Popular airlines from Seattle to Highland
Alaska AirlinesAlaska Airlines
DeltaDelta
Frontier AirlinesFrontier Airlines
UnitedUnited
Southwest AirlinesSouthwest Airlines
American AirlinesAmerican Airlines
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Cheap Flights from Seattle to Highland (SEA-ONT)
Prices were available within the past 7 days and start at $61 for one-way flights and $110 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Wed, Aug 27 - Sat, Aug 30
SEA
Seattle
ONT
Ontario
$110 Roundtrip, just found
$110
Roundtrip
just found
Wed, Aug 27 - Sun, Aug 31
SEA
Seattle
ONT
Ontario
$116 Roundtrip, just found
$116
Roundtrip
just found
Wed, Aug 27 - Sat, Aug 30
SEA
Seattle
ONT
Ontario
$155 Roundtrip, just found
$155
Roundtrip
just found
Wed, Aug 20 - Wed, Aug 27
SEA
Seattle
ONT
Ontario
$157 Roundtrip, just found
$157
Roundtrip
just found
Wed, Aug 20 - Wed, Aug 27
SEA
Seattle
ONT
Ontario
$157 Roundtrip, just found
$157
Roundtrip
just found
Fri, Aug 22 - Tue, Aug 26
SEA
Seattle
ONT
Ontario
$177 Roundtrip, just found
$177
Roundtrip
just found
Find the cheapest month to fly from Seattle (SEA) to Ontario (ONT)
October is typically the cheapest month to fly
From $65 - $187 per traveler.
Graph displaying average flight prices per month
Alternative airports near Highland
Prices were available within the past 7 days. Prices and availability are subject to change.
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