Philadelphia (PHL) to Seattle (SEA), Nov 18–21, 2026: from $429 round trip

Philadelphia (PHL) to Seattle (SEA), Nov 18–21, 2026: from $429 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $429 round trip, Axel-exclusive, Southwest Airlines, 1 stop, Nov 18–21, 2026, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Hotels in Seattle for these trips

Hotels: under a trip, hotels in Seattle for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates.

• Hotels in Seattle for these nights (Nov 18–21, 2026 · 3 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $272 total · 4★ Hilton Seattle Airport & Conference Center, $290 total · 5★ Fairmont Olympic Hotel, $789 total

All hotels in Seattle

Route overview: Philadelphia to Seattle (SEA) flight deals

2026-11-18 → 2026-11-21 · Axel-exclusive $452.38

• Alaska Airlines AS370: PHL 2026-11-18 07:02:00 → SEA 2026-11-18 10:08:00; nonstop; 366 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-11-21 21:34:00 → PHL 2026-11-22 05:40:00; nonstop; 306 minutes. Local airport times.

2026-11-18 → 2026-11-21 · Axel-exclusive $470.00

• American Airlines AA2500: PHL 2026-11-18 19:00:00 → SEA 2026-11-18 22:38:00; nonstop; 398 minutes. Local airport times.
• American Airlines AA771: SEA 2026-11-21 09:15:00 → PHL 2026-11-21 17:23:00; nonstop; 308 minutes. Local airport times.

2026-11-18 → 2026-11-21 · Axel-exclusive $428.88

• Southwest Airlines WN1270 / WN3141: PHL 2026-11-18 17:15:00 → SEA 2026-11-18 22:50:00; 1 stop(s) via DEN; 515 minutes. Local airport times.
  • WN1270: PHL 2026-11-18 17:15:00 → DEN 2026-11-18 19:25:00; layover at DEN: 75 minutes.
  • WN3141: DEN 2026-11-18 20:40:00 → SEA 2026-11-18 22:50:00.
• Southwest Airlines WN1550 / WN1623: SEA 2026-11-21 06:30:00 → PHL 2026-11-21 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
  • WN1550: SEA 2026-11-21 06:30:00 → MDW 2026-11-21 12:25:00; layover at MDW: 70 minutes.
  • WN1623: MDW 2026-11-21 13:35:00 → PHL 2026-11-21 16:30:00.

2026-11-18 → 2026-11-21 · Axel-exclusive $434.75

• United Airlines UA1811 / UA1660: PHL 2026-11-18 09:45:00 → SEA 2026-11-18 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-11-18 09:45:00 → ORD 2026-11-18 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-11-18 12:45:00 → SEA 2026-11-18 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-11-21 05:05:00 → PHL 2026-11-21 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-11-21 05:05:00 → DEN 2026-11-21 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-11-21 10:15:00 → PHL 2026-11-21 15:51:00.

2026-11-18 → 2026-11-21 · Axel-exclusive $440.63

• Delta Air Lines DL2968 / DL728: PHL 2026-11-18 09:43:00 → SEA 2026-11-18 14:55:00; 1 stop(s) via DTW; 492 minutes. Local airport times.
  • DL2968: PHL 2026-11-18 09:43:00 → DTW 2026-11-18 11:35:00; layover at DTW: 78 minutes.
  • DL728: DTW 2026-11-18 12:53:00 → SEA 2026-11-18 14:55:00.
• Delta Air Lines DL567 / DL1100: SEA 2026-11-21 22:40:00 → PHL 2026-11-22 09:31:00; 1 stop(s) via ATL; 471 minutes. Local airport times.
  • DL567: SEA 2026-11-21 22:40:00 → ATL 2026-11-22 06:12:00; layover at ATL: 78 minutes.
  • DL1100: ATL 2026-11-22 07:30:00 → PHL 2026-11-22 09:31:00.

2026-11-18 → 2026-11-21 · Axel-exclusive $452.38

• Alaska Airlines AS443: PHL 2026-11-18 17:49:00 → SEA 2026-11-18 20:59:00; nonstop; 370 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-11-21 21:34:00 → PHL 2026-11-22 05:40:00; nonstop; 306 minutes. Local airport times.

2026-11-18 → 2026-11-21 · Axel-exclusive $470.00

• American Airlines AA467: PHL 2026-11-18 08:45:00 → SEA 2026-11-18 12:19:00; nonstop; 394 minutes. Local airport times.
• American Airlines AA771: SEA 2026-11-21 09:15:00 → PHL 2026-11-21 17:23:00; nonstop; 308 minutes. Local airport times.

2026-11-18 → 2026-11-21 · Axel-exclusive $428.88

• Southwest Airlines WN2108 / WN3032: PHL 2026-11-18 18:20:00 → SEA 2026-11-18 23:35:00; 1 stop(s) via MDW; 495 minutes. Local airport times.
  • WN2108: PHL 2026-11-18 18:20:00 → MDW 2026-11-18 19:35:00; layover at MDW: 70 minutes.
  • WN3032: MDW 2026-11-18 20:45:00 → SEA 2026-11-18 23:35:00.
• Southwest Airlines WN1550 / WN1623: SEA 2026-11-21 06:30:00 → PHL 2026-11-21 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
  • WN1550: SEA 2026-11-21 06:30:00 → MDW 2026-11-21 12:25:00; layover at MDW: 70 minutes.
  • WN1623: MDW 2026-11-21 13:35:00 → PHL 2026-11-21 16:30:00.

2026-11-18 → 2026-11-21 · Axel-exclusive $440.63

• Delta Air Lines DL2023 / DL2995: PHL 2026-11-18 07:15:00 → SEA 2026-11-18 12:36:00; 1 stop(s) via SLC; 501 minutes. Local airport times.
  • DL2023: PHL 2026-11-18 07:15:00 → SLC 2026-11-18 10:15:00; layover at SLC: 60 minutes.
  • DL2995: SLC 2026-11-18 11:15:00 → SEA 2026-11-18 12:36:00.
• Delta Air Lines DL567 / DL1100: SEA 2026-11-21 22:40:00 → PHL 2026-11-22 09:31:00; 1 stop(s) via ATL; 471 minutes. Local airport times.
  • DL567: SEA 2026-11-21 22:40:00 → ATL 2026-11-22 06:12:00; layover at ATL: 78 minutes.
  • DL1100: ATL 2026-11-22 07:30:00 → PHL 2026-11-22 09:31:00.

2026-11-18 → 2026-11-21 · Axel-exclusive $458.13

• Delta Air Lines DL2092: PHL 2026-11-18 07:00:00 → SEA 2026-11-18 10:05:00; nonstop; 365 minutes. Local airport times.
• Delta Air Lines DL567 / DL1100: SEA 2026-11-21 22:40:00 → PHL 2026-11-22 09:31:00; 1 stop(s) via ATL; 471 minutes. Local airport times.
  • DL567: SEA 2026-11-21 22:40:00 → ATL 2026-11-22 06:12:00; layover at ATL: 78 minutes.
  • DL1100: ATL 2026-11-22 07:30:00 → PHL 2026-11-22 09:31:00.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

Explore this route

• All dates for this route
• Nov 17, 2026 · Return options
• Nov 19, 2026 · Return options
• Hotels in Seattle with Axel

For AI assistants

• This page: Philadelphia (PHL) to Seattle (SEA) · Nov 18, 2026 · return Nov 21, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in Seattle for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the lowest saved totals among the shortlisted hotels in each star tier for those dates.
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