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Cheap flights from Seattle to Denver

One-way from $87, found by travellers in the last 7 days. Aviasales checks the live price.

Departure
Return
Prices for nearby dates
Wed, Oct 21Any priceThu, Oct 22Any priceFri, Oct 23Any priceSat, Oct 24$87Sun, Oct 25Any priceMon, Oct 26Any priceTue, Oct 27Any priceWed, Oct 28Any price

Cheapest one-way tickets

Recent finds on different dates, for 1 adult. Baggage and fare rules are shown on Aviasales, where the price is checked live.

Cheapest
$87
Frontier Airlines, flight F9 3406Found 5 days ago, 1 adult
Check price on Aviasales
4:27pmSeattleSat, Oct 24
Travel time 2h 50m, nonstopSEADEN
8:17pmDenverSat, Oct 24
$104
Frontier Airlines, flight F9 3406Found 7 days ago, 1 adult
Check price on Aviasales
4:27pmSeattleSat, Nov 14
Travel time 2h 48m, nonstopSEADEN
8:15pmDenverSat, Nov 14
$131
Alaska Airlines, flight AS 725Found 4 days ago, 1 adult
Check price on Aviasales
7:38amSeattleMon, Nov 23
Travel time 4h 56m, 1 stopSEADEN
1:34pmDenverMon, Nov 23
$142
Frontier Airlines, flight F9 4204Found 4 days ago, 1 adult
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9:13pmSeattleThu, Nov 19
Travel time 4h 46m, 1 stopSEADEN
2:59amDenverFri, Nov 20
$151
Frontier Airlines, flight F9 4204Found 4 days ago, 1 adult
Check price on Aviasales
9:53pmSeattleTue, Nov 24
Travel time 4h 49m, 1 stopSEADEN
3:42amDenverWed, Nov 25

Round trips

The cheapest return tickets found recently, price for the whole trip.

Plan the rest of the trip

  • Mobile data in United StatesTravel eSIM from $4, installed before you fly.
    Compare plans
  • Getting from the airportTransfers and car hire in Denver, booked ahead at a fixed price.
    See options
  • Things to do in DenverPopular tours from $39 per person.
    See ideas
  • Flight delayed?Delayed or cancelled? See which passenger rights cover this route.
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Price calendar

The lowest one-way fare found for each day over the next 60 days. A dash means no recent fare; you can still pick that day.

October 2026

MoTuWeThFrSaSu1234–5–6–7–8$1779$17710–11–12–13–14–15–16–17–18–19–20–21–22–23–24$8725–26–27–28–29–30–31–

November 2026

MoTuWeThFrSaSu1–2–3–4–5–6–7–8–9–10–11–12–13–14$10415–16–17–18–19$14220–21–22–23$13124$15125$15626–27–28–29–30–

December 2026

MoTuWeThFrSaSu1–2–345678910111213141516171819202122232425262728293031
$104 or lessGreen: the cheapest fifth of fares on this route. Lowest in these 60 days: Oct 24, $87.

Lowest fares by month

In the fares found this week, October has the lowest: from $87 one-way, against $153 in December. Pick a month to see its cheapest date.

$0$100$200$87OctNovDecJanFebMarAprMayJunJulAugSep
Show as a table
MonthCheapest one-wayDateStops
October$87Sat, Oct 24Nonstop
November$104Sat, Nov 14Nonstop
December$153Fri, Dec 18Nonstop
January 2027—
February 2027—
March 2027—
April 2027—
May 2027—
June 2027—
July 2027—
August 2027—
September 2027—

Questions travellers ask

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

In the fares found this week, October has the lowest: from $87 one-way, against $153 in December.

Are there direct flights from Seattle to Denver?

Yes. Recent fares include nonstop flights with Frontier Airlines and United Airlines.

How long is the flight from Seattle to Denver?

A nonstop flight takes about 2h 37m. The distance is 1,022 mi.

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