Find Cheap Flights from Montreal to Seattle

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
Compare vs. KAYAK all | none
Browse Origins:
Browse Destinations:

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Montreal to Seattle

(Round-trip)
Depart: Fri Dec 8 2017 Return: Sun Dec 10 2017 Trip spans 3 days
United
United
YUL
12:00a
SEA
10:06a
10h 06m
1 stop
SEA
12:00a
YUL
7:18a
7h 18m
1 stop
Depart: Thu Sep 28 2017 Return: Mon Oct 2 2017 Trip spans 5 days
Delta
Delta
YUL
12:00a
SEA
1:13p
13h 13m
2 stops
SEA
12:00a
YUL
9:11a
9h 11m
1 stop
Depart: Thu Oct 26 2017 Return: Sat Nov 4 2017 Trip spans 10 days
Multiple Airlines
Multiple Airlines
YUL
12:00a
SEA
8:25a
8h 25m
1 stop
SEA
12:00a
YUL
7:46a
7h 46m
1 stop
Depart: Thu Aug 24 2017 Return: Mon Aug 28 2017 Trip spans 5 days
American Airlines
American Airlines
YUL
12:00a
SEA
8:50p
20h 50m
1 stop
SEA
12:00a
YUL
3:09p
15h 09m
1 stop
Depart: Mon Sep 25 2017 Return: Sat Sep 30 2017 Trip spans 6 days
WestJet
WestJet
YUL
12:00a
SEA
10:19a
10h 19m
1 stop
SEA
12:00a
YUL
7:07a
7h 07m
1 stop
Depart: Wed Aug 30 2017 Return: Tue Sep 5 2017 Trip spans 7 days
Air Canada
Air Canada
YUL
12:00a
SEA
9:15a
9h 15m
1 stop
SEA
12:00a
YUL
9:06a
9h 06m
1 stop
Depart: Wed Sep 6 2017 Return: Sat Sep 9 2017 Trip spans 4 days
United
United
YUL
12:00a
SEA
1:18p
13h 18m
2 stops
SEA
12:00a
YUL
1:59p
13h 59m
2 stops
Depart: Wed Sep 20 2017 Return: Mon Sep 25 2017 Trip spans 6 days
Delta
Delta
YUL
12:00a
SEA
12:15p
12h 15m
2 stops
SEA
12:00a
YUL
10:59a
10h 59m
2 stops
Depart: Fri Oct 27 2017 Return: Sat Nov 4 2017 Trip spans 9 days
Multiple Airlines
Multiple Airlines
YUL
12:00a
SEA
8:17a
8h 17m
1 stop
SEA
12:00a
YUL
7:46a
7h 46m
1 stop
Depart: Sat Oct 28 2017 Return: Sat Nov 4 2017 Trip spans 8 days
Multiple Airlines
Multiple Airlines
YUL
12:00a
SEA
1:08p
13h 08m
2 stops
SEA
12:00a
YUL
7:46a
7h 46m
1 stop
Depart: Sat Sep 2 2017 Return: Tue Sep 5 2017 Trip spans 4 days
WestJet
WestJet
YUL
12:00a
SEA
9:38a
9h 38m
1 stop
SEA
12:00a
YUL
7:07a
7h 07m
1 stop
Depart: Sat Oct 14 2017 Return: Sun Oct 22 2017 Trip spans 9 days
Delta
Delta
YUL
12:00a
SEA
12:13p
12h 13m
2 stops
SEA
12:00a
YUL
10:12a
10h 12m
1 stop
Depart: Mon Sep 11 2017 Return: Mon Sep 18 2017 Trip spans 8 days
United
United
YUL
12:00a
SEA
9:42a
9h 42m
1 stop
SEA
12:00a
YUL
10:30a
10h 30m
2 stops
Depart: Wed Aug 30 2017 Return: Sun Sep 3 2017 Trip spans 5 days
Air Canada
Air Canada
YUL
12:00a
SEA
9:15a
9h 15m
1 stop
SEA
12:00a
YUL
11:41a
11h 41m
1 stop
Depart: Thu Oct 12 2017 Return: Mon Oct 23 2017 Trip spans 12 days
Multiple Airlines
Multiple Airlines
YUL
12:00a
SEA
8:25a
8h 25m
1 stop
SEA
12:00a
YUL
8:47a
8h 47m
1 stop
Depart: Fri Sep 29 2017 Return: Sun Oct 1 2017 Trip spans 3 days
Delta
Delta
YUL
12:00a
SEA
11:48a
11h 48m
2 stops
SEA
12:00a
YUL
9:11a
9h 11m
1 stop
Depart: Tue Sep 5 2017 Return: Tue Sep 26 2017 Trip spans 22 days
WestJet
WestJet
YUL
12:00a
SEA
9:19a
9h 19m
1 stop
SEA
12:00a
YUL
7:07a
7h 07m
1 stop
Depart: Fri Oct 27 2017 Return: Wed Nov 1 2017 Trip spans 6 days
Multiple Airlines
Multiple Airlines
YUL
12:00a
SEA
8:17a
8h 17m
1 stop
SEA
12:00a
YUL
3:21p
15h 21m
1 stop
Depart: Sat Sep 16 2017 Return: Sun Sep 24 2017 Trip spans 9 days
WestJet
WestJet
YUL
12:00a
SEA
9:38a
9h 38m
1 stop
SEA
12:00a
YUL
2:36p
14h 36m
1 stop
Depart: Thu Aug 17 2017 Return: Sun Aug 20 2017 Trip spans 4 days
United
United
YUL
12:00a
SEA
9:47a
9h 47m
2 stops
SEA
12:00a
YUL
7:39a
7h 39m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an email and someone from our team will get back to you promptly.

Airports
Origin

Montreal
$347
Destination

Seattle
$347