Delta Flight 4027 Deals & Information (2025/2026)

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Delta Flight 4027 Route Deals From $80

The cheapest prices found with in the last 7 days for return flights were $109 and $80 for one-way flights to Los Angeles - Ontario Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Jan 23 - Sat, Feb 7
SEA
Seattle - Tacoma Intl.
ONT
Los Angeles - Ontario Intl.
$109 Roundtrip, found 2 days ago
$109
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Jan 23 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Sat, Feb 7, priced at $109 found 2 days ago
Fri, Jan 23 - Sat, Feb 7
SEA
Seattle - Tacoma Intl.
ONT
Los Angeles - Ontario Intl.
$119 Roundtrip, found 2 days ago
$119
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Jan 23 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Sat, Feb 7, priced at $119 found 2 days ago
Tue, Jan 20 - Sat, Jan 24
SEA
Seattle - Tacoma Intl.
ONT
Los Angeles - Ontario Intl.
$122 Roundtrip, found 15 hours ago
$122
Roundtrip
found 15 hours ago
Select Delta flight, departing Tue, Jan 20 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Sat, Jan 24, priced at $122 found 15 hours ago
Thu, Feb 26 - Mon, Mar 2
SEA
Seattle - Tacoma Intl.
ONT
Los Angeles - Ontario Intl.
$129 Roundtrip, found 1 day ago
$129
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Feb 26 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Mon, Mar 2, priced at $129 found 1 day ago
Thu, Feb 12 - Sun, Feb 15
SEA
Seattle - Tacoma Intl.
ONT
Los Angeles - Ontario Intl.
$130 Roundtrip, found 1 hour ago
$130
Roundtrip
found 1 hour ago
Select Delta flight, departing Thu, Feb 12 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Sun, Feb 15, priced at $130 found 1 hour ago
Mon, Feb 2 - Sat, Feb 7
SEA
Seattle - Tacoma Intl.
ONT
Los Angeles - Ontario Intl.
$140 Roundtrip, found 18 hours ago
$140
Roundtrip
found 18 hours ago
Select Delta flight, departing Mon, Feb 2 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Sat, Feb 7, priced at $140 found 18 hours ago
Fri, Jan 23 - Sat, Feb 7
SEA
Seattle - Tacoma Intl.
ONT
Los Angeles - Ontario Intl.
$149 Roundtrip, found 2 days ago
$149
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Jan 23 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Sat, Feb 7, priced at $149 found 2 days ago
Thu, Feb 5 - Sun, Feb 8
SEA
Seattle - Tacoma Intl.
ONT
Los Angeles - Ontario Intl.
$151 Roundtrip, found 5 days ago
$151
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Feb 5 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Sun, Feb 8, priced at $151 found 5 days ago
Wed, Feb 11 - Thu, Feb 12
SEA
Seattle - Tacoma Intl.
ONT
Los Angeles - Ontario Intl.
$152 Roundtrip, found 3 days ago
$152
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Feb 11 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Thu, Feb 12, priced at $152 found 3 days ago
Wed, Mar 25 - Sat, Mar 28
SEA
Seattle - Tacoma Intl.
ONT
Los Angeles - Ontario Intl.
$155 Roundtrip, found 17 hours ago
$155
Roundtrip
found 17 hours ago
Select Delta flight, departing Wed, Mar 25 from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl., returning Sat, Mar 28, priced at $155 found 17 hours ago