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 13 days ago
Great Availability
78% of dates checked are available within 10% of the lowest price

Wednesday, August 19th, 2026

Outbound Flights

5h 20m·Nonstop
$289 USD
Delta Air Lines
SEAAug 19 21:30
→
PHLAug 20 05:50
DL 1114Airbus A321neo
8h 3m·1 stop
$359 USD
Delta Air Lines
SEAAug 19 05:30
→
DTWAug 19 12:42
DL 812Boeing 757
2h 9m layover
Delta Air Lines
DTWAug 19 14:51
→
PHLAug 19 16:33
DL 1391Boeing 717
8h 6m·1 stop
$359 USD
Delta Air Lines
SEAAug 19 23:59
→
ATLAug 20 07:47
DL 652Airbus A321neo
1h 13m layover
Delta Air Lines
ATLAug 20 09:00
→
PHLAug 20 11:05
DL 2270Airbus A321
9h 2m·1 stop
$359 USD
Delta Air Lines
SEAAug 19 05:45
→
SLCAug 19 08:46
DL 1128Airbus A321neo
2h 42m layover
Delta Air Lines
SLCAug 19 11:28
→
PHLAug 19 17:47
DL 2022Boeing 737
8h 54m·1 stop
$359 USD
Delta Air Lines
SEAAug 19 06:05
→
MSPAug 19 11:25
DL 943Airbus A321
2h 55m layover
Delta Air Lines
MSPAug 19 14:20
→
PHLAug 19 17:59
DL 2594Airbus A220-300 Passenger
8h 46m·1 stop
$359 USD
Delta Air Lines
SEAAug 19 11:56
→
ATLAug 19 20:01
DL 554Boeing 757
1h 29m layover
Delta Air Lines
ATLAug 19 21:30
→
PHLAug 19 23:42
DL 2642Airbus A321
6h 45m·1 stop
$419 USD
Delta Air Lines
SEAAug 19 23:10
→
DTWAug 20 06:23
DL 810Boeing 737
49m layover
Delta Air Lines
DTWAug 20 07:12
→
PHLAug 20 08:55
DL 3888Canadair RJ 900
6h 26m·1 stop
$529 USD
Delta Air Lines
SEAAug 19 14:30
→
MSPAug 19 19:54
DL 942Boeing 757
31m layover
Delta Air Lines
MSPAug 19 20:25
→
PHLAug 19 23:56
DL 2703Boeing 737
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