$54 Cheap Flights to St. Mary's

Flights to St. Mary's at a glance

Traveling to St. Mary's is a breeze with options from full-service and budget airlines. Compare flight durations to find the choice that aligns with your budget and schedule, setting you up to explore the city's renowned attractions and neighborhoods.

• Major airports near St. Mary's: Region of Waterloo International Airport (YKF), John C. Munro Hamilton International Airport (YHM), London International Airport (YXU)
• Closest airport to St. Mary's: London International Airport, YXU (around 16 miles)
• Flights per week: 140+ flights arriving across St. Mary's airports
• Number of airlines that fly to St. Mary's: around 5+ carriers

Popular airports near St. Mary's

St. Mary's is a lively city that caters to families, business travelers, and those seeking urban getaways. Visitors are drawn to its rich culture, beautiful beaches, family-friendly activities, and outdoor pursuits. The city is conveniently served by three major airports.

• Region of Waterloo International Airport (YKF): Situated in the Waterloo Regional Municipality of Ontario, this airport is approximately 40 miles from St. Mary's. It offers a variety of domestic and international flights, linking to about 5 domestic locations and 4 international spots. Notable airlines operating here include Flair Airlines, Air Canada, and WestJet.
• John C. Munro Hamilton International Airport (YHM): Found in Ontario, roughly 62 miles from St. Mary's, this airport caters to both domestic and international travelers, connecting to approximately 4 domestic cities and 2 international destinations. Key airlines serving this airport are Porter Airlines, WestJet, and Air Canada.
• London International Airport (YXU): Located in Ontario, around 16 miles from St. Mary's, this airport facilitates both domestic and international travel, with connections to about 2 domestic cities and 4 international destinations. Major carriers at this airport include Air Canada, WestJet, and Flair Airlines.

Top routes to St. Mary's

• Calgary (YYC) to St. Mary's (YXU/YHM/YKF), with one-way tickets available from around $55
• Vancouver (YVR) to St. Mary's (YXU/YHM/YKF), with one-way flights starting at around $55
• Orlando (MCO) to St. Mary's (YXU/YHM/YKF), with one-way airfare from around $30
• Halifax (YHZ) to St. Mary's (YHM/YKF), with one-way tickets available from around $50
• Los Angeles (LAX) to St. Mary's (YXU/YKF), with one-way flight options from around $80

Cheapest routes to St. Mary's

• Fort Lauderdale (FLL) to St. Mary's (YHM/YKF), with budget one-way fares from around $20
• Orlando (MCO) to St. Mary's (YXU/YHM/YKF), with low-cost one-way tickets from around $30
• Edmonton (YEG) to St. Mary's (YHM/YKF), with low one-way fares from around $45
• Halifax (YHZ) to St. Mary's (YHM/YKF), with low one-way fares from around $50
• Vancouver (YVR) to St. Mary's (YXU/YHM/YKF), with cheap one-way fares from around $55

*Flight times and fares vary by season and availability and are based on one-way routes

Top airlines with flights to St. Mary's

• Flair Airlines: Operating flights to London International Airport (YXU) and Region of Waterloo International Airport (YKF), Flair Airlines represents roughly 37% of St. Mary's arrivals. The typical one-way fare hovers around $110.
• Air Canada: This airline services London International Airport (YXU), John C. Munro Hamilton International Airport (YHM), and Region of Waterloo International Airport (YKF), contributing to about 25% of St. Mary's incoming flights. Average one-way fares are around $200.
• WestJet: Offering routes to London International Airport (YXU), John C. Munro Hamilton International Airport (YHM), and Region of Waterloo International Airport (YKF), WestJet accounts for close to 16% of arrivals to St. Mary's. The average one-way fare is approximately $180.
• Porter Airlines: Serving flights to John C. Munro Hamilton International Airport (YHM), Porter Airlines comprises about 15% of arrivals to St. Mary's. Passengers can expect an average one-way fare of around $180.
• Air Transat: Operating to John C. Munro Hamilton International Airport (YHM), Air Transat is responsible for roughly 5% of arrivals to St. Mary's. The average cost for a one-way ticket is about $250.

Best time to fly to St. Mary's

The most popular months for travelers to fly to St. Mary's are April, July, and August, when peak temperatures in St. Mary's can reach up to 69.8°F in July. If you prefer quieter travel, consider May, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 56.8°F. For better deals, February usually offers the lowest average one-way fare around $154, roughly 18% cheaper than the yearly average. Looking for additional cheaper months to fly? January offers an average one-way fare of around $159, making it a good option for flexible travelers.

Month	Temperature	Precipitation	Cloudiness	Demand	Average one-way Fare
January	23.0°F (-5.0°C)	Light Rain	Very Cloudy	Average	$159
February	23.2°F (-4.9°C)	Light Rain	Mostly Cloudy	Average	$154
March	32.9°F (0.5°C)	Light Rain	Mostly Cloudy	Average	$192
April	43.7°F (6.5°C)	Light Rain	Mostly Cloudy	High	$170
May	56.8°F (13.8°C)	Light Rain	Mostly Sunny	Low	$174
June	65.1°F (18.4°C)	Light Rain	Mostly Sunny	Average	$182
July	69.8°F (21.0°C)	Light Rain	Mostly Sunny	High	$210
August	68.5°F (20.3°C)	Light Rain	Mostly Sunny	High	$199
September	62.4°F (16.9°C)	Light Rain	Mostly Sunny	Average	$194
October	50.9°F (10.5°C)	Light Rain	Mostly Cloudy	Low	$208
November	38.8°F (3.8°C)	Light Rain	Mostly Cloudy	Low	$214
December	30.6°F (-0.8°C)	Light Rain	Mostly Cloudy	Average	$213

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Arriving in St. Mary's

St. Mary's welcomes travelers through its range of transport options based on price, convenience, and proximity. Here's how to reach St. Mary's efficiently:

• Public transportation: From Region of Waterloo International Airport, Kitchener Station, a train station, is located about 9.1 miles away by car, providing convenient access to rail services for your onward journey.
• Hotel transfer: Transfers offer a convenient way to reach your hotel in St. Mary's, with private rides that can be arranged in advance.
• Car rental: Renting a car in St. Mary's is a good option if you plan to explore and sightsee beyond the city. Browse cheap car rentals in St. Mary's on Expedia.
• Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.

Tips for short-haul flights to St. Mary's

For quick getaways, efficiency is key. Here is how to make your short-haul journey smoother:

• Pack light and skip checked bags—with budget airlines, traveling with just a carry-on is often more economical. Maximize space by using mini toiletries, wearing your heaviest clothing, and planning your outfits carefully. This approach also allows you to bypass the wait at baggage claim upon arrival.
• Bring your own entertainment—short-haul flights frequently lack in-flight entertainment. Download your favorite TV shows, movies, music, or podcasts beforehand, and consider bringing a book to keep yourself occupied. Remember to charge your devices fully before you board.
• Arrive at the airport in plenty of time—for both short and domestic flights, it’s advisable to get to the airport at least 1.5 to 2 hours prior to your departure, taking into account traffic and security lines.
• Bring your own snacks and water—pack some snacks and a refillable water bottle to stay hydrated and save money while at the airport.

Tips for long-haul flights to St. Mary's

Flying long-haul sometimes requires extra planning to ensure a comfortable journey:

• Select your seat in advance—for longer flights, choosing your seat is crucial for comfort. Full-service airlines often provide complimentary seat selection once online check-in begins, typically 24–48 hours prior to your flight. Some airlines allow seat selection even earlier than this.
• Arrive at the airport in plenty of time—aim to be at the airport at least 3 hours before departure for international flights to ensure you have enough time for check-in, security, and immigration procedures.
• Relax at the airport—if you find yourself with extra time, take the opportunity to explore the shops, grab a coffee, or unwind at your gate or in a departure lounge if you have access. Most airports offer free Wi-Fi for your convenience.
• Adjust to the new time zone mid-flight—begin to sync your body clock by changing your watch and adjusting your sleep schedule to align with your destination's time zone. Aim to sleep or stay awake during the flight according to the local time at your arrival destination to help minimize jet lag.