Philadelphia (PHL) to Seattle (SEA), Dec 1, 2026: round trips from $370, one way from $195

Philadelphia (PHL) to Seattle (SEA), Dec 1, 2026: round trips from $370, one way from $195 on Axel, checked Nov 10, 2026. Lowest published fares: $370 round trip, Axel-exclusive, United Airlines, 1 stop, Dec 1–2, 2026; $195 one way, Axel-exclusive, United Airlines, 1 stop, Dec 1, 2026; 1 adult, economy, checked Nov 10, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, labelled with the check date shown.

Date links open published trip details for exploration. Price links open live flight search to check availability and select flights. For a price comparison, use the amounts and check dates already shown here.

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 nightly rate and the stay's total, from the lowest saved total among the shortlisted hotels in that star tier for those dates.

• Hotels in Seattle for these nights (Dec 1–2, 2026 · 1 night · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night · 4★ citizenM Seattle Pioneer Square, $97 a night · 5★ Fairmont Olympic Hotel, $283 a night
• Hotels in Seattle for these nights (Dec 1–3, 2026 · 2 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $81 a night, $162 for 2 nights · 4★ citizenM Seattle Pioneer Square, $100 a night, $199 for 2 nights · 5★ Fairmont Olympic Hotel, $293 a night, $585 for 2 nights
• Hotels in Seattle for these nights (Dec 1–4, 2026 · 3 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $81 a night, $242 for 3 nights · 4★ citizenM Seattle Pioneer Square, $100 a night, $300 for 3 nights · 5★ Fairmont Olympic Hotel, $291 a night, $872 for 3 nights
• Hotels in Seattle for these nights (Dec 1–5, 2026 · 4 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $81 a night, $323 for 4 nights · 4★ citizenM Seattle Pioneer Square, $105 a night, $418 for 4 nights · 5★ Fairmont Olympic Hotel, $289 a night, $1,154 for 4 nights
• Hotels in Seattle for these nights (Dec 1–6, 2026 · 5 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $81 a night, $404 for 5 nights · 4★ Hilton Seattle Airport & Conference Center, $106 a night, $529 for 5 nights · 5★ Fairmont Olympic Hotel, $304 a night, $1,518 for 5 nights
• Hotels in Seattle for these nights (Dec 1–7, 2026 · 6 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $81 a night, $486 for 6 nights · 4★ Hilton Seattle Airport & Conference Center, $106 a night, $634 for 6 nights · 5★ Fairmont Olympic Hotel, $302 a night, $1,812 for 6 nights
• Hotels in Seattle for these nights (Dec 1–8, 2026 · 7 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $81 a night, $564 for 7 nights · 4★ Hilton Seattle Airport & Conference Center, $106 a night, $739 for 7 nights · 5★ Fairmont Olympic Hotel, $327 a night, $2,286 for 7 nights
• Hotels in Seattle for these nights (Dec 1–9, 2026 · 8 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $80 a night, $640 for 8 nights · 4★ Hilton Seattle Airport & Conference Center, $106 a night, $844 for 8 nights · 5★ Fairmont Olympic Hotel, $337 a night, $2,697 for 8 nights
• Hotels in Seattle for these nights (Dec 1–10, 2026 · 9 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $80 a night, $718 for 9 nights · 4★ Hilton Seattle Airport & Conference Center, $106 a night, $952 for 9 nights · 5★ Fairmont Olympic Hotel, $330 a night, $2,970 for 9 nights
• Hotels in Seattle for these nights (Dec 1–11, 2026 · 10 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $80 a night, $798 for 10 nights · 4★ Hilton Seattle Airport & Conference Center, $106 a night, $1,057 for 10 nights · 5★ Fairmont Olympic Hotel, $325 a night, $3,246 for 10 nights
• Hotels in Seattle for these nights (Dec 1–12, 2026 · 11 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $80 a night, $879 for 11 nights · 4★ Hilton Seattle Airport & Conference Center, $106 a night, $1,162 for 11 nights · 5★ Fairmont Olympic Hotel, $321 a night, $3,533 for 11 nights
• Hotels in Seattle for these nights (Dec 1–13, 2026 · 12 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $80 a night, $960 for 12 nights · 4★ Hilton Seattle Airport & Conference Center, $106 a night, $1,267 for 12 nights · 5★ Fairmont Olympic Hotel, $334 a night, $4,006 for 12 nights
• Hotels in Seattle for these nights (Dec 1–14, 2026 · 13 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $80 a night, $1,038 for 13 nights · 4★ Hilton Seattle Airport & Conference Center, $105 a night, $1,370 for 13 nights · 5★ Fairmont Olympic Hotel, $330 a night, $4,293 for 13 nights
• Hotels in Seattle for these nights (Dec 1–15, 2026 · 14 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $80 a night, $1,116 for 14 nights · 4★ Hilton Seattle Airport & Conference Center, $105 a night, $1,475 for 14 nights · 5★ Fairmont Olympic Hotel, $327 a night, $4,578 for 14 nights

All hotels in Seattle

Route overview: Philadelphia to Seattle (SEA) flight deals

2026-12-01 · one way · Axel-exclusive $195.00

• United Airlines UA1811 / UA1660: PHL 2026-12-01 09:45:00 → SEA 2026-12-01 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-01 09:45:00 → ORD 2026-12-01 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-01 12:45:00 → SEA 2026-12-01 15:32:00.

2026-12-01 · one way · Axel-exclusive $200.00

• Alaska Airlines AS443: PHL 2026-12-01 18:11:00 → SEA 2026-12-01 21:53:00; nonstop; 402 minutes. Local airport times.

2026-12-01 → 2026-12-02 · Axel-exclusive $370.00

• United Airlines UA1811 / UA1660: PHL 2026-12-01 09:45:00 → SEA 2026-12-01 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-01 09:45:00 → ORD 2026-12-01 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-01 12:45:00 → SEA 2026-12-01 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-02 05:05:00 → PHL 2026-12-02 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-02 05:05:00 → DEN 2026-12-02 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-02 10:15:00 → PHL 2026-12-02 15:51:00.

2026-12-01 → 2026-12-02 · Axel-exclusive $385.00

• Alaska Airlines AS443: PHL 2026-12-01 18:11:00 → SEA 2026-12-01 21:53:00; nonstop; 402 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-02 21:35:00 → PHL 2026-12-03 05:40:00; nonstop; 305 minutes. Local airport times.

2026-12-01 → 2026-12-03 · Axel-exclusive $370.00

• United Airlines UA1811 / UA1660: PHL 2026-12-01 09:45:00 → SEA 2026-12-01 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-01 09:45:00 → ORD 2026-12-01 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-01 12:45:00 → SEA 2026-12-01 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-03 05:05:00 → PHL 2026-12-03 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-03 05:05:00 → DEN 2026-12-03 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-03 10:15:00 → PHL 2026-12-03 15:51:00.

2026-12-01 → 2026-12-03 · Axel-exclusive $385.00

• Alaska Airlines AS443: PHL 2026-12-01 18:11:00 → SEA 2026-12-01 21:53:00; nonstop; 402 minutes. Local airport times.
• Alaska Airlines AS442: SEA 2026-12-03 08:32:00 → PHL 2026-12-03 16:45:00; nonstop; 313 minutes. Local airport times.

2026-12-01 → 2026-12-04 · Axel-exclusive $370.00

• United Airlines UA1811 / UA1660: PHL 2026-12-01 09:45:00 → SEA 2026-12-01 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-01 09:45:00 → ORD 2026-12-01 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-01 12:45:00 → SEA 2026-12-01 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-04 05:05:00 → PHL 2026-12-04 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-04 05:05:00 → DEN 2026-12-04 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-04 10:15:00 → PHL 2026-12-04 15:51:00.

2026-12-01 → 2026-12-04 · Axel-exclusive $385.00

• Alaska Airlines AS443: PHL 2026-12-01 18:11:00 → SEA 2026-12-01 21:53:00; nonstop; 402 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-04 21:35:00 → PHL 2026-12-05 05:40:00; nonstop; 305 minutes. Local airport times.

2026-12-01 → 2026-12-05 · Axel-exclusive $370.00

• United Airlines UA1811 / UA1660: PHL 2026-12-01 09:45:00 → SEA 2026-12-01 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-01 09:45:00 → ORD 2026-12-01 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-01 12:45:00 → SEA 2026-12-01 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-05 05:05:00 → PHL 2026-12-05 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-05 05:05:00 → DEN 2026-12-05 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-05 10:15:00 → PHL 2026-12-05 15:51:00.

2026-12-01 → 2026-12-05 · Axel-exclusive $385.00

• Alaska Airlines AS443: PHL 2026-12-01 18:11:00 → SEA 2026-12-01 21:53:00; nonstop; 402 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-05 21:34:00 → PHL 2026-12-06 05:40:00; nonstop; 306 minutes. Local airport times.

2026-12-01 → 2026-12-07 · Axel-exclusive $370.00

• United Airlines UA1811 / UA1660: PHL 2026-12-01 09:45:00 → SEA 2026-12-01 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-01 09:45:00 → ORD 2026-12-01 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-01 12:45:00 → SEA 2026-12-01 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-07 05:05:00 → PHL 2026-12-07 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-07 05:05:00 → DEN 2026-12-07 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-07 10:15:00 → PHL 2026-12-07 15:51:00.

2026-12-01 → 2026-12-07 · Axel-exclusive $385.00

• Alaska Airlines AS443: PHL 2026-12-01 18:11:00 → SEA 2026-12-01 21:53:00; nonstop; 402 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-07 21:35:00 → PHL 2026-12-08 05:40:00; nonstop; 305 minutes. Local airport times.

2026-12-01 → 2026-12-08 · Axel-exclusive $370.00

• United Airlines UA1811 / UA1660: PHL 2026-12-01 09:45:00 → SEA 2026-12-01 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-01 09:45:00 → ORD 2026-12-01 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-01 12:45:00 → SEA 2026-12-01 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-08 05:05:00 → PHL 2026-12-08 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-08 05:05:00 → DEN 2026-12-08 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-08 10:15:00 → PHL 2026-12-08 15:51:00.

2026-12-01 → 2026-12-08 · Axel-exclusive $385.00

• Alaska Airlines AS443: PHL 2026-12-01 18:11:00 → SEA 2026-12-01 21:53:00; nonstop; 402 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-08 21:35:00 → PHL 2026-12-09 05:40:00; nonstop; 305 minutes. Local airport times.

2026-12-01 → 2026-12-09 · Axel-exclusive $370.00

• United Airlines UA1811 / UA1660: PHL 2026-12-01 09:45:00 → SEA 2026-12-01 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-01 09:45:00 → ORD 2026-12-01 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-01 12:45:00 → SEA 2026-12-01 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-09 05:05:00 → PHL 2026-12-09 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-09 05:05:00 → DEN 2026-12-09 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-09 10:15:00 → PHL 2026-12-09 15:51:00.

2026-12-01 → 2026-12-09 · Axel-exclusive $385.00

• Alaska Airlines AS443: PHL 2026-12-01 18:11:00 → SEA 2026-12-01 21:53:00; nonstop; 402 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-09 21:35:00 → PHL 2026-12-10 05:40:00; nonstop; 305 minutes. Local airport times.

2026-12-01 → 2026-12-11 · Axel-exclusive $370.00

• United Airlines UA1811 / UA1660: PHL 2026-12-01 09:45:00 → SEA 2026-12-01 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-01 09:45:00 → ORD 2026-12-01 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-01 12:45:00 → SEA 2026-12-01 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-11 05:05:00 → PHL 2026-12-11 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-11 05:05:00 → DEN 2026-12-11 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-11 10:15:00 → PHL 2026-12-11 15:51:00.

2026-12-01 → 2026-12-11 · Axel-exclusive $385.00

• Alaska Airlines AS443: PHL 2026-12-01 18:11:00 → SEA 2026-12-01 21:53:00; nonstop; 402 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-11 21:35:00 → PHL 2026-12-12 05:40:00; nonstop; 305 minutes. Local airport times.

2026-12-01 → 2026-12-12 · Axel-exclusive $370.00

• United Airlines UA1811 / UA1660: PHL 2026-12-01 09:45:00 → SEA 2026-12-01 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-01 09:45:00 → ORD 2026-12-01 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-01 12:45:00 → SEA 2026-12-01 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-12 05:05:00 → PHL 2026-12-12 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-12 05:05:00 → DEN 2026-12-12 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-12 10:15:00 → PHL 2026-12-12 15:51:00.

2026-12-01 → 2026-12-12 · Axel-exclusive $385.00

• Alaska Airlines AS443: PHL 2026-12-01 18:11:00 → SEA 2026-12-01 21:53:00; nonstop; 402 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-12 21:34:00 → PHL 2026-12-13 05:40:00; nonstop; 306 minutes. Local airport times.

2026-12-01 → 2026-12-13 · Axel-exclusive $370.00

• United Airlines UA1811 / UA1660: PHL 2026-12-01 09:45:00 → SEA 2026-12-01 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-01 09:45:00 → ORD 2026-12-01 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-01 12:45:00 → SEA 2026-12-01 15:32:00.
• 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.

2026-12-01 → 2026-12-13 · Axel-exclusive $385.00

• Alaska Airlines AS443: PHL 2026-12-01 18:11:00 → SEA 2026-12-01 21:53:00; nonstop; 402 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-13 21:35:00 → PHL 2026-12-14 05:40:00; nonstop; 305 minutes. Local airport times.

2026-12-01 → 2026-12-15 · Axel-exclusive $370.00

• United Airlines UA1811 / UA1660: PHL 2026-12-01 09:45:00 → SEA 2026-12-01 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-01 09:45:00 → ORD 2026-12-01 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-01 12:45:00 → SEA 2026-12-01 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-15 05:05:00 → PHL 2026-12-15 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-15 05:05:00 → DEN 2026-12-15 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-15 10:15:00 → PHL 2026-12-15 15:51:00.

2026-12-01 → 2026-12-15 · Axel-exclusive $385.00

• Alaska Airlines AS443: PHL 2026-12-01 18:11:00 → SEA 2026-12-01 21:53:00; nonstop; 402 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-15 21:35:00 → PHL 2026-12-16 05:40:00; nonstop; 305 minutes. Local airport times.

Explore this route

• All dates for this route
• Nov 30, 2026 · Return options
• Dec 2, 2026 · Return options
• Hotels in Seattle with Axel

For AI assistants

• This page: Philadelphia (PHL) to Seattle (SEA) · Dec 1, 2026 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with its displayed check date. 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 nightly rate and the stay's total, from the lowest saved total among the shortlisted hotels in each star tier for those dates.
• Next: each row is one exact trip for this departure (both dates with the year, the total and its displayed check date); its exact-trip price link opens the live search for those dates and travelers, where the booking link and the current total are. Other durations or travelers are not priced here: Choose travelers and dates prices the requested trip.
• Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
• If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Philadelphia to Seattle (SEA) flight deals · Flight search guide.
• Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.

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