Fly United Airlines from SEA to DEN as low as $69

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Cheapflights users flying from Seattle to Denver on United Airlines typically fly into Denver Intl and depart from Seattle/Tacoma Intl. Select your dates above for pricing.

Were you looking for United Airlines flights from Denver Intl to Seattle/Tacoma Intl?

United Airlines flights from Seattle to Denver in 2023

Popular in	June
Cheapest in	January
Average price (all airlines)	$238
One-way from	$69
Round-trip from	$148

Highest demand for flights from Seattle/Tacoma Intl to Denver Intl; 21% potential price increase.

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Best time to find cheap flights from Seattle/Tacoma Intl to Denver Intl; 3% potential price drop.

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Average price for all Seattle/Tacoma Intl to Denver Intl flights (one-way and round-trip).

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Cheapest one-way United Airlines flight from Seattle/Tacoma Intl to Denver Intl

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Cheapest round-trip United Airlines flight from Seattle/Tacoma Intl to Denver Intl

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Can I get a flight from Seattle to Denver on United Airlines for under $300?

There are 11 flights available on United Airlines from Seattle to Denver for under $300. These prices can change based on many factors including date and time. To find SEA-DEN flight prices for your dates, click here.

How do most travelers feel about United Airlines?

When planning your SEA-DEN trip, keep in mind that United Airlines is typically rated 5.8/10. This rating comes from 762 reviews by Cheapflights users who have traveled with United Airlines.

Cheapest United Airlines flights from Seattle to Denver

Wed 1/108:20 amSEA - DEN

Nonstop2h 44mUnited Airlines

Mon 1/157:45 amDEN - SEA

Nonstop3h 10mUnited Airlines

Deal found 12/7$148

Pick Dates

Wed 1/35:08 amSEA - DEN

Nonstop2h 41mUnited Airlines

Wed 1/107:06 pmDEN - SEA

Nonstop3h 11mUnited Airlines

Deal found 12/6$158

Pick Dates

Wed 1/35:08 amSEA - DEN

Nonstop2h 41mUnited Airlines

Wed 1/107:45 amDEN - SEA

1 stop8h 39mUnited Airlines

Deal found 12/6$178

Pick Dates

Direct flights from Seattle to Denver on United Airlines

Wed 1/108:20 amSEA - DEN

Nonstop2h 44mUnited Airlines

Mon 1/157:45 amDEN - SEA

Nonstop3h 10mUnited Airlines

Deal found 12/7$148

Pick Dates

Wed 1/35:08 amSEA - DEN

Nonstop2h 41mUnited Airlines

Wed 1/107:06 pmDEN - SEA

Nonstop3h 11mUnited Airlines

Deal found 12/6$158

Pick Dates

Tue 12/265:08 amSEA - DEN

Nonstop2h 41mUnited Airlines

Tue 1/97:45 amDEN - SEA

Nonstop3h 10mUnited Airlines

Deal found 12/6$318

Pick Dates

Last minute deals on Cheapflights

Wed 12/132:55 pmSEA - DEN

2 stops17h 04mUnited Airlines

Fri 12/155:40 pmDEN - SEA

1 stop8h 20mUnited Airlines

Deal found 12/7$516

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Tue 12/129:30 amSEA - DEN

2 stops22h 29mUnited Airlines

Thu 12/1410:00 amDEN - SEA

1 stop6h 00mUnited Airlines

Deal found 12/6$519

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Sat 12/165:30 amSEA - DEN

2 stops13h 05mUnited Airlines

Mon 12/181:41 pmDEN - SEA

1 stop8h 54mUnited Airlines

Deal found 12/6$566

Pick Dates

One-way United Airlines flights to Denver from Seattle

Tue 1/94:29 pmSEA - DEN

Nonstop2h 42mUnited Airlines

Deal found 12/7$69

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Sat 1/63:55 pmSEA - DEN

Nonstop2h 44mUnited Airlines

Deal found 12/6$79

Pick Dates

Thu 3/73:10 pmSEA - DEN

1 stop7h 24mUnited Airlines

Deal found 12/7$84

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Browse thousands of different options on Cheapflights for your next trip

Fly from Seattle to Denver on another airline
Consider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on December 7, 2023.

Alaska Airlines flights from Seattle/Tacoma Intl to Denver Intl

Frontier flights from Seattle/Tacoma Intl to Denver Intl

Other United Airlines flights from Seattle
Browse through other United Airlines flights departing from Seattle. Flight routes are based on user searches made on Cheapflights and were last updated on December 7, 2023.

United Airlines flights from Seattle to Denver

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Complete your trip
Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.

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Other popular destinations in North America
If Denver is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on December 7, 2023.

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Popular flights with United Airlines
Browse through some of the most popular routes that United Airlines offers at this time. Flights are based on user searches made on Cheapflights and were last updated on December 7, 2023.

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United Airlines flights from New York to Las Vegas

United Airlines flights from Washington, D.C. to Los Angeles

United Airlines flights from Boston to Denver

United Airlines flights from Newark to Cancún

United Airlines flights from Newark to San Francisco

United Airlines flights from Washington, D.C. to San Francisco

United Airlines flights from Newark to Miami

United Airlines flights from New York to Los Angeles

United Airlines flights from Boston to San Francisco

United Airlines flights from Newark to Santo Domingo

United Airlines flights from Los Angeles to New York

United Airlines flights from Newark to Oranjestad

United Airlines flights from Newark to Fort Myers

United Airlines flights from New York to Denver

United Airlines flights from Los Angeles to Denver

United Airlines flights from Newark to Denver

United Airlines flights from Los Angeles to Newark

See what others are saying about United Airlines

United Airlines

7.4

Good

12,577 reviews

Check prices

Overview

Recent reviews

4.5

Mediocre|Jan 2018

nothing

10.0

Wonderful|Dec 2017

Fast & efficient

Not much

1.9

Poor|Oct 2021

i missed the cutoff for luggage by 1 minute in eugene. the woman told me i have to bring my big suitcase with me and check it on the plane but i would be fine . There were several others and getting through was long and by the time we got to the gate they had just shut it . i was out on the next flight from eugene to san francisco but could not get on a flight from san francisco to san diego until late in the afternoon. i had to be in mexico to give a talk and they said that there would be no room on the first connecting flight. So i purchased a ticket on line to be sure I could get to my talk. I went to the United Agent in Eugene behind the counter and explained what i had done and she promised me she would be sure my suitcase made the new flight . It did not . i am on my way to Tecate Mexico and my suitcase with all my clothes and information for my talk is in san francisco . She was certain and said for sure the suitcase would be with me and I am very distressed -I used 55,000 miles to make sure i was on time and now i don’t have my suitcase abs necessary things and no one seems to know how to get it to my hotel .

7.6

Good|Nov 2017

I was very cold!

9.0

Wonderful|Apr 2019

Crowded planes.

2.0

Poor|Dec 2022

I wasn’t able to make my flight because my first flight from Nashville (BNA) was delayed for mechanical error (someone’s chair wasn’t able to stay in the upright position), so when I arrived to New York/Newark (EWR) the connecting flight was gone. Since it was the last flight heading to Norfolk (ORF) that night, I had to be rerouted to Richmond (RIC), which is a 90 minute drive to my home. I will admit the lady working the counter was helpful in getting me that replacement flight ticket and put me in first class. Although I think there needs to be someway of halting a connecting flight if the previous leg is delayed. Yet I can see that would probably start a chain reaction of missing times, which helps no one. I just wish it were avoidable, but thankfully I arrived safe after all the headaches. The replacement flight got delayed too, but that’s because it was arriving late and held the crew for the flight I was getting on, but that’s a story for another time…

8.0

Very good|Nov 2021

Having problems connecting with my MacBook Pro. Found later that Safari is no supported and had to use the Firefox or google apps. Could have had that in the available brochures, I did not see it. Also lots of empty seats where UA was trying to sell but would not let the 'lower' class passengers move into them even though we were pilots going into a exit row. Once the door closes they are not going to sell anymore of those seats so why not do 'upgrades' for passengers to the 'bit' more expensive class. I get the first class barrier but when in a cattle car. . . . . . . .

2.0

Poor|Feb 2018

Work with me on ticket

10.0

Wonderful|Jul 2021

The flight attendant, Angel lives up to her name- what an angel! I love her! She was so helpful and attentive and patient. My daughter spilled some juice on her shorts and not only did Angel help me clean up my daughter, she did not hesitate to pick up my daughter’s dirty shorts and neatly packaged it away for me! She went above and beyond her future to provide THE BEST customer service and flight I’ve had in over 20+ years of flying. Thank you, Angel, please continue to excel at exceptional customer service professional!

5.9

Fair|Jul 2021

An airplane that still has screens (which I appreciated!) but every time there was a PA announcement the sound would cut out for a good 10 minutes AFTER the announcement was over. Eventually I stopped trying to watch a movie because I was missing so much. Also, I really wish they wouldn't rush to get everyone on a plane when the crew is delayed and doesn't get onboard until 5 minutes before they're scheduled to leave. You know that then we're going to sit there for 30 minutes waiting for them to get ready and find us a new takeoff slot, so why didn't you just delay the boarding too? United's Basic Economy is also a scam, but at least I got a window seat. And we all know there are worse options (Spirit).

1 out of 4193

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Cheapflights users flying from Seattle to Denver on United Airlines typically fly into Denver Intl and depart from Seattle/Tacoma Intl. Select your dates above for pricing.

Were you looking for United Airlines flights from Denver Intl to Seattle/Tacoma Intl?

United Airlines flights from Seattle to Denver in 2023

Find detailed information about United Airlines flights from Seattle to Denver. Explore the options provided by United Airlines to plan your journey from Seattle to Denver. Data last updated December 7, 2023.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

Can I get a flight from Seattle to Denver on United Airlines for under $300?

How do most travelers feel about United Airlines?

Cheapest United Airlines flights from Seattle to Denver

Direct flights from Seattle to Denver on United Airlines

Last minute deals on Cheapflights

One-way United Airlines flights to Denver from Seattle

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Seattle to Denver on another airline
Consider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on December 7, 2023.

Consider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on December 7, 2023.

Other United Airlines flights from Seattle
Browse through other United Airlines flights departing from Seattle. Flight routes are based on user searches made on Cheapflights and were last updated on December 7, 2023.

Browse through other United Airlines flights departing from Seattle. Flight routes are based on user searches made on Cheapflights and were last updated on December 7, 2023.

Complete your trip
Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.

Complete your trip to Denver by adding a car rental and/or hotel reservation to your travel itinerary.

Other airlines servicing Seattle and Denver
Choose from other airlines serving Seattle and Denver.

Choose from other airlines serving Seattle and Denver.

Other popular destinations in North America
If Denver is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on December 7, 2023.

If Denver is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on December 7, 2023.

Popular flights with United Airlines
Browse through some of the most popular routes that United Airlines offers at this time. Flights are based on user searches made on Cheapflights and were last updated on December 7, 2023.

Browse through some of the most popular routes that United Airlines offers at this time. Flights are based on user searches made on Cheapflights and were last updated on December 7, 2023.

See what others are saying about United Airlines

Overview

Recent reviews

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Flights

United Airlines flights from Seattle to Denver (SEA - DEN)

Cheapflights users flying from Seattle to Denver on United Airlines typically fly into Denver Intl and depart from Seattle/Tacoma Intl. Select your dates above for pricing.

Were you looking for United Airlines flights from Denver Intl to Seattle/Tacoma Intl?

United Airlines flights from Seattle to Denver in 2023

Find detailed information about United Airlines flights from Seattle to Denver. Explore the options provided by United Airlines to plan your journey from Seattle to Denver. Data last updated December 7, 2023.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

Can I get a flight from Seattle to Denver on United Airlines for under $300?

How do most travelers feel about United Airlines?

Cheapest United Airlines flights from Seattle to Denver

Direct flights from Seattle to Denver on United Airlines

Last minute deals on Cheapflights

One-way United Airlines flights to Denver from Seattle

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Seattle to Denver on another airlineConsider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on December 7, 2023.

Consider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on December 7, 2023.

See what others are saying about United Airlines

Overview

100% Free

Book with Flexibility

Travel Smart

Fly from Seattle to Denver on another airline
Consider alternative airlines that service the Denver area. Flight routes are based on user searches made on Cheapflights and were last updated on December 7, 2023.