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Cheap flights from Seattle to Denver from £63

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 18/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DEN
26 Dec — 2 Jan1
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 Monday or Tuesday and return on a Tuesday

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 21 December 2024.

Round-trip from

£82

One-way from

£63

Popular in

December

Cheapest in

January

Average price

£204
Frontier
  • Frontier
  • 17/1-3/2
  • Nonstop
  • 5h 52m total
  • Seattle to Denver
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Delta
  • Delta
  • 18/2
  • Nonstop
  • 2h 42m 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
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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 21 December 2024.

Mon 30/1220:19SEA - DEN
Nonstop2h 40mAlaska Airlines
Sat 11/107:00DEN - SEA
Nonstop3h 21mAlaska Airlines
Deal found 21/12£204
Mon 30/1217:05SEA - DEN
1 stop4h 53mDelta
Sat 11/106:25DEN - SEA
Nonstop3h 14mDelta
Deal found 21/12£212
Fri 27/1219:10SEA - DEN
Nonstop2h 42mUnited Airlines
Wed 8/111:50DEN - SEA
Nonstop3h 05mUnited Airlines
Deal found 20/12£260
Sat 21/1221:40SEA - DEN
2 stops13h 10mSouthwest
Thu 9/110:50DEN - SEA
Nonstop3h 00mSouthwest
Deal found 21/12£276

Find flights from Seattle to Denver within your budget

Customise 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 858,174 searches. Data last updated 21 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Fri 17/1

15:15-19:02

Nonstop2h 47m

Denver Intl

Mon 3/2

12:20-14:25

Nonstop3h 05m

£82

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 11/2

18:59-22:36

Nonstop2h 37m

Denver Intl

Sat 15/2

07:00-09:16

Nonstop3h 16m

£133

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 29/1

10:00-13:45

Nonstop2h 45m

Denver Intl

Wed 29/1

15:50-17:50

Nonstop3h 00m

£138

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 22/1

09:00-12:43

Nonstop2h 43m

Denver Intl

Tue 28/1

06:00-11:20

1 stop6h 20m

£145

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Thu 1/5

19:40-23:27

Nonstop2h 47m

Denver Intl

Tue 6/5

06:15-08:23

Nonstop3h 08m

£149

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Tue 18/2

20:35-00:17

Nonstop2h 42m

£63

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 26/2

08:05-13:54

1 stop4h 49m

£70

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Wed 15/1

09:00-12:43

Nonstop2h 43m

£71

SeattleDenver

SEA - DEN

SEADEN

Seattle/Tacoma Intl

Thu 20/3

05:00-08:40

Nonstop2h 40m

£75

Flights are sorted by cheapest return flights first.

Deals found on 20/12

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 return 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 return flight from Seattle to Denver. Price data was last updated on 13 December 2024.

The price you pay for your flight from Seattle to Denver may vary depending on when you book. For the best chance of a lower fare, look to book 69 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Seattle to Denver (average of £667). Flying from Seattle to Denver in July is currently the most expensive (average of £1,030). 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 21 December 2024.

One of the essential ways to save on airfare from Seattle to Denver is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at midday could potentially save you up to 41% on airfare.

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 21 December 2024.

The most flights from SEA to DEN are scheduled on a Saturday (35 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (11 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 inches 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 21 December 2024.
Read through reviews of airlines operating flights from Seattle to Denver, such as Alaska Airlines, Southwest and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very Good
4,814 reviews
Check prices

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

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
4,814 reviews
Southwest
8.1
Very Good
4,814 reviews
Check prices

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

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
9,537 reviews
Southwest
8.1
Very Good
4,814 reviews
Check prices

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

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
8,597 reviews
Southwest
8.1
Very Good
4,814 reviews
Check prices

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

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
9,039 reviews
Southwest
8.1
Very Good
4,814 reviews
Check prices

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

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
3,474 reviews
Southwest
8.1
Very Good
4,814 reviews
Check prices

Overall

8.1

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Boarding

8.2

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.

  • How popular is this Seattle to Denver flight route?

    Flights from Seattle/Tacoma Intl to Denver Intl have been viewed 16 times in the past calendar month.

  • What are the cheapest airlines flying from Seattle to Denver round-trip?

    Flying on Frontier is currently your cheapest option to Denver, with prices starting at £82. Additional return tickets that might be worth considering are offered by Alaska Airlines and Southwest, with the lowest prices starting at £133 and £138, respectively. 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 cheapet airlines for a one-way flight from Seattle to Denver are Delta (£63), Alaska Airlines (£70), and United Airlines (£71).

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

    No one likes to see their flight delayed. When booking a flight from Seattle to Denver consider choosing United Airlines (95%), Japan Airlines (92%) or ANA (91%) as they are the most reliable in getting you off to your destination on time.

  • 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 holiday 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, January is the cheapest month in which you can book a flight from Seattle to Denver (average of £667). Flying from Seattle to Denver in July is currently the most expensive (average of £1,030). 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.

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