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Ontario

Cheap flights from Ontario to anywhere

Fly from Ontario to anywhere in the world.

ONT — SEA
Oct 29 — Nov 51
Tue 10/29
Tue 11/5
1 adult, Economy
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ONT - SEA
Oct 29 - Nov 5

What to know about flights from Ontario

Discover essential information about flights departing from Ontario, including flight schedules, destinations, airlines operating at the Ontario airport, and any specific guidelines or requirements for travelers. Please note that the information is based on the most recent updates available. Data last updated October 24, 2024.

Cheapest one-way flight

$24

Cheapest round-trip flight

$33

Cheapest airline

Alaska Airlines

Most popular destination

Las Vegas Harry Reid Intl (LAS)
The cheapest one-way flight from Ontario is currently to San Jose.
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The cheapest round-trip flight from Ontario is currently to San Jose.
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On average, Alaska Airlines currently has the cheapest one-way flight from Ontario.
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Las Vegas Harry Reid Intl (LAS) is currently the most popular flight destination from Ontario.
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Find flights from Ontario

Cheapest flights from Ontario
Explore the most affordable flight options available from Ontario. Find the lowest fares based on data from user searches, with prices last updated on October 24, 2024.

Sat 11/93:41 pmONT - SFO
Nonstop1h 27mFrontier
Sat 11/161:29 pmSFO - ONT
Nonstop1h 22mFrontier
Deal found 10/23$47
Sat 12/146:45 amONT - DEN
Nonstop2h 25mFrontier
Tue 12/1710:29 pmDEN - ONT
Nonstop2h 30mFrontier
Deal found 10/23$51
Thu 11/217:58 amONT - SEA
Nonstop2h 56mFrontier
Sat 11/237:22 pmSEA - ONT
Nonstop2h 40mFrontier
Deal found 10/23$57
Tue 11/125:45 amONT - DFW
Nonstop3h 02mFrontier
Tue 11/198:57 pmDFW - ONT
Nonstop3h 20mFrontier
Deal found 10/23$77
Fri 11/229:54 amONT - SEA
Nonstop2h 56mMultiple Airlines
Mon 12/99:26 pmSEA - ONT
Nonstop2h 33mMultiple Airlines
Deal found 10/24$93
Tue 11/1211:20 amONT - ORD
1 stop9h 56mFrontier
Mon 11/188:00 amORD - ONT
1 stop8h 24mFrontier
Deal found 10/23$108
Mon 1/66:00 amONT - SEA
Nonstop2h 54mAlaska Airlines
Sat 1/118:00 amSEA - ONT
Nonstop2h 49mAlaska Airlines
Deal found 10/22$117
Thu 11/1410:50 pmONT - JFK
1 stop28h 40mFrontier
Wed 11/207:59 amJFK - ONT
1 stop12h 52mFrontier
Deal found 10/23$126
Sat 11/165:45 amONT - LGA
1 stop13h 20mFrontier
Wed 11/2012:29 pmLGA - ONT
1 stop14h 35mFrontier
Deal found 10/23$128
Fri 11/155:00 pmONT - SEA
1 stop7h 15mDelta
Tue 11/197:10 pmSEA - ONT
1 stop4h 43mDelta
Deal found 10/22$136
Tue 12/36:00 amONT - SFO
Nonstop1h 26mUnited Airlines
Fri 12/610:35 pmSFO - ONT
Nonstop1h 23mUnited Airlines
Deal found 10/23$139
Thu 11/216:00 amONT - SFO
1 stop7h 32mMultiple Airlines
Mon 11/251:43 pmSFO - ONT
Nonstop1h 22mMultiple Airlines
Deal found 10/23$140

Find flights from Ontario within your budget

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Fly to

Any airport

Budget

$47 - $140

Route

Depart

Return

Price

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

Sat 11/9

Nonstop1h 27m

San Francisco

Sat 11/16

Nonstop1h 22m

$47

OntarioDenver Intl

ONT - DEN

ONTDEN

Ontario

Sat 12/14

Nonstop2h 25m

Denver Intl

Tue 12/17

Nonstop2h 30m

$51

OntarioSeattle/Tacoma Intl

ONT - SEA

ONTSEA

Ontario

Thu 11/21

Nonstop2h 56m

Seattle/Tacoma Intl

Sat 11/23

Nonstop2h 40m

$57

OntarioDallas/Fort Worth

ONT - DFW

ONTDFW

Ontario

Tue 11/12

Nonstop3h 02m

Dallas/Fort Worth

Tue 11/19

Nonstop3h 20m

$77

OntarioSeattle/Tacoma Intl

ONT - SEA

ONTSEA

Ontario

Fri 11/22

Nonstop2h 56m

Seattle/Tacoma Intl

Mon 12/9

Nonstop2h 33m

$93

OntarioChicago O'Hare Intl

ONT - ORD

ONTORD

Ontario

Tue 11/12

1 stop9h 56m

Chicago O'Hare Intl

Mon 11/18

1 stop8h 24m

$108

OntarioSeattle/Tacoma Intl

ONT - SEA

ONTSEA

Ontario

Mon 1/6

Nonstop2h 54m

Seattle/Tacoma Intl

Sat 1/11

Nonstop2h 49m

$117

OntarioNew York John F Kennedy Intl

ONT - JFK

ONTJFK

Ontario

Thu 11/14

1 stop28h 40m

New York John F Kennedy Intl

Wed 11/20

1 stop12h 52m

$126

OntarioNew York LaGuardia

ONT - LGA

ONTLGA

Ontario

Sat 11/16

1 stop13h 20m

New York LaGuardia

Wed 11/20

1 stop14h 35m

$128

OntarioSeattle/Tacoma Intl

ONT - SEA

ONTSEA

Ontario

Fri 11/15

1 stop7h 15m

Seattle/Tacoma Intl

Tue 11/19

1 stop4h 43m

$136

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

Tue 12/3

Nonstop1h 26m

San Francisco

Fri 12/6

Nonstop1h 23m

$139

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

Thu 11/21

1 stop7h 32m

San Francisco

Mon 11/25

Nonstop1h 22m

$140

Flights are sorted by cheapest first

Deals found on 10/23

Compare providers for flights from Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario in October
ProviderPrice AccuracyTrust Score*Cancellation Policy
ExpediaPrice Accuracy2 starsTrust Score*3 starsCancellation PolicyAirline Policy
FlightHubPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
eDreamsPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
CheapflightsfaresPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
CheapfaremartPrice Accuracy-Trust Score*3 starsCancellation PolicyAirline Policy
Kiwi.comPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyNo Information
Booking.comPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
PricelinePrice Accuracy1 starTrust Score*3 starsCancellation PolicyAirline Policy
CheapOairPrice Accuracy2 starsTrust Score*3 starsCancellation PolicyAirline Policy
Justfly.comPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: Among all the travel providers offering deals on flights from Ontario, FlightHub has been found to have the most accurate pricing. Users can find the same prices on deals on Cheapflights as FlightHub about >95% of the time. This is based on searches for flights from Ontario made on Cheapflights over the past month and is updated monthly.
  • Most trusted provider: In terms of trustworthiness, Cheapflights users rate FlightHub the highest out of those offering flight deals from Ontario. FlightHub has a user feedback rating of 3 out of 3 stars (3 being the best) and has received the most positive sentiment from Cheapflights users searching for flights from Ontario. This info is gathered from Cheapflights searches over the past month.

Ontario travel tips

Get helpful tips and advice for traveling to or from Ontario. Find recommendations for transportation, accommodations, local attractions, dining options, and other practical tips to enhance your travel experience. Please note that the travel tips are based on general knowledge and recommendations. Data last updated October 24, 2024.
  • If you are a member of the military, you can always go to the USO Lounge at Ontario International Airport (ONT), which provides free drinks, snacks, and access to high-speed Wi-Fi. It can be found directly across from Parking Lot F.
  • Parents will want to take note of the nursing rooms that are scattered throughout Ontario International Airport (ONT). These rooms provide parents with a comfortable place to tend to their children and contain amenities like padded benches, changing tables, and outlets.
  • Ontario International Airport (ONT) has several dining options to choose from, including a few fast-food restaurants, and sit-down restaurants that serve cuisines like American and Italian.

Best time to book a flight from Ontario

Have a flexible travel schedule? Discover the best time to fly from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Ontario

Get recent, data-driven insights about flights from Ontario including ideal travel times, pricing trends, and more.

When is the best time to book a flight from Ontario?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Seattle. Price data was last updated on October 18, 2024.

To ensure you get the cheapest price possible for a flight from Ontario, you should look to book at least 38 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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What is the cheapest month to book a flight from Ontario?

Currently, September is the cheapest month in which you can book a flight from Ontario (average of $48). Flying from Ontario in March will prove the most costly (average of $99). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

When is the cheapest time to fly from Ontario?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Seattle. Price data was last updated on October 20, 2024.

Those who are seeking the cheapest fare on flights departing from Ontario would be wise to consider leaving during Tuesday mornings when prices are typically at their lowest. When considering other options, price-conscious travelers should avoid Sunday evenings when fares are usually the most expensive.

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Which airlines fly from Ontario?

For flights departing from Ontario check dates and pricing for the following: Alaska Airlines, Frontier, Delta, Spirit Airlines, United Airlines. These airlines depart to the following popular destinations: Seattle.

Frontier

Frontier

From $24

American Airlines

American Airlines

From $132

China Airlines

China Airlines

From $759

Delta

Delta

From $45

What are popular destinations to fly to from Ontario?

Some of the most frequent flights departing from Ontario everyday are: Dallas (110 flights per day), Seattle (66 flights per day), and Phoenix (64 flights per day).

Las Vegas Harry Reid Intl

Las Vegas Harry Reid Intl

From $20

Dallas/Fort Worth

Dallas/Fort Worth

From $70

Denver Intl

Denver Intl

From $50

Taipei City Taiwan Taoyuan Intl

Taipei City Taiwan Taoyuan Intl

From $415

What is the cheapest place to fly to from Ontario?

The cheapest city to fly to from Ontario is Las Vegas Harry Reid Intl, with prices starting at $20. Explore other affordable destinations below.

Las Vegas Harry Reid Intl

Las Vegas Harry Reid Intl

From $20

San Francisco

San Francisco

From $24

Portland

Portland

From $39

Santa Rosa Sonoma County

Santa Rosa Sonoma County

From $39

Airline reviews for flights from Ontario

Read reviews and ratings of airlines operating flights from Ontario. Gain insights into the quality of service, in-flight amenities, customer experiences, and overall satisfaction to choose the best airline for your Ontario travel. Please note that the reviews are sourced from user searches and were last updated on October 24, 2024. In the last 7 days, Cheapflights users made a total of 2,462,889 searches.
Southwest
8.1
Very good
5,150 reviews

Entertainment

7.7

Boarding

8.3

Food

7.2

Crew

8.7

Overall

8.1

Comfort

8.1

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Southwest
8.1
Very good
5,150 reviews
Southwest
8.1
Very good
5,150 reviews

Entertainment

7.7

Boarding

8.3

Food

7.2

Crew

8.7

Overall

8.1

Comfort

8.1

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Alaska Airlines
8.0
Very good
9,410 reviews
Southwest
8.1
Very good
5,150 reviews

Entertainment

7.7

Boarding

8.3

Food

7.2

Crew

8.7

Overall

8.1

Comfort

8.1

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Delta
8.0
Very good
8,875 reviews
Southwest
8.1
Very good
5,150 reviews

Entertainment

7.7

Boarding

8.3

Food

7.2

Crew

8.7

Overall

8.1

Comfort

8.1

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

United Airlines
7.4
Good
9,275 reviews
Southwest
8.1
Very good
5,150 reviews

Entertainment

7.7

Boarding

8.3

Food

7.2

Crew

8.7

Overall

8.1

Comfort

8.1

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,150 reviews

Entertainment

7.7

Boarding

8.3

Food

7.2

Crew

8.7

Overall

8.1

Comfort

8.1

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Browse thousands of different options on Cheapflights for your next trip

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Popular international destinations from Ontario
The most popular international flight routes departing from Ontario we’ve come across at this time.

Flights from Ontario to Guadalajara
Flights from Ontario to San Salvador

Related info for your journey

Access useful and relevant information related to your journey from Ontario. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated October 24, 2024.

  • What are the most popular destinations to fly to from Ontario?

    This month, the top selected destinations from Ontario are Dallas/Fort Worth Airport, Denver, Guadalajara. Throughout the year, Dallas/Fort Worth Airport, Denver, Guadalajara are some of the top choices made by users flying from Ontario.

  • What is the cheapest flight from Ontario to anywhere?

    Users have flown out of Ontario for as low as $17 to Sacramento (prices may vary depending on the airline and departure time). On average, users have booked flights for $461 to fly from Ontario.

  • What are the cheapest airlines flying from Ontario to anywhere?

    Over the past few days, we've found that Frontier, Breeze Airways, and Spirit Airlines have the cheapest prices from Ontario. Frontier flights from Ontario to Dallas Addison ($24), Breeze Airways flights from Ontario to Charleston ($30), and Spirit Airlines flights from Ontario to Albuquerque ($35).

  • What is the cheapest premium economy flight from Ontario?

    Options for some of the cheapest premium economy flights from Ontario we have found on Cheapflights are as follows:
    Fly from Ontario to Las Vegas starting at $73
    Fly from Ontario to Nashville starting at $358
    Fly from Ontario to Portland starting at $494
    Fly from Ontario to Seattle starting at $522

  • What is the cheapest first class flight from Ontario?

    If you’re looking for a cheap first-class flight from Ontario, consider Portland. Prices start at $456 so you can fly first-class even on a budget.

  • What is the cheapest month to fly from Ontario?

    September is currently the cheapest month to fly from Ontario. At this moment in time March is the most expensive month. These prices are determined by multiple factors and booking in advance can help keep costs down if your schedule is not as flexible.

  • Where are the cheapest places to fly to from Ontario?

    Check out the cheapest flights from Ontario to embark to:
    Fly from Ontario to Las Vegas from $36 round trip
    Fly from Ontario to San Francisco from $51 round trip
    Fly from Ontario to Sacramento from $57 round trip
    Fly from Ontario to Seattle from $62 round trip
    Fly from Ontario to Denver from $66 round trip

  • What is the shortest nonstop flight from Ontario?

    For shorter trips consider Phoenix, Prescott, and Tucson as potential places to explore. All can be options to fly to and are within 346 miles of Ontario.

  • What is the farthest nonstop flight from Ontario?

    If flights to distant destinations are more of your preference, check pricing for Singapore, Melbourne, and Sydney.

  • What parking options are available at Ontario International Airport (ONT)?

    There are a few parking options available at Ontario International Airport (ONT), including over five different lots that provide short and long-term parking. You can also opt for premium parking, which will put you closer to your terminal.

  • How can I go from downtown Ontario to Ontario International Airport (ONT)?

    If you drive from downtown Ontario to Ontario International Airport (ONT), it will take around 5 to 10 minutes. With public transportation, like bus line 61, it will take you around 30 to 35 minutes instead.

  • Is there a hotel located directly at Ontario International Airport (ONT)?

    Ontario International Airport (ONT) does not have its own on-site hotel, but there are quite a few that are just a short distance from the transportation hub. The DoubleTree by Hilton Hotel Ontario Airport has a free shuttle and is less than a 15-minute drive away.

  • Does Ontario International Airport (ONT) have any pet relief areas?

    Ontario International Airport (ONT) has pet relief areas that are both indoors and outdoors. Indoor areas can be found in Terminals 2 and 4, while outdoor areas are located at the far end of each terminal building.

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