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$144+ Cheap flights from Birmingham, AL to Ontario (BHM - 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
BHM — ONT
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
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Cheap flight deals from Birmingham to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Birmingham (BHM) 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 April 15, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$287
(Delta)

One-way from

$144
(Delta)

Popular in

October

Cheapest in

November

Average price

$460
Provider with most accurate pricing for Birmingham-Ontario flight deals.
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Provider most trusted by Cheapflights users for Birmingham-Ontario flights.
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From Birmingham to Ontario
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One-way flight from Birmingham to Ontario
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Birmingham to Ontario

Cheapest flights from Birmingham to Ontario
Explore the most affordable flight options available from Birmingham to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 15, 2025.

This Delta deal was found by Cheapflights users on 4/14. 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 5/105:15 amBHM - ONT
1 stop7h 53mDelta
Sat 5/177:05 amONT - BHM
1 stop5h 43mDelta
Deal found 4/14$287
This United Airlines deal was found by Cheapflights users on 4/14. 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.
Sat 5/108:00 amBHM - ONT
2 stops14h 34mUnited Airlines
Sat 5/175:05 amONT - BHM
2 stops13h 37mUnited Airlines
Deal found 4/14$323
This American Airlines deal was found by Cheapflights users on 4/14. 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.
Sun 5/257:15 pmBHM - ONT
1 stop6h 28mAmerican Airlines
Tue 6/311:59 pmONT - BHM
1 stop6h 54mAmerican Airlines
Deal found 4/14$381
This Southwest deal was found by Cheapflights users on 4/14. 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.
Thu 11/610:05 amBHM - ONT
2 stops9h 55mSouthwest
Sun 11/94:15 pmONT - BHM
1 stop6h 35mSouthwest
Deal found 4/14$422
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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.
Thu 5/2210:57 amBHM - ONT
2 stops13h 49mAlaska Airlines
Tue 5/277:20 pmONT - BHM
2 stops13h 07mAlaska Airlines
Deal found 4/14$890

Cheapflights Fare Finder

Customize your flight search to find flights from Birmingham 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 April 15, 2025.
Use the filters below to find and compare flights from Birmingham to Ontario that are best for you.

Fly from

Birmingham

Fly to

Ontario

Route

Depart

Return

Price

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Sat 5/10

5:15 am-11:08 am

1 stop7h 53m

Ontario

Sat 5/17

7:05 am-2:48 pm

1 stop5h 43m

$287

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Sat 5/10

8:00 am-8:34 pm

2 stops14h 34m

Ontario

Sat 5/17

5:05 am-8:42 pm

2 stops13h 37m

$323

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Sun 5/25

7:15 pm-11:43 pm

1 stop6h 28m

Ontario

Tue 6/3

11:59 pm-8:53 am

1 stop6h 54m

$381

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Thu 5/22

10:57 am-10:46 pm

2 stops13h 49m

Ontario

Tue 5/27

7:20 pm-10:27 am

2 stops13h 07m

$890

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Sat 5/10

5:15 am-11:08 am

1 stop7h 53m

$144

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Fri 7/4

9:45 am-6:35 pm

1 stop10h 50m

$180

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Sat 6/28

5:05 pm-9:37 pm

1 stop6h 32m

$189

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Tue 5/6

6:30 am-8:29 pm

2 stops15h 59m

$194

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Sat 5/24

8:23 am-6:23 pm

2 stops12h 00m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/13

Compare providers for flights from Birmingham 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 Birmingham to Ontario in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 Birmingham, Alabama-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Birmingham, Alabama-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Birmingham, Alabama-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Birmingham, Alabama-Ontario flights, Cheapflights users trust eDreams the most. eDreams 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 Birmingham, Alabama-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 Birmingham to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Birmingham, Alabama to Ontario (average of $246). Flying from Birmingham, Alabama 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 BHM to ONT?

Find hourly flight availability from Birmingham 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 April 15, 2025.

It’s typically best to fly out from Birmingham, Alabama to Ontario in the afternoon. Doing so could potentially save you 5% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from Birmingham, Alabama to Ontario?

Use this chart to determine the cheapest time to fly round-trip from Birmingham to Ontario. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Birmingham, Alabama to Ontario flight should consider departing on Tuesday mornings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 April 15, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Birmingham to Ontario have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,871 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,279 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,916 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,656 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

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

  • What are the cheapest airlines flying from Birmingham, Alabama to Ontario round-trip?

    Cheapflights users have booked flights from Birmingham, Alabama to Ontario round-trip from $287. Other airlines that can offer you cheap pricing are United Airlines, from $323, and American Airlines, from $342. Users have found that Delta is 36% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Birmingham, Alabama to Ontario one-way?

    One-way options have recently been found by users for as low as $144 on Delta. Other airlines that offer cheap prices include Southwest from $180 and United Airlines from $189 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Birmingham 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 Birmingham, Alabama to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Birmingham, Alabama to Ontario (average of $246). Flying from Birmingham, Alabama 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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Top 3 airlines flying from Birmingham to Ontario

Discover the top 3 airlines that operate flights from Birmingham 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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$337Average$477FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$356Average$454FlexibilityNo cancel feeOn-time63%
DeltaCheapest$376Average$431FlexibilityNo cancel feeOn-timeN/A

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