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Ontario

$139+ 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
BHM — ONT
May 23 — May 301
Sat 5/23
Sat 5/30
1 adult, Economy
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Cheap 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 April 23, 2026.

This American Airlines deal was found by Cheapflights users on 4/21. 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 5/276:31 am
BHM
-
ONT
1 stop7h 19m
American Airlines
Tue 6/910:00 pm
ONT
-
BHM
1 stop7h 40m
American Airlines
Deal found 4/21$302
This Delta deal was found by Cheapflights users on 4/21. 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 5/265:20 pm
BHM
-
ONT
1 stop6h 28m
Delta
Wed 6/1010:00 pm
ONT
-
BHM
1 stop8h 21m
Delta
Deal found 4/21$338
This American Airlines deal was found by Cheapflights users on 4/20. 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 5/276:31 am
BHM
-
ONT
1 stop8h 57m
American Airlines
Fri 6/510:00 pm
ONT
-
BHM
1 stop7h 40m
American Airlines
Deal found 4/20$348
This Southwest deal was found by Cheapflights users on 4/20. 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 5/276:20 am
BHM
-
ONT
1 stop9h 10m
Southwest
Tue 6/910:10 am
ONT
-
BHM
2 stops11h 25m
Southwest
Deal found 4/20$354
This Delta deal was found by Cheapflights users on 4/21. 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 9/2910:42 am
BHM
-
ONT
1 stop9h 19m
Delta
Sun 10/410:59 pm
ONT
-
BHM
1 stop7h 19m
Delta
Deal found 4/21$367
This Delta deal was found by Cheapflights users on 4/18. 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.
Sat 5/95:15 am
BHM
-
ONT
1 stop7h 42m
Delta
Sat 5/1610:00 pm
ONT
-
BHM
1 stop8h 27m
Delta
Deal found 4/18$373
This Delta deal was found by Cheapflights users on 4/20. 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.
Wed 5/275:20 pm
BHM
-
ONT
1 stop6h 28m
Delta
Tue 6/910:00 pm
ONT
-
BHM
1 stop8h 21m
Delta
Deal found 4/20$397
This Delta deal was found by Cheapflights users on 4/21. 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 5/265:20 pm
BHM
-
ONT
1 stop6h 28m
Delta
Tue 6/910:00 pm
ONT
-
BHM
1 stop8h 21m
Delta
Deal found 4/21$399
This Southwest deal was found by Cheapflights users on 4/20. 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 5/276:20 am
BHM
-
ONT
1 stop9h 10m
Southwest
Fri 6/52:30 pm
ONT
-
BHM
2 stops7h 15m
Southwest
Deal found 4/20$427
This United Airlines deal was found by Cheapflights users on 4/20. 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 5/124:55 pm
BHM
-
ONT
1 stop7h 03m
United Airlines
Wed 5/135:00 am
ONT
-
BHM
1 stop7h 56m
United Airlines
Deal found 4/20$429

Find 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 April 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$302
(American Airlines)

One-way from

$139
(Delta)

Popular in

March

Cheapest in

October

Average price

$508
Provider with most accurate pricing for Birmingham-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Birmingham-Ontario flights.
Search Deals
From Birmingham to Ontario
Search Deals
One-way flight from Birmingham to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($35 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 23, 2026.
Use the filters below to find and compare flights from Birmingham to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Tue 5/26

5:20 pm-9:48 pm

1 stop6h 28m

Ontario

Wed 6/10

10:00 pm-8:21 am

1 stop8h 21m

$338

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Sat 5/9

5:15 am-10:57 am

1 stop7h 42m

Ontario

Sat 5/16

10:00 pm-8:27 am

1 stop8h 27m

$373

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Wed 5/27

3:40 pm-10:15 pm

2 stops8h 35m

Ontario

Tue 6/9

10:10 am-11:35 pm

2 stops11h 25m

$374

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Tue 5/12

3:00 pm-9:58 pm

1 stop8h 58m

Ontario

Wed 5/13

5:00 am-2:56 pm

1 stop7h 56m

$447

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Thu 5/28

5:19 pm-9:48 pm

1 stop6h 29m

Ontario

Wed 6/10

10:00 pm-8:21 am

1 stop8h 21m

$487

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Tue 5/26

5:20 pm-9:48 pm

1 stop6h 28m

Ontario

Mon 6/8

10:00 pm-8:21 am

1 stop8h 21m

$487

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Mon 5/18

3:00 pm-9:58 pm

1 stop8h 58m

Ontario

Thu 5/28

5:00 am-4:20 pm

2 stops9h 20m

$505

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Thu 5/14

5:15 am-12:10 pm

2 stops8h 55m

Ontario

Tue 5/19

10:55 am-9:55 pm

2 stops9h 00m

$517
Quickest round-trip

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Wed 7/15

3:40 pm-8:42 pm

1 stop7h 02m

Ontario

Sun 7/19

5:00 am-2:03 pm

1 stop7h 03m

$527
Cheapest one-way

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Wed 5/20

5:20 pm-9:48 pm

1 stop6h 28m

$139

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/20

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Birmingham, Alabama-Ontario flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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

How much does it cost to fly round-trip from Birmingham, Alabama to Ontario?

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 April 23, 2026.
Peruse reviews from past customers who have flown with Southwest 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
4,327 reviews

Overall

8.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,327 reviews
Southwest
8.0
Very good
4,327 reviews

Overall

8.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,659 reviews
Southwest
8.0
Very good
4,327 reviews

Overall

8.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 Delta, Southwest, and United Airlines fly from Birmingham, Alabama to Ontario in about 6h 28m. The time it takes to get you to your destination can typically vary by up to 2h 30m. 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 $333. Another airline that can offer you cheap pricing is American Airlines. Users have found that Southwest is 27% 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 $143 on American Airlines. Other airlines that offer cheap prices include Delta from $179 and Southwest from $189 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.

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 April 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$333Average$468FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$371Average$430FlexibilityNo cancel feeOn-time71%

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