-02-04 05:05:00 → DEN 2027-02-04 08:42:00; layover at DEN: 93 minutes.
    • UA225: DEN 2027-02-04 10:15:00 → PHL 2027-02-04 15:51:00.

2027-01-21 → 2027-02-04 · $365.76

  • Alaska Airlines AS370: PHL 2027-01-21 07:00:00 → SEA 2027-01-21 10:28:00; nonstop; 388 minutes. Local airport times.
  • Alaska Airlines AS442: SEA 2027-02-04 08:32:00 → PHL 2027-02-04 16:45:00; nonstop; 313 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $380.00

  • American Airlines AA467: PHL 2027-01-21 08:45:00 → SEA 2027-01-21 12:19:00; nonstop; 394 minutes. Local airport times.
  • American Airlines AA2358: SEA 2027-02-04 12:20:00 → PHL 2027-02-04 20:25:00; nonstop; 305 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $351.51

  • Alaska Airlines AS370: PHL 2027-01-21 07:02:00 → SEA 2027-01-21 10:08:00; nonstop; 366 minutes. Local airport times.
  • Alaska Airlines AS328 / AA970: SEA 2027-02-04 23:40:00 → PHL 2027-02-05 09:50:00; 1 stop(s) via ORD; 430 minutes. Local airport times.
    • AS328: SEA 2027-02-04 23:40:00 → ORD 2027-02-05 05:37:00; layover at ORD: 68 minutes.
    • AA970: ORD 2027-02-05 06:45:00 → PHL 2027-02-05 09:50:00.

2027-01-21 → 2027-02-04 · $372.88

  • Delta Air Lines DL2791 / DL868: PHL 2027-01-21 05:34:00 → SEA 2027-01-21 10:42:00; 1 stop(s) via MSP; 488 minutes. Local airport times.
    • DL2791: PHL 2027-01-21 05:34:00 → MSP 2027-01-21 07:35:00; layover at MSP: 70 minutes.
    • DL868: MSP 2027-01-21 08:45:00 → SEA 2027-01-21 10:42:00.
  • Delta Air Lines DL1114: SEA 2027-02-04 21:38:00 → PHL 2027-02-05 05:43:00; nonstop; 305 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $372.88

  • Delta Air Lines DL2023 / DL2995: PHL 2027-01-21 07:15:00 → SEA 2027-01-21 12:36:00; 1 stop(s) via SLC; 501 minutes. Local airport times.
    • DL2023: PHL 2027-01-21 07:15:00 → SLC 2027-01-21 10:15:00; layover at SLC: 60 minutes.
    • DL2995: SLC 2027-01-21 11:15:00 → SEA 2027-01-21 12:36:00.
  • Delta Air Lines DL1114: SEA 2027-02-04 21:38:00 → PHL 2027-02-05 05:43:00; nonstop; 305 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $372.88

  • Delta Air Lines DL2968 / DL728: PHL 2027-01-21 09:43:00 → SEA 2027-01-21 14:55:00; 1 stop(s) via DTW; 492 minutes. Local airport times.
    • DL2968: PHL 2027-01-21 09:43:00 → DTW 2027-01-21 11:35:00; layover at DTW: 78 minutes.
    • DL728: DTW 2027-01-21 12:53:00 → SEA 2027-01-21 14:55:00.
  • Delta Air Lines DL1114: SEA 2027-02-04 21:38:00 → PHL 2027-02-05 05:43:00; nonstop; 305 minutes. Local airport times.

More dates for this route