$363 Cheap Flights from Seattle (SEA) to Los Mochis (LMM)

View $363 flight on Fri, Oct 24, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Los Mochis, Sinaloa (LMM-Federal del Valle del Fuerte Intl.)

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Cheap Flights from Seattle to Los Mochis (SEA-LMM)

Prices were available within the past 7 days and start at $363 for one-way flights and $674 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sun, Nov 23 - Wed, Dec 10
SEA
Seattle
LMM
Los Mochis
$674 Roundtrip, found 5 days ago
$674
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Nov 23 from Seattle to Los Mochis, returning Wed, Dec 10, priced at $674 found 5 days ago
Aeromexico
Fri, Nov 21 - Mon, Dec 8
SEA
Seattle
LMM
Los Mochis
$694 Roundtrip, found 5 days ago
$694
Roundtrip
found 5 days ago
Select Aeromexico flight, departing Fri, Nov 21 from Seattle to Los Mochis, returning Mon, Dec 8, priced at $694 found 5 days ago
Delta
Sun, Nov 23 - Wed, Dec 10
SEA
Seattle
LMM
Los Mochis
$700 Roundtrip, found 5 days ago
$700
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Nov 23 from Seattle to Los Mochis, returning Wed, Dec 10, priced at $700 found 5 days ago
Delta
Sun, Nov 23 - Wed, Dec 10
SEA
Seattle
LMM
Los Mochis
$709 Roundtrip, found 5 days ago
$709
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Nov 23 from Seattle to Los Mochis, returning Wed, Dec 10, priced at $709 found 5 days ago
Aeromexico
Fri, Nov 21 - Mon, Dec 8
SEA
Seattle
LMM
Los Mochis
$729 Roundtrip, found 5 days ago
$729
Roundtrip
found 5 days ago
Select Aeromexico flight, departing Fri, Nov 21 from Seattle to Los Mochis, returning Mon, Dec 8, priced at $729 found 5 days ago
Aeromexico
Mon, Nov 10 - Mon, Nov 17
SEA
Seattle
LMM
Los Mochis
$754 Roundtrip, found 1 day ago
$754
Roundtrip
found 1 day ago
Select Aeromexico flight, departing Mon, Nov 10 from Seattle to Los Mochis, returning Mon, Nov 17, priced at $754 found 1 day ago
Delta
Mon, Nov 24 - Mon, Dec 8
SEA
Seattle
LMM
Los Mochis
$754 Roundtrip, found 3 days ago
$754
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Nov 24 from Seattle to Los Mochis, returning Mon, Dec 8, priced at $754 found 3 days ago
Aeromexico
Wed, Dec 10 - Tue, Jan 27
SEA
Seattle
LMM
Los Mochis
$756 Roundtrip, found 5 hours ago
$756
Roundtrip
found 5 hours ago
Select Aeromexico flight, departing Wed, Dec 10 from Seattle to Los Mochis, returning Tue, Jan 27, priced at $756 found 5 hours ago
Aeromexico
Mon, Nov 10 - Mon, Nov 17
SEA
Seattle
LMM
Los Mochis
$764 Roundtrip, found 1 day ago
$764
Roundtrip
found 1 day ago
Select Aeromexico flight, departing Mon, Nov 10 from Seattle to Los Mochis, returning Mon, Nov 17, priced at $764 found 1 day ago
Aeromexico
Tue, Jan 6 - Tue, Jan 20
SEA
Seattle
LMM
Los Mochis
$766 Roundtrip, found 3 days ago
$766
Roundtrip
found 3 days ago
Select Aeromexico flight, departing Tue, Jan 6 from Seattle to Los Mochis, returning Tue, Jan 20, priced at $766 found 3 days ago

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Federal del Valle del Fuerte Intl. Airport (LMM) cost?
Snag a cheap one-way flight from $363 or cheap return flight from $674 from Seattle - Tacoma Intl. Airport (SEA) to Federal del Valle del Fuerte Intl. Airport (LMM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Federal del Valle del Fuerte Intl. Airport (LMM)?
Planning your getaway for November can help you save, as it's the cheapest month for flights between SEA and LMM. You'll usually find the lowest prices during off-peak months.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Federal del Valle del Fuerte Intl. Airport (LMM)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll take you from SEA to LMM. Then, sort your results by "Price (lowest to highest)" to score the best deal available.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Federal del Valle del Fuerte Intl. Airport (LMM)?
You'll need to book a flight with a layover when traveling from Seattle - Tacoma Intl. Airport (SEA) to Federal del Valle del Fuerte Intl. Airport (LMM). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from SEA to LMM?
Generally you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can change based on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Federal del Valle del Fuerte Intl. Airport (LMM)?
To reach Federal del Valle del Fuerte Intl. Airport (LMM) on time, select a flight that leaves from Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Federal del Valle del Fuerte Intl. Airport (LMM) last-minute?
Holding off until just before your departure to book your flight from SEA to LMM often results in higher prices. While you might find some last-minute offers, they're not always guaranteed. Be flexible with your itinerary to boost your chances of getting a bargain.
Is it cheaper to book a SEA to LMM flight and hotel package?
Securing a SEA to LMM flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Pick from our impressive range of hotels and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Federal del Valle del Fuerte Intl. Airport (LMM)?
Typically, you can cancel or reschedule your SEA to LMM flight. However, there may be additional charges, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you need further information, head to our Customer Service portal.

Travel information

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Federal del Valle del Fuerte Intl.
Airlines serving
Aeromexico, Delta
Roundtrip price
$674
Distance
1666 mi

Book with confidence

Book with confidence

Seattle to Los Mochis Flights

The cheapest times to fly from Seattle to Los Mochis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Los Mochis are during the month of November. You can find some of the cheapest flights from Seattle to Los Mochis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Los Mochis

Sunday is one of the best days to book for cheap flights from Seattle to Los Mochis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Los Mochis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Los Mochis in 2025. You can also book with separate airlines for your outbound and return journeys, from $363 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Los Mochis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Los Mochis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to Los Mochis Flights

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*Available to One Key members.