BHM - ONT

$154 Find Cheap Flights from Birmingham to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Birmingham to Ontario departing on 2/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Birmingham to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Birmingham to Ontario, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$307
Delta
Wed 2/25Tue 3/3
BHM - ONT • 1 stop
Cheapest one-way
$154
Typical prices: $300-$431
American Airlines
Tue 2/17
BHM - ONT • 1 stop
Top airlines
Delta
Cheapest • from $307 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
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Booking Insights
Flight Deals

Cheap Flights from Birmingham to Ontario (BHM-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Birmingham to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Birmingham to Ontario

Wed, Feb 25 - Tue, Mar 3
Delta Logo
5:20 am - 12:02 pm
BHM
-
ONT
8h 42m
1 stop
Delta Logo
10:20 pm - 8:01 am
ONT
-
BHM
7h 41m
1 stop
$307Delta
Wed, Feb 25 - Tue, Mar 3
United Airlines Logo
9:42 am - 8:50 pm
BHM
-
ONT
13h 08m
2 stops
United Airlines Logo
5:00 am - 2:01 pm
ONT
-
BHM
7h 01m
1 stop
$312United Airlines
Wed, Feb 25 - Tue, Mar 3
American Airlines Logo
7:00 am - 4:19 pm
BHM
-
ONT
11h 19m
2 stops
American Airlines Logo
10:56 am - 11:59 pm
ONT
-
BHM
11h 03m
2 stops
$318American Airlines
Sat, Apr 18 - Tue, Apr 21
United Airlines Logo
4:55 pm - 9:50 pm
BHM
-
ONT
6h 55m
1 stop
United Airlines Logo
6:05 am - 2:04 pm
ONT
-
BHM
5h 59m
1 stop
$381United Airlines
Sat, Apr 18 - Tue, Apr 21
United Airlines Logo
9:40 am - 8:36 pm
BHM
-
ONT
12h 56m
2 stops
United Airlines Logo
6:05 am - 2:04 pm
ONT
-
BHM
5h 59m
1 stop
$386United Airlines
Sat, Apr 18 - Tue, Apr 21
Southwest Logo
12:40 pm - 8:15 pm
BHM
-
ONT
9h 35m
2 stops
Southwest Logo
10:55 am - 9:55 pm
ONT
-
BHM
9h 00m
2 stops
$392Southwest
Fri, May 8 - Wed, May 13
United Airlines Logo
3:52 pm - 8:36 pm
BHM
-
ONT
6h 44m
1 stop
United Airlines Logo
5:00 am - 2:56 pm
ONT
-
BHM
7h 56m
1 stop
$407United Airlines
Wed, Apr 1 - Sun, Apr 5
American Airlines Logo
5:00 am - 10:06 am
BHM
-
ONT
7h 06m
1 stop
American Airlines Logo
10:36 pm - 8:16 am
ONT
-
BHM
7h 40m
1 stop
$408American Airlines
Fri, May 8 - Wed, May 13
United Airlines Logo
3:52 pm - 8:36 pm
BHM
-
ONT
6h 44m
1 stop
United Airlines Logo
6:00 am - 9:29 pm
ONT
-
BHM
13h 29m
2 stops
$412United Airlines
Wed, Apr 1 - Sun, Apr 5
American Airlines Logo
5:00 am - 10:06 am
BHM
-
ONT
7h 06m
1 stop
American Airlines Logo
7:59 pm - 8:16 am
ONT
-
BHM
10h 17m
2 stops
$413American Airlines
Booking Insights

KAYAK's insights & trends for Birmingham to Ontario flights

Get data-powered insights and trends into flights from Birmingham to Ontario to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Birmingham to Ontario?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Birmingham to Ontario were found on Delta ($307) and United Airlines ($312).

Good to know

Low seasonSeptember
Cheapest flight$154
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Birmingham to Ontario

When to book flights from Birmingham to Ontario

Are your dates flexible? Find out the best times to travel from Birmingham to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Birmingham to Ontario

  • What is the cheapest flight from Birmingham to Ontario?

    In the last 3 days, the lowest price for a flight from Birmingham to Ontario was $154 for a one-way ticket and $307 for a round-trip.

  • Do I need a passport to fly between Birmingham and Ontario?

    No, a passport isn't needed to fly from Birmingham to Ontario. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Birmingham to Ontario?

    When flying out of Birmingham you will be using Birmingham. You will be landing at Ontario, also known as Ontario.

  • Which aircraft models fly most regularly from Birmingham to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Birmingham to Ontario?

    SkyTeam, and oneworld are the airline alliances operating flights between Birmingham and Ontario, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Birmingham to Ontario, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Birmingham to Ontario are Southwest and Delta. With an average price for the route of $468 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $402 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Birmingham to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Birmingham to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Birmingham to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Birmingham is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Birmingham to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Birmingham with another airline. Booking your flights between Birmingham and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Birmingham to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Birmingham up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Birmingham to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Birmingham to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Birmingham to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4268 reviews
7.5Entertainment
7.0Food
8.0Comfort
8.6Crew
8.1Boarding
Airline reviews

3 hour delay. Had to change plans and was still delayed.

2.0 MediocreAnonymous, Jan 2026
SFO - SAN
Read more Southwest reviews

3 hour delay. Had to change plans and was still delayed.

The flight crew was extremely rude and especially not helpful when our flight was delayed.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Connecting flight is on time and boarding was a breeze!

Very smooth checking in our luggage with a super pleasant SW agent. I enjoyed a fun entertaining movie.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Flight delayed then cancelled. Misplaced luggage. Still do not have. Rented car 1100 mile drive. I had to buy some overnight Hotels clothes toiletries gas food at my expense. Still not home. Not sure where luggage is. Over 4 hours on hold to Felta

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

Food was surprisingly good but the WiFi was not great

Amazing I love American. I’ll never fly anyone else if I can help it.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

After the door had been closed, the cockpit makes an announcement that catering is running late and it is not the airline's fault. It is their fault in the sense that we had to sit for 2 hours or more when we could have stayed in the terminal. Poor communications between catering and airline. This caused a young man to lose his temper and he went storming out hitting objects. He had complained to the gate agent that he had already waited at the gate 7 hours and when can the airplane leave? Airilnes do a poor job of explaining delays, maintenance issues, etc. whereas being truthful may gain more sympathy or understanding.

We were told the flight was delayed 5 times, then it was moved to the next day.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

Loved the crew . Absolutely no complaints. Except for luggage lost

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

We are too tired and frustrated to comment politely at this point

Flight attendants on this flight were very attentive and friendly

The flight crew was rude. We were in first class and no one even offered water until an hour after we were in the air. Horrible experience

Everything you need to know for your flight from Birmingham to Ontario

Information on your arrival and departure airports