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$111+ Cheap flights from Connecticut to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/25. Fares are subject to change and may not be available on all flights or dates of travel.
BDL — ONT
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Connecticut to Ontario

Keep the following information in mind while searching for Connecticut to Ontario flight deals. Data was last updated June 12, 2025.

Round-trip from

$234
(Frontier)

One-way from

$111
(Trip.com)
From Connecticut to Ontario
Search Deals
One-way flight from Connecticut to Ontario
Search Deals

Find flight deals from Connecticut to Ontario

Cheapest flights from Connecticut to Ontario
Explore the most affordable flight options available from Connecticut to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Frontier deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/296:59 amJFK - ONT
1 stop12h 21mFrontier
Wed 8/67:22 pmONT - JFK
1 stop7h 08mFrontier
Deal found 6/12$234
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/296:30 amLGA - ONT
2 stops9h 10mSouthwest
Sun 8/318:00 amONT - LGA
2 stops9h 05mSouthwest
Deal found 6/11$249
This JetBlue deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/166:35 pmJFK - ONT
Nonstop5h 54mJetBlue
Tue 9/2310:56 pmONT - JFK
Nonstop5h 22mJetBlue
Deal found 6/12$257
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/163:00 pmJFK - ONT
1 stop10h 41mDelta
Mon 9/2210:59 pmONT - JFK
1 stop7h 46mDelta
Deal found 6/10$267
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/292:55 pmLGA - ONT
1 stop9h 43mAmerican Airlines
Wed 8/610:29 pmONT - LGA
1 stop7h 35mAmerican Airlines
Deal found 6/11$267
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/411:55 amEWR - ONT
1 stop8h 45mUnited Airlines
Mon 7/76:28 pmONT - EWR
1 stop8h 08mUnited Airlines
Deal found 6/10$267
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/235:29 amEWR - ONT
1 stop7h 32mAmerican Airlines
Wed 7/307:05 pmONT - EWR
2 stops11h 49mAmerican Airlines
Deal found 6/12$272
This CheapOair deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1210:59 pmLGA - ONT
1 stop27h 51mFrontier
Sun 9/146:11 pmONT - LGA
1 stop24h 55mFrontier
Deal found 6/10$274
This Trip.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/26:53 amEWR - ONT
1 stop14h 45mMultiple Airlines
Wed 7/97:00 amONT - EWR
1 stop20h 05mMultiple Airlines
Deal found 6/12$274
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/225:00 pmLGA - ONT
1 stop8h 27mDelta
Tue 7/2910:05 pmONT - LGA
1 stop8h 41mDelta
Deal found 6/11$277
This Alaska Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/167:19 amEWR - ONT
1 stop9h 50mAlaska Airlines
Tue 9/233:04 pmONT - EWR
1 stop11h 55mAlaska Airlines
Deal found 6/10$277
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/201:15 pmEWR - ONT
1 stop9h 27mDelta
Wed 9/2412:00 pmONT - EWR
1 stop8h 00mDelta
Deal found 6/10$282

Cheapflights Fare Finder

Customize your flight search to find flights from Connecticut to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Connecticut to Ontario that are best for you.

Fly from

Connecticut

Fly to

Ontario

Route

Depart

Return

Price

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Tue 7/29

6:59 am-4:20 pm

1 stop12h 21m

Ontario

Wed 8/6

7:22 pm-5:30 am

1 stop7h 08m

$234

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Fri 8/29

6:30 am-12:40 pm

2 stops9h 10m

Ontario

Sun 8/31

8:00 am-8:05 pm

2 stops9h 05m

$249

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Tue 9/16

6:35 pm-9:29 pm

Nonstop5h 54m

Ontario

Tue 9/23

10:56 pm-7:18 am

Nonstop5h 22m

$257

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Tue 7/29

2:55 pm-9:38 pm

1 stop9h 43m

Ontario

Wed 8/6

10:29 pm-9:04 am

1 stop7h 35m

$267

NewarkOntario

EWR - ONT

EWRONT

Newark

Fri 7/4

11:55 am-5:40 pm

1 stop8h 45m

Ontario

Mon 7/7

6:28 pm-5:36 am

1 stop8h 08m

$267

NewarkOntario

EWR - ONT

EWRONT

Newark

Wed 7/23

5:29 am-10:01 am

1 stop7h 32m

Ontario

Wed 7/30

7:05 pm-9:54 am

2 stops11h 49m

$272

NewarkOntario

EWR - ONT

EWRONT

Newark

Wed 7/2

6:53 am-6:38 pm

1 stop14h 45m

Ontario

Wed 7/9

7:00 am-6:05 am

1 stop20h 05m

$274

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Fri 9/12

10:59 pm-11:50 pm

1 stop27h 51m

Ontario

Sun 9/14

6:11 pm-10:06 pm

1 stop24h 55m

$274

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Tue 9/16

6:00 am-11:24 am

1 stop8h 24m

Ontario

Tue 9/23

10:59 pm-11:13 am

1 stop9h 14m

$277

NewarkOntario

EWR - ONT

EWRONT

Newark

Tue 9/16

7:19 am-2:09 pm

1 stop9h 50m

Ontario

Tue 9/23

3:04 pm-5:59 am

1 stop11h 55m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 55 results
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Best time to book a flight from Connecticut to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Connecticut 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.

Cheapflights Insights

Everything you need to know about your flight from Connecticut to Ontario

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

Currently, August is the cheapest month in which you can book a flight from Connecticut to Ontario (average of $246). Flying from Connecticut to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CT to ONT?

Find hourly flight availability from Connecticut to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

When flying from Connecticut to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated June 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Connecticut to Ontario to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Connecticut to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Connecticut?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Ontario from Connecticut.

  • What are the cheapest airlines to fly from Connecticut to Ontario one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $124. However, be on the lookout for offers from Hawaiian Airlines and Alaska Airlines, as they are both options that can get you from Connecticut to Ontario for a low price.

  • What are the most popular routes from Connecticut to Ontario?

    Most travelers choose New York John F Kennedy Intl - Ontario, Newark - Ontario or New York LaGuardia - Ontario when deciding on the best route from Connecticut to Ontario.

  • Can I find deals for flights from Connecticut to Ontario that include hotel bookings?

    Yes. In addition to deals on Connecticut to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Connecticut to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Connecticut to Ontario.

  • Can I find deals for business class flights from Connecticut to Ontario?

    Yes. Cheapflights offers flight deals from Connecticut to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, August is the cheapest month in which you can book a flight from Connecticut to Ontario (average of $246). Flying from Connecticut to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Connecticut to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Connecticut to Ontario

Discover the top 4 airlines that operate flights from Connecticut to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$306Average$529FlexibilityNo cancel feeOn-time71%
DeltaCheapest$306Average$496FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$332Average$493FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$380Average$516FlexibilityNo cancel feeOn-time69%

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