Frontier offers extra comfort seats with 32” separation for a fee, ideal for taller passengers.
Frontier’s Board First option is available with a carry-on purchase or for elite members.
Most accurate provider | FlightHub 3 stars |
---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $104 (Alaska Airlines) |
One-way from | $78 (Cheapflightsfares) |
Popular in | December |
Cheapest in | April |
Average price | $186 |
Good round-trip deal | $223 or less |
Good one-way deal | $136 or less |
Fly from
Fly to
Route
Depart
Return
Price
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
Thu 3/20
12:44 pm-2:45 pm
Nonstop3h 01m
Seattle/Tacoma Intl
Tue 3/25
1:01 pm-4:40 pm
Nonstop2h 39m
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
Sat 4/5
1:23 pm-3:32 pm
Nonstop3h 09m
Seattle/Tacoma Intl
Sat 4/12
4:22 pm-8:10 pm
Nonstop2h 48m
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
Sat 3/29
7:00 am-9:07 am
Nonstop3h 07m
Seattle/Tacoma Intl
Sat 4/5
4:22 pm-8:10 pm
Nonstop2h 48m
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
Sat 4/12
6:10 am-8:22 am
Nonstop3h 12m
Seattle/Tacoma Intl
Sat 4/12
1:40 pm-5:28 pm
Nonstop2h 48m
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
Wed 4/23
7:00 am-9:00 am
Nonstop3h 00m
Seattle/Tacoma Intl
Wed 4/30
5:30 am-11:21 am
1 stop4h 51m
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
Thu 3/20
10:50 pm-12:50 am
Nonstop3h 00m
Seattle/Tacoma Intl
Tue 3/25
5:15 am-8:50 am
Nonstop2h 35m
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
Tue 3/25
5:15 am-11:50 am
1 stop7h 35m
Seattle/Tacoma Intl
Thu 3/27
5:14 am-8:56 am
Nonstop2h 42m
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
Thu 5/1
11:16 am-4:58 pm
1 stop6h 42m
Seattle/Tacoma Intl
Tue 5/6
3:00 pm-10:35 pm
1 stop6h 35m
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
Sun 4/20
9:46 am-11:56 am
Nonstop3h 10m
DenverSeattle
DEN - SEA
DENSEA
Denver Intl
Tue 4/1
5:50 pm-12:58 am
1 stop8h 08m
Provider | Price Accuracy | Trust Score* |
---|---|---|
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*2 stars | |
Price Accuracy3 stars | Trust Score*2 stars | |
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy- | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy- | Trust Score*3 stars |
Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
To ensure you get the cheapest price possible for a flight from Denver to Seattle, you should look to book at least 25 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Currently, January is the cheapest month in which you can book a flight from Denver to Seattle (average of $238). Flying from Denver to Seattle in July is currently the most expensive (average of $411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
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 afternoon, which can drop the price by up to 33% versus a flight at noon.
Travelers seeking maximum savings on their Denver to Seattle flight should consider departing on Thursday afternoons when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from DEN to SEA are scheduled on a Thursday (40 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (18 on average).
In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.
If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).
Boarding
Food
Entertainment
Crew
Comfort
Overall
Reviews
Merlyn,Feb 2025
LAX - SMF
Boarding
Food
Entertainment
Crew
Comfort
Overall
Reviews
Merlyn,Feb 2025
LAX - SMF
Boarding
Food
Entertainment
Crew
Comfort
Overall
Reviews
Merlyn,Feb 2025
LAX - SMF
Boarding
Food
Entertainment
Crew
Comfort
Overall
Reviews
Merlyn,Feb 2025
LAX - SMF
Boarding
Food
Entertainment
Crew
Comfort
Overall
Reviews
Merlyn,Feb 2025
LAX - SMF
Boarding
Food
Entertainment
Crew
Comfort
Overall
Reviews
Merlyn,Feb 2025
LAX - SMF
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$56 | Average$133 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$93 | Average$228 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$118 | Average$207 | FlexibilityNo cancel fee | On-time63% | |
Cheapest$134 | Average$267 | FlexibilityNo cancel fee | On-time75% | |
Cheapest$142 | Average$298 | FlexibilityNo cancel fee | On-time69% |