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

Delta Air LinesDLDelta Air Lines
One Way•Economy
United StatesPHL

Philadelphia International Airport

Philadelphia, United States
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
$212 USD
-22%$165 USD
Verified 13 days ago
Great Availability
74% of dates checked are available within 10% of the lowest price

Tuesday, August 18th, 2026

Outbound Flights

5h 56m·Nonstop
$165 USD
Delta Air Lines
PHLAug 18 07:05
→
SEAAug 18 10:01
DL 2092Airbus A321neo
8h 30m·1 stop
$175 USD
Delta Air Lines
PHLAug 18 08:10
→
ATLAug 18 10:16
DL 1180Airbus A321
59m layover
Delta Air Lines
ATLAug 18 11:15
→
SEAAug 18 13:40
DL 648Airbus A321neo
9h 9m·1 stop
$209 USD
Delta Air Lines
PHLAug 18 12:36
→
DTWAug 18 14:20
DL 2331Boeing 717
2h 29m layover
Delta Air Lines
DTWAug 18 16:49
→
SEAAug 18 18:45
DL 944Boeing 737
9h 31m·1 stop
$209 USD
Delta Air Lines
PHLAug 18 15:29
→
MSPAug 18 17:18
DL 2679Airbus A220-300 Passenger
2h 46m layover
Delta Air Lines
MSPAug 18 20:04
→
SEAAug 18 22:00
DL 881Airbus A321
7h 45m·1 stop
$209 USD
Delta Air Lines
PHLAug 18 17:20
→
DTWAug 18 19:09
DL 1391Boeing 717
56m layover
Delta Air Lines
DTWAug 18 20:05
→
SEAAug 18 22:05
DL 565Boeing 757
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