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Cheap flights from Seattle to Denver from C$ 97

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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
25 Feb — 4 Mar1
1 adult

The best prices from Seattle/Tacoma Intl to Denver Intl are usually found in March or September, booked 69 days in advance, depart on a Monday or Tuesday and return on a Saturday

Cheap flight deals from Seattle to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 20 February 2025.

Round-trip from

C$ 195

One-way from

C$ 97

Popular in

December

Cheapest in

March

Average price

C$ 294

Good round-trip deal

C$ 186 or less

Good one-way deal

C$ 205 or less
Delta
  • Delta
  • 25/3-28/3
  • Nonstop
  • 6h 06m total
  • Seattle to Denver
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Delta
  • Delta
  • 6/4
  • Nonstop
  • 2h 45m total
  • Seattle to Denver
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 14 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Denver Intl.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Denver Intl.
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Find flight deals from Seattle to Denver

Cheapest flights from Seattle to Denver
Explore the most affordable flight options available from Seattle to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2025.

Tue 25/37:55 p.m.SEA - DEN
Nonstop2h 53mDelta
Fri 28/37:50 p.m.DEN - SEA
Nonstop3h 13mDelta
Deal found 19/2C$ 195
Sun 23/33:45 p.m.SEA - DEN
Nonstop2h 45mUnited Airlines
Thu 27/39:00 p.m.DEN - SEA
Nonstop3h 01mUnited Airlines
Deal found 20/2C$ 196
Tue 18/38:05 a.m.SEA - DEN
2 stops8h 20mSouthwest
Fri 28/310:50 p.m.DEN - SEA
Nonstop3h 00mSouthwest
Deal found 19/2C$ 273
Wed 26/21:36 p.m.SEA - DEN
Nonstop2h 49mFrontier
Wed 5/310:30 a.m.DEN - SEA
Nonstop3h 06mFrontier
Deal found 19/2C$ 288
Fri 2/53:51 p.m.SEA - DEN
1 stop4h 24mAlaska Airlines
Sat 3/56:37 p.m.DEN - SEA
1 stop4h 51mAlaska Airlines
Deal found 19/2C$ 321
Wed 26/21:36 p.m.SEA - DEN
Nonstop2h 49mMultiple Airlines
Tue 4/312:38 p.m.DEN - SEA
Nonstop3h 07mMultiple Airlines
Deal found 19/2C$ 330
Wed 5/38:05 a.m.SEA - DEN
1 stop4h 49mHawaiian Airlines
Wed 5/35:08 p.m.DEN - SEA
Nonstop3h 02mHawaiian Airlines
Deal found 19/2C$ 342

Find flights from Seattle to Denver within your budget

Customize your flight search to find flights from Seattle 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 629,999 searches. Data last updated 20 February 2025.

Fly from

Seattle

Fly to

Denver

Route

Depart

Return

Price

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 25/3

7:55 p.m.-11:48 p.m.

Nonstop2h 53m

Denver Intl

Fri 28/3

7:50 p.m.-10:03 p.m.

Nonstop3h 13m

C$ 195

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sun 23/3

3:45 p.m.-7:30 p.m.

Nonstop2h 45m

Denver Intl

Thu 27/3

9:00 p.m.-11:01 p.m.

Nonstop3h 01m

C$ 196

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 18/3

8:05 a.m.-5:25 p.m.

2 stops8h 20m

Denver Intl

Fri 28/3

10:50 p.m.-12:50 a.m.

Nonstop3h 00m

C$ 273

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Fri 2/5

3:51 p.m.-9:15 p.m.

1 stop4h 24m

Denver Intl

Sat 3/5

6:37 p.m.-10:28 p.m.

1 stop4h 51m

C$ 321

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 5/3

8:05 a.m.-1:54 p.m.

1 stop4h 49m

Denver Intl

Wed 5/3

5:08 p.m.-7:10 p.m.

Nonstop3h 02m

C$ 342

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sun 6/4

7:55 p.m.-11:40 p.m.

Nonstop2h 45m

C$ 97

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Mon 17/3

3:21 p.m.-6:59 p.m.

Nonstop2h 38m

C$ 98

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 8/4

6:15 a.m.-4:20 p.m.

2 stops9h 05m

C$ 119

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 5/4

4:16 p.m.-8:04 p.m.

Nonstop2h 48m

C$ 126

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 20/5

7:00 a.m.-2:59 p.m.

1 stop6h 59m

C$ 148

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/2

Showing 1-10 of 12 results
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Best time to book a flight from Seattle to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Seattle 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.

Travel insights for flights from Seattle to Denver

Get recent, data-driven insights about flights from Seattle to Denver including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Seattle to Denver?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Denver. Price data was last updated on 14 February 2025.

The best time to book flights from Seattle to Denver is 69 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Seattle to Denver?

Currently, August is the cheapest month in which you can book a flight from Seattle to Denver (average of C$ 320). Flying from Seattle to Denver in December is currently the most expensive (average of C$ 484). 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 SEA to DEN?

Find hourly flight availability from Seattle 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 20 February 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 31% on flights from Seattle to Denver by exploring options for tickets in the evening.

What is the cheapest day to fly from Seattle to Denver?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Denver. Price data was last updated on 16 February 2025.

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

Weekly flight availability from Seattle to Denver

Explore weekly flight availability from Seattle 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 20 February 2025.

The most flights from SEA to DEN are scheduled on a Thursday (41 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Denver by month

Plan your trip to Denver by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Denver ranges from 13.0 - 58.0 mm per month. May is typically the wettest month, when rainfall can reach 58.0 mm. January is typically the driest time to visit Denver when rainfall is around 13.0 mm.

Temperature in Denver by month

Plan your trip to Denver by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Denver, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

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 20 February 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Seattle to Denver to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,412 reviews
Check prices

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Food

7.1

Crew

8.7

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,412 reviews
Southwest
8.1
Very good
4,412 reviews
Check prices

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Food

7.1

Crew

8.7

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,691 reviews
Southwest
8.1
Very good
4,412 reviews
Check prices

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Food

7.1

Crew

8.7

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,227 reviews
Southwest
8.1
Very good
4,412 reviews
Check prices

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Food

7.1

Crew

8.7

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,412 reviews
Check prices

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Food

7.1

Crew

8.7

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,771 reviews
Southwest
8.1
Very good
4,412 reviews
Check prices

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Food

7.1

Crew

8.7

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Related info for your journey

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

  • What airports do I use to fly from Seattle to Denver?

    Booking a flight from Seattle/Tacoma Intl (SEA) to Denver Intl (DEN) is your only option if you wish to fly from Seattle to Denver. On a typical day, there are 26 flights from Seattle/Tacoma Intl to Denver Intl, all of which are around 2h 48m for a nonstop flight. You can also purchase a plane ticket from 5 airlines when you book a flight from Seattle/Tacoma Intl to Denver.

  • How popular is this Seattle to Denver flight route?

    This flight path from Seattle/Tacoma Intl to Denver Intl was viewed by 435 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 flying from Seattle to Denver round-trip?

    According to our current data, Delta (C$ 195), United Airlines (C$ 196), and Southwest (C$ 273) offers the cheapest pricing from Seattle to Denver. Users have found that Delta is 25% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Seattle to Denver one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as C$ 97. However, be on the lookout for offers from Alaska Airlines and Southwest, as they are both options that can get you from Seattle to Denver for a low price.

  • What are the most reliable airlines from Seattle to Denver?

    Before booking your flight to Denver from Seattle, check out the most reliable airlines to get you to your destination on time: Copa Airlines (93%), ANA (93%), Condor( 92%).

  • What are the cheapest flights from Seattle to Denver?

    Looking for the cheapest flight from Seattle to Denver? While on average our users pay C$ 663, our data indicates the cheapest price to be C$ 77. The most popular route (Seattle/Tacoma Intl - Denver Intl), is priced around C$ 271.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Denver?

    Currently, August is the cheapest month in which you can book a flight from Seattle to Denver (average of C$ 320). Flying from Seattle to Denver in December is currently the most expensive (average of C$ 484). 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

Travelling to a place near Seattle?

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Golden
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Alternative routes for Seattle to Denver

See prices for flight routes from nearby airports that may be better suited for you.
Bellingham to Denver flights

Top 5 airlines flying from Seattle to Denver

Discover the top 5 airlines that operate flights from Seattle 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 629,999 searches. Data last updated 20 February 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapestC$ 70AverageC$ 161FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapestC$ 111AverageC$ 244FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
SouthwestCheapestC$ 187AverageC$ 251FlexibilityNo cancel feeOn-time63%
Search Southwest flights
Alaska AirlinesCheapestC$ 190AverageC$ 303FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
United AirlinesCheapestC$ 196AverageC$ 351FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Seattle to Denver?

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Why should you use Cheapflights to find cheap flight tickets from Seattle to Denver?

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Denver for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Seattle to Denver with no change fees?

Yes! Cheapflights helps users easily find flights from Seattle to Denver with no change fees.

Can Cheapflights notify me if prices for flights from Seattle to Denver become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Denver from Seattle today and book when prices fit your budget.

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