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SEA - DEN

Find cheap flights from Seattle to Denver from $29

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Denver departing on 5/7. 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
Thu 5/16
Thu 5/23

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Denver.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Denver.
In the last 7 days travelers have searched 43,990,755 times on KAYAK, and here is why:

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Denver 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
10:08 pm - 2:01 amSEA-DEN
2h 53mnonstop
5:01 am - 7:04 amDEN-SEA
3h 03mnonstop
$63Frontier
Find Deal
Sat, May 18 - Sun, May 19
5:58 pm - 9:46 pmSEA-DEN
2h 48mnonstop
2:49 pm - 4:58 pmDEN-SEA
3h 09mnonstop
$65Frontier
Find Deal
Wed, May 1 - Wed, May 8
9:35 pm - 1:25 amSEA-DEN
2h 50mnonstop
2:49 pm - 4:58 pmDEN-SEA
3h 09mnonstop
$66Frontier
Find Deal
Tue, May 7 - Wed, May 8
10:08 pm - 2:01 amSEA-DEN
2h 53mnonstop
5:01 am - 7:04 amDEN-SEA
3h 03mnonstop
$67Frontier
Find Deal
Sat, May 18 - Sun, May 19
2:55 pm - 6:42 pmSEA-DEN
2h 47mnonstop
5:11 am - 7:20 amDEN-SEA
3h 09mnonstop
$68Frontier
Find Deal
Sat, Apr 27 - Mon, May 6
10:08 pm - 2:01 amSEA-DEN
2h 53mnonstop
5:01 am - 7:04 amDEN-SEA
3h 03mnonstop
$109CitizenPlane
Find Deal
Sat, May 18 - Sun, May 19
10:24 pm - 2:17 amSEA-DEN
2h 53mnonstop
9:00 am - 4:40 pmDEN-SEA
8h 40m1 stop
Fri, May 17 - Sun, May 19
10:44 am - 5:39 pmSEA-DEN
5h 55m1 stop
9:00 am - 4:40 pmDEN-SEA
8h 40m1 stop
Tue, May 14 - Sun, May 19
7:35 pm - 11:23 pmSEA-DEN
2h 48mnonstop
6:15 am - 8:18 amDEN-SEA
3h 03mnonstop
$198Delta
Find Deal
Fri, May 17 - Sun, May 19
7:20 am - 11:00 amSEA-DEN
2h 40mnonstop
7:50 pm - 9:56 pmDEN-SEA
3h 06mnonstop
$219Delta
Find Deal
Wed, May 1 - Wed, May 1

Flights from Seattle to Denver - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to Denver 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 Seattle to Denver?

The average price of all flights from Seattle to Denver clicked on KAYAK for each day over the last 12 months.
For Seattle to Denver, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Denver back to Seattle, the best deals are generally found on Tuesday, with Sunday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to Denver, 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 Seattle to Denver is January, where tickets cost $158 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $297 and $283 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to Denver, 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 Seattle to Denver, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 34 days before departure.

Which airlines provide the cheapest flights from Seattle to Denver?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Frontier offered the best one-way deal for that route, at $29. KAYAK users also found Seattle to Denver round-trip flights on Frontier from $63 and on CitizenPlane from $109.

Which airlines fly most frequently between Seattle and Denver?

United Airlines connects Seattle to Denver with up to 9 flights per day. Alaska Airlines also offers 6 flights per day, while Delta follows with 6 flights per day.

Which airlines fly non-stop between Seattle and Denver?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Seattle to Denver.
There are 5 airlines that fly nonstop from Seattle to Denver. They are: Alaska Airlines, Delta, Frontier, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with Frontier at $40 for a one-way flight. On average, the best prices for this route can be found at Frontier.

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

Each day, there are between 25 and 34 nonstop flights that take off from Seattle and land in Denver, with an average flight time of 2h 45m. The most common departure time is 5:00 am and most flights take off in the morning. Each week, there are 199 flights. The most frequent day of departure is Thursday, when 17% of all weekly flights depart. The fewest flights depart on a Tuesday.

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

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 Seattle to Denver take?

The average nonstop flight takes 2h 38m, covering a distance of 1,022 miles.

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

Early birds can take the earliest flight from Seattle at 5:00 am and will be landing in Denver at 8:44 am.

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

If you prefer to fly at night, the latest flight from Seattle to Denver jets off at 10:34 pm and lands at 2:21 am.

Good to know

Low season

January

High season

July

Cheapest flight

$29
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 30% increase in price.
Flight from Seattle to Denver

When to book flights from Seattle to Denver

Are your dates flexible? Find out the best times to travel from Seattle to Denver 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 Seattle to Denver

  • What are some eco-friendly airlines flying between Seattle and Denver?

    When flying from Seattle to Denver, each passenger adds an average of 2304 lbs of carbon dioxide to the greenhouse effect. However, you have the option of flying more sustainably with Alaska Airlines and Frontier, as these two airlines provide flights that produce 52% less carbon dioxide emissions per passenger on this route.

  • Does Seattle-Tacoma International Airport offer accessible services?

    SEA provides accessible services for individuals with special needs. The airport has wheelchair-accessible elevators, restrooms, shuttle buses, and parking spots. The airport provides boarding and deplaning assistance, wheelchair service, and gate access assistance. SEA also provides magnifying glasses, adjustable-height chairs, earplugs, and Braille signs.

  • What are the public transportation options from Denver International Airport?

    DEN features several public transit alternatives. The RTD Airport Route connects downtown commuters to the airport. This bus route features citywide stops. The Flatiron Flyer operates from the airport to downtown Denver and back, with many stops. The University of Colorado A Line runs every 15 minutes between the airport and Union Station. You can also take a taxi from DEN to downtown.

  • Where can I park my car at Seattle-Tacoma International Airport before flying to Denver?

    In SEA, finding a parking spot is a breeze. Visitors to Denver can choose from a number of parking alternatives, including short-term, hourly, economy, and valet parking. The parking garage adjacent to the main terminal houses these parking alternatives. You can also make your parking arrangements ahead of time with the airport's online parking reservation system.

  • Are there car rentals at Denver International Airport?

    Yes, DEN does provide car rental services. At the airport, you can choose between Avis, Alamo, Budget, National, Dollar, Enterprise, and Hertz rental providers. On the lower level of the main terminal, toward the airport's western side, you'll find the car rental providers. If you want to ensure that your car choice is waiting for you on arrival, you may reserve it online in advance.

  • Can I take the train to Seattle-Tacoma International Airport?

    Yes. You can board a train to SEA You can take the Link Light Rail to the airport from the University of Washington and downtown Seattle. It is about a 30 minutes ride, departing every 6–15 minutes throughout the day. The Link Light Rail's Red Line connects the airport station with Beacon Hill and Capitol Hill neighborhoods.

  • Is there anywhere to smoke at Seattle-Tacoma International Airport?

    While smoking is not allowed inside any of the terminals at Seattle-Tacoma International Airport, there are two locations outside where you may smoke. The first is near the north end of the baggage claim level, and the second is across from the small parking lot. To determine if you are allowed to smoke, look for ashtrays and double check that there are no airport signs prohibiting it.

  • What is there to do while waiting at Seattle-Tacoma International Airport?

    In addition to periodic live music performances, Seattle-Tacoma International Airport also has a diverse Art Walk that is 0.5 mi long and begins near Gate A 14. There are also several Digiboo self-service kiosks located throughout the airport that allow travelers to download movies and televisions shows directly onto their portable devices.

  • Are there any amenities for pets at Denver International Airport?

    There are several pet relief zones located in the centers of Terminals A, B, and C at Denver International Airport and they provide pet owners with waste disposal bags, trashcans, and running water. Additionally, there is a Paradise 4 Paws Pet Resort adjacent to the main terminal that offers both pet boarding and grooming services.

  • Where can I grab a meal at Denver International Airport?

    Boulder Beer Tap House is located in the Jeppesen Terminal of Denver International Airport and serves a selection of burgers, appetizers, and salads, while Cantina Grill is located nearby and has a Mexican-inspired menu. The Denver Chophouse is located near the A Gates and is known for its vegan and gluten-free meals.

  • What is the cheapest flight from Seattle to Denver?

    In the last 3 days, the lowest price for a flight from Seattle to Denver was $29 for a one-way ticket and $63 for a round-trip.

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

    No, a passport isn't needed to fly from Seattle to Denver. However, local authorities might ask for an official ID.

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

    Alaska Airlines, Delta, American Airlines, Aeromexico, and JetBlue offer inflight Wi-Fi service on the Seattle to Denver flight route.

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

    The Boeing 737 MAX 9 is the aircraft model that flies most regularly on the Seattle to Denver flight route.

  • Which airline alliances offer flights from Seattle to Denver?

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Seattle to Denver are Alaska Airlines and Delta. With an average price for the route of $238 and an overall rating of 8.1, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $218 and an overall rating of 8.0.

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

    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 Seattle to Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Seattle 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 Seattle to Denver?

    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 Denver with an airline and back to Seattle with another airline. Booking your flights between Seattle and DEN 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 Seattle to Denver?

    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 Denver from Seattle 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 SEA to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $96 or less one-way and $148 or less round-trip.
  • Alaska Airlines is an ideal option for families traveling from Seattle to Denver. They provide families with expansive seating options. Alaska Airlines also provides nursing facilities, such as nursing rooms, and allows breastfeeding on board. Alaska Airlines also offers a broad variety of kid-friendly entertainment, including games and cartoons. They also provide kid-friendly meals. Lastly, Alaska Airlines provides pre-boarding for mothers with toddlers.
  • From Denver International Airport (DEN), you can drive to adjacent cities such as Boulder in approximately 45min, Longmont in about 50min, and Fort Collins in around an hour and 15min. Both Cheyenne, Wyoming, and Colorado Springs are approximately 2 hours by car.
  • At Seattle-Tacoma International Airport (SEA), there are airport inter-terminal transfers onsite. The Automated People Mover links the Main Terminal and the North Satellite, and it is free. The APM departs from each terminal every three minutes and takes around two minutes to make the round trip. In addition, complimentary shuttles run every ten minutes between the airport's terminals and parking garages.
  • For travelers looking for non-stop flights from Seattle to Denver, book your reservation with either United, Delta, or Frontier Airlines, as each of these companies offers many flights without layovers. If you would like some extra perks, look into flying with Southwest Airlines, as they provide free checked baggage and snacks.
  • If you’re trying to find a way to pass the time before boarding your flight from Seattle to Denver, purchase an entry ticket for the Club at SEA in Seattle-Tacoma International Airport (SEA). This lounge is open to customers of all airlines and provides guests with snacks, magazines, televisions, and games.
  • Have a question about the airport or need help finding a specific service? Look for the Airport Volunteers stationed throughout Seattle-Tacoma International Airport in bright blue jackets. These volunteers can help you find your gate, recommend dining options, and tell you about the airport’s various amenities.
  • If you are feeling sore after being cooped up in a plane for several hours, consider getting a quick massage at A Massage in Denver International Airport (DEN). With two locations near the A and B Gates, this massage parlor is a quick and convenient way to let go of any tension and stress.
  • For those that are traveling with a small child, take note of the fact that there are private nursing rooms located in each terminal of Denver International Airport. These rooms contain seating, outlets, changing tables, and sinks, and they are free to access.
See more tips

Prefer to fly non-stop from Seattle to Denver?

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

Nonstop departures

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 Tahiti Nui, Alaska Airlines, +16 more

ANA, Air Tahiti Nui, +17 more

Thursday

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

ANA, Air France, +18 more

Friday

ANA, Air Tahiti Nui, Alaska Airlines, +16 more

ANA, Air Tahiti Nui, +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 direct flights

Nonstop returns

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, +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, +16 more

ANA, Air France, +17 more

Saturday

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

ANA, Air France, +17 more

Sunday

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

ANA, Air France, +18 more

See more direct flights
See more direct flights

Top 5 airlines serving from Seattle to Denver

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Denver. 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 Seattle to Denver? 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.
8.1
Alaska AirlinesOverall score based on 9085 reviews
7.3food
8.6crew
7.3entertainment
8.2boarding
7.9comfort
Airline reviews

Red eye flight, so not expecting any extras, but the boarding and trip was smooth. Thx Alaska.

10.0 ExcellentMarlow, Apr 2024SEA - MCO
Read more about Alaska Airlines reviews

Red eye flight, so not expecting any extras, but the boarding and trip was smooth. Thx Alaska.

Received little assistance with air sick child. Crew’s main concern was if anything got on the seat belt!

Flight was excellent! Comfortable seats. Flew out of IND. very friendly crew!

It was fine… Just overbooked every seat was taken and very bumpy nothing they could do about that. Overall I like to fly Alaska airlines

Seat width is getting ridiculous. I don’t like having to twist myself into a ball to avoid my neighbor. It has gotten so bad over the last few years.

Flight had mechanical delay, but otherwise it was good considering it was a full plane. Did not have food or entertainment. Staff were great.

It was a great flight. The flight crew was very helpful and professional.

I tried to cancel my flight weeks in advance round trip and told I was not able to. $400 down the drain

wish Airlines would board the plane starting in the back first. Makes more sense and I think it would be faster, NO? Everything else was great!

Quick flight and helpful crew both on the ground and in the air. Went super easy and fast.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

The helpful attitude of the staff, and being a wheelchair passenger everyone was helpful and understanding. The trip was made comfortable by the upgraded seat which was given without my request, that was a great surprise. Thank you Delta.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Mi primera conexión se retrasó por lo cual perdí mi segunda conexión la cual salió adelantada

Crew was not friendly when I went to request a seat change.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

The flight crew was amazing. I’m very tall and they moved me to an exit row unsolicited!!! Amazing service.

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

Boarding in Seattle is always a mess. Sat in Deltas new domestic first class cabin. Everything was great except I found the seat cushion to be fairly uncomfortable. I’m a bigger guy so take that into mind (6’2” / 300 lbs.). Crew was meh.

Positive: Entertainment via phone on the short was great and my first time. Good food and wine and head phones for free. Negative: Seat hardly reclined on the long flight. Breakfast was an egg with a bun. No egg choices and rather have something sweet like bun/jam and Youghurt.

They did get us booked on a later flight, but it made us miss our connecting flight. So, we had to stay and another state overnight with no luggage or clothes. Because they kept our luggage at airport for next flight on the next day.

Flight was on time. Staff were friendly. I paid for Economy Plus but was required to check my standard carry-on luggage due to lack of space on the aircraft. This cost me 30 minutes, unexpectedly, in waiting at the baggage claim. This experience did not meet my expectations.

Crew is way too many times on the intercom re explaining the same thing

Amazing comfortable chairs great snacks super friendly staff pilots did excellent job. Smooth sailing all the way. Definitely be flying United more.

We waited too long to get water while the plane was on the Tarmac awaiting de-icing.

The plane was delayed coming in and on the tarmac. I was coming from another flight so it made for a very long day. The stewardess kept trying to slam the overhead bins closed and I was worried that she had damaged my new luggage. They ran out of snacks and lccdsddd me a hummus box which was nice. It took them a very long time to pick up the garbage so I could not go to the washroom and had little time. To prepare for disbarment. The TV system was hard to control from the armrest and picture wasn’t clear. The crew did apologize several times for the lateness. It took the Denver airport an unusually long time to de-ice the plane.

By in large it was a good experience. The flight crew was great and that's the most important to me. Boarding was fine.

It was fine. Everything ran on time, crew was great.

Staff friendly and app worked really well. Modest delays were frustrating

Average - flew with Jet Blue internal and it was far more comfortable and better food and entertainment. Notable difference

Flight from SBP to DFW 1. They rerouted us through PHX 2. Delayed flight out of SBP for 3 hrs so we missed our connection Downgrade on rerouted flight. Back of the plane, center seats, didn't sit together 4. Return flight out of DFW same exact thing. Delayed, missed connection, Downgrade + they lost our luggage! A complete mess.

On the new 319 NEO? seatback entertainment system did not work even when the flight attendant rebooted it. At least I had my cell phone to connect with wifi.

Good flights. Departure and arrivals were on time. DFW was a little problematic in that the Skytrain without prior notice bypassed the Echo terminal so that delayed my arrival at my connecting flight.

Do not eat the bagel! Otherwise, good albeit late, breakfast in first. Boarding downgrade only because flight was delayed due to plane change due to undisclosed problem with original aircraft. I did not use entertainment.

Because I can’t stand very long in one place, I was allowed to reword.

It was a good flight. Of course it was full, but it went well.

Overall the flights pretty good. The snacks we’re good and they were plenty of them. Both boarding and deplaning went quickly.

I had the exit seat with all the leg room I could ask for. Great!

I wish there were no credit card announcements. I paid hundreds of dollars, I don't need to pay again by sitting through advertisements.

Terrible. Seats are bad and the baggage policy is inconsistent

Everything was good, and most importantly on time. They have been extremely tardy in some of my flights

They lost my baggage on my connection flight, it’s been 24 hours since I put my claim in and still no update on my bags.

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

The only issues had were outside of Frontier’s control or weren’t expected. It was a two hour flight they completed fast. We landed almost an hour ahead of schedule. The issues with no entertainment or food weren’t issues since there was no expectations. The issue of the loud or crying babies was outside of frontiers control.

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

Smooth process and flight. My favorite kind. Uneventful and on-time!

Xmas Day- Flights were on time for departure and arrival, baggage check in and boarding process were hassle free, baggage also arrived without any delay. Satisfied customer on this journey.

It’s Frontier so they’d charge you for the air you breath if they can work out how but it was on time.

Why are you charged for everything possible?? I went to my flight 2hours early so I can get some food.. I went to the agent to ask them to check me in and print out boarding pass.. I was told they charge for that. What in the world is that about? I understand if I’m trying to check in over the phone yes by all means charge for service.. if I’m rite there at the building asking to get checked in and get charged for it, that’s uncalled for and asking for more money at every given possibility

Book cheap flights from Seattle to Denver

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Denver found on KAYAK in the last 72 hours.
5/7Tue
nonstopFrontier
2h 50mSEA-DEN
$29
4/30Tue
nonstopFrontier
2h 50mSEA-DEN
$31
5/6Mon
nonstopDelta
2h 40mSEA-DEN
$69
6/15Sat
nonstopDelta
2h 42mSEA-DEN
$109
4/29Mon
1 stopAmerican Airlines
5h 25mSEA-DEN
$115
7/2Tue
1 stopUnited Airlines
7h 24mSEA-DEN
$128
6/23Sun
nonstopAlaska Airlines
2h 44mSEA-DEN
$139
6/11Tue
2 stopsAlaska Airlines
21h 22mSEA-DEN
$213
5/25Sat
2 stopsUnited Airlines
12h 19mSEA-DEN
$217
5/31Fri
1 stopAmerican Airlines
11h 42mSEA-DEN
$259

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Last minute flights from Seattle to Denver

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 Seattle to Denver that are departing in the next 10 days.
4/21Sun
nonstopFrontier
2h 47mSEA-DEN
4/24Wed
nonstopFrontier
3h 09mDEN-SEA
$106
4/19Fri
nonstopFrontier
2h 50mSEA-DEN
4/22Mon
nonstopFrontier
3h 09mDEN-SEA
$117
4/17Wed
multi-stopAmerican Airlines
8h 24mSEA-DEN
4/19Fri
multi-stopAmerican Airlines
9h 02mDEN-SEA
$262
4/18Thu
nonstopDelta
2h 40mSEA-DEN
4/21Sun
nonstopDelta
3h 13mDEN-SEA
$297
4/17Wed
nonstopUnited Airlines
2h 44mSEA-DEN
4/17Wed
multi-stopUnited Airlines
6h 36mDEN-SEA
$306
4/18Thu
nonstopUnited Airlines
2h 48mSEA-DEN
4/18Thu
nonstopUnited Airlines
3h 03mDEN-SEA
$315
4/18Thu
multi-stopDelta
4h 50mSEA-DEN
4/21Sun
multi-stopDelta
5h 01mDEN-SEA
$316
4/19Fri
multi-stopAmerican Airlines
8h 24mSEA-DEN
4/21Sun
multi-stopAmerican Airlines
6h 09mDEN-SEA
$346
4/18Thu
multi-stopAlaska Airlines
8h 42mSEA-DEN
4/21Sun
multi-stopAlaska Airlines
5h 12mDEN-SEA
$819
4/17Wed
multi-stopAlaska Airlines
7h 47mSEA-DEN
4/24Wed
multi-stopAlaska Airlines
5h 12mDEN-SEA
$1,115

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Seattle - Denver Flights

Departure:

Seattle (SEA)United States

Destination:

Denver (DEN)United States

Return flight deals:

Denver - Seattle

Cabin classes:

$212
$338
$346
$70