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Ontario

$129+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
BHM — ONT
Apr 29 — May 61
Wed 4/29
Wed 5/6
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 March 30, 2026.

This Southwest deal was found by Cheapflights users on 3/26. 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.
Sat 4/2512:40 pm
BHM
-
ONT
1 stop6h 05m
Southwest
Sat 5/25:40 am
ONT
-
BHM
1 stop7h 35m
Southwest
Deal found 3/26$309
This Delta deal was found by Cheapflights users on 3/28. 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 4/224:19 pm
BHM
-
ONT
1 stop6h 41m
Delta
Sat 5/910:00 pm
ONT
-
BHM
1 stop8h 27m
Delta
Deal found 3/28$347
This United Airlines deal was found by Cheapflights users on 3/29. 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 4/217:30 am
BHM
-
ONT
2 stops12h 32m
United Airlines
Sat 4/256:05 am
ONT
-
BHM
1 stop8h 09m
United Airlines
Deal found 3/29$352
This United Airlines deal was found by Cheapflights users on 3/26. 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 3/26$357
This United Airlines deal was found by Cheapflights users on 3/26. 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 5/54:55 pm
BHM
-
ONT
1 stop7h 03m
United Airlines
Tue 5/126:00 am
ONT
-
BHM
2 stops13h 29m
United Airlines
Deal found 3/26$362
This Delta deal was found by Cheapflights users on 3/28. 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.
Thu 4/231:53 pm
BHM
-
ONT
1 stop9h 07m
Delta
Sat 5/910:00 pm
ONT
-
BHM
1 stop8h 27m
Delta
Deal found 3/28$373
This American Airlines deal was found by Cheapflights users on 3/26. 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.
Tue 6/27:10 pm
BHM
-
ONT
1 stop6h 49m
American Airlines
Sat 6/62:18 pm
ONT
-
BHM
1 stop7h 33m
American Airlines
Deal found 3/26$398
This Delta deal was found by Cheapflights users on 3/28. 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.
Thu 4/231:53 pm
BHM
-
ONT
1 stop9h 07m
Delta
Mon 5/410:15 pm
ONT
-
BHM
1 stop8h 07m
Delta
Deal found 3/28$399
This Delta deal was found by Cheapflights users on 3/28. 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 4/224:19 pm
BHM
-
ONT
1 stop6h 41m
Delta
Fri 5/810:00 pm
ONT
-
BHM
1 stop8h 13m
Delta
Deal found 3/28$402

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 March 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$309
(Southwest)

One-way from

$129
(United Airlines)

Popular in

August

Cheapest in

October

Average price

$457
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
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 30, 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 5/12

4:55 pm-9:58 pm

1 stop7h 03m

Ontario

Wed 5/13

5:00 am-2:56 pm

1 stop7h 56m

$357

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Tue 6/2

5:30 pm-9:50 pm

1 stop6h 20m

Ontario

Sat 6/6

9:50 am-9:25 pm

2 stops9h 35m

$403

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Tue 6/2

5:20 pm-9:48 pm

1 stop6h 28m

Ontario

Wed 7/8

10:00 pm-8:25 am

1 stop8h 25m

$458

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Wed 4/15

1:53 pm-9:00 pm

1 stop9h 07m

Ontario

Sat 4/18

12:49 pm-10:55 pm

1 stop8h 06m

$462

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Tue 6/2

11:05 am-6:55 pm

2 stops9h 50m

Ontario

Mon 7/6

2:30 pm-11:45 pm

2 stops7h 15m

$467
Quickest round-trip

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Thu 6/4

5:20 pm-9:48 pm

1 stop6h 28m

Ontario

Wed 7/8

10:00 pm-7:22 am

1 stop7h 22m

$508
Cheapest one-way
Quickest one-way

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Mon 5/11

6:20 pm-10:40 pm

1 stop6h 20m

$155

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Sat 4/25

8:00 am-12:38 pm

1 stop6h 38m

$174

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Fri 4/17

4:55 pm-9:50 pm

1 stop6h 55m

$181

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Tue 4/14

3:40 pm-10:10 pm

2 stops8h 30m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 17 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 March.
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

What is the cheapest month to book a flight from Birmingham, Alabama to Ontario?

Currently, February is the cheapest month in which you can book a flight from Birmingham, Alabama to Ontario (average of $140). Flying from Birmingham, Alabama to Ontario in November is currently the most expensive (average of $303). 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.

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 March 30, 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
4,329 reviews

Entertainment

7.5

Crew

8.6

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

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
4,329 reviews
Southwest
8.0
Very good
4,329 reviews

Entertainment

7.5

Crew

8.6

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

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
11,531 reviews
Southwest
8.0
Very good
4,329 reviews

Entertainment

7.5

Crew

8.6

Comfort

8.0

Overall

8.0

Food

7.0

Boarding

8.1

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 United Airlines and Southwest fly from Birmingham, Alabama to Ontario in about 6h 20m. The time it takes to get you to your destination can typically vary by up to 43m. 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 25% 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, February is the cheapest month in which you can book a flight from Birmingham, Alabama to Ontario (average of $140). Flying from Birmingham, Alabama to Ontario in November is currently the most expensive (average of $303). 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 March 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$333Average$468FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$371Average$423FlexibilityNo cancel feeOn-time71%

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