Book Cheap United flight from Seattle (SEA) to Denver (DEN) from CA $151

Find The Best Day to Book a Cheap United Flights From Seattle to Denver

Cheapest United Flights from Seattle (SEA) to Denver (DEN)

The cheapest flights to Denver Intl. found within the past 7 days were CA $325 round trip and CA $151 one way. Prices and availability subject to change. Additional terms may apply.

Mon, Apr 13 - Wed, Apr 15
SEA
Seattle
DEN
Denver
CA $325 Roundtrip, found 6 days ago
CA $325
Roundtrip
found 6 days ago
Select United flight, departing Mon, Apr 13 from Seattle to Denver, returning Wed, Apr 15, priced at CA $325 found 6 days ago

Frequently asked questions

Can I catch a flight from Seattle - Tacoma Intl. Airport (SEA) to DEN right now?
For information on any present DEN quarantine requirements and travel advice, visit the Covid-19 Travel Advisor. Look before you arrange your flight, so you don't get caught out en route.
What terminal is United Airlines at Sea-Tac Airport?
While we can't say for certain exactly which terminal your United Airlines flight from SEA to Denver Airport will board from, we can tell you that it's highly likely you'll be disembarking at the main terminal.
Are there United Airlines non-stop flights from SEA to DEN?
In short, yes. Book a direct flight with United Airlines from Seattle - Tacoma Intl. Airport (SEA) to Denver Airport, and you won't have to worry about a stopover or catching a connecting flight.
How long is a United Airlines flight from SEA to DEN?
Your United Airlines flight should get you from SEA to DEN in about 3 hours and 48 minutes. If you're not a fan of speaking to other passengers while you're airborne, don't stress — you won't have to chitchat for too long.
What type of aircraft does United Airlines fly from SEA to DEN?
United Airlines normally operates the Boeing 737-800 or the Boeing 737 MAX 9 between Sea-Tac Airport and DEN.
How many direct and indirect flights does United Airlines fly from SEA to DEN?
You can decide between around 5 flights per day with United Airlines from Sea-Tac Airport to Denver Airport.
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 DIA airport, 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.

Grab a great United flight from SEA to DEN 

To find a great deal on United flights with Travelocity, simply enter your origin and destination airports, pick your travel dates, and hit search. From here, you can sort by price, flight duration, and arrival/departure time. You can also filter to find nonstop flights. 

Flying United Seattle to Denver gives you fights to choose from. With that direct flight time of , you’ll be touching down before you know it.  

 

Find cheap flights with United between Seattle and Denver 

United has a range of great fares on stacks of flights, and to find the most affordable for you, there are a few tricks you can try. Booking in advance, for example, is a great way to grab a fantastic deal. Also, choose the cheapest month, if you can. One-way flights from Seattle to Denver with United are April.  

The more flexible you are, the more affordable flights you’re likely to find. Consider one-way flights and connecting flights, as well as standard roundtrip and direct options. Even if you’re flying today, cheap last-minute flights are easy to find by entering your travel dates and hitting search.  

 

Reasons to book your United flights with Travelocity 

Travelocity makes it easy to book a seat, anywhere in the world. The vast inventory, fast search, and advanced filters put some of the best deals on the planet in one place. Whether you’re traveling on business, with friends, family, or on your own, take your pick from some fantastic options. And with free cancellation and pay later options, you can travel more and worry less.  

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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