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$149+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
BHM — ONT
dic. 6 — dic. 131
sáb. 12/6
sáb. 12/13
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 noviembre 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$307
(American Airlines)

One-way from

$149
(Southwest)

Popular in

August

Cheapest in

September

Average price

$468
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, 5% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in November 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 noviembre 6, 2025.

This American Airlines deal was found by Cheapflights users on 11/6. 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.
sáb. 12/65:59 pmBHM - ONT
1 stop6h 29mAmerican Airlines
sáb. 12/1310:47 amONT - BHM
1 stop7h 45mAmerican Airlines
Deal found 11/6$307
This United Airlines deal was found by Cheapflights users on 11/5. 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.
mié. 12/33:03 pmBHM - ONT
1 stop8h 46mUnited Airlines
lun. 12/86:00 amONT - BHM
1 stop8h 19mUnited Airlines
Deal found 11/5$385
This United Airlines deal was found by Cheapflights users on 11/6. 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.
sáb. 12/61:45 pmBHM - ONT
2 stops11h 04mUnited Airlines
sáb. 12/131:34 pmONT - BHM
1 stop5h 58mUnited Airlines
Deal found 11/6$403
This Southwest deal was found by Cheapflights users on 11/5. 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.
mié. 12/311:20 amBHM - ONT
2 stops9h 10mSouthwest
lun. 12/86:50 amONT - BHM
1 stop7h 25mSouthwest
Deal found 11/5$404
This American Airlines deal was found by Cheapflights users on 11/5. 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.
mié. 12/36:57 amBHM - ONT
2 stops11h 05mAmerican Airlines
lun. 12/89:59 amONT - BHM
2 stops10h 56mAmerican Airlines
Deal found 11/5$409
This United Airlines deal was found by Cheapflights users on 11/5. 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.
lun. 12/83:03 pmBHM - ONT
1 stop8h 46mUnited Airlines
mié. 12/101:34 pmONT - BHM
1 stop5h 58mUnited Airlines
Deal found 11/5$433
This Southwest deal was found by Cheapflights users on 11/5. 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.
jue. 12/1812:40 pmBHM - ONT
2 stops9h 00mSouthwest
sáb. 12/274:30 pmONT - BHM
1 stop6h 25mSouthwest
Deal found 11/5$443
This KAYAK deal was found by Cheapflights users on 11/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/161:37 pmBHM - ONT
1 stop8h 02mAmerican Airlines
jue. 12/187:10 amONT - BHM
1 stop8h 03mAmerican Airlines
Deal found 11/6$460
This American Airlines deal was found by Cheapflights users on 11/5. 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.
mar. 12/307:15 pmBHM - ONT
1 stop6h 31mAmerican Airlines
jue. 1/110:40 pmONT - BHM
1 stop7h 06mAmerican Airlines
Deal found 11/5$464
This Delta deal was found by Cheapflights users on 11/6. 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.
jue. 11/205:15 amBHM - ONT
1 stop7h 51mDelta
jue. 12/410:25 pmONT - BHM
1 stop7h 36mDelta
Deal found 11/6$468
This American Airlines deal was found by Cheapflights users on 11/5. 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.
jue. 11/207:30 amBHM - ONT
1 stop6h 23mAmerican Airlines
jue. 12/46:17 amONT - BHM
2 stops9h 03mAmerican Airlines
Deal found 11/5$473

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 noviembre 6, 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

jue. 1/15

3:20 pm-9:20 pm

1 stop8h 00m

Ontario

mar. 1/20

6:05 am-3:35 pm

1 stop7h 30m

$365

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

mié. 12/3

3:03 pm-9:49 pm

1 stop8h 46m

Ontario

lun. 12/8

6:00 am-4:19 pm

1 stop8h 19m

$385

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

mié. 1/14

8:00 am-12:47 pm

1 stop6h 47m

Ontario

mar. 1/20

6:00 am-2:05 pm

1 stop6h 05m

$397

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

sáb. 12/6

1:45 pm-10:49 pm

2 stops11h 04m

Ontario

sáb. 12/13

1:34 pm-9:32 pm

1 stop5h 58m

$403

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

mié. 12/3

11:20 am-6:30 pm

2 stops9h 10m

Ontario

lun. 12/8

6:50 am-4:15 pm

1 stop7h 25m

$404

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

lun. 12/8

3:03 pm-9:49 pm

1 stop8h 46m

Ontario

mié. 12/10

1:34 pm-9:32 pm

1 stop5h 58m

$433

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

mar. 12/16

1:37 pm-7:39 pm

1 stop8h 02m

Ontario

jue. 12/18

7:10 am-5:13 pm

1 stop8h 03m

$460

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

jue. 1/15

4:53 pm-9:58 pm

1 stop7h 05m

Ontario

mar. 1/20

5:05 am-8:17 pm

2 stops13h 12m

$460

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

jue. 11/20

7:30 am-11:53 am

1 stop6h 23m

Ontario

jue. 12/4

6:17 am-5:20 pm

2 stops9h 03m

$473

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

jue. 12/18

12:40 pm-7:40 pm

2 stops9h 00m

Ontario

sáb. 12/27

5:40 am-5:45 pm

2 stops10h 05m

$479

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 19 results
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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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Birmingham, Alabama-Ontario flight deals on Cheapflights vs. eDreams >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 $134). Flying from Birmingham, Alabama to Ontario in January is currently the most expensive (average of $288). 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 noviembre 6, 2025.

It’s typically best to fly out from Birmingham, Alabama to Ontario in the afternoon. Doing so could potentially save you 4% 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 noviembre 6, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and American Airlines 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.
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
7.9
Good
8,001 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
11,040 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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.

  • How long is the flight from Birmingham, Alabama to Ontario?

    Airlines like Southwest and United Airlines fly from Birmingham, Alabama to Ontario in about 8h. The time it takes to get you to your destination can typically vary by up to 46m. The distance between Birmingham, Alabama and Ontario is about 1763 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $286. Other airlines that can offer you cheap pricing are American Airlines, from $361, and Southwest, from $366. Users have found that Delta is 34% cheaper than the other options available to this destination.

  • 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 $134). Flying from Birmingham, Alabama to Ontario in January is currently the most expensive (average of $288). 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.

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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 noviembre 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$286Average$402FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$361Average$420FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$366Average$468FlexibilityNo cancel feeOn-time63%

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