Cheap flights from Seattle to Denver (SEA - DEN)

SEA — DEN
Jan 31 — Feb 71

The best prices from Seattle/Tacoma Intl to Denver Intl are usually found in January or February, booked 59 days in advance, depart on a Saturday or Wednesday and return on a Wednesday

How to find the cheapest flight from Seattle (SEA) to Denver (DEN)

All the information you need to plan the best SEA to DEN flight in 2023: compare Seattle to Denver flight prices with the expected peak season, weather and rainfall in Denver.

SEA - DEN

Price

$167 - $384

DEN

Temperature

30.2 - 73.4 °F

DEN

Rainfall

0.5 - 2.3 inches

Popular inJuneHigh demand for flights, 33% potential price rise
Cheapest inJanuaryBest time to find cheap flights, 35% potential price drop
Round-trip from$167From Seattle/Tacoma Intl to Denver Intl
One-way from$70One-way flight from Seattle/Tacoma Intl to Denver Intl

What is the cheapest day to fly round-trip from Seattle to Denver?

Sunday flights are found to be more expensive to fly from Seattle to Denver. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Denver.

How far in advance should I book a flight from Seattle to Denver?

Travelers have found it’s best to book a flight 51 days in advance to save up to 11% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 51 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Seattle to Denver 1-2 weeks in advance for as low as $268, or $291 for flights within the next 24 hours.

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

The best pricing can be found in the month of January. Prices to Denver from Seattle average $257. You can even find prices in January for less than $257, as users have found deals to Denver from as low as $104. The month of June appears to be one of the more expensive times to travel to Denver from Seattle. Flying in the targeted month can save you up to 49%.

When is the cheapest time to fly from Seattle to Denver (SEA - DEN)?

A simple way to save on the total cost of your ticket is to fly from Seattle to Denver in the afternoon. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight in the morning.

Cheap flights from Seattle to Denver in January, February 2023

The best prices found for SEA to DEN flights for January, February
Feb 28 - Mar 7
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
$56

Frontier

Pick Dates

Deal found 1/24

Feb 28 - Mar 8
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 06m
$60

Frontier

Pick Dates

Deal found 1/25

Feb 21 - Mar 1
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
$65

Frontier

Pick Dates

Deal found 1/23

Seattle to Denver 2023 flight deals

Cheap flights to Denver from Seattle found for this year
Feb 28 - Mar 7
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
$56

Frontier

Pick Dates

Deal found 1/24

Mar 4 - Mar 7
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
$60

Frontier

Pick Dates

Deal found 1/24

Feb 21 - Mar 1
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
$65

Frontier

Pick Dates

Deal found 1/23

Cheap Frontier flights from Seattle to Denver

Feb 28 - Mar 7
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
$56

Frontier

Pick Dates

Deal found 1/24

Mar 4 - Mar 7
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
$60

Frontier

Pick Dates

Deal found 1/24

Feb 21 - Mar 1
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
$65

Frontier

Pick Dates

Deal found 1/23

  • One of the most popular airlines traveling from Seattle to Denver is Frontier. Flights from Frontier traveling this route typically cost $247.95 RT. This price is typically 23% cheaper than other airlines that offer Seattle to Denver flights. When booking this route, the cheapest RT price found was $93. Seattle/Tacoma Intl Airport is the most common Seattle airport to take off from when flying to Denver. Denver Intl Airport is the most popular arrival airport in Denver. When flying from Seattle to Denver, Frontier flights are 29% more popular than any other airline flying that same route.

Cheap Spirit Airlines flights from Seattle to Denver

Feb 28 - Mar 7
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

1 stop

13h 58m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

1 stop

6h 52m
$84

Spirit Airlines

Pick Dates

Deal found 1/24

Feb 12 - Feb 13
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

1 stop

5h 26m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

1 stop

13h 18m
$94

Spirit Airlines

Pick Dates

Deal found 1/25

Feb 9 - Feb 13
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

1 stop

7h 53m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

1 stop

13h 18m
$97

Spirit Airlines

Pick Dates

Deal found 1/24

  • If you’re traveling from Seattle to Denver, one of the more common airlines traveling that route is Spirit Airlines. Seattle to Denver flights are typically 30% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $276.20 RT. The cheapest Spirit Airlines flight found for this route was $97. When traveling from Seattle to Denver on Spirit Airlines, the most popular airport to depart from is Seattle/Tacoma Intl Airport and the most popular airport to arrive at is Denver Intl Airport. When flying from Seattle to Denver, Spirit Airlines flights are 27% more popular than any other airline flying that same route.

Non-stop flights to Denver from Seattle

Save time with Seattle to Denver direct flight deals
Feb 28 - Mar 7
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
$56

Frontier

Pick Dates

Deal found 1/24

Mar 4 - Mar 7
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
$60

Frontier

Pick Dates

Deal found 1/24

Feb 21 - Mar 1
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
$65

Frontier

Pick Dates

Deal found 1/23

Last minute flights from Seattle to Denver

Late deals on return flights to Denver from Seattle, departing today and this week
Feb 5 - Feb 7
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
$71

Frontier

Pick Dates

Deal found 1/23

Feb 5 - Feb 9
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
$88

Frontier

Pick Dates

Deal found 1/24

Feb 2 - Feb 7
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
$90

Frontier

Pick Dates

Deal found 1/25

One-way flights to Denver from Seattle

The cheapest one-way flights from Seattle to Denver
Feb 25
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
$31

Frontier

Pick Dates

Deal found 1/23

Feb 22
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
$33

Frontier

Pick Dates

Deal found 1/23

Feb 21
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
$36

Frontier

Pick Dates

Deal found 1/23

Reviews of Airlines Servicing Denver

Alaska Airlines
8.0
Very good
1,360 reviews

Food

7.2

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.1

Crew

8.6

Reviews

1 / 10

Alaska is a great airline! Can’t beat the value for the price. I had zero issues of any kind.

Alaska Airlines
8.0
Very good
1,360 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Food

7.2

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.1

Crew

8.6

Reviews

1 / 10

Alaska is a great airline! Can’t beat the value for the price. I had zero issues of any kind.

Delta
7.9
Good
1,998 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Food

7.2

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.1

Crew

8.6

Reviews

1 / 10

Alaska is a great airline! Can’t beat the value for the price. I had zero issues of any kind.

Spirit Airlines
6.9
Okay
708 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Food

7.2

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.1

Crew

8.6

Reviews

1 / 10

Alaska is a great airline! Can’t beat the value for the price. I had zero issues of any kind.

Frontier
6.1
Okay
536 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Food

7.2

Overall

8.0

Comfort

8.0

Boarding

8.2

Entertainment

7.1

Crew

8.6

Reviews

1 / 10

Alaska is a great airline! Can’t beat the value for the price. I had zero issues of any kind.

Related info for your journey

Useful info, stats and facts about Seattle to Denver flights.

What airports do I use to fly from Seattle to Denver?

If you wish to fly to Denver from Seattle, then you need to book flights from Seattle/Tacoma Intl to Denver Intl. There are 25 flights from Seattle/Tacoma Intl (SEA) to Denver Intl (DEN) per day to choose from. Flights to Denver from Seattle/Tacoma Intl are available from 9 different airlines, which means you should have some options if you want to compare airfare deals. 2h 34m is how long a nonstop flight from Seattle to Denver Intl typically takes.

Which airlines flying from Seattle/Tacoma Intl to Denver Intl have flexible cancellations due to COVID-19?

United Airlines, Alaska Airlines, and Delta are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Seattle to Denver for under $100 on Cheapflights?

Yes, there are multiple flights from Seattle to Denver for under $100. The cheapest flight booked recently is on Frontier for just $56, but on average you can expect to pay $72.

Are there nonstop flights from Seattle to Denver for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from Seattle to Denver under $100. A good price for a nonstop flight from Seattle to Denver is less than $75.

Are there last-minute flights available from Seattle to Denver for under $100?

There are currently 20+ open flights from Seattle to Denver within the next 7 days for less than $100.

What days are nonstop flights available from Seattle to Denver?

Nonstop flights can be found on the following days: Sunday, Thursday, Friday, Saturday.

How popular is this Seattle to Denver flight route?

Within the past month, 162 users have taken a look at flights from Seattle/Tacoma Intl to Denver Intl.

How many flights depart from Seattle to Denver on average per day?

On average, you can expect to see 5 flights from Seattle to Denver a day.
Early Morning (Midnight to 6am) - 20% of flight departures
Evening (6pm - Midnight) - 80% of flight departures

How long is the flight from Seattle to Denver?

There are many flights that can get you from Seattle to Denver in 2h 39m. Fly via Frontier or Spirit Airlines to get the fastest option. The distance between Seattle and Denver is about 1028 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines flying from Seattle to Denver round-trip?

Currently priced at $56, Frontier will fly you from Seattle to Denver and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Spirit Airlines for as low as $84. These flights start at 78% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from Seattle to Denver one-way?

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $31. Users have also found prices from $47 and $74 on Spirit Airlines and Delta, respectively.

What are the most popular airlines that fly from Seattle to Denver?

When booking a flight from Seattle to Denver, you may want to consider flying on Undisclosed Carrier, Endeavor Airlines or American Airlines as they are the most popular for this route.

What are the most reliable airlines from Seattle to Denver?

No one likes to see their flight delayed. When booking a flight from Seattle to Denver consider choosing Delta (79%), Copa Airlines (77%) or United Airlines (77%) as they are the most reliable in getting you off to your destination on time.

What are the cheapest flights from Seattle to Denver?

Looking at all options, your cheapest flight can be booked for $49. While the most popular route (Seattle/Tacoma Intl - Denver Intl) can be booked for $72 on average our data indicates $436 when flying from Seattle to Denver.

Alternative routes for Seattle to Denver

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from Seattle to Denver

The chart below displays the airlines Cheapflights users traveling from Seattle to Denver choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$12Average$22FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
FrontierCheapest$70Average$198FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
Alaska AirlinesCheapest$93Average$248FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search Alaska Airlines flights
DeltaCheapest$97Average$276FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
Spirit AirlinesCheapest$109Average$234FlexibilityNo cancel feeOn-time65%COVID-19 safety
Search Spirit Airlines flights
United AirlinesCheapest$111Average$307FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
American AirlinesCheapest$229Average$377FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights

Hourly flight availability from Seattle to Denver

See what time of day planes typically take off from Seattle to Denver
14%of flight departuresEarly morningMidnight to 6 am
28%of flight departuresMorning6 am to noon
28%of flight departuresAfternoonNoon to 6 pm
30%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Seattle to Denver

See how many times per day planes take to the skies headed from Seattle to Denver
Sunday22daily flights
Monday28daily flights
Tuesday21daily flights
Wednesday24daily flights
Thursday38daily flights
Friday26daily flights
Saturday18daily flights
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