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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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
BHM — ONT
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$287
(Delta)

One-way from

$144
(Southwest)

Popular in

October

Cheapest in

November

Average price

$404
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 June 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 June 12, 2025.

This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/51:14 pmBHM - ONT
1 stop8h 06mDelta
Sat 8/307:05 amONT - BHM
1 stop9h 06mDelta
Deal found 6/9$287
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.
Thu 8/73:34 pmBHM - ONT
1 stop8h 40mAmerican Airlines
Mon 8/1111:59 pmONT - BHM
1 stop6h 59mAmerican Airlines
Deal found 6/11$297
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/13:30 pmBHM - ONT
1 stop6h 47mUnited Airlines
Sat 11/81:00 pmONT - BHM
1 stop6h 20mUnited Airlines
Deal found 6/10$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.
Wed 6/182:00 pmBHM - ONT
2 stops9h 00mSouthwest
Tue 6/2411:35 amONT - BHM
2 stops9h 40mSouthwest
Deal found 6/10$628
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 9/1910:57 amBHM - ONT
2 stops15h 02mAlaska Airlines
Sun 9/217:22 pmONT - BHM
2 stops13h 05mAlaska Airlines
Deal found 6/9$677

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 June 12, 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 8/5

1:14 pm-7:20 pm

1 stop8h 06m

Ontario

Sat 8/30

7:05 am-6:11 pm

1 stop9h 06m

$287

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Thu 8/7

3:34 pm-10:14 pm

1 stop8h 40m

Ontario

Mon 8/11

11:59 pm-8:58 am

1 stop6h 59m

$297

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Mon 9/8

4:55 pm-9:25 pm

1 stop6h 30m

Ontario

Sat 9/13

1:15 pm-9:17 pm

1 stop6h 02m

$382

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Wed 6/18

2:00 pm-9:00 pm

2 stops9h 00m

Ontario

Tue 6/24

11:35 am-11:15 pm

2 stops9h 40m

$628

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Fri 8/1

1:40 pm-11:59 pm

2 stops12h 19m

Ontario

Mon 8/4

6:58 pm-10:41 am

2 stops13h 43m

$747

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Mon 6/30

4:25 pm-9:10 pm

1 stop6h 45m

$144

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Tue 8/12

7:00 am-4:24 pm

2 stops11h 24m

$148

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Thu 8/7

4:15 pm-11:42 pm

2 stops9h 27m

$154

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Thu 8/28

7:30 am-5:37 pm

2 stops12h 07m

$170

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Thu 7/31

1:40 pm-12:13 am

2 stops12h 33m

$329

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 June 12, 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.

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 June 12, 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
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 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 American Airlines, from $332, and United Airlines, from $377. 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 Southwest. Other airlines that offer cheap prices include American Airlines from $148 and Delta from $154 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$286Average$416FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$336Average$445FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$356Average$417FlexibilityNo cancel feeOn-time63%

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