HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Birmingham

$217+ Cheap flights from Ontario to Birmingham, AL (ONT - BHM)

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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BHM
Aug 19 — Aug 261
Wed 8/19
Wed 8/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Birmingham with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Ontario to Birmingham

Cheapest flights from Ontario to Birmingham
Explore the most affordable flight options available from Ontario to Birmingham. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 20, 2026.

This Delta deal was found by Cheapflights users on 7/19. 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.
Mon 8/1010:00 pm
ONT
-
BHM
1 stop8h 10m
Delta
Thu 8/136:22 am
BHM
-
ONT
1 stop6h 20m
Delta
Deal found 7/19$359
This Southwest deal was found by Cheapflights users on 7/16. 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 9/162:15 pm
ONT
-
BHM
1 stop6h 15m
Southwest
Mon 9/215:20 am
BHM
-
ONT
1 stop7h 00m
Southwest
Deal found 7/16$366
This Delta deal was found by Cheapflights users on 7/17. 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 8/227:05 am
ONT
-
BHM
1 stop7h 47m
Delta
Sat 8/296:22 am
BHM
-
ONT
1 stop6h 20m
Delta
Deal found 7/17$376
This United Airlines deal was found by Cheapflights users on 7/19. 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.
Wed 9/165:00 am
ONT
-
BHM
1 stop6h 47m
United Airlines
Mon 9/213:00 pm
BHM
-
ONT
1 stop8h 59m
United Airlines
Deal found 7/19$383
This American Airlines deal was found by Cheapflights users on 7/15. 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 11/612:46 pm
ONT
-
BHM
1 stop8h 22m
American Airlines
Wed 11/116:41 am
BHM
-
ONT
1 stop7h 12m
American Airlines
Deal found 7/15$395
This Delta deal was found by Cheapflights users on 7/17. 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.
Mon 8/1010:00 pm
ONT
-
BHM
1 stop8h 10m
Delta
Mon 8/175:22 pm
BHM
-
ONT
1 stop6h 30m
Delta
Deal found 7/17$399
This Southwest deal was found by Cheapflights users on 7/15. 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 10/710:25 am
ONT
-
BHM
1 stop9h 00m
Southwest
Fri 10/910:40 am
BHM
-
ONT
1 stop7h 10m
Southwest
Deal found 7/15$400
This Delta deal was found by Cheapflights users on 7/18. 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.
Wed 10/712:18 pm
ONT
-
BHM
1 stop5h 54m
Delta
Fri 10/94:05 pm
BHM
-
ONT
1 stop7h 56m
Delta
Deal found 7/18$408

Find flight deals from Ontario to Birmingham

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Birmingham (BHM). 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 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$359
(Delta)

One-way from

$217
(United Airlines)

Popular in

November

Cheapest in

September

Average price

$543
Provider with most accurate pricing for Ontario-Birmingham flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Birmingham flights.
Search Deals
From Ontario to Birmingham
Search Deals
One-way flight from Ontario to Birmingham
Search Deals
Highest demand for flights based on searches. 27% potential increase in price ($192 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Birmingham 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 20, 2026.
Use the filters below to find and compare flights from Ontario to Birmingham that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Tue 12/1

12:00 pm-8:05 pm

1 stop6h 05m

Birmingham

Sat 12/12

5:25 am-11:27 am

1 stop8h 02m

$359

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Wed 9/16

9:40 am-9:50 pm

2 stops10h 10m

Birmingham

Mon 9/21

3:40 pm-10:05 pm

2 stops8h 25m

$376

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Sat 8/22

7:05 am-4:52 pm

1 stop7h 47m

Birmingham

Sat 8/29

5:06 am-10:42 am

1 stop7h 36m

$379

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Mon 8/10

10:00 pm-8:10 am

1 stop8h 10m

Birmingham

Mon 8/17

5:22 pm-9:52 pm

1 stop6h 30m

$399

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Wed 10/7

10:55 am-8:45 pm

2 stops7h 50m

Birmingham

Fri 10/9

1:55 pm-9:20 pm

2 stops9h 25m

$405

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Thu 9/17

2:00 pm-10:15 pm

1 stop6h 15m

Birmingham

Mon 9/21

10:35 am-4:10 pm

1 stop7h 35m

$439

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Tue 10/6

5:00 am-2:53 pm

1 stop7h 53m

Birmingham

Wed 10/7

3:57 pm-8:58 pm

1 stop7h 01m

$446
Quickest round-trip

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Sun 8/2

5:45 am-2:08 pm

1 stop6h 23m

Birmingham

Fri 8/7

5:08 pm-9:55 pm

1 stop6h 47m

$457

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Wed 12/23

5:10 am-3:40 pm

2 stops8h 30m

Birmingham

Mon 12/28

7:00 am-1:20 pm

1 stop8h 20m

$482
Cheapest one-way

OntarioBirmingham

ONT - BHM

ONTBHM

Ontario

Fri 9/11

5:00 am-1:47 pm

1 stop6h 47m

$251

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/17

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

Compare providers for flights from Ontario to Birmingham

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 Ontario to Birmingham in July.
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 Ontario-Birmingham, Alabama flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Birmingham, Alabama flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Birmingham, Alabama flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Birmingham, Alabama 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 Ontario-Birmingham, Alabama 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 Ontario to Birmingham

Have a flexible travel schedule? Discover the best time to fly to Birmingham from Ontario 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 Ontario to Birmingham

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

Currently, September is the cheapest month in which you can book a flight from Ontario to Birmingham, Alabama (average of $366). Flying from Ontario to Birmingham, Alabama in November is currently the most expensive (average of $976). 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 Ontario to Birmingham, Alabama?

Reviews of airlines servicing Birmingham

Get insights into the airlines that provide service to Birmingham. 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 Birmingham. Reviews last updated July 20, 2026.
Read through reviews of airlines operating flights from Ontario to Birmingham, such as Southwest,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,241 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
United Airlines
7.4
Good
10,013 reviews
Southwest
8.0
Very good
4,241 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
American Airlines
7.1
Good
11,826 reviews
Southwest
8.0
Very good
4,241 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Birmingham. 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 Ontario to Birmingham, Alabama?

    Airlines like Delta and Southwest fly from Ontario to Birmingham, Alabama in about 6h 05m. The time it takes to get you to your destination can typically vary by up to 4h 05m. Ontario and Birmingham, Alabama are separated by a distance of 1763 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Ontario to Birmingham, Alabama round-trip?

    Cheapflights users have booked flights from Ontario to Birmingham, Alabama round-trip from $223. Other airlines that can offer you cheap pricing are American Airlines, from $326, and Southwest, from $333. These flights start at 56% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Ontario to Birmingham, Alabama one-way?

    $143 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on American Airlines and Southwest, with prices starting from $153 and $164, respectively.

  • Can I find deals for flights from Ontario to Birmingham that include hotel bookings?

    Yes. In addition to deals on Ontario to Birmingham flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Birmingham?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Birmingham.

  • Can I find deals for business class flights from Ontario to Birmingham?

    Yes. Cheapflights offers flight deals from Ontario to Birmingham 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 Ontario to Birmingham, Alabama?

    Currently, September is the cheapest month in which you can book a flight from Ontario to Birmingham, Alabama (average of $366). Flying from Ontario to Birmingham, Alabama in November is currently the most expensive (average of $976). 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

Traveling to a place near Birmingham?

Book flights to Birmingham if you plan to visit one of these locations
Fultondale
Hoover
Homewood
Bessemer

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Birmingham

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Atlanta flights
San Francisco to Atlanta flights
Ontario to Atlanta flights
Las Vegas to Atlanta flights
San Diego to Atlanta flights
Burbank to Atlanta flights
Santa Ana to Atlanta flights
Sacramento to Atlanta flights
San Jose to Atlanta flights
Oakland to Atlanta flights
Los Angeles to Pensacola flights
Fresno to Atlanta flights
Ontario to Pensacola flights
Los Angeles to Birmingham flights
Sacramento to Pensacola flights
Reno to Atlanta flights
San Diego to Pensacola flights
San Francisco to Pensacola flights
Los Angeles to Valparaiso flights
San Francisco to Chattanooga flights
Los Angeles to Huntsville flights
San Francisco to Mobile flights
Long Beach to Atlanta flights
San Jose to Birmingham flights
Palm Springs to Atlanta flights
Sacramento to Huntsville flights
Las Vegas to Birmingham flights
San Diego to Valparaiso flights
San Francisco to Huntsville flights
Ontario to Chattanooga flights
Palm Springs to Pensacola flights
Las Vegas to Pensacola flights
San Jose to Pensacola flights
Ontario to Huntsville flights
Los Angeles to Chattanooga flights
San Diego to Chattanooga flights
Ontario to Valparaiso flights
Santa Ana to Birmingham flights
Las Vegas to Chattanooga flights
Las Vegas to Huntsville flights
San Luis Obispo to Atlanta flights
San Diego to Huntsville flights
San Francisco to Birmingham flights
Burbank to Chattanooga flights
Santa Ana to Huntsville flights
Santa Ana to Chattanooga flights

Top 3 airlines flying from Ontario to Birmingham

Discover the top 3 airlines that operate flights from Ontario to Birmingham. 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 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$223Average$394FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$326Average$424FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$333Average$496FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.