Seattle

$59+ Cheap flights from Denver to Seattle (DEN - SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SEA
Dec 28 — Jan 41
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The best prices from Denver Intl to Seattle/Tacoma Intl are usually found in April or February, booked 25 days in advance, depart on a Saturday or Wednesday and return on a Wednesday

Cheap flight deals from Denver to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 23, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$95
(Kiwi.com)

One-way from

$59
(Cheapflightsfares)

Popular in

December

Cheapest in

April

Average price

$222
Provider with most accurate pricing for Denver Intl-Seattle/Tacoma Intl flight deals.
Provider most trusted by Cheapflights users for Denver Intl-Seattle/Tacoma Intl flights.
From Denver Intl to Seattle/Tacoma Intl
One-way flight from Denver Intl to Seattle/Tacoma Intl
High demand for flights, 8% potential price rise
Best time to find cheap flights, 2% potential price drop
Average for round-trip flights in December 2024

Find flight deals from Denver to Seattle

Cheapest flights from Denver to Seattle
Explore the most affordable flight options available from Denver to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2024.

This Kiwi.com deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2511:00 amDEN - SEA
Nonstop3h 10mFrontier
Mon 1/68:20 pmSEA - DEN
1 stop10h 31mFrontier
Deal found 12/22$160
This Travelocity deal was found by Cheapflights users on 12/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/286:00 amDEN - SEA
Nonstop3h 14mMultiple Airlines
Mon 1/69:36 pmSEA - DEN
Nonstop2h 45mMultiple Airlines
Deal found 12/23$283
This Delta deal was found by Cheapflights users on 12/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/296:29 pmDEN - SEA
1 stop6h 57mDelta
Tue 1/73:15 pmSEA - DEN
Nonstop2h 42mDelta
Deal found 12/23$312
This Alaska Airlines deal was found by Cheapflights users on 12/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2511:53 amDEN - SEA
1 stop5h 43mAlaska Airlines
Tue 1/77:45 pmSEA - DEN
Nonstop2h 44mAlaska Airlines
Deal found 12/23$331
This United Airlines deal was found by Cheapflights users on 12/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/316:00 amDEN - SEA
1 stop6h 30mUnited Airlines
Sun 1/512:30 pmSEA - DEN
Nonstop2h 42mUnited Airlines
Deal found 12/23$362
This Southwest deal was found by Cheapflights users on 12/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/234:55 pmDEN - SEA
2 stops7h 35mSouthwest
Thu 1/24:45 pmSEA - DEN
1 stop6h 20mSouthwest
Deal found 12/23$381

Find flights from Denver to Seattle within your budget

Customize your flight search to find flights from Denver to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 2/12

10:30 am-12:36 pm

Nonstop3h 06m

Seattle/Tacoma Intl

Thu 2/13

10:25 am-11:07 pm

1 stop11h 42m

$95

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 1/22

10:29 pm-9:40 am

1 stop12h 11m

Seattle/Tacoma Intl

Sat 1/25

12:00 pm-3:49 pm

Nonstop2h 49m

$153

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Tue 2/18

6:25 am-8:39 am

Nonstop3h 14m

Seattle/Tacoma Intl

Sat 2/22

8:35 pm-12:17 am

Nonstop2h 42m

$157

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Tue 2/18

7:00 am-9:16 am

Nonstop3h 16m

Seattle/Tacoma Intl

Mon 2/24

6:42 am-1:54 pm

1 stop6h 12m

$181

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Thu 1/30

11:24 am-5:06 pm

1 stop6h 42m

Seattle/Tacoma Intl

Wed 2/5

6:10 am-3:19 pm

1 stop8h 09m

$201

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Mon 1/20

6:00 am-11:20 am

1 stop6h 20m

Seattle/Tacoma Intl

Mon 1/27

3:25 pm-11:59 pm

1 stop7h 34m

$202

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Thu 2/27

8:50 am-3:50 pm

2 stops8h 00m

Seattle/Tacoma Intl

Fri 2/28

9:40 am-6:20 pm

1 stop7h 40m

$261

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 1/22

10:29 pm-9:40 am

1 stop12h 11m

$59

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Tue 2/25

7:00 am-9:16 am

Nonstop3h 16m

$79

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Tue 2/18

6:00 am-11:12 am

1 stop6h 12m

$84

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/23

Showing 1-10 of 14 results
1
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Compare providers for flights from Denver to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Seattle in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy2 starsTrust Score*2 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
MytripPrice Accuracy3 starsTrust Score*3 stars
FlightsMojoPrice Accuracy-Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Denver-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Denver to Seattle flights

Find out what our experts recommend to make the most of your Denver to Seattle trip
Airlines
Frontier

Frontier's UpFront Plus seats guarantee an empty middle seat, offering more space.


Early check-in helps secure your place on overbooked flights, a common practice with Frontier.

Read more about Frontierby Marisa Garcia
Alaska Airlines

Alaska's Premium Class offers extra legroom and free cocktails, enhancing comfort.


Alaska Airlines' Wi-Fi is a flat fee, ideal for business travelers needing connectivity.

Delta

Delta offers free Wi-Fi for SkyMiles members on most domestic flights, enhancing in-flight connectivity.


Delta Comfort Plus provides extra legroom and earlier boarding, ideal for a more comfortable journey.

Read more about Deltaby Harriet Baskas
United Airlines

United's Economy Plus offers extra legroom, enhancing comfort on domestic routes.


United's MileagePlus program allows pooling miles, facilitating ticket purchases for family members.

Airports
DEN

Use the A Line train for a quick 37-minute ride from downtown Denver to DEN, avoiding traffic and parking hassles.

Read more about DENby Emily Zemler
SEA

Take the Link light rail from SEA to downtown Seattle in under 40 minutes for an affordable and convenient option.

Read more about SEAby Brandon Schultz
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Frontier

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Robert Schrader

Robert Schrader

Expert on Alaska Airlines

Robert Schrader

Robert Schrader

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Harriet Baskas

Harriet Baskas

Expert on Delta and United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Emily Zemler

Emily Zemler

Expert on DEN

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more
Brandon Schultz

Brandon Schultz

Expert on SEA

Brandon Schultz

Brandon Schultz

Brandon travels every week and makes friends with stray cats wherever he goes. Dogs, too... he once brought one home to the US from the Amalfi Coast. He’s written 6 books, visited 6 continents (still waiting on Antarctica), and would eat ice cream 6 times a day if he could. He lives in Brooklyn, New York, with his partner and three cats.

Read more

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.

Best time to book a flight from Denver to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Denver with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Denver to Seattle

Get recent, data-driven insights about flights from Denver to Seattle including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Denver to Seattle. Price data was last updated on December 20, 2024.

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.

What is the cheapest month to book a flight from Denver to Seattle?

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.

What is the cheapest time of day to fly from DEN to SEA?

Find hourly flight availability from Denver to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 23, 2024.

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 7% versus a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Denver to Seattle. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Denver to Seattle flight should consider departing on Friday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Denver to Seattle

Explore weekly flight availability from Denver to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 23, 2024.

The most flights from DEN to SEA are scheduled on a Sunday (45 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (16 on average).

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

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.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated December 23, 2024.
Read through reviews of airlines operating flights from Denver to Seattle, such as American Airlines, Frontier and Delta. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
4,780 reviews

Comfort

8.1

Entertainment

7.7

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.1
Very good
4,780 reviews
8.1
Very good
4,780 reviews

Comfort

8.1

Entertainment

7.7

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
9,549 reviews
8.1
Very good
4,780 reviews

Comfort

8.1

Entertainment

7.7

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
8,588 reviews
8.1
Very good
4,780 reviews

Comfort

8.1

Entertainment

7.7

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.4
Good
9,022 reviews
8.1
Very good
4,780 reviews

Comfort

8.1

Entertainment

7.7

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.2
Good
10,000 reviews
8.1
Very good
4,780 reviews

Comfort

8.1

Entertainment

7.7

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from Denver to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • 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 6 different airlines have flights from Denver Intl (DEN) to Seattle/Tacoma Intl (SEA) on a regular basis. There are 29 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 3h 01m.

  • How popular is this Denver to Seattle flight route?

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

    Frontier, at $95, was found to be the cheapest airline from Denver to Seattle.Alternate airlines to your destination round-trip include Delta and Alaska Airlines. Users have found that Frontier is 45% cheaper than the other options available to this destination.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $59. Users have also found prices from $79 and $84 on Delta and United Airlines, respectively.

  • 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: Hawaiian Airlines (90%), Frontier (90%), Air France( 90%).

  • What are the cheapest flights from Denver to Seattle?

    Looking at all options, your cheapest flight can be booked for $58. While the most popular route (Denver Intl - Seattle/Tacoma Intl) can be booked for $106 on average our data indicates $1,126 when flying from Denver to Seattle.

  • Can I find deals for flights from Denver to Seattle that include hotel bookings?

    Yes. In addition to deals on Denver to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Seattle.

  • Can I find deals for business class flights from Denver to Seattle?

    Yes. Cheapflights offers flight deals from Denver to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Denver to Seattle?

    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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Denver to Seattle

Discover the top 5 airlines that operate flights from Denver to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 23, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$55Average$128FlexibilityNo cancel feeOn-time62%
DeltaCheapest$88Average$218FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$118Average$208FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$124Average$262FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$136Average$292FlexibilityNo cancel feeOn-time69%
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