HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$174+ 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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
BHM — ONT
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Birmingham to Ontario 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 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$342
(Delta)

One-way from

$174
(Delta)

Popular in

February

Cheapest in

November

Average price

$755
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. 11% potential increase in price ($66 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

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 February 20, 2025.

This Delta deal was found by Cheapflights users on 2/18. 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.
Mon 4/215:42 pmBHM - ONT
1 stop6h 54mDelta
Wed 4/2312:10 pmONT - BHM
1 stop8h 37mDelta
Deal found 2/18$337
This Southwest deal was found by Cheapflights users on 2/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/72:35 pmBHM - ONT
2 stops10h 25mSouthwest
Thu 6/1910:45 amONT - BHM
1 stop6h 35mSouthwest
Deal found 2/19$422
This United Airlines deal was found by Cheapflights users on 2/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/183:30 pmBHM - ONT
1 stop7h 27mUnited Airlines
Tue 3/251:40 pmONT - BHM
1 stop5h 49mUnited Airlines
Deal found 2/18$437
This Trip.com deal was found by Cheapflights users on 2/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/144:13 pmBHM - ONT
1 stop8h 30mMultiple Airlines
Thu 4/312:59 amONT - BHM
1 stop18h 50mMultiple Airlines
Deal found 2/19$466
This American Airlines deal was found by Cheapflights users on 2/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/71:45 pmBHM - ONT
2 stops9h 51mAmerican Airlines
Wed 6/1812:57 amONT - BHM
1 stop5h 58mAmerican Airlines
Deal found 2/19$552
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/59:22 amBHM - ONT
2 stops14h 05mAlaska Airlines
Wed 3/196:00 amONT - BHM
2 stops13h 37mAlaska Airlines
Deal found 2/20$857

Find flights from Birmingham to Ontario within your budget

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 February 20, 2025.

Fly from

Birmingham

Fly to

Ontario

Route

Depart

Return

Price

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Mon 4/21

5:42 pm-10:36 pm

1 stop6h 54m

Ontario

Wed 4/23

12:10 pm-10:47 pm

1 stop8h 37m

$337

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Tue 3/18

3:30 pm-8:57 pm

1 stop7h 27m

Ontario

Tue 3/25

1:40 pm-9:29 pm

1 stop5h 49m

$437

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Fri 3/14

4:13 pm-10:43 pm

1 stop8h 30m

Ontario

Thu 4/3

12:59 am-9:49 pm

1 stop18h 50m

$466

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Wed 3/5

9:22 am-9:27 pm

2 stops14h 05m

Ontario

Wed 3/19

6:00 am-9:37 pm

2 stops13h 37m

$857

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Sat 3/15

6:20 am-11:36 am

1 stop7h 16m

$174

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Thu 3/13

2:45 pm-10:00 pm

2 stops9h 15m

$244

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Thu 3/6

8:00 am-8:57 pm

1 stop14h 57m

$278

BirminghamOntario

BHM - ONT

BHMONT

Birmingham

Thu 3/20

5:05 am-6:23 pm

2 stops15h 18m

$384

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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.

Travel insights for flights from Birmingham to Ontario

Get recent, data-driven insights about flights from Birmingham to Ontario including ideal travel times, pricing trends, and more.

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 $315). 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 February 20, 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.

What is the cheapest day to fly from Birmingham, Alabama to Ontario?

Use this chart to determine the cheapest time to fly round-trip from Birmingham to Ontario. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Birmingham, Alabama to Ontario flight should consider departing on Tuesday mornings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 February 20, 2025.
See what other customers who have flown with Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

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 $342. Other airlines that can offer you cheap pricing are American Airlines, from $352, and United Airlines, from $468. Users have found that Delta is 29% 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 $174 on Delta. Other airlines that offer cheap prices include American Airlines from $244 and United Airlines from $278 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 $315). 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

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 Birmingham to Ontario

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

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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$336Average$481FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$338Average$416FlexibilityNo cancel feeOn-time63%
DeltaCheapest$376Average$431FlexibilityNo cancel feeOn-timeN/A
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.