$139 United Cheap Flights from Denver to Seattle

Find The Best Day To Fly from Denver to Seattle

Amazing United DEN to SEA Flight Deals

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $134 round trip and $139 one way. Prices and availability subject to change. Additional terms may apply.

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Frequently asked questions

Can I catch a flight from Denver Airport to Sea-Tac Airport right now?
For info on any current Seattle - Tacoma Intl. Airport (SEA) travel advice and quarantine requirements, visit our Covid-19 Travel Advisor. Look before you book your flight, so you don’t get caught up en route.
What terminal is United Airlines at Denver Airport?
Flights usually take off from the main terminal at Denver Intl. Airport (DEN) if you’ve booked a seat with United Airlines. Landing at Seattle - Tacoma Intl. Airport (SEA)? Touch base with your airline (or do some online research) to find out which terminal you’ll be exiting the plane at.
Are there United Airlines non-stop flights from DEN to SEA?
In short, yes. Lock in a nonstop flight with United Airlines from Denver Intl. Airport (DEN) to Sea-Tac Airport, and you won’t have to worry about stopovers or catching a connecting flight.
How long is a United Airlines flight from DEN to SEA?
Bring that book on board you haven’t had time to read. A flight from Denver Airport to SEA with United Airlines takes roughly 4 hours and 10 minutes. You’ll have enough time to immerse yourself in the gripping storyline.
What type of aircraft does United Airlines fly from DEN to SEA?
When you take to the skies between DEN and SEA with United Airlines, you’ll usually be doing it aboard the Boeing 737-800. The airline also operates the Airbus A319 on this flight path.
How many direct and indirect flights does United Airlines fly from DEN to SEA?
You’ll have lots of choice if you’d prefer to fly with United Airlines from DEN to SEA. Currently, it offers about 5 flights each day.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to SEA, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.
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Discover our best United flight from Denver DEN to Seattle SEA 

To find the best deals on flights to Denver from Seattle with United, just enter your travel dates, filter by United, and hit search. You’ll find 6 flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Denver DEN to Seattle SEA with United 

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $134 to $151, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way United flights from Denver DEN to Seattle SEA 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from Denver to Seattle costs from $139. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Seattle SEA from  Denver DEN with United 

To find a cheap United flight from Denver DEN to Seattle SEA, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on United flights from Denver DEN to Seattle SEA 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as January, or if you book a flight with a stopover. 

 

Find nonstop flights from Denver DEN to Seattle SEA with United 

If you’re keen to be on Seattle soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around 3 hour(s) 2 min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for United flights from Denver DEN to Seattle SEA 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Seattle SEA from  Denver DEN with United on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

United Airports
Hop on a(n) United flight today by flying to many destinations out of these domestic and international airports:
Airport Code
Country
Airport Name
Number of Flights
ORDUSAO'Hare Intl.227
DENUSADenver Intl.226
IAHUSAGeorge Bush Intercontinental136
IADUSAWashington Dulles Intl.100
SFOUSASan Francisco Intl.64
LAXUSALos Angeles Intl.23
EWRUSALiberty Intl.20
FRADEUFrankfurt Intl.19
NRTJPNNarita Intl.19
PEKCHNCapital Intl.16

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Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
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