Skip to content

Get United's best fares today on flights from Philadelphia to Seattle from *

Select journey type

Enter to select travel class and passengers

Low fare calendar for flights from Philadelphia (PHL) to Seattle (SEA)

Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
1
2
3
4
5
6
7
8
9
10
11
12
13
from
$396*
Viewed:14 hours ago
Economy
Return:12/27/19
14
from
$294*
Viewed:14 hours ago
Economy
Return:12/21/19
15
from
$848*
Viewed:14 hours ago
Economy
Return:12/29/19
16
from
$294*
Viewed:14 hours ago
Economy
Return:12/23/19
17
from
$294*
Viewed:14 hours ago
Economy
Return:12/24/19
18
from
$396*
Viewed:14 hours ago
Economy
Return:01/01/20
19
from
$396*
Viewed:14 hours ago
Economy
Return:01/02/20
20
from
$294*
Viewed:14 hours ago
Economy
Return:12/27/19
21
from
$396*
Viewed:14 hours ago
Economy
Return:01/04/20
22
from
$294*
Viewed:14 hours ago
Economy
Return:12/29/19
23
from
$294*
Viewed:14 hours ago
Economy
Return:12/30/19
24
from
$294*
Viewed:14 hours ago
Economy
Return:12/31/19
25
from
$396*
Viewed:14 hours ago
Economy
Return:01/08/20
26
from
$294*
Viewed:14 hours ago
Economy
Return:01/02/20
27
from
$294*
Viewed:14 hours ago
Economy
Return:01/03/20
28
from
$589*
Viewed:14 hours ago
Economy
Return:01/11/20
29
from
$396*
Viewed:14 hours ago
Economy
Return:01/12/20
30
from
$294*
Viewed:14 hours ago
Economy
Return:01/06/20
31
from
$294*
Viewed:14 hours ago
Economy
Return:01/07/20
from
$589*
Viewed:14 hours ago
Economy
Return:01/15/20
from
$294*
Viewed:14 hours ago
Economy
Return:01/09/20
from
$589*
Viewed:14 hours ago
Economy
Return:01/17/20
from
$589*
Viewed:14 hours ago
Economy
Return:01/18/20
Lowest PriceToday
*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Looking for additional flights from Philadelphia to Seattle?

FromToDatesFare TypePrice

Philadelphia (PHL)

Seattle (SEA)

Depart: 01/19/20

Return: 02/02/20

Roundtrip
from
$264*
Viewed:13hoursago

Philadelphia (PHL)

Seattle (SEA)

Depart: 01/16/20

Return: 01/30/20

Roundtrip
from
$264*
Viewed:13hoursago

Philadelphia (PHL)

Seattle (SEA)

Depart: 01/29/20

Return: 02/12/20

Roundtrip
from
$264*
Viewed:13hoursago

Philadelphia (PHL)

Seattle (SEA)

Depart: 01/17/20

Return: 01/31/20

Roundtrip
from
$264*
Viewed:13hoursago

Philadelphia (PHL)

Seattle (SEA)

Depart: 01/14/20

Return: 01/28/20

Roundtrip
from
$264*
Viewed:13hoursago

Philadelphia (PHL)

Seattle (SEA)

Depart: 01/31/20

Return: 02/14/20

Roundtrip
from
$264*
Viewed:13hoursago

Philadelphia (PHL)

Seattle (SEA)

Depart: 01/25/20

Return: 02/08/20

Roundtrip
from
$264*
Viewed:13hoursago

Philadelphia (PHL)

Seattle (SEA)

Depart: 01/12/20

Return: 01/26/20

Roundtrip
from
$264*
Viewed:13hoursago

Philadelphia (PHL)

Seattle (SEA)

Depart: 01/13/20

Return: 01/27/20

Roundtrip
from
$264*
Viewed:13hoursago

Philadelphia (PHL)

Seattle (SEA)

Depart: 01/18/20

Return: 02/01/20

Roundtrip
from
$264*
Viewed:13hoursago

*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Weather in Seattle

Friday moderate rain
47°F 12/13/19
Saturday broken clouds
44°F 12/14/19
Sunday scattered clouds
42°F 12/15/19
Monday overcast clouds
41°F 12/16/19
Tuesday overcast clouds
40°F 12/17/19
Wednesday overcast clouds
41°F 12/18/19
Thursday heavy intensity rain
38°F 12/19/19
Powered by: OpenWeatherMap.org