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Cheap flights from Seattle to Denver from C$ 100

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 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
24 Dec — 31 Dec1
1 adult

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

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 19 December 2024.

Round-trip from

C$ 148

One-way from

C$ 100

Popular in

December

Cheapest in

January

Average price

C$ 367
Frontier
  • Frontier
  • 6/1-10/1
  • 1 total stop
  • 13h 40m total
  • Seattle to Denver
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Delta
  • Delta
  • 7/1
  • Nonstop
  • 2h 55m total
  • Seattle to Denver
Search Deals
High demand for flights, 9% potential price rise
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Best time to find cheap flights, 4% potential price drop
Search Deals
Average for round-trip flights in December 2024
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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 19 December 2024.

Tue 31/129:36 p.m.SEA - DEN
Nonstop2h 45mFrontier
Fri 10/112:10 p.m.DEN - SEA
Nonstop3h 09mFrontier
Deal found 18/12C$ 212
Tue 31/126:25 p.m.SEA - DEN
Nonstop2h 46mDelta
Wed 8/17:50 p.m.DEN - SEA
Nonstop3h 17mDelta
Deal found 18/12C$ 367
Tue 31/123:42 p.m.SEA - DEN
Nonstop2h 40mAlaska Airlines
Wed 8/17:00 a.m.DEN - SEA
Nonstop3h 19mAlaska Airlines
Deal found 18/12C$ 396
Tue 31/124:30 p.m.SEA - DEN
1 stop7h 05mUnited Airlines
Sat 11/111:50 a.m.DEN - SEA
Nonstop3h 05mUnited Airlines
Deal found 18/12C$ 397
Thu 19/1211:30 a.m.SEA - DEN
1 stop8h 05mSouthwest
Sun 5/14:55 p.m.DEN - SEA
2 stops7h 35mSouthwest
Deal found 18/12C$ 597

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 19 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Mon 6/1

8:20 p.m.-7:51 a.m.

1 stop10h 31m

Denver Intl

Fri 10/1

12:10 p.m.-2:19 p.m.

Nonstop3h 09m

C$ 148

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Mon 3/2

7:55 p.m.-11:42 p.m.

Nonstop2h 47m

Denver Intl

Fri 7/2

1:10 p.m.-3:23 p.m.

Nonstop3h 13m

C$ 199

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 25/1

6:30 a.m.-10:05 a.m.

Nonstop2h 35m

Denver Intl

Sat 1/2

9:10 a.m.-11:10 a.m.

Nonstop3h 00m

C$ 201

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 8/1

9:00 a.m.-12:43 p.m.

Nonstop2h 43m

Denver Intl

Sun 12/1

6:00 a.m.-11:20 a.m.

1 stop6h 20m

C$ 207

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 11/3

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

1 stop4h 49m

Denver Intl

Tue 18/3

7:00 a.m.-9:16 a.m.

Nonstop3h 16m

C$ 267

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 7/1

8:15 a.m.-12:10 p.m.

Nonstop2h 55m

C$ 100

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 18/2

5:02 a.m.-8:44 a.m.

Nonstop2h 42m

C$ 113

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 26/2

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

1 stop4h 49m

C$ 126

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Sat 18/1

5:35 a.m.-4:20 p.m.

2 stops9h 45m

C$ 205

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Mon 13/1

5:45 a.m.-1:30 p.m.

3 stops30h 45m

C$ 255

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/12

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 13 December 2024.

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 19 December 2024.

Unlike at noon, when flights are generally more expensive, you can save up to 40% on flights from Seattle to Denver by exploring options for tickets in the evening.

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 19 December 2024.

The most flights from SEA to DEN are scheduled on a Thursday (41 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (5 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 19 December 2024.
Peruse reviews from past customers who have flown with Delta, United Airlines and Frontier 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
4,836 reviews
Check prices

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,836 reviews
Southwest
8.1
Very good
4,836 reviews
Check prices

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,552 reviews
Southwest
8.1
Very good
4,836 reviews
Check prices

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,600 reviews
Southwest
8.1
Very good
4,836 reviews
Check prices

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
9,048 reviews
Southwest
8.1
Very good
4,836 reviews
Check prices

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Frontier
6.1
Okay
3,478 reviews
Southwest
8.1
Very good
4,836 reviews
Check prices

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 13 flights from Seattle/Tacoma Intl to Denver Intl, all of which are around 2h 43m 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 482 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, Frontier (C$ 148), Delta (C$ 199), and Southwest (C$ 201) offers the cheapest pricing from Seattle to Denver. Users have found that Frontier is 41% 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$ 100. However, be on the lookout for offers from Alaska Airlines and United Airlines, 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: United Airlines (95%), Japan Airlines (92%), ANA( 91%).

  • 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$ 331, our data indicates the cheapest price to be C$ 135. The most popular route (Seattle/Tacoma Intl - Denver Intl), is priced around C$ 168.

  • 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

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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 19 December 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapestC$ 79AverageC$ 159FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapestC$ 112AverageC$ 241FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
SouthwestCheapestC$ 189AverageC$ 248FlexibilityNo cancel feeOn-time63%
Search Southwest flights
Alaska AirlinesCheapestC$ 192AverageC$ 306FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
United AirlinesCheapestC$ 198AverageC$ 346FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights helps you search for flights from Seattle to Denver via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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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