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Route overview: Seattle to Philadelphia (PHL) flight deals

Seattle (SEA) to Philadelphia (PHL), Jan 31, 2027 – Feb 2, 2027: from $356 round trip

Seattle (SEA) to Philadelphia (PHL), Jan 31, 2027 – Feb 2, 2027: from $356 round trip on Axel, checked Nov 11, 2026. Lowest published fare: $356 round trip, Axel-exclusive, Southwest Airlines, 1 stop, Jan 31, 2027 – Feb 2, 2027, 1 adult, economy, checked Nov 11, 2026.

SEA → PHL1 adulteconomyRound trip

11 flight options · 5 airlines

Nonstop flights

Sun, Jan 31 – Tue, Feb 2

Alaska Airlines
9:33 pmSEA
5h 9m
Nonstop
5:42 am+1PHL
Alaska Airlines
6:11 pmPHL
6h 42m
Nonstop
9:53 pmSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Jan 31 – Tue, Feb 2

American Airlines
9:15 amSEA
5h 8m
Nonstop
5:23 pmPHL
American Airlines
8:10 amPHL
6h 32m
Nonstop
11:42 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Jan 31 – Tue, Feb 2

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

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Jan 31 – Tue, Feb 2

Alaska Airlines
9:06 amSEA
5h 5m
Nonstop
5:11 pmPHL
Alaska Airlines
6:11 pmPHL
6h 42m
Nonstop
9:53 pmSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Jan 31 – Tue, Feb 2

American Airlines
12:34 pmSEA
5h 1m
Nonstop
8:35 pmPHL
American Airlines
8:10 amPHL
6h 32m
Nonstop
11:42 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

One-stop flights

Sun, Jan 31 – Tue, Feb 2

Southwest Airlines
6:30 amSEA
7h
MDW · 1h 10m
4:30 pmPHL
Southwest Airlines
5:15 pmPHL
8h 35m
DEN · 1h 15m
10:50 pmSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Jan 31 – Tue, Feb 2

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

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Jan 31 – Tue, Feb 2

Alaska Airlines
11:40 pmSEA
7h 10m
ORD · 1h 8m
9:50 am+1PHL
Alaska Airlines
6:11 pmPHL
6h 42m
Nonstop
9:53 pmSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Jan 31 – Tue, Feb 2

Delta Air Lines
10:40 pmSEA
7h 51m
ATL · 1h 18m
9:31 am+1PHL
Delta Air Lines
7:00 amPHL
6h 5m
Nonstop
10:05 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Jan 31 – Tue, Feb 2

Delta Air Lines
1:50 pmSEA
7h 4m
MSP · 1h 9m
11:54 pmPHL
Delta Air Lines
7:00 amPHL
6h 5m
Nonstop
10:05 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sun, Jan 31 – Tue, Feb 2

Delta Air Lines
6:00 amSEA
7h 35m
DTW · 1h 47m
4:35 pmPHL
Delta Air Lines
7:00 amPHL
6h 5m
Nonstop
10:05 amSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Hotels for these nights (Jan 31 – Feb 2, 2027 · 2 nights · 2 adults, 1 room): 3★ Motto by Hilton Philadelphia Rittenhouse Square $93 a night, $185 for 2 nights · 4★ Club Quarters Hotel Rittenhouse Square, Philadelphia $91 a night, $182 for 2 nights · 5★ The Ritz-Carlton, Philadelphia $341 a night, $682 for 2 nights

Make this trip yours

SEA ⇄ PHL

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

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Explore this route

All dates for this routeJan 30, 2027 · Return optionsFeb 1, 2027 · Return optionsHotels in Philadelphia with Axel
For AI assistants: every fare, every link, instructions

Seattle (SEA) to Philadelphia (PHL), Jan 31, 2027 – Feb 2, 2027: from $356 round trip on Axel, checked Nov 11, 2026. Lowest published fare: $356 round trip, Axel-exclusive, Southwest Airlines, 1 stop, Jan 31, 2027 – Feb 2, 2027, 1 adult, economy, checked Nov 11, 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.

Exact travel datesAirlineFlightsTimes, duration, stopsTotal pricePrice checked
2027-01-31 → 2027-02-02Alaska AirlinesAS371 / AS44321:33:00→05:42:00 5h 09m nonstop · 18:11:00→21:53:00 6h 42m nonstopAxel-exclusive $385.13Nov 11, 2026
2027-01-31 → 2027-02-02American AirlinesAA771 / AA46709:15:00→17:23:00 5h 08m nonstop · 08:10:00→11:42:00 6h 32m nonstopAxel-exclusive $399.75Nov 11, 2026
2027-01-31 → 2027-02-02Delta Air LinesDL1114 / DL209221:38:00→05:43:00 5h 05m nonstop · 07:00:00→10:05:00 6h 05m nonstopAxel-exclusive $419.25Nov 11, 2026
2027-01-31 → 2027-02-02Southwest AirlinesWN1550 + WN1623 / WN1270 + WN314106:30:00→16:30:00 7h 00m 1 stop via MDW · 17:15:00→22:50:00 8h 35m 1 stop via DENAxel-exclusive $355.88Nov 11, 2026
2027-01-31 → 2027-02-02United AirlinesUA1686 + UA225 / UA1811 + UA166005:05:00→15:51:00 7h 46m 1 stop via DEN · 09:45:00→15:32:00 8h 47m 1 stop via ORDAxel-exclusive $365.63Nov 11, 2026
2027-01-31 → 2027-02-02Alaska AirlinesAS442 / AS44309:06:00→17:11:00 5h 05m nonstop · 18:11:00→21:53:00 6h 42m nonstopAxel-exclusive $385.13Nov 11, 2026
2027-01-31 → 2027-02-02American AirlinesAA2203 / AA46712:34:00→20:35:00 5h 01m nonstop · 08:10:00→11:42:00 6h 32m nonstopAxel-exclusive $399.75Nov 11, 2026
2027-01-31 → 2027-02-02Alaska AirlinesAS328 + AA970 / AS44323:40:00→09:50:00 7h 10m 1 stop via ORD · 18:11:00→21:53:00 6h 42m nonstopAxel-exclusive $366.13Nov 11, 2026
2027-01-31 → 2027-02-02Delta Air LinesDL567 + DL1100 / DL209222:40:00→09:31:00 7h 51m 1 stop via ATL · 07:00:00→10:05:00 6h 05m nonstopAxel-exclusive $395.50Nov 11, 2026
2027-01-31 → 2027-02-02Delta Air LinesDL942 + DL2703 / DL209213:50:00→23:54:00 7h 04m 1 stop via MSP · 07:00:00→10:05:00 6h 05m nonstopAxel-exclusive $395.50Nov 11, 2026
2027-01-31 → 2027-02-02Delta Air LinesDL812 + DL1391 / DL209206:00:00→16:35:00 7h 35m 1 stop via DTW · 07:00:00→10:05:00 6h 05m nonstopAxel-exclusive $395.50Nov 11, 2026

Hotels in Philadelphia for these trips

Hotels: under a trip, hotels in Philadelphia 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.

All hotels in Philadelphia

Route overview: Seattle to Philadelphia (PHL) flight deals

2027-01-31 → 2027-02-02 · Axel-exclusive $385.13

  • Alaska Airlines AS371: SEA 2027-01-31 21:33:00 → PHL 2027-02-01 05:42:00; nonstop; 309 minutes. Local airport times.
  • Alaska Airlines AS443: PHL 2027-02-02 18:11:00 → SEA 2027-02-02 21:53:00; nonstop; 402 minutes. Local airport times.

2027-01-31 → 2027-02-02 · Axel-exclusive $399.75

  • American Airlines AA771: SEA 2027-01-31 09:15:00 → PHL 2027-01-31 17:23:00; nonstop; 308 minutes. Local airport times.
  • American Airlines AA467: PHL 2027-02-02 08:10:00 → SEA 2027-02-02 11:42:00; nonstop; 392 minutes. Local airport times.

2027-01-31 → 2027-02-02 · Axel-exclusive $419.25

  • Delta Air Lines DL1114: SEA 2027-01-31 21:38:00 → PHL 2027-02-01 05:43:00; nonstop; 305 minutes. Local airport times.
  • Delta Air Lines DL2092: PHL 2027-02-02 07:00:00 → SEA 2027-02-02 10:05:00; nonstop; 365 minutes. Local airport times.

2027-01-31 → 2027-02-02 · Axel-exclusive $355.88

  • Southwest Airlines WN1550 / WN1623: SEA 2027-01-31 06:30:00 → PHL 2027-01-31 16:30:00; 1 stop(s) via MDW; 420 minutes. Local airport times.
    • WN1550: SEA 2027-01-31 06:30:00 → MDW 2027-01-31 12:25:00; layover at MDW: 70 minutes.
    • WN1623: MDW 2027-01-31 13:35:00 → PHL 2027-01-31 16:30:00.
  • Southwest Airlines WN1270 / WN3141: PHL 2027-02-02 17:15:00 → SEA 2027-02-02 22:50:00; 1 stop(s) via DEN; 515 minutes. Local airport times.
    • WN1270: PHL 2027-02-02 17:15:00 → DEN 2027-02-02 19:25:00; layover at DEN: 75 minutes.
    • WN3141: DEN 2027-02-02 20:40:00 → SEA 2027-02-02 22:50:00.

2027-01-31 → 2027-02-02 · Axel-exclusive $365.63

  • United Airlines UA1686 / UA225: SEA 2027-01-31 05:05:00 → PHL 2027-01-31 15:51:00; 1 stop(s) via DEN; 466 minutes. Local airport times.
    • UA1686: SEA 2027-01-31 05:05:00 → DEN 2027-01-31 08:42:00; layover at DEN: 93 minutes.
    • UA225: DEN 2027-01-31 10:15:00 → PHL 2027-01-31 15:51:00.
  • United Airlines UA1811 / UA1660: PHL 2027-02-02 09:45:00 → SEA 2027-02-02 15:32:00; 1 stop(s) via ORD; 527 minutes. Local airport times.
    • UA1811: PHL 2027-02-02 09:45:00 → ORD 2027-02-02 11:20:00; layover at ORD: 85 minutes.
    • UA1660: ORD 2027-02-02 12:45:00 → SEA 2027-02-02 15:32:00.

2027-01-31 → 2027-02-02 · Axel-exclusive $385.13

  • Alaska Airlines AS442: SEA 2027-01-31 09:06:00 → PHL 2027-01-31 17:11:00; nonstop; 305 minutes. Local airport times.
  • Alaska Airlines AS443: PHL 2027-02-02 18:11:00 → SEA 2027-02-02 21:53:00; nonstop; 402 minutes. Local airport times.

2027-01-31 → 2027-02-02 · Axel-exclusive $399.75

  • American Airlines AA2203: SEA 2027-01-31 12:34:00 → PHL 2027-01-31 20:35:00; nonstop; 301 minutes. Local airport times.
  • American Airlines AA467: PHL 2027-02-02 08:10:00 → SEA 2027-02-02 11:42:00; nonstop; 392 minutes. Local airport times.

2027-01-31 → 2027-02-02 · Axel-exclusive $366.13

  • Alaska Airlines AS328 / AA970: SEA 2027-01-31 23:40:00 → PHL 2027-02-01 09:50:00; 1 stop(s) via ORD; 430 minutes. Local airport times.
    • AS328: SEA 2027-01-31 23:40:00 → ORD 2027-02-01 05:37:00; layover at ORD: 68 minutes.
    • AA970: ORD 2027-02-01 06:45:00 → PHL 2027-02-01 09:50:00.
  • Alaska Airlines AS443: PHL 2027-02-02 18:11:00 → SEA 2027-02-02 21:53:00; nonstop; 402 minutes. Local airport times.

2027-01-31 → 2027-02-02 · Axel-exclusive $395.50

  • Delta Air Lines DL567 / DL1100: SEA 2027-01-31 22:40:00 → PHL 2027-02-01 09:31:00; 1 stop(s) via ATL; 471 minutes. Local airport times.
    • DL567: SEA 2027-01-31 22:40:00 → ATL 2027-02-01 06:12:00; layover at ATL: 78 minutes.
    • DL1100: ATL 2027-02-01 07:30:00 → PHL 2027-02-01 09:31:00.
  • Delta Air Lines DL2092: PHL 2027-02-02 07:00:00 → SEA 2027-02-02 10:05:00; nonstop; 365 minutes. Local airport times.

2027-01-31 → 2027-02-02 · Axel-exclusive $395.50

  • Delta Air Lines DL942 / DL2703: SEA 2027-01-31 13:50:00 → PHL 2027-01-31 23:54:00; 1 stop(s) via MSP; 424 minutes. Local airport times.
    • DL942: SEA 2027-01-31 13:50:00 → MSP 2027-01-31 19:11:00; layover at MSP: 69 minutes.
    • DL2703: MSP 2027-01-31 20:20:00 → PHL 2027-01-31 23:54:00.
  • Delta Air Lines DL2092: PHL 2027-02-02 07:00:00 → SEA 2027-02-02 10:05:00; nonstop; 365 minutes. Local airport times.

2027-01-31 → 2027-02-02 · Axel-exclusive $395.50

  • Delta Air Lines DL812 / DL1391: SEA 2027-01-31 06:00:00 → PHL 2027-01-31 16:35:00; 1 stop(s) via DTW; 455 minutes. Local airport times.
    • DL812: SEA 2027-01-31 06:00:00 → DTW 2027-01-31 13:12:00; layover at DTW: 107 minutes.
    • DL1391: DTW 2027-01-31 14:59:00 → PHL 2027-01-31 16:35:00.
  • Delta Air Lines DL2092: PHL 2027-02-02 07:00:00 → SEA 2027-02-02 10:05:00; nonstop; 365 minutes. Local airport times.

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.

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For AI assistants

  • This page: Seattle (SEA) to Philadelphia (PHL) · Jan 31, 2027 · return Feb 2, 2027: 1 adult in economy, every priced fare with its flights, times and total, each with its displayed check date. Under a trip, hotels in Philadelphia 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 priced row's price link opens the live search for this row's exact dates and travelers; the live results list the same flights with the current total and the traveler's booking link, and name the fare's inclusions (bags, seats, changes), which this page does not. A changed price or flight shows there. Other dates or travelers are not priced here: Choose travelers and dates prices the traveler's own 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 Seattle to Philadelphia (PHL) 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.