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Hermosillo

$331+ 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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HMO
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
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 November 20, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$331
(CheapOair)

Popular in

December

Cheapest in

February

Average price

$782
Provider with most accurate pricing for Seattle/Tacoma Intl-Hermosillo Gen Pesqueira Garcia flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Hermosillo Gen Pesqueira Garcia flights.
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From Seattle/Tacoma Intl to Hermosillo Gen Pesqueira Garcia
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Highest demand for flights based on searches. 11% potential increase in price ($92 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 20, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/20. 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 12/2310:00 amSEA - HMO
1 stop27h 40mMultiple Airlines
Sun 1/118:25 pmHMO - SEA
2 stops24h 22mMultiple Airlines
Deal found 11/20$783
This CheapOair deal was found by Cheapflights users on 11/19. 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.
Sat 12/2010:00 pmSEA - HMO
1 stop8h 45mVolaris
Sun 12/288:26 amHMO - SEA
1 stop12h 22mVolaris
Deal found 11/19$982
This American Airlines deal was found by Cheapflights users on 11/20. 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 12/206:31 amSEA - HMO
1 stop4h 51mAmerican Airlines
Sun 12/281:16 pmHMO - SEA
1 stop21h 11mAmerican Airlines
Deal found 11/20$1,116
This Kiwi.com deal was found by Cheapflights users on 11/19. 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 12/207:28 pmSEA - HMO
2 stops35h 17mMultiple Airlines
Sun 12/288:26 amHMO - SEA
1 stop12h 22mMultiple Airlines
Deal found 11/19$1,230
This Mytrip deal was found by Cheapflights users on 11/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2311:25 amSEA - HMO
2 stops22h 35mVolaris
Sun 1/1111:15 pmHMO - SEA
2 stops21h 33mVolaris
Deal found 11/20$1,262
This Aeromexico deal was found by Cheapflights users on 11/19. 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 stops28h 45mAeromexico
Sun 12/283:56 pmHMO - SEA
2 stops32h 04mAeromexico
Deal found 11/19$1,671

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 November 20, 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

Thu 2/5

10:00 pm-7:45 am

1 stop8h 45m

Hermosillo Gen Pesqueira Garcia

Wed 2/11

8:26 am-8:00 pm

1 stop12h 34m

$331

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Fri 1/30

10:00 pm-7:45 am

1 stop8h 45m

Hermosillo Gen Pesqueira Garcia

Fri 2/6

8:26 am-8:00 pm

1 stop12h 34m

$367

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Fri 2/13

10:00 pm-7:45 am

1 stop8h 45m

Hermosillo Gen Pesqueira Garcia

Fri 2/20

8:26 am-8:00 pm

1 stop12h 34m

$447

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Mon 3/9

10:00 pm-7:45 am

1 stop9h 45m

Hermosillo Gen Pesqueira Garcia

Thu 3/19

8:26 am-8:05 pm

1 stop11h 39m

$505

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Fri 2/13

10:00 pm-7:45 am

1 stop8h 45m

Hermosillo Gen Pesqueira Garcia

Fri 2/20

8:26 am-9:31 am

3 stops26h 05m

$527

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Fri 1/30

10:00 pm-7:33 pm

2 stops20h 33m

Hermosillo Gen Pesqueira Garcia

Sat 2/7

8:26 am-8:00 pm

1 stop12h 34m

$551

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Fri 1/30

10:00 pm-9:00 am

1 stop10h 00m

Hermosillo Gen Pesqueira Garcia

Sat 2/7

9:45 am-8:00 pm

1 stop11h 15m

$552

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Fri 12/5

10:00 pm-7:45 am

1 stop8h 45m

$358

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Fri 12/5

2:55 pm-12:26 pm

1 stop20h 31m

$406

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

Fri 12/5

5:25 am-11:25 pm

2 stops17h 00m

$663

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

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 November.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
MytripPrice Accuracy3 starsTrust Score*3 stars

*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 November 20, 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 November 20, 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
11,047 reviews

Crew

8.0

Comfort

7.2

Entertainment

6.9

Boarding

7.5

Overall

7.2

Food

6.4

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.
American Airlines
7.2
Good
11,047 reviews
American Airlines
7.2
Good
11,047 reviews

Crew

8.0

Comfort

7.2

Entertainment

6.9

Boarding

7.5

Overall

7.2

Food

6.4

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.
Volaris
6.7
Okay
1,150 reviews
American Airlines
7.2
Good
11,047 reviews

Crew

8.0

Comfort

7.2

Entertainment

6.9

Boarding

7.5

Overall

7.2

Food

6.4

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.

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 45m. 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 28% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Seattle to Hermosillo one-way?

    One-way options have recently been found by users for as low as $358 on Volaris. Other airlines that offer cheap prices include American Airlines from $406 and Delta from $663 one-way.

  • 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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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 November 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
VolarisCheapest$496Average$782FlexibilityNo cancel feeOn-time79%
American AirlinesCheapest$525Average$576FlexibilityNo cancel feeOn-time71%

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