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$111+ Cheap flights from Aurora, CO to Seattle (SEA)

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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SEA
Jul 20 — Jul 271
Mon 7/20
Mon 7/27
1 adult, Economy
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Cheapflights Tip: The best prices from Aurora to Seattle/Tacoma Intl are usually found in January or February, booked 27 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from Aurora to Seattle

Cheapest flights from Aurora to Seattle
Explore the most affordable flight options available from Aurora to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 20, 2026.

This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Tue 9/1510:29 pm
DEN
-
SEA
Nonstop2h 58m
Frontier
Wed 9/237:00 am
SEA
-
DEN
Nonstop2h 51m
Frontier
Deal found 6/15$170
This Frontier deal was found by Cheapflights users on 6/15. 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 9/57:45 am
DEN
-
SEA
Nonstop3h 03m
Frontier
Wed 9/167:00 am
SEA
-
DEN
Nonstop2h 51m
Frontier
Deal found 6/15$172
This Cheapflightsfares deal was found by Cheapflights users on 6/16. 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 9/187:45 am
DEN
-
SEA
Nonstop3h 06m
Frontier
Fri 9/257:00 am
SEA
-
DEN
Nonstop2h 51m
Frontier
Deal found 6/16$173
This Cheapflightsfares deal was found by Cheapflights users on 6/15. 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.
Mon 10/510:29 pm
DEN
-
SEA
Nonstop2h 58m
Frontier
Fri 10/97:41 pm
SEA
-
DEN
Nonstop2h 53m
Frontier
Deal found 6/15$175
This Cheapflightsfares deal was found by Cheapflights users on 6/16. 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.
Tue 8/187:45 am
DEN
-
SEA
Nonstop3h 03m
Frontier
Fri 8/213:19 pm
SEA
-
DEN
Nonstop2h 48m
Frontier
Deal found 6/16$176
This Frontier deal was found by Cheapflights users on 6/16. 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 9/2110:29 pm
DEN
-
SEA
Nonstop2h 58m
Frontier
Thu 9/247:41 pm
SEA
-
DEN
Nonstop2h 53m
Frontier
Deal found 6/16$177
This deal was found by Cheapflights users on 6/16. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/69:13 am
DEN
-
SEA
Nonstop3h 07m
Frontier
Mon 7/137:06 pm
SEA
-
DEN
Nonstop2h 52m
Frontier
Deal found 6/16$179
This Cheapflightsfares deal was found by Cheapflights users on 6/20. 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.
Wed 9/1610:29 pm
DEN
-
SEA
Nonstop2h 58m
Frontier
Mon 9/217:41 pm
SEA
-
DEN
Nonstop2h 53m
Frontier
Deal found 6/20$180
This Cheapflightsfares deal was found by Cheapflights users on 6/19. 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.
Tue 8/117:00 am
DEN
-
SEA
Nonstop3h 04m
Frontier
Tue 8/187:06 pm
SEA
-
DEN
Nonstop2h 52m
Frontier
Deal found 6/19$182
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Wed 8/127:00 am
DEN
-
SEA
Nonstop3h 04m
Frontier
Tue 8/187:41 pm
SEA
-
DEN
Nonstop2h 55m
Frontier
Deal found 6/15$183
This Frontier deal was found by Cheapflights users on 6/19. 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.
Tue 8/187:15 am
DEN
-
SEA
Nonstop3h 04m
Frontier
Sat 8/227:06 pm
SEA
-
DEN
Nonstop2h 52m
Frontier
Deal found 6/19$184
This Cheapflightsfares deal was found by Cheapflights users on 6/18. 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 8/2110:10 am
DEN
-
SEA
Nonstop3h 10m
Frontier
Sat 8/297:06 pm
SEA
-
DEN
Nonstop2h 52m
Frontier
Deal found 6/18$185

Find flight deals from Aurora to Seattle

Keep the following information in mind while searching for Aurora to Seattle flight deals. Data was last updated June 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$170
(Kiwi.com)

One-way from

$111
(Frontier)

Popular in

June

Cheapest in

January

Average price

$299
Provider with most accurate pricing for Denver Intl-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Seattle/Tacoma Intl flights.
Search Deals
From Aurora to Seattle/Tacoma Intl
Search Deals
One-way flight from Aurora to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($62 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Aurora to Seattle 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 June 20, 2026.
Use the filters below to find and compare flights from Aurora to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Tue 7/21

6:55 pm-11:15 pm

1 stop5h 20m

Seattle/Tacoma Intl

Wed 7/22

7:30 am-3:50 pm

2 stops7h 20m

$326
Quickest round-trip

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Fri 7/31

6:15 pm-8:17 pm

Nonstop3h 02m

Seattle/Tacoma Intl

Tue 8/4

4:26 pm-8:10 pm

Nonstop2h 44m

$326

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Sat 7/18

4:10 pm-11:15 pm

2 stops8h 05m

Seattle/Tacoma Intl

Sat 7/25

5:30 am-1:50 pm

2 stops7h 20m

$329

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 8/5

2:40 pm-9:15 pm

2 stops7h 35m

Seattle/Tacoma Intl

Wed 8/12

5:55 am-2:10 pm

2 stops7h 15m

$329

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Wed 8/26

1:30 pm-9:00 pm

1 stop8h 30m

Seattle/Tacoma Intl

Sat 9/5

11:35 am-8:55 pm

2 stops8h 20m

$330

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Tue 9/15

2:40 pm-9:15 pm

2 stops7h 35m

Seattle/Tacoma Intl

Tue 9/22

11:05 pm-8:10 am

1 stop8h 05m

$330

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Sat 8/1

4:10 pm-11:15 pm

2 stops8h 05m

Seattle/Tacoma Intl

Tue 8/4

5:55 am-2:10 pm

2 stops7h 15m

$335

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Tue 9/15

12:50 pm-8:15 pm

2 stops8h 25m

Seattle/Tacoma Intl

Wed 9/23

5:55 am-2:10 pm

2 stops7h 15m

$335

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Tue 11/24

6:45 am-8:59 am

Nonstop3h 14m

Seattle/Tacoma Intl

Fri 11/27

5:45 am-11:55 am

1 stop5h 10m

$336

DenverSeattle

DEN - SEA

DENSEA

Denver Intl

Mon 10/5

6:25 pm-1:35 am

2 stops8h 10m

Seattle/Tacoma Intl

Sat 10/10

2:10 pm-10:40 pm

1 stop7h 30m

$337

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Aurora to Seattle

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

What is the cheapest time of day to fly from 9UR to SEA?

Find hourly flight availability from Aurora to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 20, 2026.

One of the essential ways to save on airfare from Aurora to Seattle is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 20% on airfare.

Weekly flight availability from Aurora to Seattle

Explore weekly flight availability from Aurora to Seattle. 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 June 20, 2026.

The most flights from 9UR to SEA are scheduled on a Friday (46 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (28 on average).

How much does it cost to fly round-trip from Aurora to Seattle?

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

Use this chart to determine the cheapest time to fly round-trip from Aurora to Seattle. Price data was last updated on June 13, 2026.

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

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated June 20, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Southwest, andDelta from Aurora to Seattle 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.
Alaska Airlines
7.9
Good
12,549 reviews

Boarding

8.1

Food

7.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.
Alaska Airlines
7.9
Good
12,549 reviews
Alaska Airlines
7.9
Good
12,549 reviews

Boarding

8.1

Food

7.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.
Southwest
7.9
Good
4,242 reviews
Alaska Airlines
7.9
Good
12,549 reviews

Boarding

8.1

Food

7.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.
Delta
7.8
Good
8,419 reviews
Alaska Airlines
7.9
Good
12,549 reviews

Boarding

8.1

Food

7.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.
United Airlines
7.4
Good
9,864 reviews
Alaska Airlines
7.9
Good
12,549 reviews

Boarding

8.1

Food

7.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.
Frontier
5.6
Fair
2,878 reviews
Alaska Airlines
7.9
Good
12,549 reviews

Boarding

8.1

Food

7.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.

Related info for your journey

Find useful and relevant information for your journey from Aurora to Seattle. 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 Seattle from Aurora?

    If you book a flight to Seattle from Aurora, you will be flying to Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 37 flights from Aurora to Seattle/Tacoma Intl per day from 6 different airlines.

  • How popular is this Aurora to Seattle flight route?

    This flight path from Aurora to Seattle/Tacoma Intl was viewed by 122 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Aurora to Seattle?

    For as low as $326, Southwest can have you in Seattle from Aurora in 3h 02m. There are 1022 mi between Aurora and Seattle. This flight may include one or multiple stops.

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

    $32 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southwest and Delta, with prices starting from $63 and $70, respectively.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Aurora to Seattle on time: Korean Air (99%), Japan Airlines (91%), WestJet (90%).

  • What are the cheapest flights from Aurora to Seattle?

    While on average a flight from Aurora to Seattle is generally $868, our data shows the cheapest flight currently is $129. When looking at the most popular route, (Denver Intl - Seattle/Tacoma Intl), you can expect to pay $56 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Aurora to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Edmonds
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
Marysville

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Aurora to Seattle

Discover the top 6 airlines that operate flights from Aurora to Seattle. 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 June 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$55Average$183FlexibilityNo cancel feeOn-time62%
DeltaCheapest$82Average$260FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$88Average$220FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$116Average$335FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$117Average$337FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$126Average$294FlexibilityNo cancel feeOn-time75%

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