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Cheap flights from Seattle to Mexico City from £171

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 25/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MEX
12 Oct — 19 Oct1
1 adult
1 adult, Economy

Cheap 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 September 2025.

Round-trip from

£374

One-way from

£171

Popular in

December

Cheapest in

June

Average price

£508
WestJet
  • WestJet
  • 16/10-22/10
  • 2 total stops
  • 22h 12m total
  • Seattle to Mexico City
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WestJet
  • WestJet
  • 25/9
  • 1 total stop
  • 15h 18m total
  • Seattle to Mexico City
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£52 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Find flight deals from Seattle to Mexico City

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 September 2025.

Thu 16/1013:50SEA - MEX
1 stop10h 08mWestJet
Wed 22/1001:55MEX - SEA
1 stop12h 04mWestJet
Deal found 9/9£374
Sun 16/1111:55SEA - MEX
2 stops35h 05mWestJet
Fri 12/1201:55MEX - SEA
2 stops34h 28mWestJet
Deal found 9/9£429
Tue 11/1109:30SEA - MEX
Nonstop5h 30mDelta
Thu 20/1115:45MEX - SEA
Nonstop6h 15mDelta
Deal found 12/9£508
Mon 3/1115:45SEA - MEX
1 stop17h 20mDelta
Tue 11/1115:45MEX - SEA
Nonstop6h 15mDelta
Deal found 11/9£511
Mon 24/1109:30SEA - MEX
Nonstop5h 30mDelta
Mon 1/1207:35MEX - SEA
1 stop11h 25mDelta
Deal found 10/9£515
Wed 10/1205:25SEA - MEX
2 stops14h 00mDelta
Mon 22/1208:00MEX - SEA
2 stops12h 16mDelta
Deal found 10/9£522
Mon 15/1223:59SEA - MEX
1 stop8h 06mUnited Airlines
Fri 26/1215:20MEX - SEA
1 stop11h 14mUnited Airlines
Deal found 10/9£533
Wed 10/1205:25SEA - MEX
2 stops14h 00mDelta
Sat 20/1207:30MEX - SEA
2 stops16h 22mDelta
Deal found 10/9£537
Fri 14/1109:30SEA - MEX
Nonstop5h 30mDelta
Sat 22/1115:45MEX - SEA
Nonstop6h 15mDelta
Deal found 11/9£537
Mon 24/1111:55SEA - MEX
2 stops11h 05mWestJet
Mon 1/1201:55MEX - SEA
1 stop14h 25mWestJet
Deal found 10/9£559
Wed 5/1109:30SEA - MEX
Nonstop5h 30mDelta
Wed 19/1115:45MEX - SEA
Nonstop6h 15mDelta
Deal found 11/9£560
Sat 27/1213:40SEA - MEX
1 stop18h 10mDelta
Mon 12/108:55MEX - SEA
1 stop12h 05mDelta
Deal found 11/9£567

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 September 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

Thu 26/2

09:30-17:00

Nonstop5h 30m

Mexico City Benito Juarez

Sat 7/3

15:50-20:00

Nonstop6h 10m

£523

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Fri 20/2

09:30-17:00

Nonstop5h 30m

Mexico City Benito Juarez

Fri 6/3

15:50-20:00

Nonstop6h 10m

£537

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Fri 13/2

09:30-17:00

Nonstop5h 30m

Mexico City Benito Juarez

Fri 20/2

15:50-20:00

Nonstop6h 10m

£537

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Sat 17/1

11:55-01:00

2 stops35h 05m

Mexico City Benito Juarez

Tue 20/1

17:30-14:20

2 stops46h 50m

£546

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Wed 5/11

09:30-17:00

Nonstop5h 30m

Mexico City Benito Juarez

Wed 19/11

15:45-20:00

Nonstop6h 15m

£560

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Thu 19/2

09:30-17:00

Nonstop5h 30m

Mexico City Benito Juarez

Mon 23/2

15:50-20:00

Nonstop6h 10m

£582

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Sun 14/12

17:05-10:05

2 stops15h 00m

Mexico City Benito Juarez

Mon 29/12

12:25-00:34

1 stop14h 09m

£588

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Fri 16/1

09:30-17:00

Nonstop5h 30m

Mexico City Benito Juarez

Mon 19/1

15:50-20:00

Nonstop6h 10m

£597

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Sat 17/1

09:30-17:00

Nonstop5h 30m

Mexico City Benito Juarez

Tue 20/1

15:50-20:00

Nonstop6h 10m

£597

SeattleMexico City

SEA - MEX

SEAMEX

Seattle/Tacoma Intl

Fri 6/2

09:30-17:00

Nonstop5h 30m

Mexico City Benito Juarez

Mon 9/2

15:50-20:00

Nonstop6h 10m

£597

Flights are sorted by cheapest return flights first.

Deals found on 11/9

Showing 1-10 of 22 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 29 August 2025.

The best time to book flights from Seattle to Mexico City is 44 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, April is the cheapest month in which you can book a flight from Seattle to Mexico City (average of £791). Flying from Seattle to Mexico City in July is currently the most expensive (average of £1,261). 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 September 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 Delta or WestJet to get the fastest option. There are 2333 mi between Seattle and Mexico City. Both multi-stop and direct flights can be found to your destination and back.

  • 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: Virgin Atlantic (90%), Delta (89%), Aeromexico( 89%).

  • 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, April is the cheapest month in which you can book a flight from Seattle to Mexico City (average of £791). Flying from Seattle to Mexico City in July is currently the most expensive (average of £1,261). 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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