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Cheap flights from Seattle to Mexico City from £320

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 28/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MEX
17 Jul — 24 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Mexico City

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Mexico City
Explore the most affordable flight options available from Seattle to Mexico City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 June 2026.

Fri 28/823:00
SEA
-
MEX
1 stop9h 45m
Multiple Airlines
Sun 30/811:55
MEX
-
SEA
1 stop23h 40m
Multiple Airlines
Deal found 15/6£326
Sun 16/812:35
SEA
-
MEX
1 stop10h 35m
Multiple Airlines
Wed 9/919:45
MEX
-
SEA
1 stop23h 41m
Multiple Airlines
Deal found 16/6£353
Fri 28/823:00
SEA
-
MEX
2 stops20h 50m
Volaris
Sun 30/813:50
MEX
-
SEA
2 stops22h 15m
Volaris
Deal found 15/6£449
Wed 30/1221:10
SEA
-
MEX
1 stop8h 15m
Volaris
Wed 13/112:05
MEX
-
SEA
1 stop9h 10m
Volaris
Deal found 17/6£455
Thu 16/709:30
SEA
-
MEX
Nonstop5h 40m
Delta
Tue 21/706:01
MEX
-
SEA
1 stop7h 32m
Delta
Deal found 15/6£499
Fri 17/709:30
SEA
-
MEX
Nonstop5h 40m
Delta
Mon 20/720:15
MEX
-
SEA
1 stop17h 18m
Delta
Deal found 15/6£499
Fri 24/709:30
SEA
-
MEX
Nonstop5h 40m
Delta
Fri 31/706:01
MEX
-
SEA
1 stop7h 32m
Delta
Deal found 12/6£500
Fri 7/809:30
SEA
-
MEX
Nonstop5h 40m
Delta
Wed 12/815:55
MEX
-
SEA
1 stop21h 38m
Delta
Deal found 12/6£502
Fri 7/809:30
SEA
-
MEX
Nonstop5h 40m
Delta
Fri 14/806:01
MEX
-
SEA
1 stop7h 32m
Delta
Deal found 12/6£506
Fri 17/709:30
SEA
-
MEX
Nonstop5h 40m
Delta
Thu 23/706:01
MEX
-
SEA
1 stop7h 32m
Delta
Deal found 16/6£507

Find flight deals from Seattle to Mexico City

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Mexico City (MEX). 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 17 June 2026.

Round-trip from

£326

One-way from

£320

Popular in

December

Cheapest in

September

Average price

£472
28/8-30/8
  • 28/8-30/8
  • 2 total stops
  • 33h 25m total
  • Seattle to Mexico City
Search Deals
United Airlines
  • United Airlines
  • 28/6
  • 2 total stops
  • 20h 56m total
  • Seattle to Mexico City
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£42 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Seattle to Mexico City 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 17 June 2026.
Use the filters below to find and compare flights from Seattle to Mexico City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Fri 7/8

09:30-16:10

Nonstop5h 40m

Mexico City Benito Juarez

Thu 13/8

06:01-12:33

1 stop7h 32m

£502

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Fri 17/7

09:30-16:10

Nonstop5h 40m

Mexico City Benito Juarez

Sat 25/7

07:55-12:33

1 stop29h 38m

£508

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Mon 7/12

09:30-17:00

Nonstop5h 30m

Mexico City Benito Juarez

Wed 16/12

21:00-12:10

1 stop17h 10m

£604
Fastest return journey

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Wed 9/9

09:30-16:05

Nonstop5h 35m

Mexico City Benito Juarez

Wed 16/9

15:10-19:55

Nonstop5h 45m

£604

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Wed 12/8

09:30-16:10

Nonstop5h 40m

Mexico City Benito Juarez

Mon 24/8

15:10-19:55

Nonstop5h 45m

£604

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Wed 2/9

09:30-16:05

Nonstop5h 35m

Mexico City Benito Juarez

Thu 10/9

15:10-19:55

Nonstop5h 45m

£612

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Fri 6/11

09:30-17:00

Nonstop5h 30m

Mexico City Benito Juarez

Sat 14/11

15:50-19:55

Nonstop6h 05m

£634

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Sun 9/8

09:30-16:10

Nonstop5h 40m

Mexico City Benito Juarez

Sun 16/8

15:10-19:55

Nonstop5h 45m

£634

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Fri 11/9

09:30-16:05

Nonstop5h 35m

Mexico City Benito Juarez

Sun 20/9

15:10-19:55

Nonstop5h 45m

£642

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Tue 1/12

09:30-17:00

Nonstop5h 30m

Mexico City Benito Juarez

Mon 7/12

15:50-19:55

Nonstop6h 05m

£679

Flights are sorted by cheapest return flights first.

Deals found on 12/6

Showing 1-10 of 19 resultsSorted by cheapest first
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Best time to book a flight from Seattle to Mexico City

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

Cheapflights Insights

Everything you need to know about your flight from Seattle to Mexico City

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

The best time to book flights from Seattle to Mexico City is 54 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 Mexico City?

Currently, September is the cheapest month in which you can book a flight from Seattle to Mexico City (average of £373). Flying from Seattle to Mexico City in December is currently the most expensive (average of £649). 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 MEX?

Find hourly flight availability from Seattle to Mexico City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 June 2026.

When flying from Seattle to Mexico City, 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 for a return flight from Seattle to Mexico City?

Related info for your journey

Find useful and relevant information for your journey from Seattle to Mexico City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Mexico City?

    There are many flights that can get you from Seattle to Mexico City in 5h 30m. Fly via Delta to get the fastest option. There are 2333 mi between Seattle and Mexico City. Generally, flights for this route are direct.

  • What are the most reliable airlines from Seattle to Mexico City?

    Before booking your flight to Mexico City from Seattle, check out the most reliable airlines to get you to your destination on time: Delta (89%), Aeromexico (89%), Scandinavian Airlines( 80%).

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

    Yes. In addition to deals on Seattle to Mexico City flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Mexico City?

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

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

    Yes. Cheapflights offers flight deals from Seattle to Mexico City 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 Mexico City?

    Currently, September is the cheapest month in which you can book a flight from Seattle to Mexico City (average of £373). Flying from Seattle to Mexico City in December is currently the most expensive (average of £649). 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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When you search for this flight from Seattle to Mexico City, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Mexico City?

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Mexico City 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 Mexico City with no change fees?

Certainly. Search results for flights to Mexico City from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes! Start tracking prices for Seattle to Mexico City flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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