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$58+ 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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
Jul 16 — Jul 231
Wed 7/16
Wed 7/23
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 11, 2025.

Round-trip from

$103
(Cheapflightsfares)

One-way from

$58
(Cheapflightsfares)

Popular in

December

Cheapest in

October

Average price

$208

Good round-trip deal

$148 or less

Good one-way deal

$131 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 ($2 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% 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 11, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/10. 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.
Sun 7/276:35 amPDX - DEN
Nonstop2h 39mFrontier
Sat 8/29:36 pmDEN - PDX
Nonstop2h 48mFrontier
Deal found 7/10$103
This Frontier deal was found by Cheapflights users on 7/9. 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 10/3112:53 pmPAE - DEN
Nonstop2h 46mFrontier
Mon 11/39:48 amDEN - PAE
Nonstop3h 10mFrontier
Deal found 7/9$109
This Frontier deal was found by Cheapflights users on 7/10. 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.
Thu 7/2411:58 amGEG - DEN
Nonstop2h 19mFrontier
Tue 7/299:45 amDEN - GEG
Nonstop2h 21mFrontier
Deal found 7/10$111
This Southwest deal was found by Cheapflights users on 7/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/205:00 pmPDX - DEN
Nonstop2h 30mSouthwest
Sat 9/278:00 amDEN - PDX
Nonstop2h 40mSouthwest
Deal found 7/10$114
This Trip.com deal was found by Cheapflights users on 7/8. 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.
Tue 8/197:00 amPDX - DEN
Nonstop2h 37mHawaiian Airlines
Tue 8/266:17 pmDEN - PDX
1 stop5h 27mHawaiian Airlines
Deal found 7/8$132
This United Airlines deal was found by Cheapflights users on 7/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/65:15 amGEG - DEN
Nonstop2h 17mUnited Airlines
Wed 8/137:40 pmDEN - GEG
Nonstop2h 23mUnited Airlines
Deal found 7/9$133
This Kiwi.com deal was found by Cheapflights users on 7/9. 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.
Thu 8/214:40 pmSEA - DEN
Nonstop2h 47mHawaiian Airlines
Mon 8/256:17 pmDEN - SEA
1 stop4h 19mHawaiian Airlines
Deal found 7/9$133
This Southwest deal was found by Cheapflights users on 7/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/114:20 pmSEA - DEN
Nonstop2h 40mSouthwest
Mon 9/157:40 pmDEN - SEA
1 stop5h 35mSouthwest
Deal found 7/9$134
This Frontier deal was found by Cheapflights users on 7/10. 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.
Sat 8/26:25 amSEA - DEN
Nonstop2h 49mFrontier
Sun 8/310:29 pmDEN - SEA
Nonstop3h 05mFrontier
Deal found 7/10$135
This Delta deal was found by Cheapflights users on 7/10. 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.
Tue 9/163:15 pmSEA - DEN
Nonstop2h 41mDelta
Wed 9/2412:55 pmDEN - SEA
1 stop4h 45mDelta
Deal found 7/10$139
This iWofly deal was found by Cheapflights users on 7/9. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/68:17 pmSEA - DEN
Nonstop2h 42mMultiple Airlines
Wed 8/135:50 pmDEN - SEA
Nonstop3h 00mMultiple Airlines
Deal found 7/9$141
This Orbitz deal was found by Cheapflights users on 7/10. 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.
Wed 8/136:07 pmGEG - DEN
1 stop4h 52mAlaska Airlines
Tue 8/196:00 amDEN - GEG
1 stop7h 29mAlaska Airlines
Deal found 7/10$142

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 11, 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

Sun 7/27

6:35 am-10:14 am

Nonstop2h 39m

Denver Intl

Sat 8/2

9:36 pm-11:24 pm

Nonstop2h 48m

$103

EverettDenver

PAE - DEN

PAEDEN

Everett Paine Field

Fri 10/31

12:53 pm-4:39 pm

Nonstop2h 46m

Denver Intl

Mon 11/3

9:48 am-11:58 am

Nonstop3h 10m

$109

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Thu 7/24

11:58 am-3:17 pm

Nonstop2h 19m

Denver Intl

Tue 7/29

9:45 am-11:06 am

Nonstop2h 21m

$111

PortlandDenver

PDX - DEN

PDXDEN

Portland

Sat 9/20

5:00 pm-8:30 pm

Nonstop2h 30m

Denver Intl

Sat 9/27

8:00 am-9:40 am

Nonstop2h 40m

$114

PortlandDenver

PDX - DEN

PDXDEN

Portland

Tue 8/19

7:00 am-10:37 am

Nonstop2h 37m

Denver Intl

Tue 8/26

6:17 pm-10:44 pm

1 stop5h 27m

$132

SpokaneDenver

GEG - DEN

GEGDEN

Spokane

Wed 8/6

5:15 am-8:32 am

Nonstop2h 17m

Denver Intl

Wed 8/13

7:40 pm-9:03 pm

Nonstop2h 23m

$133

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Thu 8/21

4:40 pm-8:27 pm

Nonstop2h 47m

Denver Intl

Mon 8/25

6:17 pm-9:36 pm

1 stop4h 19m

$133

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Thu 9/18

5:00 am-8:40 am

Nonstop2h 40m

Denver Intl

Mon 9/22

5:25 am-11:35 am

1 stop7h 10m

$134

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 8/2

6:25 am-10:14 am

Nonstop2h 49m

Denver Intl

Sun 8/3

10:29 pm-12:34 am

Nonstop3h 05m

$135

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 9/16

3:15 pm-6:56 pm

Nonstop2h 41m

Denver Intl

Wed 9/24

12:55 pm-4:40 pm

1 stop4h 45m

$139

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/8

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 11, 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 11, 2025.

The most flights from USWA to DEN are scheduled on a Thursday (56 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 11, 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

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,249 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,951 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,562 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,846 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 292 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?

    $58 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on United Airlines and Southwest, with prices starting from $67 and $67, 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: United Airlines (80%), ANA (76%), Copa Airlines( 68%).

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

    While on average a flight from State of Washington to Denver is generally $612, our data shows the cheapest flight currently is $94. When looking at the most popular route, (Seattle/Tacoma Intl - Denver Intl), you can expect to pay $114 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 Washington?

Book flights to Washington if you plan to visit one of these locations
Westminster
Black Hawk
Winter Park
Lakewood
Cripple Creek
Golden
Brighton
Silverthorne
Thornton
Frisco
Broomfield
Grand Lake
Manitou Springs
Central City
Fort Morgan
Glendale
Copper Mountain
Wheat Ridge
Longmont
Idaho Springs

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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 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$57Average$160FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$98Average$409FlexibilityNo cancel feeOn-time85%
DeltaCheapest$112Average$273FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$125Average$323FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$148Average$382FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$157Average$410FlexibilityNo cancel feeOn-time75%

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