C$ 121 Find Cheap Flights from Toronto to Costa Mesa

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Toronto to Costa Mesa departing on 23/10. 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

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Cheap Flights from Toronto to Costa Mesa (YTO-LAX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Toronto to Costa Mesa 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 Toronto to Costa Mesa

Tue, 21 Oct - Sat, 25 Oct
WestJet Logo
1:30 p.m. - 9:46 p.m.YYZ-LAX
11h 16m1 stop
WestJet Logo
12:35 p.m. - 12:43 a.m.LAX-YYZ
9h 08m1 stop
C$ 235WestJet
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Fri, 31 Oct - Sat, 8 Nov
WestJet Logo
10:30 a.m. - 7:50 p.m.YYZ-LAX
12h 20m1 stop
WestJet Logo
11:50 a.m. - 12:38 a.m.LAX-YYZ
9h 48m1 stop
C$ 237WestJet
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Thu, 23 Oct - Sat, 25 Oct
Multiple Airlines Logo
10:40 a.m. - 1:00 p.m.YYZ-LAX
5h 20mdirect
Multiple Airlines Logo
7:00 a.m. - 6:52 p.m.LAX-YYZ
8h 52m1 stop
C$ 238Multiple Airlines
Find Deal
Wed, 15 Oct - Sat, 18 Oct
WestJet Logo
1:30 p.m. - 9:46 p.m.YYZ-LAX
11h 16m1 stop
WestJet Logo
6:05 p.m. - 6:52 a.m.LAX-YYZ
9h 47m1 stop
C$ 240WestJet
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Fri, 24 Oct - Tue, 28 Oct
WestJet Logo
12:00 p.m. - 6:54 p.m.YYZ-LAX
9h 54m1 stop
WestJet Logo
7:20 p.m. - 12:23 p.m.LAX-YYZ
14h 03m1 stop
C$ 241WestJet
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Sat, 25 Oct - Tue, 4 Nov
Multiple Airlines Logo
10:40 a.m. - 1:00 p.m.YYZ-LAX
5h 20mdirect
Multiple Airlines Logo
12:15 p.m. - 12:26 a.m.LAX-YYZ
9h 11m1 stop
C$ 247Multiple Airlines
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Sat, 1 Nov - Wed, 5 Nov
Porter Airlines Logo
10:00 a.m. - 12:36 p.m.YYZ-LAX
5h 36mdirect
Porter Airlines Logo
1:40 p.m. - 9:20 p.m.LAX-YYZ
4h 40mdirect
C$ 283Porter Airlines
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Thu, 23 Oct - Fri, 31 Oct
Porter Airlines Logo
10:40 a.m. - 1:00 p.m.YYZ-LAX
5h 20mdirect
Porter Airlines Logo
1:40 p.m. - 9:22 p.m.LAX-YYZ
4h 42mdirect
C$ 290Porter Airlines
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Mon, 24 Nov - Wed, 3 Dec
Air Canada Logo
3:30 p.m. - 10:15 p.m.YTZ-LAX
9h 45m1 stop
Air Canada Logo
8:20 a.m. - 9:35 p.m.LAX-YTZ
10h 15m1 stop
C$ 295Air Canada
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Thu, 16 Oct - Sat, 18 Oct
Air Canada Logo
12:25 p.m. - 7:40 p.m.YTZ-LAX
10h 15m1 stop
Air Canada Logo
8:05 a.m. - 9:34 p.m.LAX-YTZ
10h 29m1 stop
C$ 323Air Canada
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Everything you should know

Cheapest round-trip
C$ 235
Overall average: C$ 375
WestJet
Tue 21/10Sat 25/10
YYZ - LAX • 1 stop
Cheapest direct flights
C$ 238
Typical prices: C$ 318-497
Porter Airlines
Tue 11/11Wed 19/11
YYZ - LAX • Direct
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We hope you love your trip to Costa Mesa!
Useful Info

Good to know

Low seasonApril
Cheapest flightC$ 169
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly (44% more expensive on average)
Flight from Toronto Pearson Airport to Los Angeles

When to book flights from Toronto to Costa Mesa

Are your dates flexible? Find out the best times to travel from Toronto to Costa Mesa based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from Toronto to Costa Mesa: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Toronto to Costa Mesa 
Verified travelerFlew with United AirlinesYYZ-LAXMar 2025
I wish I had anticipated the delay at the airport and scheduled my ride pickup for 1.5 hours after the estimated arrival time. I was unaware that passengers from Air Canada flights had to board a shuttle bus to access the aircraft.
Verified travelerFlew with United AirlinesYYZ-LAXOct 2024
Make sure you know which terminal to head to upon landing if transferring at Los Angeles as the information board at LAX will show only flight info for the terminal you are at (1 of 8). Transfer information is not transparent from the airline or the airport. Subscribe to airline apps help but can be cumbersome and difficult to manage in a time crunch.
Verified travelerFlew with Air CanadaYYZ-LAXAug 2024
It is great to have a nonstop flight. Might be worth paying a bit extra for it.
Verified travelerFlew with Air CanadaYYZ-LAXAug 2024
Treat this like you’re flying on a greyhound bus. Bring food. Bring a pillow. Bring entertainment. Know that you will be uncomfortable and the airline won’t care.
Verified travelerFlew with United AirlinesYYZ-LAXFeb 2024
Do your check in online because it is much more convenient.
GaryFlew with Air New ZealandYYZ-LAXDec 2023
Get instructions on how to find your connecting flight terminal and gate in LAX. There are no information boards or information desks. We asked a lady in a gift shop, then it was a series of tunnels and stairs that were not well sign posted at all.

FAQs for booking flights from Toronto to Costa Mesa

  • Which airports will I be using when flying from Toronto to Costa Mesa?

    When flying out of Toronto you’ll be using one of these airports: Toronto Region of Waterloo Intl, Toronto Island or Toronto Pearson Intl. Costa Mesa does not have its own airport so you’ll be flying into nearby Los Angeles airport, which is 56.2 km away.

  • How long does a flight from Toronto to Costa Mesa take?

    Direct flights cover the 5,651 km separating Toronto and Costa Mesa in about 5h 20m.

  • How many flights are there between Toronto and Costa Mesa?

    25 direct flights run between Toronto and Costa Mesa on a daily basis. On average, there are about 177 departures each week.

  • What’s the cheapest day of the week to fly between Toronto and Costa Mesa?

    Consider leaving on a Tuesday and avoid Thursdays if you are looking for the best rates. For your return to Toronto, you’ll find the best rates on Thursdays and the most expensive ones on Fridays.

  • How does KAYAK find such low prices on flights from Toronto to Costa Mesa?

    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 Toronto to Costa Mesa.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Costa Mesa from Toronto 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 Toronto to Costa Mesa?

    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 Costa Mesa with an airline and back to Toronto with another airline.

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

    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 Costa Mesa from Toronto up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from Toronto to Costa Mesa?

    In the last 72 hours, the cheapest one-way ticket between Toronto and Costa Mesa found on KAYAK was with Porter Airlines for C$ 169. WestJet offered a round-trip connection from C$ 235 and Porter Airlines from C$ 283.

Top tips for finding cheap flights from Toronto to Costa Mesa

  • There is no airport in Costa Mesa. Instead, you’ll be flying into Los Angeles Airport when flying between Toronto and Costa Mesa.
  • The cheapest flight from Toronto to Costa Mesa was found 88 days before departure, on average.
  • Book at least 2 weeks before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is May.

Top 5 airlines flying from Toronto to Costa Mesa

 
Need help choosing which airline to fly with from Toronto to Costa Mesa? 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.
7.9
Porter AirlinesOverall score based on 372 reviews
8.2Boarding
8.0Comfort
7.6Food
7.0Entertainment
8.6Crew
Airline reviews

Poor landing as we overshot the runway and had to re land the plane. Lost both of my luggage not found as of yet. Had to pay extra money for my luggage in USD, now great my luggage is gone. Will not fly with Porter again.

2.0 MediocreAnonymous, Sep 2025YDF - YHZ
Read more Porter Airlines reviews

Poor landing as we overshot the runway and had to re land the plane. Lost both of my luggage not found as of yet. Had to pay extra money for my luggage in USD, now great my luggage is gone. Will not fly with Porter again.

This flight to St. Johns was really good. Boarding was a breeze. We left spot on time. Seats were actually pretty good. Recliner further than I expected. Three more flights to go we will see if this is the status quo for Porter.👍

I was not happy with AirfareAssist, the agency that kayak advised me would be handling my booking. I was advised by porter airlines that I had been overcharged for the Basic express , a option that I had asked airfare assist to help arrange after I realized that the basic fare I had chosen with porter did not include a carryon. At each checkin porter advised I had been overcharged for this . They advised that money would be refunded to my credit card, however, this is not likely to happen as it is not my name and credit card that appeared on the porter invoice, but that of another individual/agent. When airfare assist was arranging the basic express with porter on my behalf, they asked me to confirm that I agreed to pay $263 USD for this. I did agree, as I was advised this was needed to proceed. When I checked the invoice on the porter website and saw that it was not my name and credit card on the invoice, I was advised that this was how airfareassist processed the payment. The Porter invoice indicated a billed amount of $126USD I will not use Kayak or their designated AirfareAssist again

Our flight was delayed by a bit. I appreciated that we were kept informed on why periodically. Boarding was fine. I overheard one flight attendant sounding very rude to a passenger who was not paying attention to the safety demonstration. The snacks were minimal as it was a short flight. There was no entertainment. Overall the flight was good back to LGA.

The flight was fine see earlier note for the problem

All good the seats a little tight and no I pad screen

Everything was good except the fact you charge more for a carry on bag vs a check in bag and to top it off in US$ that was not impressive

Our flight was cancelled at the last minute for maintenance reasons and we were rebooked on a late flight when we purposefully booked our flight to be home early due to work.

Seemed like an old plane. Very noisy. The seat cushions were so old that the metal bracing of the seats were poking through. There was plenty of leg room though.

The whole experience from check in to deboarding was fantastic.

The flight crew were very good, polite, and professional. Unfortunately, the rest of the experience left much to be desired. The food was extremely bland—almost tasteless. We chose the non vegetarian .The lasagna was just plain pasta with a tiny garnish and no seasoning. It felt like eating starch only, The bigger issue was with luggage and space. We boarded with three tickets, and while the seats in front of us were nearly empty, all the overhead compartments had already been filled by passengers boarding to the back. This left us and many others with no overhead storage for our carry-ons. Our bags couldn’t fit well under the seats either, which meant we lost the little legroom we had. The result was a horrible, cramped experience—sore knees, no space to stretch, and no way to rest or sleep comfortably. According to the crew this was a rather normal thing. It is obviously normal that people board with handbag and carry on but they should be only allowed to use their overhead compartment and under their seat not the way it is managed that all the spaces in the front of the plane being occupied by the people sitting way back in the plane.

Nice complete meal included and great services. Plus the plane was very clean.

Everything was horrible. On the day of my departure, I was denied check-in and boarding because my reservation only showed one of my last names, while my passport contains both. This minor discrepancy could have been easily corrected, but I was informed that no adjustment could be made. As a result, I lost not only my outbound flight but also my return flight and had to purchase a new ticket at a significantly higher cost.

This has been the worst experience I’ve ever had. Basically, I lost my round-trip tickets because one of my last names was missing, and you didn’t allow me to correct it. I had to purchase a full ticket again. Once I get home, I will start legal proceedings against you.

The crew were polite and courteous. The Pilot did an excellent landing. It was very smooth and gentle. My only regret is that I was charged twice for my luggage . The attendant gave me no receipt . I didn't realize until I was about to board. How can this be resolved? Thank you.

Very smooth flights Toronto to Rome and return. Crews were great, food was fine but very narrow seats and limited leg room. Aisle seats on our return helped with a bit more space.

YUL AIRPORT is the worst. 1 Hr to Get out of the plane, 1 Hr To Cross the Border. 1Hr waiting to be pick up curbside. Trafic is ubeliveble.

It’s ok just the boarding point is far too far

Check in slow even though completed online check in, there was no bag drop available so had to query for 90mins as only 2 staff on desks.

Flying to a far away destination is a miracle in itself, so please take these with a grain of salt. The seats are a bit tired, and need a freshen up. The entertainment could be a bit newer, especially with all services available now. The food really is where we need help. But again, flying is a privilege, so all is good.

Subject: Formal Complaint: Discriminatory and Unprofessional Conduct – Request for Immediate Action & Compensation Dear [Airline Customer Relations Team], I am writing to file a formal complaint regarding my recent travel experience with [Airline], which was by far the worst I have ever encountered. What occurred was not only unprofessional, but in several instances discriminatory, unsafe, and unacceptable. On the first leg of my trip, I arrived only four minutes past check-in. Instead of making any attempt to resolve the matter, your representative flatly denied me boarding and made me wait while she attended to passengers who arrived after me. By the time a manager intervened, it was too late to board, costing me time, money, and unnecessary frustration. The second leg of my trip (Chicago–San Francisco) raised even more serious concerns. From the outset, it was apparent that the staff—particularly two attendants—prioritized Caucasian passengers while dismissing African American and minority passengers. • When a Caucasian passenger in the exit row refused to comply with federal safety requirements, I, as a first responder, immediately offered to switch seats and assume the responsibility. My offer was blatantly ignored, and instead, a Caucasian passenger seated further up was chosen. This was discriminatory and deeply insulting, especially as I was actively de-escalating the situation that could have delayed the flight further. • During a lengthy tarmac delay of over 90 minutes, passengers were given conflicting and unreasonable instructions that created unnecessary distress and tension. • Throughout the flight, a visibly intoxicated passenger directly in front of me was disruptive, rude to others, failed to comply with seatbelt and electronic device rules, and yet faced no enforcement from the crew. In stark contrast, I was singled out for repeated compliance checks even though I was following every rule. This unequal treatment was so obvious that multiple passengers around me spoke up in my defense. This pattern of behavior demonstrated a clear lack of professionalism, disregard for passenger safety, and discriminatory treatment. I expect far better from an airline of your stature. As a paying customer subjected to this unacceptable treatment, I am formally requesting: 1. A full investigation into the conduct of the staff on both flights. 2. A written apology acknowledging the discriminatory and unprofessional behavior I endured. 3. Appropriate compensation for the distress, inconvenience, and mishandling of my travel. If this matter is not addressed promptly and thoroughly, I will have no choice but to escalate my complaint further, including filing with the U.S. Department of Transportation and sharing my experience through other channels. I trust [Airline] will take this complaint seriously and provide a timely resolution.

Check in was quick and easy during early hours. Flight was on time, and customer services was a plus.

I understand that the food on the airplane wouldn’t be fantastic. However, it wasn’t good at all. 😭

My flight was delayed about 1 1/2 hours in Chicago, but other then that it was a good flight.

The flight was comfortable with the exit row and great service

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

1. when we went to check in, our 2 first class seats had been CANCELED and the flight was sold out. This was done without our prior knowledge. It was all we could do to restore one first class seat for my wife and I flew economy. 2, Our flight home was scheduled to leave at 10:30 pm. Due to tsunami warnings, the roads were closed and our flight status was uncertain as to whether it would leave as scheduled. It was announced that it would now leave at 11:20 pm and the roads were now open since the tsunami had come and gone. We made a mad dash to the airport and checked in. Delays were announced at 12:30 pm, 1:30 am, 2:30 am and at 3:30 am it was canceled. Since this was a flight due to natural (tsunami) causes, there was no compensation. We were told to return at 1:00 pm the next day and our baggage would be kept on the plane since the same plane was going to leave at 1:00 pm. We had to return to our hotel for the rest of the night. The same plane did not leave at 1:00 pm and our baggage was gone! All in all, it was a miserable performance by UA. Information was hard to obtain and no one knew what was going on and what was going to happen. Hundreds of passengers slept on the floor, chairs, etc. No food and no water was made available to the passengers. It was a situation where UA could care less what was going on. As a one million mile flyer, I had not experienced anything like this before and it was hugely disappointing!

I found the staff to not be very attentive at all. When paying for Business Class you expect a certain type of service and that was not found. They were almost rude even

Ok. Get a different kosher caterer. The food was odd.

Our experience on United Airlines was extremely poor. The plane was extremely cold throughout our entire flight- which multiple people complained about- and we had to wait 2 hours to get a blanket which was too thin and barely helped warm us up. As well as this, none of the entertainment features were working so we had to sit through a roughly 10 hour flight with nothing to keep our attention, including the actual flight path screen. It was an extremely disappointing experience and I would hope that this gets fixed if we ever choose United Airlines again.

There is no snack and nit much that would be considered gluten free in yiur food selections. One of your snacks should be a gluten free cookie or small bar etc. maybe it was me but I didn’t see any free movies just internet connection and YouTube .

I like how spacious the plane was but I did not like the fact that there was no entertainment

In spite of purchasing premium, I felt it was perhaps the most uncomfortable seat I have flown in. The base was either broken or poorly made and had no support. Even placing pillows and blankets on the seat (1D aisle) didn’t help. It made for a long and mostly sleepless six hour flight. Crew also were very loudly talking to each other through the night making it very hard to sleep. It was purchased for the price, so I get the risk, but was not impressed.

The staff at the airport and on the plane were wonderful I especially wanna acknowledge the staff who boarded us at the Calgary airport. The women who helped us board at the airport were incredible… they were so kind and sweet…I very happy with WestJet and I am hoping I can fly more often to Canada.

Absolutely terrible, from the customer service to boarding the plane. On the phone, there was some mishaps with getting in my correct date and they did not help me retrieve a refund or any assistance. I’m gonna be reporting to all my followers and family around the region of Los Angeles to New York.

Generally good. However. The flight left 30 mins behind schedule with no reason given.

Nothing to like because my inbound flight was cancelled without notification by West Jet or third party, JustFly. I couldn’t take the inbound flight due to cancellation; therefore could not take the outbound flight back.

Not the greatest experience everything was pretty mediocre. My seat was by the washroom in the aisle and was not located well as everyone past each other people were right in my seat and space.

There was a medical emergency that the crew handled very well. There was no “entertainment” of any sort-no movie/music/whatever. Food was typical of airlines: mediocre.

We never had an experience they canceled the flight and they did not offer us an alternative flight. I had to book one on my own expense. They offered us food voucher and we could not use them at the airport it kept saying not attached to an existing flight. The people at the counter were rude and cold and they did not care about our situation

The flight was very smooth and good. Boarding was fast, but the staff was just decently friendly.

Air Canada flight staff are in contact negotiations and they are less than happy and it show. The process of self checking baggage is less than desirable with lack of support staff to help

A sandwich and a drink would have been better thank a snack bar...

I liked the behaviour of the crew members.The flight was good.

No food to provide, they forgot that, in some cases, people stay at the airport for hours without food. Now, to provide them with food, they have to ask them to pay, because some don't have money. That way, they can't eat.

Flight was cancelled last minute. Had to scramble and purchase a $2000 flight through a separate airlines. Stuck in Toronto two extra days. Missed my first two days on a new job. Had to rent a car for an additional two days. Scrambled to fins a place to live those extra two days. Spent a ton of extra money and lost a lot of money, as well as made a poor impression at work. Difficult difficult difficult

Terrible, return flight was cancelled a night before the flight was scheduled to depart and I was notified by an email and an automated message on their phone line. I’ll never book Air Canada again

Somebody either kayak or Air Canada booked my flight under my preferred name Betty instead of my legal name and I almost was denied boarding my flight

Ensure prepaid food arrangements are appropriately understood by flight crew of who purchased and who did not

Terrible all around. Flight was late and airplane was very uncomfortable. The crew were unhelpful and hid in the back. Did zero work. No entertainment.

Everything you need to know for your flight from Toronto to Costa Mesa

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