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Hermosillo

$350+ Cheap flights from Seattle (SEA) to Hermosillo (HMO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HMO
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap 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 December 15, 2025.

This American Airlines deal was found by Cheapflights users on 12/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:31 amSEA - HMO
1 stop4h 51mAmerican Airlines
Mon 1/121:13 pmHMO - SEA
1 stop21h 17mAmerican Airlines
Deal found 12/14$826
This American Airlines deal was found by Cheapflights users on 12/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/203:00 pmSEA - HMO
1 stop20h 22mAmerican Airlines
Mon 1/121:13 pmHMO - SEA
1 stop25h 49mAmerican Airlines
Deal found 12/14$936
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Fri 12/1910:00 amSEA - HMO
1 stop27h 40mMultiple Airlines
Mon 1/128:50 pmHMO - SEA
2 stops23h 00mMultiple Airlines
Deal found 12/14$952
This American Airlines deal was found by Cheapflights users on 12/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/203:00 pmSEA - HMO
1 stop20h 22mAmerican Airlines
Sun 12/281:16 pmHMO - SEA
1 stop21h 11mAmerican Airlines
Deal found 12/15$1,045
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Sat 12/2010:00 pmSEA - HMO
1 stop10h 00mMultiple Airlines
Mon 1/128:50 pmHMO - SEA
2 stops23h 00mMultiple Airlines
Deal found 12/14$1,067
This Aeromexico deal was found by Cheapflights users on 12/14. 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.
Sat 12/201:40 pmSEA - HMO
2 stops19h 55mAeromexico
Sun 12/288:07 amHMO - SEA
2 stops29h 03mAeromexico
Deal found 12/14$1,698
This Aeromexico deal was found by Cheapflights users on 12/14. 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.
Sat 12/201:40 pmSEA - HMO
2 stops24h 23mAeromexico
Mon 1/126:05 amHMO - SEA
2 stops18h 17mAeromexico
Deal found 12/14$1,730

Find 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 December 15, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$350
(Mytrip)

Popular in

December

Cheapest in

February

Average price

$874
Provider with most accurate pricing for Seattle/Tacoma Intl-Hermosillo Gen Pesqueira Garcia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Hermosillo Gen Pesqueira Garcia flights.
Search Deals
From Seattle/Tacoma Intl to Hermosillo Gen Pesqueira Garcia
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($125 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 15, 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 1/27

10:00 pm-7:45 am

1 stop8h 45m

Hermosillo Gen Pesqueira Garcia

Tue 2/3

8:26 am-7:48 pm

1 stop12h 22m

$350

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Thu 4/30

6:18 pm-11:29 am

1 stop17h 11m

Hermosillo Gen Pesqueira Garcia

Sun 5/3

12:55 pm-10:34 am

1 stop21h 39m

$657

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Tue 2/3

9:30 am-10:59 pm

1 stop12h 29m

Hermosillo Gen Pesqueira Garcia

Thu 2/26

6:05 am-7:56 pm

1 stop14h 51m

$791

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Wed 2/4

5:30 am-10:59 pm

2 stops16h 29m

Hermosillo Gen Pesqueira Garcia

Thu 2/26

9:14 am-7:56 pm

1 stop11h 42m

$801

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Fri 1/30

9:30 am-10:59 pm

1 stop12h 29m

Hermosillo Gen Pesqueira Garcia

Wed 2/25

9:09 am-7:56 pm

1 stop11h 47m

$803

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Fri 1/30

9:30 am-10:59 pm

1 stop12h 29m

Hermosillo Gen Pesqueira Garcia

Tue 2/24

6:05 am-7:56 pm

1 stop14h 51m

$803

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Thu 1/29

9:30 am-10:59 pm

1 stop12h 29m

Hermosillo Gen Pesqueira Garcia

Mon 2/23

6:05 am-7:56 pm

1 stop14h 51m

$803

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Compare providers for flights from Seattle to Hermosillo

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Hermosillo in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Hermosillo flights, users find the pricing of Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on Seattle-Hermosillo flight deals on Cheapflights vs. Mytrip >95% of the time. Price accuracy is based on data collected from Seattle-Hermosillo flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Hermosillo flights, Cheapflights users trust Mytrip the most. Mytrip has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Hermosillo flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 December 15, 2025.

It’s optimal to fly from Seattle to Hermosillo in the evening. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight at noon.

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 December 15, 2025.
Peruse reviews from past customers who have flown with American Airlines 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
11,052 reviews

Entertainment

6.9

Food

6.5

Crew

8.0

Overall

7.2

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit
American Airlines
7.2
Good
11,052 reviews
American Airlines
7.2
Good
11,052 reviews

Entertainment

6.9

Food

6.5

Crew

8.0

Overall

7.2

Boarding

7.5

Comfort

7.2

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit

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 and American Airlines can get you from Seattle to Hermosillo in just under 8h 45m. Your travel time can differ by up to 8h 26m. The distance from Seattle to Hermosillo is about 1403 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Seattle to Hermosillo round-trip?

    Cheapflights users have booked flights from Seattle to Hermosillo round-trip from $525. American Airlines is priced at 23% 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.

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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Top airline flying from Seattle to Hermosillo

Discover the top airline 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$525Average$576FlexibilityNo cancel feeOn-time71%

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