Flights from Ontario to Seattle

ONTSEA

Ontario International Airport (Ontario, United States) → Seattle–Tacoma International Airport (Seattle, United States)

Nonstop
2h 43m
Distance
1,540 km
Frequency
7×/week
One-way from
$106
Airlines
Alaska Airlines, Delta Air Lines, Frontier Airlines, Southwest Airlines
Book on Aviasales

Fares by month

One-way, per person

Lowest fares Aviasales travelers found in recent searches; some may include a connection. Prices change often — tap a month to see live fares.

Weekly schedule

Monday

  • AS60706:02→08:492h 47mAlaska Airlines
  • DL381606:20→09:243h 4mDelta Air Lines
  • AS47511:13→13:562h 43mAlaska Airlines
  • DL407011:56→14:552h 59mDelta Air Lines
  • AS57514:13→16:562h 43mAlaska Airlines
  • F9227517:15→20:112h 56mFrontier Airlines
  • DL403118:00→20:592h 59mDelta Air Lines
  • AS59218:56→21:392h 43mAlaska Airlines

Tuesday

  • AS60706:02→08:492h 47mAlaska Airlines
  • DL381606:20→09:243h 4mDelta Air Lines
  • AS47511:13→13:562h 43mAlaska Airlines
  • DL407011:56→14:552h 59mDelta Air Lines
  • AS57514:13→16:562h 43mAlaska Airlines
  • DL403118:00→20:592h 59mDelta Air Lines

Wednesday

  • AS60706:02→08:492h 47mAlaska Airlines
  • DL381606:20→09:243h 4mDelta Air Lines
  • AS47511:13→13:562h 43mAlaska Airlines
  • DL407011:56→14:552h 59mDelta Air Lines
  • AS57514:13→16:562h 43mAlaska Airlines
  • DL403118:00→20:592h 59mDelta Air Lines

Thursday

  • AS60706:02→08:492h 47mAlaska Airlines
  • DL381606:20→09:243h 4mDelta Air Lines
  • AS47511:13→13:562h 43mAlaska Airlines
  • DL407011:56→14:552h 59mDelta Air Lines
  • AS57514:13→16:562h 43mAlaska Airlines
  • F9227517:15→20:112h 56mFrontier Airlines
  • DL403118:00→20:592h 59mDelta Air Lines
  • AS59218:56→21:392h 43mAlaska Airlines

Friday

  • AS60706:02→08:492h 47mAlaska Airlines
  • DL381606:20→09:243h 4mDelta Air Lines
  • AS47511:13→13:562h 43mAlaska Airlines
  • DL407011:56→14:552h 59mDelta Air Lines
  • AS57514:13→16:562h 43mAlaska Airlines
  • F9227517:15→20:112h 56mFrontier Airlines
  • DL403118:00→20:592h 59mDelta Air Lines
  • AS59218:56→21:392h 43mAlaska Airlines

Saturday

  • AS60706:02→08:492h 47mAlaska Airlines
  • DL381606:20→09:243h 4mDelta Air Lines
  • AS47511:13→13:562h 43mAlaska Airlines
  • DL403118:00→20:592h 59mDelta Air Lines

Sunday

  • AS60706:02→08:492h 47mAlaska Airlines
  • DL381606:20→09:244h 4mDelta Air Lines
  • AS47511:13→13:562h 43mAlaska Airlines
  • DL407011:56→14:552h 59mDelta Air Lines
  • WN127212:40→16:353h 55mSouthwest Airlines
  • AS57514:13→16:562h 43mAlaska Airlines
  • F9227517:15→20:112h 56mFrontier Airlines
  • DL403118:00→20:592h 59mDelta Air Lines
  • AS59218:56→21:392h 43mAlaska Airlines

Ontario to Seattle — frequently asked

How long is the flight from Ontario to Seattle?
ONT–SEA is 2h 43m nonstop, covering 1,540 km (957 mi).
Which airlines fly nonstop from Ontario to Seattle?
Alaska Airlines, Delta Air Lines, Frontier Airlines, Southwest Airlines operate this route nonstop.
How much is a flight from Ontario to Seattle?
One-way fares on ONT–SEA recently started from $106 ($142 nonstop). Fares change daily, so check current prices before booking.
How often do flights run from Ontario to Seattle?
The route is served 7 days a week (49 scheduled departures).