The Seattle–Denver route
Seattle-Tacoma International (SEA) to Denver International (DEN) covers about 1,023 miles. Nonstop SEA–DEN is often on the schedule, about 2.5 hours airborne over 1,023 miles. This page is a US-market guide in USD — not a ticket and not a live calendar.
For SEA–DEN we show about $99 on the low end and around $195 as a more typical one-way economy total, USD, last reviewed August 2026. A $99 one-way is a sale-shaped guide, not a fare you can screenshot and demand. Taxes, bags, and seats change what you pay on the seller site.
Search SEA to DEN on Azurovia, compare airline-direct and travel-site totals on the same flights, then finish with the seller. We do not ticket. Keep their confirmation for changes.
Distance and time SEA–DEN
Great-circle distance SEA–DEN is about 1,023 miles. Block time on a nonstop is typically near 2.5 hours; wind, routing, and which runway you use still move the clock. Connections on the same city pair add layover time on top of that flying.
Denver is about 1 hour ahead of Seattle on standard time (America/Los_Angeles vs America/Denver). Arrival clocks on DEN are local. That matters more on this pair than on a same-zone hop.
When SEA–DEN has a nonstop, that is usually the cleanest product. One-stop options still appear — they are worth opening only if the USD total is materially lower after you count the extra ground time.
Airports for Seattle to Denver
Both ends are in the United States: Seattle-Tacoma International (SEA) to Denver International (DEN). This is not an international itinerary, so the usual domestic bag and ID rules apply at the seller. Alternate metro airports can still beat this pair on price.
SEA is the only origin code we list in this metro. DEN is the arrival code we treat as primary for Denver. A cheaper nearby airport only wins if the transfer still fits your plan. Search with “include nearby airports” when you want those codes in one results list.
Airport pages: SEA Seattle-Tacoma International · DEN Denver International
City hubs: Flights from Seattle · Flights to Denver
Bags on SEA–DEN
US domestic Seattle–Denver inventory often includes basic economy. Cabin and checked bags may be extra — the result cards say so when we have that fact. A cheaper headline fare can lose once you add a carry-on.
Airlines often shown
Frontier is among the names that commonly appear on SEA–DEN, alongside Alaska Airlines, American Airlines, Delta. That is who often operates or sells this city pair in our catalog, not a daily guarantee. Live search is the inventory that exists for your dates.
When people fly
On Seattle–Denver, demand is often softer in Jan and Feb, with Sep and Oct also worth checking. US holidays still reprice this pair. Move a day on the results strip before you assume the first date you typed is the cheapest.
Save this route
We’ll email you if live fares on this city pair drop. Search with dates for a specific trip.
Questions about this city pair
How long is the flight from Seattle to Denver?
Nonstop SEA–DEN is typically about 2.5 hours over roughly 1,023 miles. Connections take longer; compare total trip time on the results page.
When are Seattle to Denver fares often lower?
Demand is usually softer in Jan and Feb on this route, but live prices move daily. Search a few nearby dates rather than assuming a season is always cheapest.
Which airlines fly Seattle to Denver?
Sellers commonly show Frontier, Alaska Airlines, American Airlines, Delta on this city pair. The set on any given day depends on schedule and which travel sites return a fare.
What do Seattle–Denver tickets usually cost?
Guide one-way economy totals cluster around $195, with sales near $99, in USD. Those are not a quote — live search is the price that matters.
Is SEA–DEN the only airport pair for this trip?
This guide uses SEA and DEN as the primary codes. If a seller offers another airport, it will show on live results when you include nearby airports.
Do I book Seattle–Denver with Azurovia?
No. Azurovia is a US metasearch. You compare airline and travel-site totals here, then complete the ticket with the seller you choose.