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Cheap Flights from Ontario to Seattle - ONT to SEA (reverse)

Popular Flights from Ontario to Seattle

  • Airfare from Ontario to Seattle on United from $180 round trip
  • Airfare from Ontario to Seattle on Alaska from $196 round trip
  • Airfare from Ontario to Seattle on American from $198 round trip
  • Airfare from Ontario to Seattle on US Airways from $218 round trip
  • Airfare from Ontario to Seattle on Delta from $12732 round trip

Did You Know?

  • The largest aircraft operated by Continental flying between Ontario, CA and Seattle, WA is a 757 with 182 seats.
  • Portland, OR is the most popular connection for one stop flights between Ontario, CA and Seattle, WA.
  • 8 airlines operate between Ontario, CA and Seattle, WA
  • 104 flights per week fly out of Ontario, CA connecting to Seattle, WA
  • The smallest aircraft operated by Continental flying between Ontario, CA and Seattle, WA is a CRJ with 50 seats.
  • American has the most nonstop flights between Ontario, CA and Seattle, WA.
  • 95,459 seats are available per day to fly out of Ontario, CA connecting to Seattle, WA
  • American has 3 nonstop flights between Ontario, CA and Seattle, WA.

Advance Purchase Prices from Ontario to Seattle

  • Carrier
    0 Days
    1 Day
    3 Days
    7 Days
    10 Days
    14 Days
    21 Days
  • Alaska
    $626
    $626
    $540
    $190
    $190
    $240
    $240
  • American
    $626
    $626
    $230
    $190
    $320
    $240
    $240
  • Continental
    $381
    $381
    $381
    $181
    $341
    $241
    $241
  • Delta
    $360
    $360
    $540
    $160
    $320
    $220
    $160
  • US Airways
    $349
    $349
    $561
    $181
    $341
    $261
    $181
  • United
    $381
    $381
    $381
    $181
    $341
    $241
    $241

Daily Non-stop Flight Schedules from Ontario International to Seattle/Tacoma International

  • Airline
    Mon
    Tue
    Wed
    Thu
    Fri
    Sat
    Sun
    Earliest Flight
    Latest Flight
  • Alaska
    2
    2
    2
    2
    2
    2
    2
    10:45 AM
    5:20 PM

Cheap Domestic Flights from Ontario - ONT

Flights
Airline
Lowest Price
United, Alaska, US Airways
$136
Delta, US Airways, United, Alaska, American
$233
American, Alaska, United, Delta, US Airways
$236
Alaska, American, US Airways, Delta, United
$176
United, US Airways, American, AirTran
$296
Cheap Flights from Ontario to Seattle, from $180 Round trip from ONT to SEA