Seattle / Tacoma (SEA) to Philadelphia (PHL) flight deal in economy from $165

Delta Air LinesDLDelta Air Lines
One Way•Economy
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
United StatesPHL

Philadelphia International Airport

Philadelphia, United States
$201 USD
-18%$165 USD
Verified 14 days ago
Great Availability
78% of dates checked are available within 10% of the lowest price

Wednesday, October 21st, 2026

Outbound Flights

5h 14m·Nonstop
$165 USD
Delta Air Lines
SEAOct 21 21:31
→
PHLOct 22 05:45
DL 1114Airbus A321neo
7h 35m·1 stop
$175 USD
Delta Air Lines
SEAOct 21 06:00
→
DTWOct 21 13:23
DL 812Boeing 737
1h 32m layover
Delta Air Lines
DTWOct 21 14:55
→
PHLOct 21 16:35
DL 1391Boeing 717
6h 40m·1 stop
$175 USD
Delta Air Lines
SEAOct 21 23:05
→
DTWOct 22 06:23
DL 810Airbus A321neo
42m layover
Delta Air Lines
DTWOct 22 07:05
→
PHLOct 22 08:45
DL 2968Boeing 717
7h 59m·1 stop
$175 USD
Delta Air Lines
SEAOct 21 23:50
→
MSPOct 22 05:03
DL 953Boeing 757
2h 7m layover
Delta Air Lines
MSPOct 22 07:10
→
PHLOct 22 10:49
DL 2688Airbus A220-100 Passenger
10h 11m·1 stop
$249 USD
Delta Air Lines
SEAOct 21 11:45
→
ATLOct 21 19:30
DL 554Airbus A321neo
3h 25m layover
Delta Air Lines
ATLOct 21 22:55
→
PHLOct 22 00:56
DL 2642Airbus A321
8h 1m·1 stop
$359 USD
Delta Air Lines
SEAOct 21 23:59
→
ATLOct 22 07:32
DL 652Airbus A321neo
1h 28m layover
Delta Air Lines
ATLOct 22 09:00
→
PHLOct 22 11:00
DL 2270Airbus A321
7h 9m·1 stop
$419 USD
Delta Air Lines
SEAOct 21 13:35
→
MSPOct 21 19:03
DL 942Boeing 737
1h 10m layover
Delta Air Lines
MSPOct 21 20:13
→
PHLOct 21 23:44
DL 2703Boeing 737
8h 16m·1 stop
$419 USD
Delta Air Lines
SEAOct 21 13:40
→
ATLOct 21 21:27
DL 542Boeing 737
1h 28m layover
Delta Air Lines
ATLOct 21 22:55
→
PHLOct 22 00:56
DL 2642Airbus A321
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