Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Toronto to Costa Mesa from C$ 190

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 23/4. Fares are subject to change and may not be available on all flights or dates of travel.
YTO — LAX
27 Feb — 6 Mar1
1 adult

The best prices from Toronto to Costa Mesa are usually found in September or October, booked 51 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 22 February 2025.

Round-trip from

C$ 307

One-way from

C$ 190

Popular in

December

Cheapest in

September

Average price

C$ 433
WestJet
  • WestJet
  • 4/6-9/6
  • 1 total stop
  • 14h 07m total
  • Toronto to Costa Mesa
Search Deals
23/4
  • 23/4
  • 1 total stop
  • 18h 54m total
  • Toronto to Costa Mesa
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 42 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 22 February 2025.

Wed 4/68:00 a.m.YYZ - LAX
1 stop9h 12mWestJet
Sun 15/611:10 p.m.LAX - YYZ
Nonstop4h 50mWestJet
Deal found 20/2C$ 307
Mon 17/35:30 p.m.YYZ - LAX
Nonstop5h 42mMultiple Airlines
Tue 25/31:24 p.m.LAX - YYZ
1 stop13h 31mMultiple Airlines
Deal found 21/2C$ 308
Fri 21/36:55 p.m.YYZ - LAX
Nonstop5h 42mPorter Airlines
Tue 1/47:00 a.m.LAX - YYZ
Nonstop4h 48mPorter Airlines
Deal found 20/2C$ 321
Sun 9/31:50 p.m.YTZ - LAX
2 stops25h 25mMultiple Airlines
Wed 12/35:45 a.m.LAX - YTZ
2 stops10h 08mMultiple Airlines
Deal found 21/2C$ 346
Sat 17/56:00 a.m.YKF - LAX
1 stop11h 12mWestJet
Sat 24/511:40 a.m.LAX - YKF
1 stop10h 06mWestJet
Deal found 21/2C$ 348
Thu 20/34:00 p.m.YYZ - LAX
Nonstop5h 32mAir Canada
Mon 24/34:45 p.m.LAX - YYZ
Nonstop4h 41mAir Canada
Deal found 21/2C$ 356
Wed 19/38:00 a.m.YYZ - LAX
Nonstop5h 32mUnited Airlines
Tue 25/36:00 a.m.LAX - YYZ
1 stop13h 37mUnited Airlines
Deal found 21/2C$ 361
Sat 17/56:00 a.m.YHM - LAX
1 stop11h 12mWestJet
Sat 24/511:40 a.m.LAX - YHM
1 stop10h 01mWestJet
Deal found 21/2C$ 361
Mon 10/31:05 p.m.YKF - LAX
2 stops35h 13mMultiple Airlines
Mon 17/310:45 a.m.LAX - YKF
1 stop17h 10mMultiple Airlines
Deal found 19/2C$ 363
Wed 19/34:44 p.m.YYZ - LAX
1 stop8h 08mAmerican Airlines
Tue 25/310:00 a.m.LAX - YYZ
2 stops9h 30mAmerican Airlines
Deal found 21/2C$ 369
Fri 25/43:59 p.m.YYZ - LAX
1 stop7h 01mDelta
Tue 6/511:40 p.m.LAX - YYZ
1 stop8h 52mDelta
Deal found 21/2C$ 380
Fri 28/312:25 p.m.YTZ - LAX
1 stop10h 55mAir Canada
Mon 31/38:30 a.m.LAX - YTZ
1 stop10h 05mAir Canada
Deal found 20/2C$ 397

Find flights from Toronto to Costa Mesa within your budget

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 22 February 2025.

Fly from

Toronto

Fly to

Costa Mesa

Route

Depart

Return

Price

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Wed 4/6

11:00 a.m.-5:17 p.m.

1 stop9h 17m

Los Angeles

Mon 9/6

11:10 p.m.-7:00 a.m.

Nonstop4h 50m

C$ 307

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Mon 17/3

5:30 p.m.-8:12 p.m.

Nonstop5h 42m

Los Angeles

Tue 25/3

1:24 p.m.-5:55 a.m.

1 stop13h 31m

C$ 308

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Sat 15/3

5:30 p.m.-8:12 p.m.

Nonstop5h 42m

Los Angeles

Mon 24/3

7:00 a.m.-2:48 p.m.

Nonstop4h 48m

C$ 319

TorontoLos Angeles

YKF - LAX

YKFLAX

Toronto Region of Waterloo Intl

Sat 17/5

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

1 stop11h 12m

Los Angeles

Sat 24/5

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

1 stop10h 06m

C$ 348

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Thu 20/3

4:00 p.m.-6:32 p.m.

Nonstop5h 32m

Los Angeles

Mon 24/3

4:45 p.m.-12:26 a.m.

Nonstop4h 41m

C$ 356

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Wed 19/3

8:00 a.m.-10:32 a.m.

Nonstop5h 32m

Los Angeles

Tue 25/3

6:00 a.m.-10:37 p.m.

1 stop13h 37m

C$ 361

HamiltonLos Angeles

YHM - LAX

YHMLAX

Hamilton

Sat 17/5

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

1 stop11h 12m

Los Angeles

Sat 24/5

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

1 stop10h 01m

C$ 361

TorontoLos Angeles

YKF - LAX

YKFLAX

Toronto Region of Waterloo Intl

Mon 10/3

1:05 p.m.-9:18 p.m.

2 stops35h 13m

Los Angeles

Mon 17/3

10:45 a.m.-6:55 a.m.

1 stop17h 10m

C$ 363

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Wed 19/3

4:30 p.m.-11:59 p.m.

2 stops10h 29m

Los Angeles

Wed 26/3

7:35 a.m.-6:25 p.m.

1 stop7h 50m

C$ 369

TorontoLos Angeles

YYZ - LAX

YYZLAX

Toronto Pearson Intl

Fri 25/4

3:59 p.m.-8:00 p.m.

1 stop7h 01m

Los Angeles

Tue 6/5

11:40 p.m.-11:32 a.m.

1 stop8h 52m

C$ 380

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/2

Showing 1-10 of 34 results
1
2
3
4

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.

Travel insights for flights from Toronto to Costa Mesa

Get recent, data-driven insights about flights from Toronto to Costa Mesa including ideal travel times, pricing trends, and more.

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 14 February 2025.

The best time to book flights from Toronto to Costa Mesa is 51 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$ 233). 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 22 February 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 22 February 2025.

The most flights from YTO to CM3 are scheduled on a Friday (20 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (10 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 22 February 2025.
See what other customers who have flown with Delta, Alaska Airlines and Porter Airlines 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.
Delta
8.0
Very good
8,212 reviews
Check prices

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,212 reviews
Delta
8.0
Very good
8,212 reviews
Check prices

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Alaska Airlines
8.0
Very good
9,700 reviews
Delta
8.0
Very good
8,212 reviews
Check prices

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Porter Airlines
7.9
Good
277 reviews
Delta
8.0
Very good
8,212 reviews
Check prices

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Transat
7.8
Good
382 reviews
Delta
8.0
Very good
8,212 reviews
Check prices

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.5
Good
1,566 reviews
Delta
8.0
Very good
8,212 reviews
Check prices

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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$ 192 on WestJet. Other airlines that offer cheap prices include Porter Airlines from C$ 194 and Air Canada from C$ 204 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 (66%), Air Transat (66%) or Austrian Airlines (59%) 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$ 1,414 for a flight from Toronto to Costa Mesa. The cheapest flight overall is C$ 187 while the most popular route, (Toronto Pearson Intl - Los Angeles) is currently priced at C$ 244.

  • 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$ 233). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Toronto to Costa Mesa

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to Las Vegas flights
Pearson Intl to Los Angeles flights
Pierre Elliott Trudeau Intl to Las Vegas flights
Pearson Intl to San Francisco flights
Toronto Island to Las Vegas flights
Pierre Elliott Trudeau Intl to Los Angeles flights
Pearson Intl to San Diego flights
Pierre Elliott Trudeau Intl to San Francisco flights
Pearson Intl to Ontario flights
Pearson Intl to Palm Springs flights
Toronto Island to Los Angeles flights
Region of Waterloo Intl to Las Vegas flights
Ottawa to Las Vegas flights
Pierre Elliott Trudeau Intl to San Diego flights
Pearson Intl to San Jose flights
Region of Waterloo Intl to San Francisco flights
Toronto Island to San Francisco flights
Hamilton to Las Vegas flights
Pierre Elliott Trudeau Intl to Ontario flights
Region of Waterloo Intl to Los Angeles flights
Hamilton to San Francisco flights
Ottawa to Los Angeles flights
Pearson Intl to Santa Ana flights
Pearson Intl to Sacramento flights
Hamilton to Los Angeles flights
Ottawa to San Francisco flights
Pearson Intl to Reno flights
Toronto Island to San Diego flights
Hamilton to Santa Ana flights
Pierre Elliott Trudeau Intl to San Jose flights
Hamilton to Palm Springs flights
Region of Waterloo Intl to Palm Springs flights
Pierre Elliott Trudeau Intl to Santa Ana flights
Ottawa to San Diego flights
Region of Waterloo Intl to San Diego flights
London to Las Vegas flights
Pearson Intl to Burbank flights
Hamilton to San Diego flights
Ottawa to Palm Springs flights
Pierre Elliott Trudeau Intl to Palm Springs flights
Pearson Intl to Oakland flights
Pearson Intl to Fresno flights
Pierre Elliott Trudeau Intl to Sacramento flights
Pierre Elliott Trudeau Intl to Burbank flights
Windsor to Las Vegas flights
Ottawa to San Jose flights
Thunder Bay to Las Vegas flights
Ottawa to Ontario flights
Region of Waterloo Intl to San Jose flights

Top 9 airlines flying from Toronto to Costa Mesa

Discover the top 9 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 22 February 2025.
AirlineCheapestAverageFlexibilityOn-time
Lynx AirCheapestC$ 203AverageC$ 331FlexibilityNo cancel feeOn-timeN/A
Search Lynx Air flights
WestJetCheapestC$ 228AverageC$ 497FlexibilityNo cancel feeOn-time60%
Search WestJet flights
DeltaCheapestC$ 254AverageC$ 566FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Porter AirlinesCheapestC$ 268AverageC$ 475FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
American AirlinesCheapestC$ 294AverageC$ 603FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 312AverageC$ 644FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 316AverageC$ 556FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air TransatCheapestC$ 498AverageC$ 531FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
WestJet EncoreCheapestC$ 550AverageC$ 891FlexibilityNo cancel feeOn-timeN/A
Search WestJet Encore 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!

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.