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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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
BHM — ONT
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$287
(Delta)

One-way from

$144
(Delta)

Popular in

October

Cheapest in

November

Average price

$512
From Birmingham to Ontario
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One-way flight from Birmingham to Ontario
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High demand for flights, 3% 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 July 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 July 3, 2025.

This Delta deal was found by Cheapflights users on 7/3. 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.
Tue 8/196:30 amBHM - ONT
1 stop6h 05mDelta
Wed 8/207:05 amONT - BHM
1 stop7h 26mDelta
Deal found 7/3$287
This American Airlines deal was found by Cheapflights users on 7/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/52:11 pmBHM - ONT
1 stop9h 13mAmerican Airlines
Mon 9/810:35 pmONT - BHM
1 stop8h 54mAmerican Airlines
Deal found 7/3$360
This United Airlines deal was found by Cheapflights users on 7/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/293:35 pmBHM - ONT
1 stop7h 19mUnited Airlines
Sat 8/26:00 amONT - BHM
1 stop8h 25mUnited Airlines
Deal found 7/3$377
This Southwest deal was found by Cheapflights users on 6/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/242:45 pmBHM - ONT
2 stops10h 55mSouthwest
Sun 10/267:30 amONT - BHM
2 stops9h 45mSouthwest
Deal found 6/30$413

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 July 3, 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

Tue 8/19

6:30 am-10:35 am

1 stop6h 05m

Ontario

Wed 8/20

7:05 am-4:31 pm

1 stop7h 26m

$287

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Fri 9/5

2:11 pm-9:24 pm

1 stop9h 13m

Ontario

Mon 9/8

10:35 pm-9:29 am

1 stop8h 54m

$360

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Tue 7/29

3:35 pm-8:54 pm

1 stop7h 19m

Ontario

Sat 8/2

6:00 am-4:25 pm

1 stop8h 25m

$377

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Fri 10/24

2:45 pm-11:40 pm

2 stops10h 55m

Ontario

Sun 10/26

7:30 am-7:15 pm

2 stops9h 45m

$413

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Wed 8/6

6:19 am-10:40 am

1 stop6h 21m

$144

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Mon 8/18

7:00 am-4:24 pm

2 stops11h 24m

$168

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Thu 11/20

1:30 pm-6:40 pm

1 stop7h 10m

$180

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Wed 8/6

3:35 pm-8:54 pm

1 stop7h 19m

$189

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Thu 7/24

1:40 pm-11:59 pm

2 stops12h 19m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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 July 3, 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.

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 July 3, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta from Birmingham 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

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

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

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
4,266 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

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
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

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

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

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

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

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 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 Southwest, from $343, and American Airlines, from $371. Users have found that Delta is 35% 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 American Airlines from $168 and Southwest from $180 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 2 airlines flying from Birmingham to Ontario

Discover the top 2 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$336Average$460FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$356Average$454FlexibilityNo cancel feeOn-time63%

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