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Ontario

$363+ Cheap flights from Burlington to Ontario (BTV - ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
BTV — ONT
Jul 3 — Jul 101
Fri 7/3
Fri 7/10
1 adult, Economy
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Cheap flight deals from Burlington to Ontario

Cheapest flights from Burlington to Ontario
Explore the most affordable flight options available from Burlington to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 3, 2026.

This Delta deal was found by Cheapflights users on 6/3. 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.
Thu 9/35:14 am
BTV
-
ONT
1 stop8h 28m
Delta
Tue 9/812:00 pm
ONT
-
BTV
1 stop8h 48m
Delta
Deal found 6/3$363
This Delta deal was found by Cheapflights users on 6/1. 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.
Thu 7/305:25 am
BTV
-
ONT
1 stop8h 13m
Delta
Sun 8/3012:00 pm
ONT
-
BTV
1 stop8h 57m
Delta
Deal found 6/1$394
This United Airlines deal was found by Cheapflights users on 6/1. 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.
Thu 10/224:48 pm
BTV
-
ONT
1 stop8h 38m
United Airlines
Tue 10/275:00 am
ONT
-
BTV
1 stop7h 25m
United Airlines
Deal found 6/1$473
This United Airlines deal was found by Cheapflights users on 5/30. 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.
Thu 10/293:50 pm
BTV
-
ONT
1 stop7h 30m
United Airlines
Tue 11/35:00 am
ONT
-
BTV
1 stop7h 25m
United Airlines
Deal found 5/30$513
This United Airlines deal was found by Cheapflights users on 6/2. 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.
Thu 10/14:48 pm
BTV
-
ONT
1 stop8h 38m
United Airlines
Tue 10/65:00 am
ONT
-
BTV
1 stop7h 34m
United Airlines
Deal found 6/2$519
This United Airlines deal was found by Cheapflights users on 5/31. 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.
Thu 8/274:47 pm
BTV
-
ONT
1 stop8h 48m
United Airlines
Mon 8/315:00 am
ONT
-
BTV
1 stop7h 31m
United Airlines
Deal found 5/31$568
This Delta deal was found by Cheapflights users on 6/1. 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 7/285:25 am
BTV
-
ONT
1 stop8h 13m
Delta
Sun 8/3012:00 pm
ONT
-
BTV
1 stop8h 57m
Delta
Deal found 6/1$584
This Delta deal was found by Cheapflights users on 6/1. 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.
Fri 7/315:25 am
BTV
-
ONT
1 stop8h 13m
Delta
Sun 8/3012:00 pm
ONT
-
BTV
1 stop8h 57m
Delta
Deal found 6/1$608
This United Airlines deal was found by Cheapflights users on 5/30. 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.
Mon 6/13:23 pm
BTV
-
ONT
1 stop8h 23m
United Airlines
Sat 6/136:39 pm
ONT
-
BTV
2 stops12h 40m
United Airlines
Deal found 5/30$631
This United Airlines deal was found by Cheapflights users on 6/1. 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.
Wed 7/14:57 pm
BTV
-
ONT
1 stop8h 54m
United Airlines
Tue 7/75:00 am
ONT
-
BTV
1 stop7h 36m
United Airlines
Deal found 6/1$638
This Delta deal was found by Cheapflights users on 6/1. 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.
Thu 7/305:25 am
BTV
-
ONT
1 stop8h 13m
Delta
Sat 8/297:05 am
ONT
-
BTV
1 stop12h 26m
Delta
Deal found 6/1$643

Find flight deals from Burlington to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Burlington (BTV) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$394
(Delta)

One-way from

$374
(Delta)

Popular in

March

Cheapest in

June

Average price

$408
Provider with most accurate pricing for Burlington-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Burlington-Ontario flights.
Search Deals
From Burlington to Ontario
Search Deals
One-way flight from Burlington to Ontario
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($62 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Burlington 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 3, 2026.
Use the filters below to find and compare flights from Burlington to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BurlingtonOntario

BTV - ONT

BTVONT

Burlington

Thu 7/30

5:25 am-10:38 am

1 stop8h 13m

Ontario

Sun 8/30

12:00 pm-11:57 pm

1 stop8h 57m

$394
Quickest round-trip

BurlingtonOntario

BTV - ONT

BTVONT

Burlington

Thu 10/29

3:50 pm-8:20 pm

1 stop7h 30m

Ontario

Tue 11/3

5:00 am-3:25 pm

1 stop7h 25m

$513

BurlingtonOntario

BTV - ONT

BTVONT

Burlington

Thu 8/27

4:47 pm-10:35 pm

1 stop8h 48m

Ontario

Mon 8/31

5:00 am-3:31 pm

1 stop7h 31m

$568

BurlingtonOntario

BTV - ONT

BTVONT

Burlington

Wed 7/1

4:57 pm-10:51 pm

1 stop8h 54m

Ontario

Tue 7/7

5:00 am-3:36 pm

1 stop7h 36m

$638

BurlingtonOntario

BTV - ONT

BTVONT

Burlington

Tue 7/21

5:25 am-10:38 am

1 stop8h 13m

Ontario

Tue 8/4

12:00 pm-11:57 pm

1 stop8h 57m

$698

BurlingtonOntario

BTV - ONT

BTVONT

Burlington

Sat 6/13

4:47 pm-10:51 pm

1 stop9h 04m

Ontario

Sat 6/20

5:00 am-3:36 pm

1 stop7h 36m

$722

BurlingtonOntario

BTV - ONT

BTVONT

Burlington

Sat 6/13

3:30 pm-9:55 pm

1 stop9h 25m

Ontario

Wed 6/17

5:00 am-3:36 pm

1 stop7h 36m

$722

BurlingtonOntario

BTV - ONT

BTVONT

Burlington

Wed 6/17

3:23 pm-8:46 pm

1 stop8h 23m

Ontario

Sun 6/21

5:00 am-3:36 pm

1 stop7h 36m

$739

BurlingtonOntario

BTV - ONT

BTVONT

Burlington

Tue 6/16

4:47 pm-10:51 pm

1 stop9h 04m

Ontario

Sat 6/20

5:00 am-3:36 pm

1 stop7h 36m

$857

BurlingtonOntario

BTV - ONT

BTVONT

Burlington

Mon 6/22

4:47 pm-10:51 pm

1 stop9h 04m

Ontario

Fri 6/26

6:10 am-2:17 pm

1 stop29h 07m

$871

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/31

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Compare providers for flights from Burlington to 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 Burlington to Ontario in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*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: When it comes to deals on Burlington-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Burlington-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Burlington-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Burlington-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Burlington-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Burlington to Ontario

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

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 3, 2026.
Peruse reviews from past customers who have flown with United Airlines from Burlington to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,771 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,771 reviews
United Airlines
7.4
Good
9,771 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

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

  • How long is the flight from Burlington to Ontario?

    A quick flight from Burlington to Ontario can take about 8h 13m. Delta provides one of the quickest options available for as low as $394. The distance from Burlington to Ontario is about 2449 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Burlington to Ontario round-trip?

    United Airlines, at $356, was found to be the cheapest airline from Burlington to Ontario.. United Airlines is priced at 32% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Burlington 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Burlington to Ontario

Discover the top airline that operate flights from Burlington 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 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$356Average$536FlexibilityNo cancel feeOn-time69%

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