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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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BHM
Jul 7 — Jul 141
Mon 7/7
Mon 7/14
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 July 2, 2025.

Round-trip from

$287
(American Airlines)

One-way from

$144
(American Airlines)

Popular in

November

Cheapest in

March

Average price

$416
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. 13% potential increase in price ($68 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 July 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 July 2, 2025.

This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/112:59 amONT - BHM
1 stop7h 42mAmerican Airlines
Sat 8/165:14 amBHM - ONT
1 stop8h 38mAmerican Airlines
Deal found 7/1$287
This Delta deal was found by Cheapflights users on 7/1. 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 7/2910:05 pmONT - BHM
1 stop8h 19mDelta
Thu 7/315:16 amBHM - ONT
2 stops8h 58mDelta
Deal found 7/1$357
This United Airlines deal was found by Cheapflights users on 7/1. 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 9/35:10 amONT - BHM
1 stop7h 00mUnited Airlines
Sat 9/63:35 pmBHM - ONT
1 stop7h 08mUnited Airlines
Deal found 7/1$377
This Southwest deal was found by Cheapflights users on 7/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2912:55 pmONT - BHM
2 stops8h 15mSouthwest
Mon 9/15:35 amBHM - ONT
2 stops8h 25mSouthwest
Deal found 7/1$423

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 July 2, 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

Fri 8/1

12:59 am-10:41 am

1 stop7h 42m

Birmingham

Sat 8/16

5:14 am-11:52 am

1 stop8h 38m

$287

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Tue 7/29

10:05 pm-8:24 am

1 stop8h 19m

Birmingham

Thu 7/31

5:16 am-12:14 pm

2 stops8h 58m

$357

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Wed 9/3

5:10 am-2:10 pm

1 stop7h 00m

Birmingham

Sat 9/6

3:35 pm-8:43 pm

1 stop7h 08m

$377

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Fri 8/29

12:55 pm-11:10 pm

2 stops8h 15m

Birmingham

Mon 9/1

5:35 am-12:00 pm

2 stops8h 25m

$423

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Fri 8/1

12:59 am-9:03 am

1 stop6h 04m

$144

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Tue 8/5

7:05 am-8:46 pm

2 stops11h 41m

$149

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Tue 7/29

6:00 am-4:22 pm

1 stop8h 22m

$189

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Wed 8/6

6:10 pm-8:59 am

2 stops12h 49m

$194

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Sun 8/17

7:15 am-5:40 pm

2 stops8h 25m

$200

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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 July 2, 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.

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 July 2, 2025.
Read through reviews of airlines operating flights from Ontario to Birmingham, such as Alaska Airlines, Southwest, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

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

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

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
4,272 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

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
7,983 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

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
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

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

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.1

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 $357, and United Airlines, from $377. These flights start at 36% 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 American Airlines. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $149 and $189, 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 July 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$286Average$476FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$336Average$557FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$339Average$416FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$341Average$443FlexibilityNo cancel feeOn-time63%

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