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Cheap Flights from St Louis to Seattle

1 deal shown · Prices in USD

Sorted by Best deal

Best deal sorts by cost per mile. Lowest price sorts by the total fare shown. On the main board, flights from your region may appear first when no region filter is selected.

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Every verified deal from St Louis to Seattle, ranked by how far the fare falls below its route baseline. Prices are checked against live availability.

On the board right now

  • Cabin mix: 1 Economy.
  • Best discount right now: 57% below the route baseline.
  • Most active airlines: Alaska.
  • 1 deal first seen in the last 24 hours.

Price history: St Louis to Seattle

Lowest observed fare on this corridor over the past year, from our signals database.

Frequently asked questions

How many flight deals from St Louis to Seattle are on Sparkflights right now?

There are 1 verified deals from St Louis to Seattle on the board right now. The list refreshes hourly.

What is the cheapest flight from St Louis to Seattle right now?

The lowest verified fare from St Louis to Seattle right now is $197. Prices are checked against live availability before listing.

What is the lowest price ever seen from St Louis to Seattle?

The lowest fare we've recorded from St Louis to Seattle is $127, based on 81 price observations over the past year.

Which airlines fly St Louis to Seattle?

Airlines with the most deals from St Louis to Seattle right now are Alaska.