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Hermosillo

$314+ Cheap flights from Seattle (SEA) to Hermosillo (HMO)

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HMO
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Seattle to Hermosillo

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Hermosillo (HMO). 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 September 17, 2025.

Round-trip from

$449
(CheapOair)

One-way from

$314
(American Airlines)

Popular in

December

Cheapest in

February

Average price

$576
From Seattle/Tacoma Intl to Hermosillo Gen Pesqueira Garcia
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One-way flight from Seattle/Tacoma Intl to Hermosillo Gen Pesqueira Garcia
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Highest demand for flights based on searches. 21% potential increase in price ($199 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($54 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Seattle to Hermosillo

Cheapest flights from Seattle to Hermosillo
Explore the most affordable flight options available from Seattle to Hermosillo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This CheapOair deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2810:15 pmSEA - HMO
1 stop8h 56mVolaris
Tue 11/48:26 amHMO - SEA
1 stop12h 39mVolaris
Deal found 9/16$449
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2810:43 amSEA - HMO
1 stop26h 57mMultiple Airlines
Tue 11/48:20 amHMO - SEA
2 stops38h 09mMultiple Airlines
Deal found 9/16$460
This CheapOair deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/510:15 pmSEA - HMO
1 stop8h 56mVolaris
Thu 10/97:57 amHMO - SEA
1 stop12h 18mVolaris
Deal found 9/16$496
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/56:12 amSEA - HMO
2 stops25h 38mMultiple Airlines
Thu 10/99:10 pmHMO - SEA
1 stop23h 05mMultiple Airlines
Deal found 9/16$554
This Aeromexico deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:10 amSEA - HMO
2 stops28h 50mAeromexico
Tue 11/47:12 pmHMO - SEA
2 stops22h 38mAeromexico
Deal found 9/16$937

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Hermosillo 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 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Seattle to Hermosillo that are best for you.

Fly from

Seattle

Fly to

Hermosillo

Route

Depart

Return

Price

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Tue 10/28

10:15 pm-7:11 am

1 stop8h 56m

Hermosillo Gen Pesqueira Garcia

Tue 11/4

8:26 am-8:05 pm

1 stop12h 39m

$449

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Tue 10/28

10:43 am-1:40 pm

1 stop26h 57m

Hermosillo Gen Pesqueira Garcia

Tue 11/4

8:20 am-9:29 pm

2 stops38h 09m

$460

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Sun 10/5

10:15 pm-7:11 am

1 stop8h 56m

Hermosillo Gen Pesqueira Garcia

Thu 10/9

7:57 am-8:15 pm

1 stop12h 18m

$496

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Sun 10/5

6:12 am-7:50 am

2 stops25h 38m

Hermosillo Gen Pesqueira Garcia

Thu 10/9

9:10 pm-8:15 pm

1 stop23h 05m

$554

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Tue 3/3

6:15 am-12:34 pm

1 stop5h 19m

Hermosillo Gen Pesqueira Garcia

Wed 3/4

2:00 pm-4:48 pm

1 stop27h 48m

$699

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Tue 3/3

9:30 am-11:22 pm

2 stops12h 52m

Hermosillo Gen Pesqueira Garcia

Wed 3/4

10:28 am-8:00 pm

1 stop10h 32m

$1,052

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Fri 12/5

5:54 pm-12:55 pm

1 stop18h 01m

$314

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Sat 12/20

11:03 pm-10:00 pm

2 stops21h 57m

$469

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Sat 12/20

10:00 pm-7:45 am

1 stop8h 45m

$503

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Fri 12/19

11:03 pm-7:45 am

2 stops31h 42m

$517

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 11 results
1
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Best time to book a flight from Seattle to Hermosillo

Have a flexible travel schedule? Discover the best time to fly to Hermosillo from Seattle with our price prediction graph.
Estimated round-trip 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 Hermosillo

What is the cheapest time of day to fly from SEA to HMO?

Find hourly flight availability from Seattle to Hermosillo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

It’s optimal to fly from Seattle to Hermosillo at noon. By choosing this option you can save up to 14% on the cost of your flight, compared to a flight in the morning.

Reviews of airlines servicing Hermosillo

Get insights into the airlines that provide service to Hermosillo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Hermosillo. Reviews last updated September 17, 2025.
Peruse reviews from past customers who have flown with American Airlines and Volaris from Seattle to Hermosillo to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Boarding

7.5

Overall

7.2

Comfort

7.2

Crew

8.0

Entertainment

6.9

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Boarding

7.5

Overall

7.2

Comfort

7.2

Crew

8.0

Entertainment

6.9

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
Volaris
6.6
Okay
1,154 reviews
American Airlines
7.2
Good
10,000 reviews

Boarding

7.5

Overall

7.2

Comfort

7.2

Crew

8.0

Entertainment

6.9

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

Related info for your journey

Find useful and relevant information for your journey from Seattle to Hermosillo. 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 Hermosillo?

    Volaris can get you from Seattle to Hermosillo in just under 8h 56m. Your travel time can differ by up to . The distance from Seattle to Hermosillo is about 1403 mi.

  • What are the cheapest airlines flying from Seattle to Hermosillo round-trip?

    Cheapflights users have booked flights from Seattle to Hermosillo round-trip from $496. Another airline that can offer you cheap pricing is American Airlines. Volaris is priced at 32% lower than the current average price of a flight leaving 3 months from now.

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

    Yes. In addition to deals on Seattle to Hermosillo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Hermosillo?

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

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

    Yes. Cheapflights offers flight deals from Seattle to Hermosillo 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 Hermosillo?

    Currently, October is the cheapest month in which you can book a flight from Seattle to Hermosillo (average of $414). Flying from Seattle to Hermosillo in December is currently the most expensive (average of $836). 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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Alternative routes for Seattle to Hermosillo

See prices for flight routes from nearby airports that may be better suited for you.
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Spokane to Hermosillo flights

Top 2 airlines flying from Seattle to Hermosillo

Discover the top 2 airlines that operate flights from Seattle to Hermosillo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
VolarisCheapest$496Average$782FlexibilityNo cancel feeOn-time79%
American AirlinesCheapest$525Average$576FlexibilityNo cancel feeOn-time71%

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