Cheap Flights from Seattle Tacoma Intl. Airport to Ontario International Airport

Search for flights from Seattle to Los Angeles and check out affordable one-way and round-trip options.

  • Round-trip
  • One way

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Selected Airlines from Seattle Tacoma Intl. Airport to Ontario International Airport

See which airlines fly from Seattle to Los Angeles. Find the airline that best meets your travel needs by comparing prices and treat yourself to an enjoyable journey.

Frontier Airlines
From $30
Delta Air Lines
From $39
Hawaiian Airlines
From $58
Alaska Airlines
From $60
United Airlines
From $101
American Airlines
From $108
Southwest Airlines
From $117

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Flight Schedule from Seattle Tacoma Intl. Airport to Ontario International Airport

Check the schedule for flights from Seattle to Los Angeles and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. AS1088

    Seattle Tacoma Intl. Airport

    5:55 PM

    SEA

    2h 34m

    Nonstop

    8:29 PM

    ONT

    - M - - - - -
    Search

  2. F93163

    Seattle Tacoma Intl. Airport

    1:50 PM

    SEA

    2h 40m

    Nonstop

    4:30 PM

    ONT

    S - - W T - S
    Search

  3. AS1003

    Seattle Tacoma Intl. Airport

    8:15 PM

    SEA

    2h 31m

    Nonstop

    10:46 PM

    ONT

    S - - W T - S
    Search

  4. AS1254

    Seattle Tacoma Intl. Airport

    8:26 AM

    SEA

    2h 31m

    Nonstop

    10:57 AM

    ONT

    S M T W T F S
    Search

  5. HA6814

    Seattle Tacoma Intl. Airport

    8:26 AM

    SEA

    2h 31m

    Nonstop

    10:57 AM

    ONT

    S M T W T F S
    Search

  6. DL4027

    Seattle Tacoma Intl. Airport

    7:55 PM

    SEA

    2h 46m

    Nonstop

    10:41 PM

    ONT

    S M T W T F S
    Search

  7. DL4031

    Seattle Tacoma Intl. Airport

    2:35 PM

    SEA

    2h 47m

    Nonstop

    5:22 PM

    ONT

    S M T W T F S
    Search

  8. DL4070

    Seattle Tacoma Intl. Airport

    7:59 AM

    SEA

    2h 54m

    Nonstop

    10:53 AM

    ONT

    S M T W T F S
    Search

  9. F94830

    Seattle Tacoma Intl. Airport

    8:53 PM

    SEA

    2h 37m

    11:30 PM

    LAS

    S M - W - F S
    Search

  10. F92231

    Harry Reid Intl. Airport

    7:45 PM

    LAS

    1h 7m

    8:52 PM

    ONT

    S M T - T F -

  11. DL1239

    Seattle Tacoma Intl. Airport

    7:00 PM

    SEA

    2h 3m

    10:03 PM

    SLC

    S M T W T - S
    Search

  12. DL1614

    Salt Lake City International Airport

    11:05 PM

    SLC

    1h 51m

    11:56 PM

    ONT

    S M T W T F S
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Seattle Tacoma Intl. Airport to Ontario International Airport Flights Info

Flight distance 1,540.96 km
Cheapest one-way ticket price $29
Cheapest return ticket price $54

FAQs for Seattle Tacoma Intl. Airport to Ontario International Airport Flights

  • How long is a flight from Seattle Tacoma Intl. Airport to Ontario International Airport?

    It takes around 2 hours 49 minutes to fly from Seattle Tacoma Intl. Airport (SEA) to Ontario International Airport (ONT).

  • How many daily flights are there from Seattle Tacoma Intl. Airport (SEA) to Ontario International Airport (ONT)?

    There are around 10 daily flights from Seattle Tacoma Intl. Airport (SEA) to Ontario International Airport (ONT).

  • When are flight tickets from Seattle Tacoma Intl. Airport (SEA) to Ontario International Airport (ONT) the cheapest?

    Tickets cost around $109 in May, making it the cheapest month to book. Seattle Tacoma Intl. Airport (SEA) to Ontario International Airport (ONT) is a popular route, so don't forget to book your tickets in advance.

  • When are flight tickets from Seattle Tacoma Intl. Airport (SEA) to Ontario International Airport (ONT) most expensive?

    The route from Seattle Tacoma Intl. Airport (SEA) to Ontario International Airport (ONT) is quite popular. Without considering departure times or holidays, tickets cost around $176 in March, the most expensive month to book this route.

  • What time does the earliest flight from Seattle Tacoma Intl. Airport to Ontario International Airport depart?

    The earliest flight departs from Seattle Tacoma Intl. Airport (SEA) at 05:05 and arrives in Ontario International Airport (ONT) at 12:24.

  • What time does the latest flight from Seattle Tacoma Intl. Airport to Ontario International Airport depart?

    The latest flight departs from Seattle Tacoma Intl. Airport (SEA) at 21:23 and arrives in Ontario International Airport (ONT) at 23:59.

  • What is the transportation method from the main airport to downtown in Los Angeles?

    • The distance from Los Angeles Intl. Airport to downtown is about 19 km. It takes about 30 minutes by taxi.
    • The distance from Ontario International Airport to downtown is about 59 km. It takes about 1 hour 10 minutes by taxi.

  • Which airline operates the most direct flights from Seattle Tacoma Intl. Airport (SEA) to Ontario International Airport (ONT)?

    Alaska Airlines is a very popular airline operating an average of 5041 flights per month.

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