Cheap flights from Portland, OR to Ontario, CA

Flights starting at $33. Choose between Frontier Airlines, Alaska Airlines, or Spirit Airlines to find the best price.

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The distance between Portland and Ontario is 1352 km. The most popular airlines for this route are Frontier Airlines, Alaska Airlines, Spirit Airlines, United Airlines, and Ravn Alaska. Portland and Ontario have 144 direct flights per week.

Weekly direct flights

Discover the top airlines offering direct flights from Portland 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 17.03 - Sat 23.03

AirlineSun 17.03Mon 18.03Tue 19.03Wed 20.03Thu 21.03Fri 22.03Sat 23.03
2333333
---------------------

Weekly direct flights for Sun 24.03 - Sat 30.03

AirlineSun 24.03Mon 25.03Tue 26.03Wed 27.03Thu 28.03Fri 29.03Sat 30.03
3332333
---------------------

Weekly direct flights for Sun 31.03 - Sat 06.04

AirlineSun 31.03Mon 01.04Tue 02.04Wed 03.04Thu 04.04Fri 05.04Sat 06.04
3333533
---------------------

Weekly direct flights for Sun 07.04 - Sat 13.04

AirlineSun 07.04Mon 08.04Tue 09.04Wed 10.04Thu 11.04Fri 12.04Sat 13.04
3333333
---------1111

Check-in for a flight from Portland to Ontario

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
Alaska AirlinesASAASNoOpens 24 days before flight
Closes 1 hours before flight
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
United AirlinesUALUAYesNo
Ravn Alaska 7HYesOpens 24 days before flight
Closes 2 hours before flight

Weather in Ontario

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January18°C7°C
February18°C7°C
March20°C8°C
April23°C10°C
May25°C13°C
June29°C16°C
July33°C19°C
August33°C20°C
September32°C18°C
October27°C15°C
November22°C10°C
December17°C7°C
Hottest Month
33°C
August
Coldest month
7°C
February
Sunny days
339
days per year

14 day forecast

Monday
18 Mar
23°C10°C
25 Mar
79%
17°C9°C
Tuesday
19 Mar
23°C11°C
26 Mar
18°C9°C
Wednesday
20 Mar
23°C11°C
27 Mar
89%
12°C8°C
Thursday
21 Mar
23°C12°C
28 Mar
87%
11°C7°C
Friday
22 Mar
23°C11°C
29 Mar
89%
14°C8°C
Saturday
23 Mar
88%
16°C12°C
30 Mar
89%
15°C11°C
Sunday
24 Mar
84%
14°C9°C
31 Mar
21°C9°C

Frequently asked questions

How long does it take to travel from Portland to Ontario?
What is the flight distance between Portland and Ontario?
What airlines offer nonstop (direct) flights between Portland and Ontario?
What are the most popular routes to and from Portland?
What are the most popular routes to and from Ontario?
What airports are near Portland?
What airports are near Ontario?
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Portland and Ontario?
What is Virtual Interlining and how do I use it?
Which airlines fly between Portland and Ontario?
When's the best time to travel between Portland and Ontario?
What flights operate between Portland and Ontario?
How many airports are there near Portland?
How many airports are there near Ontario?
What time do nonstop (direct) flights between Portland and Ontario depart?
What time do nonstop (direct) flights between Portland and Ontario arrive?
What time do flights between Portland and Ontario depart?
What time do flights between Portland and Ontario arrive?

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