Seattle / Tacoma (SEA) to Philadelphia (PHL) flight deal in economy from $165
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
PHLPhiladelphia International Airport
Philadelphia, United States
$201 USD
-18%$165 USD
Verified 14 days agoJuly 2026
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Great Availability
78% of dates checked are available within 10% of the lowest price
Saturday, July 25th, 2026
Outbound Flights
5h 9m·Nonstop
$309 USD
SEAJul 25 21:20
→PHLJul 26 05:29
DL 1114Airbus A321neo
8h 13m·1 stop
$319 USDSEAJul 25 05:30
→DTWJul 25 12:42
DL 812Boeing 757
2h 18m layover
DTWJul 25 15:00
→PHLJul 25 16:43
DL 1391Boeing 717
9h 31m·1 stop
$319 USDSEAJul 25 07:20
→ATLJul 25 15:17
DL 562Boeing 757
2h 28m layover
ATLJul 25 17:45
→PHLJul 25 19:51
DL 1329Airbus A321
7h 25m·1 stop
$339 USDSEAJul 25 05:30
→SLCJul 25 08:30
DL 1128Airbus A321neo
1h 5m layover
SLCJul 25 09:35
→PHLJul 25 15:55
DL 2022Boeing 737
8h 59m·1 stop
$529 USDSEAJul 25 06:05
→MSPJul 25 11:24
DL 943Boeing 737
3h 1m layover
MSPJul 25 14:25
→PHLJul 25 18:04
DL 8783Airbus A220-100 Passenger
8h 56m·1 stop
$529 USDSEAJul 25 11:20
→DTWJul 25 18:37
DL 1706Boeing 757
2h 58m layover
DTWJul 25 21:35
→PHLJul 25 23:16
DL 2402Boeing 717
7h 33m·1 stop
$529 USDSEAJul 25 22:58
→ATLJul 26 06:45
DL 409Boeing 737
45m layover
ATLJul 26 07:30
→PHLJul 26 09:31
DL 1100Airbus A321
6h 26m·1 stop
$684 USDSEAJul 25 23:15
→DTWJul 26 06:28
DL 810Boeing 737
37m layover
DTWJul 26 07:05
→PHLJul 26 08:41
DL 2968Boeing 717