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$33+ Cheap flights from Washington to Denver (DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
1 adult, Economy
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Cheap flight deals from Washington to Denver

Keep the following information in mind while searching for Washington to Denver flight deals. Data was last updated January 14, 2026.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$71
(Super.com)

One-way from

$33
(Priceline)

Popular in

April

Cheapest in

January

Average price

$168

Good round-trip deal

$184 or less

Good one-way deal

$114 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Denver Intl flights.
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From Washington to Denver Intl
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One-way flight from Washington to Denver Intl
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Highest demand for flights based on searches. 6% potential increase in price ($15 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Washington to Denver Intl.
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Price to beat on a one-way flight from Washington to Denver Intl.
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Find flight deals from Washington to Denver

Cheapest flights from Washington to Denver
Explore the most affordable flight options available from Washington to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 14, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2012:00 pm
SEA
-
DEN
Nonstop2h 50m
Frontier
Sun 3/18:45 am
DEN
-
SEA
Nonstop3h 10m
Frontier
Deal found 1/13$72
This Frontier deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2712:00 pm
SEA
-
DEN
Nonstop2h 50m
Frontier
Sun 3/18:45 am
DEN
-
SEA
Nonstop3h 10m
Frontier
Deal found 1/13$73
This Super.com deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/211:16 pm
SEA
-
DEN
Nonstop2h 51m
Frontier
Thu 2/269:52 am
DEN
-
SEA
Nonstop3h 09m
Frontier
Deal found 1/12$77
This Booking.com deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/612:34 pm
SEA
-
DEN
Nonstop2h 51m
Frontier
Sun 2/89:10 am
DEN
-
SEA
Nonstop3h 09m
Frontier
Deal found 1/11$78
This Trip.com deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/512:34 pm
SEA
-
DEN
Nonstop2h 51m
Multiple Airlines
Sat 2/77:00 am
DEN
-
SEA
Nonstop3h 11m
Multiple Airlines
Deal found 1/12$86
This Expedia deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/211:16 pm
SEA
-
DEN
Nonstop2h 51m
Multiple Airlines
Tue 2/247:00 am
DEN
-
SEA
Nonstop3h 10m
Multiple Airlines
Deal found 1/13$88
This Trip.com deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/512:34 pm
SEA
-
DEN
Nonstop2h 51m
Multiple Airlines
Mon 2/911:49 am
DEN
-
SEA
1 stop7h 54m
Multiple Airlines
Deal found 1/12$90
This Kiwi.com deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1612:04 pm
PDX
-
DEN
Nonstop2h 37m
Frontier
Wed 3/1810:30 pm
DEN
-
PDX
1 stop11h 28m
Frontier
Deal found 1/12$116
This Expedia deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/133:52 pm
PDX
-
DEN
1 stop7h 07m
Multiple Airlines
Mon 3/169:10 am
DEN
-
PDX
Nonstop2h 59m
Multiple Airlines
Deal found 1/12$117
This Kiwi.com deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/143:52 pm
PDX
-
DEN
1 stop7h 07m
Multiple Airlines
Thu 3/199:10 am
DEN
-
PDX
Nonstop2h 59m
Multiple Airlines
Deal found 1/12$118
This Frontier deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1512:04 pm
PDX
-
DEN
Nonstop2h 37m
Frontier
Tue 3/1710:40 pm
DEN
-
PDX
1 stop11h 18m
Frontier
Deal found 1/12$119
This Kiwi.com deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1612:04 pm
PDX
-
DEN
Nonstop2h 37m
Frontier
Thu 3/199:10 am
DEN
-
PDX
Nonstop2h 59m
Frontier
Deal found 1/13$122

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 14, 2026.
Use the filters below to find and compare flights from Washington to Denver that are best for you.

Fly from

Washington

Fly to

Denver

Route

Depart

Return

Price

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Thu 2/26

8:14 pm-11:59 pm

Nonstop2h 45m

Denver Intl

Tue 3/3

7:00 am-9:10 am

Nonstop3h 10m

$117

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Mon 3/23

5:00 am-8:38 am

Nonstop2h 38m

Denver Intl

Wed 3/25

8:54 pm-10:59 pm

Nonstop3h 05m

$117

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Mon 2/23

8:14 pm-11:59 pm

Nonstop2h 45m

Denver Intl

Fri 2/27

7:52 pm-10:00 pm

Nonstop3h 08m

$117

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Mon 2/23

3:16 pm-6:56 pm

Nonstop2h 40m

Denver Intl

Wed 2/25

7:00 am-9:10 am

Nonstop3h 10m

$117

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Fri 2/20

3:16 pm-6:56 pm

Nonstop2h 40m

Denver Intl

Tue 2/24

7:00 am-9:10 am

Nonstop3h 10m

$117

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 2/7

7:54 pm-11:35 pm

Nonstop2h 41m

Denver Intl

Sun 2/8

7:00 am-9:11 am

Nonstop3h 11m

$117

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 2/21

3:16 pm-6:56 pm

Nonstop2h 40m

Denver Intl

Tue 2/24

7:00 am-9:10 am

Nonstop3h 10m

$117

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 2/24

5:40 pm-9:23 pm

Nonstop2h 43m

Denver Intl

Tue 3/3

11:38 am-4:57 pm

1 stop6h 19m

$127

PortlandDenver

PDX - DEN

PDXDEN

Portland

Tue 2/17

11:25 am-2:50 pm

Nonstop2h 25m

Denver Intl

Sat 2/21

8:10 am-10:05 am

Nonstop2h 55m

$137

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 3/4

7:10 am-5:48 pm

1 stop9h 38m

Denver Intl

Thu 3/5

7:52 pm-10:00 pm

Nonstop3h 08m

$137

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/12

Showing 1-10 of 60 results
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Best time to book a flight from Washington to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Denver

What is the cheapest month to book a flight from State of Washington to Denver?

Currently, January is the cheapest month in which you can book a flight from State of Washington to Denver (average of $37). Flying from State of Washington to Denver in July is currently the most expensive (average of $99). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WA to DEN?

Find hourly flight availability from Washington to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 14, 2026.

One of the essential ways to save on airfare from State of Washington to Denver is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 7% on airfare.

What is the cheapest day to fly from State of Washington to Denver?

Use this chart to determine the cheapest time to fly round-trip from Washington to Denver. Price data was last updated on January 10, 2026.

Travelers seeking maximum savings on their State of Washington to Denver flight should consider departing on Friday at noon when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from State of Washington to Denver

Explore weekly flight availability from Washington to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 14, 2026.

The most flights from USWA to DEN are scheduled on a Monday (32 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).

Related info for your journey

Find useful and relevant information for your journey from Washington to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Denver from Washington?

    Most people fly into Denver Intl (DEN) if they book a flight to Denver from Washington. Denver Intl is conveniently located just 18.5 mi from Denver’s city center.

  • How popular is this State of Washington to Denver flight route?

    The Washington to Denver Intl flight path was viewed by 271 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from State of Washington to Denver?

    Airlines like Alaska Airlines, Southwest, and United Airlines fly from State of Washington to Denver in about 2h 25m. The time it takes to get you to your destination is usually consistent. There are 989 mi between State of Washington and Denver. Generally, flights for this route are nonstop.

  • What are the most popular routes from State of Washington to Denver?

    When deciding which route to take from State of Washington to Denver consider Seattle/Tacoma Intl - Denver Intl, Portland - Denver Intl or Spokane - Denver Intl as they are the most popular.

  • What are the most reliable airlines from State of Washington to Denver?

    Before booking your flight to Denver from State of Washington, check out the most reliable airlines to get you to your destination on time: ANA (90%), Copa Airlines (89%), United Airlines( 89%).

  • What are the cheapest flights from State of Washington to Denver?

    While on average a flight from State of Washington to Denver is generally $890, our data shows the cheapest flight currently is $58. When looking at the most popular route, (Seattle/Tacoma Intl - Denver Intl), you can expect to pay $58 for that flight.

  • Can I find deals for flights from Washington to Denver that include hotel bookings?

    Yes. In addition to deals on Washington to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Denver.

  • Can I find deals for business class flights from Washington to Denver?

    Yes. Cheapflights offers flight deals from Washington to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to Denver?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Denver (average of $37). Flying from State of Washington to Denver in July is currently the most expensive (average of $99). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk
Lakewood
Broomfield
Westminster
Golden
Greeley
Lone Tree
Wheat Ridge
Cripple Creek
Winter Park
Silverthorne
Central City
Centennial
Manitou Springs
Frisco
Fort Morgan
Brighton
Evergreen
Idaho Springs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington to Denver

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Washington to Denver

Discover the top 6 airlines that operate flights from Washington to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$158FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$87Average$370FlexibilityNo cancel feeOn-time85%
DeltaCheapest$109Average$262FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$123Average$323FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$135Average$401FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$141Average$340FlexibilityNo cancel feeOn-time69%

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