$180 Economy Roundtrip to Seattle (ONT-SEA) in May from Ontario

Cheap economy Flights: ONT to SEA in May - Route 3

Starting from $180

Flight Options & Prices:

Direct Flights: From $477 - Fastest option with no layovers
One-Stop Flights: From $180 - Good value with one connection
Multi-Stop Flights: From $180 - Cheapest option with multiple connections

Book your economy class flight from Ontario (ONT) to Seattle (SEA)and save money on your travel. Compare all flight options to find the best deal for your may trip.

Best Flights starting from $180

Fri, May 1

Roundtrip

Sun, May 3

Sat, May 2

Roundtrip

Mon, May 4

Sun, May 3

Roundtrip

Tue, May 5

Mon, May 4

Roundtrip

Wed, May 6

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Flight Options & Prices:

Cheap economy Flights: ONT to SEA in May - Route 3

Flight Options & Prices:

Cheap economy Flights: ONT to SEA in May - Route 4

Flight Options & Prices:

Why Choose Economy Class Flights from Ontario (ONT) to Seattle (SEA)?