Find cheap flights to Ontario

Round-trip
1 adult
Economy
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Sat 9/25
Sat 10/2

Travel Restriction Alert

The COVID-19 (coronavirus) outbreak may impact travel from United States to Ontario.
View current United States travel restrictions

When is the best time to fly to Ontario?

  • What is the absolute cheapest flight to Ontario?

    In the past two weeks, users have booked deals to Ontario for $66/person, which is 88% cheaper than the average flight to Ontario. To find the cheapest price to Ontario from your area, use momondo’s Airport-to-Airport Pricing Tool.

  • What is the cheapest month to fly to Ontario?

    In general, August is the cheapest month to fly from United States to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $261. If you aren’t able to travel during the month of August, then book flights to Ontario from United States during July instead. Flights to Ontario in July, while not as cheap as those in August, still average around $264.

  • How far in advance should I book a flight to Ontario?

    Most flyers found that booking tickets 43 days in advance of their planned departure date is the best time to get cheap flights to Ontario. During this timeframe, flight prices are around $315. However, in the past 72 hours, people saw flights from United States for as low as $44.

  • What is the cheapest day to depart on your flight to Ontario?

    The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as $327. This is often the case because there is less demand to fly during this day of the week. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from United States to Ontario for around $384.

  • What is the cheapest time of day to depart on your flight to Ontario?

    In the evening is the cheapest time of day to fly from United States to Ontario when you can find flight prices for as low as $308. Flying to Ontario in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $437 on average. Flights to Ontario from United States in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

  • Is there a good place to hike near Ontario?

    If you’re looking to do your hiking in warmer conditions, consider planning your flight to Ontario for January, February, and March. Parks like Old Town San Diego State Historic Park are popular hot spots in those months.

  • Is there an alternative airport near Ontario?

    Finding an alternative and possibly cheaper destination airport near Ontario is possible. If you are planning a flight to Ontario, consider booking flights to San Bernardino Int Airport (24 mi from Ontario city center), Santa Ana J. Wayne/Orange Cnty Airport (29 mi from Ontario city center), Long Beach Municipal Airport (33 mi from Ontario city center), Burbank Bob Hope Airport (42 mi from Ontario city center) or Los Angeles Airport (44 mi from Ontario city center).

  • Is there a cheaper alternative to flying into Ontario?

    Prices vary based on where travelers are departing from, but on average, the cheapest airport to fly to in Ontario is Burbank Bob Hope Airport where the average price is $475pp. Users typically find the best prices when using momondo’s Airport-to-Airport Pricing Tool.


Can I fly to Ontario from United States right now?

Information is based on travel restrictions for travel to Ontario within the United States

Most visitors from United States need to provide a negative COVID-19 test result and/or quarantine to enter Ontario.

COVID-19 testing requirements
Visitors from United States must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Ontario.

Quarantine requirements
Visitors from United States are not required to quarantine after entering Ontario.

Can I fly back to United States from Ontario?

Returning to United States from Ontario

COVID-19 testing requirements
Visitors from Ontario must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to United States.

Quarantine requirements
Visitors from Ontario are not required to quarantine after entering United States.

If you are planning to travel to Ontario at this time, it is recommended that you stay up to date on current restrictions and follow proper safety measures while in public.

Ontario flight deals found on momondo

Check out some of the best fares from airports in United States to Ontario found recently by users on momondo
Frontier
Oct 7
SFO11:40 amSan Francisco
1h 33m
ONT1:13 pmOntario
Oct 11
ONT5:21 amOntario
1h 28m
SFO6:49 amSan Francisco
Frontier
Oct 18
SFO7:34 amSan Francisco
1h 33m
ONT9:07 amOntario
Oct 25
ONT5:21 amOntario
1h 28m
SFO6:49 amSan Francisco
Frontier
Oct 8
DEN8:46 amDenver Intl
2h 27m
ONT11:13 amOntario
Oct 10
ONT4:57 pmOntario
2h 18m
DEN7:15 pmDenver Intl
Frontier
Sep 27
SFO7:35 amSan Francisco
1h 27m
ONT9:02 amOntario
Sep 30
ONT2:00 pmOntario
1h 24m
SFO3:24 pmSan Francisco
Frontier
Sep 25
DEN7:35 amDenver Intl
2h 24m
ONT9:59 amOntario
Oct 1
ONT8:39 pmOntario
2h 22m
DEN11:01 pmDenver Intl
Frontier
Oct 11
SFO7:34 amSan Francisco
1h 33m
ONT9:07 amOntario
Oct 14
ONT1:58 pmOntario
1h 28m
SFO3:26 pmSan Francisco

Find the cheapest one-way flights to Ontario

If you're looking for one-way flights from United States to Ontario, view some of our deals below provided by Frontier
Frontier
Sep 27
SFO7:35 amSan Francisco
1h 27m
ONT9:02 amOntario
Frontier
Oct 21
SFO11:40 amSan Francisco
1h 33m
ONT1:13 pmOntario
Frontier
Oct 6
DFW6:32 amDallas/Fort Worth
3h 10m
ONT9:42 amOntario

Which airlines fly to Ontario?

Here you can see a selection of the most popular and cheapest airlines for flights to Ontario

Popular routes to Ontario

Most frequently searched flights to Ontario along with the cheapest price and shortest flight duration
Las Vegas to Ontario Flights
Fastest flight time1h 02m
Cheapest price$34
Sacramento to Ontario Flights
Fastest flight time1h 22m
Cheapest price$42
Denver to Ontario Flights
Fastest flight time2h 15m
Cheapest price$44
San Francisco to Ontario Flights
Fastest flight time1h 18m
Cheapest price$48
Dallas to Ontario Flights
Fastest flight time3h 06m
Cheapest price$53
Austin to Ontario Flights
Fastest flight time5h 06m
Cheapest price$83
Oakland, California to Ontario Flights
Fastest flight time4h 08m
Cheapest price$90
Salt Lake City to Ontario Flights
Fastest flight time1h 41m
Cheapest price$97
Kansas City to Ontario Flights
Fastest flight time5h 28m
Cheapest price$98
Minneapolis to Ontario Flights
Fastest flight time5h 13m
Cheapest price$104
Chicago to Ontario Flights
Fastest flight time4h 11m
Cheapest price$104
Fort Lauderdale to Ontario Flights
Fastest flight time7h 10m
Cheapest price$108
Portland to Ontario Flights
Fastest flight time2h 08m
Cheapest price$115
Charlotte to Ontario Flights
Fastest flight time4h 51m
Cheapest price$117
Washington to Ontario Flights
Fastest flight time7h 18m
Cheapest price$118
Philadelphia to Ontario Flights
Fastest flight time7h 28m
Cheapest price$118
Atlanta to Ontario Flights
Fastest flight time4h 26m
Cheapest price$118
Orlando to Ontario Flights
Fastest flight time4h 56m
Cheapest price$118
Cincinnati to Ontario Flights
Fastest flight time6h 45m
Cheapest price$118
New York to Ontario Flights
Fastest flight time7h 53m
Cheapest price$123

Start planning your trip to Ontario