Find deals on flights from Ontario from $51

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight departing on 10/27. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
Economy
0 bags
Sat 10/28
Sat 11/4
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Where can I fly from Ontario?

Prices from ONT, departing Sat 10/28 and returning Sat 11/4

Good to know

Low season

January

High season

May

Cheapest flight

$51
Best time to beat the crowds but there is an average 23% increase in price.
Most popular time to fly and prices are also 19% lower on average.
Flight from Ontario to Phoenix

Top tips for finding a cheap flight out of Ontario

  • Looking for a cheap flight? 25% of our users found tickets from Ontario to the following destinations at these prices or less: Dallas $139 one-way - $226 round-trip; Las Vegas $36 one-way - $65 round-trip; Taipei City $558 one-way - $929 round-trip
  • Book at least 3 weeks before departure in order to get a below-average price.
  • High season is considered to be June and July. The cheapest month to fly from Ontario is January.
  • Morning departure is around 9% cheaper than an evening flight, on average*.
  • Flights from Ontario depart from Ontario International Airport (ONT). Most passengers use Ontario International Airport from Ontario to Mexico and Las Vegas.
  • It would take you approximately 5 minutes to cover the 3 miles connecting the Ontario city center to Ontario International Airport. If you are in a hurry, consider using a private means of transport such as a taxi, Uber, or car rental. A bus or a train is an alternative means of transport if you are not in a hurry to catch your flight.
  • Travelers with the earliest flight from the airport should consider staying in one of the hotels close to it. For instance, you can book a room at Holiday Inn Ontario Airport. This hotel is a 3-minute walk to ONT and provides a complimentary airport shuttle to its guests who are connecting to the airport for a flight and have pieces of luggage.
  • Never leave your pet behind if you have a flight from Ontario through Ontario International Airport. The airport considers animals by building several pet relief areas inside and outside. These areas are close to gates 210 in Terminal 2 and 410 in Terminal 4. The outside pet relief area is located at the end of the terminal building.
  • Everyone understands how stressful it is to travel with children on long vacations. JetBlue Airlines is a good option if you are flying with children from Ontario. This airline provides kid-friendly amenities such as video games, subscribed cartoon channels, plane toys, and free refreshments to keep kids entertained during the flight. This airline's planes boast big, pleasant seats with ample legroom, making it ideal for parents with children on their laps.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for booking flights out of Ontario

  • Do flights from Ontario via Ontario International Airport (ONT) consider persons with reduced mobility?

    Special needs passengers, such as those with restricted mobility or impaired vision, will find it easier to fly from Ontario via ONT. To assist these passengers, all airlines have workers stationed throughout the airport. Anyone who requires special airport services should make their request while making their travel arrangements.

  • Can I park my car at Ontario International Airport?

    Different types of parking indicate the probability of parking your car at the airport. If you've arrived at the airport and have a to-and-fro flight from Ontario, consider parking your car at private, public, or valet parking lots with a surcharge both for short and long parking.

  • Are there nursing rooms at Ontario International Airport?

    Lactating mothers are much considered on flights from Ontario via ONT, for it features two nursing rooms for them. One of these nursing rooms is situated in Terminal 2 on the second floor past the TSA screening across from gate 204, next to the women's restroom. The other one is at Terminal 4 on the second floor across from gate 407, next to the family restroom.

  • Which airlines have lounges at Ontario International Airport in Ontario?

    Consider using the Aspire Lounge in Terminal 2, open to guests traveling with United, Alaska, Frontier, and Delta airlines. The lounge provides unparalleled airfield views, excellent food, and comfortable seating to work or relax.

  • Which are the most popular places to fly to from Ontario?

    Based on KAYAK flight searches, the most popular place to fly from Ontario is New York (12% of total searches). The next most popular destinations are Seattle/Tacoma Intl (7%) and Dallas (6%). Searches for flights from Ontario to San Francisco (6%), to Tokyo (4%) and to Las Vegas Harry Reid Intl (4%) are also popular.

  • What are the best deals and cheap flights from Ontario?

    The cheapest one-way flight from Ontario found on KAYAK in the last 72 hours was to Phoenix Sky Harbor Intl ($51). The cheapest round-trip flight from Ontario on KAYAK in the last 72 hours was to Dallas/Fort Worth ($62). Other cheap flights from Ontario found on KAYAK in the last 72 hours include flights to Phoenix Sky Harbor Intl ($62 round-trip), to Las Vegas Harry Reid Intl ($62 round-trip) and to San Francisco ($62 round-trip).

  • Which cities can I fly to direct from Ontario?

    There are many destinations you can fly to non-stop from Ontario. The most popular are:
    Flights to San Francisco
    Flights to Denver Intl
    Flights to Portland
    Flights to Salt Lake City
    Flights to Nashville Intl
  • Which international cities can I fly to direct from Ontario?

    There are many international destinations you can fly to non-stop from Ontario. The most popular are:
  • What is the longest direct flight from Ontario?

    The longest direct flight you can take from Ontario is to Singapore, with a duration of 18 hours.

  • What is Ontario also known as?

    Ontario Airport’s airport code is ONT. It can also be referred to as Ontario, Ontario Intl.

  • Which airlines have a flexible cancellation policy for flights from Ontario to Worldwide due to COVID-19?

    Southwest, American Airlines and Frontier have all waived their change and cancellation fees on flights from Ontario to Worldwide. Confirm policies on booking site.

  • How does KAYAK find such low prices on flights from Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to your destination with an airline and back to Ontario with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Book cheap domestic flights from Ontario

Recent round-trip flight deals

12/6Wed
nonstopFrontier
2h 22mONT-DEN
12/6Wed
nonstopFrontier
2h 31mDEN-ONT
$33
11/29Wed
nonstopFrontier
2h 58mONT-DFW
12/5Tue
nonstopFrontier
3h 22mDFW-ONT
$38
10/10Tue
nonstopFrontier
1h 16mONT-LAS
10/17Tue
nonstopFrontier
1h 11mLAS-ONT
$38
10/28Sat
nonstopFrontier
1h 32mONT-SFO
10/30Mon
nonstopFrontier
1h 25mSFO-ONT
$38
11/1Wed
nonstopFrontier
2h 22mONT-DEN
11/4Sat
nonstopFrontier
2h 31mDEN-ONT
$38
10/23Mon
nonstopFrontier
1h 11mONT-LAS
10/24Tue
nonstopFrontier
1h 05mLAS-ONT
$39
10/14Sat
nonstopFrontier
1h 16mONT-LAS
10/17Tue
nonstopFrontier
1h 10mLAS-ONT
$40
10/31Tue
nonstopFrontier
2h 24mONT-DEN
11/8Wed
nonstopFrontier
2h 29mDEN-ONT
$40
10/11Wed
1 stopMultiple Airlines
9h 55mONT-DFW
11/14Tue
nonstopMultiple Airlines
3h 18mDFW-ONT
$76
10/9Mon
1 stopMultiple Airlines
15h 25mONT-DFW
11/7Tue
nonstopMultiple Airlines
3h 18mDFW-ONT
$82

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Recent one-way flight deals

10/27Fri
nonstopFrontier
1h 11mONT-LAS
$30
11/13Mon
nonstopFrontier
1h 32mONT-SFO
$30
11/2Thu
nonstopFrontier
2h 22mONT-DEN
$30
11/15Wed
nonstopFrontier
3h 05mONT-DFW
$31
10/6Fri
nonstopFrontier
1h 19mONT-LAS
$31
10/16Mon
nonstopFrontier
1h 29mONT-SFO
$31
2/10Sat
nonstopFrontier
2h 57mONT-DFW
$32
10/3Tue
nonstopFrontier
1h 18mONT-LAS
$32
10/5Thu
1 stopMultiple Airlines
12h 57mONT-SEA
$51
11/4Sat
nonstopAlaska Airlines
2h 46mONT-SEA
$59

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Last minute flights from Ontario to Anywhere

Last minute flight, train and bus deals

10/3Tue
multi-stopFrontier
9h 57mONT-DEN
10/5Thu
multi-stopFrontier
13h 41mDEN-ONT
$83
10/3Tue
multi-stopFrontier
4h 13mONT-SFO
10/3Tue
multi-stopFrontier
14h 43mSFO-ONT
$84
9/30Sat
nonstopFrontier
1h 21mONT-LAS
10/2Mon
nonstopFrontier
1h 09mLAS-ONT
$88
10/3Tue
nonstopFrontier
2h 30mONT-DEN
10/8Sun
multi-stopFrontier
12h 25mDEN-ONT
$88
10/1Sun
nonstopMultiple Airlines
1h 00mONT-LAS
10/3Tue
nonstopMultiple Airlines
1h 08mLAS-ONT
$90
10/1Sun
nonstopMultiple Airlines
1h 00mONT-LAS
10/3Tue
nonstopMultiple Airlines
1h 08mLAS-ONT
$91
10/1Sun
nonstopFrontier
1h 18mONT-LAS
10/24Tue
multi-stopFrontier
21h 30mLAS-ONT
$92
9/30Sat
nonstopMultiple Airlines
1h 21mONT-LAS
10/2Mon
nonstopMultiple Airlines
1h 00mLAS-ONT
$93
10/3Tue
multi-stopFrontier
5h 20mONT-DEN
10/14Sat
multi-stopFrontier
4h 46mDEN-ONT
$97
9/29Fri
nonstopRavn Alaska
1h 00mONT-LAS
10/2Mon
nonstopRavn Alaska
1h 00mLAS-ONT
$158

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Book cheap international flights from Ontario

Recent round-trip flight deals

10/27Fri
multi-stopFrontier
14h 59mONT-CUN
11/3Fri
multi-stopFrontier
10h 56mCUN-ONT
$228
10/28Sat
multi-stopFrontier
15h 30mONT-CUN
11/1Wed
multi-stopFrontier
20h 49mCUN-ONT
$233
11/29Wed
multi-stopFrontier
8h 03mONT-CUN
12/7Thu
multi-stopFrontier
10h 44mCUN-ONT
$234
11/27Mon
multi-stopMultiple Airlines
10h 40mONT-CUN
12/6Wed
multi-stopMultiple Airlines
10h 44mCUN-ONT
$285
10/24Tue
multi-stopMultiple Airlines
17h 40mONT-CUN
11/1Wed
multi-stopMultiple Airlines
10h 08mCUN-ONT
$335
10/29Sun
multi-stopAmerican Airlines
7h 06mONT-CUN
11/7Tue
multi-stopAmerican Airlines
8h 19mCUN-ONT
$360
10/9Mon
multi-stopAvianca
10h 10mONT-CUN
10/12Thu
multi-stopAvianca
10h 50mCUN-ONT
$370
10/24Tue
multi-stopAmerican Airlines
10h 50mONT-CUN
11/1Wed
multi-stopAmerican Airlines
12h 10mCUN-ONT
$371
11/14Tue
multi-stopUnited Airlines
7h 20mONT-CUN
11/28Tue
multi-stopUnited Airlines
19h 18mCUN-ONT
$372
10/23Mon
multi-stopAvianca
10h 10mONT-CUN
10/31Tue
multi-stopAvianca
10h 30mCUN-ONT
$389

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Recent one-way flight deals

10/29Sun
multi-stopFrontier
15h 40mONT-CUN
$108
11/3Fri
multi-stopFrontier
14h 56mONT-CUN
$109
2/11Sun
multi-stopFrontier
21h 05mONT-CUN
$116
1/29Mon
multi-stopAmerican Airlines
7h 58mONT-CUN
$123
2/12Mon
multi-stopAmerican Airlines
7h 58mONT-CUN
$128
10/6Fri
multi-stopMultiple Airlines
42h 48mONT-CUN
$160
12/11Mon
multi-stopUnited Airlines
16h 07mONT-CUN
$167
2/24Sat
multi-stopAeromexico
11h 00mONT-CUN
$170
10/21Sat
multi-stopMultiple Airlines
23h 49mONT-CUN
$181
1/3Wed
multi-stopUnited Airlines
11h 24mONT-CUN
$227

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Flights from Ontario to Anywhere

Departure:

Ontario (ONT)United States

Return flight deals:

Anywhere - Ontario

Cabin classes:

$340
$297
$408
$40