Cheap flights from Montreal to Costa Mesa from C$ 211
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 23/7. Fares are subject to change and may not be available on all flights or dates of travel.
Cheapflights Tip: The best prices from Montreal to Costa Mesa are usually found in May or April, booked 90 days in advance, depart on a Thursday or Wednesday and return on a Sunday
Cheap flight deals from Montreal to Costa Mesa
Keep the following information in mind while searching for Montreal to Costa Mesa flight deals. Data was last updated 12 June 2025.
Find flight deals from Montreal to Costa Mesa
Cheapest flights from Montreal to Costa MesaExplore 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 12 June 2025.
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 12 June 2025.
Cheapflights Fare Finder
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 12 June 2025.
Use the filters below to find and compare flights from Montreal to Costa Mesa that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
MontrealLos Angeles
YUL - LAX
YULLAX
Montreal Pierre Elliott Trudeau Intl
Thu 10/7
6:45 a.m.-1:00 p.m.
1 stop9h 15m
Los Angeles
Wed 16/7
2:00 p.m.-12:37 a.m.
1 stop7h 37m
MontrealLos Angeles
YUL - LAX
YULLAX
Montreal Pierre Elliott Trudeau Intl
Thu 7/8
8:10 a.m.-11:45 a.m.
1 stop30h 35m
Los Angeles
Mon 11/8
11:40 a.m.-12:43 a.m.
1 stop10h 03m
MontrealLos Angeles
YUL - LAX
YULLAX
Montreal Pierre Elliott Trudeau Intl
Wed 16/7
6:45 a.m.-1:00 p.m.
1 stop9h 15m
Los Angeles
Thu 7/8
7:00 a.m.-12:37 a.m.
2 stops14h 37m
MontrealLos Angeles
YUL - LAX
YULLAX
Montreal Pierre Elliott Trudeau Intl
Wed 25/6
6:45 p.m.-9:35 p.m.
Nonstop5h 50m
Los Angeles
Sat 5/7
10:30 p.m.-6:59 a.m.
Nonstop5h 29m
MontrealLos Angeles
YUL - LAX
YULLAX
Montreal Pierre Elliott Trudeau Intl
Wed 25/6
6:20 a.m.-2:55 p.m.
1 stop11h 35m
Los Angeles
Fri 4/7
12:15 p.m.-11:54 p.m.
1 stop8h 39m
MontrealLos Angeles
YUL - LAX
YULLAX
Montreal Pierre Elliott Trudeau Intl
Sat 6/9
4:55 p.m.-10:55 p.m.
1 stop9h 00m
Los Angeles
Tue 9/9
12:56 a.m.-3:00 p.m.
2 stops11h 04m
MontrealLos Angeles
YUL - LAX
YULLAX
Montreal Pierre Elliott Trudeau Intl
Sat 19/7
7:47 a.m.-6:31 p.m.
1 stop13h 44m
Los Angeles
Tue 22/7
6:05 a.m.-4:40 p.m.
1 stop7h 35m
MontrealLos Angeles
YUL - LAX
YULLAX
Montreal Pierre Elliott Trudeau Intl
Wed 23/7
6:45 a.m.-11:45 a.m.
2 stops32h 00m
MontrealLos Angeles
YUL - LAX
YULLAX
Montreal Pierre Elliott Trudeau Intl
Tue 15/7
7:55 p.m.-1:00 p.m.
2 stops20h 05m
MontrealLos Angeles
YUL - LAX
YULLAX
Montreal Pierre Elliott Trudeau Intl
Wed 23/7
8:05 a.m.-11:02 a.m.
Nonstop5h 57m
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.
Cheapflights Insights
Everything you need to know about your flight from Montreal to Costa Mesa
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 9 June 2025.
The best time to book flights from Montreal to Costa Mesa is 90 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$ 226). Flying from Montreal to Costa Mesa in July is currently the most expensive (average of C$ 306). 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 12 June 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 afternoons 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 12 June 2025.
The most flights from YMQ to CM3 are scheduled on a Wednesday (10 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 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 12 June 2025.
Read through reviews of airlines operating flights from Montreal to Costa Mesa, such as Porter Airlines, Delta and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
Crew
Overall
Comfort
Boarding
Food
Reviews
Mary,Jun 2025
FLL - YYZ
Entertainment
Crew
Overall
Comfort
Boarding
Food
Reviews
Mary,Jun 2025
FLL - YYZ
Entertainment
Crew
Overall
Comfort
Boarding
Food
Reviews
Mary,Jun 2025
FLL - YYZ
Entertainment
Crew
Overall
Comfort
Boarding
Food
Reviews
Mary,Jun 2025
FLL - YYZ
Entertainment
Crew
Overall
Comfort
Boarding
Food
Reviews
Mary,Jun 2025
FLL - YYZ
Entertainment
Crew
Overall
Comfort
Boarding
Food
Reviews
Mary,Jun 2025
FLL - YYZ
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.
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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.
Top 7 airlines flying from Montreal to Costa Mesa
Discover the top 7 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 12 June 2025.
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How does Cheapflights help users find flights from Montreal to Costa Mesa?
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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.