Philadelphia (PHL) to Seattle (SEA), Dec 18, 2026: round trips from $413, one way from $195

Philadelphia (PHL) to Seattle (SEA), Dec 18, 2026: round trips from $413, one way from $195 on Axel, checked Oct 29, 2026. Lowest published fares: $413 round trip, Axel-exclusive, United Airlines, 1 stop, Dec 18, 2026 – Jan 1, 2027; $195 one way, Axel-exclusive, United Airlines, 1 stop, Dec 18, 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.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, issued at the time 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 issuance times 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 18–19, 2026 · 1 night · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $79 a night · 4★ citizenM Seattle Pioneer Square, $89 a night · 5★ Fairmont Olympic Hotel, $283 a night
• Hotels in Seattle for these nights (Dec 18–20, 2026 · 2 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $80 a night, $160 for 2 nights · 4★ citizenM Seattle Pioneer Square, $102 a night, $203 for 2 nights · 5★ Fairmont Olympic Hotel, $285 a night, $570 for 2 nights
• Hotels in Seattle for these nights (Dec 18–21, 2026 · 3 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $79 a night, $236 for 3 nights · 4★ citizenM Seattle Pioneer Square, $104 a night, $313 for 3 nights · 5★ Fairmont Olympic Hotel, $279 a night, $837 for 3 nights
• Hotels in Seattle for these nights (Dec 18–22, 2026 · 4 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $79 a night, $314 for 4 nights · 4★ citizenM Seattle Pioneer Square, $103 a night, $411 for 4 nights · 5★ Fairmont Olympic Hotel, $283 a night, $1,133 for 4 nights
• Hotels in Seattle for these nights (Dec 18–23, 2026 · 5 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $390 for 5 nights · 4★ citizenM Seattle Pioneer Square, $102 a night, $509 for 5 nights · 5★ Fairmont Olympic Hotel, $287 a night, $1,434 for 5 nights
• Hotels in Seattle for these nights (Dec 18–24, 2026 · 6 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $468 for 6 nights · 4★ citizenM Seattle Pioneer Square, $101 a night, $607 for 6 nights · 5★ Fairmont Olympic Hotel, $286 a night, $1,716 for 6 nights
• Hotels in Seattle for these nights (Dec 18–25, 2026 · 7 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $548 for 7 nights · 4★ Hilton Seattle Airport & Conference Center, $105 a night, $735 for 7 nights · 5★ Fairmont Olympic Hotel, $284 a night, $1,990 for 7 nights
• Hotels in Seattle for these nights (Dec 18–26, 2026 · 8 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $627 for 8 nights · 4★ Hilton Seattle Airport & Conference Center, $105 a night, $840 for 8 nights · 5★ Fairmont Olympic Hotel, $293 a night, $2,347 for 8 nights
• Hotels in Seattle for these nights (Dec 18–27, 2026 · 9 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $79 a night, $707 for 9 nights · 4★ Hilton Seattle Airport & Conference Center, $105 a night, $945 for 9 nights · 5★ Fairmont Olympic Hotel, $292 a night, $2,630 for 9 nights
• Hotels in Seattle for these nights (Dec 18–28, 2026 · 10 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $783 for 10 nights · 4★ Hilton Seattle Airport & Conference Center, $105 a night, $1,050 for 10 nights · 5★ Fairmont Olympic Hotel, $289 a night, $2,892 for 10 nights
• Hotels in Seattle for these nights (Dec 18–29, 2026 · 11 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $859 for 11 nights · 4★ Hilton Seattle Airport & Conference Center, $105 a night, $1,155 for 11 nights · 5★ Fairmont Olympic Hotel, $289 a night, $3,175 for 11 nights
• Hotels in Seattle for these nights (Dec 18–30, 2026 · 12 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $935 for 12 nights · 4★ Hilton Seattle Airport & Conference Center, $105 a night, $1,258 for 12 nights · 5★ Fairmont Olympic Hotel, $288 a night, $3,453 for 12 nights
• Hotels in Seattle for these nights (Dec 18–31, 2026 · 13 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $1,014 for 13 nights · 4★ Hilton Seattle Airport & Conference Center, $105 a night, $1,363 for 13 nights · 5★ Fairmont Olympic Hotel, $287 a night, $3,736 for 13 nights
• Hotels in Seattle for these nights (Dec 18 – Jan 1, 2027 · 14 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $1,094 for 14 nights · 4★ Hilton Seattle Airport & Conference Center, $105 a night, $1,468 for 14 nights · 5★ Fairmont Olympic Hotel, $304 a night, $4,258 for 14 nights

All hotels in Seattle

Route overview: Philadelphia to Seattle (SEA) flight deals

2026-12-18 · one way · Axel-exclusive $195.00

• United Airlines UA1811 / UA1660: PHL 2026-12-18 09:45:00 → SEA 2026-12-18 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-18 09:45:00 → ORD 2026-12-18 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-18 12:45:00 → SEA 2026-12-18 15:32:00.

2026-12-18 · one way · Axel-exclusive $200.00

• Alaska Airlines AS370: PHL 2026-12-18 07:02:00 → SEA 2026-12-18 10:29:00; nonstop; 387 minutes. Local airport times.

2026-12-18 → 2026-12-19 · Axel-exclusive $444.00

• United Airlines UA1811 / UA1660: PHL 2026-12-18 09:45:00 → SEA 2026-12-18 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-18 09:45:00 → ORD 2026-12-18 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-18 12:45:00 → SEA 2026-12-18 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-19 05:05:00 → PHL 2026-12-19 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-19 05:05:00 → DEN 2026-12-19 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-19 10:15:00 → PHL 2026-12-19 15:51:00.

2026-12-18 → 2026-12-19 · Axel-exclusive $462.00

• Alaska Airlines AS370: PHL 2026-12-18 07:02:00 → SEA 2026-12-18 10:29:00; nonstop; 387 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-19 21:33:00 → PHL 2026-12-20 05:42:00; nonstop; 309 minutes. Local airport times.

2026-12-18 → 2026-12-20 · Axel-exclusive $444.00

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

2026-12-18 → 2026-12-20 · Axel-exclusive $462.00

• Alaska Airlines AS370: PHL 2026-12-18 07:02:00 → SEA 2026-12-18 10:29:00; nonstop; 387 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-20 21:33:00 → PHL 2026-12-21 05:42:00; nonstop; 309 minutes. Local airport times.

2026-12-18 → 2026-12-21 · Axel-exclusive $444.00

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

2026-12-18 → 2026-12-21 · Axel-exclusive $462.00

• Alaska Airlines AS370: PHL 2026-12-18 07:02:00 → SEA 2026-12-18 10:29:00; nonstop; 387 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-21 21:35:00 → PHL 2026-12-22 05:40:00; nonstop; 305 minutes. Local airport times.

2026-12-18 → 2026-12-22 · Axel-exclusive $444.00

• United Airlines UA1811 / UA1660: PHL 2026-12-18 09:45:00 → SEA 2026-12-18 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-18 09:45:00 → ORD 2026-12-18 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-18 12:45:00 → SEA 2026-12-18 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-22 05:05:00 → PHL 2026-12-22 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-22 05:05:00 → DEN 2026-12-22 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-22 10:15:00 → PHL 2026-12-22 15:51:00.

2026-12-18 → 2026-12-22 · Axel-exclusive $462.00

• Alaska Airlines AS370: PHL 2026-12-18 07:02:00 → SEA 2026-12-18 10:29:00; nonstop; 387 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-22 21:35:00 → PHL 2026-12-23 05:40:00; nonstop; 305 minutes. Local airport times.

2026-12-18 → 2026-12-24 · Axel-exclusive $444.00

• United Airlines UA1811 / UA1660: PHL 2026-12-18 09:45:00 → SEA 2026-12-18 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-18 09:45:00 → ORD 2026-12-18 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-18 12:45:00 → SEA 2026-12-18 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-24 05:05:00 → PHL 2026-12-24 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-24 05:05:00 → DEN 2026-12-24 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-24 10:15:00 → PHL 2026-12-24 15:51:00.

2026-12-18 → 2026-12-24 · Axel-exclusive $462.00

• Alaska Airlines AS370: PHL 2026-12-18 07:02:00 → SEA 2026-12-18 10:29:00; nonstop; 387 minutes. Local airport times.
• Alaska Airlines AS442: SEA 2026-12-24 08:32:00 → PHL 2026-12-24 16:45:00; nonstop; 313 minutes. Local airport times.

2026-12-18 → 2026-12-25 · Axel-exclusive $444.00

• United Airlines UA1811 / UA1660: PHL 2026-12-18 09:45:00 → SEA 2026-12-18 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-18 09:45:00 → ORD 2026-12-18 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-18 12:45:00 → SEA 2026-12-18 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-25 05:05:00 → PHL 2026-12-25 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-25 05:05:00 → DEN 2026-12-25 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-25 10:15:00 → PHL 2026-12-25 15:51:00.

2026-12-18 → 2026-12-25 · Axel-exclusive $462.00

• Alaska Airlines AS370: PHL 2026-12-18 07:02:00 → SEA 2026-12-18 10:29:00; nonstop; 387 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-25 21:33:00 → PHL 2026-12-26 05:42:00; nonstop; 309 minutes. Local airport times.

2026-12-18 → 2026-12-26 · Axel-exclusive $444.00

• United Airlines UA1811 / UA1660: PHL 2026-12-18 09:45:00 → SEA 2026-12-18 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-18 09:45:00 → ORD 2026-12-18 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-18 12:45:00 → SEA 2026-12-18 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-26 05:05:00 → PHL 2026-12-26 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-26 05:05:00 → DEN 2026-12-26 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-26 10:15:00 → PHL 2026-12-26 15:51:00.

2026-12-18 → 2026-12-26 · Axel-exclusive $462.00

• Alaska Airlines AS370: PHL 2026-12-18 07:02:00 → SEA 2026-12-18 10:29:00; nonstop; 387 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-26 21:33:00 → PHL 2026-12-27 05:42:00; nonstop; 309 minutes. Local airport times.

2026-12-18 → 2026-12-28 · Axel-exclusive $425.50

• United Airlines UA1811 / UA1660: PHL 2026-12-18 09:45:00 → SEA 2026-12-18 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-18 09:45:00 → ORD 2026-12-18 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-18 12:45:00 → SEA 2026-12-18 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-28 05:05:00 → PHL 2026-12-28 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-28 05:05:00 → DEN 2026-12-28 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-28 10:15:00 → PHL 2026-12-28 15:51:00.

2026-12-18 → 2026-12-28 · Axel-exclusive $442.75

• Alaska Airlines AS370: PHL 2026-12-18 07:02:00 → SEA 2026-12-18 10:29:00; nonstop; 387 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-28 21:35:00 → PHL 2026-12-29 05:40:00; nonstop; 305 minutes. Local airport times.

2026-12-18 → 2026-12-29 · Axel-exclusive $425.50

• United Airlines UA1811 / UA1660: PHL 2026-12-18 09:45:00 → SEA 2026-12-18 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-18 09:45:00 → ORD 2026-12-18 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-18 12:45:00 → SEA 2026-12-18 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-29 05:05:00 → PHL 2026-12-29 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-29 05:05:00 → DEN 2026-12-29 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-29 10:15:00 → PHL 2026-12-29 15:51:00.

2026-12-18 → 2026-12-29 · Axel-exclusive $442.75

• Alaska Airlines AS370: PHL 2026-12-18 07:02:00 → SEA 2026-12-18 10:29:00; nonstop; 387 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-29 21:35:00 → PHL 2026-12-30 05:40:00; nonstop; 305 minutes. Local airport times.

2026-12-18 → 2026-12-30 · Axel-exclusive $425.50

• United Airlines UA1811 / UA1660: PHL 2026-12-18 09:45:00 → SEA 2026-12-18 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-18 09:45:00 → ORD 2026-12-18 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-18 12:45:00 → SEA 2026-12-18 15:32:00.
• United Airlines UA1686 / UA225: SEA 2026-12-30 05:05:00 → PHL 2026-12-30 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2026-12-30 05:05:00 → DEN 2026-12-30 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2026-12-30 10:15:00 → PHL 2026-12-30 15:51:00.

2026-12-18 → 2026-12-30 · Axel-exclusive $442.75

• Alaska Airlines AS370: PHL 2026-12-18 07:02:00 → SEA 2026-12-18 10:29:00; nonstop; 387 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2026-12-30 21:35:00 → PHL 2026-12-31 05:40:00; nonstop; 305 minutes. Local airport times.

2026-12-18 → 2027-01-01 · Axel-exclusive $412.55

• United Airlines UA1811 / UA1660: PHL 2026-12-18 09:45:00 → SEA 2026-12-18 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
  • UA1811: PHL 2026-12-18 09:45:00 → ORD 2026-12-18 11:20:00; layover at ORD: 85 minutes.
  • UA1660: ORD 2026-12-18 12:45:00 → SEA 2026-12-18 15:32:00.
• United Airlines UA1686 / UA225: SEA 2027-01-01 05:05:00 → PHL 2027-01-01 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
  • UA1686: SEA 2027-01-01 05:05:00 → DEN 2027-01-01 08:42:00; layover at DEN: 93 minutes.
  • UA225: DEN 2027-01-01 10:15:00 → PHL 2027-01-01 15:51:00.

2026-12-18 → 2027-01-01 · Axel-exclusive $429.28

• Alaska Airlines AS370: PHL 2026-12-18 07:02:00 → SEA 2026-12-18 10:29:00; nonstop; 387 minutes. Local airport times.
• Alaska Airlines AS371: SEA 2027-01-01 21:33:00 → PHL 2027-01-02 05:42:00; nonstop; 309 minutes. Local airport times.

Explore this route

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

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• This page: Philadelphia (PHL) to Seattle (SEA) · Dec 18, 2026 · choose your return date: 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 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 the time its price was issued); 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.
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