Cheap flights from Seattle to Denver

One-way fares from $164 · SEA → DEN · prices found by travellers in the last 48 hours

Compare all dates Denver → Seattle
Cheapest fare
$164

Frontier Airlines · Sat, Nov 14

Cheapest month
November

from $164

Direct flights
Yes

Frontier Airlines

Flight time
2h 48m

1,640 km

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Cheapest month to fly from Seattle to Denver

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 Cheapest $164

Cheapest dates in November 2026

The lowest fares we've seen for each day, cheapest first.

Frontier Airlines
Depart16:27 Sat, Nov 14SEA → DEN 2h 48m · Direct
$164one way, per person
View deal
Frontier Airlines
Depart19:48 Sun, Nov 15SEA → DEN 5h 22m · 1 stop
$165one way, per person
View deal
Frontier Airlines
Depart21:13 Mon, Nov 16SEA → DEN 4h 51m · 1 stop
$165one way, per person
View deal
Frontier Airlines
Depart10:50 Thu, Nov 12SEA → DEN 5h 09m · 1 stop
$176one way, per person
View deal
See every date in November 2026 →

Plan the rest of your trip to Denver

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in DenverCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in DenverTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in DenverPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in DenverCompare rental cars from major brands on EconomyBookings Compare cars →

About flights from Seattle to Denver

Seattle (SEA) and Denver (DEN) are about 1,640 km apart. Direct flights take around 2h 48m, and recent direct fares were with Frontier Airlines. Over the next few months, one-way fares start from $164, 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 Seattle to Denver?

The cheapest one-way fare we've seen recently is $164 with Frontier Airlines, departing Saturday, November 14, 2026.

What is the cheapest month to fly from Seattle to Denver?

November 2026 currently has the lowest fares, from $164 one way.

Are there direct flights from Seattle to Denver?

Yes. Recent direct fares were with Frontier Airlines.

How long is the flight from Seattle to Denver?

A direct flight takes about 2h 48m. Seattle and Denver are around 1,640 km apart.

Which airlines fly from Seattle to Denver?

Recent fares on this route were with Frontier Airlines.

More cheap flights from Seattle

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