$207 Cheap United flights from Seattle to Montreal (SEA to YUL)

Find The Best Day To Fly from Seattle to Montreal

Amazing United SEA to YUL Flight Deals

The cheapest flights to Pierre Elliott Trudeau Intl. found within the past 7 days were $415 round trip and $207 one way. Prices and availability subject to change. Additional terms may apply.

YUL From SEA Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
Grand Times Hotel Laval - Centropolis
Hotel Nelligan
Boxotel Montreal
Don't see what you're looking for?
See all available trips from Seattle - Tacoma Intl. to Pierre Elliott Trudeau Intl.
View all trips

Frequently asked questions

Can I catch a flight from Sea-Tac Airport to Montréal--Trudeau right now?
For information on any current Pierre Elliott Trudeau Intl. Airport (YUL) quarantine requirements and travel advice, go to our Covid-19 Travel Advisor. Look before you book your flight, so you don’t get caught out.
What terminal is United Airlines at Sea-Tac Airport?
While it’s hard to say exactly which terminal your United Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Montréal–Trudeau will take off from, we can tell you that you’ll probably be getting off the plane at the main terminal.
Are there United Airlines non-stop flights from SEA to YUL?
If you’re traveling with United Airlines from Sea-Tac Airport to Montreal Airport, you’ll have to make at least one stop. While you’re waiting for your connecting flight, use the time to grab a quick bite or stretch your legs.
How long is a United Airlines flight from SEA to YUL?
Throw that book in your carry-on you’ve been desperate to read. A flight from Seattle - Tacoma Intl. Airport (SEA) to Montreal Airport with United Airlines takes roughly 6 hours and 7 minutes. You’ll have sufficient time to completely lose yourself in the storyline.
What type of aircraft does United Airlines fly from SEA to YUL?
Tighten your seat belt and get acquainted with the Airbus A220-300. This airplane is typically used on the SEA to YUL route when flying with United Airlines.
How many direct and indirect flights does United Airlines fly from SEA to YUL?
You’ll have a choice of around 4 flights every day with United Airlines from Sea-Tac Airport to Montreal Airport.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Montréal–Trudeau, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best United flight from Seattle SEA to Montreal YUL 

To find the best deals on flights to Seattle from Montreal with United, just enter your travel dates, filter by United, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Seattle SEA to Montreal YUL with United 

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $415 to $467, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way United flights from Seattle SEA to Montreal YUL 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from Seattle to Montreal costs from $207. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Montreal YUL from  Seattle SEA with United 

To find a cheap United flight from Seattle SEA to Montreal YUL, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on United flights from Seattle SEA to Montreal YUL 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as August, or if you book a flight with a stopover. 

 

Find nonstop flights from Seattle SEA to Montreal YUL with United 

If you’re keen to be on Montreal soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for United flights from Seattle SEA to Montreal YUL 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Montreal YUL from  Seattle SEA with United on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

Travelers ❤️ these 🏨 after their flight to Montreal

Quality Inn & Suites P.E. Trudeau Airport
Quality Inn & Suites P.E. Trudeau Airport
2.5 out of 5
1010 ch. Herron Road, Dorval, QC
This hotel doesn't skimp on freebies - guests receive free full breakfast, free self parking, and a free airport shuttle. Traveling on business? Take advantage ...
7.4/10 Good! (3,361 reviews)
"Check out the dive bar next door"

Reviewed on May 9, 2025

Quality Inn & Suites P.E. Trudeau Airport
Sheraton Montreal Airport Hotel
Sheraton Montreal Airport Hotel
4 out of 5
555 Boulevard McMillan, Dorval, QC
This hotel features a restaurant, a 24-hour gym, and a bar/lounge. Traveling on business? Take advantage of the business center, free WiFi in public areas, and ...
8.8/10 Excellent! (2,166 reviews)
"Need to wipe the area around the sink in room 1113. Sit on the toilet and look to your right. Needs to be wiped. Also had one regular coffee and 3 decafs. The opposite would be appreciated if travellers are getting up 4 in the morning."

Reviewed on May 10, 2025

Sheraton Montreal Airport Hotel
Aloft Montreal Airport
Aloft Montreal Airport
4 out of 5
500 McMillan Ave., Dorval, QC
This hotel features an indoor pool and a 24-hour gym. Traveling on business? Take advantage of the 24-hour business center, free WiFi in public areas, and free ...
8.6/10 Excellent! (1,509 reviews)
"Accomodated my needs"

Reviewed on May 9, 2025

Aloft Montreal Airport
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.