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DEN - SEA

Find cheap flights from Denver to Seattle

1 adult
0 bags
Mon 3/6
Mon 10/6

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Seattle, as well as popular online travel agencies
In the last 7 days, travellers have searched 43,693,958 times on KAYAK, and here is why:

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Flights from Denver to Seattle - Travel Insights & Trends

Get data-powered insights and trends into flights from Denver to Seattle to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Denver to Seattle?

The average price of all flights from Denver to Seattle clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Seattle on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Denver to Seattle. For your return ticket, we recommend flying on a Tuesday and avoiding Mondays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Denver to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Denver to Seattle is February, where tickets cost C$ 202 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is C$ 407 and C$ 394 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Denver to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Denver to Seattle, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 30 days before departure.

Which airlines fly most frequently between Denver and Seattle?

Alaska Airlines connects Denver to Seattle with up to 8 flights per day. United Airlines also offers 8 flights per day, while Southwest follows with 6 flights per day.

Which airlines fly direct between Denver and Seattle?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Denver to Seattle.
There are 5 airlines that fly direct from Denver to Seattle. They are: Alaska Airlines, Delta, Frontier, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with Frontier at C$ 111. On average, the best prices for this route can be found at Frontier.

How many flights are there between Denver and Seattle per day?

Each day, there are between 22 and 33 nonstop flights that take off from Denver and land in Seattle, with an average flight time of 2h 57m. The most common departure time is 6:00 p.m. and most flights take off in the morning. Each week, there are 200 flights. The most frequent day of departure is Wednesday, when 17% of all weekly flights depart. The fewest flights depart on a Saturday.

Which cabin class options are there for flights between Denver and Seattle?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 2 cabin class options for the route. These are Business and Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

What’s the earliest departure time from Denver to Seattle?

Early birds can take the earliest flight from Denver at 5:01 am and will be landing in Seattle at 7:04 am.

What’s the latest departure time from Denver to Seattle?

If you prefer to fly at night, the latest flight from Denver to Seattle jets off at 10:45 pm and lands at 12:35 am.

Good to know

Low season

January

High season

July
Best time to beat the crowds (27% less expensive on average)
Most popular time to fly (38% more expensive on average)

When to book flights from Denver to Seattle

Are your dates flexible? Find out the best times to travel from Denver to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Denver to Seattle

  • Which is the best way to get to downtown Seattle from SEA?

    The distance from SEA to the city center of Seattle is approximately 13.8 miles. A light rail provides the best way to travel between these two distances, taking about 40min to complete the journey. Another option is to hop onto the airport shuttle, which takes around 1h to commute from SEA to the city center of Seattle. If you want to get there in under 25min, a taxi is handy.

  • Which family-friendly amenities are the SEA?

    Seattle-Tacoma International Airport (SEA) has rooms where moms can pump or breastfeed in privacy. These facilities are situated in Concourse D on the lower level of D Annex and Concourse N on the Mezzanine level. Also in these rooms are comfy chairs, electrical sockets, and sinks.

  • Which airline allows pets on board from DEN to SEA?

    Passengers flying American Airlines will be glad to know that the carrier allows you to bring pets like cats and dogs in the cabin when traveling from DEN and SEA. Remember to carry their health documents and vaccination certificates; you must restrain them in their cages during the trip.

  • Where can I withdraw money at SEA?

    Various banks and credit unions run their ATMs at SEA, making it easy for arriving travelers to recharge their wallets. They’re situated on Concourse A and in the Baggage Claim.

  • Does Denver International Airport offer any amenities for pets or service animals?

    In addition to having several indoor pet relief areas in Terminals A, B, and C of Denver International Airport, there is an outdoor relief zone that can be found in Jeppesen Terminal. Each of these areas contains grass, secure fencing, soap, running water, and waste disposal bags. There is also a 4 Paws Pet Resort that is connected to the airport via a free shuttle and provides boarding and grooming services for animals.

  • Do any airlines have lounges for their customers at Denver International Airport?

    Both American Airlines and Delta Airlines have lounges located in Concourse A of Denver International Airport in the Departures terminal. Additionally, United Club has two lounges that can be found in the airport’s East Wing and West Wing, and they also offer an annual membership program.

  • Are there any shower facilities at Seattle-Tacoma International Airport?

    To take a quick shower after your plane has landed, go to the Delta Airlines Sky Club between Gates S8 and S9 in Seattle-Tacoma International Airport. This lounge allows travelers to buy entry tickets at the door and has shower stalls, hairdryers, towels, and toiletry kits that contain shampoo and soap.

  • Where can I rent a car at Seattle-Tacoma International Airport?

    To rent a car from Seattle-Tacoma International Airport, go to the Rental Car Facility by taking the free 24h shuttle that departs from outside of the Arrivals terminal. Several major rental companies can be found in this center, including Budget and Enterprise, and most of them keep their cars on-site or provide free transportation to their parking garage facility.

  • Which airlines offer Wi-Fi service onboard planes from Denver to Seattle?

    Alaska Airlines, Air Canada, United Airlines, and Delta offer inflight Wi-Fi service on the Denver to Seattle flight route.

  • Which aircraft models fly most regularly from Denver to Seattle?

    The Boeing 737-800 is the aircraft model that flies most regularly on the Denver to Seattle flight route.

  • Which airline alliances offer flights from Denver to Seattle?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Denver and Seattle, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Denver to Seattle?

    There are direct flights from Denver to Seattle on a daily basis.

  • How does KAYAK find such low prices on flights from Denver to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Denver with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from Denver to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 114 or less one-way and C$ 179 or less round-trip.
  • Travelers with scheduled early morning flights via Denver International Airport (DEN) should consider spending a night in one of the numerous hotels around this facility. Typically, such facilities provide complimentary cars to and from the airport, making it possible to be at the terminal in time for your flight. Such hotels include Embassy Suites by Hilton Denver International Airport.
  • Denver International Airport (DEN) features only one terminal, the Jeppesen Terminal, complimented by three Concourses, A, B, and C. This terminal includes check-in facilities, security checkpoints, customs, immigration, and luggage claims. The concourses are reserved for departures. Movement between the terminal and the concourses is via The Automated Guideway Transit System, which departs at a 5-15min interval.
  • Families traveling using Denver International Airport (DEN) will be glad to know that the property caters to the needs of moms and the smallest of the family members. Lactating and nursing rooms are situated after security in every concourse from where you can pump and breastfeed in privacy. Also, the rooms feature sinks, power sockets, and comfy seats.
  • Suppose you wish to say a prayer before departing from DEN to Seattle-Tacoma International Airport (SEA). In that case, you’ll find a prayer room at this facility. Situated away from the noisy terminals, this sacred sanctuary sits in Jeppesen Terminal, Level 6 East, and it runs between 4 am and midnight every day. The room includes an Islamic Masjid and an inter-faith chapel.
  • If you’ve arrived at DEN and wish to drop off your car before flying out to Seattle-Tacoma International Airport (SEA), you won’t have a shortage of options to meet your needs. DEN offers different levels of parking, including garage, economy, short-term, and long-term. Economy parking is located on the east side of Jeppesen Terminal, and shuttles depart every 10min to get you there.
  • Both United and Delta Airlines offer flights from Denver to Seattle that provide travelers with comfortable seats and additional legroom, as well as in-flight entertainment. If you would like to check your suitcases for free and receive complimentary snacks, opt for flying with Southwest Airlines instead.
  • If you’re traveling to Seattle for an important meeting or workshop, stop by the business center that is near the B Gates of Denver International Airport (DEN). This center provides guests with private workstations, copying services, shipping supplies, and access to the airport’s high-speed Wi-Fi.
  • To pass the time before your flight from Denver to Seattle begins boarding, go to the ZooX Public Internet Kiosk Systems in the Jeppesen Terminal of Denver International Airport. These booths allow travelers to play video games for $0.15 per minute, with a minimum payment of $3.
  • Hoping to leave one of your bags at the airport while you explore? Go to the Smarte Carte Baggage Storage desk between baggage carousels 12 and 13 of Seattle-Tacoma International Airport (SEA). In addition to offering baggage storage for $8 to $22 per item per 24h, this center also has notary and fax services.
  • To de-stress after a long day of travel, stop by the Massage Bar near the N gates of Seattle-Tacoma International Airport. 15m massages start at $18, with 30m massages costing $43. You can also have an express foot massage for less than $20.
See more tips

Prefer to fly non-stop from Denver to Seattle?

Find which airlines fly direct from Denver Intl to Seattle/Tacoma Intl, which days they fly and book direct flights.

Nonstop departures

Denver Intl to Seattle/Tacoma Intl

Monday

ANA, Air France, Air Tahiti Nui, +16 more

ANA, Air France, +17 more

Tuesday

ANA, Air France, Air Tahiti Nui, +17 more

ANA, Air France, +18 more

Wednesday

ANA, Air France, Air Tahiti Nui, +16 more

ANA, Air France, +17 more

Thursday

ANA, Air France, Air Tahiti Nui, +18 more

ANA, Air France, +19 more

Friday

ANA, Air France, Air Tahiti Nui, +16 more

ANA, Air France, +17 more

Saturday

ANA, Air France, Air Tahiti Nui, +17 more

ANA, Air France, +18 more

Sunday

ANA, Air France, Air Tahiti Nui, +17 more

ANA, Air France, +18 more

See more nonstop flights

Nonstop returns

Seattle/Tacoma Intl to Denver Intl

Monday

ANA, Air France, Air Tahiti Nui, +16 more

ANA, Air France, +17 more

Tuesday

ANA, Air France, Air Tahiti Nui, +17 more

ANA, Air France, +18 more

Wednesday

ANA, Air France, Air Tahiti Nui, +16 more

ANA, Air France, +17 more

Thursday

ANA, Air France, Air Tahiti Nui, +17 more

ANA, Air France, +18 more

Friday

ANA, Air France, Air Tahiti Nui, +16 more

ANA, Air France, +17 more

Saturday

ANA, Air France, Air Tahiti Nui, +17 more

ANA, Air France, +18 more

Sunday

ANA, Air France, Air Tahiti Nui, +17 more

ANA, Air France, +18 more

See more nonstop flights
See more nonstop flights

Top airlines flying from Denver to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Denver to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9128 reviews
8.2Boarding
8.6Crew
7.9Comfort
7.3Entertainment
7.3Food
Airline reviews

There was a row with three women who were very loud - talking and laughing. In an open, outdoor setting that's fine. On an airplane, no. The flight attendants told the women they were the fun row. It took the woman sitting in the row ahead of the loud women to tell them they were too loud, but everyone in the general vicinity was irritated. I didn't think it would be possible to be so rowdy for so long. Then when we landed we weren't let off at a gate. We had to be bussed in and the bus contended with airline traffic. After dealing with the loud passengers, this was not what I was expecting. An incredibly disappointing experience with an airline that I have always regarded as one of the better ones.

4.0 OkayElizabeth, May 2024ATL - SEA
Read more about Alaska Airlines reviews

There was a row with three women who were very loud - talking and laughing. In an open, outdoor setting that's fine. On an airplane, no. The flight attendants told the women they were the fun row. It took the woman sitting in the row ahead of the loud women to tell them they were too loud, but everyone in the general vicinity was irritated. I didn't think it would be possible to be so rowdy for so long. Then when we landed we weren't let off at a gate. We had to be bussed in and the bus contended with airline traffic. After dealing with the loud passengers, this was not what I was expecting. An incredibly disappointing experience with an airline that I have always regarded as one of the better ones.

They oversold my flight by 9 seats so when I went to check in I was not assigned a seat and the only one available if I didn’t want to chance it were 100 dollars more

Was not happy that we had to wait an additional 50 minutes for passengers that were still in TSA. This delay made us miss our connecting flight in Seattle to get home to tuck in our two little toddlers. We ran off the plane and ran across the entire airport trying to make this flight only to get to the gate to see that they have ended boarding. So they were willing to wait for passengers in Hawaii but not Seattle?? Especially when this wasn't even our fault. I expect to receive miles for missing our flight and spending an additional 4 hours in Seattle.

Better organizing of entry and exit onto the plane regarding all of the baggage people haul on. There should be a better system so those with no baggage can get in and out more quickly. The baggage haul-on situation is absurd.

It was a great experience, although our seat was taken and we did not want to be rude and ask the person to move. Flight Attendants need to make sure that people should be in their assign sitting that are paid for. Other then that, we had a great flying experience with Alaska Airlines.

Too many people with oversized carry-ons. Uncomfortable seats. flight was too crowded.

Assigned last seat in row Did not recline at all Alaska Air seemed to have more leg room than my last few flights on United Yay!

The WIFI didn't work well enough to get through even 5 minutes of a movie I had selected (it just kept pausing and spinning), and I just gave up and read a book. The selection of movies was a little sparse though, so reading wasn't that bad of an option. This was an older 737-800, with undersized overhead bins -- but it doesn't make sense to me that we are told to slide our bags in with the wheels facing us (most people ignore that and put the handles facing us). This makes it more difficult to remove the bags (no handle). The flight went well, and the fruit/cheese platter I pre-ordered was good -- although it is a little annoying to have to pre-order for this (but I suppose it saves time). When I pre-order it automatically gets charged to my personal credit card (Alaska VISA), when I'd prefer to use my corporate card for that on business trips.

It was our baby’s first flight and everything went perfect. The flight attendant gave him his first set of wings and we were smooth flying from there.

My flight went off without any hitch or issue. I anticipate issues every time I fly, luckily, I was wrong on this trip.

Left Denver late, then sat on tarmac 30 min after arrival

The whole experience was bad. Didn't know no complimentary drinks or snacks. $4.39 for a soda is ridiculous even a bottle water. A carry on was $74 just crazy. I don't think I will take this airline ever again. Very bad

Everything was good, 20/30 minutes late waiting on a crew member. It’s hard to keep employees. Or serious employees I know. I remember one flight from Houston of Frontiers was almost 18 hours late. And another 4 hours late very poor. But I would rather be late and safe than the on the news. Thank you.

Bought seats on the flight and they were supposed to be 2 and a jumpseat. Plane clearly changed and it was a regular 3 seat row. Asked for a refund and was denied. If I wanted to sit next to someone else I wouldn't have bought the seats..

Lost baggage on my connecting flight. 24 hours later, still no update on my bags.

They didn’t bother to restock the plane before we left, so most items on the menu were not available.

It’s a cheap airline and I wish if they had better seats.

Seats are cramped and uncomfortable. You have to pay for everything and it is very expensive.

For a busy travel season, everything was clearly marked, correct, and smooth. My favorite travel description is “UNEVENTFUL,” and this trip met the mark!

The flight and crew were fine. When we (several groups) arrived in Norfolk on Sunday we discovered our bags had not arrived. The staff at norfolk airport was less than helpful. Told us our bags wouldn't arrive until Thursday. When asked what happened they said it bags never made it on the plane and it happened all the time. When asked about reimbursement for replacement items the desk agent said we could try to submit receipts online, but they weren't sure we would be reimbursed. I understand this is a low cost airline, but this was really beyond poor customer service.

Book cheap flights from Denver to Seattle

One-way flight deals

directAmerican Airlines
2h 55mDEN-SEA
directCondor
2h 59mDEN-SEA
directKLM
3h 10mDEN-SEA
directQatar Airways
2h 57mDEN-SEA
directJapan Airlines
2h 57mDEN-SEA
directIcelandair
2h 57mDEN-SEA
directAir France
3h 10mDEN-SEA
directSun Country Air
3h 00mDEN-SEA
directDelta
3h 00mDEN-SEA
directCopa Airlines
2h 59mDEN-SEA
directSWISS
2h 55mDEN-SEA
directUnited Airlines
2h 57mDEN-SEA
directAlaska Airlines
2h 57mDEN-SEA
directFrontier
3h 03mDEN-SEA
directSouthwest
2h 55mDEN-SEA
directFinnair
2h 57mDEN-SEA
directKorean Air
2h 57mDEN-SEA
directANA
3h 01mDEN-SEA
directAir Tahiti Nui
2h 57mDEN-SEA
directWestJet
3h 05mDEN-SEA
directVirgin Atlantic
3h 00mDEN-SEA
directSingapore Airlines
2h 57mDEN-SEA

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Denver - Seattle Flights

Departure:

Denver (DEN)United States

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Denver

Cabin classes:

C$ 74

Browse origins:

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  • Denver

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