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DEN - SEA

$28 Find cheap flights from Denver to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Seattle departing on 8/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 8/24
Sat 8/31

Search hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Seattle.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Seattle.
In the last 7 days travelers have searched 50,552,696 times on KAYAK, and here is why:

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Cheap flight deals from Denver to Seattle (DEN-SEA)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:05 am - 7:04 amDEN-SEA
2h 59mnonstop
8:02 pm - 11:49 pmSEA-DEN
2h 47mnonstop
$56Frontier
Find Deal
Wed, Aug 21 - Sat, Aug 31
5:05 am - 7:04 amDEN-SEA
2h 59mnonstop
8:02 pm - 11:49 pmSEA-DEN
2h 47mnonstop
$57Frontier
Find Deal
Wed, Aug 28 - Sat, Aug 31
5:05 am - 7:04 amDEN-SEA
2h 59mnonstop
8:19 pm - 12:05 amSEA-DEN
2h 46mnonstop
$58Frontier
Find Deal
Wed, Sep 4 - Tue, Sep 10
6:00 am - 8:01 amDEN-SEA
3h 01mnonstop
8:19 pm - 12:05 amSEA-DEN
2h 46mnonstop
$59Frontier
Find Deal
Sat, Sep 14 - Tue, Sep 17
6:05 am - 8:01 amDEN-SEA
2h 56mnonstop
7:25 am - 11:09 amSEA-DEN
2h 44mnonstop
$177Delta
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Wed, Aug 14 - Mon, Aug 19
5:26 pm - 12:50 amDEN-SEA
8h 24m1 stop
5:00 am - 8:47 amSEA-DEN
2h 47mnonstop
$187United Airlines
Find Deal
Fri, Dec 6 - Sun, Dec 8
6:05 am - 8:01 amDEN-SEA
2h 56mnonstop
7:25 am - 11:09 amSEA-DEN
2h 44mnonstop
$197Delta
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Thu, Aug 15 - Sun, Aug 18
11:30 am - 5:26 pmDEN-SEA
6h 56m1 stop
7:17 am - 5:22 pmSEA-DEN
9h 05m1 stop
$216American Airlines
Find Deal
Wed, Sep 4 - Tue, Sep 10
11:40 am - 8:26 pmDEN-SEA
9h 46m1 stop
7:17 am - 5:22 pmSEA-DEN
9h 05m1 stop
$226American Airlines
Find Deal
Thu, Sep 5 - Tue, Sep 10
5:50 pm - 11:54 amDEN-SEA
19h 04m2 stops
5:58 pm - 9:37 pmSEA-DEN
2h 39mnonstop
$231Alaska Airlines
Find Deal
Fri, Sep 6 - Sat, Sep 14

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 Saturday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from Denver to Seattle. For your return ticket, we recommend flying on a Wednesday 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 January, where tickets cost $128 on average. On the other hand, the most expensive months are July and December, where the average cost of tickets is $222 and $198 respectively.

Can I save money by flying with a layover from Denver to Seattle?

The average price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.
No, with an average price for the route of $1,158, prices are generally cheapest when you fly direct.

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 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 153 days before departure.

Which airlines provide the cheapest flights from Denver to Seattle?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Denver to Seattle found on KAYAK was with Frontier for $28. Frontier proposed a round-trip connection from $56 and Delta from $177.

Which airlines fly most frequently between Denver and Seattle?

Denver and Seattle are connected by different airlines. The airlines that fly that route the most regularly are United Airlines (48 flights per week), Alaska Airlines (42 flights per week), and Southwest (39 flights per week).

Which airlines fly non-stop 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 nonstop 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 $43 for a one-way flight. 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 21 and 24 nonstop flights that take off from Denver and land in Seattle, with an average flight time of 2h 55m. The most common departure time is 6:00 am and most flights take off in the morning. Each week, there are 164 flights. The most frequent day of departure is Monday, when 15% 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 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Denver to Seattle take?

Direct flights cover the 1,022 miles separating Denver to Seattle in about 2h 56m.

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 7:00 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

August

Cheapest flight

$28
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from Denver to Seattle

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.

  • What is the cheapest flight from Denver to Seattle?

    In the last 3 days, the lowest price for a flight from Denver to Seattle was $28 for a one-way ticket and $56 for a round-trip.

  • Do I need a passport to fly between Denver and Seattle?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Denver to Seattle?

    Denver and Seattle are both served by 1 main airport. You will leave Denver from Denver Intl and will be arriving at Seattle/Tacoma Intl.

  • 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 Passenger/BBJ2 (winglets) is the aircraft model that flies most regularly on the Denver to Seattle flight route.

  • Which airline alliances offer flights from Denver to Seattle?

    SkyTeam, oneworld, 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 nonstop flights from Denver to Seattle on a daily basis.

  • Which is the best airline for flights from Denver to Seattle, Delta or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Denver to Seattle are Delta and Alaska Airlines. With an average price for the route of $198 and an overall rating of 8.0, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $231 and an overall rating of 8.0.

  • 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. Booking your flights between Denver and SEA can sometimes prove cheaper using this method.

  • 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

KAYAK’s 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 $94 or less one-way and $160 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 Airport to Seattle/Tacoma Intl Airport, which days they fly and book direct flights.

Nonstop departures

Denver Intl to Seattle/Tacoma Intl

Monday

ANA, Air France, Air Tahiti Nui, +15 more

ANA, Air France, +16 more

Tuesday

ANA, Air France, Air Tahiti Nui, +15 more

ANA, Air France, +16 more

Wednesday

ANA, Air France, Air Tahiti Nui, +15 more

ANA, Air France, +16 more

Thursday

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

ANA, Air France, +17 more

Friday

ANA, Air France, Air Tahiti Nui, +15 more

ANA, Air France, +16 more

Saturday

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

ANA, Air France, +17 more

Sunday

ANA, Air France, Air Tahiti Nui, +15 more

ANA, Air France, +16 more

See more direct flights

Nonstop returns

Seattle/Tacoma Intl to Denver Intl

Monday

ANA, Air France, Air Tahiti Nui, +15 more

ANA, Air France, +16 more

Tuesday

ANA, Air France, Air Tahiti Nui, +15 more

ANA, Air France, +16 more

Wednesday

ANA, Air France, Air Tahiti Nui, +15 more

ANA, Air France, +16 more

Thursday

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

ANA, Air France, +17 more

Friday

ANA, Air France, Air Tahiti Nui, +15 more

ANA, Air France, +16 more

Saturday

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

ANA, Air France, +17 more

Sunday

ANA, Air France, Air Tahiti Nui, +15 more

ANA, Air France, +16 more

See more direct flights
See more direct flights

Top 4 airlines serving 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 9365 reviews
7.2Food
7.9Comfort
8.6Crew
7.2Entertainment
8.2Boarding
Airline reviews

Very friendly staff, very responsive to complaints about the cabin temperature. 😁

10.0 ExcellentAnonymous, Jul 2024MKE - SEA
Read more about Alaska Airlines reviews

Very friendly staff, very responsive to complaints about the cabin temperature. 😁

...just O.K., I paid to upgrade our seating but seemed the same old cramped seat to me! What a rip off. Movie choices were minimal, lots of stuff not worth watching!!!

I was assigned a seat other than what I chose when I booked the flight. I chose a seat somewhat behind first class so that I could get off in a timely manner to ensure a wheelchair. Instead, I was assigned the handicap seat in the back row near the gross bathroom. I noticed when I got to the airport my boarding pass did not have my seat on it. However, when I spoke to the woman at the gate about getting a wheelchair for the onboarding process, I then saw a seat number on my boarding pass. I think she gave me a seat that I didn’t choose when I booked the flight. Now I wonder if I paid more money than what the back seat was worth??

The crew was pleasant! Our flight was delayed, and the pilot explained why. That was nice!

Flight was smooth and pilot was communicative with updates throughout the flight. Attendants were friendly.

I was traveling while very tired. The crew was very patient with me and I appreciated their kindness in addressing my needs. Having recently suffered a death in the family, I wasn’t prepared for the rigors of the day. They took good care of me and I was thankful for that. As for the rest of the flight that day, Alaska Airlines once again delivered a quality service. Every company has standards, and it is good to see the difference in quality of service when those standards are enforced! Keep up the great work!

I didn't use the entertainment options. Otherwise it was a good flight.

Flights were on time and everything went well thank you

The seats were comfortable, the overhead bins were ample, the staff was helpful, attentive, and friendly. I enjoyed free texting. However, I much prefer Southwest no reserved seats (take any unoccupied seat) and their policy of two checked bags free, and ability to freely change flights. The Alaska airplane was nicer and newer than the Southwest one. Overall, my Alaska Airlines flying experience was a very positive one.

The flight was delayed and I missed my connecting flight to LHR.

First, the flight was schedule to leave at 12:08. Delayed to 12:38. It is 12:58 and I am sitting at the gate. The staff are not communicating with us (just tell me it’s gonna be five hours if that’s the case, quit hufflepuffing around like you’re trying to board us when the plane isn’t even here and you don’t know where your crew are. I’m still waiting for any communication about the further delay. This is a rebooked flight from a cancelled flight yesterday, when the airline failed to fulfill its fiduciary responsibility to hotel and cover transport for overnight cancelations. Asking about the food on the flight? What food?!? Delta doesn’t serve meals unless you pay for them and you really want me to give delta a high rating for passing out processed snacks (fun size!)? Can we be for real. Delta is cementing itself in history as one of the cheap, stingy, outdated, glory days are over airlines, and it shows. I took this flight knowing delta was going to provide below level service but this is beyond burgers!! I can’t believe a multi billion or dollar company looked straight in my eyes yesterday and I told me this wasn’t their fault and there for the extra cost in hotel and hundreds of dollars in Ubers are MY RESPONSIBILITY. The only thing I am at fault for is believing delta is reputable company worthy of my dollars. I’m not even sure I want to be compensated unless it is cash because I would rather die never traveling again than to put money in their pockets.

The flight was great. The crew were a little terse about the size of my bag. It fit fine.

Screen didn’t play movies, do I was pretty boated the entire flight.

It was very cold because the air conditioner was on high power, and my son got sick.

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

Delta is one of the best airlines I have flown

It was a Red-Eye flight so was not comfortable enough to sleep, but seat was as expected. Crew was great and in-flight entertainment was excellent. Flight was smooth

Standard economy seats on Deltas 767 were better than Alaska premium seats on their 737 MAX9; more legroom, wider seats. Entertainment was great, no ipad or phone required. Could have included a meal service.

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

See my previous comments. I was probably booked in business but was moved to economy

No water on the toilets, dirty sits. 4 hours delayed departure.

East Lounge in Denver was terrible. Turning away active military on orders? Really? Sad.

The flight was delayed, but other than that everything was fine.

Two hour flight delay, it was awful and loss of sleep.

No real agent onsite helping you for missing luggage there. Not like the other airline next to UA desk, they have staff attending in their desk assisting answer/helping luggage issue, even after midnight.

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Flight delayed from Cape Town to Washington then got diverted to miami and in miami we had to fend for ourselves , im still trying to get to Shreveport now

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

I fly Frontier often and generally don't have any issues. For some reason, the Denver to Houston's George Bush Intercontinental (IAH) flight always needs to wait on the tarmac in Houston because a gate is not available after landing. I've been stuck for as little as 15 minutes and as much as a little over an hour. I know only fly the Frontier Denver to IAH route when there is not an available flight to Houston Hobby (HOU).

Gate agent for Frontier in Sioux Falls was horrible. Some people shouldn't have jobs where they need to work with people. This person tried to control everything and even argued with a Sheriff's Deputy. He seemed to write the law and think he was immune to everything and could do whatever he wanted. What a miserable experience for a lot of people. He even delayed the flight just for on his own actions. The pilots made up the time lost, but why does this person have this job. Apparently nobody cares at Frontier. We do, My wife said she would never fly on Frontier again.

Did not realize seats did not recline. Best to travel in an exit row... No question

Didn't like anything..entire crew was very rude to everyone on the flight. Plane old and the trays fall down on you the while time you're flying. Charged more for a carry on bag than for the plane ticket itself. Did make it from point a to point b, but worth the extra money to fly with another airline

My experience with frontier staff at the Denver airport was absolutely horrible. The manager on duty was even worst if was the worst experience I have ever had, I have never been treated so poorly as a customer in my life! The staff was extremely rude, eye rolls and attitude and then refusal to help me at all. I wish I could never fly frontier again that’s how horrible it was!

Fecal matter in seat back pocket. Presumably from a kids diaper.

I didn't get to do this flight l, hard to review

Not good 😐 Over priced baggage fees Small hard seats No wifi or entertainment options 😕

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

Book cheap flights from Denver to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Denver to Seattle found on KAYAK in the last 72 hours.
8/14Wed
nonstopFrontier
2h 59mDEN-SEA
$28
10/22Tue
nonstopFrontier
3h 02mDEN-SEA
$29
8/24Sat
nonstopDelta
3h 01mDEN-SEA
$79
9/24Tue
1 stopAmerican Airlines
6h 56mDEN-SEA
$88
8/26Mon
nonstopDelta
2h 56mDEN-SEA
$89
10/24Thu
1 stopAlaska Airlines
7h 45mDEN-SEA
$98
8/27Tue
1 stopUnited Airlines
6h 46mDEN-SEA
$114
9/24Tue
1 stopUnited Airlines
8h 06mDEN-SEA
$128
10/1Tue
2 stopsAlaska Airlines
11h 45mDEN-SEA
$147
8/1Thu
1 stopAmerican Airlines
5h 51mDEN-SEA
$168

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Last minute flights from Denver to Seattle

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Denver to Seattle that are departing in the next 10 days.
7/30Tue
nonstopFrontier
3h 02mDEN-SEA
8/6Tue
nonstopFrontier
2h 47mSEA-DEN
$118
7/30Tue
nonstopFrontier
3h 02mDEN-SEA
8/6Tue
multi-stopFrontier
9h 13mSEA-DEN
$124
7/29Mon
nonstopUnited Airlines
2h 57mDEN-SEA
7/29Mon
nonstopUnited Airlines
2h 45mSEA-DEN
$319
7/27Sat
nonstopAlaska Airlines
2h 59mDEN-SEA
7/30Tue
nonstopAlaska Airlines
2h 40mSEA-DEN
$327
7/29Mon
nonstopUnited Airlines
2h 57mDEN-SEA
7/29Mon
multi-stopUnited Airlines
7h 24mSEA-DEN
$329
7/29Mon
nonstopDelta
3h 00mDEN-SEA
7/29Mon
nonstopDelta
2h 33mSEA-DEN
$331
7/27Sat
nonstopAlaska Airlines
2h 59mDEN-SEA
7/30Tue
multi-stopAlaska Airlines
7h 09mSEA-DEN
$346
7/29Mon
nonstopDelta
3h 01mDEN-SEA
8/1Thu
nonstopDelta
2h 33mSEA-DEN
$747
7/29Mon
multi-stopAmerican Airlines
5h 51mDEN-SEA
8/1Thu
multi-stopAmerican Airlines
7h 05mSEA-DEN
$750
7/27Sat
multi-stopAmerican Airlines
5h 51mDEN-SEA
8/8Thu
multi-stopAmerican Airlines
7h 01mSEA-DEN
$767

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Denver - Seattle Flights

Departure:

Denver (DEN)United States

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Denver

Cabin classes:

$339
$475
$438
$71