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Cheap flights from Montreal to Costa Mesa from C$ 226

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 22/2. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — LAX
10 Feb — 17 Feb1
1 adult

The best prices from Montreal to Costa Mesa are usually found in September or October, booked 61 days in advance, depart on a Thursday or Wednesday and return on a Saturday

Cheap flight deals from Montreal to Costa Mesa

Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) to Costa Mesa (CM3). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 5 February 2025.

Round-trip from

C$ 349

One-way from

C$ 235

Popular in

December

Cheapest in

September

Average price

C$ 561
Air Canada
  • Air Canada
  • 10/3-13/3
  • Nonstop
  • 10h 58m total
  • Montreal to Costa Mesa
Search Deals
Porter Airlines
  • Porter Airlines
  • 23/2
  • 1 total stop
  • 8h 37m total
  • Montreal to Costa Mesa
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 29 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
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Find flight deals from Montreal to Costa Mesa

Cheapest flights from Montreal to Costa Mesa
Explore the most affordable flight options available from Montreal to Costa Mesa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 February 2025.

Mon 10/35:15 p.m.YUL - LAX
Nonstop6h 05mAir Canada
Thu 13/38:30 a.m.LAX - YUL
Nonstop4h 53mAir Canada
Deal found 4/2C$ 349
Tue 29/47:00 a.m.YUL - LAX
2 stops14h 10mWestJet
Thu 15/56:55 p.m.LAX - YUL
1 stop19h 24mWestJet
Deal found 5/2C$ 350
Fri 21/22:35 p.m.YUL - LAX
1 stop8h 37mPorter Airlines
Thu 27/21:25 p.m.LAX - YUL
1 stop8h 10mPorter Airlines
Deal found 4/2C$ 352
Sat 22/210:25 a.m.YUL - LAX
2 stops15h 04mMultiple Airlines
Mon 24/28:09 p.m.LAX - YUL
1 stop17h 26mMultiple Airlines
Deal found 4/2C$ 353
Wed 12/31:35 p.m.YUL - LAX
1 stop12h 35mUnited Airlines
Thu 13/38:30 a.m.LAX - YUL
Nonstop4h 53mUnited Airlines
Deal found 4/2C$ 362
Tue 11/35:15 p.m.YUL - LAX
Nonstop6h 05mLufthansa
Fri 14/38:30 a.m.LAX - YUL
Nonstop4h 53mLufthansa
Deal found 4/2C$ 366
Thu 15/57:30 a.m.YUL - LAX
1 stop10h 23mDelta
Fri 30/59:35 a.m.LAX - YUL
1 stop10h 33mDelta
Deal found 4/2C$ 405
Sun 9/32:15 p.m.YUL - LAX
1 stop11h 55mAmerican Airlines
Mon 31/312:31 a.m.LAX - YUL
1 stop11h 54mAmerican Airlines
Deal found 4/2C$ 476

Find flights from Montreal to Costa Mesa within your budget

Customize your flight search to find flights from Montreal 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 5 February 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

MontrealLos Angeles

YUL - LAX

YULLAX

Montreal Pierre Elliott Trudeau Intl

Tue 29/4

7:00 a.m.-6:10 p.m.

2 stops14h 10m

Los Angeles

Thu 15/5

6:55 p.m.-5:19 p.m.

1 stop19h 24m

C$ 350

MontrealLos Angeles

YUL - LAX

YULLAX

Montreal Pierre Elliott Trudeau Intl

Thu 6/3

7:30 a.m.-4:06 p.m.

1 stop11h 36m

Los Angeles

Wed 12/3

8:30 a.m.-4:23 p.m.

Nonstop4h 53m

C$ 353

MontrealLos Angeles

YUL - LAX

YULLAX

Montreal Pierre Elliott Trudeau Intl

Fri 21/2

2:35 p.m.-8:12 p.m.

1 stop8h 37m

Los Angeles

Sat 1/3

7:35 a.m.-7:00 p.m.

1 stop8h 25m

C$ 358

MontrealLos Angeles

YUL - LAX

YULLAX

Montreal Pierre Elliott Trudeau Intl

Wed 12/3

1:35 p.m.-11:10 p.m.

1 stop12h 35m

Los Angeles

Thu 13/3

8:30 a.m.-4:23 p.m.

Nonstop4h 53m

C$ 362

MontrealLos Angeles

YUL - LAX

YULLAX

Montreal Pierre Elliott Trudeau Intl

Tue 25/3

3:55 p.m.-11:37 a.m.

2 stops22h 42m

Los Angeles

Mon 31/3

4:29 p.m.-2:55 p.m.

1 stop19h 26m

C$ 382

MontrealLos Angeles

YUL - LAX

YULLAX

Montreal Pierre Elliott Trudeau Intl

Sun 6/4

6:05 a.m.-11:18 a.m.

1 stop8h 13m

Los Angeles

Wed 9/4

11:49 a.m.-11:38 p.m.

1 stop8h 49m

C$ 399

MontrealLos Angeles

YUL - LAX

YULLAX

Montreal Pierre Elliott Trudeau Intl

Fri 21/2

2:20 p.m.-9:08 p.m.

1 stop9h 48m

Los Angeles

Mon 24/2

12:55 a.m.-12:20 p.m.

1 stop8h 25m

C$ 409

MontrealLos Angeles

YUL - LAX

YULLAX

Montreal Pierre Elliott Trudeau Intl

Sat 22/2

5:35 p.m.-9:32 p.m.

1 stop30h 57m

C$ 226

MontrealLos Angeles

YUL - LAX

YULLAX

Montreal Pierre Elliott Trudeau Intl

Wed 5/3

5:15 p.m.-8:20 p.m.

Nonstop6h 05m

C$ 230

MontrealLos Angeles

YUL - LAX

YULLAX

Montreal Pierre Elliott Trudeau Intl

Wed 5/3

7:30 a.m.-4:06 p.m.

1 stop11h 36m

C$ 232

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/2

Showing 1-10 of 16 results
1
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Best time to book a flight from Montreal to Costa Mesa

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

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

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

Use this chart to determine the optimal time to book a round-trip flight from Montreal to Costa Mesa. Price data was last updated on 31 January 2025.

The best time to book flights from Montreal 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 Montreal to Costa Mesa?

Currently, September is the cheapest month in which you can book a flight from Montreal to Costa Mesa (average of C$ 234). Flying from Montreal 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 YMQ to CM3?

Find hourly flight availability from Montreal 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 5 February 2025.

When flying from Montreal 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 Montreal to Costa Mesa?

Use this chart to determine the cheapest time to fly round-trip from Montreal to Costa Mesa. Price data was last updated on 16 December 2024.

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

Weekly flight availability from Montreal to Costa Mesa

Explore weekly flight availability from Montreal 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 5 February 2025.

The most flights from YMQ to CM3 are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 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 5 February 2025.
Read through reviews of airlines operating flights from Montreal to Costa Mesa, such as Alaska Airlines, Delta and Porter Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,687 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Alaska Airlines
8.0
Very good
9,687 reviews
Alaska Airlines
8.0
Very good
9,687 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Delta
8.0
Very good
8,397 reviews
Alaska Airlines
8.0
Very good
9,687 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Porter Airlines
7.9
Good
277 reviews
Alaska Airlines
8.0
Very good
9,687 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

United Airlines
7.4
Good
8,885 reviews
Alaska Airlines
8.0
Very good
9,687 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,687 reviews
Check prices

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Related info for your journey

Find useful and relevant information for your journey from Montreal 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 Montreal to Costa Mesa one-way?

    One-way options have recently been found by users for as low as C$ 235 on Porter Airlines. Other airlines that offer cheap prices include United Airlines from C$ 236 and Air Canada from C$ 268 one-way.

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

    Before booking your flight to Costa Mesa from Montreal, check out the most reliable airlines to get you to your destination on time: Air New Zealand (78%), Brussels Airlines (77%), United Airlines( 76%).

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

    Looking for the cheapest flight from Montreal to Costa Mesa? While on average our users pay C$ 598, our data indicates the cheapest price to be C$ 287. The most popular route (Montreal Pierre Elliott Trudeau Intl - Los Angeles), is priced around C$ 332.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Montreal 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 Montreal to Costa Mesa?

    Currently, September is the cheapest month in which you can book a flight from Montreal to Costa Mesa (average of C$ 234). Flying from Montreal 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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Alternative routes for Montreal to Costa Mesa

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Montreal to Costa Mesa

Discover the top 9 airlines that operate flights from Montreal 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 5 February 2025.
AirlineCheapestAverageFlexibilityOn-time
Lynx AirCheapestC$ 267AverageC$ 422FlexibilityNo cancel feeOn-timeN/A
Search Lynx Air flights
Porter AirlinesCheapestC$ 323AverageC$ 511FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
WestJetCheapestC$ 366AverageC$ 590FlexibilityNo cancel feeOn-time60%
Search WestJet flights
DeltaCheapestC$ 382AverageC$ 573FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 399AverageC$ 675FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 410AverageC$ 746FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 428AverageC$ 664FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air TransatCheapestC$ 526AverageC$ 579FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
WestJet EncoreCheapestC$ 867AverageC$ 955FlexibilityNo 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 Montreal to Costa Mesa?

Cheapflights helps you search for flights from Montreal to Costa Mesa via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Montreal to Costa Mesa for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Montreal to Costa Mesa, users can toggle the no change fees filter when performing a flight search.

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

Not ready to book yet? You can track prices for flights from Montreal to Costa Mesa on Cheapflights with our Price Alert feature and get notified when better prices are available.

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