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Cheap flights from Denver to Seattle from £60

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 17/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SEA
22 abr — 29 abr1
1 adult

Cheapflights Tip: The best prices from Denver Intl to Seattle/Tacoma Intl are usually found in October or September, booked 88 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

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 17 abril 2025.

Round-trip from

£126

One-way from

£60

Popular in

July

Cheapest in

October

Average price

£156

Good round-trip deal

£134 or less
Southwest
  • Southwest
  • 20/5-21/5
  • 1 total stop
  • 10h 15m total
  • Denver to Seattle
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Southwest
  • Southwest
  • 17/5
  • Nonstop
  • 3h 00m total
  • Denver to Seattle
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Highest demand for flights based on searches. 5% potential increase in price (£6 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£2 potential savings vs. average return price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Denver Intl to Seattle/Tacoma Intl.
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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 17 abril 2025.

ter 20/517:15DEN - SEA
1 stop7h 35mSouthwest
qua 21/505:00SEA - DEN
Nonstop2h 40mSouthwest
Deal found 16/4£126
qua 14/514:39DEN - SEA
Nonstop2h 56mHawaiian Airlines
qua 21/520:23SEA - DEN
Nonstop2h 42mHawaiian Airlines
Deal found 16/4£134
sáb 17/518:53DEN - SEA
Nonstop2h 57mDelta
dom 25/507:10SEA - DEN
Nonstop2h 50mDelta
Deal found 16/4£140
qua 2/720:32DEN - SEA
Nonstop3h 03mAlaska Airlines
sáb 12/720:17SEA - DEN
Nonstop2h 42mAlaska Airlines
Deal found 16/4£149
qui 23/1013:35DEN - SEA
Nonstop2h 56mUnited Airlines
sex 31/1009:40SEA - DEN
1 stop7h 30mUnited Airlines
Deal found 16/4£168

Cheapflights Fare Finder

Customise 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 858,174 searches. Data last updated 17 abril 2025.
Use the filters below to find and compare flights from Denver to Seattle that are best for you.

Fly from

Denver

Fly to

Seattle

Route

Depart

Return

Price

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

ter 20/5

17:15-23:50

1 stop7h 35m

Seattle/Tacoma Intl

qua 21/5

05:00-08:40

Nonstop2h 40m

£126

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

qua 14/5

14:39-16:35

Nonstop2h 56m

Seattle/Tacoma Intl

qua 21/5

20:23-00:05

Nonstop2h 42m

£134

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

sáb 17/5

18:53-20:50

Nonstop2h 57m

Seattle/Tacoma Intl

dom 25/5

07:10-11:00

Nonstop2h 50m

£140

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

qua 2/7

20:32-22:35

Nonstop3h 03m

Seattle/Tacoma Intl

sáb 12/7

20:17-23:59

Nonstop2h 42m

£149

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

qua 20/8

09:59-15:14

1 stop6h 15m

Seattle/Tacoma Intl

ter 26/8

05:07-08:50

Nonstop2h 43m

£168

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

sáb 17/5

20:45-22:45

Nonstop3h 00m

£60

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

qua 25/6

19:40-21:50

Nonstop3h 10m

£75

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

sáb 30/8

09:59-15:14

1 stop6h 15m

£85

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

qui 22/5

06:00-07:59

Nonstop2h 59m

£93

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

qua 14/5

07:00-09:00

Nonstop3h 00m

£210

Flights are sorted by cheapest return flights first.

Deals found on 15/4

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 return 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.

Cheapflights Insights

Everything you need to know about your flight from Denver to Seattle

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

Use this chart to determine the optimal time to book a return flight from Denver to Seattle. Price data was last updated on 11 April 2025.

To ensure you get the cheapest price possible for a flight from Denver to Seattle, you should look to book at least 88 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 £622). Flying from Denver to Seattle in July is currently the most expensive (average of £946). 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 17 abril 2025.

It’s typically best to fly out from Denver to Seattle at midday. Doing so could potentially save you 45% on the flight price compared to flying in the afternoon, which is usually more expensive.

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 17 abril 2025.

The most flights from DEN to SEA are scheduled on a Monday (40 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 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 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

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 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

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 17 abril 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Denver to Seattle. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very Good
9,882 reviews
Check prices

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very Good
9,882 reviews
Alaska Airlines
8.0
Very Good
9,882 reviews
Check prices

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very Good
4,280 reviews
Alaska Airlines
8.0
Very Good
9,882 reviews
Check prices

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very Good
7,916 reviews
Alaska Airlines
8.0
Very Good
9,882 reviews
Check prices

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,382 reviews
Alaska Airlines
8.0
Very Good
9,882 reviews
Check prices

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,665 reviews
Alaska Airlines
8.0
Very Good
9,882 reviews
Check prices

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

  • How popular is this Denver to Seattle flight route?

    The Denver Intl to Seattle/Tacoma Intl flight path was viewed by 8 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Flying on Southwest is currently your cheapest option to Seattle, with prices starting at £126. Additional return tickets that might be worth considering are offered by Hawaiian Airlines and Delta, with the lowest prices starting at £134 and £140, respectively. Southwest is priced at 15% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as £60. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Denver to Seattle for a low price.

  • What are the most reliable airlines from Denver to Seattle?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Denver to Seattle on time: Condor (96%), Japan Airlines (95%), KLM (94%).

  • What are the cheapest flights from Denver to Seattle?

    The cheapest flight price from Denver to Seattle is £130. On average you can expect to pay £138. The most popular route, (Denver Intl - Seattle/Tacoma Intl), can usually be booked for £158.

  • 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 holiday 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 £622). Flying from Denver to Seattle in July is currently the most expensive (average of £946). 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

Travelling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Tacoma
Leavenworth
Bothell

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