Cheap flights from Denver to Seattle (DEN - SEA)

DEN — SEA
Feb 7 — Feb 141

The best prices from Denver Intl to Seattle/Tacoma Intl are usually found in January or February, booked 23 days in advance, depart on a Wednesday or Saturday and return on a Saturday

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

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

DEN - SEA

Price

$157 - $400

SEA

Temperature

41 - 66.2 °F

SEA

Rainfall

0.7 - 6.6 inches

Popular inJulyHigh demand for flights, 40% potential price rise
Cheapest inJanuaryBest time to find cheap flights, 34% potential price drop
Round-trip from$157From Denver Intl to Seattle/Tacoma Intl
One-way from$28One-way flight from Denver Intl to Seattle/Tacoma Intl

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

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 21% on your flight compared to booking on days when demand is much higher.

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

Find a great deal and save up to 20% by booking at least 21 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Denver to Seattle within the next two weeks, with the cheapest ticket starting at $258.

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

Our data shows that January tends to be the cheapest month to fly to Seattle from Denver. Users have commonly found prices around $239 for the month, but tickets can be as low as $104. Due to multiple factors, prepare for potentially higher prices in July.

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

When flying from Denver to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 15% versus a flight at noon.

Cheap flights from Denver to Seattle in February, March 2023

The best prices found for DEN to SEA flights for February, March
Mar 1 - Mar 8
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 43m
$55

Frontier

Pick Dates

Deal found 1/30

Mar 4 - Mar 7
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
$59

Frontier

Pick Dates

Deal found 1/31

Mar 1 - Mar 8
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 43m
$60

Frontier

Pick Dates

Deal found 1/30

Denver to Seattle 2023 flight deals

Cheap flights to Seattle from Denver found for this year
Mar 1 - Mar 8
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 43m
$55

Frontier

Pick Dates

Deal found 1/30

Mar 4 - Mar 7
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
$59

Frontier

Pick Dates

Deal found 1/31

Mar 1 - Mar 8
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 43m
$60

Frontier

Pick Dates

Deal found 1/30

Cheap Frontier flights from Denver to Seattle

Mar 1 - Mar 8
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 43m
$55

Frontier

Pick Dates

Deal found 1/30

Mar 4 - Mar 7
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
$59

Frontier

Pick Dates

Deal found 1/31

Mar 1 - Mar 8
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 43m
$60

Frontier

Pick Dates

Deal found 1/30

  • One of the most popular airlines traveling from Denver to Seattle is Frontier. Flights from Frontier traveling this route typically cost $237.19 RT. This price is typically 23% cheaper than other airlines that offer Denver to Seattle flights. When booking this route, the cheapest RT price found was $92. Denver Intl Airport is the most common Denver airport to take off from when flying to Seattle. Seattle/Tacoma Intl Airport is the most popular arrival airport in Seattle. When flying from Denver to Seattle, Frontier flights are 29% more popular than any other airline flying that same route.

Cheap Spirit Airlines flights from Denver to Seattle

Mar 7 - Mar 8
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

1 stop

11h 28m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

1 stop

6h 54m
$87

Spirit Airlines

Pick Dates

Deal found 2/1

Feb 28 - Mar 14
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

1 stop

11h 28m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

1 stop

6h 54m
$88

Spirit Airlines

Pick Dates

Deal found 1/31

Mar 1 - Mar 8
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

1 stop

11h 28m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

1 stop

6h 54m
$90

Spirit Airlines

Pick Dates

Deal found 1/31

  • If you’re traveling from Denver to Seattle, one of the more common airlines traveling that route is Spirit Airlines. Denver to Seattle flights are typically 35% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $248.60 RT. The cheapest Spirit Airlines flight found for this route was $94. When traveling from Denver to Seattle on Spirit Airlines, the most popular airport to depart from is Denver Intl Airport and the most popular airport to arrive at is Seattle/Tacoma Intl Airport. When flying from Denver to Seattle, Spirit Airlines flights are 27% more popular than any other airline flying that same route.

Non-stop flights to Seattle from Denver

Save time with Denver to Seattle direct flight deals
Mar 1 - Mar 8
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 43m
$55

Frontier

Pick Dates

Deal found 1/30

Mar 4 - Mar 7
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
$59

Frontier

Pick Dates

Deal found 1/31

Mar 1 - Mar 8
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 43m
$60

Frontier

Pick Dates

Deal found 1/30

Last minute flights from Denver to Seattle

Late deals on return flights to Seattle from Denver, departing today and this week
Feb 7 - Feb 14
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 39m
$90

Frontier

Pick Dates

Deal found 1/31

Feb 8 - Mar 8
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

1 stop

9h 18m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

Nonstop

2h 43m
$102

Multiple Airlines

Pick Dates

Deal found 1/31

Feb 7 - Feb 14
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
SEA

Seattle/Tacoma Intl

DEN

Denver Intl

1 stop

5h 26m
$103

Multiple Airlines

Pick Dates

Deal found 1/31

One-way flights to Seattle from Denver

The cheapest one-way flights from Denver to Seattle
Mar 8
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 06m
$28

Frontier

Pick Dates

Deal found 1/30

Feb 21
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
$30

Frontier

Pick Dates

Deal found 1/30

Mar 1
DEN

Denver Intl

SEA

Seattle/Tacoma Intl

Nonstop

3h 13m
$31

Frontier

Pick Dates

Deal found 1/30

Reviews of Airlines Servicing Seattle

Alaska Airlines
8.0
Very good
1,360 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.1

Food

7.2

Reviews

1 / 10

Maintenance delay, weather delays in DEN and once we arrived in SEA. 3 hour flight resulted in 6+ hours on the plane.

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

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.1

Food

7.2

Reviews

1 / 10

Maintenance delay, weather delays in DEN and once we arrived in SEA. 3 hour flight resulted in 6+ hours on the plane.

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

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.1

Food

7.2

Reviews

1 / 10

Maintenance delay, weather delays in DEN and once we arrived in SEA. 3 hour flight resulted in 6+ hours on the plane.

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

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.1

Food

7.2

Reviews

1 / 10

Maintenance delay, weather delays in DEN and once we arrived in SEA. 3 hour flight resulted in 6+ hours on the plane.

Related info for your journey

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

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

You will need to book a flight from Denver Intl to Seattle/Tacoma Intl if you want to fly from Denver to Seattle. At least 10 different airlines have flights from Denver Intl (DEN) to Seattle/Tacoma Intl (SEA) on a regular basis. There are 25 flights to Seattle from the Denver airport per day. If you manage to book one that is nonstop, then you can expect the flight time from DEN to SEA to be around 2h 50m.

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

Alaska Airlines, United 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 Denver to Seattle for under $100 on Cheapflights?

Yes, there are multiple flights from Denver to Seattle for under $100. The cheapest flight booked recently is on Frontier for just $55, but on average you can expect to pay $75.

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

Cheapflights has at least 20 direct flights from Denver to Seattle under $100. A good price for a nonstop flight from Denver to Seattle is less than $84.

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

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

What days are nonstop flights available from Denver to Seattle?

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

How popular is this Denver to Seattle flight route?

Within the past month, 335 users have taken a look at flights from Denver Intl to Seattle/Tacoma Intl.

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

18 flight departures from Denver to Seattle per day on average.
Early Morning (Midnight to 6am) - 44% of flight departures
Morning (6am - Noon) - 33% of flight departures
Afternoon (Noon - 6pm) - 6% of flight departures
Evening (6pm - Midnight) - 17% of flight departures

How long is the flight from Denver to Seattle?

Airlines like Frontier and Spirit Airlines fly from Denver to Seattle in about 3h 13m. The time it takes to get you to your destination can typically vary by up to 8h 15m. Airlines will cover a distance of 1028 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

Frontier, at $55, was found to be the cheapest airline from Denver to Seattle. An alternate airline flying to your destination would be Spirit Airlines. Users have found that Frontier is 77% cheaper than the other options available to this destination.

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

Before booking your flight from Denver to Seattle check out the most popular airlines for this route: Undisclosed Carrier, American Airlines or Alaska Airlines.

What are the most reliable airlines from Denver to Seattle?

Before booking your flight to Seattle from Denver, check out the most reliable airlines to get you to your destination on time: Air France (86%), KLM (78%), Korean Air( 78%).

What are the cheapest flights from Denver to Seattle?

Looking at all options, your cheapest flight can be booked for $71. While the most popular route (Denver Intl - Seattle/Tacoma Intl) can be booked for $72 on average our data indicates $1,766 when flying from Denver to Seattle.

Alternative routes for Denver to Seattle

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

Top 7 airlines flying from Denver to Seattle

The chart below displays the airlines Cheapflights users traveling from Denver to Seattle choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$12Average$23FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
FrontierCheapest$70Average$180FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
Alaska AirlinesCheapest$92Average$237FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search Alaska Airlines flights
DeltaCheapest$94Average$249FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
Spirit AirlinesCheapest$95Average$195FlexibilityNo cancel feeOn-time65%COVID-19 safety
Search Spirit Airlines flights
United AirlinesCheapest$99Average$282FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
American AirlinesCheapest$149Average$423FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights

Hourly flight availability from Denver to Seattle

See what time of day planes typically take off from Denver to Seattle
34%of flight departuresEarly morningMidnight to 6 am
27%of flight departuresMorning6 am to noon
27%of flight departuresAfternoonNoon to 6 pm
12%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Denver to Seattle

See how many times per day planes take to the skies headed from Denver to Seattle
Sunday23daily flights
Monday24daily flights
Tuesday26daily flights
Wednesday33daily flights
Thursday36daily flights
Friday21daily flights
Saturday14daily flights
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