DEN - SEA

$109 Find Cheap United Airlines Flights from Denver to Seattle

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Flights Deals

Cheap United Airlines Flight Deals from Denver to Seattle

 
Here are some of the best deals found on KAYAK recently from United Airlines for round-trip flights from Denver to Seattle 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.

Recent round-trip United Airlines flight deals from Denver to Seattle

KAYAK's recommended round-trip United Airlines deals departing in the coming months from Denver to Seattle.
Discover the best prices for you by selecting your travel dates on KAYAK.
United Airlines Logo
8:20 pm - 10:15 pmDEN-SEA
2h 55mnonstop
United Airlines Logo
7:59 pm - 11:50 pmSEA-DEN
2h 51mnonstop
$207United Airlines
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Wed, Jun 18 - Sun, Jun 22
United Airlines Logo
5:30 am - 10:48 amDEN-SEA
6h 18m1 stop
United Airlines Logo
7:00 pm - 10:51 pmSEA-DEN
2h 51mnonstop
$213United Airlines
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Wed, Jul 9 - Wed, Jul 16
United Airlines Logo
7:45 pm - 12:59 amDEN-SEA
6h 14m1 stop
United Airlines Logo
7:59 pm - 11:50 pmSEA-DEN
2h 51mnonstop
$217United Airlines
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Wed, Jun 18 - Sat, Jun 21
United Airlines Logo
7:45 pm - 12:59 amDEN-SEA
6h 14m1 stop
United Airlines Logo
7:59 pm - 11:50 pmSEA-DEN
2h 51mnonstop
$227United Airlines
Find Deal
Wed, Jun 18 - Sun, Jun 22
United Airlines Logo
7:16 pm - 12:59 amDEN-SEA
6h 43m1 stop
United Airlines Logo
5:40 pm - 12:24 amSEA-DEN
5h 44m1 stop
$237United Airlines
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Tue, May 20 - Wed, May 21
United Airlines Logo
4:05 pm - 6:06 pmDEN-SEA
3h 01mnonstop
United Airlines Logo
7:00 am - 2:59 pmSEA-DEN
6h 59m1 stop
$243United Airlines
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Tue, May 13 - Wed, May 14
United Airlines Logo
9:00 pm - 10:59 pmDEN-SEA
2h 59mnonstop
United Airlines Logo
5:07 am - 8:48 amSEA-DEN
2h 41mnonstop
$250United Airlines
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Fri, Aug 29 - Mon, Sep 1
United Airlines Logo
5:59 pm - 10:59 pmDEN-SEA
6h 00m1 stop
United Airlines Logo
5:07 am - 8:48 amSEA-DEN
2h 41mnonstop
$260United Airlines
Find Deal
Fri, Aug 29 - Mon, Sep 1
United Airlines Logo
7:45 am - 1:43 pmDEN-SEA
6h 58m1 stop
United Airlines Logo
2:40 pm - 9:34 pmSEA-DEN
5h 54m1 stop
$267United Airlines
Find Deal
Tue, May 13 - Fri, May 16
United Airlines Logo
1:56 pm - 3:52 pmDEN-SEA
2h 56mnonstop
United Airlines Logo
5:07 am - 8:48 amSEA-DEN
2h 41mnonstop
$277United Airlines
Find Deal
Fri, Sep 5 - Mon, Sep 8
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Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$109
Average price round-trip$207
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 13% increase in price.
Flight from Denver to Seattle
(price for this month)

When to Book Flights with United Airlines from Denver to Seattle

Average price per month
Flight prices as travel date approaches

FAQs for flying to Seattle with United Airlines

  • How far in advance should I book tickets for a flight with United Airlines from Denver to Seattle?

    Generally, when trying to get a below average price for your ticket, try to book around 9 days before departure. For the cheapest possible price, our data suggests booking 82 days before departure.

  • Is United Airlines the cheapest airline to fly with from Denver to Seattle?

    With an average price of $302 return, United Airlines is not the cheapest airline to fly from Denver to Seattle with. Instead, for the lowest price, our data suggests flying with Frontier, where a return flight costs $145 on average.

  • What is the cheapest United Airlines flight from Denver to Seattle?

    In the last 3 days, the lowest price for a flight with United Airlines from Denver to Seattle was $154 for a return flight and $92 for a one-way flight.

  • Does United Airlines fly direct to Seattle from Denver?

    Yes, United Airlines does offer direct flights for the route, with around 11 flights per week.

  • What’s the cheapest day of the week to fly from Denver to Seattle with United Airlines?

    On average, the cheapest day of the week to fly from Denver to Seattle with United Airlines is Monday, when prices are around $93. The most expensive day is generally Thursday, where the average price is around $120.

  • What’s the cheapest month to fly from Denver to Seattle with United Airlines?

    The cheapest month for United Airlines flights to Seattle from Denver is generally June, where plane tickets cost $163 on average. If possible, try to avoid the most expensive months of February and March, where tickets cost $203 and $203 respectively.

United Airlines Customer Reviews

7.4
GoodBased on 8,696 verified guest reviews
7.3Comfort
7.7Boarding
6.6Food
8.1Crew
7.1Entertainment

Pros +
Cons -

Show reviews that mention
Traveler rating:
Sort by:
V
8.0 Very good
XNA-DEN
Everything
D
10.0 Wonderful
DEN-FLL
No issues, great flight, great crew
V
10.0 Wonderful
IAD-TYS
Friendly crew, all very smooth
V
8.0 Very good
FRA-IAD
Crew friendly and efficient. Nobody seated next to me
B
2.0 Poor
YHZ-EWR
Our flights got changed from United to Air Canada and our purchased seats did not get transferred so we had to pay for seats twice. I brought it up with Air Canada and they stated I had to go back and chase it with United. The united seats were $21 Canadian each and Air Canada were $56 each so we have paid $77 for each seat. Very unhappy
V
10.0 Wonderful
SFO-HKG
Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍
V
8.0 Very good
ORD-SFO
A bit rush for transit. Food and entertainment are not available
V
8.0 Very good
YUL-ORD
So far so good but food and entertainment are not available for this flight
D
10.0 Wonderful
ORD-YUL
Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.
L
8.0 Very good
SFO-BOS
Good

Everything you need to know for your flight from Denver to Seattle

Other airlines flying from Denver to Seattle

Flight deals from the most popular airlines with KAYAK users flying the route

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