$34 Cheap Flights from Denver (DEN) to Seattle (SEA)

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Cheap Flights from Denver to Seattle (DEN-SEA)

Prices were available within the past 7 days and start at $34 for one-way flights and $76 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Sep 7 - Sat, Sep 14
DEN
Denver
SEA
Seattle
$76 Roundtrip, just found
$76
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Sep 7 from Denver to Seattle, returning Sat, Sep 14, priced at $76 just found
Frontier Airlines
Sat, Sep 21 - Mon, Sep 23
DEN
Denver
SEA
Seattle
$78 Roundtrip, just found
$78
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Sep 21 from Denver to Seattle, returning Mon, Sep 23, priced at $78 just found
Frontier Airlines
Sat, Aug 31 - Wed, Sep 4
DEN
Denver
SEA
Seattle
$82 Roundtrip, found 2 hours ago
$82
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Sat, Aug 31 from Denver to Seattle, returning Wed, Sep 4, priced at $82 found 2 hours ago
Frontier Airlines
Sat, Sep 7 - Sat, Sep 14
DEN
Denver
SEA
Seattle
$83 Roundtrip, just found
$83
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Sep 7 from Denver to Seattle, returning Sat, Sep 14, priced at $83 just found
Frontier Airlines
Wed, Aug 21 - Wed, Aug 28
DEN
Denver
SEA
Seattle
$84 Roundtrip, just found
$84
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Aug 21 from Denver to Seattle, returning Wed, Aug 28, priced at $84 just found
Frontier Airlines
Tue, Sep 3 - Wed, Sep 11
DEN
Denver
SEA
Seattle
$85 Roundtrip, found 2 days ago
$85
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Tue, Sep 3 from Denver to Seattle, returning Wed, Sep 11, priced at $85 found 2 days ago
Frontier Airlines
Thu, Sep 5 - Sat, Sep 14
DEN
Denver
SEA
Seattle
$86 Roundtrip, found 1 hour ago
$86
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Sep 5 from Denver to Seattle, returning Sat, Sep 14, priced at $86 found 1 hour ago
Frontier Airlines
Thu, May 30 - Sat, Jun 1
DEN
Denver
SEA
Seattle
$87 Roundtrip, found 2 hours ago
$87
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Thu, May 30 from Denver to Seattle, returning Sat, Jun 1, priced at $87 found 2 hours ago
Frontier Airlines
Tue, Jun 4 - Tue, Jun 11
DEN
Denver
SEA
Seattle
$88 Roundtrip, found 1 hour ago
$88
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Tue, Jun 4 from Denver to Seattle, returning Tue, Jun 11, priced at $88 found 1 hour ago
Frontier Airlines
Sat, Sep 7 - Sat, Sep 14
DEN
Denver
SEA
Seattle
$90 Roundtrip, just found
$90
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Sep 7 from Denver to Seattle, returning Sat, Sep 14, priced at $90 just found
Flights from Denver (DEN) to Seattle (SEA)
Origin airport
Denver Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Sun Country Airlines, United
Roundtrip price
$76
Distance
1022 mi

Denver to Seattle Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Denver to Seattle offer the perfect respite. Not only does exploring Seattle provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Denver to Seattle may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from DEN to SEA today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of Seattle are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to Seattle more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Seattle is $34 now!

Frequently asked questions

How much is a one-way flight from DEN to SEA?
Prepare to score a fantastic deal, because Denver flights to Seattle start from $34. This info is based on the lowest fare found on Expedia for this route departing in the next three months. This airfare is for an Frontier Airlines flight, departing from DEN on June 11 2024 and landing at Sea-Tac Airport. The price of this airfare was updated on May 7 2024 and has not changed since.
How long does it take to fly from DEN to Sea-Tac Airport?
A direct flight with United Airlines takes roughly 2 hours and 58 minutes. Jump on the 8:55PM flight from Denver Intl. Airport (DEN) and reach Seattle - Tacoma Intl. Airport (SEA) at 10:53PM. Get your hands on an epic deal on this and many other routes when you book your fare with Expedia.
Is it cheaper to buy a plane ticket from Denver Intl. Airport (DEN) to SEA last minute?
When it comes to booking your flights, it pays to be prepared. While you could pick up a deal on a Denver Airport to SEA flight at the last minute, fares usually don’t get cheaper as the date of departure nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to book a domestic flight is between 28 – 35 days ahead. For international flights it’s between three and four months.
What is the cheapest airline flying from DIA airport to Sea-Tac Airport in the next 90 days?
The cheapest airline flying from Denver to Seattle found on Expedia is Frontier Airlines, with fares starting at $34. This price is based on airfares found on Expedia with a departure date within the next 90 days. The flight leaves Denver Intl. Airport (DEN) on June 11 2024 and touches down at SEA. The pricing information was updated on May 7 2024 and has not changed since.
What's the cheapest price for a flight from DIA airport to Sea-Tac Airport next month?
The cheapest price for a one-way flight from Denver to Seattle over the next month is $39. If you plan to travel soon, now’s the time to snap up this fare. This ticket price was found after looking at all available flights on Expedia departing within the next 30 days. This airfare is for a one-way Frontier Airlines flight taking off from Denver Intl. Airport (DEN) on May 18 2024 and getting into SEA. Pricing info was updated on May 7 2024 and has not changed since.
What airline has the least delays from Denver Intl. Airport (DEN) to Seattle - Tacoma Intl. Airport (SEA)?
With an on-time performance rate of 96%, Delta Air Lines is the carrier that’s most likely to get you from DIA airport to Sea-Tac Airport without any travel delays. Flight delays can be an excuse to head to the airport bar. However, they can also cause you to miss an important connection or even ruin your vacation. Stay informed about delays by checking your flight status through the free Expedia App before you head for the airport. If you’re already at your gate and the delay will significantly affect your plans, visit your airline’s customer service desk to discover what your options are.
Can I find cheap nonstop flights from Denver Airport to SEA in the next three months?
The cheapest price we could find for a roundtrip nonstop flight from Denver to Seattle within the next 90 days is $68. This figure is based on all available flights on Expedia with a departure date in the next three months. This fare is for a flight via Frontier Airlines departing Denver Intl. Airport (DEN) on May 18 2024 and arriving at SEA, with a return journey on May 25 2024. This price was last updated on May 7 2024.To locate nonstop cheap flights taking off from DEN to SEA, use our filters once you’ve hit search. Simply click “Nonstop” under “Filter by” on the left-hand side of the page to go over your options. Your results will be arranged from the lowest price, so you’ll see the cheapest nonstop airfares first. You can also check out prices for nearby days by clicking “Flexible dates” on the same page.
What airports do you fly into for Seattle from Denver?
From Denver, you can reach Seattle through Seattle - Tacoma Intl. Airport (SEA), Renton Municipal Airport (RNT) and Boeing Field Airport (BFI). Research which airport is the right option for you before you make a decision. If you opt for Seattle - Tacoma Intl. Airport (SEA), it’s roughly 12 mi south of the downtown area. Use the cash you save when booking your airfare with Expedia to enjoy the city’s well-known attractions, such as Space Needle and Pike Place Market.
What are the most popular departure times for flights from Denver Intl. Airport (DEN) to Sea-Tac Airport?
For United Airlines flights making their way from DEN to SEA, the peak period is between 11:00 AM - 12:00 PM. If you want to avoid any holdups, head off in the morning. This gives you a better chance to escape the air traffic that builds up in the skyways as the day goes by.
Can I change the date of my flight from DIA airport to Sea-Tac Airport?
Quickly and easily make changes to your Denver Airport to Sea-Tac Airport ticket by logging in to the Expedia Trips portal. But before amending dates or times, check the conditions and rules in your itinerary to learn what the airline will let you do and if charges apply. Some airlines charge a change fee per person, on top of any difference in prices. But if you booked in the last 24 hours, you may be able to cancel for free and book new flights. You can also take a look at our Customer Service portal for more info and to chat with our Virtual Agent.
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