Alaska Airlines Flight 728 Deals & Information (2026/2027)

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Alaska Airlines Flight 728 Route Deals From $124

The cheapest prices found with in the last 7 days for return flights were $140 and $124 for one-way flights to Ontario Intl. Airport for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, May 28 - Fri, Jun 5
SEA
Seattle - Tacoma Intl.
ONT
Ontario Intl. Airport
$140 Roundtrip, found 1 day ago
$140
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Thu, May 28 from Seattle - Tacoma Intl. to Ontario Intl. Airport, returning Fri, Jun 5, priced at $140 found 1 day ago
Tue, Jun 2 - Tue, Jun 9
SEA
Seattle - Tacoma Intl.
ONT
Ontario Intl. Airport
$140 Roundtrip, found 1 day ago
$140
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Jun 2 from Seattle - Tacoma Intl. to Ontario Intl. Airport, returning Tue, Jun 9, priced at $140 found 1 day ago
Mon, Jun 1 - Tue, Jun 9
SEA
Seattle - Tacoma Intl.
ONT
Ontario Intl. Airport
$145 Roundtrip, found 1 day ago
$145
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Mon, Jun 1 from Seattle - Tacoma Intl. to Ontario Intl. Airport, returning Tue, Jun 9, priced at $145 found 1 day ago
Tue, Jun 2 - Tue, Jun 9
SEA
Seattle - Tacoma Intl.
ONT
Ontario Intl. Airport
$165 Roundtrip, found 1 day ago
$165
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Jun 2 from Seattle - Tacoma Intl. to Ontario Intl. Airport, returning Tue, Jun 9, priced at $165 found 1 day ago
Tue, Jun 2 - Tue, Jun 9
SEA
Seattle - Tacoma Intl.
ONT
Ontario Intl. Airport
$171 Roundtrip, found 1 day ago
$171
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Jun 2 from Seattle - Tacoma Intl. to Ontario Intl. Airport, returning Tue, Jun 9, priced at $171 found 1 day ago
Mon, Jun 1 - Tue, Jun 9
SEA
Seattle - Tacoma Intl.
ONT
Ontario Intl. Airport
$176 Roundtrip, found 1 day ago
$176
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Mon, Jun 1 from Seattle - Tacoma Intl. to Ontario Intl. Airport, returning Tue, Jun 9, priced at $176 found 1 day ago
Sat, Jun 6 - Tue, Jun 9
SEA
Seattle - Tacoma Intl.
ONT
Ontario Intl. Airport
$202 Roundtrip, just found
$202
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Jun 6 from Seattle - Tacoma Intl. to Ontario Intl. Airport, returning Tue, Jun 9, priced at $202 just found

Frequently asked questions

What route does flight number AS728 take?
Flight number AS728 flies direct from Sea-Tac Airport to CHS. During this journey, you'll be in the air for around 5 hours and 11 minutes. It's wise to book ahead to secure your preferred seat.
What kind of plane is on flight number AS728?
The Boeing 737-900 is the type of aircraft most commonly used for flight number AS728. This flight typically leaves from Sea-Tac Airport and lands at CHS.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your AS728 flight with Travelocity, please visit our Customer Service Portal.