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Cheap flights from Seattle to Mexico City from £339

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 27/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MEX
5 Mar — 12 Mar1
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 3 February 2026.

Thu 23/409:30
SEA
-
MEX
Nonstop5h 35m
Delta
Tue 22/915:00
MEX
-
SEA
Nonstop6h 00m
Delta
Deal found 2/2£526
Tue 7/407:15
SEA
-
MEX
1 stop11h 15m
Delta
Tue 14/414:50
MEX
-
SEA
Nonstop6h 10m
Delta
Deal found 31/1£529
Tue 8/912:00
SEA
-
MEX
1 stop10h 20m
Delta
Wed 30/915:00
MEX
-
SEA
Nonstop6h 00m
Delta
Deal found 2/2£529
Thu 9/405:30
SEA
-
MEX
2 stops10h 25m
Delta
Tue 21/407:05
MEX
-
SEA
1 stop17h 48m
Delta
Deal found 3/2£537
Mon 7/909:30
SEA
-
MEX
Nonstop5h 35m
Delta
Fri 18/915:00
MEX
-
SEA
Nonstop6h 00m
Delta
Deal found 1/2£540
Thu 26/305:30
SEA
-
MEX
2 stops10h 05m
Delta
Wed 8/409:05
MEX
-
SEA
2 stops15h 18m
Delta
Deal found 2/2£540
Sat 12/909:30
SEA
-
MEX
Nonstop5h 35m
Delta
Wed 23/915:00
MEX
-
SEA
Nonstop6h 00m
Delta
Deal found 2/2£541
Fri 3/409:40
SEA
-
MEX
1 stop12h 30m
Delta
Tue 14/414:50
MEX
-
SEA
Nonstop6h 10m
Delta
Deal found 1/2£543
Wed 24/621:25
SEA
-
MEX
1 stop15h 30m
Delta
Sun 5/706:50
MEX
-
SEA
2 stops16h 27m
Delta
Deal found 1/2£551
Sat 11/709:30
SEA
-
MEX
Nonstop5h 35m
Delta
Sat 18/715:00
MEX
-
SEA
Nonstop6h 00m
Delta
Deal found 1/2£554
Sat 25/409:30
SEA
-
MEX
Nonstop5h 35m
Delta
Sat 2/514:50
MEX
-
SEA
Nonstop6h 10m
Delta
Deal found 2/2£556

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 3 February 2026.

Round-trip from

£526

One-way from

£339

Popular in

December

Cheapest in

September

Average price

£444
Delta
  • Delta
  • 28/4-6/5
  • Nonstop
  • 11h 45m total
  • Seattle to Mexico City
Search Deals
Delta
  • Delta
  • 27/7
  • Nonstop
  • 5h 35m total
  • Seattle to Mexico City
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£33 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 3 February 2026.
Use the filters below to find and compare flights from Seattle to Mexico City that are best for you.

Fly from

Seattle

Fly to

Mexico City

Route

Depart

Return

Price

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Wed 15/7

09:30-16:05

Nonstop5h 35m

Mexico City Benito Juarez

Wed 22/7

15:00-20:00

Nonstop6h 00m

£526

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Wed 15/4

09:30-16:05

Nonstop5h 35m

Mexico City Benito Juarez

Wed 22/4

14:50-20:00

Nonstop6h 10m

£526

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Thu 23/4

09:30-16:05

Nonstop5h 35m

Mexico City Benito Juarez

Thu 30/4

14:50-20:00

Nonstop6h 10m

£526

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Fri 10/7

09:30-16:05

Nonstop5h 35m

Mexico City Benito Juarez

Sat 18/7

15:00-20:00

Nonstop6h 00m

£556

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Thu 9/4

07:15-19:30

1 stop11h 15m

Mexico City Benito Juarez

Thu 23/4

14:50-20:00

Nonstop6h 10m

£566

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Fri 10/4

19:35-18:05

2 stops21h 30m

Mexico City Benito Juarez

Fri 17/4

07:50-23:59

2 stops17h 09m

£566

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Thu 9/7

08:40-21:14

1 stop11h 34m

Mexico City Benito Juarez

Sun 19/7

15:00-20:00

Nonstop6h 00m

£581

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Wed 8/7

08:25-20:30

1 stop11h 05m

Mexico City Benito Juarez

Sun 19/7

15:00-20:00

Nonstop6h 00m

£581

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Wed 6/5

09:30-16:05

Nonstop5h 35m

Mexico City Benito Juarez

Mon 11/5

14:50-20:00

Nonstop6h 10m

£598

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Thu 16/4

09:30-16:05

Nonstop5h 35m

Mexico City Benito Juarez

Mon 20/4

14:50-20:00

Nonstop6h 10m

£598

Flights are sorted by cheapest return flights first.

Deals found on 1/2

Showing 1-10 of 23 results
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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?

Use this chart to determine the optimal time to book a return flight from Seattle to Mexico City. Price data was last updated on 30 January 2026.

The best time to book flights from Seattle to Mexico City is 74 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, August is the cheapest month in which you can book a flight from Seattle to Mexico City (average of £131). Flying from Seattle to Mexico City in December is currently the most expensive (average of £400). 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 3 February 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.

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 popular is this Seattle to Mexico City flight route?

    The Seattle/Tacoma Intl to Mexico City Benito Juarez flight path was viewed by 2 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 Mexico City?

    There are many flights that can get you from Seattle to Mexico City in 5h 35m. Fly via Delta to get the fastest option. There are 2333 mi between Seattle and Mexico City. Generally, flights for this route are direct.

  • 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, August is the cheapest month in which you can book a flight from Seattle to Mexico City (average of £131). Flying from Seattle to Mexico City in December is currently the most expensive (average of £400). 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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How does Cheapflights help users find flights from Seattle to Mexico City?

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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