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Cheap flights from Toronto to Costa Mesa from C$ 135

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 17/6. Fares are subject to change and may not be available on all flights or dates of travel.
YTO — LAX
20 Apr — 27 Apr1
1 adult

Cheapflights Tip: The best prices from Toronto to Costa Mesa are usually found in September or October, booked 61 days in advance, depart on a Wednesday or Thursday and return on a Monday

Cheap 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 15 April 2025.

Round-trip from

C$ 189

One-way from

C$ 135

Popular in

December

Cheapest in

September

Average price

C$ 387
WestJet
  • WestJet
  • 24/6-2/7
  • 3 total stops
  • 22h 33m total
  • Toronto to Costa Mesa
Search Deals
WestJet
  • WestJet
  • 17/6
  • 1 total stop
  • 9h 10m total
  • Toronto to Costa Mesa
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 60 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Toronto to Costa Mesa

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 15 April 2025.

Tue 24/66:30 a.m.YYZ - LAX
1 stop10h 42mWestJet
Wed 2/73:00 p.m.LAX - YYZ
2 stops11h 51mWestJet
Deal found 15/4C$ 189
Sun 22/610:40 a.m.YYZ - LAX
Nonstop5h 25mMultiple Airlines
Tue 1/712:35 p.m.LAX - YYZ
1 stop9h 09mMultiple Airlines
Deal found 15/4C$ 216
Sat 3/55:25 p.m.YTZ - LAX
1 stop8h 42mAir Canada
Wed 7/510:20 p.m.LAX - YTZ
1 stop8h 27mAir Canada
Deal found 15/4C$ 235
Wed 28/56:35 p.m.YYZ - LAX
Nonstop5h 24mAir Canada
Tue 3/610:30 p.m.LAX - YYZ
1 stop10h 09mAir Canada
Deal found 15/4C$ 238
Thu 17/76:00 a.m.YKF - LAX
1 stop11h 12mWestJet
Tue 22/711:40 a.m.LAX - YKF
1 stop10h 06mWestJet
Deal found 14/4C$ 249
Fri 30/54:30 p.m.YYZ - LAX
Nonstop5h 24mUnited Airlines
Sat 31/55:45 a.m.LAX - YYZ
1 stop14h 22mUnited Airlines
Deal found 15/4C$ 271
Tue 29/41:29 p.m.YYZ - LAX
2 stops11h 23mAmerican Airlines
Tue 29/412:59 a.m.LAX - YYZ
1 stop13h 21mAmerican Airlines
Deal found 14/4C$ 291
Mon 12/56:00 a.m.YHM - LAX
1 stop11h 12mWestJet
Sat 17/511:40 a.m.LAX - YHM
1 stop10h 01mWestJet
Deal found 14/4C$ 293
Mon 12/56:00 a.m.YKF - LAX
2 stops35h 06mMultiple Airlines
Sat 17/511:30 a.m.LAX - YKF
1 stop28h 55mMultiple Airlines
Deal found 14/4C$ 309
Sat 24/56:00 a.m.YHM - LAX
1 stop11h 12mMultiple Airlines
Thu 29/56:00 a.m.LAX - YHM
2 stops15h 41mMultiple Airlines
Deal found 15/4C$ 348
Sat 26/45:30 p.m.YYZ - LAX
Nonstop5h 35mPorter Airlines
Thu 1/54:05 p.m.LAX - YYZ
Nonstop4h 53mPorter Airlines
Deal found 15/4C$ 350
Thu 26/65:50 p.m.YYZ - LAX
1 stop9h 03mDelta
Sun 6/711:45 p.m.LAX - YYZ
1 stop7h 44mDelta
Deal found 15/4C$ 378

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 15 April 2025.
Use the filters below to find and compare flights from Toronto to Costa Mesa that are best for you.

Fly from

Toronto

Fly to

Costa Mesa

Route

Depart

Return

Price

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Tue 24/6

6:30 a.m.-2:12 p.m.

1 stop10h 42m

Los Angeles

Wed 2/7

3:00 p.m.-5:51 a.m.

2 stops11h 51m

C$ 189

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Sun 22/6

10:40 a.m.-1:05 p.m.

Nonstop5h 25m

Los Angeles

Fri 4/7

6:05 p.m.-6:52 a.m.

1 stop9h 47m

C$ 216

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Sat 24/5

6:35 p.m.-8:59 p.m.

Nonstop5h 24m

Los Angeles

Thu 29/5

9:50 p.m.-5:41 a.m.

Nonstop4h 51m

C$ 231

TorontoLos Angeles

YTZ - LAX

YTZLAX

Toronto Island

Sat 3/5

5:25 p.m.-11:07 p.m.

1 stop8h 42m

Los Angeles

Wed 7/5

10:20 p.m.-9:47 a.m.

1 stop8h 27m

C$ 235

TorontoLos Angeles

YKF - LAX

YKFLAX

Toronto Region of Waterloo Intl

Thu 17/7

6:00 a.m.-2:12 p.m.

1 stop11h 12m

Los Angeles

Tue 22/7

11:40 a.m.-12:46 a.m.

1 stop10h 06m

C$ 249

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Fri 30/5

12:15 p.m.-2:39 p.m.

Nonstop5h 24m

Los Angeles

Sun 8/6

5:22 a.m.-10:48 p.m.

1 stop14h 26m

C$ 271

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Tue 29/4

1:29 p.m.-9:52 p.m.

2 stops11h 23m

Los Angeles

Tue 29/4

12:59 a.m.-5:20 p.m.

1 stop13h 21m

C$ 291

HamiltonLos Angeles

YHM - LAX

YHMLAX

Hamilton

Mon 12/5

6:00 a.m.-2:12 p.m.

1 stop11h 12m

Los Angeles

Sat 17/5

11:40 a.m.-12:41 a.m.

1 stop10h 01m

C$ 293

TorontoLos Angeles

YKF - LAX

YKFLAX

Toronto Region of Waterloo Intl

Mon 26/5

6:00 a.m.-2:06 p.m.

3 stops35h 06m

Los Angeles

Tue 3/6

10:30 a.m.-12:46 a.m.

2 stops35h 16m

C$ 328

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Fri 25/4

9:45 a.m.-12:20 p.m.

Nonstop5h 35m

Los Angeles

Sun 27/4

7:35 a.m.-3:23 p.m.

Nonstop4h 48m

C$ 341

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/4

Showing 1-10 of 31 results
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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

How far ahead should I book a flight from Toronto to Costa Mesa?

Use this chart to determine the optimal time to book a round-trip flight from Toronto to Costa Mesa. Price data was last updated on 11 April 2025.

The best time to book flights from Toronto to Costa Mesa is 61 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Toronto to Costa Mesa?

Currently, September is the cheapest month in which you can book a flight from Toronto to Costa Mesa (average of C$ 230). Flying from Toronto to Costa Mesa in July is currently the most expensive (average of C$ 314). 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 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 15 April 2025.

When flying from Toronto to Costa Mesa, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 16 December 2024.

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

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 15 April 2025.

The most flights from YTO to CM3 are scheduled on a Monday (19 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (14 on average).

Rainfall in Costa Mesa by month

Plan your trip to Costa Mesa by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Costa Mesa ranges from 0.0 - 87.0 mm per month. February is typically the wettest month, when rainfall can reach 87.0 mm. July is typically the driest time to visit Costa Mesa when rainfall is around 0.0 mm.

Temperature in Costa Mesa by month

Plan your trip to Costa Mesa by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Costa Mesa, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).

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 15 April 2025.
See what other customers who have flown with Alaska Airlines, Porter Airlines and Delta from Toronto to Costa Mesa have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,871 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,871 reviews
Alaska Airlines
8.0
Very good
9,871 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Porter Airlines
8.0
Very good
281 reviews
Alaska Airlines
8.0
Very good
9,871 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,918 reviews
Alaska Airlines
8.0
Very good
9,871 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Air Transat
7.8
Good
385 reviews
Alaska Airlines
8.0
Very good
9,871 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,658 reviews
Alaska Airlines
8.0
Very good
9,871 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Entertainment

7.1

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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.

  • 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$ 135 on WestJet. Other airlines that offer cheap prices include Air Transat from C$ 168 and Air Canada from C$ 172 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 Brussels Airlines (100%), Porter Airlines (71%) or Air Transat (71%) 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$ 954 for a flight from Toronto to Costa Mesa. The cheapest flight overall is C$ 138 while the most popular route, (Toronto Pearson Intl - Los Angeles) is currently priced at C$ 200.

  • 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.

  • What is the cheapest month to book a flight from Toronto to Costa Mesa?

    Currently, September is the cheapest month in which you can book a flight from Toronto to Costa Mesa (average of C$ 230). Flying from Toronto to Costa Mesa in July is currently the most expensive (average of C$ 314). 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

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Top 7 airlines flying from Toronto to Costa Mesa

Discover the top 7 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 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 211AverageC$ 459FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Porter AirlinesCheapestC$ 229AverageC$ 448FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
American AirlinesCheapestC$ 232AverageC$ 587FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapestC$ 249AverageC$ 484FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 288AverageC$ 552FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air TransatCheapestC$ 295AverageC$ 514FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Air CanadaCheapestC$ 310AverageC$ 516FlexibilityNo cancel feeOn-time67%
Search Air Canada 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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