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Cheap flights from Seattle to Mexico City from £211

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 29/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MEX
11 Jan — 18 Jan1
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 12 December 2025.

Tue 16/1209:30SEA - MEX
1 stop26h 45mDelta
Sat 20/1220:00MEX - SEA
1 stop16h 45mDelta
Deal found 10/12£557
Sat 27/1209:30SEA - MEX
Nonstop5h 30mDelta
Tue 6/113:00MEX - SEA
1 stop9h 10mDelta
Deal found 11/12£612
Wed 31/1209:30SEA - MEX
Nonstop5h 30mDelta
Thu 8/112:05MEX - SEA
1 stop10h 55mDelta
Deal found 9/12£615
Tue 30/1219:12SEA - MEX
1 stop7h 53mUnited Airlines
Sun 4/106:10MEX - SEA
1 stop12h 43mUnited Airlines
Deal found 9/12£615
Sat 27/1209:30SEA - MEX
Nonstop5h 30mDelta
Mon 5/120:15MEX - SEA
1 stop26h 45mDelta
Deal found 11/12£621
Wed 17/1223:55SEA - MEX
1 stop11h 50mDelta
Sun 21/1207:25MEX - SEA
2 stops17h 35mDelta
Deal found 11/12£622
Fri 26/1205:25SEA - MEX
1 stop7h 30mDelta
Mon 5/120:15MEX - SEA
1 stop26h 45mDelta
Deal found 11/12£624
Mon 29/1219:12SEA - MEX
1 stop7h 53mUnited Airlines
Tue 6/106:10MEX - SEA
1 stop11h 34mUnited Airlines
Deal found 9/12£630
Thu 25/1219:30SEA - MEX
1 stop17h 25mDelta
Tue 30/1209:20MEX - SEA
1 stop13h 07mDelta
Deal found 10/12£632
Mon 29/1207:05SEA - MEX
1 stop10h 30mUnited Airlines
Fri 9/105:45MEX - SEA
2 stops14h 41mUnited Airlines
Deal found 11/12£634
Sun 28/1205:02SEA - MEX
1 stop15h 28mUnited Airlines
Mon 5/109:05MEX - SEA
1 stop11h 01mUnited Airlines
Deal found 9/12£645
Mon 29/1209:30SEA - MEX
Nonstop5h 30mDelta
Tue 6/113:00MEX - SEA
1 stop9h 10mDelta
Deal found 11/12£647

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 12 December 2025.

Round-trip from

£406

One-way from

£211

Popular in

December

Cheapest in

September

Average price

£648
Aeromexico
  • Aeromexico
  • 19/1-27/1
  • 1 total stop
  • 25h 58m total
  • Seattle to Mexico City
Search Deals
Delta
  • Delta
  • 29/1
  • Nonstop
  • 5h 30m total
  • Seattle to Mexico City
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£41 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 December 2025
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 12 December 2025.
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

Mon 19/1

09:30-17:00

Nonstop5h 30m

Mexico City Benito Juarez

Tue 27/1

20:20-21:00

1 stop26h 40m

£409

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Mon 19/1

09:30-17:00

Nonstop5h 30m

Mexico City Benito Juarez

Sat 31/1

15:50-19:55

Nonstop6h 05m

£446

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Thu 22/1

09:30-17:00

Nonstop5h 30m

Mexico City Benito Juarez

Wed 28/1

15:50-19:55

Nonstop6h 05m

£446

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Fri 23/1

09:30-17:00

Nonstop5h 30m

Mexico City Benito Juarez

Thu 29/1

15:50-19:55

Nonstop6h 05m

£446

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Mon 19/1

09:30-17:00

Nonstop5h 30m

Mexico City Benito Juarez

Tue 27/1

15:50-19:55

Nonstop6h 05m

£446

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Mon 26/1

09:30-17:00

Nonstop5h 30m

Mexico City Benito Juarez

Thu 29/1

15:50-19:55

Nonstop6h 05m

£446

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Sun 25/1

14:02-23:55

1 stop7h 53m

Mexico City Benito Juarez

Thu 29/1

15:50-19:55

Nonstop6h 05m

£450

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Wed 11/3

09:25-11:35

1 stop25h 10m

Mexico City Benito Juarez

Sat 14/3

14:50-19:55

Nonstop6h 05m

£458

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Wed 4/2

09:25-22:35

2 stops11h 10m

Mexico City Benito Juarez

Tue 10/2

10:30-21:00

1 stop12h 30m

£465

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Wed 14/1

09:47-11:30

1 stop23h 43m

Mexico City Benito Juarez

Mon 19/1

07:15-00:09

2 stops18h 54m

£469

Flights are sorted by cheapest return flights first.

Deals found on 11/12

Showing 1-10 of 20 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 5 December 2025.

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 £423). 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 12 December 2025.

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 30m. Fly via Aeromexico or 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 £423). 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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