Cheap flights from Seattle to Denver

Seattle-Tacoma
SEA
Denver
DEN

Flight deals from Seattle to Denver

Below you can see the best deals on flights Seattle — Denver for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 9 September, from $31.

Top 10 cheap flights from Seattle to Denver

F9
$ 31

Seattle — Denver

16:27—20:21
9 Sep 2026
2 h 54 m
Direct flight
F9
$ 79

Seattle — Denver

16:27—20:21
11 Sep 2026
2 h 54 m
Direct flight
F9
$ 82

Seattle — Denver

16:27—20:21
15 Sep 2026
2 h 54 m
Direct flight
F9
$ 82

Seattle — Denver

19:06—22:58
5 Sep 2026
2 h 52 m
Direct flight
F9
$ 82

Seattle — Denver

14:37—18:33
5 Sep 2026
2 h 56 m
Direct flight
F9
$ 84

Seattle — Denver

16:27—20:21
10 Sep 2026
2 h 54 m
Direct flight
F9
$ 104

Seattle — Denver

19:06—22:58
8 Sep 2026
2 h 52 m
Direct flight
F9
F9
$ 109

Seattle — Denver

20:15—15:07
15 Sep 2026
17 h 52 m
1 stop
F9
$ 109

Seattle — Denver

19:06—22:58
6 Sep 2026
2 h 52 m
Direct flight
F9
$ 109

Seattle — Denver

19:06—22:58
4 Sep 2026
2 h 52 m
Direct flight

Prices were found in the last 72 hours and may change — check the exact price when you continue.

About the Seattle — Denver flight

Looking for cheap flights from Seattle to Denver? Compare fares from different airlines, check the flight schedule and travel time — and book your Seattle — Denver ticket online at the best price.

The route has direct flights — around 366 flights per week, flights are operated by Alaska Airlines, Hawaiian Airlines, United Airlines, Delta and 5 more airlines, a nonstop flight takes about 2 h 43 min, the distance between the cities is around 1,644 km.

Planning your trip? You may find our Denver travel guide, how to get from the airport into town and Denver weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $31Min. price
SeptemberCheapest
JunePeak season
YesDirect flights
1,644 kmDistance
2 h 43 minTravel time
9Airlines
366 / wkFlights

Flight schedule from Seattle to Denver

The table shows direct flights from Seattle to Denver on the selected date. The flight takes approximately 2 h 43 min. Regular flights are operated by Alaska Airlines, Hawaiian Airlines, United Airlines and Delta. Departures from Seattle-Tacoma International Airport and Paine Field airports, arrivals at Denver International Airport and Centennial Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 16 Aug 2026

Flight ticket prices by day: Seattle — Denver

Below is a calendar of the lowest flight ticket prices for Seattle — Denver by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $31 in September, and the most expensive are around $162 in June. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from Seattle to Denver by month. Tickets are usually cheapest in January (around $102) and priciest in July (about $172) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$102lowMay$158highSep$126medium
Feb$107lowJun$167highOct$121low
Mar$130mediumJul$172highNov$116low
Apr$135mediumAug$149mediumDec$163high

Some values are estimated based on seasonality.

When to fly

Weather in Denver: it is warmest in July (up to 31 °C on average) and coolest in January (around 6 °C). The driest month is November.

Tickets are usually cheapest in September and most expensive in June. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · Denver

Dry and wet days · Denver

Wind speed and direction · Denver

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How to get the best deal on a Seattle — Denver ticket

  • Book ahead: fares for Seattle — Denver are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • Seattle is served by more than one airport — compare fares and travel time to each before you book.
  • The cheapest month to fly to Denver is usually September — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the Seattle — Denver route are operated by 9 airlines; Alaska Airlines runs the most flights (around 25% of all flights). Compare carriers, flight shares and schedules below.

  • Alaska AirlinesAS
    31x/week
    WebsiteFleet: 31545M pax/year
    • Direct flight SEA → DEN31x/week
      Duration
      2h 49m
      Days
      MTWTFSS
    25.1%Open →
  • Hawaiian AirlinesHA
    29x/week
    WebsiteFleet: 7511M pax/year
    • Direct flight SEA → DEN29x/week
      Duration
      2h 50m
      Days
      MTWTFSS
    23.5%
  • United AirlinesUA
    27x/week
    WebsiteFleet: 956165M pax/year
    • Direct flight SEA → DEN27x/week
      Duration
      2h 50m
      Days
      MTWTFSS
    22.1%Open →
  • DeltaDL
    12x/week
    WebsiteFleet: 986190M pax/year
    • Direct flight SEA → DEN12x/week
      Duration
      2h 49m
      Days
      MTWTFSS
    9.8%Open →
  • Southwest AirlinesWN
    11x/week
    WebsiteFleet: 817140M pax/year
    • Direct flight SEA → DEN11x/week
      Duration
      2h 42m
      Days
      MTWTFSS
    9.3%Open →
  • Frontier AirlinesF9
    10x/week
    WebsiteFleet: 15329M pax/year
    • Direct flight SEA → DEN9x/week
      Duration
      2h 57m
      Days
      MTWTFSS
    • Direct flight PAE → DEN1x/week
    7.9%Open →
  • IcelandairFI
    2x/week
    WebsiteFleet: 524.7M pax/year
    • Direct flight SEA → DEN2x/week
      Duration
      2h 47m
      Days
      MTWTFSS
    1.4%Open →
  • Japan AirlinesJL
    1x/week
    WebsiteFleet: 14540M pax/year
    • Direct flight SEA → DEN1x/week
    0.5%Open →
  • Qatar AirwaysQR
    1x/week
    WebsiteFleet: 26640M pax/year
    • Direct flight SEA → DEN1x/week
    0.3%Open →

Cities and airports on the Seattle — Denver route

Flights Seattle — Denver depart from Seattle-Tacoma International Airport and Paine Field and arrive at Denver International Airport and Centennial Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Seattle

SEA
United States
About the cityHow to get thereWeatherAll about the country United States
Arrival

Denver

DEN
United States
About the cityHow to get thereWeatherAll about the country United States
Departure airports
Arrival airports

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Frequently asked questions about the Seattle — Denver flight

How long is the flight from Seattle to Denver?

A nonstop Seattle — Denver flight takes about 2 h 43 min — the distance between the cities is around 1,644 km.

How far is it from Seattle to Denver?

The distance from Seattle to Denver is about 1,644 km, which a nonstop flight covers in around 2 h 43 min.

Are there direct flights from Seattle to Denver?

Yes, there are nonstop flights Seattle — Denver — around 366 flights per week.

Which airlines fly from Seattle to Denver?

Airlines operating Seattle — Denver include Alaska Airlines, Hawaiian Airlines, United Airlines, Delta, Southwest Airlines. See the full list with schedules in the "Airlines" section on this page.

Which airports do Seattle — Denver flights use?

Flights from Seattle depart from Seattle-Tacoma International Airport, Paine Field, and arrive at Denver International Airport, Centennial Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Seattle to Denver?

The price of a Seattle — Denver ticket depends on your travel date, season and demand: it is usually cheapest to fly in September, and most expensive in June. Tickets typically cost between $31 and $162. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Seattle — Denver?

Flights Seattle — Denver are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is September. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Seattle to Denver?

To catch a low fare Seattle — Denver, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually September.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from Seattle

See all
Los AngelesAnchorageVancouverSan FranciscoPhoenixSan DiegoSan JoseSpokanePortlandSanta AnaNew York CityBoiseChicagoDallasSalt Lake CitySacramentoLas VegasRedmondBostonAtlantaHonoluluWashington, D.C.MinneapolisPascoAustinBurbankFairbanksJuneauEugeneNashvilleHoustonCalgaryBozemanDetroitPalm SpringsMissoulaMedfordRenoOrlandoVictoria

Where else you can fly from Denver

See all
Los AngelesPhoenixNew York CitySalt Lake CitySan DiegoDallasLas VegasMinneapolisChicagoHoustonAtlantaPortlandAustinColorado SpringsSan FranciscoWashington, D.C.OrlandoKansas CityNashvilleSanta AnaDetroitOklahoma CityAspenRapid CityMiamiPhiladelphiaSacramentoAlbuquerqueSt. LouisBostonWichitaSan JoseBoiseMidlandCharlotteGrand JunctionOmahaSan AntonioTulsaLincoln

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