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$43+ 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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 July 29, 2025.

Round-trip from

$102
(Priceline)

One-way from

$43
(FlightHub)

Popular in

December

Cheapest in

October

Average price

$216

Good round-trip deal

$139 or less

Good one-way deal

$126 or less
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. 0% potential increase in price ($0 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 29, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/296:27 amPDX - DEN
Nonstop2h 39mFrontier
Mon 9/110:29 pmDEN - PDX
Nonstop2h 46mFrontier
Deal found 7/29$102
This Priceline deal was found by Cheapflights users on 7/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/311:58 amGEG - DEN
Nonstop2h 19mFrontier
Tue 8/129:45 amDEN - GEG
Nonstop2h 21mFrontier
Deal found 7/27$117
This Frontier deal was found by Cheapflights users on 7/29. 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.
Mon 9/86:12 amSEA - DEN
Nonstop2h 56mFrontier
Sat 9/136:33 pmDEN - SEA
Nonstop3h 06mFrontier
Deal found 7/29$125
This Cheapflightsfares deal was found by Cheapflights users on 7/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/812:36 pmPAE - DEN
Nonstop2h 45mFrontier
Fri 8/159:45 amDEN - PAE
Nonstop3h 03mFrontier
Deal found 7/28$143
This Trip.com deal was found by Cheapflights users on 7/27. 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.
Sat 10/256:00 amSEA - DEN
Nonstop2h 51mMultiple Airlines
Mon 10/276:46 pmDEN - SEA
1 stop5h 18mMultiple Airlines
Deal found 7/27$152
This Hawaiian Airlines deal was found by Cheapflights users on 7/29. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/32:31 pmPDX - DEN
Nonstop2h 32mHawaiian Airlines
Wed 12/1011:30 amDEN - PDX
Nonstop2h 44mHawaiian Airlines
Deal found 7/29$157
This KAYAK deal was found by Cheapflights users on 7/29. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/251:35 pmSEA - DEN
Nonstop2h 46mHawaiian Airlines
Mon 10/276:46 pmDEN - SEA
1 stop5h 18mHawaiian Airlines
Deal found 7/29$161
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/243:15 pmSEA - DEN
Nonstop2h 41mDelta
Thu 9/257:49 pmDEN - SEA
Nonstop3h 12mDelta
Deal found 7/28$165
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/166:00 pmSEA - DEN
Nonstop3h 02mAlaska Airlines
Tue 9/2311:40 amDEN - SEA
1 stop7h 10mAlaska Airlines
Deal found 7/29$167
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/412:45 pmPSC - DEN
1 stop6h 01mDelta
Mon 9/85:45 amDEN - PSC
1 stop3h 58mDelta
Deal found 7/29$189
This Orbitz deal was found by Cheapflights users on 7/27. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/411:53 amGEG - DEN
Nonstop2h 19mMultiple Airlines
Sat 9/611:40 amDEN - GEG
1 stop5h 03mMultiple Airlines
Deal found 7/27$202
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/18:21 amPSC - DEN
1 stop8h 29mAlaska Airlines
Mon 11/38:02 pmDEN - PSC
1 stop5h 11mAlaska Airlines
Deal found 7/28$208

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 July 29, 2025.
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

PortlandDenver

PDX - DEN

PDXDEN

Portland

Thu 10/30

6:05 am-9:46 am

Nonstop2h 41m

Denver Intl

Sun 11/2

10:29 pm-12:16 am

Nonstop2h 47m

$102

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Thu 9/18

11:53 am-3:12 pm

Nonstop2h 19m

Denver Intl

Sun 9/21

9:38 am-10:58 am

Nonstop2h 20m

$119

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Fri 10/3

6:12 am-10:08 am

Nonstop2h 56m

Denver Intl

Mon 10/13

10:29 pm-12:31 am

Nonstop3h 02m

$126

EverettDenver

PAE - DEN

PAEDEN

Everett Paine Field

Fri 8/8

12:36 pm-4:21 pm

Nonstop2h 45m

Denver Intl

Fri 8/15

9:45 am-11:48 am

Nonstop3h 03m

$143

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 10/25

6:00 am-9:51 am

Nonstop2h 51m

Denver Intl

Mon 10/27

6:46 pm-11:04 pm

1 stop5h 18m

$152

PortlandDenver

PDX - DEN

PDXDEN

Portland

Sat 9/20

5:10 am-8:40 am

Nonstop2h 30m

Denver Intl

Sat 9/27

8:00 am-9:40 am

Nonstop2h 40m

$157

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 10/25

1:35 pm-5:21 pm

Nonstop2h 46m

Denver Intl

Mon 10/27

6:46 pm-11:04 pm

1 stop5h 18m

$161

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 9/24

3:15 pm-6:56 pm

Nonstop2h 41m

Denver Intl

Thu 9/25

7:49 pm-10:01 pm

Nonstop3h 12m

$165

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 9/16

6:00 pm-10:02 pm

Nonstop3h 02m

Denver Intl

Tue 9/23

11:40 am-5:50 pm

1 stop7h 10m

$167

PortlandDenver

PDX - DEN

PDXDEN

Portland

Wed 9/17

1:24 pm-8:27 pm

1 stop6h 03m

Denver Intl

Sat 9/20

11:40 am-1:23 pm

Nonstop2h 43m

$167

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

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, October is the cheapest month in which you can book a flight from State of Washington to Denver (average of $197). Flying from State of Washington to Denver in March is currently the most expensive (average of $278). 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 July 29, 2025.

When flying from State of Washington to Denver, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 July 29, 2025.

The most flights from USWA to DEN are scheduled on a Monday (53 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (30 on average).

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated July 29, 2025.
Read through reviews of airlines operating flights from Washington to Denver, such as Alaska Airlines, Southwest, and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,238 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,977 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,605 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,899 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 298 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from State of Washington to Denver one-way?

    $43 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Alaska Airlines and Hawaiian Airlines, with prices starting from $79 and $82, respectively.

  • 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 (77%), United Airlines (73%), Scandinavian Airlines( 73%).

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

    While on average a flight from State of Washington to Denver is generally $578, our data shows the cheapest flight currently is $79. When looking at the most popular route, (Seattle/Tacoma Intl - Denver Intl), you can expect to pay $95 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, October is the cheapest month in which you can book a flight from State of Washington to Denver (average of $197). Flying from State of Washington to Denver in March is currently the most expensive (average of $278). 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
Westminster
Black Hawk
Winter Park
Lakewood
Greeley
Cripple Creek
Brighton
Silverthorne
Golden
Thornton
Frisco
Grand Lake
Manitou Springs
Central City
Fort Morgan
Glendale
Copper Mountain
Wheat Ridge
Longmont
Broomfield

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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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$61Average$156FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$98Average$402FlexibilityNo cancel feeOn-time85%
DeltaCheapest$115Average$277FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$126Average$321FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$148Average$378FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$157Average$417FlexibilityNo cancel feeOn-time75%

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