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

Friday, September 18th, 2026

Outbound Flights

5h 20m·Nonstop
$165 USD
Delta Air Lines
SEASep 18 21:30
→
PHLSep 19 05:50
DL 1114Airbus A321neo
7h 32m·1 stop
$175 USD
Delta Air Lines
SEASep 18 06:00
→
DTWSep 18 13:20
DL 812Boeing 737
1h 29m layover
Delta Air Lines
DTWSep 18 14:49
→
PHLSep 18 16:32
DL 1391Boeing 717
7h 16m·1 stop
$249 USD
Delta Air Lines
SEASep 18 23:59
→
ATLSep 19 07:35
DL 652Airbus A321neo
40m layover
Delta Air Lines
ATLSep 19 08:15
→
PHLSep 19 10:15
DL 1100Airbus A321
10h 6m·1 stop
$299 USD
Delta Air Lines
SEASep 18 11:35
→
ATLSep 18 19:24
DL 554Boeing 757
3h 16m layover
Delta Air Lines
ATLSep 18 22:40
→
PHLSep 19 00:41
DL 2642Airbus A321
6h 42m·1 stop
$299 USD
Delta Air Lines
SEASep 18 23:05
→
DTWSep 19 06:28
DL 810Airbus A321neo
42m layover
Delta Air Lines
DTWSep 19 07:10
→
PHLSep 19 08:47
DL 2968Boeing 717
7h 49m·1 stop
$359 USD
Delta Air Lines
SEASep 18 11:35
→
ATLSep 18 19:24
DL 554Boeing 757
58m layover
Delta Air Lines
ATLSep 18 20:22
→
PHLSep 18 22:24
DL 1174Airbus A321
9h 42m·2 stops
$1,157 USD
Delta Air Lines
SEASep 18 11:59
→
MSPSep 18 17:30
DL 536Boeing 757
40m layover
Delta Air Lines
MSPSep 18 18:10
→
ATLSep 18 21:48
DL 1026Boeing 737
52m layover
Delta Air Lines
ATLSep 18 22:40
→
PHLSep 19 00:41
DL 2642Airbus A321
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