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Seattle-Tacoma International Airport to Ontario International Airport flight
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Cheap Flights from Seattle-Tacoma International Airport to Ontario International Airport

Search for flights from Seattle to Los Angeles. Find affordable one-way or round-trip flights.

  • One way
  • Round-trip
      • Cheapest nonstop
        SEA16:35
        2h 39m
        Nonstop
        ONT19:14
        Seattle - Ontario|Thu, Jan 9|Frontier Airlines
        MYR 84MYR 207
        59% OFF
        59% OFF
        MYR 207MYR 84

        Choose Frontier Airlines flights from Seattle to Ontario.The one-way direct flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Thu, Jan 9, arriving at Ontario International Airport.One-way Prices start from MYR 84 including taxes and charges.

      • SEA16:35
        2h 37m
        Nonstop
        ONT19:12
        Seattle - Ontario|Thu, Jan 16|Frontier Airlines
        MYR 130MYR 207
        37% OFF
        37% OFF
        MYR 207MYR 130

        Choose Frontier Airlines flights from Seattle to Ontario.The one-way direct flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Thu, Jan 16, arriving at Ontario International Airport.One-way Prices start from MYR 130 including taxes and charges.

      • SEA16:35
        2h 37m
        Nonstop
        ONT19:12
        Seattle - Ontario|Thu, Jan 30|Frontier Airlines
        MYR 133MYR 207
        36% OFF
        36% OFF
        MYR 207MYR 133

        Choose Frontier Airlines flights from Seattle to Ontario.The one-way direct flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Thu, Jan 30, arriving at Ontario International Airport.One-way Prices start from MYR 133 including taxes and charges.

      • SEA13:36
        2h 37m
        Nonstop
        ONT16:13
        Seattle - Ontario|Thu, Feb 20|Frontier Airlines
        MYR 147
        MYR 147

        Choose Frontier Airlines flights from Seattle to Ontario.The one-way direct flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Thu, Feb 20, arriving at Ontario International Airport.One-way Prices start from MYR 147 including taxes and charges.

      • SEA19:01
        2h 38m
        Nonstop
        ONT21:39
        Seattle - Ontario|Tue, Dec 31|Frontier Airlines
        MYR 175
        MYR 175

        Choose Frontier Airlines flights from Seattle to Ontario.The one-way direct flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Tue, Dec 31, arriving at Ontario International Airport.One-way Prices start from MYR 175 including taxes and charges.

      • SEA12:52
        2h 37m
        Nonstop
        ONT15:29
        Seattle - Ontario|Thu, Mar 13|Frontier Airlines
        MYR 175
        MYR 175

        Choose Frontier Airlines flights from Seattle to Ontario.The one-way direct flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Thu, Mar 13, arriving at Ontario International Airport.One-way Prices start from MYR 175 including taxes and charges.

      • SEA17:40
        2h 33m
        Nonstop
        ONT20:13
        Seattle - Ontario|Tue, Jan 7|Alaska Airlines
        MYR 183
        MYR 183

        Choose Alaska Airlines flights from Seattle to Ontario.The one-way direct flight with Alaska Airlines departs from Seattle-Tacoma International Airport on Tue, Jan 7, arriving at Ontario International Airport.One-way Prices start from MYR 183 including taxes and charges.

      • SEA20:38
        2h 34m
        Nonstop
        ONT23:12
        Seattle - Ontario|Sun, Jan 12|Alaska Airlines
        MYR 185
        MYR 185

        Choose Alaska Airlines flights from Seattle to Ontario.The one-way direct flight with Alaska Airlines departs from Seattle-Tacoma International Airport on Sun, Jan 12, arriving at Ontario International Airport.One-way Prices start from MYR 185 including taxes and charges.

      • SEA20:05
        2h 34m
        Nonstop
        ONT22:39
        Seattle - Ontario|Mon, Jan 27|Alaska Airlines
        MYR 186
        MYR 186

        Choose Alaska Airlines flights from Seattle to Ontario.The one-way direct flight with Alaska Airlines departs from Seattle-Tacoma International Airport on Mon, Jan 27, arriving at Ontario International Airport.One-way Prices start from MYR 186 including taxes and charges.

      • SEA16:35
        2h 37m
        Nonstop
        ONT19:12
        Seattle - Ontario|Thu, Jan 23|Frontier Airlines
        MYR 190
        MYR 190

        Choose Frontier Airlines flights from Seattle to Ontario.The one-way direct flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Thu, Jan 23, arriving at Ontario International Airport.One-way Prices start from MYR 190 including taxes and charges.

      • SEA01:00 pm
        3h 5m
        Nonstop
        ONT02:00 pm
        Seattle - Los Angeles|Tue, Dec 31|Frontier Airlines
        Find More Flights
        Find More Flights

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

Selected Airlines from Seattle-Tacoma International Airport to Ontario International Airport

View airlines operating flights from Seattle to Los Angeles. Compare prices and find the airline that meets your travel needs to enjoy a comfortable journey.

Frontier Airlines
From MYR 84
Alaska Airlines
From MYR 183
Delta Air Lines
From MYR 218
United Airlines
From MYR 447
American Airlines
From MYR 467
Southwest Airlines
From MYR 1,172
Hawaiian Airlines
From MYR 1,750

Find more flights and airlines

Find Cheaper Flights from Seattle to Los Angeles. Enjoy nonstop flights with 1 airline

Explore other flights from Seattle to Los Angeles. Find the best alternative flight.

  • Cheapest
    Frontier Airlines
    SEA
    13:58
    2h 42m
    Nonstop
    LAX
    16:40
    Seattle-Tacoma International Airport - Los Angeles International Airport
    Sat, Feb 1Frontier Airlines
    MYR 78
  • Frontier Airlines
    SEA
    13:58
    2h 42m
    Nonstop
    LAX
    16:40
    Seattle-Tacoma International Airport - Los Angeles International Airport
    Sat, Feb 1Frontier Airlines
    MYR 78
    Find More Flights

Seattle-Tacoma International Airport to Ontario International Airport Flights Info

Flight distance1,540.96 km
Cheapest one-way ticket priceMYR 84
Cheapest return ticket priceMYR 127

FAQs for Seattle-Tacoma International Airport to Ontario International Airport Flights

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

    It takes around 2 hours 39 minutes to fly from Seattle-Tacoma International Airport (SEA) to Ontario International Airport (ONT).

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

    There are around 5 daily flights from Seattle-Tacoma International Airport (SEA) to Ontario International Airport (ONT).

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

    Tickets cost around MYR 366 in February, making it the cheapest month to book. Seattle-Tacoma International 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 International Airport (SEA) to Ontario International Airport (ONT) most expensive?

    The route from Seattle-Tacoma International Airport (SEA) to Ontario International Airport (ONT) is quite popular. Without considering departure times or holidays, tickets cost around MYR 1,126 in December, the most expensive month to book this route.

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

    The earliest flight departs from Seattle-Tacoma International Airport (SEA) at 07:10 and arrives in Ontario International Airport (ONT) at 10:01.

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

    The latest flight departs from Seattle-Tacoma International 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 International 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.

  • What's the closest airport to Ontario International Airport (ONT)?

    The closest airport to Ontario International Airport (ONT) is Chino Airport. The distance is around 9 km.

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

    Alaska Airlines is a very popular airline operating an average of 5235 flights per month.

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