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Cheap flights from Toronto to Costa Mesa from C$ 294

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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
YTO — LAX
12 Aug — 19 Aug1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Toronto to Costa Mesa are usually found in October or September, booked 69 days in advance, depart on a Thursday or Friday and return on a Saturday

Cheap flight deals from Toronto to Costa Mesa

Enter your travel dates to find the best prices.

Cheapest flights from Toronto to Costa Mesa
Explore the most affordable flight options available from Toronto to Costa Mesa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 July 2026.

Wed 14/1011:05 a.m.
YYZ
-
LAX
Nonstop5h 15m
Multiple Airlines
Mon 26/105:45 p.m.
LAX
-
YYZ
1 stop9h 28m
Multiple Airlines
Deal found 13/7C$ 522
Fri 4/98:00 a.m.
YYZ
-
LAX
1 stop9h 05m
WestJet
Thu 10/96:05 p.m.
LAX
-
YYZ
1 stop9h 50m
WestJet
Deal found 13/7C$ 524
Sun 11/103:50 p.m.
YYZ
-
LAX
1 stop9h 15m
WestJet
Wed 28/105:45 p.m.
LAX
-
YYZ
1 stop9h 28m
WestJet
Deal found 13/7C$ 525
Sat 14/1110:53 a.m.
YYZ
-
LAX
1 stop10h 27m
Multiple Airlines
Sat 21/1110:55 p.m.
LAX
-
YYZ
Nonstop4h 46m
Multiple Airlines
Deal found 13/7C$ 528
Wed 14/1011:05 a.m.
YYZ
-
LAX
Nonstop5h 15m
Multiple Airlines
Sun 25/107:00 a.m.
LAX
-
YYZ
1 stop9h 38m
Multiple Airlines
Deal found 13/7C$ 529
Sat 5/98:00 a.m.
YYZ
-
LAX
1 stop9h 05m
WestJet
Fri 11/98:20 a.m.
LAX
-
YYZ
Nonstop4h 50m
WestJet
Deal found 13/7C$ 531
Sat 10/108:00 a.m.
YYZ
-
LAX
1 stop9h 05m
WestJet
Sun 25/107:00 a.m.
LAX
-
YYZ
1 stop9h 38m
WestJet
Deal found 13/7C$ 532
Sun 1/116:30 a.m.
YYZ
-
LAX
1 stop7h 38m
Delta
Fri 13/1110:45 a.m.
LAX
-
YYZ
1 stop8h 13m
Delta
Deal found 13/7C$ 534
Fri 25/911:05 a.m.
YYZ
-
LAX
Nonstop5h 15m
Multiple Airlines
Mon 5/1011:47 a.m.
LAX
-
YYZ
1 stop15h 52m
Multiple Airlines
Deal found 13/7C$ 535
Fri 28/88:00 a.m.
YYZ
-
LAX
2 stops12h 10m
WestJet
Tue 1/96:05 p.m.
LAX
-
YYZ
2 stops19h 10m
WestJet
Deal found 10/7C$ 536
Sat 5/98:40 p.m.
YKF
-
LAX
1 stop18h 45m
WestJet
Fri 11/97:30 a.m.
LAX
-
YKF
1 stop9h 20m
WestJet
Deal found 11/7C$ 536
Mon 31/83:00 p.m.
YYZ
-
LAX
1 stop9h 35m
Air Canada
Wed 23/94:30 p.m.
LAX
-
YYZ
Nonstop4h 43m
Air Canada
Deal found 9/7C$ 538

Find flight deals from Toronto to Costa Mesa

Keep the following information in mind while searching for Toronto to Costa Mesa flight deals. Data was last updated 13 July 2026.

Round-trip from

C$ 535

One-way from

C$ 294

Popular in

June

Cheapest in

October

Average price

C$ 624
Porter Airlines
  • Porter Airlines
  • 13/10-19/10
  • Nonstop
  • 9h 55m total
  • Toronto to Costa Mesa
Search Deals
WestJet
  • WestJet
  • 9/9
  • 2 total stops
  • 20h 10m total
  • Toronto to Costa Mesa
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (C$ 153 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 20 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 Toronto to Costa Mesa 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 629,999 searches. Data last updated 13 July 2026.
Use the filters below to find and compare flights from Toronto to Costa Mesa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Fri 25/9

11:05 a.m.-1:20 p.m.

Nonstop5h 15m

Los Angeles

Wed 30/9

2:20 p.m.-10:00 p.m.

Nonstop4h 40m

C$ 544

TorontoLos Angeles

YKF - LAX

YKFLAX

Toronto Region of Waterloo Intl

Wed 2/9

8:40 p.m.-12:25 p.m.

1 stop18h 45m

Los Angeles

Fri 11/9

7:30 a.m.-7:50 p.m.

1 stop9h 20m

C$ 558

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Fri 7/8

5:15 p.m.-12:09 a.m.

1 stop9h 54m

Los Angeles

Thu 13/8

6:00 a.m.-4:14 p.m.

1 stop7h 14m

C$ 575

TorontoLos Angeles

YKF - LAX

YKFLAX

Toronto Region of Waterloo Intl

Wed 23/9

8:40 p.m.-10:05 p.m.

1 stop28h 25m

Los Angeles

Tue 29/9

7:30 a.m.-7:50 p.m.

1 stop9h 20m

C$ 575

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Mon 27/7

9:45 a.m.-5:33 p.m.

1 stop10h 48m

Los Angeles

Mon 3/8

9:30 p.m.-12:23 p.m.

1 stop11h 53m

C$ 576

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Thu 13/8

7:45 a.m.-4:19 p.m.

1 stop11h 34m

Los Angeles

Sun 16/8

9:40 a.m.-11:03 p.m.

1 stop10h 23m

C$ 576

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Wed 19/8

10:15 a.m.-5:37 p.m.

1 stop10h 22m

Los Angeles

Tue 25/8

6:00 a.m.-4:14 p.m.

1 stop7h 14m

C$ 576

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Fri 24/7

9:45 a.m.-5:33 p.m.

1 stop10h 48m

Los Angeles

Tue 28/7

10:20 p.m.-11:19 a.m.

1 stop9h 59m

C$ 576

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Fri 7/8

12:25 p.m.-9:03 p.m.

1 stop11h 38m

Los Angeles

Mon 17/8

9:40 a.m.-11:03 p.m.

1 stop10h 23m

C$ 576

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Fri 14/8

12:09 p.m.-8:09 p.m.

1 stop11h 00m

Los Angeles

Mon 17/8

9:40 a.m.-11:03 p.m.

1 stop10h 23m

C$ 576

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Toronto to Costa Mesa

Have a flexible travel schedule? Discover the best time to fly to Costa Mesa from Toronto 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 Toronto to Costa Mesa

What is the cheapest time of day to fly from YTO to CM3?

Find hourly flight availability from Toronto to Costa Mesa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 July 2026.

It’s optimal to fly from Toronto to Costa Mesa in the morning. By choosing this option you can save up to 46% on the cost of your flight, compared to a flight in the evening.

Weekly flight availability from Toronto to Costa Mesa

Explore weekly flight availability from Toronto to Costa Mesa. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 13 July 2026.

The most flights from YTO to CM3 are scheduled on a Saturday (23 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (15 on average).

How much does it cost to fly round-trip from Toronto to Costa Mesa?

What is the cheapest day to fly from Toronto to Costa Mesa?

Use this chart to determine the cheapest time to fly round-trip from Toronto to Costa Mesa. Price data was last updated on 11 July 2026.

Travelers seeking maximum savings on their Toronto to Costa Mesa flight should consider departing on Friday evenings when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Costa Mesa

Get insights into the airlines that provide service to Costa Mesa. 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 Costa Mesa. Reviews last updated 13 July 2026.
Read reviews from past customers who have flown Porter Airlines,Air Transat, andUnited Airlines from Toronto to Costa Mesa. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
443 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.5

Comfort

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Porter Airlines
8.0
Very good
443 reviews
Porter Airlines
8.0
Very good
443 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.5

Comfort

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Air Transat
7.8
Good
564 reviews
Porter Airlines
8.0
Very good
443 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.5

Comfort

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
United Airlines
7.4
Good
9,985 reviews
Porter Airlines
8.0
Very good
443 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.5

Comfort

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
WestJet
7.2
Good
3,410 reviews
Porter Airlines
8.0
Very good
443 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.5

Comfort

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Air Canada
7.1
Good
11,334 reviews
Porter Airlines
8.0
Very good
443 reviews
Check prices

Entertainment

6.9

Boarding

8.2

Crew

8.6

Overall

8.0

Food

7.5

Comfort

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.

Related info for your journey

Find useful and relevant information for your journey from Toronto to Costa Mesa. 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 Toronto to Costa Mesa?

    There are many flights that can get you from Toronto to Costa Mesa in 5h 15m. Fly via Porter Airlines, WestJet, or United Airlines to get the fastest option. The distance from Toronto to Costa Mesa is about 3492 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Toronto to Costa Mesa one-way?

    One-way options have recently been found by users for as low as C$ 146 on WestJet. Other airlines that offer cheap prices include Porter Airlines from C$ 156 and Air Transat from C$ 181 one-way.

  • What are the most popular routes from Toronto to Costa Mesa?

    While some choose either Toronto Island - Los Angeles or Toronto Region of Waterloo Intl - Los Angeles, Toronto Pearson Intl - Los Angeles is the most popular route from Toronto to Costa Mesa.

  • What are the most reliable airlines from Toronto to Costa Mesa?

    Consider Porter Airlines (85%), American Airlines (85%) or Air Transat (85%) when booking your flight. These represent the most reliable airlines when flying from Toronto to Costa Mesa.

  • What are the cheapest flights from Toronto to Costa Mesa?

    On average you can expect to pay C$ 2,620 for a flight from Toronto to Costa Mesa. The cheapest flight overall is C$ 301 while the most popular route, (Toronto Pearson Intl - Los Angeles) is currently priced at C$ 419.

  • Can I find deals for flights from Toronto to Costa Mesa that include hotel bookings?

    Yes. In addition to deals on Toronto to Costa Mesa flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Toronto to Costa Mesa?

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

  • Can I find deals for business class flights from Toronto to Costa Mesa?

    Yes. Cheapflights offers flight deals from Toronto to Costa Mesa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Toronto to Costa Mesa

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Toronto to Costa Mesa

Discover the top 8 airlines that operate flights from Toronto to Costa Mesa. 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 629,999 searches. Data last updated 13 July 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 198AverageC$ 450FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 226AverageC$ 658FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapestC$ 234AverageC$ 596FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapestC$ 240AverageC$ 476FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Porter AirlinesCheapestC$ 267AverageC$ 498FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air TransatCheapestC$ 313AverageC$ 604FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
United AirlinesCheapestC$ 324AverageC$ 717FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
APG AirlinesCheapestC$ 625AverageC$ 626FlexibilityNo cancel feeOn-timeN/A
Search APG Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Toronto to Costa Mesa?

Cheapflights makes it easy to find Toronto to Costa Mesa flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Toronto to Costa Mesa?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Toronto to Costa Mesa.

Can Cheapflights find flights from Toronto to Costa Mesa with no change fees?

Yes! Cheapflights helps users easily find flights from Toronto to Costa Mesa with no change fees.

Can Cheapflights notify me if prices for flights from Toronto to Costa Mesa become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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