C$ 148 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 31/8. 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.
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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

Sat, 30 Aug - Fri, 5 Sep
Porter Airlines Logo
10:40 a.m. - 1:00 p.m.YYZ-LAX
5h 20mdirect
Porter Airlines Logo
2:00 p.m. - 9:50 p.m.LAX-YYZ
4h 50mdirect
C$ 233Porter Airlines
Find Deal
Sat, 30 Aug - Fri, 5 Sep
Porter Airlines Logo
10:40 a.m. - 1:00 p.m.YYZ-LAX
5h 20mdirect
Porter Airlines Logo
2:00 p.m. - 9:50 p.m.LAX-YYZ
4h 50mdirect
C$ 236Porter Airlines
Find Deal
Tue, 23 Sep - Tue, 7 Oct
WestJet Logo
7:45 p.m. - 10:11 p.m.YYZ-LAX
5h 26mdirect
WestJet Logo
11:10 p.m. - 6:59 a.m.LAX-YYZ
4h 49mdirect
C$ 239WestJet
Find Deal
Tue, 16 Sep - Tue, 30 Sep
WestJet Logo
7:45 p.m. - 10:11 p.m.YYZ-LAX
5h 26mdirect
WestJet Logo
11:10 p.m. - 6:59 a.m.LAX-YYZ
4h 49mdirect
C$ 240WestJet
Find Deal
Sat, 30 Aug - Sat, 6 Sep
Porter Airlines Logo
10:40 a.m. - 1:00 p.m.YYZ-LAX
5h 20mdirect
Porter Airlines Logo
2:00 p.m. - 9:50 p.m.LAX-YYZ
4h 50mdirect
C$ 241Porter Airlines
Find Deal
Sat, 30 Aug - Fri, 5 Sep
WestJet Logo
8:00 a.m. - 5:17 p.m.YYZ-LAX
12h 17m2 stops
WestJet Logo
12:35 p.m. - 12:43 a.m.LAX-YYZ
9h 08m1 stop
C$ 244WestJet
Find Deal
Wed, 27 Aug - Thu, 18 Sep
 Logo
8:00 a.m. - 5:17 p.m.YYZ-LAX
12h 17m2 stops
 Logo
2:00 p.m. - 9:50 p.m.LAX-YYZ
4h 50mdirect
C$ 250
Find Deal
Sat, 30 Aug - Fri, 5 Sep
 Logo
8:00 a.m. - 5:17 p.m.YYZ-LAX
12h 17m2 stops
 Logo
2:00 p.m. - 9:50 p.m.LAX-YYZ
4h 50mdirect
C$ 251
Find Deal
Sat, 13 Sep - Sat, 20 Sep
Air Canada Logo
6:35 p.m. - 8:53 p.m.YYZ-LAX
5h 18mdirect
Air Canada Logo
9:55 p.m. - 5:46 a.m.LAX-YYZ
4h 51mdirect
C$ 256Air Canada
Find Deal
Sat, 13 Sep - Sat, 20 Sep
Air Canada Logo
6:35 p.m. - 8:53 p.m.YYZ-LAX
5h 18mdirect
Air Canada Logo
9:55 p.m. - 5:46 a.m.LAX-YYZ
4h 51mdirect
C$ 259Air Canada
Find Deal
Useful Info

Good to know

Low seasonApril
Cheapest flightC$ 148
Best time to beat the crowds (9% less expensive on average)
Most popular time to fly (45% 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 15m.

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

    26 direct flights run between Toronto and Costa Mesa on a daily basis. On average, there are about 182 departures each week.

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

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

  • 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 WestJet for C$ 148. Porter Airlines offered a round-trip connection from C$ 233 and WestJet from C$ 238.

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 September.

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.
8.0
Porter AirlinesOverall score based on 332 reviews
8.2Boarding
8.0Comfort
7.0Entertainment
7.6Food
8.7Crew
Airline reviews

There was a 5 hour delay. Missed connection and now an almost 21 hour lay over!

2.0 MediocreKirsten, Aug 2025BOS - YOW
Read more Porter Airlines reviews

There was a 5 hour delay. Missed connection and now an almost 21 hour lay over!

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.

Flight was delayed over 2 hours, then landed at a different airport!

The whole experience from check in to deboarding was fantastic.

Just an evening before they canceled my ticket and offered me ticket costing 3 x times more than. I will not fall prey to these scams,Will never book through kayak now. Such a bad experience.

was okay except.. 1)the porter check in webpage doesn't let you print your boarding pass from home 2)that there was a 90 min cut off for checking in on the kiosk in general, and to print a boarding pass, even tho i checked in online already....

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.

Not so much porter it's your site! Not good

They are a sister company with Air Transat and the two companies do not work well together. If you have any issues the two companies will blame each other and you will miss your flights. The help line does not help

Never book through a third party. Book through Air transats website. Terrible process to get help and many issues happen with them and sister companies because half the flights you book with them aren’t even through air transat.

The plane was pretty full, and we dis not have any includes meal for our 4h30 flight? And on-board entertainment wasn't available, there was no TV or plugging to charger your device on the plane. They told us to download an app if we wanted to watch movies but it never connected, that was a disappointment, the r we st was very good though and the crew were really nice!

Seats were very tight especially for first leg of trip.

Not necessarily a Transat issue but it took 2 hours to go through immigration. Tried to reach out to Transat for resolution but was unable to reach an agent.

The flight was excellent, once it started, however we were delayed two hours when the first plane’s engines wouldn’t start. They found another identical plane and transferred us and our luggage in under two hours and made up almost an hour in the air.

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.

I really enjoyed flying with United airlines amazing experience , good customer service and great food

1.It will be better if sandwich is warm. 2.The food is too salty. 3.Breakfast needs some vegetables or fruits.

Boarded plane and then delayed 1.5 hours while on the plane

It was all good flight was on time, service was good I enjoyed a few movies and everything was smooth

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

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

It took 30 minutes to check in with the Westjet rep. They didn’t have enough seats and she needed to make a call… I am always “randomly” selected to be checked at security. Their “randomly “ selection system may need some updating. They treat people like criminals. It is not appropriate behavior.

Found the seats very crowded—too close together ! And waited a long time for our luggage All staff at both ends were excellent!!!

Great breakfast and coffee …..fastest bag service I have ever had in NOLA

Late departing. Late arriving. More worried about limiting bags on board. Free beer and wine a nice surprise.

Flight got delayed for no reason. And Air Canada was doing 3 boardings via the same gate. It was chaotic!

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.

I booked and paid extra for exit door seats also pre paid for my luggage air Canada changed plains and I never got what I paid for and they made me pay for luggage again they also did this to my wife. They are the most unorganized company I have ever dealt with. I am sure I will never see the extra money I paid for the seats or the recharge for the luggage. They are subsidized by the taxpayers and don’t give a dam just a horrible way to do business

Multiple change of the gates at Pearson, delayed flight was extremely uncomfortable.

Never made this leg of the flight since we rebooked through United instead. Did not make it to immigration/US custom due to the delay. Had to spend the night on our own dime in Toronto

YYZ air Canada security messed up which led to my kids missing their flight and having to go on a separate flight later in the day without the rest of the family. Customer service was horrible and have no sense of urgency or compassion for their customers. They refuse to compensate for their errors and making my kids wait hours in the airport. This isn’t the first time we have had issues with this airline and I won’t be flying with them again.

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

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