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: Tue Jun 13 2017 Return: Fri Jul 7 2017 Trip spans 25 days
WestJet
WestJet
YUL
4:00a
SEA
2:52p
10h 52m
2 stops
SEA
5:30a
YUL
3:26p
9h 56m
2 stops
Depart: Tue Jun 6 2017 Return: Mon Jun 12 2017 Trip spans 7 days
United
United
YUL
2:00a
SEA
10:19a
8h 19m
1 stop
SEA
6:30p
YUL
3:23a
8h 53m
1 stop
Depart: Mon Jun 26 2017 Return: Sun Jul 2 2017 Trip spans 7 days
Major Airline
Major Airline
YUL
11:00a
SEA
2:00a
15h 00m
2 stops
SEA
11:30p
YUL
1:30p
14h 00m
2 stops
Depart: Wed Nov 1 2017 Return: Sat Nov 4 2017 Trip spans 4 days
Delta
Delta
YUL
3:00a
SEA
1:19p
10h 19m
1 stop
SEA
8:55p
YUL
4:51a
8h 56m
2 stops
Depart: Tue Oct 10 2017 Return: Fri Oct 13 2017 Trip spans 4 days
American Airlines
American Airlines
YUL
1:35p
SEA
10:40p
9h 05m
1 stop
SEA
7:56a
YUL
3:26p
7h 30m
1 stop
Depart: Thu Jul 20 2017 Return: Sun Jul 23 2017 Trip spans 4 days
Air Canada
Air Canada
YUL
10:40a
SEA
8:49p
10h 09m
2 stops
SEA
5:25p
YUL
12:51a
7h 26m
1 stop
Depart: Sat Jun 10 2017 Return: Mon Jun 12 2017 Trip spans 3 days
United
United
YUL
10:30a
SEA
8:23p
9h 53m
1 stop
SEA
6:30p
YUL
3:23a
8h 53m
1 stop
Depart: Mon Jul 31 2017 Return: Wed Aug 9 2017 Trip spans 10 days
Alaska Airlines
Alaska Airlines
YUL
8:15a
SEA
5:12p
8h 57m
1 stop
SEA
8:45p
YUL
4:31a
7h 46m
1 stop
Depart: Wed Jun 14 2017 Return: Fri Jul 7 2017 Trip spans 24 days
WestJet
WestJet
YUL
3:25p
SEA
6:00a
14h 35m
1 stop
SEA
5:30a
YUL
3:26p
9h 56m
2 stops
Depart: Thu Sep 7 2017 Return: Sun Sep 10 2017 Trip spans 4 days
Major Airline
Major Airline
YUL
1:00a
SEA
12:50p
11h 50m
2 stops
SEA
11:40p
YUL
10:14a
10h 34m
2 stops
Depart: Thu Jun 15 2017 Return: Fri Jul 7 2017 Trip spans 23 days
WestJet
WestJet
YUL
4:00a
SEA
2:52p
10h 52m
1 stop
SEA
5:30a
YUL
3:26p
9h 56m
2 stops
Depart: Wed Jun 7 2017 Return: Mon Jun 12 2017 Trip spans 6 days
United
United
YUL
12:43p
SEA
12:13a
11h 30m
2 stops
SEA
6:30p
YUL
3:23a
8h 53m
1 stop
Depart: Mon Jun 12 2017 Return: Sun Jul 9 2017 Trip spans 28 days
Major Airline
Major Airline
YUL
11:50p
SEA
9:25a
9h 35m
1 stop
SEA
5:40a
YUL
8:15p
14h 35m
1 stop
Depart: Fri Sep 29 2017 Return: Mon Oct 2 2017 Trip spans 4 days
Delta
Delta
YUL
3:10p
SEA
10:47p
7h 37m
1 stop
SEA
6:45p
YUL
5:19a
10h 34m
2 stops
Depart: Sat Sep 23 2017 Return: Sat Sep 30 2017 Trip spans 8 days
WestJet
WestJet
YUL
3:50a
SEA
1:00p
9h 10m
1 stop
SEA
6:40p
YUL
9:17a
14h 37m
1 stop
Depart: Tue Jun 20 2017 Return: Sat Jul 22 2017 Trip spans 33 days
Major Airline
Major Airline
YUL
10:45p
SEA
9:24a
10h 39m
1 stop
SEA
8:10a
YUL
8:05p
11h 55m
1 stop
Depart: Thu Jun 8 2017 Return: Mon Jun 12 2017 Trip spans 5 days
United
United
YUL
2:15p
SEA
11:57p
9h 42m
1 stop
SEA
2:15p
YUL
2:10a
11h 55m
2 stops
Depart: Fri Sep 15 2017 Return: Mon Sep 18 2017 Trip spans 4 days
Delta
Delta
YUL
3:10p
SEA
10:47p
7h 37m
1 stop
SEA
8:55p
YUL
9:10a
12h 15m
2 stops
Depart: Mon Jun 19 2017 Return: Sun Jul 23 2017 Trip spans 35 days
WestJet
WestJet
YUL
3:25p
SEA
6:00a
14h 35m
1 stop
SEA
6:40p
YUL
9:19a
14h 39m
1 stop
Depart: Sun Jun 4 2017 Return: Wed Jun 21 2017 Trip spans 18 days
Air Canada
Air Canada
YUL
3:35a
SEA
12:46p
9h 11m
1 stop
SEA
3:05p
YUL
12:11a
9h 06m
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
$330
Destination

Seattle
$330