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$129+ Cheap flights from Key Largo, FL 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 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SEA
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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The best prices from Key Largo to Seattle/Tacoma Intl are usually found in October or September, booked 80 days in advance, depart on a Thursday or Friday and return on a Tuesday

Cheap flight deals from Key Largo to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Key Largo (KE9) to Seattle (SEA). 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 December 18, 2024.

Round-trip from

$239
(Trip.com)

One-way from

$129
(Alaska Airlines)

Popular in

June

Cheapest in

October

Average price

$421
From Key Largo to Seattle/Tacoma Intl
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One-way flight from Key Largo to Seattle/Tacoma Intl
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High demand for flights, 13% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in December 2024
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Find flight deals from Key Largo to Seattle

Cheapest flights from Key Largo to Seattle
Explore the most affordable flight options available from Key Largo to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This Frontier deal was found by Cheapflights users on 12/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/258:00 amMIA - SEA
1 stop11h 37mFrontier
Thu 1/303:15 pmSEA - MIA
1 stop7h 39mFrontier
Deal found 12/18$298
This American Airlines deal was found by Cheapflights users on 12/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/247:30 pmMIA - SEA
Nonstop6h 52mAmerican Airlines
Wed 1/810:17 pmSEA - MIA
Nonstop5h 43mAmerican Airlines
Deal found 12/17$322
This CheapOair deal was found by Cheapflights users on 12/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/258:00 amMIA - SEA
1 stop11h 37mMultiple Airlines
Mon 1/62:16 pmSEA - MIA
1 stop14h 13mMultiple Airlines
Deal found 12/17$360
This Delta deal was found by Cheapflights users on 12/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/255:29 pmMIA - SEA
Nonstop7h 04mDelta
Thu 1/307:15 amSEA - MIA
Nonstop5h 50mDelta
Deal found 12/18$377
This Alaska Airlines deal was found by Cheapflights users on 12/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/317:07 pmMIA - SEA
1 stop15h 58mAlaska Airlines
Wed 1/87:56 amSEA - MIA
Nonstop5h 59mAlaska Airlines
Deal found 12/18$386
This Cheapflightsfares deal was found by Cheapflights users on 12/18. 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.
Sat 12/218:21 pmMIA - SEA
1 stop17h 27mSun Country Air
Tue 12/316:34 pmSEA - MIA
1 stop13h 32mSun Country Air
Deal found 12/18$446
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Tue 12/244:55 pmMIA - SEA
1 stop8h 53mUnited Airlines
Wed 1/17:04 amSEA - MIA
1 stop10h 34mUnited Airlines
Deal found 12/17$476
This Mytrip deal was found by Cheapflights users on 12/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/315:47 pmMIA - SEA
2 stops33h 23mSpirit Airlines
Wed 1/82:16 pmSEA - MIA
2 stops19h 44mSpirit Airlines
Deal found 12/18$533

Find flights from Key Largo to Seattle within your budget

Customize your flight search to find flights from Key Largo 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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

MiamiSeattle

MIA - SEA

MIASEA

Miami

Fri 1/31

5:55 pm-9:52 pm

Nonstop6h 57m

Seattle/Tacoma Intl

Fri 2/7

3:15 pm-1:54 am

1 stop7h 39m

$239

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 1/9

10:00 am-12:19 am

1 stop17h 19m

Seattle/Tacoma Intl

Mon 1/13

5:55 pm-11:29 pm

3 stops26h 34m

$240

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 1/9

5:15 pm-9:19 pm

Nonstop7h 04m

Seattle/Tacoma Intl

Mon 1/13

7:15 am-4:05 pm

Nonstop5h 50m

$257

MiamiSeattle

MIA - SEA

MIASEA

Miami

Wed 3/5

6:25 am-12:36 pm

1 stop9h 11m

Seattle/Tacoma Intl

Thu 3/13

2:02 pm-5:16 am

1 stop12h 14m

$261

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 1/16

5:55 pm-9:52 pm

Nonstop6h 57m

Seattle/Tacoma Intl

Mon 1/20

10:51 pm-6:15 pm

1 stop16h 24m

$266

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 1/16

7:30 pm-11:26 pm

Nonstop6h 56m

Seattle/Tacoma Intl

Mon 1/20

10:17 pm-7:00 am

Nonstop5h 43m

$277

MiamiSeattle

MIA - SEA

MIASEA

Miami

Wed 2/5

6:10 am-1:32 pm

1 stop10h 22m

Seattle/Tacoma Intl

Sun 3/9

11:59 pm-11:17 am

1 stop8h 18m

$296

MiamiSeattle

MIA - SEA

MIASEA

Miami

Tue 1/21

8:45 am-5:50 pm

2 stops12h 05m

Seattle/Tacoma Intl

Sun 1/26

5:05 am-8:35 pm

2 stops12h 30m

$346

MiamiSeattle

MIA - SEA

MIASEA

Miami

Tue 5/6

12:20 pm-9:29 pm

1 stop12h 09m

Seattle/Tacoma Intl

Sun 5/11

10:38 am-11:46 pm

1 stop10h 08m

$400

MiamiSeattle

MIA - SEA

MIASEA

Miami

Thu 1/16

5:15 pm-9:19 pm

Nonstop7h 04m

$129

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 19 results
1
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Best time to book a flight from Key Largo to Seattle

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

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

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

Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Seattle. Price data was last updated on December 13, 2024.

To ensure you get the cheapest price possible for a flight from Key Largo to Seattle, you should look to book at least 80 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Key Largo to Seattle (average of $238). Flying from Key Largo to Seattle in July is currently the most expensive (average of $411). 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 KE9 to SEA?

Find hourly flight availability from Key Largo 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 December 18, 2024.

When flying from Key Largo to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Key Largo to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Key Largo to Seattle. Price data was last updated on February 25, 2024.

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

Rainfall in Seattle by month

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

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

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

If weather is an important factor for your trip to Seattle, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 December 18, 2024.
Read reviews from past customers who have flown Alaska Airlines, Frontier and American Airlines from Key Largo to Seattle. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Entertainment

7.7

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
4,848 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Entertainment

7.7

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
9,554 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Entertainment

7.7

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
8,604 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Entertainment

7.7

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.

JetBlue
7.4
Good
3,279 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Entertainment

7.7

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
9,055 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Entertainment

7.7

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 Key Largo 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 Key Largo?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Key Largo to Seattle. 7 airlines have flights to Seattle/Tacoma Intl from Key Largo on a regular basis. Booking flights from Key Largo to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 1 inbound flight from Key Largo per day.

  • How popular is this Key Largo to Seattle flight route?

    Within the past month, 22 users have taken a look at flights from Key Largo to Seattle/Tacoma Intl.

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

    $129 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Frontier and Spirit Airlines, with prices starting from $130 and $133, respectively.

  • What are the most reliable airlines from Key Largo to Seattle?

    No one likes to see their flight delayed. When booking a flight from Key Largo to Seattle consider choosing GOL (77%), American Airlines (75%) or Qatar Airways (75%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Key Largo to Seattle?

    Looking for the cheapest flight from Key Largo to Seattle? While on average our users pay $750, our data indicates the cheapest price to be $128. The most popular route (Miami - Seattle/Tacoma Intl), is priced around $174.

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

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

  • How can I find direct flights from Key Largo to Seattle?

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

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

    Yes. Cheapflights offers flight deals from Key Largo 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.

  • What is the cheapest month to book a flight from Key Largo to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Key Largo to Seattle (average of $238). Flying from Key Largo to Seattle in July is currently the most expensive (average of $411). 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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Top 6 airlines flying from Key Largo to Seattle

Discover the top 6 airlines that operate flights from Key Largo 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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$150Average$320FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$156Average$298FlexibilityNo cancel feeOn-time65%
DeltaCheapest$193Average$391FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$199Average$425FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$253Average$544FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$256Average$524FlexibilityNo cancel feeOn-time71%
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