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Cheap flights from Seattle to Cancún from C$ 218

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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CUN
28 May — 4 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Cancún

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Cancún
Explore the most affordable flight options available from Seattle to Cancún. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 April 2026.

Thu 28/57:50 p.m.
SEA
-
CUN
1 stop14h 14m
Frontier
Mon 8/63:22 p.m.
CUN
-
SEA
2 stops44h 26m
Frontier
Deal found 25/4C$ 630
Sun 24/57:25 a.m.
SEA
-
CUN
Nonstop5h 50m
Delta
Thu 28/59:14 a.m.
CUN
-
SEA
1 stop12h 41m
Delta
Deal found 23/4C$ 642
Sat 23/511:00 p.m.
SEA
-
CUN
1 stop11h 30m
Delta
Fri 29/56:03 a.m.
CUN
-
SEA
1 stop15h 52m
Delta
Deal found 27/4C$ 648
Sat 30/57:25 a.m.
SEA
-
CUN
Nonstop5h 50m
Delta
Fri 5/67:03 a.m.
CUN
-
SEA
1 stop14h 52m
Delta
Deal found 23/4C$ 656
Sat 30/511:00 p.m.
SEA
-
CUN
1 stop11h 30m
Delta
Sat 6/611:27 a.m.
CUN
-
SEA
1 stop10h 28m
Delta
Deal found 23/4C$ 661
Tue 2/611:05 p.m.
SEA
-
CUN
2 stops15h 30m
Delta
Tue 9/66:07 a.m.
CUN
-
SEA
2 stops12h 40m
Delta
Deal found 26/4C$ 662
Thu 28/55:30 a.m.
SEA
-
CUN
1 stop7h 35m
Delta
Mon 8/612:39 p.m.
CUN
-
SEA
1 stop9h 16m
Delta
Deal found 24/4C$ 668
Sat 23/511:00 p.m.
SEA
-
CUN
1 stop11h 30m
Delta
Sat 30/59:14 a.m.
CUN
-
SEA
1 stop12h 41m
Delta
Deal found 24/4C$ 675

Find flight deals from Seattle to Cancún

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Cancún (CUN). 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 28 April 2026.

Round-trip from

C$ 630

One-way from

C$ 218

Popular in

December

Cheapest in

October

Average price

C$ 898

Good one-way deal

C$ 442 or less
Frontier
  • Frontier
  • 28/5-8/6
  • 3 total stops
  • 63h 11m total
  • Seattle to Cancún
Search Deals
Volaris
  • Volaris
  • 3/5
  • 1 total stop
  • 10h 54m total
  • Seattle to Cancún
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Cancun.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Cancún 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 28 April 2026.
Use the filters below to find and compare flights from Seattle to Cancún that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Thu 28/5

5:30 a.m.-3:05 p.m.

1 stop7h 35m

Cancun

Mon 8/6

12:39 p.m.-7:55 p.m.

1 stop9h 16m

C$ 668

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Fri 5/6

7:59 p.m.-12:30 p.m.

2 stops14h 31m

Cancun

Tue 9/6

9:18 a.m.-10:05 p.m.

2 stops14h 47m

C$ 682

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Wed 13/5

5:30 a.m.-3:05 p.m.

1 stop7h 35m

Cancun

Mon 18/5

4:15 p.m.-12:12 a.m.

1 stop9h 57m

C$ 807
Cheapest one-way

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Sun 7/6

7:50 p.m.-12:04 p.m.

1 stop14h 14m

C$ 258
Quickest one-way

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Tue 26/5

7:25 a.m.-3:15 p.m.

Nonstop5h 50m

C$ 312

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Tue 19/5

7:25 a.m.-3:15 p.m.

Nonstop5h 50m

C$ 312

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Sun 24/5

7:25 a.m.-3:15 p.m.

Nonstop5h 50m

C$ 312

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Wed 27/5

7:25 a.m.-3:15 p.m.

Nonstop5h 50m

C$ 312

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Thu 28/5

7:25 a.m.-3:15 p.m.

Nonstop5h 50m

C$ 326

SeattleCancún

SEA - CUN

SEACUN

Seattle/Tacoma Intl

Fri 14/8

11:00 p.m.-3:28 p.m.

1 stop14h 28m

C$ 330

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/4

Sorted by cheapest first

Best time to book a flight from Seattle to Cancún

Have a flexible travel schedule? Discover the best time to fly to Cancún 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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Cancún

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

The price you pay for your flight from Seattle to Cancún may vary depending on when you book. For the best chance of a lower fare, look to book 24 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 Cancún?

Currently, October is the cheapest month in which you can book a flight from Seattle to Cancún (average of C$ 630). Flying from Seattle to Cancún in December is currently the most expensive (average of C$ 979). 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 CUN?

Find hourly flight availability from Seattle to Cancún. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 April 2026.

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

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

Reviews of airlines servicing Cancún

Get insights into the airlines that provide service to Cancún. 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 Cancún. Reviews last updated 28 April 2026.
Read through reviews of airlines operating flights from Seattle to Cancún, such as Alaska Airlines,Delta, andAeromexico. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,301 reviews
Check prices

Boarding

8.1

Overall

7.9

Food

7.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
7.9
Good
12,301 reviews
Alaska Airlines
7.9
Good
12,301 reviews
Check prices

Boarding

8.1

Overall

7.9

Food

7.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,463 reviews
Alaska Airlines
7.9
Good
12,301 reviews
Check prices

Boarding

8.1

Overall

7.9

Food

7.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Aeromexico
7.4
Good
1,541 reviews
Alaska Airlines
7.9
Good
12,301 reviews
Check prices

Boarding

8.1

Overall

7.9

Food

7.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Related info for your journey

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

    If you wish to fly to Cancún from Seattle, then you need to book flights from Seattle/Tacoma Intl to Cancun. There are 3 flights from Seattle/Tacoma Intl (SEA) to Cancun (CUN) per day to choose from. Flights to Cancún from Seattle/Tacoma Intl are available from 3 different airlines, which means you should have some options if you want to compare airfare deals. 5h 50m is how long a nonstop flight from Seattle to Cancun typically takes.

  • How popular is this Seattle to Cancún flight route?

    The Seattle/Tacoma Intl to Cancun flight path was viewed by 17 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 Seattle to Cancún?

    Delta can get you from Seattle to Cancún in just under 5h 50m. Your travel time will be generally consistent. The distance between Seattle and Cancún is about 4318 km. Most flights are nonstop.

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

    Aeromexico, at C$ 313, was found to be the cheapest airline from Seattle to Cancún.Alternate airlines to your destination round-trip include Delta and Alaska Airlines. You may be able to fly from Seattle to Cancún for 58% less than the average price by searching for these airlines.

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

    No one likes to see their flight delayed. When booking a flight from Seattle to Cancún consider choosing Delta (66%), Korean Air (66%) or Aeromexico (66%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Seattle to Cancún?

    On average you can expect to pay C$ 442 for a flight from Seattle to Cancún. The cheapest flight overall is C$ 442 while the most popular route, (Seattle/Tacoma Intl - Cancun) is currently priced at C$ 669.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Seattle to Cancún (average of C$ 630). Flying from Seattle to Cancún in December is currently the most expensive (average of C$ 979). 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 Cancún?

Book flights to Cancún if you plan to visit one of these locations
Holbox
Puerto Aventuras
Punta Sam

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Top 3 airlines flying from Seattle to Cancún

Discover the top 3 airlines that operate flights from Seattle to Cancún. 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 28 April 2026.
AirlineCheapestAverageFlexibilityOn-time
AeromexicoCheapestC$ 313AverageC$ 737FlexibilityNo cancel feeOn-timeN/A
Search Aeromexico flights
DeltaCheapestC$ 389AverageC$ 655FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapestC$ 641AverageC$ 876FlexibilityNo cancel feeOn-time75%
Search Alaska 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 Cancún?

Cheapflights helps you search for flights from Seattle to Cancún 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 Cancún?

Cheapflights simply makes it quick and affordable to book flights from Seattle to Cancún by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Yes, we can. To see specific flights from Seattle to Cancún with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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