Allegiant AirDepart10:47
Thu, Nov 12IAG → SEA
10h 03m · 2 stops
$484one way, per person
View deal
- Cheapest fare
- $484
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 10h 03m
Allegiant Air · Thu, Nov 12
from $484
Usually 1+ stop
3,380 km
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Cheapest month to fly from Niagara Falls to Seattle
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
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About flights from Niagara Falls to Seattle
Niagara Falls (IAG) and Seattle (SEA) are about 3,380 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 10h 03m. Over the next few months, one-way fares start from $484, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Niagara Falls to Seattle?
The cheapest one-way fare we've seen recently is $484 with Allegiant Air, departing Thursday, November 12, 2026.
What is the cheapest month to fly from Niagara Falls to Seattle?
November 2026 currently has the lowest fares, from $484 one way.
Are there direct flights from Niagara Falls to Seattle?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Niagara Falls to Seattle?
The quickest journey we've seen takes about 10h 03m. Niagara Falls and Seattle are around 3,380 km apart.
Which airlines fly from Niagara Falls to Seattle?
Recent fares on this route were with Allegiant Air.
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