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$144+ Cheap flights from Ontario to Birmingham, AL (ONT - BHM)

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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BHM
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Ontario to Birmingham

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Birmingham (BHM). 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 12, 2025.

Round-trip from

$287
(American Airlines)

One-way from

$144
(Delta)

Popular in

November

Cheapest in

March

Average price

$486
From Ontario to Birmingham
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One-way flight from Ontario to Birmingham
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Highest demand for flights based on searches. 12% potential increase in price ($66 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Ontario to Birmingham

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

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.
Wed 8/2711:59 pmONT - BHM
1 stop7h 00mAmerican Airlines
Sat 8/305:14 amBHM - ONT
1 stop8h 38mAmerican Airlines
Deal found 6/11$287
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.
Thu 8/147:05 amONT - BHM
1 stop9h 06mDelta
Sun 8/175:36 pmBHM - ONT
1 stop6h 44mDelta
Deal found 6/10$332
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/171:15 pmONT - BHM
1 stop6h 02mUnited Airlines
Tue 9/301:40 pmBHM - ONT
1 stop10h 50mUnited Airlines
Deal found 6/12$377
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/19:00 amONT - BHM
1 stop7h 20mSouthwest
Wed 7/95:45 amBHM - ONT
2 stops8h 40mSouthwest
Deal found 6/10$408
This Alaska Airlines deal was found by Cheapflights users on 6/9. 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.
Fri 10/177:25 pmONT - BHM
2 stops14h 20mAlaska Airlines
Sun 10/195:08 amBHM - ONT
2 stops15h 22mAlaska Airlines
Deal found 6/9$627

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Birmingham 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 Ontario to Birmingham that are best for you.

Fly from

Ontario

Fly to

Birmingham

Route

Depart

Return

Price

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Wed 8/27

11:59 pm-8:59 am

1 stop7h 00m

Birmingham

Sat 8/30

5:14 am-11:52 am

1 stop8h 38m

$287

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Thu 8/14

7:05 am-6:11 pm

1 stop9h 06m

Birmingham

Sun 8/17

5:36 pm-10:20 pm

1 stop6h 44m

$332

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Wed 9/17

1:15 pm-9:17 pm

1 stop6h 02m

Birmingham

Tue 9/30

1:40 pm-10:30 pm

1 stop10h 50m

$377

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Tue 7/1

9:00 am-6:20 pm

1 stop7h 20m

Birmingham

Wed 7/9

5:45 am-12:25 pm

2 stops8h 40m

$408

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Fri 10/17

7:25 pm-11:45 am

2 stops14h 20m

Birmingham

Sun 10/19

5:08 am-6:30 pm

2 stops15h 22m

$627

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Sat 8/23

7:05 am-6:11 pm

1 stop9h 06m

$144

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Sat 8/23

5:10 am-7:54 pm

2 stops12h 44m

$149

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Thu 8/7

12:47 pm-11:40 pm

2 stops8h 53m

$154

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Sat 12/6

6:15 am-4:25 pm

1 stop8h 10m

$158

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Wed 8/20

5:49 pm-8:59 am

2 stops13h 10m

$194

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Best time to book a flight from Ontario to Birmingham

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

Cheapflights Insights

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

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

Currently, October is the cheapest month in which you can book a flight from Ontario to Birmingham, Alabama (average of $376). Flying from Ontario to Birmingham, Alabama in March is currently the most expensive (average of $457). 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 ONT to BHM?

Find hourly flight availability from Ontario to Birmingham. 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.

It’s typically best to fly out from Ontario to Birmingham, Alabama at noon. Doing so could potentially save you 17% on the flight price compared to flying in the morning, which is usually more expensive.

Rainfall in Birmingham by month

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

In terms of precipitation, rainfall in Birmingham, Alabama ranges from 3.4 - 5.2 inches per month. March is typically the wettest month, when rainfall can reach 5.2 in. October is typically the driest time to visit Birmingham, Alabama when rainfall is around 3.4 in.

Temperature in Birmingham by month

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

If weather is an important factor for your trip to Birmingham, Alabama, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 44.6 F).

Reviews of airlines servicing Birmingham

Get insights into the airlines that provide service to Birmingham. 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 Birmingham. Reviews last updated June 12, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Ontario to Birmingham 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
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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 Ontario to Birmingham. 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 Ontario to Birmingham, Alabama round-trip?

    Cheapflights users have booked flights from Ontario to Birmingham, Alabama round-trip from $287. Other airlines that can offer you cheap pricing are Delta, from $332, and United Airlines, from $377. These flights start at 37% lower than the current average price 3 months from now.

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

    $144 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $149 and $154, respectively.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Ontario to Birmingham, Alabama (average of $376). Flying from Ontario to Birmingham, Alabama in March is currently the most expensive (average of $457). 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

Traveling to a place near Ontario?

Book flights to Ontario if you plan to visit one of these locations
Homewood
Hoover

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Top 4 airlines flying from Ontario to Birmingham

Discover the top 4 airlines that operate flights from Ontario to Birmingham. 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
United AirlinesCheapest$336Average$445FlexibilityNo cancel feeOn-time69%
DeltaCheapest$337Average$476FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$339Average$416FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$341Average$443FlexibilityNo cancel feeOn-time63%

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