Cheap flights from Seattle, WA to Ontario, CA
Flights starting at $44. Choose between Alaska Airlines, Frontier Airlines, or United Airlines to find the best price.
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Tips to know when travelling to Ontario
Cheapest one-way trip | $44 |
---|---|
Cheapest round-trip | $92 |
Average round-trip | $202 |
Nonstop flights in June | $53 – $293 |
Most popular airline | Alaska Airlines |
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Travelers usually depart from Seattle–Tacoma International, or Kenmore Air Harbor Seaplane Base when they travel from Seattle to Ontario. The distance between Seattle and Ontario is 1542 km. The most popular airlines for this route are Alaska Airlines, Frontier Airlines, and United Airlines. Seattle and Ontario have 43 direct flights per week.
Weekly direct flights
Discover the top airlines offering direct flights from Seattle to Ontario in the next month. You’ll find the number of daily direct flights per airline in the table.
Weekly direct flights for Sun 02.06 - Sat 08.06
Airline | Sun 02.06 | Mon 03.06 | Tue 04.06 | Wed 05.06 | Thu 06.06 | Fri 07.06 | Sat 08.06 |
---|---|---|---|---|---|---|---|
4 | 4 | 4 | 4 | 4 | 4 | 4 | |
1 | 1 | 1 | 1 | 1 | 1 | 1 |
Weekly direct flights for Sun 09.06 - Sat 15.06
Airline | Sun 09.06 | Mon 10.06 | Tue 11.06 | Wed 12.06 | Thu 13.06 | Fri 14.06 | Sat 15.06 |
---|---|---|---|---|---|---|---|
4 | 4 | 4 | 4 | 4 | 4 | 4 | |
1 | 1 | 1 | 1 | 1 | 1 | 1 |
Weekly direct flights for Sun 16.06 - Sat 22.06
Airline | Sun 16.06 | Mon 17.06 | Tue 18.06 | Wed 19.06 | Thu 20.06 | Fri 21.06 | Sat 22.06 |
---|---|---|---|---|---|---|---|
4 | 4 | 4 | 4 | 4 | 4 | 4 | |
1 | 1 | 1 | 1 | 1 | 1 | 1 |
Weekly direct flights for Sun 23.06 - Sat 29.06
Airline | Sun 23.06 | Mon 24.06 | Tue 25.06 | Wed 26.06 | Thu 27.06 | Fri 28.06 | Sat 29.06 |
---|---|---|---|---|---|---|---|
4 | 4 | 4 | 4 | 4 | 4 | 4 | |
1 | 1 | 1 | 1 | 1 | 1 | 1 |
Check-in for a flight from Seattle to Ontario
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
Alaska Airlines | ASA | AS | No | Opens 24 days before flight Closes 1 hours before flight |
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
United Airlines | UAL | UA | Yes | No |
Weather in Ontario
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 18°C | 7°C |
February | 18°C | 7°C |
March | 20°C | 8°C |
April | 23°C | 10°C |
May | 25°C | 12°C |
June | 29°C | 16°C |
July | 33°C | 19°C |
August | 33°C | 20°C |
September | 32°C | 18°C |
October | 27°C | 15°C |
November | 22°C | 10°C |
December | 17°C | 7°C |
14 day forecast
Frequently asked questions
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