Seattle to Montreal flights
Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for Seattle to Montreal is €192 with Porter Airlines Canada (checked on 21 Oct 2026).
Your next trip, last seen at €192
Below averagePorter Airlines Canada · 3 stops · One wayWhen to fly
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- Lowest observed
- €192, departing 14 Dec 2026 (Last checked: 21 Oct 2026)One-way fareCheck live prices for this route
- Airlines seen
- Air Canada, Alaska Airlines, Flair Airlines, Frontier Airlines, Porter Airlines Canada, United Airlines, WestJet (7)
- Typical journey time
- 13h 55m
About this route
Explore the fares we observed from Seattle to Montreal. Prices move often, so pick your dates to see the latest options.
- Route distance
- 3,675 km
- Typical journey time
- 13h 55m
- Seen on fares with a connection
- Air Canada, Alaska Airlines, Frontier Airlines, WestJet, Porter Airlines Canada, United Airlines
- Alternative airports
- BFI, YHU, YMX
Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Airport to city: straight-line distance
- King County International Airport - Boeing Field (BFI) → Seattle, city gazetteer reference point (47.6062, -122.3321): ≈ 9 km.
- Seattle–Tacoma International Airport (SEA) → Seattle, city gazetteer reference point (47.6062, -122.3321): ≈ 18 km.
- Montréal / Saint-Hubert Metropolitan Airport (YHU) → Montreal, city gazetteer reference point (45.5089, -73.5542): ≈ 11 km.
- Montreal / Pierre Elliott Trudeau International Airport (YUL) → Montreal, city gazetteer reference point (45.5089, -73.5542): ≈ 15 km.
- Montreal Mirabel International Airport (YMX) → Montreal, city gazetteer reference point (45.5089, -73.5542): ≈ 42 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest one-way fare we saw per airline
Cheapest airline from Seattle to Montreal: Porter Airlines Canada, from €192 (checked 21 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Porter Airlines Canada | €192Dec 14, 2026 | 6 |
| Frontier Airlines | €193Nov 14, 2026 | 13 |
| WestJet | €206Jan 17, 2027 | 9 |
| Alaska Airlines | €223Nov 17, 2026 | 22 |
| Air Canada | €240Nov 11, 2026 | 22 |
| United Airlines | €248Nov 4, 2026 | 5 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from Seattle to Montreal?
The lowest fare Routavio has observed is €192, found on 21 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Seattle to Montreal?
In our observations December 2026 is the cheapest month so far, at €192.
Are there direct flights from Seattle to Montreal?
Our data holds no non-stop flight from Seattle to Montreal. The fares on this page include at least one stop.
Which airlines fly from Seattle to Montreal?
Routavio has seen these carriers on the route: Air Canada, Alaska Airlines, Flair Airlines, Frontier Airlines, Porter Airlines Canada, United Airlines, WestJet (7).
How long does the flight from Seattle to Montreal take?
Across the 77 fares Routavio observed, the average journey time is 15h 59m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Seattle to Montreal fares were non-stop?
None of the 78 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.
Which airline has the lowest fare from Seattle to Montreal?
Cheapest airline from Seattle to Montreal: Porter Airlines Canada, from €192 (checked 21 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
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Recently observed fares. Prices may change.